Silica sand desliming system
By combining a primary and secondary desliming system with multi-stage desliming buckets and screening devices, the problem of water waste in hydraulic desliming is solved, and efficient separation of silica sand and mud and efficient collection of finished sand are achieved.
Patent Information
- Application Number
- CN202423013234.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-06
AI Technical Summary
The existing hydraulic desliming methods in silica sand mining suffer from water waste and are difficult to efficiently separate silica sand from mud impurities.
A combined primary and secondary desliming system is adopted, which uses multi-stage desliming hoppers and screening devices, combined with the design of clear water tanks and sewage tanks, to achieve the separation of silica sand and mud and the recycling of water resources.
It improves the efficiency of silica sand desliming, reduces water waste, and achieves efficient separation and collection of finished sand of different mesh sizes.
Smart Images
Figure CN223587342U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of silica sand desliming, and particularly relates to a silica sand desliming system. BACKGROUND
[0002] At present, the raw sand of silica sand mining needs to be fully scrubbed, deslimed and screened to obtain finished sand of different mesh grades. Finished sand is mostly used in the fields of oil exploitation and casting, and the silica sand applied in the field of casting has the highest requirement on the content of mud, so in order to improve the subsequent utilization rate of raw sand, sufficient desliming must be carried out.
[0003] With the improvement of dust emission requirements of environmental protection standards, hydraulic desliming has become the main desliming method adopted by the silica sand mining industry, and although continuous washing of silica sand solves the problem of dust emission, there is a problem of waste of a large amount of water resources. UTILITARY MODEL
[0004] The utility model aims at providing a silica sand desliming system for improving the desliming efficiency of silica sand and reducing the waste of water resources.
[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a silica sand desliming system, comprising:
[0006] The first desliming group comprises a first desliming hopper and a second desliming hopper, the feed inlet of the first desliming hopper is used for passing in a mud-water-sand mixture, the discharge outlet of the first desliming hopper and the feed inlet of the second desliming hopper are communicated, and the first desliming hopper and the second desliming hopper are used for sequentially desliming the mud-water-sand mixture and outputting sand material;
[0007] The first finished product screen group comprises a first finished product screen, a second finished product screen and a third finished product screen which are sequentially and spacedly arranged from top to bottom, the first finished product screen is arranged at the discharge outlet of the second desliming hopper, the mesh numbers of the first finished product screen, the second finished product screen and the third finished product screen are sequentially increased, and the first finished product screen group is used for obtaining coarse finished product sand of different mesh numbers;
[0008] The second desliming group comprises a third desliming hopper and a fourth desliming hopper, the discharge outlet of the third finished product screen is communicated with the feed inlet of the third desliming hopper, the discharge outlet of the third desliming hopper and the feed inlet of the fourth desliming hopper are communicated, and the third desliming hopper and the fourth desliming hopper are used for sequentially desliming the sand material for the second time;
[0009] The clean water pool is used for respectively passing in water sources to the first desliming group and the second desliming group;
[0010] The sewage pool is respectively communicated with the drainage end of the first desliming group and the second desliming group, and the sewage pool is used for collecting the mud-water mixture generated when the first desliming group and the second desliming group deslime;
[0011] The secondary finished product screen group comprises a fourth finished product screen and a fifth finished product screen which are sequentially and spacedly arranged from top to bottom, the mesh number of the fourth finished product screen is smaller than that of the fifth finished product screen, and the secondary finished product screen group is used for obtaining finished product sand with different mesh numbers.
[0012] Optionally, in the silica sand desliming system, the first desliming hopper, the second desliming hopper, the third desliming hopper and the fourth desliming hopper have the same structure.
[0013] Optionally, in the silica sand desliming system, the first desliming hopper comprises:
[0014] The material storage bin is used for containing the mud-water-sand mixture, and a sand outlet is formed in the bottom of the material storage bin and used for passing the silica sand;
[0015] The discharge pipe is arranged at the bottom of the material storage bin and communicates with the sand outlet.
[0016] The material conveying pipe has one end located in the material storage bin and is used for inputting the mud-water-sand mixture into the material storage bin.
[0017] The water conveying pipe has a water outlet located in the material storage bin and another end communicating with the clean water pool, and is used for conveying the water source in the clean water pool into the material storage bin, and the discharge capacity of the discharge pipe is smaller than the sum of the input capacity of the material conveying pipe and the input capacity of the water conveying pipe.
[0018] The support and mud discharging assembly has a bottom plate and a side plate connected with each other, the bottom plate surrounds the outer wall of the material storage bin and is fixedly connected, the side plate surrounds the bottom plate, and the bottom plate, the side plate and the outer wall of the material storage bin form an overflow groove, the bottom plate is provided with a desliming hole communicating with the overflow groove, and the desliming hole communicates with the sewage pool through a desliming pipe and is used for discharging the mud-water mixture.
[0019] Optionally, in the silica sand desliming system, the one end of the material conveying pipe extending into the material storage bin is closed, and a plurality of strip-shaped holes are formed in the side wall of the one end of the material conveying pipe extending into the material storage bin and are arranged at intervals around the outer wall of the material conveying pipe, and the strip-shaped holes are used for discharging the mud-water-sand mixture.
[0020] Optionally, in the silica sand desliming system, the baffle is suspended at the sand outlet through a support rod, the baffle is coaxial with the material conveying pipe, the diameter of the baffle is greater than the pipe diameter of the material conveying pipe and smaller than the diameter of the sand outlet, and the diameter of the baffle is greater than the pipe diameter of the discharge pipe.
[0021] Optionally, in the silica sand desliming system, the first desliming hopper further comprises a base connected with the outer wall of the discharge pipe.
[0022] Optionally, in the silica sand desliming system, the diameter of the baffle is 550mm-650mm, and the pipe diameter of the discharge pipe is 90mm-110mm.
[0023] Optionally, in the silica sand desliming system, a distance between the water outlet of the water delivery pipe and the sand outlet is less than a distance between the material outlet of the material delivery pipe and the sand outlet.
[0024] Optionally, the distance between the water outlet of the water delivery pipe and the sand outlet is 150mm-500mm.
[0025] Optionally, a diameter of the material delivery pipe is 300mm-500mm, a diameter of the water delivery pipe is 90mm-110mm, a diameter of the desliming pipe is 180mm-210mm, and a width of the overflow tank is 250mm-350mm.
[0026] Optionally, a bottom of the overflow tank is 300mm-600mm lower than a top edge of the side plate, and the bottom of the overflow tank is 200mm-500mm lower than a top edge of the material storage bin.
[0027] Optionally, in the silica sand desliming system, a mesh number of the first finished product sieve is 20-40.
[0028] Optionally, a mesh number of the second finished product sieve is 30-50.
[0029] Optionally, a mesh number of the third finished product sieve is 40-70.
[0030] Optionally, a mesh number of the fourth finished product sieve is 50-100.
[0031] Optionally, a mesh number of the fifth finished product sieve is 70-140.
[0032] Optionally, in the silica sand desliming system, further comprising:
[0033] a collection hopper configured to collect the sand material discharged from the third finished product sieve;
[0034] a slurry pump disposed between a material outlet of the collection hopper and a material inlet of the third desliming hopper, the slurry pump configured to control an on-off of the sand material output from the material outlet of the collection hopper.
[0035] Compared with existing technologies, when using the above technical solution, the operator introduces the mud-water-sand mixture into the feed inlet of the first desliming hopper, and simultaneously introduces water from the clear water tank into the first desliming hopper. After being washed by the water, the larger sand particles are affected by gravity and discharged through the discharge outlet of the first desliming hopper to the second desliming hopper for further desliming and output as sand. During this process, the mud-water mixture produced by the first and second desliming hoppers flows into the wastewater tank for collection. The output sand then passes sequentially through the first, second, and third finished product screens. Since the mesh size of the first, second, and third finished product screens gradually increases, different mesh sizes of coarse finished sand are left on the surfaces of each screen. The operator can then separately process the sand from the first, second, and third finished product screens. The coarse finished sand screened out is collected and stored in the sand silo. The sand flowing out from the third finished screen is fed into the third desliming hopper through the inlet, and water from the clear water pool is also fed into the third desliming hopper. After being washed by the water, the larger sand particles are smoothly discharged from the outlet of the third desliming hopper by gravity and sent to the fourth desliming hopper for further desliming and output. During this process, the mud-water mixture generated by the secondary desliming in the third and fourth desliming hoppers is also collected in the wastewater pool. The output sand needs to pass through the fourth and fifth finished screens in sequence. Since the mesh size of the fourth finished screen is smaller than that of the fifth finished screen, refined finished sand of different mesh sizes is screened and left on the surfaces of the fourth and fifth finished screens. The operators collect the refined finished sand screened out from the fourth and fifth finished screens and store it in the sand silo. Compared to the traditional method of rinsing with a large amount of water, this application involves two desludge removal processes. The mud-water mixture generated during the desludge removal process of the primary and secondary desludge removal groups is collected in a wastewater tank to obtain coarse and fine finished sand of different mesh sizes. This ensures the recycling of water during the operation and reduces water waste. Attached Figure Description
[0036] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0037] Figure 1 This is a schematic diagram of the overall structure of a silica sand desliming system provided in an embodiment of this utility model;
[0038] Figure 2 for Figure 1 Enlarged view of the local structure at point A;
[0039] Figure 3 for Figure 2 Cross-sectional view along the BB direction;
[0040] Figure 4 For Figure 2 The first sludge removal hopper is shown in a plan view.
[0041] Reference signs:
[0042] 1 - first sludge removal hopper; 11 - material storage bin; 111 - baffle; 112 - support rod; 113 - sand outlet; 12 - material conveying pipe; 121 - strip-shaped hole; 13 - water conveying pipe; 14 - material outlet pipe; 15 - bottom plate; 151 - overflow groove; 16 - side plate; 17 - sludge removal pipe; 2 - second sludge removal hopper; 3 - first-stage finished product screen group; 31 - first finished product screen; 32 - second finished product screen; 33 - third finished product screen; 4 - third sludge removal hopper; 5 - fourth sludge removal hopper; 61 - clean water pool; 62 - sewage pool; 7 - second-stage finished product screen group; 71 - fourth finished product screen; 72 - fifth finished product screen; 8 - driving device; 9 - collecting hopper; 91 - slurry pump. DETAILED DESCRIPTION
[0043] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in conjunction with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and not to limit the present application.
[0044] 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.
[0045] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited. The meaning of "several" is one or more, unless otherwise specifically limited.
[0046] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc. indicate the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the present application and simplifying the description, and should not be construed as indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present application.
[0047] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "installation", "link", "connection" should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can pass through the intermediate medium indirectly connected, can be two element internal communication or two element mutual action relationship.For ordinary skilled person in the art, the above-mentioned term can be understood according to the specific meaning of the utility model.
[0048] As Figures 1-4 The utility model discloses a silica sand desliming system, including: first desliming group, first finished product screen group 3, second desliming group, clean water pool 61, sewage pool 62 and second finished product screen group 7.
[0049] Among them, first desliming group includes first desliming hopper 1 and second desliming hopper 2, and the feed inlet of first desliming hopper 1 is used to pass into muddy water sand mixture, and the discharge port of first desliming hopper 1 and the feed inlet of second desliming hopper 2 are communicated, and first desliming hopper 1 and second desliming hopper 2 are used to deslime muddy water sand mixture in turn and output sand material;First finished product screen group 3 includes first finished product screen 31, second finished product screen 32 and third finished product screen 33 arranged in turn and spaced apart from top to bottom, and the first finished product screen 31 is placed in the discharge port of second desliming hopper 2, and the mesh number of first finished product screen 31, second finished product screen 32 and third finished product screen 33 increases in turn, and first finished product screen group 3 is used to obtain different mesh number of coarse finished product sand;Second desliming group includes third desliming hopper 4 and fourth desliming hopper 5, and the discharge port of third finished product screen 33 is communicated with the feed inlet of third desliming hopper 4, and the discharge port of third desliming hopper 4 and the feed inlet of fourth desliming hopper 5 are communicated, and third desliming hopper 4 and fourth desliming hopper 5 are used to deslime sand material in turn;Clean water pool 61 is used to pass into water source to first desliming group and second desliming group respectively;Sewage pool 62 is communicated with the drainage end of first desliming group and second desliming group respectively, and sewage pool 62 is used to collect muddy water mixture generated when desliming first desliming group and second desliming group;Second finished product screen group 7 includes fourth finished product screen 71 and fifth finished product screen 72 arranged in turn and spaced apart from top to bottom, and the mesh number of fourth finished product screen 71 is less than that of fifth finished product screen 72, and second finished product screen group 7 is used to obtain different mesh number of fine finished product sand.
[0050] Specific implementation, as Figure 1As shown, the operator passes the slurry sand mixture from the feed port of the first desliming hopper 1, and also passes the water source in the clean water pool 61 into the first desliming hopper 1, so that after the slurry sand mixture is washed by the water source, the sand with larger particles is affected by gravity and is output through the discharge port of the first desliming hopper 1 into the second desliming hopper 2 to be deslimed again and output the sand, in this process, the slurry mixture produced by the first desliming hopper 1 and the second desliming hopper 2 is flowed into the sewage pool 62 for collection, and the output sand is sequentially passed through the first finished sieve 31, the second finished sieve 32 and the third finished sieve 33, because the mesh number of the first finished sieve 31, the second finished sieve 32 and the third finished sieve 33 gradually increases, so that different mesh numbers of coarse finished sand are respectively screened on the surfaces of the first finished sieve 31, the second finished sieve 32 and the third finished sieve 33, and the operator can collect the coarse finished sand screened on the first finished sieve 31, the second finished sieve 32 and the third finished sieve 33 into the sand warehouse; the sand flowing out of the third finished sieve 33 is passed from the feed port of the third desliming hopper 4, and the water source in the clean water pool 61 is also passed into the third desliming hopper 4, so that after the sand is washed by the water source again, the sand with larger particles is affected by gravity and is smoothly output through the discharge port of the third desliming hopper 4 into the fourth desliming hopper 5 to be deslimed again and output the sand, in this process, the slurry mixture produced by the third desliming hopper 4 and the fourth desliming hopper 5 is also flowed into the sewage pool 62 for collection, and the output sand needs to be sequentially passed through the fourth finished sieve 71 and the fifth finished sieve 72, because the mesh number of the fourth finished sieve 71 is smaller than that of the fifth finished sieve 72, so that different mesh numbers of fine finished sand are respectively screened on the surfaces of the fourth finished sieve 71 and the fifth finished sieve 72, and the operator collects the fine finished sand screened on the fourth finished sieve 71 and the fifth finished sieve 72 into the sand warehouse. Compared with the traditional washing method by a large amount of water source, the present application collects the slurry mixture produced by the primary desliming group and the secondary desliming group in the desliming process from the sewage pool 62 to obtain coarse finished sand and fine finished sand with different mesh numbers, which ensures the recycling of the water source in the working process, thereby reducing the waste of the water source.
[0051] As shown in Figure 1 Specifically, in the present embodiment, the first desliming hopper 1, the second desliming hopper 2, the third desliming hopper 4 and the fourth desliming hopper 5 all have the same structure, which facilitates the processing and manufacturing of the desliming structure of the primary desliming group and the secondary desliming group, and reduces the processing procedures and manufacturing costs.
[0052] As shown in Figure 2 and Figure 3As shown, specifically, in the present embodiment, the first desilting bucket 1 comprises a material containing bin 11, a material conveying pipe 12, a water conveying pipe 13, a support and desilting assembly, and a material discharging pipe 14, the material containing bin 11 is used for containing the mixture of water, mud and sand, a sand outlet 113 is formed at the bottom of the material containing bin 11 and is used for discharging the sand; the material discharging pipe 14 is arranged at the bottom of the material containing bin 11 and is in communication with the sand outlet 113; one end of the material conveying pipe 12 is located in the material containing bin 11 and is used for inputting the mixture of water, mud and sand into the material containing bin 11; a water outlet of the water conveying pipe 13 is located in the material containing bin 11, the other end of the water conveying pipe 13 is in communication with the clean water pool 61, and the water conveying pipe 13 is used for conveying the water source in the clean water pool 61 into the material containing bin 11; the discharging capacity of the material discharging pipe 14 is less than the sum of the input capacity of the material conveying pipe 12 and the input capacity of the water conveying pipe 13; the material containing bin 11 is nested in the support and desilting assembly, the support and desilting assembly has a bottom plate 15 and a side plate 16 connected with each other, the bottom plate 15 surrounds the outer wall of the material containing bin 11 and is fixedly connected, the side plate 16 surrounds the bottom plate, and the bottom plate 15, the side plate 16 and the outer wall of the material containing bin 11 form an overflow groove 151, the bottom plate 15 is provided with a desilting hole in communication with the overflow groove 151, and the desilting hole is in communication with the sewage pool 62 through a desilting pipe 17 and is used for discharging the mixture of water and mud.
[0053] In operation, the mixture of water, mud and sand enters the material containing bin 11 of the first desilting bucket 1 through the material conveying pipe 12, and at the same time, the water conveying pipe 13 conveys the water source in the clean water pool 61 into the material containing bin 11, the water source and the mixture of water, mud and sand are mixed at the bottom of the material containing bin 11, and as the water source is washed, the mixture of water, mud and sand is continuously diluted, so that the sand with large particles and the mud in the mixture of water, mud and sand are separated in the water, the sand with large particles gradually sinks to the bottom of the material containing bin 11 due to the gravity, and the mud is suspended in the water or flows with the water, and gradually overflows from the top edge of the material containing bin 11 into the overflow groove 151, and then flows into the sewage pool 62 through the desilting hole at the bottom of the overflow groove 151 for collection, and as the discharging capacity of the material discharging pipe 14 is less than the sum of the input capacity of the material conveying pipe 12 and the input capacity of the water conveying pipe 13, the mixture of water, mud and sand can stay at the bottom of the material containing bin 11 for a short time and the sand after being washed flows out from the sand outlet 113 and is output to the material containing bin 11 of the second desilting bucket 2 through the material discharging pipe 14, and the above process is repeated to separate and collect the sand and the mixture of water and mud in the second desilting bucket 2, and the sand and the mud are naturally separated after being desilted twice, so that the desilting efficiency is improved and the operation is facilitated.
[0054] It should be noted that the working processes of the third desilting bucket 4 and the fourth desilting bucket 5 in the secondary desilting group are the same as those of the first desilting bucket 1 and the second desilting bucket 2 in the primary desilting group, and will not be repeated here.
[0055] As shown in FIG. 1, the first desilting bucket 1 and the second desilting bucket 2 are connected in series through the material conveying pipe 12 and the water conveying pipe 13, and the material discharging pipe 14 of the second desilting bucket 2 is connected to the material containing bin 11 of the third desilting bucket 4. Figure 2As shown, specifically, in the embodiment, the one end of the feeding pipe 12 extending into the material container 11 is closed, and a plurality of strip-shaped holes 121 are arranged on the side wall of the one end of the feeding pipe 12 extending into the material container 11, the plurality of strip-shaped holes 121 are arranged at intervals around the outer wall of the feeding pipe 12, and the strip-shaped holes 121 are used for discharging the mud-sand-water mixture.
[0056] In operation, the mud-sand-water mixture is output into the material container 11 through the plurality of strip-shaped holes 121 on the side wall of the feeding pipe 12, so that the mud-sand-water mixture is affected by the structure of the feeding pipe 12 and cannot vertically fall to the bottom of the material container 11 in the vertical direction, but flows out from the side wall of the feeding pipe 12, avoiding the mud-sand-water mixture from being concentrated and accumulated at the center area of the bottom of the material container 11 and damaging the structure of the center area of the baffle 111. When the mud-sand-water mixture spreads to all directions on the plate surface of the baffle 111 and is continuously washed by the water source, the first desilting bucket 1 can sufficiently desilt the input mud-sand-water mixture, and the desilting efficiency is improved.
[0057] Specifically, in the silica sand desilting system, the baffle 111 is further arranged at the sand outlet 113 by the support rod 112, the baffle 111 is coaxial with the feeding pipe 12, the diameter of the baffle 111 is greater than the pipe diameter of the feeding pipe 12 and less than the diameter of the sand outlet 113, and the diameter of the baffle 111 is greater than the pipe diameter of the discharge pipe 14.
[0058] As shown in Figure 2 and Figure 3 In operation, since the baffle 111 is coaxial with the feeding pipe 12, the diameter D1 of the baffle 111 is greater than the pipe diameter D2 of the feeding pipe 12 and less than the diameter D3 of the sand outlet 113, and the diameter D1 of the baffle 111 is greater than the pipe diameter D4 of the discharge pipe 14, so that the mud-sand-water mixture flowing out from the feeding pipe 12 is blocked by the baffle 111 at the sand outlet 113 during falling, spreads to all directions on the plate surface of the baffle 111, stays near the area of the sand outlet 113 for a short time and is continuously washed by the water source, sufficiently desilts the input mud-sand-water mixture, and the desilting efficiency is improved.
[0059] As shown in Figure 2 Specifically, in the embodiment, the first desilting bucket 1 further includes a base connected with the outer wall of the discharge pipe 14. In operation, the operator can install and fix the first desilting bucket 1, the second desilting bucket 2, the third desilting bucket 4 and the fourth desilting bucket 5 on the corresponding working platforms through the base, saving manpower and being convenient to operate.
[0060] As shown in Figure 2 and Figure 3As shown, specifically, in the present embodiment, the diameter D1 of the baffle 111 is 550mm-650mm, and the pipe diameter D4 of the discharge pipe 14 is 90mm-110mm. Among them, the diameter D1 of the baffle 111 can be 550mm, 600mm, 620mm, 650mm, etc., the pipe diameter D2 of the feed pipe 12 is 90mm, 100mm, 105mm, 110mm, etc., and the pipe diameter D4 of the discharge pipe 14 can be 90mm, 95mm, 100mm, 110mm, etc. Here, the diameter D1 of the baffle 111 and the pipe diameter D4 of the discharge pipe 14 are not limited to the cases listed in the present embodiment. In operation, the slurry-sand mixture flowing out of the feed pipe 12 cannot directly flow out from the projection area of the pipe opening of the feed pipe 12 on the bottom surface of the storage bin 11, but can only be blocked by the baffle 111 after falling to the bottom of the storage bin 11, continue to spread around the baffle 111 and continue to be washed by the water source, and then flow out from the discharge opening 113 after the slurry-sand mixture stays on the bottom of the storage bin 11 for a short time and is fully washed by the water source. Since the diameter of the baffle 111 is much larger than the pipe diameter of the feed pipe 12, the slurry-sand mixture can stay on the bottom of the storage bin 11 for a short time and be fully washed by the water source before flowing out from the discharge opening 113. The pipe diameter D4 of the discharge pipe 14 is also much smaller than the diameter D1 of the baffle 111, so that the flow rate of the sand flowing out of the discharge pipe 14 is relatively small, ensuring that the slurry-sand mixture stays on the bottom of the storage bin 11 for a sufficient time and is fully washed by the water source, avoiding the risk of structural damage caused by the direct contact of the slurry-sand mixture with the discharge pipe 14 and the direct flow of the slurry-sand mixture without being fully washed by the water source, prolonging the service life of the first desludging hopper 1 and ensuring the desludging efficiency.
[0061] As Figure 2As shown, specifically, in the present embodiment, the distance between the water outlet of the water supply pipe 13 and the bottom of the material container 11 is less than the distance between the material outlet of the material supply pipe 12 and the bottom of the material container 11; and / or, the distance between the water outlet of the water supply pipe 13 and the bottom of the material container 11 is 150mm-500mm. Wherein the distance h3 between the water outlet of the water supply pipe 13 and the bottom of the material container 11 can be 150mm, 200mm, 300mm, 450mm, 500mm, etc., and the distance h3 between the water outlet of the water supply pipe 13 and the bottom of the material container 11 is not limited to the cases listed in the present embodiment. Since the water outlet of the water supply pipe 13 is closer to the bottom of the material container 11 than the material outlet of the material supply pipe 12, when the water source and the slurry sand mixture are input into the material container 11, the water source flowing out of the outlet of the water supply pipe 13 always reaches the bottom of the material container 11 before the slurry sand mixture, thereby ensuring that the water source continuously washes the slurry sand mixture and flows upward, quickly realizing the dilution of the slurry sand mixture, so that a large amount of slurry mixture can be suspended on the upper layer of the larger-grained sand under the action of the water source at the bottom, and then overflow from the top edge of the material container 11 and flow out from the desliming pipe 17, ensuring the desliming effect of the first desliming hopper 1 and improving the desliming efficiency of the silica sand desliming system.
[0062] As Figure 2 and Figure 3As shown, specifically, in the present embodiment, the pipe diameter D2 of the material conveying pipe 12 is 300-500 mm, the outer diameter of the material containing bin 11 is 10-15 times the pipe diameter D2 of the material conveying pipe 12, the pipe diameter D5 of the water conveying pipe is 90-110 mm, and the pipe diameter D6 of the desliming pipe is 180-210 mm. Among them, the pipe diameter D2 of the material conveying pipe 12 can be 300 mm, 350 mm, 400 mm, 500 mm, etc., the outer diameter of the material containing bin 11 can be 10 times, 12 times, 13 times, 15 times, etc. of the pipe diameter D2 of the material conveying pipe 12, the pipe diameter D5 of the water conveying pipe 13 can be 90 mm, 95 mm, 100 mm, 110 mm, etc., the pipe diameter D7 of the desliming pipe 17 can be 180 mm, 200 mm, 205 mm, 210 mm, etc., and the width D7 of the overflow tank 151 can be 250 mm, 280 mm, 300 mm, 350 mm, etc. Here, the pipe diameter D2 of the material conveying pipe 12, the outer diameter of the material containing bin 11, the pipe diameter D5 of the water conveying pipe 13, the width D7 of the overflow tank 151, and the pipe diameter D6 of the desliming pipe 17 are not limited to the cases listed in the present embodiment, as long as the pipe diameter D2 of the material conveying pipe 12 and the outer diameter of the material containing bin 11 meet the requirement that the slurry sand mixture can be smoothly output into the material containing bin 11. Preferably, the width D7 of the overflow tank 151 is 30 mm, the outer diameter of the material containing bin 11, i.e. the diameter D8 of the top edge of the material containing bin 11, is 3500 mm, and the diameter D9 surrounded by the side plate 16 is 3800 mm, so as to avoid the situation that the volume of the material containing bin 11 is too small to cause a small amount of sand in the slurry sand mixture to flow from the desliming pipe 17 to the sewage pool 62 along with the slurry mixture when the water source is washed, thereby causing waste of silica sand materials. The pipe diameter of the water conveying pipe 13 is much smaller than the pipe diameter of the desliming pipe 17, so that the slurry mixture generated during the desliming process can be quickly flowed to the sewage pool for collection through the desliming pipe 17 with a larger pipe diameter. The water source can continuously and slowly wash the slurry sand mixture at the bottom of the material containing bin 11 through the water conveying pipe 13 with a smaller pipe diameter, thereby avoiding the risk that the slurry sand mixture is directly flowed out from the sand outlet 113 due to a large impact force, and improving the desliming efficiency and desliming effect.
[0063] As Figure 2As shown, specifically, in the present embodiment, the bottom of the overflow groove 151 is 300-600 mm lower than the top edge of the side plate 16, and the bottom of the overflow groove 151 is 200-500 mm lower than the top edge of the material storage bin 11. The distance h1 between the bottom of the overflow groove 151 and the top edge of the side plate 16 can be 300 mm, 400 mm, 450 mm, 500 mm, 600 mm, etc., and the distance h2 between the bottom of the overflow groove 151 and the top edge of the material storage bin 11 can be 200 mm, 350 mm, 400 mm, 500 mm, etc. Here, the distance h1 between the bottom of the overflow groove 151 and the top edge of the side plate 16 and the distance h2 between the bottom of the overflow groove 151 and the top edge of the material storage bin 11 are not limited to the cases listed in the present embodiment, as long as the bottom of the overflow groove 151 is lower than the top edge of the material storage bin 11 and lower than the top edge of the side plate 16, and the top edge of the side plate 16 is higher than the top edge of the material storage bin 11. When the water level of the sludge mixture in the material storage bin 11 rises continuously with the input of the water source, since the height of the side plate 16 supporting the sludge discharge assembly is higher than the height of the material storage bin 11, when the sludge mixture fills the material storage bin 11 and the water level rises continuously with the input of the water source, the sludge mixture overflowing from the material storage bin 11 flows to the overflow groove 151 through the top edge of the material storage bin 11 and gradually fills the overflow groove 151. Since the top edge of the side plate 16 is higher than the top edge of the material storage bin 11, the overflowing sludge mixture can be temporarily stored in the overflow groove 151 and then flow out of the de-sludging holes in the bottom plate 15, avoiding the sludge mixture overflowing from the top edge of the side plate 16 after de-sludging, and being affected by gravity and continuously discharged downward along the de-sludging pipe 17 into the sewage tank 62, thereby ensuring full recovery and utilization of the sludge mixture.
[0064] Specifically, in the embodiment, the first finished screen 31 includes 20-40 mesh; and / or, the second finished screen 32 includes 30-50 mesh; and / or, the third finished screen 33 includes 40-70 mesh; and / or, the fourth finished screen 71 includes 50-100 mesh; and / or, the fifth finished screen 72 includes 70-140 mesh. For example, the first finished screen 31 includes 20, 30, 35 or 40 mesh; the second finished screen 32 includes 30, 40, 45 or 50 mesh; the third finished screen 33 includes 40, 55, 60, 65 or 70 mesh; the fourth finished screen 71 includes 50, 65, 80, 95 or 100 mesh; and the fifth finished screen 72 includes 70, 100, 120, 135 or 140 mesh. In the embodiment, the first finished screen 31, the second finished screen 32, the third finished screen 33, the fourth finished screen 71 and the fifth finished screen 72 are not limited to the above-mentioned mesh. By setting the finished screens with different mesh, the coarse finished sand with different mesh can be obtained after the first desliming group, and the fine finished sand with different mesh can be obtained after the second desliming group, so that the required finished sand can be obtained more accurately, and the desliming efficiency is improved.
[0065] As shown in Figure 1 , specifically, in the embodiment, the silica sand desliming system further includes a collecting hopper 9 and a slurry pump 91. The collecting hopper 9 is used to collect the sand discharged from the third finished screen 33. The slurry pump 91 is arranged between the discharge port of the collecting hopper 9 and the feeding port of the third desliming hopper 4, and is used to control the on-off of the sand output from the discharge port of the collecting hopper 9.
[0066] In operation, after the sand discharged from the third finished screen 33 is collected by the collecting hopper 9, the slurry pump 91 is started to continuously output the sand to the second desliming group for secondary desliming to obtain fine finished sand. The operator can control the flow of the sand output to the second desliming group through the slurry pump 91, which is convenient for operation.
[0067] As shown in Figure 1 , specifically, in the embodiment, the silica sand desliming system further includes a driving device 8. The driving end of the driving device 8 is connected with the first finished screen 31, the second finished screen 32, the third finished screen 33, the fourth finished screen 71 and the fifth finished screen 72 respectively. The driving device 8 is used to drive the first finished screen 31, the second finished screen 32, the third finished screen 33, the fourth finished screen 71 and the fifth finished screen 72 to shake in the horizontal direction respectively.
[0068] In work, the operator starts the driving device 8, and the driving end of the driving device 8 drives the first finished product sieve 31, the second finished product sieve 32, the third finished product sieve 33, the fourth finished product sieve 71 and the fifth finished product sieve 72 to vibrate in the horizontal direction at the same time, so that the first finished product sieve 31, the second finished product sieve 32, the third finished product sieve 33, the fourth finished product sieve 71 and the fifth finished product sieve 72 can quickly sieve out silica sand meeting the mesh number requirement, and the desliming efficiency of the silica sand desliming system and the use flexibility are improved.
[0069] In the description of the above-described embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.
[0070] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A silica sand desliming system, characterized in that, include: The primary desliming unit includes a first desliming hopper and a second desliming hopper. The feed inlet of the first desliming hopper is used to introduce a mud-water-sand mixture. The discharge outlet of the first desliming hopper is connected to the feed inlet of the second desliming hopper. The first desliming hopper and the second desliming hopper are used to deslim the mud-water-sand mixture in sequence and output sand. The primary finished product screen group includes a first finished product screen, a second finished product screen, and a third finished product screen arranged sequentially from top to bottom. The first finished product screen is placed at the discharge port of the second desliming hopper. The mesh size of the first finished product screen, the second finished product screen, and the third finished product screen increases sequentially. The primary finished product screen group is used to obtain coarse finished sand with different mesh sizes. The secondary desliming unit includes a third desliming hopper and a fourth desliming hopper. The discharge port of the third finished product screen is connected to the inlet of the third desliming hopper, and the discharge port of the third desliming hopper is connected to the inlet of the fourth desliming hopper. The third desliming hopper and the fourth desliming hopper are used to perform secondary desliming on the sand material in sequence. A clear water tank is used to supply water to the primary sludge desliming unit and the secondary sludge desliming unit, respectively. The wastewater tank is connected to the drainage ends of the primary sludge removal unit and the secondary sludge removal unit, respectively. The wastewater tank is used to collect the mud-water mixture generated during the sludge removal process of the primary sludge removal unit and the secondary sludge removal unit. The secondary finished product sieve group includes a fourth finished product sieve and a fifth finished product sieve arranged sequentially from top to bottom. The mesh size of the fourth finished product sieve is smaller than that of the fifth finished product sieve. The secondary finished product sieve group is used to obtain refined finished sand with different mesh sizes.
2. The silica sand desliming system according to claim 1, characterized in that, The first desliming hopper, the second desliming hopper, the third desliming hopper, and the fourth desliming hopper all have the same structure.
3. The silica sand desliming system according to claim 2, characterized in that, The first desliming hopper includes: A silo is provided for holding the mud-water-sand mixture. The bottom of the silo is provided with a sand outlet for passing silica sand. A discharge pipe is provided at the bottom of the material hopper, and the discharge pipe is connected to the sand outlet; A conveying pipe, one end of which is located inside the silo, is used to feed the mud-water-sand mixture into the silo; A water supply pipe, the outlet of which is located inside the material storage silo, and the other end of which is connected to the clear water tank, is used to supply water from the clear water tank into the material storage silo. The discharge volume of the discharge pipe is less than the sum of the input volume of the material supply pipe and the input volume of the water supply pipe. A sludge discharge assembly is provided, in which the silo is nested. The sludge discharge assembly has a connected bottom plate and side plates. The bottom plate surrounds the outer wall of the silo and is fixedly connected. The side plates surround the bottom plate. The bottom plate, the side plates, and the outer wall of the silo form an overflow channel. The bottom plate has a sludge removal hole that communicates with the overflow channel. The sludge removal hole is connected to the sewage tank through a sludge removal pipe for discharging the sludge-water mixture.
4. The silica sand desliming system according to claim 3, characterized in that, The end of the conveying pipe that extends into the silo is closed, and the side wall of the end of the conveying pipe that extends into the silo has a plurality of strip holes. The plurality of strip holes are arranged at intervals around the outer wall of the conveying pipe, and the strip holes are used to discharge the mud-water-sand mixture.
5. The silica sand desliming system according to claim 3, characterized in that, It also includes a baffle, which is suspended at the lower sand outlet by a support rod. The baffle is coaxial with the conveying pipe. The diameter of the baffle is larger than the diameter of the conveying pipe and smaller than the diameter of the lower sand outlet. The coverage width of the baffle is larger than the diameter of the discharge pipe.
6. The silica sand desliming system according to claim 3, characterized in that, The first desliming hopper also includes a base, which is connected to the outer wall of the discharge pipe.
7. The silica sand desliming system according to claim 5, characterized in that, The diameter of the baffle is 550mm to 650mm, and the diameter of the discharge pipe is 90mm to 110mm.
8. The silica sand desliming system according to any one of claims 3-7, characterized in that, The distance between the water outlet of the water conveying pipe and the sand outlet is less than the distance between the material outlet of the material conveying pipe and the sand outlet. And / or, the distance between the water outlet of the water supply pipe and the sand outlet includes 150mm to 500mm; And / or, the diameter of the conveying pipe is 300mm to 500mm, the diameter of the water conveying pipe is 90mm to 110mm, the diameter of the desludge removal pipe is 180mm to 210mm, and the width of the overflow trough is 250mm to 350mm. And / or, the bottom of the overflow trough is 300mm-600mm lower than the top edge of the side plate, and the bottom of the overflow trough is 200mm-500mm lower than the top edge of the hopper.
9. The silica sand desliming system according to claim 1, characterized in that, The mesh size of the first finished product sieve includes 20 mesh to 40 mesh; And / or, the mesh size of the second finished product sieve includes 30 mesh to 50 mesh; And / or, the mesh size of the third finished product sieve includes 40 mesh to 70 mesh; And / or, the mesh size of the fourth finished product sieve includes 50 mesh to 100 mesh; And / or, the mesh size of the fifth finished product sieve includes 70 mesh to 140 mesh.
10. The silica sand desliming system according to claim 1, characterized in that, Also includes: A collection hopper is used to collect the sand discharged from the third finished product screen. A slurry pump is installed between the discharge port of the collecting hopper and the inlet of the third desliming hopper. The slurry pump is used to control the on / off output of the sand material from the discharge port of the collecting hopper.