Silica sand hydraulic classification and sewage recycling system

Abstract

The invention discloses a silica sand hydraulic classification and sewage recycling system, and relates to the technical field of silica sand production. Each sewage treatment pool is provided with an overflow port, and the sewage treatment pools are sequentially connected through the overflow ports in the flowing direction of the sewage and are used for purifying the sewage, which is collected by the sewage collection pipeline and generated by each device in the silica sand hydraulic classification system; all devices in the silica sand hydraulic classification system are arranged on the wastewater filtering stratum, and scattered water in all links and deposited water in the sand bin are recycled and purified; and available water purified by the plurality of sewage treatment pools and the wastewater filtering stratum is conveyed to the circulating water pool, and the available water in the circulating water pool is conveyed to each device in the silica sand hydraulic classification system again. Sewage is purified through the sewage treatment pool and the wastewater filtering stratum and conveyed to the circulating water pool so as to be conveyed to all devices again, water circulation is achieved, and the production cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of silica sand production, and in particular to a silica sand hydraulic classification and sewage recycling system. Background Art

[0002] At present, the dust pollution problem in the production of silica sand industry has been solved by hydraulic classification technology, which has been significantly improved. Therefore, all silica sand mining companies are vigorously developing in the direction of hydraulic classification. However, the existing hydraulic classification scheme has caused a lot of water resources to be wasted.

[0003] Therefore, how to realize the recycling of water resources and save resources is a technical problem that technicians in this field currently need to solve. Summary of the invention

[0004] The purpose of the present invention is to provide a silica sand hydraulic classification and sewage recycling system for realizing the recycling of water resources and saving resources.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A silica sand hydraulic classification and sewage recycling system, comprising:

[0007] Silica sand hydraulic grading system;

[0008] A plurality of sewage treatment tanks, each of which is provided with an overflow port, and each of the sewage treatment tanks is sequentially connected through the overflow port along the flow direction of the sewage, so as to purify the sewage generated by each device in the silica sand hydraulic classification system collected through the sewage collection pipeline;

[0009] A wastewater filtration stratum, on which each device in the silica sand hydraulic classification system is arranged to recycle and purify spilled water in each link and sediment water in the sand reservoir;

[0010] A circulating water pool, to which the usable water purified by the plurality of sewage treatment pools and the wastewater filtration formation is transported, so that the usable water in the circulating water pool is transported again to various equipment in the silica sand hydraulic classification system.

[0011] Optionally, in the above-mentioned silica sand hydraulic classification and sewage recycling system, along the sewage flow direction, the multiple sewage treatment tanks include a first sewage treatment tank, a second sewage treatment tank, a third sewage treatment tank and a fourth sewage treatment tank, and a circulating water tank, and the first sewage treatment tank, the second sewage treatment tank, the third sewage treatment tank, the fourth sewage treatment tank and the circulating water tank are connected in sequence through the overflow port, so that the sewage is purified by the first sewage treatment tank, the second sewage treatment tank, the third sewage treatment tank and the fourth sewage treatment tank and then gathered in the circulating water tank.

[0012] Optionally, in the above-mentioned silica sand hydraulic classification and sewage recycling system, the wastewater filtration stratum is composed of sand and gravel of uneven sizes, and the laying thickness of the wastewater filtration stratum is 4m-5m.

[0013] Optionally, the above-mentioned silica sand hydraulic classification and sewage recycling system further includes a sludge cleaning ship, which is used to extract sludge from each of the sludge treatment tanks for recycling.

[0014] Optionally, in the above-mentioned silica sand hydraulic grading and sewage recycling system, the silica sand hydraulic grading system includes a mesh selection and screening section, and the silica sand hydraulic grading and sewage recycling system also includes a wastewater collector, and the wastewater collector is arranged at the bottom of the mesh selection and screening section, and the wastewater collector is used to collect the wastewater after the mesh selection and screening section has processed the silica sand.

[0015] Optionally, in the above-mentioned silica sand hydraulic grading and sewage recycling system, the silica sand hydraulic grading system includes a sand pit, a feed hopper, a vibrating feeder, a primary screening screen and a desludging auger arranged in sequence along the silica sand conveying direction, and the sand pit, the feed hopper, the vibrating feeder, the primary screening screen and the desludging auger are all arranged with nozzles for providing water, and the wastewater collector is respectively connected to each nozzle through a pipeline.

[0016] Optionally, in the above-mentioned silica sand hydraulic classification and sewage recycling system, the wastewater collector also transports part of the collected wastewater to the sewage treatment tank through a pipeline.

[0017] Optionally, in the above-mentioned silica sand hydraulic classification and sewage recycling system, the mesh screening section includes a first mesh screening sieve, a second mesh screening sieve, a third mesh screening sieve and a fourth mesh screening sieve into which the silica sand enters in sequence, and the wastewater collector is arranged at the bottom of the first and fourth mesh screening sieves, and the wastewater collector collects the wastewater from the first mesh screening sieve, the second mesh screening sieve, the third mesh screening sieve and the fourth mesh screening sieve through a pipeline.

[0018] Optionally, in the above-mentioned silica sand hydraulic classification and sewage recycling system, the first mesh selection screen, the second mesh selection screen, the third mesh selection screen and the fourth mesh selection screen are all provided with a plurality of evenly distributed nozzles.

[0019] Optionally, in the above-mentioned silica sand hydraulic grading and sewage recycling system, the silica sand hydraulic grading system includes a buffer sand discharger, through which the silica sand is transported to the mesh screening section, and a buffer distance is arranged between the discharge port of the buffer sand discharger and the bottom of the inner cavity of the buffer sand discharger.

[0020] In the silica sand hydraulic classification and sewage recycling system provided by the present invention, sewage generated by each device in the silica sand hydraulic classification system is recycled into a sewage treatment pool through a sewage collection pipe, and a plurality of sewage treatment pools are provided, and along the sewage treatment flow direction, each sewage treatment pool is sequentially connected through an overflow port, so that most of the sludge in the sewage in an upstream sewage treatment pool sinks to the bottom of the pool, and the sewage with less sludge content overflows to the next sewage treatment pool, and finally obtains usable cleaning water through multiple overflows, and the usable cleaning water is gathered in the circulating water pool and will be It is transported back to the production line for reuse. At the same time, each device in the silica sand hydraulic grading system is built on the wastewater filtration layer. Therefore, the water released in each link of the entire silica sand screening production and the water precipitated in the sand reservoir are filtered by the wastewater filtration layer and transported to the circulating water pool for reuse. Therefore, the silica sand hydraulic grading and sewage recycling system provided by the present invention efficiently collects the wastewater of the entire production process, and reuses it after purification, realizing the recycling of water in the entire silica sand hydraulic grading system, greatly saving water, and reducing resource waste and production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 The present invention is a schematic structural diagram of a silica sand hydraulic classification and sewage recycling system disclosed in an embodiment of the present invention.

[0023] Reference numerals:

[0024] 01 is a sand pit, 02 is a feed hopper, 03 is a vibrating feeder, 04 is a primary screening screen, 05 is a desludging auger, 06 is a four-stage scrubbing section, 07 is a slurry pump, 08 is a distributor, 09 is a desludging hopper, 10 is a buffer sand feeder, 11 is a first mesh screening screen, 12 is a second mesh screening screen, 13 is a third mesh screening screen, 14 is a fourth mesh screening screen, 15 is a wastewater collector, 16 is a screw feeder, 17 is a sand storage, 18 is a wastewater filtering stratum, 19 is a coarse sand collecting pool, 20 is the first sludge treatment pool, 21 is the second sewage treatment pool, 22 is the third sewage treatment pool, 23 is the fourth cement treatment pool, 24 is a circulating water pool, 25 is a sludge cleaning boat, and 26 is a nozzle. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

[0028] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The core of the present invention is to provide a silica sand hydraulic classification and sewage recycling system for realizing the recycling of water resources and saving resources.

[0031] like Figure 1 As shown, an embodiment of the present invention discloses a silica sand hydraulic classification and sewage recycling system, including a silica sand hydraulic classification system, a sewage treatment pool, a wastewater filtering layer 18 and a circulating water pool 24. Among them, the entire silica sand hydraulic grading system is built on the wastewater filtration layer 18, and the sewage collection pipeline is connected with each device in the silica sand hydraulic grading system, so as to recycle the sewage generated by each device, and a plurality of sewage treatment pools are arranged in sequence along the treatment flow direction of the sewage, and each sewage treatment pool is provided with an overflow port, so that two adjacent sewage treatments are connected through the overflow port, and the sewage collected by the sewage purification unit will flow into each sewage treatment pool in sequence, so most of the sludge in the sewage in an upstream sewage treatment pool sinks to the bottom of the pool, and the sewage with less sludge content overflows to the next sewage treatment pool, and finally obtains usable cleaning water through multiple overflows. These usable cleaning waters are gathered in the circulating water pool 24 and will be transported back to the production line for reuse. At the same time, the water scattered in each link of the entire silica sand screening production and the water precipitated in the sand reservoir 17 are filtered through the wastewater filtration layer 18 and returned to the circulating water pool 24 through the pipeline for reuse, realizing the recycling of water in the entire silica sand hydraulic grading system, greatly saving water consumption, reducing resource waste and production costs.

[0032] In a specific embodiment, the sewage purification unit is provided with a first sewage treatment tank 20, a second sewage treatment tank 21, a third sewage treatment tank 22, and a fourth sewage treatment tank 23, wherein the sewage collected through the sewage collection pipe first flows into the first sewage treatment tank 20, and part of the sludge in the sewage will be deposited at the bottom of the first sewage treatment tank 20, while the sewage with less sludge content will flow into the second sewage treatment tank 21 through the overflow port, and the sludge in the sewage mixture flowing into the second sewage treatment tank 21 will be deposited in the second sewage treatment tank 21 again, and the relatively clear sewage will flow into the third sewage treatment tank 22 through the overflow port. After the above-mentioned sewage treatment method is repeated many times, the finally available industrial water is gathered in the circulating water tank 24 for reuse, thereby realizing the recovery of sewage from various equipment in the silica sand hydraulic grading system, and recycling the sewage after treatment.

[0033] In a specific embodiment, the wastewater filtration layer 18 is paved with sand and gravel of uneven sizes, and the paving thickness of the wastewater filtration layer 18 ranges from 4m to 5m, such as 4m, 4.3m, 4.5m or 5m. If the paving thickness is less than this range, the filtration effect of the wastewater filtration may be poor, and the filtered water may not meet the requirements of production water. If the paving thickness is greater than this range, although the quality of the filtered water is further improved, the filtration efficiency of the wastewater filtration layer 18 may be reduced, and the quality is excessive relative to industrial water, and the paving cost is further increased.

[0034] In addition, the silica sand hydraulic grading and sewage recycling system also includes a sludge cleaning ship 25, through which the sludge deposited in the sewage treatment pool is extracted. On the one hand, the sludge deposited in the sewage treatment pool is cleaned in time to ensure the normal operation of the sewage treatment pool's sewage purification function. On the other hand, the extracted sludge can be discharged into the field and recycled as fertilizer, which further improves the recycling of resources by the silica sand hydraulic grading and sewage recycling system provided by the present invention and reduces the waste of resources.

[0035] like Figure 1 As shown, the silica sand hydraulic grading system mesh selection and screening part in the process of silica sand sorting, through the provision of a nozzle 26 to wash and screen the silica sand, the wastewater after this part of the washing is relatively clear, so the silica sand hydraulic grading and sewage recycling system also includes a wastewater collector 15, the wastewater collector 15 is arranged at the bottom of the mesh selection and screening part, so as to separately collect and recycle the wastewater of the mesh selection and screening part for recycling.

[0036] like Figure 1As shown, the silica sand raw material is transported to the sand pit 01 by a transport vehicle, and the silica sand in the sand pit 01 is transported to the feed hopper 02, and the silica sand is slowly and evenly fed to the primary screening screen 04 through the vibrating feeder 03. The large-particle silica sand with a mesh size of more than 10 is initially screened out by the primary screening screen 04, and the screened large-particle silica sand with a mesh size of more than 10 is sent to the coarse sand collection pool 19 by the conveying device, and the silica sand with a mesh size of less than 10 screened out on the inclined primary screening screen 04 is washed by the nozzle 26, the gravity of the silica sand itself, and the vibration, and then transported to the desludging auger 05. At the same time, the desludging auger 05 is also inclined and is also provided with a nozzle 26. The nozzle 26 is arranged on the top of the desludging auger 05, and water is flushed from the upper part of the desludging auger 05, while the silica sand is pushed upward from the bottom of the desludging auger 05. Therefore, the floating mud on the surface of the sand material is removed through the interaction of propulsion and water force, and then enters the four-stage scrubbing part 06 in sequence. The scrubbed silica sand, mud and water mixture is then transported to the distributor 08 by the slurry pump 07. The distributor 08 is divided by the water flow flushing and the gravity of the silica sand, and then transported to the desludging buckets 09 at each level for the desludging process. The wastewater collector 15 provided in this embodiment is connected with the nozzles 26 in the sand pit 01, the feed hopper 02, the vibrating feeder 03, the primary screening screen 04 and the desludging auger 05 through pipelines, and the wastewater of the mesh screening section is transported to the nozzles 26 of the above-mentioned links, so that it can be directly reused without being collected in a sewage treatment pool for multiple purification treatments, thereby significantly improving the efficiency of circulating water.

[0037] In addition, the wastewater collector 15 is connected to the first sewage treatment tank 20 through a sewage collection pipe, so that the excess wastewater is recycled to the sewage treatment tank for purification, to ensure that the wastewater generated in each link will be collected and recycled and flow into the entire water circulation system.

[0038] like Figure 1As shown, the mesh screening part includes a first mesh screening sieve 11, a second mesh screening sieve 12, a third mesh screening sieve 13 and a fourth mesh screening sieve 14, and the silica sand sequentially enters the first mesh screening sieve 11, the second mesh screening sieve 12, the third mesh screening sieve 13 and the fourth mesh screening sieve 14 for mesh screening, and the first mesh screening sieve 11, the second mesh screening sieve 12, the third mesh screening sieve 13 and the fourth mesh screening sieve 14 are correspondingly provided with a screw feeder 16, so that the screened silica sand is transported to the corresponding mesh sand storage 17 through the screw feeder 16, and Each screening screen of the mesh screening section is correspondingly provided with a nozzle 26. The water spraying and flushing by the nozzle 26 not only further removes the dust in the silica sand, but also prevents the silica sand from accumulating through flushing, which is beneficial to the transportation of the silica sand. The water spraying and flushing by the nozzle 26 also effectively suppresses dust pollution and improves the environmental protection ability of the silica sand hydraulic grading system. The wastewater collector 15 collects the wastewater generated during the mesh screening process of the first mesh screening screen 11, the second mesh screening screen 12, the third mesh screening screen 13 and the fourth mesh screening screen 14 through a pipeline.

[0039] In addition, the first mesh selection screen 11, the second mesh selection screen 12, the third mesh selection screen 13 and the fourth mesh selection screen 14 provided in this embodiment are all provided with a plurality of nozzles 26, and the nozzles 26 are evenly distributed. The flushing by the nozzles 26 not only prevents the accumulation of silica sand, but also helps to improve the screening of silica sand by the screen, and in the process of screening and grading silica sand by the screen, the dust in the silica sand can also be flushed by spraying water by the nozzles 26, which effectively inhibits the dust in the silica sand from spreading to the surrounding area. The set nozzles 26 prevent silica sand from accumulating, improve the working efficiency of screening and grading, and reduce dust pollution. In a specific embodiment, each screen is provided with 2 to 3 nozzles 26, or the technicians in this field set the number of nozzles 26 according to actual needs, which will not be listed one by one in this article.

[0040] like Figure 1 As shown, the silica sand hydraulic grading system provided in this embodiment is also provided with a buffer sand discharger 10, and the buffer sand discharger 10 is arranged between the desludging bucket 09 and the mesh screening part, so that the silica sand after the desludging bucket 09 is first transported to the buffer sand discharger 10 by the slurry pump 07, and a buffer distance is provided between the discharge port of the buffer sand discharger 10 and the bottom of the inner cavity of the buffer sand discharger 10, so that the buffer sand discharger 10 is discharged from the discharge port of the buffer sand discharger 10 into the first mesh selection screen 11 of the mesh selection screen part by overflow. Therefore, the buffer sand discharger 10 is provided to effectively reduce the impact force of the material discharge, prevent the first mesh selection screen 11 from being strongly eroded, play a better protective role for the first mesh selection screen 11, and extend the service life.

[0041] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0042] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A silica sand hydraulic classification and sewage recycling system, characterized in that: include: Silica sand hydraulic grading system; A plurality of sewage treatment tanks, each of which is provided with an overflow port, and each of the sewage treatment tanks is sequentially connected through the overflow port along the flow direction of the sewage, so as to purify the sewage generated by each device in the silica sand hydraulic classification system collected through the sewage collection pipeline; A wastewater filtration stratum, on which each device in the silica sand hydraulic classification system is arranged to recycle and purify spilled water in each link and sediment water in the sand reservoir; A circulating water pool, to which the usable water purified by the plurality of sewage treatment pools and the wastewater filtration formation is transported, so that the usable water in the circulating water pool is transported again to various equipment in the silica sand hydraulic classification system.

2. The silica sand hydraulic classification and sewage recycling system according to claim 1 is characterized in that: Along the flow direction of sewage, the multiple sewage treatment tanks include a first sewage treatment tank, a second sewage treatment tank, a third sewage treatment tank and a fourth sewage treatment tank circulating water tank which are arranged in sequence, and the first sewage treatment tank, the second sewage treatment tank, the third sewage treatment tank, the fourth sewage treatment tank and the circulating water tank are connected in sequence through the overflow port, so that the sewage is purified by the first sewage treatment tank, the second sewage treatment tank, the third sewage treatment tank and the fourth sewage treatment tank and then gathered in the circulating water tank.

3. The silica sand hydraulic classification and sewage recycling system according to claim 1 is characterized in that: The wastewater filtration stratum is composed of sand and gravel of uneven sizes, and the laying thickness of the wastewater filtration stratum is 4m-5m.

4. The silica sand hydraulic classification and sewage recycling system according to claim 1 is characterized in that: It also includes a sludge cleaning ship, which is used to extract the sludge in each sludge treatment pool for recycling.

5. The silica sand hydraulic classification and sewage recycling system according to claim 1 is characterized in that: The silica sand hydraulic grading system includes a mesh selection and screening section, and the silica sand hydraulic grading and sewage recycling system also includes a wastewater collector, which is arranged at the bottom of the mesh selection and screening section and is used to collect wastewater after the mesh selection and screening section has processed the silica sand.

6. The silica sand hydraulic classification and sewage recycling system according to claim 5, characterized in that: The silica sand hydraulic grading system comprises a sand pit, a feed hopper, a vibrating feeder, a primary screening screen and a desludging auger which are sequentially arranged along the silica sand conveying direction, and the sand pit, the feed hopper, the vibrating feeder, the primary screening screen and the desludging auger are all provided with nozzles for providing water, and the wastewater collector is respectively connected to each of the nozzles through a pipeline.

7. According to the silica sand hydraulic classification and sewage recycling system of claim 5, the wastewater collector also transports part of the collected wastewater to the sewage treatment tank through a pipeline.

8. The silica sand hydraulic classification and sewage recycling system according to claim 6, characterized in that: The mesh screening part includes a first mesh screening sieve, a second mesh screening sieve, a third mesh screening sieve and a fourth mesh screening sieve into which silica sand enters in sequence, and the wastewater collector is arranged at the bottom of the first mesh screening sieve and the fourth mesh screening sieve, and the wastewater collector collects wastewater from the first mesh screening sieve, the second mesh screening sieve, the third mesh screening sieve and the fourth mesh screening sieve through a pipeline.

9. According to the silica sand hydraulic classification and sewage recycling system of claim 7, the first mesh selection screen, the second mesh selection screen, the third mesh selection screen and the fourth mesh selection screen are all provided with a plurality of uniformly distributed nozzles.

10. The silica sand hydraulic classification and sewage recycling system according to claim 6, characterized in that: The silica sand hydraulic grading system comprises a buffer sand lowering device, through which the silica sand is transported to the mesh selection screen part, and a buffer distance is arranged between the discharge port of the buffer sand lowering device and the bottom of the inner cavity of the buffer sand lowering device.

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