A decanter centrifuge

Abstract

The utility model discloses a kind of subsidence type centrifugal dehydrator, including subsidence type centrifuge and secondary pressure filter mechanism, the secondary pressure filter mechanism includes temporary storage pipe, and temporary storage pipe and the fixed intercommunication of subsidence type centrifuge's slag outlet, the bottom of temporary storage pipe is fixed intercommunication with casing body. In the utility model, by setting the secondary pressure filter mechanism intercommunication with the subsidence type centrifuge slag outlet, two-stage efficient dewatering of material is realized: the subsidence type centrifuge first carries out preliminary solid-liquid separation to material, and then discharged slag enters temporary storage pipe and falls into casing body, and by extruding oil cylinder drives L-shaped pressing seat to cooperate filter plate to carry out secondary squeezing dehydration to slag, and the collaborative design of pressure measuring oil cylinder and telescopic pipe can monitor and adjust filter-pressing pressure in real time, to ensure that dewatering effect is stable. The structure effectively solves the problem that traditional centrifugal dehydrator is not complete for high viscosity or fine particle material dewatering, significantly reduces the final moisture content of waste residue.

Description

Technical Field

[0001] This utility model relates to the field of sedimentation centrifuge technology, and in particular to a sedimentation centrifuge dewatering machine. Background Technology

[0002] A sedimentation centrifuge is a device that uses centrifugal force to separate solids and liquids, primarily used for dehydration. Its working principle is based on centrifugal force; a high-speed rotating drum causes solid particles in a solid-liquid mixture to settle onto the inner wall of the drum under centrifugal force, while the liquid is discharged through an overflow port. There is a speed difference between the drum and the screw conveyor; the screw pushes the settled solids towards the discharge port.

[0003] However, in practical applications, existing sedimentation centrifuges have revealed significant limitations when processing high-viscosity or fine-particle materials. On the one hand, high-viscosity materials have poor flowability, and under centrifugal force, the internal moisture is difficult to be fully separated; fine-particle materials, due to their small particle size and large specific surface area, adsorb a large amount of water on their surface, and centrifugal force alone cannot achieve complete dehydration, resulting in a high final moisture content in the discharged waste residue, which cannot meet the requirements for subsequent processing or use.

[0004] Therefore, a sedimentation centrifugal dehydrator is proposed. Utility Model Content

[0005] This utility model is a sedimentation centrifugal dehydrator proposed to overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a sedimentation centrifugal dewatering machine, comprising a sedimentation centrifuge and a secondary filter press mechanism, wherein the secondary filter press mechanism includes a temporary storage tube, and the temporary storage tube is fixedly connected to the slag discharge port of the sedimentation centrifuge. The bottom of the temporary storage tube is fixedly connected to a shell, and the inner walls on both sides of the shell are fixedly connected to a fixing plate. A pressing cylinder is fixedly connected to one side of the outer surface of the fixing plate. The movable end of the pressing cylinder passes through the fixing plate and is fixedly connected to an L-shaped pressure seat, and the L-shaped pressure seat is sealed and fitted to the inner wall of the shell.

[0007] The interior of the housing is sealed and slides a filter plate, and an assembly cover is fixedly connected to one side of the outer surface of the filter plate;

[0008] A support frame is fixedly connected to one end of the housing, and a pressure measuring cylinder is installed on the support frame and connected to the assembly cover.

[0009] A telescopic tube is installed between the support frame and the assembly cover;

[0010] A waste discharge pipe is fixedly connected to the bottom of the shell.

[0011] Furthermore, the bottom of the sedimentation centrifuge is fixedly connected with multiple long support legs, and the bottom of the shell is fixedly connected with four short support legs. This design ensures that the sedimentation centrifuge has sufficient installation height through the long support legs, which facilitates the connection between the slag discharge port and the temporary storage pipe.

[0012] Furthermore, two first guide rods are symmetrically fixedly connected to one side of the outer surface of the L-shaped pressure seat, and the first guide rods are set through the fixed plate and slidably connected to the fixed plate. The symmetrical arrangement of the first guide rods ensures the straightness and stability of the L-shaped pressure seat during movement and avoids skewing or jamming caused by uneven force on one side.

[0013] Furthermore, the filter plate includes a perforated plate, which is sealed and fitted to the inner wall of the housing and is detachably fixed to the assembly cover. The filter cloth is fixedly connected to the perforated plate on one side of the L-shaped pressure seat, and the sealed fit between the perforated plate and the housing prevents leakage of the filtrate.

[0014] Furthermore, the pressure measuring cylinder includes an auxiliary cylinder, which is fixedly connected to the support frame. The movable end of the auxiliary cylinder passes through the support frame and is fixedly connected to a mounting base. A pressure sensor is fixedly embedded on one side of the outer surface of the mounting base. The detection end of the pressure sensor is fixedly connected to a connecting plate, and the connecting plate is fixedly connected to the assembly cover. The integrated design of the pressure sensor enables real-time monitoring of the filter pressure.

[0015] Furthermore, two second guide rods are symmetrically fixedly connected to one side of the outer surface of the assembly cover, and the second guide rods pass through the support frame and are slidably connected to the support frame. The symmetrical arrangement of the second guide rods ensures the stability and centering of the filter plate during movement.

[0016] Furthermore, the telescopic tube includes a bend, which is fixedly installed at the bottom of the assembly cover and communicates with the assembly cover. The outer surface of the bend is sealed with a sleeve, which passes through the support frame and is fixedly connected to the support frame. The sealing and sliding structure of the telescopic tube allows the filter plate to effectively discharge filtrate during movement.

[0017] The beneficial effects of this utility model are:

[0018] In use, this utility model, a sedimentation centrifugal dewatering machine, achieves two-stage high-efficiency dewatering of materials by setting up a secondary pressure filtration mechanism that communicates with the slag discharge port of the sedimentation centrifuge: the sedimentation centrifuge first performs preliminary solid-liquid separation of the material, and then the discharged slag enters the temporary storage pipe and falls into the shell. A hydraulic cylinder drives an L-shaped pressure seat in conjunction with a filter plate to perform secondary pressing and dewatering of the slag. Simultaneously, the coordinated design of the pressure measuring cylinder and the telescopic pipe allows for real-time monitoring and adjustment of the pressure filtration, ensuring stable dewatering results. This structure effectively solves the problem of incomplete dewatering of high-viscosity or fine-particle materials in traditional centrifugal dewatering machines, significantly reducing the final moisture content of the waste residue, while avoiding pressure runaway or liquid backflow during the pressure filtration process, thus improving dewatering efficiency and equipment reliability. Attached Figure Description

[0019] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 Side view of this utility model;

[0021] Figure 2 Top view of the secondary pressure filter mechanism of this utility model;

[0022] Figure 3 : A cross-sectional three-dimensional first-view structural diagram of the secondary pressure filtration mechanism of this utility model;

[0023] Figure 4 : Cross-sectional three-dimensional structural diagram of the secondary pressure filtration mechanism of this utility model.

[0024] The attached figures are labeled as follows:

[0025] 1. Sedimentation centrifuge; 2. Shell; 3. Short support leg; 4. Long support leg; 5. L-shaped pressure seat; 6. Temporary storage tube; 7. Pressure sensor; 8. Second guide rod; 9. Auxiliary cylinder; 10. Sleeve; 11. Compression cylinder; 12. Orifice plate; 13. Waste discharge pipe; 14. Bend; 15. Assembly cover; 16. Connecting plate; 17. Mounting base; 18. First guide rod; 19. Fixing plate; 20. Filter cloth; 21. Support frame. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figures 1 to 4 As shown, a sedimentation centrifugal dewatering machine is disclosed, comprising a sedimentation centrifuge 1 and a secondary filter press mechanism. The secondary filter press mechanism includes a temporary storage tube 6, which is fixedly connected to the slag discharge port of the sedimentation centrifuge 1. A housing 2 is fixedly connected to the bottom of the temporary storage tube 6. A fixing plate 19 is fixedly connected to the inner walls of both sides of the housing 2. A pressing cylinder 11 is fixedly connected to one side of the outer surface of the fixing plate 19. The movable end of the pressing cylinder 11 passes through the fixing plate 19 and is fixedly connected to an L-shaped pressure seat 5. The L-shaped pressure seat 5 is sealed and fitted to the inner wall of the housing 2. Two first guide rods 18 are symmetrically fixedly connected to one side of the outer surface of the L-shaped pressure seat 5. The first guide rods 18 pass through the fixing plate 19 and are slidably connected to the fixing plate 19. Sealing gaskets are fixedly connected to the top, sides and bottom of the L-shaped pressure seat 5, and a sealing connection with the housing 2 can be achieved through the sealing gaskets.

[0028] The interior of the housing 2 is sealed with a filter plate that slides. An assembly cover 15 is fixedly connected to one side of the outer surface of the filter plate. The filter plate includes a perforated plate 12, which is sealed and fitted to the inner wall of the housing 2 and is detachably fixed to the assembly cover 15. A filter cloth 20 is fixedly connected to one side of the L-shaped pressure seat 5. The perforated plate 12 and the assembly cover 15 are fixed by multiple bolts, which facilitates the disassembly, maintenance or replacement of the filter plate. A U-shaped sealing gasket is pressed between the perforated plate 12 and the assembly cover 15. The U-shaped sealing gasket is located inside the U-shape formed by multiple bolts to ensure the sealing between the perforated plate 12 and the assembly cover 15. Two sealing rings are fixedly sleeved on the outer surface of the perforated plate 12 to achieve sealing with the housing 2.

[0029] One end of the housing 2 is fixedly connected to a support frame 21. The support frame 21 is equipped with a pressure measuring cylinder, which is connected to the assembly cover 15. The pressure measuring cylinder includes an auxiliary cylinder 9, which is fixedly connected to the support frame 21. The movable end of the auxiliary cylinder 9 passes through the support frame 21 and is fixedly connected to a mounting base 17. A pressure sensor 7 is fixedly embedded on one side of the outer surface of the mounting base 17. The detection end of the pressure sensor 7 is fixedly connected to a connecting plate 16, which is fixedly connected to the assembly cover 15. Two second guide rods 8 are symmetrically fixedly connected on one side of the outer surface of the assembly cover 15. The second guide rods 8 pass through the support frame 21 and are slidably connected to the support frame 21. The pressure sensor 7 is mainly used for force measurement, and its model can be selected by reference to ZCB511E-W.

[0030] A telescopic tube is installed between the support frame 21 and the assembly cover 15. The telescopic tube includes a bend 14, which is fixedly installed at the bottom of the assembly cover 15 and communicates with the assembly cover 15. A sleeve 10 is slidably sealed on the outer surface of the bend 14. The sleeve 10 passes through the support frame 21 and is fixedly connected to the support frame 21. A sealing ring is fixedly fitted on the outer surface of the bend 14, and the sealing ring is sealed and fitted to the inner wall of the sleeve 10.

[0031] Waste discharge pipe 13 is fixedly connected to the bottom of the shell 2.

[0032] The bottom of the sedimentation centrifuge 1 is fixedly connected with multiple long support legs 4, and the bottom of the shell 2 is fixedly connected with four short support legs 3, which are used to raise the overall height and facilitate overall installation.

[0033] The controller used in the sedimentation centrifuge 1 is electrically connected to the pressure sensor 7, the compression cylinder 11, and the auxiliary cylinder 9 to facilitate overall control. The specific data analysis and processing involved to further realize the control function are methods that can be implemented by those skilled in the art based on common knowledge. These methods are not within the scope of this solution. The above description is only to illustrate the beneficial effects that can be achieved by this hardware structure improvement in conjunction with common knowledge.

[0034] Working principle: Material enters the drum of the sedimentation centrifuge 1. Under the centrifugal force generated by high-speed rotation, the denser solid particles are thrown against the inner wall of the drum to form waste residue, while the liquid phase is discharged through the overflow port of the drum. The screw conveyor at the end of the drum pushes the partially dehydrated waste residue towards the slag discharge port. The waste residue enters the temporary storage pipe 6 through the slag discharge port and falls into the shell 2 below by gravity.

[0035] After a period of time, the hydraulic cylinder 11 drives the L-shaped pressure seat 5 towards the filter plate. Under mechanical compression, the water in the waste residue passes through the micropores of the filter cloth 20 and the perforated plate 12 and is discharged, while the solids are retained. At this time, the L-shaped pressure seat 5 temporarily seals the temporary storage tube 6.

[0036] The squeezed water enters the assembly cover 15 through the perforated plate 12 and is discharged through the telescopic pipe composed of the bend 14 and the sleeve 10.

[0037] Pressure sensor 7 monitors changes in extrusion pressure. When the pressure reaches a set threshold, it determines that dehydration is complete and stops extrusion.

[0038] After extrusion, the auxiliary cylinder 9 retracts, causing the filter plate to move backward. At the same time, the extrusion cylinder 11 continues to push the waste residue through the L-shaped pressure seat 5. When the waste residue moves to the waste discharge pipe 13, the extrusion cylinder 11 stops running, and the auxiliary cylinder 9 continues to retract, allowing the dewatered waste residue to be discharged from the waste discharge pipe 13. If necessary, the auxiliary cylinder 9 can drive the filter plate to move back and forth to help the waste residue detach and be discharged.

[0039] After completion, all components are reset.

[0040] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A sedimentation centrifugal dewatering machine, comprising a sedimentation centrifuge (1) and a secondary filter press mechanism, characterized in that: The secondary filter press mechanism includes a temporary storage tube (6), and the temporary storage tube (6) is fixedly connected to the slag discharge port of the sedimentation centrifuge (1). The bottom of the temporary storage tube (6) is fixedly connected to a shell (2). The inner walls on both sides of the shell (2) are fixedly connected to a fixing plate (19). A pressing cylinder (11) is fixedly connected to one side of the outer surface of the fixing plate (19). The movable end of the pressing cylinder (11) passes through the fixing plate (19) and is fixedly connected to an L-shaped pressure seat (5). The L-shaped pressure seat (5) is sealed and fitted to the inner wall of the shell (2). The housing (2) has a filter plate that slides inside and is sealed, and an assembly cover (15) is fixedly connected to one side of the outer surface of the filter plate; One end of the housing (2) is fixedly connected to a support frame (21), and the support frame (21) is equipped with a pressure measuring cylinder, which is connected to the assembly cover (15). A telescopic tube is installed between the support frame (21) and the assembly cover (15); The bottom of the housing (2) is fixedly connected to a waste discharge pipe (13).

2. The sedimentation centrifugal dewatering machine according to claim 1, characterized in that: The bottom of the sedimentation centrifuge (1) is fixedly connected with multiple long support legs (4), and the bottom of the shell (2) is fixedly connected with four short support legs (3).

3. A sedimentation centrifugal dewatering machine according to claim 1, characterized in that: Two first guide rods (18) are symmetrically fixedly connected to one side of the outer surface of the L-shaped pressure seat (5), and the first guide rods (18) pass through the fixing plate (19) and are slidably connected to the fixing plate (19).

4. A sedimentation centrifugal dewatering machine according to claim 1, characterized in that: The filter plate includes a perforated plate (12), and the perforated plate (12) is sealed and fitted to the inner wall of the housing (2) and is detachably fixed to the assembly cover (15). The perforated plate (12) is fixedly connected to the filter cloth (20) on one side of the L-shaped pressure seat (5).

5. A sedimentation centrifugal dewatering machine according to claim 1, characterized in that: The pressure measuring cylinder includes an auxiliary cylinder (9), and the auxiliary cylinder (9) is fixedly connected to the support frame (21). The movable end of the auxiliary cylinder (9) passes through the support frame (21) and is fixedly connected to a mounting base (17). A pressure sensor (7) is fixedly embedded on one side of the outer surface of the mounting base (17). The detection end of the pressure sensor (7) is fixedly connected to a connecting plate (16), and the connecting plate (16) is fixedly connected to the assembly cover (15).

6. A sedimentation centrifugal dewatering machine according to claim 5, characterized in that: Two second guide rods (8) are symmetrically fixedly connected to one side of the outer surface of the assembly cover (15), and the second guide rods (8) are set through the support frame (21) and are slidably connected to the support frame (21).

7. A sedimentation centrifugal dewatering machine according to claim 1, characterized in that: The telescopic tube includes a bend (14), and the bend (14) is fixedly installed at the bottom of the assembly cover (15) and communicates with the assembly cover (15). The outer surface of the bend (14) is sealed with a sleeve (10), and the sleeve (10) passes through the support frame (21) and is fixedly connected to the support frame (21).

Images