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CN-224221538-U - Boron carbide powder water grading system

CN224221538UCN 224221538 UCN224221538 UCN 224221538UCN-224221538-U

Abstract

The utility model discloses a boron carbide powder water grading system, which belongs to the technical field of boron carbide powder production and is used for realizing grading material taking, greatly reducing discharged wastewater and lowering production cost and environmental protection cost. The device comprises an overflow classifying tank, a first separating unit, a water circulating unit and a second separating unit, wherein the first separating unit and the second separating unit are arranged in parallel, the first separating unit separates boron carbide powder water suspension with the particle size of less than 20 mu m through a filter press, the second separating unit separates boron carbide powder water suspension with the particle size of more than 20 mu m through a stepped classifying tank to produce boron carbide powder and water, water outlets of the first separating unit and the second separating unit are connected with the water circulating unit, the water circulating unit is used for recycling water produced by the first separating unit and the second separating unit and conveying the water into the water circulating unit, and the water circulating unit is communicated with the overflow classifying tank.

Inventors

  • ZHANG YUSHU
  • HUANG DAYUAN

Assignees

  • 大连正兴磨料有限公司

Dates

Publication Date
20260512
Application Date
20250512

Claims (10)

  1. 1. The boron carbide powder water classification system is characterized by comprising an overflow classification tank (1), a first separation unit and a water circulation unit; The first separation unit comprises a first filter press (2) and a first overflow pipeline (3), wherein a water inlet of the first overflow pipeline (3) is arranged at a water outlet position of the overflow classification tank (1), the first filter press (2) is arranged on the first overflow pipeline (3) and is positioned below a water outlet of the overflow classification tank (1), and a water inlet of the first overflow pipeline (3) is used for collecting boron carbide powder water suspension produced by the overflow classification tank (1); The utility model provides a water circulation unit includes low level water storage tank (4), force pump (5), pressure stabilizing device (6), water circulation pipeline (7), flowmeter (8), valve (9), low level water storage tank (4) set up in the below of first pressure filter (2), and the delivery port of first overflow pipeline (3) is located the top of low level water storage tank (4), the water inlet and the low level water storage tank (4) of water circulation pipeline (7) communicate, delivery port and overflow classifying tank (1) intercommunication, force pump (5), pressure stabilizing device (6), flowmeter (8), valve (9) set up on water circulation pipeline (7) along the fluid flow direction.
  2. 2. The boron carbide powder water classification system according to claim 1, wherein the first separation unit further comprises a storage tank (10), and the storage tank (10) and the first filter press (2) are sequentially arranged on the first overflow pipeline (3) along the flowing direction of the boron carbide powder water suspension.
  3. 3. The water classification system of boron carbide powder as claimed in claim 1, wherein the first separation units are arranged in parallel in groups.
  4. 4. The boron carbide powder water classification system of claim 1, further comprising a second separation unit comprising a second overflow line (11), a stepped collection tank (12); The water inlet of the second overflow pipeline (11) is arranged at the water outlet position of the overflow classifying tank (1), the water inlet of the second overflow pipeline (11) is used for collecting boron carbide powder water suspension produced by the overflow classifying tank (1), the water outlet of the second overflow pipeline (11) is positioned above the low-level water storage tank (4), and the stepped collecting tank (12) is positioned on the second overflow pipeline (11); At least one group of partition plates are arranged in the ladder collection tank (12) along the suspension flow direction, the top ends of the partition plates are lower than the top surface of the inner wall of the ladder collection tank (12), the ladder collection tank (12) is provided with a water inlet and a water outlet, the bottom end of the water inlet is higher than the top end of any partition plate, and the bottom end of the water outlet is lower than the top end of any partition plate.
  5. 5. The water classification system of boron carbide powder of claim 4, wherein the number of the partition plates is three, the three partition plates are sequentially arranged along the flow direction of the suspension, the heights of the three partition plates are sequentially reduced along the flow direction of the suspension, a first partition plate and a region where a water inlet of the ladder collection tank (12) is positioned form a first sedimentation cavity, a middle sedimentation cavity is formed between two adjacent partition plates, a third partition plate and a region where a water outlet of the ladder collection tank (12) is positioned form a final sedimentation cavity, the opening position of the water inlet faces the first sedimentation cavity, each sedimentation cavity forms an overflow channel through the top end of the partition plate, and when the liquid level of the upstream sedimentation cavity exceeds the top end of the corresponding partition plate, fluid enters the downstream sedimentation cavity through the overflow channel.
  6. 6. The water classification system of boron carbide powder of claim 4, wherein said second separation units are arranged in parallel.
  7. 7. The water classification system of boron carbide powder according to claim 4, wherein boron carbide powder having a particle size of 20 μm or less is collected by a first separation unit, and boron carbide powder having a particle size of 20 μm or more is collected by a second separation unit.
  8. 8. The boron carbide powder water classification system according to claim 1, wherein the water circulation unit further comprises a high-level water storage tank (18), the high-level water storage tank (18) is arranged on the water circulation pipeline (7) and is positioned between the pressure stabilizing device (6) and the flowmeter (8), and the high-level water storage tank (18) is positioned above the overflow classification tank (1).
  9. 9. The boron carbide powder water classification system according to claim 1, further comprising a pretreatment unit comprising a ball mill (13), a boron carbide powder conveying pipeline (14), a pneumatic diaphragm pump (15), a reaction tank (16) and a second filter press (17), wherein one end of the boron carbide powder conveying pipeline (14) is communicated with the ball mill (13), the other end of the boron carbide powder conveying pipeline is communicated with the second filter press (17), and the pneumatic diaphragm pump (15), the reaction tank (16) and the boron carbide powder conveying pipeline (14) are sequentially arranged along the boron carbide powder conveying direction.
  10. 10. The boron carbide powder water classification system according to claim 1, wherein the overflow classification tank (1) comprises a tank body (19), an aggregate tank (20) and a conveying pipe (21), wherein the lower part of the tank body (19) is of a conical structure, a water inlet is formed in the lower bottom end of the tank body (19), the aggregate tank (20) is formed in the tank body (19), openings are formed in the upper end and the lower end of the aggregate tank (20), the upper end opening of the aggregate tank (20) is used for allowing boron carbide powder water suspension to enter, the upper end of the conveying pipe (21) is communicated with the lower end opening of the aggregate tank (20), the lower end opening of the conveying pipe (21) penetrates through the side wall of the tank body (19) and is located outside the tank body (19), and the lower end opening of the conveying pipe (21) is a water outlet of the overflow classification tank (1).

Description

Boron carbide powder water grading system Technical Field The utility model relates to the technical field of production of boron carbide powder, in particular to a water grading system of boron carbide powder. Background With the continuous progress of boron carbide processing technology, the application range of the boron carbide serving as a new material is wider and wider, and the market demand is larger and larger. The traditional production process of boron carbide powder is to classify the ground and purified powder to produce products with different granularity sections, and the classification method is dry classification and water classification. The technical effect of accurate classification can not be realized by using dry classification, and the technical problem of waste of water resources is caused by the fact that a large amount of water resources are needed to carry out classification extraction on the obtained slurry after the boron carbide powder obtained by grinding is purified by using water classification. Disclosure of utility model In view of the above, the utility model discloses a water grading system for boron carbide powder, which particularly uses water to grade the boron carbide powder, and the concrete scheme is as follows: a boron carbide powder water classification system comprises an overflow classification tank, a first separation unit and a water circulation unit; the first separation unit comprises a first filter press and a first overflow pipeline, a water inlet of the first overflow pipeline is arranged at the water outlet position of the overflow classifying tank, the first filter press is arranged on the first overflow pipeline and is positioned below the water outlet of the overflow classifying tank, and the water inlet of the first overflow pipeline is used for collecting boron carbide powder water suspension produced by the overflow classifying tank; The water circulation unit comprises a low-level water storage tank, a pressure pump, a pressure stabilizing device, a water circulation pipeline, a flowmeter and a valve, wherein the low-level water storage tank is arranged below the first filter press, a water outlet of the first overflow pipeline is positioned above the low-level water storage tank, a water inlet of the water circulation pipeline is communicated with the low-level water storage tank, a water outlet of the water circulation pipeline is communicated with the overflow classification tank, and the pressure pump, the pressure stabilizing device, the flowmeter and the valve are arranged on the water circulation pipeline along the fluid flow direction. In addition to the technical scheme of the utility model, the first separation unit further comprises a storage tank, and the storage tank and the first filter press are sequentially arranged on the first overflow pipe line along the flowing direction of the boron carbide powder water suspension liquid. In addition to the technical scheme of the utility model, the first separation units are arranged in parallel. The utility model also comprises a second separation unit, wherein the second separation unit comprises a second overflow pipeline and a stepped collection tank; The water inlet of the second overflow pipeline is arranged at the water outlet position of the overflow classifying tank, the water inlet of the second overflow pipeline is used for collecting boron carbide powder water suspension produced by the overflow classifying tank, the water outlet of the second overflow pipeline is positioned above the low-level water storage tank, and the stepped collecting tank is positioned on the second overflow pipeline; The ladder collection tank is internally provided with at least one group of clapboards along the flowing direction of suspension liquid, the top ends of the clapboards are lower than the top surface of the inner wall of the ladder collection tank, the ladder collection tank is provided with a water inlet and a water outlet, the bottom end height of the water inlet is higher than the top end height of any clapboards, and the bottom end height of the water outlet is lower than the top end height of any clapboards. According to the technical scheme, the number of the three groups of the partition plates is three, the three groups of the partition plates are sequentially arranged along the flow direction of the suspension liquid, the heights of the three groups of the partition plates are sequentially reduced along the flow direction of the suspension liquid, a first sedimentation cavity is formed in the area where the first group of partition plates and the water inlet of the ladder collection tank are located, a middle sedimentation cavity is formed between two adjacent groups of partition plates, a final sedimentation cavity is formed in the area where the third group of partition plates and the water outlet of the ladder collection tank are located, the opening position of the water inlet fa