A gypsum slurry three-stage precipitation filtration device

Abstract

This utility model belongs to the field of gypsum slurry technology, and particularly relates to a three-stage sedimentation and filtration device for gypsum slurry. It includes a support plate, a support frame above the support plate, a primary filter box above the support frame, an inlet above the primary filter box, a secondary filter tank connected to one side of the primary filter box via a first discharge pipe, a support base below the secondary filter tank, a tertiary filter box connected to one side of the secondary filter tank via a second discharge pipe, and a discharge pipe on one side of the tertiary filter box. The primary filter box contains a vibrating plate assembly for preliminary filtration of the slurry, and a spiral feeding assembly below the vibrating plate assembly. This utility model fundamentally solves the shortcomings of traditional processes in handling complex slurries, achieving deep removal of pollutants and efficient resource recovery while ensuring continuous operation, thus possessing significant economic and environmental benefits.

Description

Technical Field

[0001] This utility model belongs to the field of gypsum slurry technology, and in particular relates to a three-stage sedimentation and filtration device for gypsum slurry. Background Technology

[0002] Industrial gypsum slurry generates a large amount of byproducts or wastewater during industrial production. These slurries typically have high solid content, a wide particle size distribution including coarse particles, fine particles, and colloidal microparticles, and complex compositions. They contain unreacted absorbents, fly ash, inert substances, soluble salts such as chloride and fluoride ions, and possibly trace amounts of heavy metal ions. Efficient and stable treatment of such slurries, achieving full separation and recovery of solids and purification and reuse of water resources, is of great significance for reducing enterprise operating costs, alleviating the pressure of solid waste accumulation, conserving water resources, and meeting increasingly stringent environmental emission requirements.

[0003] Traditional single-stage sedimentation or simple filtration technologies often face many challenges when treating such complex slurries. They are inefficient at settling fine particles and colloidal substances, resulting in high turbidity in the effluent. They are also difficult to effectively separate soluble impurities that are wrapped or adsorbed on the surface of particles, and have limited ability to remove trace heavy metals. Utility Model Content

[0004] The purpose of this invention is to provide a three-stage sedimentation and filtration device for gypsum slurry to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts a three-stage sedimentation and filtration device for gypsum slurry, comprising a support plate, a support frame above the support plate, a primary filter box above the support frame, an inlet above the primary filter box, a secondary filter barrel connected to one side of the primary filter box via a first discharge pipe, a support base below the secondary filter barrel, a tertiary filter box connected to one side of the secondary filter barrel via a second discharge pipe, a discharge pipe on one side of the tertiary filter box, a vibrating plate assembly for preliminary filtration of the slurry inside the primary filter box, and a spiral feeding assembly below the vibrating plate assembly.

[0006] The vibrating plate assembly includes a filter plate, a material box, a motor compartment, and a vibrating motor. The filter plate is inclined with a higher top and a lower bottom and is set in a primary filter box. The material box is set at the lower end of the filter plate, and the motor compartment is set at the upper end of the filter plate. The vibrating motor is set in the motor compartment and can directly transmit vibration to the filter plate.

[0007] The spiral feeding assembly includes a carrier plate, a feeding motor, a feeding auger, and inclined plates. The carrier plate is located below the primary filter box, the feeding motor is located above the carrier plate, one end of the feeding auger is connected to the output end of the feeding motor, and the other end extends into the primary filter box. The inclined plates are symmetrically arranged on both sides of the feeding auger in a downward inclined shape, and the end of the feeding auger away from the feeding motor is close to the first discharge pipe.

[0008] Preferably, the secondary filter barrel is equipped with a screen barrel inside, a material transfer motor is installed below the secondary filter barrel, the output end of the material transfer motor extends into the secondary filter barrel and is directly connected to the bottom of the screen barrel, a barrel cover is installed on the top of the secondary filter barrel, and one end of the second discharge pipe is located on the outer periphery of the screen barrel.

[0009] Preferably, the three-stage filter box is equipped with multiple adsorption plates inside, and a sedimentation tank is set below the adsorption plates. One end of the discharge pipe passes through the three-stage filter box and is connected to the sedimentation tank.

[0010] Preferably, the interior of the material box is concave on both sides and convex in the middle, a design that can perfectly accommodate the setting of the feeding auger.

[0011] Preferably, the filter plate, screen barrel, and material container are all made of stainless steel.

[0012] Preferably, the surface of the spiral blades of the feeding auger is covered with a polytetrafluoroethylene wear-resistant layer, and the blade substrate is made of 304 stainless steel.

[0013] Preferably, the adsorption plate is an activated carbon plate.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0015] This invention utilizes the high-frequency vibration of an inclined filter plate in the primary filter box to effectively intercept coarse particles. These particles then flow by gravity into the feed box. The secondary filter box, aided by the rotational force of a rotating screen, traps larger particles, achieving enhanced separation of medium-sized particles. The slurry is then discharged through the second discharge pipe. The tertiary filter box performs adsorption and sedimentation, employing a combination of adsorption plates and a sedimentation tank to deeply trap colloidal particles and adsorb soluble impurities. This three-stage processing unit forms a progressive filtration system from coarse to fine, significantly improving the separation efficiency of particles of all sizes. This equipment fundamentally solves the shortcomings of traditional processes in handling complex slurries, achieving deep removal of pollutants and efficient resource recovery while ensuring continuous operation, resulting in significant economic and environmental benefits. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A three-dimensional diagram of a three-stage sedimentation and filtration device for gypsum slurry;

[0018] Figure 2 A side view of a three-stage sedimentation and filtration device for gypsum slurry;

[0019] Figure 3 This is a schematic diagram of the structure of the primary filter box;

[0020] Figure 4 A schematic diagram of the feeding motor and feeding auger;

[0021] Figure 5 This is a half-sectional view of the secondary filter cartridge;

[0022] Figure 6 This is a schematic diagram of the internal structure of a three-stage filter box;

[0023] Figure 7 This is a schematic diagram of the internal structure of the material carrier box.

[0024] In the above figures, 1. bearing plate, 2. support frame, 3. primary filter box, 4. feed inlet, 5. first discharge pipe, 6. support base, 7. secondary filter barrel, 8. second discharge pipe, 9. tertiary filter box, 10. discharge pipe, 11. filter plate, 12. material box, 13. motor compartment, 14. vibrating motor, 15. machine carrier plate, 16. feeding motor, 17. feeding auger, 18. inclined plate, 19. screen barrel, 20. material transfer motor, 21. barrel cover, 22. adsorption plate, 23. sedimentation tank. Detailed Implementation

[0025] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0027] Example 1, such as Figure 1-7As shown, the specific design of the key components mentioned above is described below: A three-stage sedimentation and filtration device for gypsum slurry includes a support plate 1, a support frame 2 above the support plate 1, a primary filter box 3 above the support frame 2, an inlet 4 above the primary filter box 3, a secondary filter tank 7 connected to one side of the primary filter box 3 via a first discharge pipe 5, a support base 6 below the secondary filter tank 7, a tertiary filter box 9 connected to one side of the secondary filter tank 7 via a second discharge pipe 8, a discharge pipe 10 on one side of the tertiary filter box 9, a vibrating plate assembly for preliminary filtration of the slurry inside the primary filter box 3, a spiral feeding assembly below the vibrating plate assembly, and the vibrating plate assembly including a filter plate 11, a material box 12, a motor chamber 13, and a vibrating motor 14. The filter plate 11 is inclined at the top and low at the bottom and is set inside the primary filter box 3. The material box 12 is set at the lower end of the filter plate 11. The motor chamber 13 is set at the upper end of the filter plate 11. The motor chamber 13 is equipped with a vibration motor 14, which can directly transmit vibration to the filter plate 11. The screw feeding assembly includes a carrier plate 15, a feeding motor 16, a feeding auger 17, and an inclined plate 18. The carrier plate 15 is set below the primary filter box 3, and the feeding motor 16 is set above the carrier plate 15. One end of the feeding auger 17 is connected to the output end of the feeding motor 16, and the other end extends into the primary filter box 3. The inclined plates 18 are symmetrically arranged on both sides of the feeding auger 17 with a downward inclination. The end of the feeding auger 17 away from the feeding motor 16 is close to the first discharge pipe 5.

[0028] This design significantly improves the processing efficiency of complex gypsum slurry through an integrated structure of three-stage synergistic filtration and directional conveying. The vibrating plate assembly utilizes the vibration of the inclined filter plate 11 to efficiently separate coarse particles and accelerate slurry flow. The material carrier box 12 receives impurities that cannot be filtered. The secondary filter tank 7 enhances the separation of medium particles through the centrifugal force of the rotating screen 19, screening larger particles inside the screen 19. The slurry passes through the second discharge pipe 8 into the tertiary filter box 9. The tertiary filter box 9, combined with the adsorption plate 22 and the sedimentation tank 23, deeply traps colloidal particles and adsorbs soluble salts and heavy metal ions. The spiral feeding assembly, in conjunction with the special structure of the material carrier box 12, achieves continuous anti-clogging conveying of coarse particles, ensuring long-term stable operation of the system. Ultimately, it achieves the dual goals of efficient recovery of solid substances and deep purification of water, significantly reducing operating costs and environmental risks. The slurry enters through the inlet... 4. The material enters the inclined filter plate 11. The vibration motor 14 drives the filter plate 11 to generate high-frequency micro-vibration. Coarse particles are vibrated and slide into the material box 12. The filtered slurry flows to the secondary unit by gravity. The slurry enters the rotating screen 19 in the secondary filter box. The transfer motor 20 drives the screen 19 to rotate at high speed. Medium particles are separated by centrifugal force and adhere to the screen. Fine particles overflow the slurry through the second discharge pipe 8 to the tertiary unit. The slurry in the tertiary filter box 9 flows through multiple adsorption plates 22 with an upper and lower stacked design. Colloidal particles and ionic pollutants are intercepted and adsorbed by the activated carbon plate. Ultrafine particles flocculate and settle in the sedimentation tank 23. The purified water is discharged from the upper discharge pipe 10. Coarse particles in the material box 12 are guided by the inclined plates 18 on both sides and collected to the feeding auger 17. The rotating auger pushes the material in a direction to the first discharge pipe 5, forming a closed-loop connection with the secondary filter box 7, realizing the continuous transfer of solid phase materials.

[0029] The secondary filter barrel 7 has a screen barrel 19 inside. A material transfer motor 20 is located below the secondary filter barrel 7. The output end of the material transfer motor 20 extends into the secondary filter barrel 7 and connects directly to the bottom of the screen barrel 19. A barrel cover 21 is located on the top of the secondary filter barrel 7. One end of the second discharge pipe 8 is located on the outer periphery of the screen barrel 19. The tertiary filter box 9 has multiple adsorption plates 22 inside. A sedimentation tank 23 is located below the adsorption plates 22. One end of the discharge pipe 10 passes through the tertiary filter box 9 and connects with the sedimentation tank 23. The material carrier box 12 has a concave shape on both sides and a convex shape in the middle. This design can be used to fit the setting of the feeding auger 17. The filter plates 11, screen barrel 19 and material carrier box 12 are all made of stainless steel. The surface of the spiral blades of the feeding auger 17 is covered with a polytetrafluoroethylene wear-resistant layer. The blade base is made of 304 stainless steel. The adsorption plates 22 are activated carbon plates.

[0030] This design uses a screen barrel 19 directly connected to a transfer motor 20 to form a rigid centrifugal drive structure, ensuring high-speed rotation stability and enhancing the separation efficiency of medium-sized particles. The design of the material container 12, with its concave sides and convex center, precisely matches the space of the feeding auger 17, avoiding interference with its operation. The stainless steel substrate and PTFE composite coating simultaneously address the wear and scaling issues of gypsum slurry. The activated carbon adsorption plate 22 is placed directly above the sedimentation tank 23 for further filtration before settling, adsorbing soluble pollutants and achieving integrated purification. The screen barrel 19 inside the secondary filter 7 is controlled by the transfer motor 20. The 0-direct-drive rotation causes the slurry to achieve solid-liquid separation under centrifugal force. Medium-sized particles are retained on the inner wall of the screen barrel 19, while the separated liquid overflows through the screen holes to the outer periphery and is guided to the tertiary filter box 9 by the second discharge pipe 8. The activated carbon adsorption plate 22 in the tertiary filter box 9 vertically intercepts the flowing slurry. Colloidal particles and ionic pollutants are physically adsorbed and chemically bonded. Ultrafine impurities naturally settle in the sedimentation tank 23 under gravity. The concave area of ​​the material box 12 collects the coarse particles that slide off the vibrating plate. The PTFE-coated auger blades push the material with low friction characteristics, and the material is transferred through the first discharge pipe 5.

[0031] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A three-stage sedimentation and filtration device for gypsum slurry, characterized in that, The system includes a support plate, a support frame on top of the support plate, a primary filter box on top of the support frame, an inlet on top of the primary filter box, a secondary filter barrel connected to one side of the primary filter box via a first discharge pipe, a support base below the secondary filter barrel, a tertiary filter box connected to one side of the secondary filter barrel via a second discharge pipe, a discharge pipe on one side of the tertiary filter box, a vibrating plate assembly for preliminary filtration of the slurry inside the primary filter box, and a screw feeding assembly below the vibrating plate assembly. The vibrating plate assembly includes a filter plate, a material box, a motor compartment, and a vibrating motor. The filter plate is inclined with a higher top and a lower bottom and is set in a primary filter box. The material box is set at the lower end of the filter plate, and the motor compartment is set at the upper end of the filter plate. The vibrating motor is set in the motor compartment and can directly transmit vibration to the filter plate. The spiral feeding assembly includes a carrier plate, a feeding motor, a feeding auger, and inclined plates. The carrier plate is located below the primary filter box, the feeding motor is located above the carrier plate, one end of the feeding auger is connected to the output end of the feeding motor, and the other end extends into the primary filter box. The inclined plates are symmetrically arranged on both sides of the feeding auger in a downward inclined shape, and the end of the feeding auger away from the feeding motor is close to the first discharge pipe.

2. The three-stage sedimentation and filtration equipment for gypsum slurry according to claim 1, characterized in that, The secondary filter barrel is equipped with a screen barrel inside. A material transfer motor is located below the secondary filter barrel. The output end of the material transfer motor extends into the secondary filter barrel and connects directly to the bottom of the screen barrel. A barrel cover is provided on the top of the secondary filter barrel. One end of the second discharge pipe is located on the outer periphery of the screen barrel.

3. The three-stage sedimentation and filtration equipment for gypsum slurry according to claim 2, characterized in that, The three-stage filter box is equipped with multiple adsorption plates inside, and a sedimentation tank is set below the adsorption plates. One end of the discharge pipe passes through the three-stage filter box and is connected to the sedimentation tank.

4. The three-stage sedimentation and filtration equipment for gypsum slurry according to claim 3, characterized in that, The interior of the material box is concave on both sides and convex in the middle, a design that perfectly fits the feeding auger.

5. The three-stage sedimentation and filtration equipment for gypsum slurry according to claim 4, characterized in that, The filter plate, sieve barrel, and material container are all made of stainless steel.

6. The three-stage sedimentation and filtration equipment for gypsum slurry according to claim 5, characterized in that, The surface of the spiral blades of the feeding auger is covered with a polytetrafluoroethylene wear-resistant layer, and the blade substrate is made of 304 stainless steel.

7. The three-stage sedimentation and filtration equipment for gypsum slurry according to claim 6, characterized in that, The adsorption plate is an activated carbon plate.

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