Solid-liquid separation pressure filter device

Abstract

The application discloses a solid-liquid separation pressure filter device which effectively solves the problem of inconvenient cleaning of a filter screen of an existing solid-liquid separation pressure filter device; the device comprises an upper and lower axial pressure filter cylinder, a pressure plate which is coaxially arranged in the pressure filter cylinder and can move up and down, a fixed block which is coaxially arranged in the pressure filter cylinder and is annular, an impurity cylinder which is arranged at the lower end of the filter screen and penetrates through the pressure filter cylinder, a rotating groove which is coaxially arranged on the inner surface of the fixed block, an annular gear which is coaxially arranged in the rotating groove and can rotate, a scraper which is arranged on the inner surface of the annular gear and can contact the inner surface of the filter screen, a feeding pipe which is arranged at the front end of the pressure filter cylinder, and a water outlet pipe which is arranged at the lower end of the pressure filter cylinder; the device has the advantages of simple structure, novel design, convenient use and high practicability.

Description

Technical Field

[0001] This utility model relates to the field of filtration technology, and in particular to a solid-liquid separation pressure filter device. Background Technology

[0002] In many industrial sectors such as chemical engineering, pharmaceuticals, food processing, and environmental water treatment, solid-liquid separation is a crucial process, and filter presses are widely used due to their high efficiency and wide adaptability. The core component of traditional filter presses, the filter screen, generally faces a critical problem during long-term operation: impurities easily accumulate and cake on the screen surface and in the pores, leading to filter clogging. This clogging not only significantly reduces the filtration rate and filter press efficiency, forcing production interruptions for cleaning and increasing downtime maintenance costs, but can also affect separation performance due to increased filtration resistance, and even cause filter screen damage. This is especially true for filter presses using conical filter screens, whose design aims to improve material distribution or increase the effective filtration area using the conical space. However, the internal structure of the conical shape is relatively complex, and the angle of the filter screen surface varies, making it easier for clogging material to accumulate in the conical area and more difficult to remove by conventional methods.

[0003] Currently, solving filter screen clogging mainly relies on passive methods such as manual cleaning after shutdown or external high-pressure water rinsing. However, these solid-liquid separation filter press devices have the following drawbacks in actual use: manual cleaning of the filter screen is time-consuming, labor-intensive, and poses safety hazards, while high-pressure water cleaning may damage the fine structure of the filter screen due to improper control of the impact force or fail to completely remove highly adhesive clogging materials. Therefore, there is an urgent need to develop a solid-liquid separation filter press device that can efficiently and automatically clean the conical filter screen during the filtration process or without frequent shutdowns. Utility Model Content

[0004] In view of the above situation and in order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a solid-liquid separation filter press device, which effectively solves the problem that the filter screen of the existing solid-liquid separation filter press device is not easy to clean.

[0005] The technical solution is as follows: This utility model includes a filter cylinder with an upper and lower axial direction. A pressure plate that can move up and down is coaxially arranged inside the filter cylinder. An annular fixing block is coaxially arranged inside the filter cylinder. A filter screen is provided at the lower end of the fixing block. An impurity cylinder that penetrates the filter cylinder is provided at the lower end of the filter screen. A rotating groove is coaxially opened on the inner surface of the fixing block. A rotatable ring gear is coaxially arranged in the rotating groove. A scraper that can contact the inner surface of the filter screen is provided on the inner surface of the ring gear. A feed pipe is provided at the front end of the filter cylinder. A water outlet pipe is provided at the lower end of the filter cylinder.

[0006] Preferably, the pressure plate is slidably connected to the filter press cylinder, and the upper end of the filter press cylinder is provided with a telescopic cylinder, the output shaft of the telescopic cylinder being coaxially and fixedly connected to the pressure plate.

[0007] Preferably, the ring gear is rotatably connected to the fixed block on the same axis, and a motor located to the right of the ring gear is provided inside the fixed block. A transmission gear that meshes with the ring gear is coaxially provided on the output shaft of the motor.

[0008] Preferably, the lower end of the impurity cylinder is provided with a discharge valve.

[0009] Preferably, the upper end of the fixing block is provided with a conical guide block.

[0010] Preferably, the lower end of the filter press cylinder is provided with multiple support legs evenly distributed along its circumference.

[0011] Compared with the prior art, the beneficial effects of this utility model are: it can realize pressure filtration of sewage, thereby achieving solid-liquid separation and removing impurities. At the same time, it can clean the filter screen in real time during the pressure filtration process or without frequent shutdowns, avoiding the accumulation and caking of impurities on the surface and pores of the filter screen, thus maintaining a high filtration rate and pressure filtration efficiency, reducing production interruptions caused by filter screen clogging, reducing downtime maintenance costs, and making the operation simple, time-saving and labor-saving. Attached Figure Description

[0012] Figure 1 This is the main view axonometric drawing of this utility model.

[0013] Figure 2 This is a full-section main view axonometric drawing of this utility model.

[0014] Figure 3 This is a full-section left-side axonometric drawing of this utility model.

[0015] Figure 4 This is a full-section top-view axonometric drawing of this utility model.

[0016] Figure label: 1. Filter press cylinder; 2. Pressure plate; 3. Fixing block; 4. Filter screen; 5. Impurity cylinder; 6. Rotating groove; 7. Ring gear; 8. Scraper; 9. Feed pipe; 10. Water outlet pipe; 11. Telescopic cylinder; 12. Motor; 13. Transmission gear; 14. Discharge valve; 15. Guide block. Detailed Implementation

[0017] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the implementations of the base model disclosed below.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0019] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0020] Depend on Figures 1 to 4 The filter press includes a filter cylinder 1 with an upper and lower axial orientation. A pressure plate 2 that can move up and down is coaxially arranged inside the filter cylinder 1. An annular fixing block 3 is coaxially arranged inside the filter cylinder 1. A filter screen 4 is provided at the lower end of the fixing block 3. An impurity cylinder 5 that penetrates the filter cylinder 1 is provided at the lower end of the filter screen 4. A rotating groove 6 is coaxially opened on the inner surface of the fixing block 3. A rotatable ring gear 7 is coaxially arranged in the rotating groove 6. A scraper 8 that can contact the inner surface of the filter screen 4 is provided on the inner surface of the ring gear 7. A feed pipe 9 is provided at the front end of the filter cylinder 1. A water outlet pipe 10 is provided at the lower end of the filter cylinder 1.

[0021] In order to move the pressure plate 2 up and down, the pressure plate 2 is slidably connected to the filter cylinder 1. The upper end of the filter cylinder 1 is provided with a telescopic cylinder 11, and the output shaft of the telescopic cylinder 11 is coaxially and fixedly connected to the pressure plate 2.

[0022] In order to make the ring gear 7 rotate, the ring gear 7 is rotatably connected to the fixed block 3 on the same axis. The fixed block 3 is provided with a motor 12 located to the right of the ring gear 7. The output shaft of the motor 12 is coaxially provided with a transmission gear 13 that meshes with the ring gear 7.

[0023] To facilitate the removal of impurities from the impurity cylinder 5, a discharge valve 14 is provided at the lower end of the impurity cylinder 5.

[0024] For ease of use, the upper end of the fixing block 3 is provided with a tapered guide block 15.

[0025] For ease of support, the lower end of the filter press cylinder 1 is provided with multiple support legs evenly distributed along its circumference.

[0026] When using this utility model, when using the solid-liquid separation filter press device, first ensure that all components of the device are in the initial state, the discharge valve 14 is in the closed state, the telescopic cylinder 11 drives the pressure plate 2 to be located in the upper position inside the filter press cylinder 1, the solid-liquid mixture to be processed enters the device through the feed pipe 9 at the front end of the filter press cylinder 1, the material flows evenly to the filter screen 4 area below the fixed block 3 under the guidance of the conical guide block 15, then the telescopic cylinder 11 is started, its output shaft pushes the pressure plate 2 to move downward along the axial direction of the filter press cylinder 1, applying pressure to the material above the filter screen 4, under the action of pressure, the liquid in the material passes through the filter screen 4 to form filtrate, the filtrate is discharged through the water outlet pipe 10 at the lower end of the filter press cylinder 1, while solid impurities are intercepted on the surface and inside of the filter screen 4; During the filtration process or when the filter screen 4 needs to be cleaned, the motor 12 inside the fixed block 3 is started. The output shaft of the motor 12 drives the transmission gear 13 to rotate. The ring gear 7 meshing with the transmission gear 13 rotates coaxially in the rotating groove 6. The scraper 8 on the inner surface of the ring gear 7 rotates synchronously. The scraper 8 is in close contact with the inner surface of the filter screen 4. During the rotation, the impurities accumulated on the surface of the filter screen 4 are scraped off, effectively preventing the impurities from caking and clogging the filter screen 4. The scraped impurities flow into the impurity cylinder 5 due to gravity. When the filtration operation is completed or the impurities accumulate to a certain extent, the pressurization and feeding are stopped, and the discharge valve 14 at the lower end of the impurity cylinder 5 is opened. The impurities scraped off by the scraper 8 and the intercepted solid impurities are discharged from the discharge valve 14 through the impurity cylinder 5 under the action of gravity. After the impurities are removed, the discharge valve 14 is closed, the telescopic cylinder 11 drives the pressure plate 2 to return to its original position, the motor 12 stops working, the ring gear 7 and scraper 8 return to a standstill, and the device is ready to carry out the next round of solid-liquid separation. Throughout the process, the filter cylinder 1 is stably supported by multiple legs at the lower end.

[0027] Compared with the prior art, the beneficial effects of this utility model are as follows: the pressure plate, filter screen, scraper, etc., can realize pressure filtration of sewage, thereby achieving solid-liquid separation and removing impurities. At the same time, the filter screen can be cleaned in real time during the filtration process or without frequent shutdowns, avoiding the accumulation and caking of impurities on the surface and pores of the filter screen, thus maintaining a high filtration rate and filtration efficiency, reducing production interruptions caused by filter screen clogging, lowering downtime maintenance costs, and being easy to operate, saving time and effort. This structure is simple, novel in design, convenient to use, and highly practical.

[0028] It should be noted that, depending on the implementation needs, the various components described in the embodiments of this utility model can be split into more components, or two or more components or parts of components can be combined into new components to achieve the purpose of the embodiments of this utility model.

[0029] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but 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 solid-liquid separation filter press device, comprising a filter press cylinder (1) with an upper and lower axial direction, characterized in that, The filter press (1) is coaxially equipped with a pressure plate (2) that can move up and down. The filter press (1) is coaxially equipped with an annular fixing block (3). The lower end of the fixing block (3) is equipped with a filter screen (4). The lower end of the filter screen (4) is equipped with an impurity cylinder (5) that penetrates the filter press (1). The inner surface of the fixing block (3) is coaxially equipped with a rotating groove (6). The rotating groove (6) is coaxially equipped with a rotating ring gear (7). The inner surface of the ring gear (7) is equipped with a scraper (8) that can contact the inner surface of the filter screen (4). The front end of the filter press (1) is equipped with a feed pipe (9). The lower end of the filter press (1) is equipped with a water outlet pipe (10).

2. The solid-liquid separation and filtration device according to claim 1, characterized in that, The pressure plate (2) is slidably connected to the filter cylinder (1), and the upper end of the filter cylinder (1) is provided with a telescopic cylinder (11). The output shaft of the telescopic cylinder (11) is coaxially and fixedly connected to the pressure plate (2).

3. The solid-liquid separation and filtration device according to claim 1, characterized in that, The ring gear (7) is rotatably connected to the fixed block (3) on the same axis. The fixed block (3) is equipped with a motor (12) located to the right of the ring gear (7). The output shaft of the motor (12) is equipped with a transmission gear (13) that meshes with the ring gear (7) on the same axis.

4. The solid-liquid separation and filtration device according to claim 1, characterized in that, The impurity cylinder (5) is equipped with a discharge valve (14) at its lower end.

5. A solid-liquid separation and filtration device according to claim 1, characterized in that, The fixed block (3) is provided with a conical guide block (15) at its upper end.

6. A solid-liquid separation and filtration device according to claim 1, characterized in that, The filter press (1) is provided with multiple legs evenly distributed along its circumference at its lower end.

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