Xukuang mechanical hammer crusher

1. There are many kinds of equipment in mining machinery instry. Almost every kind of equipment has different models of large, medium and small. Therefore, whether it is crusher, sand making machine or vibrating screen, every kind of equipment has small crushing machinery
small crushing machines include small jaw crusher, small cone crusher, small hydraulic crusher, small sand making machine, etc. these small equipments are often used in crushing proction lines with output less than 150 tons. Specific equipment model name, each manufacturer is different, the smallest model is called sj1200 cone crusher, this is because the naming principle is different, some are named according to the working principle, some are named according to the speed
I. small crushers
1. Small spring cone crushers
from large to small are sj1650 spring cone crusher, sj1400 spring cone crusher and sj1200 spring cone crusher. Sj1200 spring cone crusher is the smallest type of equipment with the cheapest price. It can be divided into coarse crushing and fine crushing. The output range of coarse crushing equipment is 110-250 tons per hour, and that of fine crushing equipment is 80-180 tons per hour. It has a wide range of applicable materials and can be used for crushing all kinds of rocks with high cost performance
according to the operation of the small sand making machine, a minor repair or overhaul should be carried out every six months or a year. Due to the deterioration and dirtiness of the lubricating oil in daily operation, the sliding surface of the machine parts is worn, so regular inspection and maintenance is indispensable. Through regular inspection, if the wear is serious, the parts should be replaced if they exceed the scope, and they can not be used any more, otherwise they may lose a lot. Before assembly, each sliding contact surface of parts should be coated with a layer of lubricating oil, and the serrated thread should be coated with grease. In fact, the most easily worn parts of small sand machine in operation are crushing wall and mortar wall. If you don't know how to operate, you can find the after-sales service of the manufacturer to deal with it. Good small sand machine manufacturers will arrive in time to assist customers
2. Small single cylinder hydraulic cone crusher
single cylinder hydraulic cone crusher has simple structure and beautiful appearance. Models from large to small are sk1800, sk1500s and sk1100. Each specification has three cavity shapes: thick, medium and thin. The capacity of small single cylinder hydraulic cone crusher is 200 to 450 tons per hour
3. Small multi cylinder hydraulic cone crusher
the model of small multi cylinder hydraulic cone crusher is 1200, and its fine crushing capacity per hour is 80 to 180 tons per hour. This type of crusher is more economical and practical, with large processing capacity
4. Small jaw crusher
jaw crusher is the necessary equipment for head breaking in every proction line. In all the crushing machinery, jaw crusher is the most suitable for head breaking. The model of Shuangjin small jaw crusher is sj-pe500 × The processing capacity is 50-150 tons per hour. And the range of discharge adjustment is large, which is also suitable for processing all kinds of stone<

2. Small sand making machine
1. Small cone sand making machine
cone crusher is a new type of crushing machine, which uses more advanced technical principles and has been widely used in the proction line. Sj1000-zs is a small cone type sand making machine. According to the different physical properties, feeding methods, feeding particle size and composition of mine stone, the output will be different. This equipment is used in the last process of the proction line, so it is also called superfine cone sand machine or dry sand machine. The price of small sand machine is 100000-200000 lower than that of large sand machine
2. Small vertical impact crusher
the vertical impact crusher is mainly used for manual sand making. The model of small equipment is sjpl1050, the stone throughput is 70-90 tons per hour, and the sand proction is 35-45 tons per hour. According to the characteristics of materials in the actual proction line, the throughput and sand proction are different

3. Other small equipment
in a small proction line, in addition to the previous main equipment, there are feeder, conveyor belt, vibrating screen, sand washer, st removal equipment, etc. these equipment are cheap, and there will be differences between different manufacturers
whether it is a large-scale proction line or a small-scale proction line, we need to go through the scheme design when we configure the equipment, and the optimization design of the proction line scheme needs to be configured according to the actual demand, cost control and selection of equipment. It is best to consult the professional crushing machinery manufacturers.

2. The hammer crusher models of each manufacturer are different. The Hammer Crushers proced by Shanghai Dingbo heavy instry have these models. The proction capacity of pc4008-75 is 15 to 30 tons per hour, pc4012-90 is 30 to 60 tons per hour, and pc4015-132 is 60 to 100 tons per hour
Dingbo hammer crusher has the following advantages: (1) high proction capacity and high crushing ratio; ② Low power consumption and uniform proct size; ③ The mechanical structure is simple, compact and light; ④ It has the advantages of less investment cost and convenient management. It is mainly composed of casing, rotor, impact iron and grate bar. The casing is divided into upper and lower parts, which are welded by cutting steel plates, and the rest parts are connected by bolts. The casing is inlaid with high manganese steel lining plate, which is easy to replace after abrasion; The main shaft is equipped with hammers with array regular distribution, and a rotor is composed of a rotary table and a hammer piercing shaft. The main machine drives the main shaft through the motor and V-belt, so as to make the rotor rotate. The hammer head is stretched out to all sides by the centrifugal force generated by the rotation. After the large material enters the crushing cavity from the feeding port, it is broken by the high-speed hammer. The qualified materials are discharged from the castor bar with a gap at the bottom, and the unqualified materials are left in the crushing chamber and repeatedly acted by hammers and bearing iron blocks until they can be discharged. In order to avoid clogging, the moisture content of crushed materials is generally less than 20%.

3.

Hammer crusher is the use of fast rotary hammer impact crushing of materials. It has the advantages of high proctivity, large crushing ratio (10 ~ 50), simple structure, compact size, light weight, less power consumption, easy operation and maintenance, uniform proct particle size and small over crushing. It is suitable for crushing brittle, medium hard and low moisture materials. Widely used in feldspar, limestone, gypsum, chalk, kaolinite, coal and other materials in, fine crushing

The hammer crusher can be divided into single rotor (single shaft type) and double rotor (double shaft type). Single rotor can be divided into irreversible and reversible. According to the number of rows of hammer head, it can be divided into single row type and multi row type. At present, single rotor hammer crusher is widely used, but double rotor crusher is seldom used. Figure 3-7 shows 1600 × 1600 hammer crusher. It is a single rotor, multi row, irreversible hammer crusher, which is composed of casing 1, rotor 2, grate bar 3, crushing plate 4 and rolling bearing 5

figure 3-7 φ one thousand and six hundred × 1600 hammer crusher structure

1 - shell; 2-rotor; 3-grate bar; 4-crushing plate; The shell of 5-rolling bearing is composed of lower body, rear upper cover, left side wall and right side wall, and each part is connected by bolts. A feeding port is opened at the upper part, and all the inner walls of the casing are inlaid with manganese steel lining plates, which can be replaced after wear. The lower body is welded by common carbon structural steel plate. In order to place bearings on both sides to support the rotor, steel plates are welded into bearing supports. The lower part of the casing is directly placed on the concrete foundation and fixed with anchor bolts. In order to facilitate the maintenance, adjustment and replacement of the grate bar, the front and rear sides of the lower body are provided with an access hole. The left side wall, the right side wall and the rear upper cover are also welded with steel plates

The rotor consists of spindle 1 and hammer frame 2. As shown in Figure 3-8. The hammerhead pin shaft 4 and the hammerhead 3 are suspended between the hammers in four rows on the hammer frame. In order to prevent the axial movement of the hammer frame and the hammerhead, the two ends of the hammer frame are fixed with the pressing hammer plate 5 and the lock nut. The rotor is supported on two rolling bearings 6, which are bolted to the support of the lower frame. In addition to the bolts, there are two locating pins to fix the center distance between the two bearings. In addition, in order to make the rotor store certain kinetic energy ring operation, a flywheel 7 is installed at one end of the spindle. The motor directly drives the rotor to rotate through the elastic coupling

figure 3-8 φ one thousand and six hundred × 1600 hammer crusher rotor

1 - spindle; 2 - hammer frame; 3-hammer head; 4 - hammer pin shaft; 5 - compact hammer plate; 6 - rolling bearing; 7-flywheel

grate bars are installed on the arc-shaped side plates symmetrical on both sides of the rotor. The arrangement of the grate bars of the hammer crusher is perpendicular to the movement direction of the hammer head, which is in the arc shape with a certain gap with the rotary radius of the rotor. The qualified crushing procts are discharged through the grate bar gap, and the materials larger than the grate gap are broken on the grate bar by the impact and grinding of the hammer head until they are discharged through the grate bar

The cross-section shape of grate bar can be divided into triangle, rectangle and trapezoid, which are usually made of manganese steel or forged. Forging can increase wear resistance and toughness

after the material enters the hammer crusher, it will be broken by the impact of high-speed rotary hammer. The broken materials obtain kinetic energy from the hammer head, and impact the lining plate and grate bar on the inner wall of the shell at a high speed to be broken for the second time. After that, the materials whose particle size is smaller than the gap of grate bar will be discharged from the gap, while the materials with larger block size will bounce back into the rotary track of the hammer head, and will be crushed by the continuous impact of the hammer head. In the process of material crushing, there is also impact crushing between materials

(1) although the proction capacity of hammer crusher is widely used, there is no theoretical calculation formula which can summarize various influencing factors for its parameter calculation. In the design and selection, it is determined by referring to the actual proction index of similar equipment in similar enterprises, or roughly calculated according to the empirical formula. The proction capacity of hammer crusher is related to crusher specification, hammer weight, rotating speed, crushing ratio, feeding uniformity and physical properties

non metallic mineral processing machinery and equipment

where q is the proction capacity of hammer crusher (n / h)

Z -- the number of discharging grate bars

L -- length of discharging grate (m)

C -- width of discharge grate (m)

D -- discharge particle size (m)

μ—— The coefficient of material looseness and non-uniformity is generally 0.015-0.07, which is higher than that of small crusher μ The value is small, and it is suitable for large crusher μ The value is larger

k -- the number of hammerhead rows in the circumferential direction of the rotor, k = 3-6

n -- rotor speed (R / min)

γ—— The stacking weight of materials (T / M < sup > 3 < / sup >)

The factors considered in this formula are comprehensive, but the calculation is cumbersome. The calculated results are close to the actual proction capacity

(2) power

non metallic mineral processing machinery and equipment

where n is the required power of hammer crusher (kw)

G -- weight of each hammer (n)

R -- outer radius of rotor (m)

n -- speed of hammer crusher (R / min)

m -- the total number of hammers of hammer crusher

η—— The effective utilization rate of hammer crusher is generally 0.70-0.85

k -- correction coefficient, which is related to the circular speed of the hammer head and decreases with the increase of the circular speed. The reason is that when the speed is high, not every hammer hits the material, and some hammers can't hit and consume part of the energy. The relationship between K value and circumferential velocity V is shown in table 3-3

Table 3-3 correction coefficient

formula (3-13) is applicable to low speed hammer crusher with n = 200 ~ 350r / min

(3) the speed of rotor is related to the weight of hammer head. The hammer crusher does not rely on all the energy of the rotating parts to crush the materials, but only on the work done by the kinetic energy of the hammer head. The kinetic energy E of hammer head is:

non metallic mineral processing machinery and equipment

where e is the kinetic energy of hammer head (n · m)

W -- weight of hammer head (n)

G -- acceleration of gravity (M / s < sup > 2 < / sup >)

V -- circular velocity of hammer head (M / s)

non metallic mineral processing machinery and equipment

where n is rotor speed (R / min)

D -- when the rotor rotates, the hammer head becomes radial e to the centrifugal force, and the outer diameter of the rotor is expressed by D

According to equation (3-16), the kinetic energy E of hammer head is directly proportional to the weight W, circumferential velocity V and rotor speed n of hammer head. The heavier the hammer head is and the higher the rotor speed is, the greater the crushing capacity will be. However, the power consumption will also rise sharply, which will also cause strong wear of hammer head, grate bar and lining plate. From the point of view of equipment manufacturing, high speed of machine parts processing, installation accuracy requirements also increased. Due to the development of proction and the improvement of creative technology, the speed of hammer crusher is graally increasing

The rotor speed of hammer crusher is generally the same as the rated speed of motor. The rotor speed is controlled by the circular speed of the hammer. Generally, the circular speed of hammer head of single rotor hammer crusher is v = 35 ~ 55m / s, and the rotor speed is n = 750 ~ 1500r / min; For some heavy single rotor Hammer Crushers (rotor diameter is more than 1.8m) and double rotor hammer crushers, v = 18-25m / s, n = 200-250r / min, usually U < 30m / S is called slow speed hammer crusher. When the speed is low, the weight of hammer head is large, the quantity is small, and the proct particle size is coarse. And V > 30m / S is called fast hammer crusher. When the speed is high, the weight of hammer head is more, and the particle size of proct is finer

(4) hammer weight the kinetic energy of the hammer is directly proportional to the weight of the hammer, that is, the greater the kinetic energy of the hammer, the higher the crushing efficiency. But the greater the weight of the hammer, the greater the centrifugal force generated by rotation, which will affect and damage other parts of the hammer crusher rotor. Therefore, the weight of the hammer should be moderate

the correct selection of hammer weight has a great influence on crushing effect and energy consumption. The weight of the selected hammer head must meet the requirements of crushing the material block at one blow and minimizing the useless power consumption. At the same time, the hammer head must not be tilted backward. Therefore, the kinetic energy generated by the movement of the hammer head must be equal to the strike work required to crush the material, as shown in formula (3-16)

According to the principle of equal momentum, we can get the following formula:

WV = (W + W < sub > 1 < / sub >) V < sub > 2 < / sub > (n · M / s)

< P >

non metallic mineral processing machinery and equipment

where W is the weight of hammer head converted to strike Center (n)

W < sub > 1 < / sub > -- weight of the largest material block (n)

V -- the circumferential velocity (M / s) at the beginning of hammering

V < sub > 2 < / sub > -- the circumferential velocity of the hammer after hitting the material (M / s)

let the coefficient of formula (3-17) be equal to 0.5-0.4, The < / P < p

< p < p < p

< p < p < p

< p

< p < p < p < p < p < p

formula (3-18) (3-18) (3-18) (3-18) (3-19) (3-19) (3-19) (3-19) (3-19) (3-19) (3-19) (3-19) (3-19) (3-19) (3-19 < 3-19) in the < 3-19 < 3-19 < 3-19 < 3-19 < 3-19) in the < 3-20) W. The greater one should be chosen

the number of hammers of a hammer crusher can be 4-300. The weight of each hammer head installed on the rotor should be equal to ensure a good balance of the rotor; When replacing the hammer head, it should be replaced in pairs according to the relative position, otherwise it will cause rotor rotation imbalance, unstable work and premature wear of bearing

Thirdly, the hammer crusher is a kind of high-speed rotary machine which crushing materials by impact. In order to make it work normally, the static balance test must be carried out after the rotor is assembled or repaired, that is, when the rotor stops rotating, it is not allowed to return 1 / 10 circle at any position. All parts on the rotor (except hammer head) should be processed accurately. Generally, it is manufactured and assembled according to the secondary and tertiary accuracy. If the center of gravity of the rotor is away from its geometric center line (or rotation axis), static unbalance will occur. If the rotation axis of the rotor is not consistent with its main inertia axis, dynamic unbalance will occur. These two kinds of unbalance phenomena will cause severe vibration in the operation of the machine, thus shortening the service life of the machine and causing vibration of the plant

hammer is a vulnerable part of hammer crusher, which mainly requires wear resistance. Improving the wear resistance of the hammer head can rece the repair downtime and improve the work efficiency. At present, high manganese steel containing 12% - 14% manganese is commonly used for hammers, and hammers forged or stamped with high carbon steel are also widely used. When crushing hard materials, a layer of 3-4mm hard alloy or a layer of thin manganese steel sheet is welded on the hammer surface. When making hammers, all hammers should be equal in weight, the deviation should be less than ± 0.5kg, and the total weight difference of every two symmetrical hammers should be within ± 0.05kg ring installation. In this way, the rotor can be easily balanced and the time of installation and test run can be shortened

The wear of hammer head is relatively fast, and the manufacturing cost is very high. Therefore, cast iron welding rod is commonly used for surfacing, so as to save welding cost

4. The hammer crusher can not crush granite, because the hammer crusher is mainly used to crush medium hardness and brittle materials, such as limestone, coal and other materials. The compressive strength of the crushed materials is not more than 150kg / cm & #;. But we all know that granite is very hard stone, so it is not suitable
as for the working principle of hammer crusher: the hammer crusher mainly relies on the impact action to crush materials. The crushing process is roughly like this. When the materials enter the crusher, they are crushed by the impact of the high-speed rotary hammer. The crushed materials obtain kinetic energy from the hammer and rush to the baffle and screen bar in the frame at high speed. At the same time, the materials collide with each other and are crushed many times. The materials smaller than the gap between the screen bars are discharged from the gap, and some larger materials are discharged, On the screen bar, the material is crushed again by the impact, grinding and extrusion of the hammer head, and the material is extruded from the gap by the hammer head. So as to obtain the proct with the required granularity. There are two types of hammer crusher: reversible and irreversible. The rotor of reversible hammer crusher is reversible, which is generally used for fine crushing; The rotor of irreversible hammer crusher is irreversible, which is generally used for medium crushing
structure of hammer crusher: hammer crusher case, rotor, hammer head, impact lining plate, sieve plate, etc
if you are interested, you can visit our website. If you are willing to buy, you can directly dial the contact information on our website. I believe we are professional. Shending mining machinery

5. Shandong Chengming construction machinery, the largest crusher proction base in Shandong, has more than ten years of research and development and manufacturing elite team of crushers, perfect after-sales service, and the quality of Shanyuan crushers depends on facts. Hammer crusher is the main proct of Shanyuan crusher, high cost performance is the characteristic of this series, welcome to search: Chengming construction machinery or Shanyuan crusher for details.

6. Now most of them are crocodile style

7. Look at the website below, some information you can use

8. Impact crusher is widely used in ore crushing, railway, highway and construction instry sand proction. Hammer crusher is suitable for crushing medium hardness and brittle materials in mining, cement, coal, metallurgy, building materials, highway, combustion and chemical departments. If you want to sell it, I suggest you go to xingkuang machinery to have a look. I hope you can buy your own machine.

9. 1 Mineral

mineral is a kind of simple substance or compound with certain chemical composition and physical characteristics, which is formed by the geological process of chemical elements in the crust. There are three states of minerals in nature: solid state, such as quartz, orthoclase and mica; Liquid, such as water, natural mercury; Gaseous, such as carbon dioxide, hydrogen sulfide, etc< (2) rock

1. Physical and mechanical properties of rock

rock is a mineral aggregate regularly composed of one or more minerals under various geological processes. Physical mechanics of rock. Its properties are shown in three aspects: deformation characteristics, strength characteristics and failure forms

2. Strength characteristics of rock

under the action of external load, when the stress reaches a certain limit, the rock will be destroyed, and this limit is the strength limit of rock. Specific indicators are: one-way compressive strength, tensile strength, shear strength, three-way compressive strength< The failure forms of rock can be divided into brittle failure and plastic failure< 4. Roof and floor rock of coal seam (1) roof rock. From the point of view of coal mining, according to the degree of deformation and collapse of roof strata, the roof strata of coal seam can be divided into pseudo roof, direct roof and basic roof (also known as main roof)< (2) floor rock. The floor rock of coal seam can be divided into direct floor and basic floor (also called old floor)< (3) strata

strata system is used to describe the spatial relationship between the upper and lower strata. Internationally, the commonly used stratigraphic division units are boundary, system and series. Geological age is used to describe the time relationship between the upper and lower strata. Based on the division of stratigraphic system, the development history of the earth's crust is correspondingly divided into several units of geological age, i.e. epoch, epoch and epoch< (4) geological structure

sedimentary strata (including coal seams) are generally horizontal or nearly horizontal in formation, and are continuous and complete in a certain range. But later, e to the influence of crustal movement, the shape and occurrence of rock strata changed. The result of deformation and displacement of rock strata caused by crustal movement is called tectonic change. According to its manifestation, tectonic change can be divided into fold and fault. This change in the spatial shape of rock strata caused by crustal movement is called geological structure

1. Occurrence factors of rock stratum

in order to explain the spatial form of inclined rock stratum, occurrence factors are commonly used to express, that is, the strike, tendency and dip angle of rock stratum< The basic unit of fold structure is called fold. A fold is a bend in the rock< (1) basic form of fold: generally, the basic form of fold is divided into anticline and syncline< (2) fold elements: fold elements include core, wing, axial plane, axis and hinge< (3) fold classification: according to the occurrence of fold axial plane, it can be divided into vertical fold, inclined fold and inverted fold

3. Fracture structure

the rock stratum has mechanical failure under the action of external or internal force, which makes the rock lose continuity and integrity. No matter displacement or not, it is said that the rock stratum has fracture. After fracture, if there is no significant displacement in the rock layers on both sides, it is called crack or joint; If a significant displacement occurs, it is called a fault< According to the genesis, fractures can be divided into primary fractures, weathering fractures and structural fractures

according to the relationship between the occurrence of fractures and the occurrence of strata, it can be divided into strike fractures, dip fractures and oblique fractures

2) faults are fault structures in which the strata have significant displacement along the fault surface< (1) fault elements. In order to describe the nature, location and spatial form of faults, we give some names to each part of faults. The basic components of these faults are called fault elements< (2) fault classification. According to the direction of the relative movement of the upper and lower wall of the fault, it can be divided into normal fault, reverse fault and inferred layer. According to the dip angle of fault plane, reverse faults are divided into thrust faults (dip angle of fault plane is greater than 45 DEG;), thrust faults (dip angle of fault plane is greater than 45 DEG;) Overthrust (the dip angle of fault plane is 45 DEG; ～ 25° The dip angle of fault plane is 25 & deg; According to the relationship between fault strike and strata strike, faults are divided into strike faults and oblique faults. In areas where fault structures are developed, many faults often appear in some combination form, including graben and horst, imbricate structure and stepped structure< (5) groundwater

1. The classification of groundwater is divided into phreatic water and confined water according to the burial conditions of groundwater; According to the nature of groundwater aquifer, it can be divided into pore water, fissure water and karst water. Karst development must have four conditions: there must be a soluble rock layer, the rock layer must be permeable because of cracks, the water must be corrosive, and the water should flow in the rock layer

2. Chemical composition of groundwater

e to different chemical composition, groundwater shows different chemical properties. The common indicators reflecting the chemical properties of groundwater are total salinity, hydrogen ion concentration (pH value) and hardness of water

3. The source of mine water

in the proction process of coal mine, the underground water often flows into the roadway or working face, which is mine water. Mine water comes from surface water, aquifer water, old kiln water and fault water.