Solid-liquid separation device for slurry

Abstract

The utility model relates to a solid-liquid separation device for slurry, which belongs to the technical field of solid-liquid separation and comprises a support, a feeding mechanism, an extruding mechanism, a discharging mechanism, a liquid discharging mechanism, a first driving mechanism and a second driving mechanism. The feeding mechanism is connected to the upper portion of the extrusion mechanism, a feeding screw is arranged in the feeding mechanism and connected with the first driving mechanism, the extrusion mechanism is fixed to the support, an extrusion screw is arranged in the extrusion mechanism and connected with the second driving mechanism, and the other end of the extrusion screw is connected with the discharging mechanism. And the liquid discharging mechanism is arranged below the extruding mechanism. The screw rods arranged in the feeding mechanism and the extruding mechanism are respectively connected with the two driving mechanisms, the driving mechanisms are used for providing power for the feeding and extruding dehydration process of the slurry, and meanwhile, the extruding screw rods and the screens matched with the extruding screw rods are improved, so that the material separation efficiency and effect of the slurry are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of solid-liquid separation, in particular to a slurry solid-liquid separation device. Background Art

[0002] Solid-liquid separation of slurry refers to the process of separating solid particles suspended in liquid from liquid. In industrial production and environmental protection, solid-liquid separation of slurry is an important operation. Traditional slurry solid-liquid separation devices mainly separate solids from liquid through centrifugal force and other devices. These traditional devices have problems such as low separation efficiency, high energy consumption, and complex operation.

[0003] In the prior art, the slurry is often separated by setting up a spiral solid-liquid separation device. For example, the utility model patent with application number CN202021170355.2 proposes a solid-liquid separator, but it relies on continuous spiral feeding when performing solid-liquid separation operations, and its processing capacity is limited and its efficiency is low. Utility Model Content

[0004] In order to solve the problems of limited processing capacity and low efficiency of existing solid-liquid separation devices, the utility model provides a solid-liquid separation device for slurry.

[0005] The utility model provides a slurry solid-liquid separation device adopts the following technical solution:

[0006] A solid-liquid separation device for slurry comprises: a bracket, a feeding mechanism, an extrusion mechanism, a discharging mechanism, a drainage mechanism, a first driving mechanism and a second driving mechanism; the feeding mechanism is connected above the extrusion mechanism, a feeding screw is arranged in the feeding mechanism, the feeding screw is connected to the first driving mechanism, the extrusion mechanism is fixed on the bracket, an extrusion screw is arranged in the extrusion mechanism, the extrusion screw is connected to the second driving mechanism, and the other end is connected to the discharging mechanism, and the drainage mechanism is arranged below the extrusion mechanism.

[0007] Preferably, the feeding mechanism also includes a feeding barrel and a feeding port, the feeding barrel is a conical barrel with an opening facing upward, the feeding port is arranged on one side of the conical barrel, the feeding screw is arranged inside the feeding barrel, and the spiral blades of the feeding screw are parallel to the inner wall of the conical barrel.

[0008] Preferably, the extrusion mechanism further comprises a storage barrel and a screen, wherein the screen is arranged inside the storage barrel, and the extrusion screw is arranged inside the screen.

[0009] Preferably, the extrusion screw is divided into a filling section, an extrusion section and a friction section along the conveying direction, the spiral blades of the filling section are continuous spiral blades, and the spiral blades of the extrusion section are intermittent spiral blades.

[0010] Preferably, the extrusion section is a variable diameter screw, the rod body increases along the conveying direction, and the pitch decreases along the conveying direction.

[0011] Preferably, the screen bars of the screen are in the shape of right-angle trapezoids, and the gaps between adjacent screen bars are in the shape of single-sided inclinations.

[0012] Preferably, the screen is also provided with material blocking teeth cooperating with the extrusion screw.

[0013] Preferably, the discharging mechanism includes a conical baffle, a hydraulic cylinder, and a moving rod. The hydraulic cylinder is arranged at the top of the extrusion mechanism and connected to the moving rod. The other end of the moving rod is connected to the conical baffle to cooperate with the hydraulic cylinder to push the conical baffle to move.

[0014] Preferably, the drainage mechanism comprises a drainage cavity and a drainage port, the drainage cavity is a funnel-shaped structure, and is arranged at the lower end of the extrusion mechanism, and the drainage port is arranged at the lowest point of the drainage cavity.

[0015] In summary, the utility model has the following beneficial technical effects:

[0016] 1. The screws arranged in the feeding mechanism and the extrusion mechanism are respectively connected to the two driving mechanisms, and the driving structures provide power for the feeding and extrusion dehydration process of the slurry, thereby improving the material separation efficiency of the slurry;

[0017] 2. The extrusion screw is divided into a filling section, an extrusion section and a friction section, and the screen is set to a right-angle trapezoidal screen bar and a single-sided inclined gap to prevent material accumulation, so that the device can adapt to different types of slurry separation requirements, which is conducive to better extrusion and processing of slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a slurry solid-liquid separation device shown in an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the screw push rod shown in the embodiment of the utility model;

[0020] Figure 3 It is a schematic diagram of the screen structure shown in an embodiment of the utility model;

[0021] Figure 4 It is a schematic diagram of the filter pressing area shown in an embodiment of the utility model.

[0022] Explanation of the reference numerals in the accompanying drawings: 1. bracket; 2. feeding mechanism; 3. extrusion mechanism; 4. discharging mechanism; 5. drainage mechanism; 6. first driving mechanism; 7. second driving mechanism; 8. feeding barrel; 9. feeding port; 10. feeding screw; 11. storage barrel; 12. screen; 13. screen bars; 14. filter pressing area; 15. material blocking teeth; 16. extrusion screw; 17. filling section; 18. extrusion section; 19. friction section; 20. conical baffle; 21. hydraulic cylinder; 22. moving rod; 23. drainage chamber; 24. drainage port. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-4 The utility model is described in further detail.

[0024] The utility model discloses a slurry solid-liquid separation device, such as Figure 1 As shown, a solid-liquid separation device for slurry comprises: a bracket 1, a feeding mechanism 2, an extrusion mechanism 3, a discharging mechanism 4, a drainage mechanism 5, a first driving mechanism 6 and a second driving mechanism 7; the feeding mechanism 2 is connected above the extrusion mechanism 3, a feeding screw 10 is arranged in the feeding mechanism 2, the feeding screw 10 is connected to the first driving mechanism 6, the extrusion mechanism 3 is fixed on the bracket 1, an extrusion screw 16 is arranged in the extrusion mechanism 3, the extrusion screw 16 is connected to the second driving mechanism 7, and the other end is connected to the discharging mechanism 4, and the drainage mechanism 5 is arranged below the extrusion mechanism 3.

[0025] The feeding mechanism 2 also includes a feeding barrel 8 and a feeding port 9. The feeding barrel 8 is a conical barrel with an opening facing upward. The feeding port 9 is arranged on one side of the conical barrel. The feeding screw 10 is arranged inside the feeding barrel 8 and is connected to the first driving mechanism 6. The spiral blades of the feeding screw 10 are parallel to the inner wall of the conical barrel. After the slurry enters the feeding barrel 8, it flows into the extrusion mechanism 3 under the action of gravity. The first driving mechanism 6 is connected to the feeding screw 10 to control the rotation of the feeding screw 10, and the material is pushed from the feeding port 9 to the spiral cavity of the extrusion screw 16, thereby strengthening the propulsion effect of the slurry and realizing the feeding of the slurry under the dual action of gravity and thrust. At the same time, the spiral blades of the feeding screw 10 are parallel to the inner wall of the conical barrel to ensure that the material can flow smoothly during the feeding process.

[0026] The extrusion mechanism 3 further includes a storage barrel 11 and a screen 12 . The screen 12 is arranged inside the storage barrel 11 . An extrusion screw 16 is arranged inside the screen 12 . The extrusion screw 16 is connected to the second driving mechanism 7 and rotates under the control of the second driving mechanism 7 .

[0027] like Figure 2As shown, the extrusion screw 16 is divided into a filling section 17, an extrusion section 18 and a friction section 19 along the conveying direction. The spiral blades of the filling section 17 are continuous spiral blades, and the spiral blades of the extrusion section 18 are intermittent spiral blades. The extrusion section 18 is a variable diameter screw, the rod body increases along the conveying direction, and the pitch decreases along the conveying direction. The conveying direction is the direction from the feeding mechanism 2 to the discharging mechanism 4.

[0028] The filling section 17 adopts continuous spiral blades, which can provide uniform pushing force, so that the material can flow smoothly during the feeding process, which is conducive to the continuous feeding and filling of the material. At the same time, a larger pitch is set to allow the material to accumulate quickly; the extrusion section 18 adopts intermittent spiral blades, which can cause the material to deform and compress during the extrusion process, provide greater extrusion force and shear force, and achieve the purpose of extrusion processing. The pitch of the extrusion section 18 gradually decreases and the shaft diameter increases, so that the space in the extrusion chamber is gradually reduced, which helps to gradually increase the compression and extrusion force of the material during the extrusion process and achieve a better extrusion effect; the friction section 19 is the end part of the extrusion screw 16, without spiral blades, providing additional friction and sealing effect.

[0029] like Figure 3 As shown, the screen bars 13 of the screen 12 are right-angled trapezoids, and the gaps between adjacent screen bars 13 are single-sided inclined; the screen bar structure of the traditional screen is triangular or rectangular, and the gaps between them are isosceles triangles, which are prone to blockage and material slippage when processing materials. The right-angled trapezoidal screen bars 13 are arranged, such as Figure 4 As shown, a filter pressing area 14 is formed between the screen bars 13, and the material is subjected to an extrusion force when the screw rotates. At the same time, the gaps between adjacent screen bars 13 are single-sided inclined, and the inclination is greater than that of the existing screen bar structure. The sharp corners of the original triangular screen bars are retained, and the surface tension of water adsorbed on the surface of the object is effectively destroyed, so that the dehydration process can proceed faster and prevent the material from slipping and accumulating in the gap.

[0030] The screen 12 is also provided with material blocking teeth 15 that cooperate with the extrusion screw 16 to prevent the material from flowing back during the extrusion process, ensure that the material always flows forward during the extrusion process, and increase the friction and shear force of the material between the extrusion screw 16 and the screen 12, which is conducive to better extrusion and processing of the material.

[0031] The discharging mechanism 4 includes a conical baffle 20, a hydraulic cylinder 21, and a moving rod 22. The hydraulic cylinder 21 is arranged at the top of the extrusion mechanism 3 and is connected to the moving rod 22. The other end of the moving rod 22 is connected to the conical baffle 20 to cooperate with the hydraulic cylinder 21 to push the conical baffle 20 to move; the extrusion screw 16 passes through the middle of the conical baffle 20 and is fixed to the two ends of the storage barrel 11 through flanges and connecting rods.

[0032] The conical baffle 20 is located at the outlet of the extrusion mechanism 3 and is used to control the connection between the cavity of the extrusion screw 16 and the external environment. The conical baffle 20 provides better airtightness when closed. When discharging, the material is discharged along the conical surface, which alleviates the accumulation of the material and avoids the occurrence of blockage. When the hydraulic cylinder 21 applies hydraulic pressure, the hydraulic pressure is transmitted to the moving rod 22, and the moving rod 22 cooperates with the conical baffle 20 to change the position of the conical baffle 20, thereby adjusting the discharge speed and pressure of the extruded product.

[0033] Before the equipment starts working, the discharging mechanism 4 needs to be in a closed state to prevent the material with high moisture content from flowing out. After running for a period of time, it is slowly opened. When the solid material is extruded evenly, it can be adjusted within a certain range to achieve the purpose of adjusting the moisture content of the extrudate.

[0034] The drainage mechanism 5 includes a drainage chamber 23 and a drainage port 24. The drainage chamber 23 is a funnel-shaped structure and is arranged at the lower end of the extrusion mechanism 3. The drainage port 24 is arranged at the lowest point of the drainage chamber 23. The filtrate can be quickly collected through the funnel-shaped structure, thereby effectively improving the efficiency of filtrate discharge.

[0035] The implementation principle of a solid-liquid separation device for slurry in an embodiment of the utility model is as follows: the slurry enters the feeding mechanism from the feeding port, the first driving mechanism drives the feeding screw to rotate to assist the slurry to enter the extrusion mechanism, the second driving mechanism drives the extrusion screw to rotate, and the slurry moves in the axial direction under the push of the extrusion screw. As the pitch and the shaft diameter gradually change, the slurry is gradually pressurized under the push of the extrusion screw to achieve extrusion deliquidation, the solid matter after extrusion is discharged through the discharging mechanism, and the liquid is discharged through the liquid discharge mechanism, thereby completing the solid-liquid separation operation of the slurry.

[0036] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A slurry solid-liquid separation device, characterized in that: include: A support (1), a feeding mechanism (2), an extrusion mechanism (3), a discharging mechanism (4), a liquid discharge mechanism (5), a first driving mechanism (6) and a second driving mechanism (7); the feeding mechanism (2) is connected above the extrusion mechanism (3); a feeding screw (10) is arranged in the feeding mechanism (2); the feeding screw (10) is connected to the first driving mechanism (6); the extrusion mechanism (3) is fixed on the support (1); an extrusion screw (16) is arranged in the extrusion mechanism (3); the extrusion screw (16) is connected to the second driving mechanism (7) and the other end is connected to the discharging mechanism (4); the liquid discharge mechanism (5) is arranged below the extrusion mechanism (3); The extrusion screw (16) is divided into a filling section (17), an extrusion section (18) and a friction section (19) along the conveying direction; the spiral blades of the filling section (17) are continuous spiral blades, and the spiral blades of the extrusion section (18) are discontinuous spiral blades.

2. The solid-liquid separation device for slurry according to claim 1, characterized in that: The feeding mechanism (2) also includes a feeding barrel (8) and a feeding port (9); the feeding barrel (8) is a conical barrel with an opening facing upward; the feeding port (9) is arranged on one side of the feeding barrel (8); the feeding screw (10) is arranged inside the feeding barrel (8); and the spiral blades of the feeding screw (10) are parallel to the inner wall of the feeding barrel (8).

3. The solid-liquid separation device for slurry according to claim 1, characterized in that: The extrusion mechanism (3) further comprises a material storage barrel (11) and a screen (12); the screen (12) is arranged inside the material storage barrel (11); and the extrusion screw (16) is arranged inside the screen (12).

4. The solid-liquid separation device for slurry according to claim 1, characterized in that: The extrusion section (18) is a variable diameter screw, the rod body increases along the conveying direction, and the pitch decreases along the conveying direction.

5. The solid-liquid separation device for slurry according to claim 3, characterized in that: The screen bars (13) of the screen mesh (12) are in the shape of a right-angled trapezoid, and the gaps between adjacent screen bars (13) are in a single-sided inclined shape.

6. The solid-liquid separation device for slurry according to claim 3, characterized in that: The screen (12) is also provided with material blocking teeth (15) that match the extrusion screw (16).

7. The solid-liquid separation device for slurry according to claim 1, characterized in that: The discharging mechanism (4) comprises a conical baffle (20), a hydraulic cylinder (21), and a moving rod (22); the hydraulic cylinder (21) is arranged at the top end of the extrusion mechanism (3) and is connected to the moving rod (22); the other end of the moving rod (22) is connected to the conical baffle (20) and cooperates with the hydraulic cylinder (21) to push the conical baffle (20) to move.

8. The solid-liquid separation device for slurry according to claim 1, characterized in that: The drainage mechanism (5) comprises a drainage cavity (23) and a drainage port (24); the drainage cavity (23) is a funnel-shaped structure and is arranged at the lower end of the extrusion mechanism (3); and the drainage port (24) is arranged at the lowest point of the drainage cavity (23).

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