Scraper for oxide ore in Baotou Steel
Publish: 2021-05-01 03:47:07
1. Personally, if we don't change the recer, the quality of the scraper is OK. We always use it in our factory. After all, it's an old brand.
2. Mud scraper uses scraper to scrape and dredge mud, and other transport equipment to clean mud. Suction mud scraper is equipped with negative pressure suction equipment to transport the mud directly through the pipeline
3. Go to the regular store to check. It's not a guess what's broken. It needs to be detected. There may be false positives. Maybe something's broken. It's the last word to rush to overhaul. The more you delay, the more you spend!
4. There are not many vulnerable parts of the equipment, and the damage is not fast. If you really want to prepare, the main thing is the bearing and the walking wheel, which are rarely broken. The bearing has no problem in a year and a half, and the walking wheel will not be broken for several years.
5. In general, it needs to be opened for a short time, so the effect will be better, the operation is more convenient, and the cleaning is also very clean
6.
The driving device drives the mud scraper to rotate around the center of the sedimentation tank. After the raw water is precipitated in the sedimentation tank, the supernatant is discharged from the overflow weir plate. The sludge deposited at the bottom of the tank, driven by the logarithmic spiral curve scraper, flows slowly along the bottom of the tank to the central sludge collecting tank and is discharged through the sludge discharge pipe. At the same time, the scum on the pool surface is concentrated in the area between the scum scraper and the scum baffle. When the working bridge passes through the scum discharge cylinder floating on the pool surface, the scum discharge cylinder is pressed under the liquid level, and the scum is discharged out of the pool through the discharge cylinder
7. Sludge scraper is a kind of equipment that scrapes sludge from sedimentation tank to sludge hopper, mainly including rotary type, chain scraper type and truss car type. It is generally used for primary sedimentation tank. Sludge suction machine is a kind of equipment to suck out the activated sludge deposited at the bottom of the tank, mainly including rotary type and truss type. Generally used for secondary sedimentation tank. Most suction machines have scraper to assist suction, so they are generally called suction scraper.
8. There are two types and three types for you to choose from: a pump suction or siphon type truss car mud scraper; B ordinary horizontal flow mud scraper
in order to improve the working effect, the above two types of equipment are generally equipped with scum scraping plate, which can not only scrape scum, but also separate floating oil
generally, instrial wastewater dosing projects are designed as primary sedimentation tanks 4-6 times a day (times = unilateral), while secondary sedimentation tanks are usually designed 6 times a day
Design and operation are two different things. Design should be more conservative and can be debugged boldly when running. Only in this way can we continue to tap the potential according to the actual situation
if the sludge scraper is selected as the sludge discharge mode, the sludge discharge water will be discharged along with the operation of the equipment. Generally, the sludge scraper needs to be determined according to the volume of the sludge storage hopper. Generally, the sludge storage hopper is designed according to the half day sludge storage capacity, so in theory, you can discharge sludge at least twice a day. In practice, if there is less sludge, it should be at least once a day. The main thing is to prevent solidification and caking, otherwise you will be waiting for the bad things to happen
the sludge discharge process of the horizontal flow sedimentation tank is very learned. You should know that the sludge is generally concentrated in the first 1 / 3, so your truss car suction machine (with scum scraping board) had better stop in the center of the tank every day. On the one hand, it is convenient to scrape scum; on the other hand, it is the route to scrape sludge, which is not the so-called "unilateral" in design, But I personally think that the most reasonable and efficient "semi unilateral", a scraping cycle can be composed of several semi unilateral. If you use a, B and C to represent the front end, middle and end of the horizontal sedimentation tank of the truss car mud scraper and suction machine, then the mud scraper route of your truss car mud scraper and suction machine is: b-a-b-a-b-c-b, or b-a-b-a-b-a-b-b-c-b. Many of the sewage treatment plants I designed and debugged have been taught to operate like this on site. The effect is really immediate and efficient. One to two of the above cycles, or even half a cycle, per day is enough
from the effect point of view, I personally like to use the pump suction mud scraper, especially in the primary sedimentation tank, which can settle sand and flocculent alum. Many projects have been done and many projects have been seen, so now I basically use the pump suction mud scraper, which is much better than the siphon or ordinary advection mud scraper, mainly because of its high equipment efficiency, The effect is stable. It can be adjusted according to the quantity and quality of water. It is not afraid of the water quality and quantity of small projects. It is especially suitable for small water projects and instrial wastewater projects, or municipal projects with potential instrial wastewater pollution (such as sewage plants in instrial areas). Ordinary horizontal flow mud scraper can also be used in the primary sedimentation tank
the siphon type can be considered for the secondary sedimentation tank (it's better to insist on the upper pump type). The siphon type can save the trouble of pump maintenance, but it's better not to use the ordinary horizontal flow mud scraper for the secondary sedimentation tank, which is easy to run mud
the disadvantage of pump suction type is that if the front grille of the water pump is not well done, it is easy to block the water pump, and the repair of the water pump is also a very troublesome thing, especially if the grille is very bad, then repairing the pump of the truss car will break your heart. It's better to have the fine grille of 4mm or less. It's better to be more serious when installing the grille. Many unscrupulous installation companies are very fooling. There is a gap at the bottom of the grille
through practical experience, I will give you some meaningful parameters
generally, the moisture content of sludge in the primary sedimentation tank is very low, only 97 ~ 98%, and it can be directly dehydrated after simple thickening (4 ~ 6 hours). After dosing, such as PAC and ferric salt flocculant, the water content of sludge is lower, about 96-97%
the moisture content of sludge in secondary sedimentation tank is higher, generally more than 99%.
in order to improve the working effect, the above two types of equipment are generally equipped with scum scraping plate, which can not only scrape scum, but also separate floating oil
generally, instrial wastewater dosing projects are designed as primary sedimentation tanks 4-6 times a day (times = unilateral), while secondary sedimentation tanks are usually designed 6 times a day
Design and operation are two different things. Design should be more conservative and can be debugged boldly when running. Only in this way can we continue to tap the potential according to the actual situation
if the sludge scraper is selected as the sludge discharge mode, the sludge discharge water will be discharged along with the operation of the equipment. Generally, the sludge scraper needs to be determined according to the volume of the sludge storage hopper. Generally, the sludge storage hopper is designed according to the half day sludge storage capacity, so in theory, you can discharge sludge at least twice a day. In practice, if there is less sludge, it should be at least once a day. The main thing is to prevent solidification and caking, otherwise you will be waiting for the bad things to happen
the sludge discharge process of the horizontal flow sedimentation tank is very learned. You should know that the sludge is generally concentrated in the first 1 / 3, so your truss car suction machine (with scum scraping board) had better stop in the center of the tank every day. On the one hand, it is convenient to scrape scum; on the other hand, it is the route to scrape sludge, which is not the so-called "unilateral" in design, But I personally think that the most reasonable and efficient "semi unilateral", a scraping cycle can be composed of several semi unilateral. If you use a, B and C to represent the front end, middle and end of the horizontal sedimentation tank of the truss car mud scraper and suction machine, then the mud scraper route of your truss car mud scraper and suction machine is: b-a-b-a-b-c-b, or b-a-b-a-b-a-b-b-c-b. Many of the sewage treatment plants I designed and debugged have been taught to operate like this on site. The effect is really immediate and efficient. One to two of the above cycles, or even half a cycle, per day is enough
from the effect point of view, I personally like to use the pump suction mud scraper, especially in the primary sedimentation tank, which can settle sand and flocculent alum. Many projects have been done and many projects have been seen, so now I basically use the pump suction mud scraper, which is much better than the siphon or ordinary advection mud scraper, mainly because of its high equipment efficiency, The effect is stable. It can be adjusted according to the quantity and quality of water. It is not afraid of the water quality and quantity of small projects. It is especially suitable for small water projects and instrial wastewater projects, or municipal projects with potential instrial wastewater pollution (such as sewage plants in instrial areas). Ordinary horizontal flow mud scraper can also be used in the primary sedimentation tank
the siphon type can be considered for the secondary sedimentation tank (it's better to insist on the upper pump type). The siphon type can save the trouble of pump maintenance, but it's better not to use the ordinary horizontal flow mud scraper for the secondary sedimentation tank, which is easy to run mud
the disadvantage of pump suction type is that if the front grille of the water pump is not well done, it is easy to block the water pump, and the repair of the water pump is also a very troublesome thing, especially if the grille is very bad, then repairing the pump of the truss car will break your heart. It's better to have the fine grille of 4mm or less. It's better to be more serious when installing the grille. Many unscrupulous installation companies are very fooling. There is a gap at the bottom of the grille
through practical experience, I will give you some meaningful parameters
generally, the moisture content of sludge in the primary sedimentation tank is very low, only 97 ~ 98%, and it can be directly dehydrated after simple thickening (4 ~ 6 hours). After dosing, such as PAC and ferric salt flocculant, the water content of sludge is lower, about 96-97%
the moisture content of sludge in secondary sedimentation tank is higher, generally more than 99%.
9.
The traveling scraper is suitable for the horizontal sedimentation tank in water supply and drainage engineering. It scrapes the sludge settled at the bottom of the tank to the sludge collecting tank, and skims the scum from the tank surface to the sludge collecting tank. Scum scraper
can be set according to user's requirements
10. The following acts belong to pyramid selling: (1) organizers or business operators, through developing personnel, require other personnel developed by the developed personnel to join in, and calculate and pay remuneration (including material incentives and other economic benefits, the same below) to the developing personnel based on the number of personnel developed directly or indirectly, so as to seek illegal benefits 2 The organizers or business operators, through the developers, require the developed personnel to pay fees or pay fees in disguised form by way of subscribing for commodities, so as to obtain the qualification of joining or developing other personnel, and seek illegal interests.
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