A water leakage prevention mechanism of a horizontal screw discharge centrifuge

Abstract

This utility model discloses a water-proof mechanism for a horizontal screw discharge centrifuge, including a frame and a centrifuge body mounted on the frame. The bottom of the centrifuge body has a liquid discharge port and a slag discharge port. A liquid discharge assembly is installed below the liquid discharge port, comprising a liquid discharge hopper and a sealing element. A sealing block is installed inside the liquid discharge hopper. The centrifuge body discharges slag and liquid through the slag discharge port and the liquid discharge port, respectively. When liquid discharge is required, the sealing channel is separated from the sealing block, allowing the liquid to be discharged through the liquid discharge hopper and the outlet channel. When the centrifuge is not in use, the sealing channel is sealed with the sealing block to prevent residual liquid inside the centrifuge from leaking out and causing environmental pollution. When the sealing block is connected to the sealing channel, a second sealing element and a second sealing groove further enhance the sealing performance of the sealing block, preventing leakage.

Description

Technical Field

[0001] This utility model relates to the field of horizontal screw centrifuge technology, and in particular to a water-proof mechanism for a horizontal screw unloading centrifuge. Background Technology

[0002] A horizontal screw centrifuge, also known simply as a decanter centrifuge, is a highly efficient solid-liquid separation device. It utilizes centrifugal force generated by high-speed rotation to rapidly separate solids from liquids in a mixture. Its core components are a horizontally mounted screw conveyor and a rotating drum. During operation, material enters the drum through the feed pipe. At a speed of several thousand revolutions per minute, denser solid particles are deposited on the inner wall of the drum under centrifugal force. The screw conveyor then slowly pushes the solid residue towards the discharge port at the conical end of the drum, where it is discharged. The less dense liquid phase forms an inner clear liquid ring, flowing along the screw blades to overflow and separate at the discharge port at the column end of the drum. This continuous separation process is particularly suitable for sludge dewatering and chemical suspension treatment. The separation effect can be precisely controlled by adjusting the drum speed and differential speed ratio, offering advantages such as large processing capacity and high automation.

[0003] Patent document CN1326624C discloses a horizontal screw centrifuge, including a rotating drum and a screw conveyor located inside the drum cavity. The screw conveyor includes a screw conveyor shaft, a screw conveyor cylinder connected to the screw conveyor shaft, and screw conveyor blades disposed on the screw conveyor cylinder. A separation chamber is formed between the outer wall of the screw conveyor cylinder and the inner wall of the rotating drum. The screw conveyor shaft has an inlet channel and an outlet channel at both ends, which are sequentially connected. The separation chamber is also connected to a sludge discharge channel. The suspension enters the separation chamber through the inlet channel; after solid-liquid separation, the clear liquid flows directly out from the outlet channel, reducing energy loss.

[0004] In the prior art of the aforementioned patent, the device discharges directly through the discharge channel during the drainage process and receives the discharged water through a container. However, there is no corresponding valve facility inside the discharge channel, which means that when the horizontal screw centrifuge is not in use, the liquid that was previously inside the machine body can easily leak out from the discharge channel, causing dirt to the surrounding environment of the device. Utility Model Content

[0005] Purpose of the utility model: The purpose of this utility model is to provide a water-proof mechanism for a horizontal screw discharge centrifuge to solve the above-mentioned shortcomings in the prior art.

[0006] Technical Solution: A water-proof mechanism for a horizontal screw discharge centrifuge includes a frame and a centrifuge body mounted on the frame. The bottom of the centrifuge body has a liquid discharge port and a slag discharge port. A liquid discharge assembly is installed below the liquid discharge port. The liquid discharge assembly includes a liquid discharge hopper and a sealing element. A sealing block is installed inside the liquid discharge hopper. The sealing element has a sealing channel and a liquid outlet channel inside. The sealing channel and the liquid outlet channel are coaxially arranged and interconnected, respectively penetrating the top and bottom ends of the sealing element. The sealing channel and the sealing block are mutually sealing and compatible.

[0007] As a further description of the above technical solution: a first sealing element is fixedly installed at the top of the drain hopper, a first sealing groove is opened at the edge of the drain port, the first sealing element is sealed and adapted to the first sealing groove, and multiple fixing elements are fixedly installed around the drain hopper, and bolts are threadedly connected between the multiple fixing elements and the horizontal screw centrifuge body.

[0008] As a further description of the above technical solution: the drain hopper is divided into a conical section and a vertical section, and an installation component is fixedly installed on the vertical section of the drain hopper, and the installation component is fixedly connected to the sealing block.

[0009] As a further description of the above technical solution: the sealing member has an annular groove inside, and the inner sidewall of the annular groove near the outer side has a threaded part, and the sealing member is threadedly connected to the vertical section through the threaded part.

[0010] As a further description of the above technical solution: the diameter of the liquid outlet channel is larger than that of the sealing channel.

[0011] As a further description of the above technical solution: the top end of the sealing member is provided with a second sealing groove, the second sealing groove is opened between the sealing channel and the threaded part, and a second sealing element is fixedly sleeved on the sealing block, the second sealing element is sealed and adapted to the second sealing groove.

[0012] As a further description of the above technical solution: a filter screen is provided inside the conical section of the drain hopper.

[0013] As a further description of the above technical solution: the inner sidewall of the annular groove near the inner side is provided with a moisture-absorbing cotton layer.

[0014] Beneficial effects: The horizontal screw centrifuge body discharges slag and liquid through the slag discharge port and liquid discharge port respectively. When liquid discharge is required, the sealing channel is separated from the sealing block, allowing the liquid to be discharged through the liquid discharge hopper and liquid outlet channel. When the centrifuge is not in use, the sealing channel needs to be sealed with the sealing block to prevent residual liquid inside the machine from leaking out and causing environmental pollution. When the sealing block is connected to the sealing channel, the second seal and the second sealing groove can further increase the sealing performance of the sealing block and prevent leakage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the anti-leakage mechanism for a horizontal screw unloading centrifuge proposed in this utility model;

[0016] Figure 2 This is a three-dimensional structural schematic diagram from another perspective of the present invention;

[0017] Figure 3 This is a three-dimensional structural diagram of the drain assembly and the disassembled horizontal screw centrifuge body of this utility model;

[0018] Figure 4 This is a three-dimensional structural schematic diagram of the drainage component of this utility model;

[0019] Figure 5 This is a cross-sectional three-dimensional structural diagram of the drainage component of this utility model;

[0020] Figure 6 A three-dimensional cross-sectional structural diagram of the drainage assembly of this utility model when the sealing component is installed;

[0021] Figure 7 This is a three-dimensional structural diagram of the sealing component of this utility model when it seals the drainage assembly.

[0022] Figure 8 This is a three-dimensional exploded structural diagram of the sealing component and sealing block of this utility model.

[0023] Legend:

[0024] 1. Frame; 2. Horizontal screw centrifuge body; 3. Slag discharge port; 4. Sealing component; 5. Liquid discharge port; 6. First sealing groove; 7. Liquid discharge hopper; 8. First sealing component; 9. Filter screen; 10. Fixing component; 11. Bolt; 12. Annular groove; 13. Sealing channel; 14. Second sealing groove; 15. Mounting component; 16. Sealing block; 17. Second sealing component; 18. Liquid discharge channel; 19. Threaded part; 20. Moisture-absorbing cotton layer. Detailed Implementation

[0025] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Reference Figure 1-8 A water-proof mechanism for a horizontal screw discharge centrifuge includes a frame 1 and a centrifuge body 2 mounted on the frame 1. The bottom of the centrifuge body 2 is provided with a drain port 5 and a slag discharge port 3. A drain assembly is installed below the drain port 5. The drain assembly includes a drain hopper 7 and a sealing element 4. A sealing block 16 is provided inside the drain hopper 7. The sealing element 4 has a sealing channel 13 and a liquid outlet channel 18 inside. The sealing channel 13 and the liquid outlet channel 18 are coaxially arranged and interconnected. The sealing channel 13 and the sealing block 16 are mutually sealing and compatible, and the main body 2 of the horizontal screw centrifuge discharges slag and liquid through the slag discharge port 3 and the liquid discharge port 5 respectively. When liquid needs to be discharged, by separating the sealing channel 13 from the sealing block 16, the liquid to be discharged can be discharged through the liquid discharge hopper 7 and the liquid outlet channel 18 through the liquid outlet 5. When the centrifuge is not in use, the sealing channel 13 needs to be sealed by the sealing block 16 to prevent the leakage of residual liquid inside the machine body and cause pollution to the environment.

[0027] As a preferred technical solution of this embodiment, a first sealing element 8 is fixedly installed at the top of the drain hopper 7, and a first sealing groove 6 is opened on the edge of the drain port 5. The first sealing element 8 and the first sealing groove 6 are sealed and adapted. Multiple fixing elements 10 are fixedly installed around the drain hopper 7, and bolts 11 are threadedly connected between the multiple fixing elements 10 and the horizontal screw centrifuge body 2. The drain hopper 7 can be installed by the fixing elements 10 and bolts 11. The setting of the first sealing element 8 and the first sealing groove 6 can prevent liquid from leaking out through the gap between the drain hopper 7 and the drain port 5.

[0028] As a preferred technical solution of this embodiment, the drain hopper 7 is divided into a conical section and a vertical section. The vertical section of the drain hopper 7 is fixedly installed with an installation component 15, which is fixedly connected to the sealing block 16. The sealing block 16 can be fixed inside the drain hopper 7 by means of the installation component 15.

[0029] As a preferred technical solution of this embodiment, the sealing member 4 has an annular groove 12 inside, and a threaded part 19 is provided on the side wall near the outer side of the annular groove 12. The sealing member 4 is threadedly connected to the vertical section of the drain hopper 7 through the threaded part 19. The sealing member 4 can be connected to the drain hopper 7 through the threaded part 19 inside the annular groove 12.

[0030] As a preferred technical solution in this embodiment, the diameter of the liquid outlet channel 18 is larger than that of the blocking channel 13; when the blocking block 16 separates from the blocking channel 13, the diameter of the liquid outlet channel 18 is even larger, making the drainage process smoother and the water flow rate faster.

[0031] As a preferred technical solution of this embodiment, the top end of the sealing member 4 is provided with a second sealing groove 14, which is located between the sealing channel 13 and the threaded portion 19. A second sealing member 17 is fixedly sleeved on the sealing block 16, and the second sealing member 17 is sealed and adapted to the second sealing groove 14. When the sealing block 16 is connected to the sealing channel 13, the second sealing member 17 and the second sealing groove 14 can further increase the sealing performance of the sealing block 16 and prevent leakage.

[0032] As a preferred technical solution in this embodiment, a filter screen 9 is provided inside the conical section of the drain hopper 7; the filter screen 9 can filter the drained liquid, and the filter screen 9 can be cleaned periodically by disassembling the drain hopper 7.

[0033] As a preferred technical solution in this embodiment, a moisture-absorbing cotton layer 20 is provided on the inner side wall of the annular groove 12 near the inner side; the moisture-absorbing cotton layer 20 can absorb water inside the annular groove 12, thereby increasing the leak-proof performance.

[0034] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A water-proof mechanism for a horizontal screw discharge centrifuge, comprising a frame (1) and a horizontal screw centrifuge body (2) mounted on the frame (1), wherein the bottom end of the horizontal screw centrifuge body (2) is provided with a drain port (5) and a slag discharge port (3), characterized in that, A drainage assembly is installed below the drain port (5). The drainage assembly includes a drainage hopper (7) and a sealing element (4). A sealing block (16) is provided inside the drainage hopper (7). A sealing channel (13) and a liquid outlet channel (18) are provided inside the sealing element (4). The sealing channel (13) and the liquid outlet channel (18) are coaxially arranged and interconnected, and respectively penetrate the top and bottom ends of the sealing element (4). The sealing channel (13) and the sealing block (16) are mutually sealing and adapted. The inner part of the sealing element (4) The part has an annular groove (12), and the inner side wall of the annular groove (12) near the outer side has a threaded part (19). The sealing member (4) is threadedly connected to the vertical section through the threaded part (19). The top of the sealing member (4) has a second sealing groove (14), which is located between the sealing channel (13) and the threaded part (19). The sealing block (16) is fixedly fitted with a second sealing member (17), which is sealed and adapted to the second sealing groove (14).

2. The anti-leakage mechanism for a horizontal screw discharge centrifuge according to claim 1, characterized in that, The top of the drain hopper (7) is fixedly installed with a first sealing element (8), and the edge of the drain port (5) is provided with a first sealing groove (6). The first sealing element (8) and the first sealing groove (6) are sealed and adapted. Multiple fixing elements (10) are fixedly installed around the drain hopper (7), and bolts (11) are threadedly connected between the multiple fixing elements (10) and the horizontal screw centrifuge body (2).

3. The anti-leakage mechanism for a horizontal screw discharge centrifuge according to claim 1, characterized in that, The drain hopper (7) is divided into a conical section and a vertical section. The vertical section of the drain hopper (7) is fixedly equipped with an installation component (15), which is fixedly connected to the sealing block (16).

4. The anti-leakage mechanism for a horizontal screw discharge centrifuge according to claim 1, characterized in that, The diameter of the liquid outlet channel (18) is larger than that of the sealing channel (13).

5. The anti-leakage mechanism for a horizontal screw discharge centrifuge according to claim 1, characterized in that, The inside of the conical section of the drain hopper (7) is equipped with a filter screen (9).

6. The anti-leakage mechanism for a horizontal screw discharge centrifuge according to claim 1, characterized in that, The annular groove (12) has a moisture-absorbing cotton layer (20) on its inner sidewall.

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