A filter barrel with anti-crystallization and quick replacement filter element

Abstract

The utility model relates to filter barrel technical field discloses a kind of filter barrel of preventing crystallization quick replacement filter core, comprising: filter barrel barrel body, its inner wall position close to bottom is provided with support seat, the upper portion of support seat is provided with at least two groups of limiting block along the equidistance of inner wall and is set, installation clamping groove is formed between support seat and limiting block, and insertion gap is formed between adjacent limiting block;Filter core seat, its outer circumferential surface is equidistantly provided with the installation block corresponding with limiting block along the circumference, the filter core seat is inserted to the inner wall bottom position of filter barrel barrel body along insertion gap, then rotates so that installation block is clamped into installation clamping groove.Using the mechanical locking structure of "insertion, rotation, clamping", completely avoid the damage caused by violent disassembly to filter core seat and filter barrel barrel body due to crystallization lock, significantly reduce maintenance cost and component replacement frequency.

Description

Technical Field

[0001] This utility model relates to the field of filter barrel technology, and in particular to a filter barrel with anti-crystallization and quick filter element replacement. Background Technology

[0002] In industries such as fine chemicals, electroplating, PCB manufacturing, and environmental protection, filter canisters are often used for online filtration of high-concentration, easily crystallizing chemical solutions (such as high-concentration acid and alkali solutions, saturated salt solutions, and electroplating solutions). In existing filter canister structures, the filter element holder (or filter element locking cover) typically engages with the internal thread on the top of the filter canister via external threads. This allows for the installation and fixation of the filter element holder, and also compresses the sealing ring, thus sealing the filter element within the canister's internal cavity. This threaded connection method offers advantages such as simple structure, high axial clamping force, and reliable sealing, and is widely used under normal operating conditions.

[0003] However, when the filter cartridge is used with the aforementioned easily crystallizing chemical solutions, this threaded connection structure has a serious inherent defect. During shutdown, cleaning, or maintenance after each filtration operation, despite evacuation and rinsing, trace amounts of chemical solution can easily remain in the microscopic irregularities such as the meshing gaps between the external threads of the filter cartridge holder and the internal threads of the filter cartridge, and the relief grooves. These residual solutions, during equipment settling, will rapidly precipitate hard crystals due to solvent evaporation, temperature drop, or concentration changes. These crystals firmly fill and lock between the threaded parts, generating a "crystallization adhesion force" far greater than the thread preload, thus completely locking the filter cartridge holder to the filter cartridge body. This makes the filter cartridge holder difficult to remove, easily causing damage and requiring frequent replacements. Utility Model Content

[0004] Based on the above, the purpose of this utility model is to provide a filter bucket for quick replacement of filter elements to prevent crystallization, thereby solving the problem of filter element seats being difficult to remove and causing damage.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: This utility model provides a filter canister for quick filter element replacement with anti-crystallization function, comprising: The filter barrel body has a support base near the bottom of its inner wall. Above the support base, at least two sets of limiting blocks are evenly spaced along the circumference of the inner wall. An installation groove is formed between the support base and the limiting blocks, and an insertion gap is formed between adjacent limiting blocks. The filter element holder has mounting blocks that are evenly spaced along its outer circumference and correspond to the limiting block. The filter element holder is inserted into the bottom of the inner wall of the filter barrel along the insertion gap, and then rotated so that the mounting blocks are engaged in the mounting slots.

[0006] Preferably, the bottom of the filter barrel is provided with an inlet and an outlet, and the inlet is located at the center of the bottom of the filter barrel; A sealing guide hood is provided above the outlet, and the filter element seat is provided above the sealing guide hood.

[0007] Preferably, a sealing groove is provided at the bottom of the filter element holder; The top of the sealing guide shroud is provided with a sealing edge, which can be inserted into the sealing groove.

[0008] Preferably, the filter element holder has a plurality of mounting holes, and a plurality of filter elements are detachably disposed in the mounting holes, and the mounting holes are connected to the sealed flow guide cover.

[0009] Preferably, the sealing guide shield is in the shape of a horn, which is narrow at the bottom and wide at the top.

[0010] Preferably, a sealing ring is also provided between the sealing guide shroud and the outlet.

[0011] Preferably, a flow gap is formed between adjacent mounting blocks, and the inlet communicates with the flow gap.

[0012] Preferably, the top of the filter barrel body is also provided with a filter barrel cover.

[0013] The beneficial effects of this utility model are as follows: (1) This utility model abandons the traditional threaded connection method and adopts a mechanical locking structure of "insertion, rotation, and snap-fit". The filter element seat is inserted through the insertion gap, and after rotating a certain angle, the mounting block is snapped into the mounting slot to achieve axial fixation. This structure has no small, continuous thread gaps, which fundamentally eliminates the space for chemical residue and crystal growth. When replacing the filter element, only a small reverse rotation is needed to release the lock and pull the filter element seat out vertically. The whole process is labor-saving and fast, completely avoiding the difficulty of disassembly caused by crystal lock-up and the damage to the filter element seat and filter barrel caused by violent disassembly, which significantly reduces maintenance costs and the frequency of component replacement.

[0014] (2) The locking structure of this utility model consists of a simple limiting block, mounting block, and support base, which is convenient to process and manufacture and has high reliability. At the same time, the tight engagement between the sealing groove at the bottom of the filter element seat and the sealing edge at the top of the sealing guide hood, combined with the sealing ring between the sealing guide hood and the outlet, forms multiple sealing defenses. This design enables quick assembly and disassembly while ensuring effective isolation and sealing of the inlet and outlet channels of the filter cartridge under high-pressure working conditions. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model 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 the content of the embodiments of this utility model and these drawings without creative effort.

[0016] Figure 1 This invention provides a schematic diagram of the structure of a filter barrel for quick replacement of filter elements to prevent crystallization, as shown in this embodiment of the invention. Figure 2 This is a cross-sectional structural diagram of a filter barrel for quick replacement of filter elements to prevent crystallization, as provided in an embodiment of the present invention. Figure 3 This is a cross-sectional structural diagram of the filter barrel body, filter element seat, and sealing guide cover according to an embodiment of the present utility model; Figure 4 for Figure 3 A partial breakdown diagram.

[0017] In the picture: 1. Filter barrel body; 11. Inlet; 12. Outlet; 2. Filter element holder; 21. Mounting block; 22. Sealing groove; 23. Mounting hole; 24. Flow gap; 3. Sealing guide cover; 31. Sealing edge; 4. Filter element; 5. Filter barrel cover; 6. Support base; 7. Limiting block; 71. Mounting groove; 72. Insertion gap; 8. Sealing ring. Detailed Implementation

[0018] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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 of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0022] like Figures 1 to 4 As shown, this utility model embodiment provides a filter canister for quick replacement of the anti-crystallization filter element 4. The filter canister is particularly suitable for filtering high-concentration, easily crystallizing chemical solutions (such as high-concentration acid and alkali solutions, saturated salt solutions) in industries such as fine chemicals and electroplating, aiming to solve the problem of traditional threaded filter element seats 2 being difficult to disassemble and easily damaged due to crystallization.

[0023] like Figure 1 and Figure 2 As shown, the filter barrel mainly includes a filter barrel body 1, a filter element seat 2, a sealing guide shroud 3, a filter element 4, and a filter barrel cover 5. The barrel body is typically cylindrical, open at the top and closed at the bottom. The filter barrel cover 5 is sealed to the top of the barrel body using conventional methods such as flanges, clamps, or bolts, forming a closed filter chamber.

[0024] like Figures 2 to 4As shown, a support base 6 is fixedly installed on the inner wall of the filter barrel 1 near its bottom. The support base 6 can be annular, and in this embodiment, it consists of individual support bases 6 evenly spaced along the circumference of the barrel wall. Above the support base 6, at least two sets of limiting blocks 7 are fixedly installed at equal intervals along the circumference of the inner wall of the barrel. These limiting blocks 7 and the support base 6 below form a ring of intermittent mounting grooves 71. An insertion gap 72 is naturally formed between two adjacent limiting blocks 7. Correspondingly, mounting blocks 21 matching the number and position of the limiting blocks 7 are evenly spaced along the circumference on the outer circumferential surface of the filter element seat 2. A sealing groove 22 is opened at the bottom of the filter element seat 2 near the outer circumference. Multiple mounting holes 23 are opened on the disc of the filter element seat 2 for detachably installing multiple cylindrical filter elements 4 (such as PP melt-blown filter elements 4, wound filter elements 4, etc.). The lower end of the filter element 4 is fixed to the mounting hole 23 by means of nuts or clips, while its upper end is suspended.

[0025] The sealing guide hood 3 is fixedly installed on the bottom surface inside the barrel, directly above the outlet 12. The sealing guide hood 3 is generally funnel-shaped, narrower at the bottom and wider at the top, with a ring-shaped sealing edge 31 formed at its top edge. A sealing ring 8 is provided between the sealing guide hood 3 and the outlet 12 to ensure a static seal at this point. When the filter element holder 2 is installed in place, its bottom sealing groove 22 will precisely engage and press against the sealing edge 31 at the top of the sealing guide hood 3, forming a reliable dynamic sealing interface, thereby clearly dividing the internal cavity of the filter barrel into the area of ​​the liquid to be filtered and the area of ​​the filtered liquid.

[0026] The bottom of the filter barrel 1 has an inlet 11 and an outlet 12. In this embodiment, the inlet 11 is preferably located at the center of the bottom, while the outlet 12 is located to its side. A flow gap 24 is formed between the mounting blocks 21 on adjacent filter cartridge seats 2. The flow gap 24 is directly connected to the inlet 11 located at the center, forming an inflow channel for the liquid to be filtered.

[0027] The installation process of this utility model embodiment is as follows: Align the filter element holder 2 containing the filter element 4 with the filter barrel body 1. Align the mounting block 21 on the outer circumference of the filter element holder 2 with the insertion gap 72 on the inner wall of the filter barrel body 1. Then, place the entire filter element holder 2 (along with the filter element 4) vertically downward into the barrel body along the insertion gap 72. Then, rotate the filter element holder 2 clockwise (or counterclockwise) by a small angle, so that the mounting block 21 moves from the insertion gap 72 into the mounting slot 71. Due to the obstruction of the limiting block 7, the mounting block 21 is restricted within the mounting slot 71 and cannot move upward, thereby achieving axial locking of the filter element holder 2. During this process, the sealing slot 22 at the bottom of the filter element holder 2 also simultaneously engages and presses against the sealing edge 31 of the sealing guide cover 3, completing the seal. Finally, cover the filter barrel with the barrel cover 5 and lock it.

[0028] During operation, the easily crystallizing chemical solution to be filtered is pumped in through the inlet 11 at the bottom and flows upward through the flow gap 24 into the chamber formed by the filter barrel body 1, the filter barrel cover 5, and the filter element seat 2. Under pressure, the solution penetrates the filter element 4 from the outside in, impurities are trapped, and the clean solution enters the internal cavity of the filter element 4 and the inner cavity of the sealed guide shroud 3 below, finally collecting and flowing out from the outlet 12, completing the filtration cycle.

[0029] When it is necessary to replace filter element 4 or perform cleaning, first open the lid. Then, rotate the filter element holder 2 in the opposite direction by the same small angle, so that the mounting block 21 rotates back from the mounting slot 71 to the insertion gap 72. At this time, the axial locking of the filter element holder 2 is released. The operator can then lift the filter element holder 2 vertically upwards to remove it, along with all the old filter elements 4, from the container. The entire disassembly process requires no forceful twisting and is easy and effortless.

[0030] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A filter cartridge with anti-crystallization and quick filter element replacement, characterized in that, include: The filter barrel body has a support base near the bottom of its inner wall. Above the support base, at least two sets of limiting blocks are evenly spaced along the circumference of the inner wall. An installation groove is formed between the support base and the limiting blocks, and an insertion gap is formed between adjacent limiting blocks. The filter element holder has mounting blocks that are evenly spaced along its outer circumference and correspond to the limiting block. The filter element holder is inserted into the bottom of the inner wall of the filter barrel along the insertion gap, and then rotated so that the mounting blocks are engaged in the mounting slots.

2. The filter cartridge for quick replacement of filter element to prevent crystallization according to claim 1, characterized in that, The bottom of the filter barrel has an inlet and an outlet, with the inlet located at the center of the bottom of the filter barrel; A sealing guide hood is provided above the outlet, and the filter element seat is provided above the sealing guide hood.

3. A filter cartridge for quick replacement of filter elements to prevent crystallization, as described in claim 2, is characterized in that... The bottom of the filter element holder is provided with a sealing groove; The top of the sealing guide shroud is provided with a sealing edge, which can be inserted into the sealing groove.

4. A filter cartridge for quick replacement of filter elements to prevent crystallization according to claim 2, characterized in that, The filter element holder has several mounting holes, and several filter elements are detachably installed in the mounting holes. The mounting holes are connected to the sealed flow guide cover.

5. A filter cartridge for quick replacement of anti-crystallization filter element according to any one of claims 2 to 4, characterized in that, The sealed air shroud is shaped like a horn, narrow at the bottom and wide at the top.

6. A filter cartridge for quick replacement of filter elements to prevent crystallization, as described in claim 5, is characterized in that... A sealing ring is also provided between the sealing guide shroud and the outlet.

7. A filter cartridge for quick replacement of filter elements to prevent crystallization according to claim 2, characterized in that, A flow gap is formed between adjacent mounting blocks, and the inlet communicates with the flow gap.

8. A filter cartridge for quick replacement of filter elements to prevent crystallization according to claim 1, characterized in that, The top of the filter barrel is also provided with a filter barrel cover.

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