Solid-liquid separation device for wet electronic chemical production

Abstract

The utility model discloses a solid -liquid separation device of wet electronic chemical production relates to solid -liquid separation device technical field, including casing and the shell cover of solid joint in casing top, the inside of casing is provided with candle type filter core, the number of candle type filter core is multiple, the utility model discloses four cavities formed through the baffle, sleeve and casing, and liquid first flows through these cavities before entering candle type filter core filtration, utilizes the flow path extension and flow field buffer to realize natural sedimentation, makes part big particle size, high density solid particle advance settlement, reduces the solid particle amount of direct impact filter core, reduces filter core jam speed, prolongs filter core life, reduces maintenance replacement frequency, and only through the structure of additional baffle, sleeve etc. forms the precipitation cavity, need not complicated additional equipment, can realize the precipitation pretreatment function on the basis of original candle type filter, and the reforming difficulty is low, and it is convenient for industrial application and popularization.

Description

Technical Field

[0001] This utility model relates to the technical field of solid-liquid separation devices, specifically to a solid-liquid separation device for the production of wet electronic chemicals. Background Technology

[0002] Candle filters, as a highly efficient solid-liquid separation device, are widely used in fields with strict requirements for fluid purity, such as wet electronics, chemicals, pharmaceuticals, and fine chemicals, due to their high filtration accuracy and ease of operation. Their core working principle is as follows: the liquid to be filtered enters the filter housing under pressure difference, and the solid particles are intercepted and the clear liquid is separated through the filter medium of the candle filter element. The intercepted solid particles can be removed by backwashing or other methods to restore the filter element's filtration performance.

[0003] However, traditional candle filters still have certain problems in use. For example, they lack a pretreatment and sedimentation process for solid particles. When the liquid to be filtered enters the filter directly, it carries all the solid particles and flows directly to the candle filter element. The filter element is completely responsible for interception and separation. This structural design can easily lead to a large number of solid particles impacting the surface of the filter element without sedimentation. This not only accelerates the wear rate of the filter element, but also forces the filter element to intercept too many particles in a short period of time, which can easily cause filter element blockage, shorten the service life of the filter element, and increase equipment maintenance costs. Utility Model Content

[0004] The purpose of this invention is to provide a solid-liquid separation device for the production of wet electronic chemicals, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: including a housing and a cover fixed to the top of the housing, wherein a candle filter element is provided inside the housing, and the number of candle filter elements is multiple;

[0006] The shell has an internal sleeve, and a sealing plate that is fixedly connected to the inner wall of the shell is symmetrically fitted onto the surface of the sleeve. Four partitions are arranged at equal intervals between the shell and the sleeve. The surface of the partitions is provided with a water channel. The surface of the sleeve is connected to a liquid inlet pipe. A delivery pipe is installed on the surface of the shell, and one end of the delivery pipe extends into the interior of the shell and is located between the shell and the sleeve.

[0007] In a further embodiment, the interior of the housing is provided with four equally spaced drain pipes, which are connected to the bottom sealing plate of the two sealing plates, and one end of the drain pipe extends to the outside of the housing and is equipped with a valve.

[0008] In a further embodiment, the surface of the housing is fixedly connected with two legs, which are symmetrically installed.

[0009] In a further embodiment, the surface of the housing is fitted with an infusion tube, one end of which extends into the interior of the housing and is connected to the candle filter element via a pipe. The surface of the infusion tube, located outside the housing, is connected to a backflush connection pipe, and valves are installed on both the surface of the infusion tube and the surface of the backflush connection pipe.

[0010] In a further embodiment, a drain pipe is fitted at the bottom of the housing, and the drain pipe communicates with the interior of the housing.

[0011] In a further embodiment, the candle filter element comprises a top cover at the top, a sealing cover at the bottom, a central support tube between the top cover and the sealing cover, a protective layer between the top cover and the sealing cover and sleeved on the surface of the central support tube, and a filter media layer between the protective layer and the central support tube.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention utilizes four cavities formed by partitions, sleeves, and a shell. Before entering the candle filter element, the liquid flows through these cavities, achieving natural sedimentation through the extended flow path and buffered flow field. This allows some large-diameter, high-density solid particles to settle in advance, reducing the amount of solid particles directly impacting the filter element, lowering the filter element clogging rate, extending the filter element's service life, and reducing maintenance and replacement frequency. Furthermore, by simply adding partitions and sleeves to form sedimentation cavities, no complex additional equipment is required. This allows for the implementation of sedimentation pretreatment functions on the basis of existing candle filters, making the modification difficult and facilitating industrial application and promotion. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0015] Figure 2 This is a partial structural cross-sectional view of an embodiment of the present utility model;

[0016] Figure 3 This is a partial structural cross-sectional view of an embodiment of the present utility model;

[0017] Figure 4 This is a cross-sectional view of a candle filter element according to an embodiment of the present utility model;

[0018] Figure 5 This is a top sectional view of a partial structure of an embodiment of the present utility model.

[0019] In the diagram: 1. Shell; 2. Shell cover; 3. Candle filter element; 301. Top cover; 302. Sealing cover; 303. Central support tube; 304. Protective layer; 305. Filter media layer; 4. Sleeve; 5. Sealing plate; 6. Partition; 7. Water channel; 8. Inlet pipe; 9. Delivery pipe; 10. Drain pipe; 11. Support leg; 12. Infusion pipe; 13. Backflush connection pipe; 14. Sewage pipe. Detailed Implementation

[0020] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] This embodiment discloses a solid-liquid separation device for the production of wet electronic chemicals, including a housing 1 and a cover 2 fixed to the top of the housing 1. A candle filter element 3 is disposed inside the housing 1. Multiple candle filter elements 3 are included. Each candle filter element 3 consists of a top cover 301 at the top, a sealing cover 302 at the bottom, a central support tube 303 between the top cover 301 and the sealing cover 302, a protective layer 304 between the top cover 301 and the sealing cover 302 and sleeved on the surface of the central support tube 303, and a filter media layer 305 between the protective layer 304 and the central support tube 303. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the housing 1 provides a closed filtration space for the entire device and serves as the mounting base for other components. The housing cover 2 is fixed to the top of the housing 1, sealing the housing 1 and facilitating the inspection and maintenance of internal components. Multiple candle filter elements 3, as the core filtration components, are evenly distributed inside the housing 1 to intercept solid particles in the liquid. The positions and functions of each component are as follows: the top cover 301 and the sealing cover 302 are located at the top and bottom of the candle filter element 3, respectively, forming a closed structure. The top cover 301 is used to fix the filter element in conjunction with the internal structure of the housing 1. The sealing cover 302 ensures the sealing of the bottom of the filter element, preventing unfiltered liquid from directly mixing into the filtrate. The central support tube 303 connects the top cover 301 and the sealing cover 302, passing through the center of the filter element, supporting the entire filter element structure, and also serving as a flow channel for the filtered clear liquid. The tube wall is covered with pores. The filter element has uniform small holes of 2-5 mm. The protective layer 304 is sleeved on the surface of the central support tube 303, located between the top cover 301 and the sealing cover 302, and is the outermost layer of the filter element. It comes into contact with the liquid to be filtered before the filter media layer 305, and can intercept larger particulate impurities. The inner filter media layer 305 is made of coarse-pore metal mesh or porous sponge. The filter media layer 305 is located between the protective layer 304 and the central support tube 303. It is the key layer for achieving fine filtration and can intercept smaller solid particles in the liquid, ensuring that the liquid flowing out of the central support tube 303 meets the filtration accuracy requirements. All components work together to form a complete filtration unit. After pretreatment, the liquid to be filtered comes into contact with the outer protective layer 304 of the filter element and then passes through the filter media layer 305 to complete the filtration. The clear liquid enters the central support tube 303 and is discharged, realizing solid-liquid separation.

[0022] Preferably, two legs 11 are fixedly connected to the surface of the housing 1, and the two legs 11 are symmetrically installed. An infusion tube 12 is fitted onto the surface of the housing 1, with one end of the infusion tube 12 penetrating into the interior of the housing 1 and connected to the candle filter element 3 via a pipe. A backflush connection pipe 13 is connected to the surface of the infusion tube 12 and located outside the housing 1. Valves are installed on both the surface of the infusion tube 12 and the surface of the backflush connection pipe 13. A drain pipe 14 is fitted to the bottom of the housing 1, and the drain pipe 14 communicates with the interior of the housing 1. Figure 1 , Figure 2 and Figure 3As shown, the support legs 11 are symmetrically fixed on both sides of the housing 1, providing stable support for the entire solid-liquid separation device and maintaining a certain distance between the housing 1 and the ground. This avoids direct contact between the bottom of the housing 1 and the ground, preventing corrosion or wear, and also provides space for the installation and operation of the bottom drain pipe 14, ensuring the overall stability of the device. The infusion pipe 12 serves as the main channel for exporting the clean liquid, with one end connected to the central support pipe 303 of the candle filter element 3. This allows the clean liquid filtered by the candle filter element 3 to be exported from the inner cavity of the housing 1 to external storage or subsequent processes, achieving the collection of filtered products. The back-blowing connection pipe 13 is used to connect to external compressed air or cleaning air. With the valves on its pipeline, it can... When the filter element is clogged, the airflow is controlled. The airflow enters the filter element's central support tube 303 through the infusion pipe 12 and then blows outwards towards the filter media layer 305, blowing off the trapped solid particles from the filter element surface. This achieves online backwashing and regeneration of the filter element, restoring its filtration performance without disassembly. The valve on the infusion pipe 12 can be closed during backwashing to prevent airflow or impurities from flowing back into the clear liquid storage end. At the same time, it controls the filtrate discharge rate during normal filtration. The drain pipe 14 serves as an impurity discharge channel, allowing the solid particles precipitated inside the housing 1 to be discharged from the bottom of the housing 1, preventing impurities from accumulating inside the housing 1, clogging the flow channel, or contaminating the liquid to be filtered, thus ensuring the continuous and stable operation of the device.

[0023] Furthermore, a sleeve 4 is provided inside the housing 1. A sealing plate 5, which is symmetrically fixed to the inner wall of the housing 1, is fitted onto the surface of the sleeve 4. Four equally spaced partitions 6 are assembled between the housing 1 and the sleeve 4. Water channels 7 are formed on the surface of the partitions 6. An inlet pipe 8 is connected to the surface of the sleeve 4. A delivery pipe 9 is installed on the surface of the housing 1, with one end of the delivery pipe 9 penetrating into the interior of the housing 1 and located between the housing 1 and the sleeve 4. Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, the sleeve 4 is vertically installed inside the housing 1. Two sealing plates 5 are symmetrically fixedly fitted onto its outer surface. The edges of the sealing plates 5 are tightly fixed to the inner wall of the housing 1, forming a structure with the sleeve 4 in the center and the sealing plates 5 sealing the top and bottom. This divides the annular space between the housing 1 and the sleeve 4 into independent cavities. Four partitions 6 are equidistantly distributed in the annular space between the housing 1 and the sleeve 4. Their upper and lower ends are connected to the two sealing plates 5 respectively, and their sides are fixed to the inner wall of the housing 1 and the outer surface of the sleeve 4 respectively, further dividing the annular space into four independent and equally sized fan-shaped cavities. Water channels 7 are opened at specific positions on the partitions 6, allowing adjacent cavities to communicate with each other through the water channels 7, forming a continuous flow channel. One end of the liquid inlet pipe 8 is connected to the outer surface of the sleeve 4, and the other end extends to the outside of the housing 1. It is used to transport the liquid to be filtered into the cavity between the housing 1 and the sleeve 4. One end of the delivery pipe 9 penetrates the wall of the housing 1 and extends into the cavity between the housing 1 and the sleeve 4. It is located at different positions from the liquid inlet pipe 8. The cavity or flow channel ends at one end and the other end is located outside the housing 1, used to discharge the pre-treated liquid. The sleeve 4 serves as the mounting carrier for the filter element, physically separating the filtration zone from the pretreatment zone to prevent untreated liquid from directly contacting the filter element. The sealing plate 5 ensures that the liquid to be filtered can only flow in the cavity between the housing 1 and the sleeve 4 by sealing the top and bottom, preventing short circuits or leaks. The four baffles 6 divide the annular space into four cavities, which, together with the water channel 7, form a series of guiding channels. After the liquid to be filtered enters the first cavity from the inlet pipe 8, it can only flow through the other three cavities in sequence through the water channel 7, forcibly extending the residence time of the liquid in the pretreatment zone. The natural sedimentation of large-diameter solid particles is achieved by using gravity and flow field buffering, completing the pretreatment before filtration. The inlet pipe 8 is responsible for introducing the liquid to be filtered into the pretreatment cavity, while the conveying pipe 9 discharges the pre-treated liquid to the subsequent filtration stage, realizing a continuous process from sedimentation pretreatment to fine filtration, reducing the amount of solid particles that directly impact the filter element.

[0024] Finally, four equally spaced drain pipes 10 are provided inside the housing 1. The drain pipes 10 are connected to the bottom sealing plate 5 of the two sealing plates 5, and one end of the drain pipe 10 extends to the outside of the housing 1 and is equipped with a valve, such as... Figure 1 , Figure 2 and Figure 5As shown, four drain pipes 10 are arranged equidistantly inside the housing 1 and are precisely assembled with the housing 1 and the sealing plate 5. One end of the drain pipe 10 is connected to the bottom sealing plate 5, which is located at the bottom of the two sealing plates 5. Specifically, it passes through the bottom sealing plate 5 and corresponds to the four independent cavities between the housing 1 and the sleeve 4, ensuring that the liquid in each cavity can flow into the corresponding drain pipe 10 individually. Since the four drain pipes 10 correspond to the four cavities and are connected to the bottom sealing plate 5, the large-diameter solid particles deposited in each cavity and the residual liquid at the bottom of the cavity can be discharged directly, avoiding the accumulation of impurities in the cavity and blocking the flow channel, while reducing the retention and waste of unfiltered liquid.

[0025] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A solid-liquid separation device for wet electronic chemical production, comprising a housing (1) and a cover (2) fixed to the top of the housing (1), characterized in that: The housing (1) is provided with a candle filter element (3) inside, and there are multiple candle filter elements (3); The shell (1) is provided with a sleeve (4) inside. The surface of the sleeve (4) is symmetrically fitted with a sealing plate (5) that is fixed to the inner wall of the shell (1). Four partitions (6) are arranged at equal intervals between the shell (1) and the sleeve (4). The surface of the partition (6) is provided with a water channel (7). The surface of the sleeve (4) is connected to a liquid inlet pipe (8). The surface of the shell (1) is equipped with a delivery pipe (9), and one end of the delivery pipe (9) penetrates into the interior of the shell (1) and is located between the shell (1) and the sleeve (4).

2. The solid-liquid separation apparatus for wet electronic chemical production according to claim 1, characterized in that: The interior of the housing (1) is provided with four equally spaced drain pipes (10), which are connected to the bottom sealing plate (5) of the two sealing plates (5), and one end of the drain pipe (10) extends to the outside of the housing (1) and is equipped with a valve.

3. The solid-liquid separation apparatus for wet electronic chemical production according to claim 1, characterized in that: The surface of the housing (1) is fixedly connected with two legs (11), which are symmetrically installed.

4. The solid-liquid separation apparatus for wet electronic chemical production according to claim 1, characterized in that: The surface of the housing (1) is fitted with an infusion tube (12), one end of which penetrates into the interior of the housing (1) and is connected to the candle filter element (3) through a pipe. The surface of the infusion tube (12) and the exterior of the housing (1) are connected to a back-blowing connection pipe (13), and valves are installed on both the surface of the infusion tube (12) and the surface of the back-blowing connection pipe (13).

5. The solid-liquid separation apparatus for wet electronic chemical production according to claim 1, characterized in that: The bottom of the housing (1) is equipped with a drain pipe (14), which is connected to the interior of the housing (1).

6. The solid-liquid separation apparatus for wet electronic chemical production according to claim 1, characterized in that: The candle filter element (3) consists of a top cover (301) at the top, a sealing cover (302) at the bottom, a central support tube (303) between the top cover (301) and the sealing cover (302), a protective layer (304) between the top cover (301) and the sealing cover (302) and sleeved on the surface of the central support tube (303), and a filter media layer (305) between the protective layer (304) and the central support tube (303).

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