A slurry filtration apparatus

Abstract

The utility model discloses a kind of slurry filtering devices, it is related to filter equipment technical field, including feed pipe, discharge pipe, screen and cleaning assembly;Contracted section is provided on the feed pipe, the inner diameter of the contracted section is less than the pipeline inner diameter of other parts on the feed pipe;The discharge pipe is connected with the feed pipe, for discharge;The screen is arranged at the junction of the feed pipe and the discharge pipe, for filtering slurry;The cleaning assembly is arranged at the inboard of the feed pipe and / or the discharge pipe, and close to the screen, for cleaning the slurry blocked on the screen.Based on the technical scheme disclosed in the utility model, the solid particles settled and gathered on the screen can be reduced, uniform distribution of material is realized, the probability of screen blockage is reduced, the continuous operation capacity of the equipment is significantly improved, and the slurry filtering demand under complex working conditions can be met.

Description

Technical Field

[0001] This utility model relates to the field of filtration equipment technology, specifically to a slurry filtration device. Background Technology

[0002] In industries such as mining and chemical engineering, slurry filtration is a common production process, and slurry filtration equipment is one of the key pieces of equipment to ensure continuous and stable production.

[0003] However, the widely used slurry filtration equipment has obvious shortcomings: on the one hand, during the material distribution stage, solid particles in the slurry are prone to sedimentation and aggregation due to insufficient flow rate and other issues, resulting in excessive local load on the screen and the formation of clogging blind spots, which seriously affects filtration efficiency and continuous operation time of the equipment; on the other hand, the traditional scraper cleaning method requires the machine to be stopped and the slag removal operation to be completed manually, which not only has high maintenance costs, but also interrupts the continuous production process and reduces production efficiency.

[0004] To address the aforementioned shortcomings, related technologies have attempted to improve the situation by optimizing the screen structure (such as changing the screen aperture distribution or increasing the number of screen layers) or increasing the screen vibration frequency. However, none of these approaches can fundamentally solve the problem of solid particle settling and aggregation caused by uneven material distribution, and they lack an active anti-clogging mechanism, making it difficult to meet the slurry filtration requirements under complex working conditions. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a slurry filtration device to solve the technical problem in the prior art where the sedimentation and aggregation of solid particles causes screen blockage, the sediment layer is difficult to remove, and the slurry filtration requirements cannot be met.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: This utility model provides a slurry filtration device, comprising: The feed pipe has a contraction section, the inner diameter of which is smaller than the inner diameter of other parts of the feed pipe. The discharge pipe is connected to the feed pipe and is used for discharging material; A screen, installed at the connection between the feed pipe and the discharge pipe, is used to filter the slurry; and A cleaning component, located inside the feed pipe and / or the discharge pipe and close to the screen, is used to clean the slurry clogging the screen.

[0007] In some embodiments, the feed tube further includes: The inlet section, located on the side of the contraction section away from the outlet pipe, has a decreasing inner diameter between it and the contraction section; and The diffusion section is located on the side of the contraction section near the discharge pipe, and the inner diameter of the pipe between the diffusion section and the contraction section increases progressively.

[0008] In some embodiments, the feed pipe includes a hose and a connecting pipe for connecting the hose to the discharge pipe; the shrinkage section is disposed on the hose; the slurry filtration device further includes an extruder disposed outside and connected to the shrinkage section, the extruder being used to extrude the shrinkage section to change its inner diameter.

[0009] In some embodiments, a second pressure sensor is provided on the inner side of the inlet section. The second pressure sensor is electrically connected to the extruder and is used to cooperate with the system to control the working state of the extruder.

[0010] In some embodiments, the cleaning component includes: A scraper, movably disposed inside the feed pipe and / or the discharge pipe, is used to scrape away slurry clogging the screen; and A spray assembly, disposed inside the feed pipe and / or the discharge pipe, is used to rinse the screen.

[0011] In some embodiments, a horizontal slide rail is fixed on the discharge pipe near the screen, the scraper is slidably disposed on the horizontal slide rail, the scraper is parallel to the adjacent screen surface, and is also connected to a drive device.

[0012] In some embodiments, the horizontal slide rail extends radially along the pipe to the outside of the discharge pipe, so that the scraper can be moved to the outside of the discharge pipe when not in operation.

[0013] In some embodiments, the spray assembly is disposed on the scraper and includes: Multiple nozzles are detachably mounted on the side of the scraper near the screen; and A water supply pipe is connected to the scraper and to the plurality of nozzles to provide water for spraying.

[0014] In some embodiments, the water supply pipe includes: An internal pipeline, detachably mounted on the inside of the scraper, is connected to the plurality of nozzles; and An external pipeline is connected to the end of the internal pipeline furthest from the plurality of nozzles, and is used to connect to an external water supply system.

[0015] In some embodiments, a first pressure sensor is also provided at the screen, the first pressure sensor being electrically connected to the cleaning assembly and used to cooperate with the system to control the working state of the cleaning assembly.

[0016] Compared with the prior art, the slurry filtration device provided by this utility model, by setting a contraction section on the feed pipe and controlling the inner diameter of the contraction section to be smaller than the inner diameter of other parts of the feed pipe, can form a high-intensity turbulence in the slurry at the contraction section, thereby breaking up the agglomerates of solid particles and allowing the slurry to be evenly spread on the screen. With the help of the cleaning component to clean the slurry clogging the screen from time to time, the amount of solid particles settling and agglomerated on the screen can be reduced, the material can be evenly distributed, the probability of screen clogging can be reduced, the continuous operation capability of the equipment can be significantly improved, and the slurry filtration needs under complex working conditions can be met. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the slurry filtration device in one embodiment of the present invention; Figure 2 This is a schematic diagram of the overall structure of the slurry filtration device in another embodiment of the present invention.

[0018] Explanation of reference numerals in the attached drawings: 1. Feed pipe; 11. Contraction section; 12. Inlet section; 13. Diffusion section; 14. Connecting pipe; 2. Discharge pipe; 3. Screen; 4. Scraper; 5. Spray assembly; 51. Nozzle; 52. Water supply pipe; 521. Inner pipeline; 522. Outer pipeline; 6. Horizontal slide rail; 7. First pressure sensor; 8. Extruder; 9. Second pressure sensor. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] To address the aforementioned technical problems, this utility model provides a slurry filtration device that can reduce the amount of solid particles that settle and accumulate on the screen, achieve uniform material distribution, reduce the probability of screen clogging, significantly improve the continuous operation capability of the equipment, and help meet the slurry filtration needs under complex working conditions.

[0021] Please see Figure 1 , Figure 1 This is a schematic diagram of the overall structure of a slurry filtration device in one embodiment of the present invention. The slurry filtration device includes an inlet pipe 1, an outlet pipe 2, and a screen 3. The inlet pipe 1 is connected to the outlet pipe 2, and the screen 3 can be set at the connection between the two.

[0022] During operation, the slurry enters through the feed pipe 1 and flows towards the discharge pipe 2. During this process, the screen 3 filters the slurry, and the slurry is finally discharged from the discharge pipe 2, completing the filtration and discharge process.

[0023] In this embodiment, the feed pipe 1 is provided with a shrinkage section 11. The shrinkage section 11 can be provided on the section of the feed pipe 1 near the discharge pipe 2. The inner diameter of the shrinkage section 11 is smaller than the inner diameter of other parts of the feed pipe 1.

[0024] In this way, the slurry will accelerate and form high-intensity turbulence when it flows to the contraction section 11, so as to break up the agglomerates of solid particles in the slurry, thereby reducing the probability of solid particles settling and agglomerating on the screen 3.

[0025] In one embodiment, please refer to Figure 1 The feed pipe 1 can be equipped with a Laval pipe structure, which is a pipe that first contracts and then expands.

[0026] At this point, the feed pipe 1 also includes an inlet section 12 and a diffuser section 13. The inlet section 12 is located on the side of the contraction section 11 away from the discharge pipe 2, while the diffuser section 13 can be located on the side of the contraction section 11 closer to the discharge pipe 2. The inner diameter of the pipe between the inlet section 12 and the contraction section 11 can gradually decrease, while the inner diameter of the pipe between the contraction section 11 and the diffuser section 13 can gradually increase. Finally, the diffuser section 13, or the section of the diffuser section 13 away from the contraction section 11, can be connected to the aforementioned discharge pipe 2.

[0027] In this way, as the slurry flows from the inlet section 12 to the contraction section 11, the reduced pipe diameter increases the fluid velocity, creating high-intensity turbulence within the slurry and breaking up any agglomerates of solid particles. Subsequently, the slurry enters the diffusion section 13, where the pipe diameter gradually increases. Within the diffusion section 13, the slurry velocity decreases, and under the influence of this velocity and the pipe structure, the slurry is evenly spread onto the screen 3, ensuring uniform material reception on the screen 3.

[0028] Please see Figure 1 The feed pipe 1 and the discharge pipe 2 can be connected by a flange, and the screen 3 can be fixedly installed in the slot on the flange end face by the screen frame to achieve detachable installation.

[0029] Based on this, the aforementioned cleaning component can be installed in the feed pipe 1 and / or the discharge pipe 2 near the screen 3 to facilitate the cleaning of the slurry clogging the screen 3.

[0030] In this embodiment, the cleaning assembly may include a scraper 4 and a spray assembly 5. The scraper 4 may be movably disposed inside the feed pipe 1 and / or the discharge pipe 2, while the spray assembly 5 may be disposed inside the feed pipe 1 and / or the discharge pipe 2 near the screen 3.

[0031] In this way, when the scraper 4 is working, it can scrape off the slurry clogging the surface of the screen 3, while the spray assembly 5 can wash the screen 3, thereby improving the anti-clogging effect of the screen 3.

[0032] In one embodiment, the scraper 4 can be positioned on the lower surface of the screen 3. In this case, to install the scraper 4, a horizontal slide rail 6 can be fixedly installed on the discharge pipe 2 near the screen 3. The horizontal slide rail 6 can extend radially along the discharge pipe 2, and the scraper 4 can be slidably mounted on the horizontal slide rail 6, making it parallel to the lower surface of the screen 3. The scraper 4 is also connected to a drive device (not shown in the figure).

[0033] The aforementioned driving device is mainly used to drive the scraper 4 to slide on the horizontal slide rail 6. It can be any device that can meet the movement requirements of the scraper 4. For example, in some embodiments, the driving device can be a cylinder fixed to the outside of the discharge pipe 2 and directly connected to the scraper 4, or a similar driving component. There is no specific limitation on this.

[0034] In this way, when the screen 3 becomes clogged, the drive device can drive the scraper 4 to move along the horizontal slide rail 6. The scraper 4 is parallel and close to the lower surface of the screen 3, so it can gradually scrape off the slurry that clogs the screen 3 during movement, thereby playing a cleaning role.

[0035] In other embodiments, in order to reduce the occupancy of the scraper 4 on the slurry flow channel, the aforementioned horizontal slide rail 6 can extend through the wall of the discharge pipe 2 to the outside of the discharge pipe 2, so that the scraper 4 can move to the outside of the discharge pipe 2 via the horizontal slide rail 6 when not in operation.

[0036] Based on this, in order to prevent the slurry from flowing out from the position where the horizontal slide rail 6 extends, the position where the horizontal slide rail 6 is set on the discharge pipe 2 can be made leak-proof. For example, when the scraper 4 is located outside the discharge pipe 2 and is not working, the opening of the horizontal slide rail 6 on the outer wall of the discharge pipe 2 can be directly sealed to prevent the slurry from flowing out.

[0037] In one embodiment, based on the aforementioned arrangement of the scraper 4, the spray assembly 5 can be directly mounted on the scraper 4, allowing the spray assembly 5 to move with the scraper 4 and wash the screen 3. In this case, the spray assembly 5 may include multiple nozzles 51 and a water supply pipe 52. The multiple nozzles 51 can be positioned on the side of the scraper 4 near the screen 3, and the water supply pipe 52 can be connected to each nozzle 51 to supply water to each nozzle 51.

[0038] Specifically, multiple nozzles 51 can be evenly distributed on the side of the scraper 4 near the screen 3, and each nozzle 51 can be detachably connected to the scraper 4 by means of a threaded connection.

[0039] The aforementioned water supply pipe 52 includes an inner pipe 521 and an outer pipe 522. The inner pipe 521 can be directly embedded inside the scraper 4, for example, it can be threaded to the scraper 4 so that one end extends to the outside of the scraper 4; the outer pipe 522 can be connected to the end of the inner pipe 521 located outside the scraper 4, and the end of the outer pipe 522 away from the inner pipe 521 can be connected to an external water supply system (such as a water pump).

[0040] Based on this, each nozzle 51 can be spaced apart along the extension direction of the inner pipe 521 and can be connected to the inner pipe 521 by means of threaded connection.

[0041] In this way, the external water supply system can supply spray water to each nozzle 51 through the water supply pipe 52; when the scraper 4 moves along the horizontal slide rail 6 and scrapes off the slurry clogging the surface of the screen 3, each nozzle 51 can perform synchronous or asynchronous rinsing operations on the screen 3, thereby efficiently cleaning the screen 3, avoiding clogging, and maintaining its stable filtration performance.

[0042] In one embodiment, to improve the timeliness of the anti-clogging response, the slurry filtration device further includes a first pressure sensor 7 disposed at the screen 3, which can be connected to an external control system (such as a PLC control system) via a wire. The control system can be further connected to the drive device of the scraper 4 and an external water supply system (such as a water pump), thereby indirectly realizing the electrical connection between the first pressure sensor 7 and the aforementioned drive device and external water supply system.

[0043] In this way, the first pressure sensor 7, together with the external control system, can monitor the pressure on the screen 3 in real time, and adjust the operating parameters of the drive device and the external water supply system in a timely manner according to the specific pressure value, so as to achieve automatic cleaning when necessary and avoid the problem of screen 3 clogging not being responded to in a timely manner.

[0044] It should be noted that in this embodiment, the feed pipe 1 can be configured with a Laval tube structure to achieve uniform material distribution on the screen 3, thereby reducing the probability of screen 3 clogging. However, in other embodiments, the contraction section 11 on the feed pipe 1 can be further configured as a variable diameter structure to meet diverse application scenarios.

[0045] For example, in one embodiment, please refer to Figure 2 The aforementioned feed pipe 1 includes a flexible hose and a connecting pipe 14 for connecting the flexible hose and the discharge pipe 2; wherein the connecting pipe 14 and the discharge pipe 2 can be connected by a flange, and the aforementioned shrink section 11 can be provided on the flexible hose.

[0046] Based on this, a squeezer 8 can be installed on the outside of the hose. The squeezer 8 can be arranged around the hose and can squeeze the contraction section 11 to change the inner diameter of the contraction. Under the action of the squeezer 8, the inlet section 12 and the diffuser section 13 can be respectively formed on both sides of the contraction section 11 on the hose; wherein, the inlet section 12 is located on the side of the contraction section 11 away from the connecting pipe 14, while the diffuser section 13 is located on the side of the contraction section 11 closer to the connecting pipe 14.

[0047] It should be noted that the specific material of the aforementioned hose can be flexibly set according to needs. For example, it can be a stainless steel metal hose, a fluororubber hose, or other pipe materials that can meet the requirements of chemical slurry transmission, and there is no specific limitation on this. Similarly, the aforementioned extruder 8 can be a hydraulic tube shrinking machine or a similar tube shrinking device, and there is no specific limitation on this either.

[0048] In another embodiment, in order to automatically control the inner diameter of the pipe in the contraction section 11, the slurry filtration device may also include a second pressure sensor 9, which may be located inside the inlet section 12 and electrically connected to the extruder 8 described above through the control system.

[0049] In this way, the second pressure sensor 9 can work with the control system to monitor the fluid pressure inside the inlet section 12, so that the control system can control the operation of the extruder 8 according to the monitored pressure value, thereby changing the extrusion force of the extruder 8 on the hose and thus changing the diameter of the contraction section 11.

[0050] To better understand this utility model, the following is combined with... Figure 1 The technical solution of one embodiment of this utility model will be described in detail below: High-solids slurry enters the feed pipe 1. When the slurry flows through the contraction section 11, the flow velocity increases sharply (following Bernoulli's principle), forming high-intensity turbulence. This turbulence has strong shear force, which can effectively impact and disperse particle agglomerates formed by sedimentation in the slurry, causing them to redistribute into individual particles or small clusters. Subsequently, the slurry flows into the diffusion section 13, where the flow velocity decreases, and the dynamic pressure is converted into static pressure, allowing the slurry to be spread evenly and stably across the entire screen 3. During this process, in conjunction with the cleaning component, slurry clogging the screen 3 can also be automatically cleaned.

[0051] In this way, local particle accumulation caused by uneven material distribution can be fundamentally avoided, solving the root cause of screen blockage. This significantly improves the continuous operation capability of the equipment and helps meet the slurry filtration needs under complex working conditions.

[0052] In the description of this application, it should be noted that the terms "upper" and "lower," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0053] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0054] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A slurry filtration device, characterized in that, include: The feed pipe has a contraction section, the inner diameter of which is smaller than the inner diameter of other parts of the feed pipe. The discharge pipe is connected to the feed pipe and is used for discharging material; A screen, installed at the connection between the feed pipe and the discharge pipe, is used to filter the slurry; and A cleaning component, located inside the feed pipe and / or the discharge pipe and close to the screen, is used to clean the slurry clogging the screen.

2. The slurry filtration device according to claim 1, characterized in that, The feed pipe also includes: The inlet section, located on the side of the contraction section away from the outlet pipe, has a decreasing inner diameter between it and the contraction section; and The diffusion section is located on the side of the contraction section near the discharge pipe, and the inner diameter of the pipe between the diffusion section and the contraction section increases progressively.

3. The slurry filtration device according to claim 2, characterized in that, The feed pipe includes a hose and a connecting pipe for connecting the hose to the discharge pipe; the shrinkage section is disposed on the hose; the slurry filtration device further includes an extruder disposed outside the shrinkage section and connected thereto, the extruder being used to extrude the shrinkage section to change its inner diameter.

4. The slurry filtration device according to claim 3, characterized in that, A second pressure sensor is provided on the inner side of the inlet section. The second pressure sensor is electrically connected to the extruder and is used to cooperate with the system to control the working state of the extruder.

5. The slurry filtration device according to claim 1, characterized in that, The cleaning component includes: A scraper, movably disposed inside the feed pipe and / or the discharge pipe, is used to scrape away slurry clogging the screen; and A spray assembly, disposed inside the feed pipe and / or the discharge pipe, is used to rinse the screen.

6. The slurry filtration device according to claim 5, characterized in that, A horizontal slide rail is fixed on the discharge pipe near the screen. The scraper is slidably mounted on the horizontal slide rail. The scraper is parallel to the adjacent screen surface and is also connected to a drive device.

7. The slurry filtration device according to claim 6, characterized in that, The horizontal slide rail extends radially along the pipe to the outside of the discharge pipe, so that the scraper can be moved to the outside of the discharge pipe when not in operation.

8. The slurry filtration device according to claim 5, characterized in that, The spray assembly is disposed on the scraper and includes: Multiple nozzles are detachably mounted on the side of the scraper near the screen; and A water supply pipe is connected to the scraper and to the plurality of nozzles to provide water for spraying.

9. The slurry filtration device according to claim 8, characterized in that, The water supply pipe includes: An internal pipeline, detachably mounted on the inside of the scraper, is connected to the plurality of nozzles; and An external pipeline is connected to the end of the internal pipeline furthest from the plurality of nozzles, and is used to connect to an external water supply system.

10. The slurry filtration apparatus according to any one of claims 1-9, characterized in that, A first pressure sensor is also provided at the screen, and the first pressure sensor is electrically connected to the cleaning component to cooperate with the system to control the working state of the cleaning component.

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