Filter vat device

Abstract

The utility model belongs to the related technical field of PCB (Printed Circuit Board) manufacturing equipment, and particularly relates to a filter vat device. A filter drum body is arranged in a filter barrel device, a mounting through groove is formed in the middle of the filter drum body, at least one first clamping groove is formed in the circumferential side of a groove opening of the mounting through groove, a rotating groove is formed in the outer side of the mounting through groove, and a fixing ring is rotationally arranged in the rotating groove; at least one clamping part is arranged on the peripheral side of the fixed cover; wherein the fixing part is provided with a second clamping groove and a fixing groove, the fixing ring is provided with a first rotating position and a second rotating position, the first rotating position enables the first clamping groove and the second clamping groove to be aligned, and the second rotating position enables the fixing groove to be formed in the clamping part. By means of the structure, the mode that a rotary knob in a traditional filter barrel is detached to replace the filter screen is changed, so that the mode that the filter screen and the filter barrel are detached is simplified, and the service life of equipment is prolonged.

Description

Technical Field

[0001] This utility model belongs to the technical field of PCB manufacturing equipment, and in particular relates to a filter barrel device. Background Technology

[0002] In PCB manufacturing, the horizontal line is a very common piece of equipment. It is mainly used for lamination and browning, inner and outer layer circuit production, pretreatment at each station, and cleaning at each station. The horizontal line also needs to be equipped with a filter tank. The main function of the filter tank is to filter out the chemicals and impurities in the washing tank and prevent the nozzles in the spray pipe from clogging.

[0003] In existing technologies, filter cartridges are typically disassembled by rotating a top screw rod and rotating the filter cover. This method requires both hands to turn the knobs, which makes it difficult to replace the filter screen. It also causes the threads of the equipment to wear down after prolonged use, thus reducing the equipment's lifespan. Utility Model Content

[0004] To address the aforementioned issues, this invention proposes a filter bucket device that uses a snap-fit ​​part and a snap-fit ​​groove to interlock and is fixed by rotating a retaining ring, replacing the traditional knob and thread fixing method. This simplifies the fixing process, avoids thread wear caused by prolonged knob use, and thus extends the service life of the device.

[0005] The content of this utility model is achieved through the following technical solution:

[0006] Firstly, this utility model proposes a filter barrel device, comprising:

[0007] The filter cartridge body has an installation groove in the middle, at least one first snap-fit ​​groove on the periphery of the groove opening, and a rotating groove on the outer side of the installation groove at the first snap-fit ​​groove, with a fixing ring rotatably mounted inside the rotating groove; and

[0008] A fixing cover, wherein at least one snap-fit ​​portion is provided on the periphery of the fixing cover;

[0009] The fixing ring is provided with a second snap-fit ​​groove and a fixing groove. The fixing groove is located inside the fixing ring. The fixing ring is provided with a first rotation position and a second rotation position. The first rotation position is used to align the first snap-fit ​​groove and the second snap-fit ​​groove. The second rotation position is used to set the fixing groove on the snap-fit ​​part.

[0010] By incorporating a filter cartridge body in a filter cartridge device, a mounting groove is provided in the middle of the filter cartridge body, at least one first snap-fit ​​groove is provided around the opening of the mounting groove, and a rotating groove is provided on the outer side of the mounting groove, within which a fixing ring is rotatably mounted; and a fixing cover is provided, with at least one snap-fit ​​part around its periphery; wherein the fixing part is provided with a second snap-fit ​​groove and a fixing groove, and the fixing ring is provided with a first rotating position and a second rotating position, the first rotating position aligning the first snap-fit ​​groove and the second snap-fit ​​groove, and the second rotating position aligning the fixing groove on the snap-fit ​​part. This structure simplifies the removal and replacement of the filter screen and filter cartridge by eliminating the traditional method of disassembling and replacing the filter screen using a knob, and also increases the service life of the equipment.

[0011] In some embodiments, a rotating shaft is rotatably provided in the rotating groove, and a rotating sidewall is provided on the side of the fixed ring away from the filter cartridge body. A connecting groove is provided on the inner side of the rotating sidewall, and the connecting groove is rotatably fixed on the rotating shaft so that the rotating sidewall can be rotated to rotate the fixed ring.

[0012] The rotating shaft and connecting groove are connected by rotation, thereby driving the rotation of the fixing ring through the rotating side wall, thus achieving the fixing and disassembly separation of the fixing cover and the filter cartridge body.

[0013] In some embodiments, the rotating sidewall extends outward with an extension portion, and a fixing hole is provided at the end of the extension portion. A push rod is provided on the fixing hole to push the push rod to rotate the fixing ring.

[0014] The extension and the push rod provided in the extension allow for the rotation of the fixing ring by pushing, thereby simplifying the fixing and disassembly of the fixing cover and the filter cartridge body.

[0015] In some embodiments, a first arc surface is provided on both sides of the second snap-fit ​​groove, and a second arc surface is provided on both sides of the fixing groove.

[0016] By setting a first arc surface and a second arc surface, the snap-fit ​​part can be easily disengaged and snapped into the second snap-fit ​​groove and the fixing groove.

[0017] In some embodiments, the snap-fit ​​part is cylindrical and is rotatably disposed on the periphery of the fixed cover.

[0018] By setting the snap-fit ​​part as a rotatable cylinder, the friction between the snap-fit ​​part and the retaining ring is reduced, making it easier for the retaining ring to rotate.

[0019] In some embodiments, an elastic element is provided within the fixing groove.

[0020] The elastic element prevents the snap-fit ​​part from being subjected to stress pressure and wear within the fixing groove.

[0021] In some embodiments, a filter section is connected below the fixed cover. The filter section is disposed in the mounting groove and has a liquid flow channel. The filter section includes a liquid outlet section and a liquid inlet section, which are connected from top to bottom. The liquid outlet section is provided with a liquid outlet, and the liquid inlet section is provided with a liquid inlet.

[0022] The filtration section is used to filter the medicines in the equipment.

[0023] In some embodiments, a first sealing part is provided between the liquid outlet and the fixed cover, and a second sealing part is provided between the liquid outlet and the liquid inlet, and a sealing ring is fitted on both the first sealing part and the second sealing part.

[0024] The first and second sealing parts isolate the liquid from the liquid outlet, liquid inlet, and fixed cover, preventing contamination caused by liquid splashing.

[0025] In some embodiments, an elastic ring is provided on the outer periphery of the first sealing part.

[0026] The elastic ring prevents damage to the filter cartridge body caused by stress when the fixing cover is pressed onto the filter cartridge body.

[0027] In some embodiments, the fixed cover is provided with a lifting part.

[0028] The lifting mechanism makes it easy to lift the fixed cover for replacement and insertion of the filter screen during disassembly and separation.

[0029] The beneficial effects of this utility model's filter barrel device are:

[0030] By incorporating a filter cartridge body into the filter cartridge assembly, a mounting groove is provided in the middle of the filter cartridge body, at least one first snap-fit ​​groove is provided around the opening of the mounting groove, and a rotating groove is provided on the outer side of the mounting groove, within which a fixing ring is rotatably mounted; and a fixing cover is provided, with at least one snap-fit ​​part around its periphery; wherein the fixing part is provided with a second snap-fit ​​groove and a fixing recess, the fixing recess being disposed within the fixing ring, the first snap-fit ​​groove and the second snap-fit ​​groove being aligned so that the fixing part is disposed within the fixing ring, and the fixing ring rotating so that the fixing recess is disposed on the snap-fit ​​part. This structure simplifies the disassembly of the filter screen and filter cartridge, eliminating the traditional method of removing and replacing the filter screen using a knob, and also increases the service life of the equipment. Attached Figure Description

[0031] Figure 1 This is a perspective view of a filter barrel device according to the present invention;

[0032] Figure 2 This is a side view of the fixing ring of a filter barrel device according to the present invention;

[0033] Figure 3This is a perspective view of the filter section of a filter barrel device according to the present invention;

[0034] Figure 4 This is a simplified schematic diagram of the principle of a filter barrel device of this utility model when the fixed ring rotates to the first rotation position;

[0035] Figure 5 This is a simplified schematic diagram of the principle of a filter barrel device of this utility model when the fixed ring rotates to the second rotation position.

[0036] Figure label:

[0037] 1. Filter cartridge body; 11. Mounting groove; 12. First snap-fit ​​groove; 13. Fixing ring; 131. Second snap-fit ​​groove; 132. Fixing groove; 133. Rotating side wall; 134. Extension; 135. Push rod; 136. Connecting groove; 137. Fixing hole; X1. First rotating position; X2. Second rotating position;

[0038] 2. Fixed cover; 21. Snap-fit ​​part; 22. Lifting part;

[0039] 3. Filter section; 31. Liquid outlet section; 311. Liquid outlet; 32. Liquid inlet section; 321. Liquid inlet; 33. First sealing section; 34. Second sealing section. Detailed implementation method:

[0040] It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of this utility model can be combined with each other. The detailed description in the specific embodiments should be understood as an explanation of the spirit of this utility model and should not be regarded as an improper limitation of this utility model.

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the specific technical solutions of this utility model will be further described in detail below with reference to the accompanying drawings of the embodiments of this utility model. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0042] In the embodiments of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0043] Furthermore, in this embodiment of the invention, directional terms such as "upper," "lower," "left," and "right" are defined relative to the positions of the components shown in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the position of the components in the accompanying drawings.

[0044] In the embodiments of this utility model, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0045] In embodiments of this invention, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion. Without further limitation, 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 that element.

[0046] In this embodiment of the invention, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in this embodiment of the invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant information in a specific manner.

[0047] Example 1:

[0048] like Figure 1 As shown, this embodiment proposes a filter barrel device, including:

[0049] The filter cartridge body 1 has a mounting groove 11 in the middle. At least one first engaging groove 12 is provided around the opening of the mounting groove 11. A rotating groove (not shown in the figure) is provided on the outer side of the mounting groove 11 at the first engaging groove 12. A fixing ring 13 is rotatably mounted within the rotating groove.

[0050] The fixed cover 2 has at least one snap-fit ​​part 21 on its periphery;

[0051] The fixing ring 13 is provided with a second snap-fit ​​groove 131 and a fixing groove 132. The fixing groove 132 is disposed inside the fixing ring 13. The fixing ring 13 is provided with a first rotation position X1 and a second rotation position X2. The first rotation position X1 is used to align the first snap-fit ​​groove 12 and the second snap-fit ​​groove 131. The second rotation position X2 is used to place the fixing groove 132 on the snap-fit ​​part 21.

[0052] Specifically, the filter cartridge device includes a filter cartridge body 1, which more specifically comprises an upper part and a lower part, and the upper and lower parts are fixedly connected by fixing screws. The filter cartridge body 1 has an installation groove 11 for installing the filter screen, specifically a groove at the top of the filter cartridge body 1, used for installing and removing the filter screen from the installation groove 11. At least several first snap-fit ​​grooves 12 are provided around the opening of the installation groove 11, more specifically two. The filter cartridge body 1 is typically cylindrical, and the opening of the installation groove 11 is circular. The two first snap-fit ​​grooves 12 are typically located around the opening and opposite each other at opposite ends of a circular diameter centered on the opening, thus achieving stability when snapping and fixing the cover 2. A rotating groove is provided at the first snap-fit ​​groove 12 outside the installation groove 11, such that the first snap-fit ​​groove 12 is on the circumference of the rotating groove, which is more specifically circular. A fixing ring 13 is rotatably installed within the rotating groove, the diameter of which is the same as the inner diameter of the rotating groove. Meanwhile, the fixed cover 2 is used to seal the opening of the mounting groove 11, thereby preventing liquid splashing and overflow. A filter screen is typically installed at the bottom of the fixed cover 2 so that the filter screen can be installed within the mounting groove 11 and removed by pulling off the fixed cover 2. The fixed cover 2 is provided with a snap-fit ​​part 21 that aligns with the first snap-fit ​​groove 12. The snap-fit ​​part 21 can be disposed within the first snap-fit ​​groove 12, thereby allowing the fixed cover 2 to be positioned at the opening of the mounting groove 11.

[0053] like Figure 4 , Figure 5As shown, the fixing ring 13 is provided with a second engaging groove 131 and a fixing recess 132. More specifically, the second engaging groove 131 and the fixing recess 132 are located on the periphery of the fixing ring 13, and the fixing ring 13 is provided with a first rotation position X1 and a second rotation position X2. The first rotation position X1 aligns the first engaging groove 12 and the second engaging groove 131, and the second rotation position X2 allows the fixing recess 132 to be located on the engaging part 21. The fixing recess 132 is located inside the fixing ring 13, more specifically on the inner ring. The fixing ring 13 is provided with a first rotation position X1 and a second rotation position X2 so that when the fixing ring 13 is rotated, the first engaging groove 12 can be aligned with the second engaging groove 131 at the first rotation position X1, and with the fixing recess 132 at the second rotation position X2. It should be noted that when the first snap-fit ​​groove 12 and the fixing groove 132 are aligned, the snap-fit ​​part 21 is isolated from the first snap-fit ​​groove 12 by the fixing ring 13, and the fixing ring 13 prevents the snap-fit ​​part 21 from detaching from the first snap-fit ​​groove 12. The fixing groove 132 also prevents the snap-fit ​​part 21 from detaching from the first snap-fit ​​groove 12 due to the relative rotation of the fixing ring 13 and the rotating groove during filtration. In actual use, when installing the filter screen, the fixing ring 13 is rotated to the first rotation position X1, so that the snap-fit ​​part 21 can be positioned at the bottom of the first snap-fit ​​groove 12 and within the inner ring of the fixing ring 13 through the second snap-fit ​​groove 131 and the first snap-fit ​​groove 12. When the fixing ring 13 is rotated, the part of the fixing ring 13 other than the second snap-fit ​​groove 131 rotates above the snap-fit ​​part 21. Thus, when the fixing ring 13 is not in the first rotation position X1, the inner ring of the fixing ring 13 and the first snap-fit ​​groove 12 form a limiting space to limit the movement of the snap-fit ​​part 21. During fixing, the fixing ring 13 is rotated to the second fixing position, so that the fixing groove 132 and the first snap-fit ​​groove 12 form a new limiting space to prevent the snap-fit ​​part 21 from moving. In some more specific embodiments, the rotation angle between the first rotation position X1 and the second rotation position X2 is 45°, and the fixing and separation of the fixing cover 2 can be achieved by rotating at a small angle.

[0054] Furthermore, when the snap-fit ​​part 21 is set in the first snap-fit ​​groove 12, it is not completely abutting the bottom of the first snap-fit ​​groove 12 without being pressed. However, by rotating the fixing ring 13, the fixing ring 13 can also press the snap-fit ​​part 21 to the bottom of the first snap-fit ​​groove 12 through stress accumulation. This allows the fixing cover 2 to be pressed on the groove opening and receive a certain stress pressing, which can also increase the sealing performance inside the filter cartridge body 1.

[0055] The filter cartridge device includes a filter cartridge body 1 with a mounting groove 11 in the middle. At least one first snap-fit ​​groove 12 is provided around the opening of the mounting groove 11, and a rotating groove is provided on the outer side of the mounting groove 11. A fixing ring 13 is rotatably mounted within the rotating groove. A fixing cover 2 is also included, with at least one snap-fit ​​portion 21 around its periphery. The fixing portion includes a second snap-fit ​​groove 131 and a fixing groove 132. The fixing ring 13 has a first rotation position X1 and a second rotation position X2. The first rotation position X1 aligns the first snap-fit ​​groove 12 and the second snap-fit ​​groove 131, and the second rotation position X2 positions the fixing groove 132 on the snap-fit ​​portion 21. This structure simplifies the removal and replacement of the filter screen and filter cartridge compared to the traditional method of disassembling and replacing the filter screen using a knob, thus increasing the lifespan of the equipment.

[0056] Example 2:

[0057] Please refer to this again. Figure 1 and combined with, for example Figures 2-3 As shown, this embodiment further explains and optimizes the structure proposed in Embodiment 1:

[0058] In some embodiments, a rotating shaft (not shown in the figure) is rotatably disposed within the rotating groove. A rotating sidewall 133 is provided on the side of the fixing ring 13 away from the filter cartridge body. A connecting groove 136 is provided on the inner side of the rotating sidewall 133, and the connecting groove 136 is fixed to the rotating shaft. Rotating the rotating sidewall 133 rotates the fixing ring 13. Specifically, a rotating shaft is rotatably disposed within the center of the rotating groove, and one end of the rotating shaft is limited within the rotating groove, allowing the rotating shaft to rotate on one side of the filter cartridge body. The rotating sidewall 13 is integrally disposed on the side of the fixing ring 13 away from the filter cartridge body. A connecting groove 136 is provided on the inner side of the rotating sidewall 133, which can be sleeved onto the rotating shaft. The rotating sidewall 133 is fixed to the rotating shaft from the outside by screws. This ensures that the fixing ring 13 can rotate within the rotating groove without detaching from it. Through the rotatable connection of the rotating shaft and the connecting groove 136, the rotating sidewall 133 drives the rotation of the fixing ring 13, thereby achieving the fixing and disassembly separation of the fixing cover 2 and the filter cartridge body 1.

[0059] In some embodiments, the rotating sidewall 133 extends outward with an extension portion 134. A fixing hole 137 is provided at the end of the extension portion 134, and a push rod 135 is provided on the fixing hole 137 to push the push rod 135 to rotate the fixing ring 13. Specifically, the rotating sidewall 133 extends outward with an extension portion 134, which functions similarly to a handle, allowing the extension portion 134 or its structure to be pushed, thereby driving the fixing ring 13 to rotate. A fixing hole 137 is provided at the free end of the extension portion 134, which is used to mount the push rod 135, making it easier to push manually. More specifically, fixing rings 13 and extension portions 134 are typically provided on both sides, with the fixing holes 137 on both sides of the extension portion 134 aligned to fix the two ends of the push rod 135, thus more stably pushing the rotation of the fixing ring 13 and making the separation of the fixing cover 2 and the filter cartridge body 1 easier. The extension 134 and the push rod 135 provided in the extension 134 are used to rotate the fixing ring 13 by pushing, thereby simplifying the fixing and disassembly of the fixing cover 2 and the filter cartridge body 1.

[0060] In some embodiments, the second locking groove 131 has first arc surfaces on both sides, and the fixing groove 132 has second arc surfaces on both sides. Specifically, by providing first arc surfaces on both sides of the second locking groove 131, excessive mechanical stress is avoided between the locking part 21 and the fixing ring 13 when the fixing ring 13 is in the first rotation position X1 and begins to rotate, resulting in smoother rotation and preventing wear on both sides of the device in the second locking groove 131. The effect of the second arc surfaces on both sides of the fixing groove 132 is the same as that of the first arc surfaces, and it also makes it easier for the locking part 21 to disengage from the fixing groove 132. By providing the first and second arc surfaces, the locking part 21 can be easily disengaged and engaged in the second locking groove 131 and the fixing groove 132.

[0061] In some preferred embodiments, the locking portion 21 is a cylinder and is rotatably disposed around the periphery of the fixing cover 2. Specifically, by using a rotatable cylinder, the friction between the fixing ring 13 and the locking portion 21 is reduced when the fixing ring 13 rotates, and rotation is easier, thereby making the disassembly and installation of the fixing cover 2 more effortless and convenient. By setting the locking portion 21 as a rotatable cylinder, the friction between the locking portion 21 and the fixing ring 13 is reduced, facilitating the rotation of the fixing ring 13.

[0062] In some embodiments, an elastic element is provided within the fixing groove 132. Specifically, the elastic element can enclose the entire fixing groove 132, thereby preventing excessive stress on the engaging portion 21 within the fixing groove 132, which could cause wear between the first engaging groove 12 and the engaging portion 21. The elastic element prevents wear caused by stress pressure on the engaging portion 21 within the fixing groove 132.

[0063] In some embodiments, a filter section 3 is connected below the fixed cover 2. The filter section 3 is disposed within the mounting groove 11 and has a liquid flow channel. The filter section 3 includes an outlet section 31 and an inlet section 32, which are connected from top to bottom. The outlet section 31 has an outlet 311, and the inlet section 32 has an inlet 321. Specifically, the filter section 3 can filter liquids. The liquid is input through the inlet 321 through the liquid flow channel and discharged through the outlet 311 after filtration. A filter screen is provided at the inlet 321. Liquid filtered by the filter screen enters the inlet 321 by hydraulic pressure, is filtered by the filter screen, flows through the liquid flow channel to the outlet 311, and is discharged through the outlet 311. The filter section 3 is used to filter pharmaceuticals in the equipment.

[0064] In some embodiments, a first sealing part 33 is provided between the liquid outlet 31 and the fixed cover 2, and a second sealing part 34 is provided between the liquid outlet 31 and the liquid inlet 32. Both the first sealing part 33 and the second sealing part 34 are fitted with sealing rings. Specifically, the first sealing part 33 isolates the liquid outlet 31 and the liquid inlet 32, preventing cross-contamination between unfiltered and filtered liquids. The second sealing part 34 prevents accidental leakage of liquid from the fixed cover 2. The first sealing part 33 and the second sealing part 34 achieve liquid isolation between the liquid outlet 31, the liquid inlet 32, and the fixed cover 2, preventing contamination caused by liquid splashing.

[0065] Example 3:

[0066] Please refer to the following: Figure 1 As shown, based on Embodiment 2, this embodiment further explains and optimizes some structures of the fixed cover 2:

[0067] In some embodiments, an elastic ring is provided on the outer periphery of the first sealing part 33. Specifically, the fixing cover 2 is also provided with a fixing step at the groove opening, and the elastic ring on the fixing cover 2 abuts against the fixing step. The filter part 3 connected to the fixing cover 2 extends into the mounting groove 11. The elastic ring prevents damage to the filter body 1 caused by stress when the fixing cover 2 is pressed against the filter cartridge body 1, and more importantly, against the fixing step.

[0068] In some embodiments, the fixed cover 2 is provided with a lifting part 22. Specifically, it can be a handle structure or a mushroom-shaped structure. By holding the umbrella-shaped structure, the fixed cover 2 can be lifted and the filter screen can be taken out into the installation channel 11. The lifting part 22 makes it convenient to lift the fixed cover 2 for replacement and insertion of the filter screen when disassembling and separating it.

[0069] The serial numbers of the utility model embodiments are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are only preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent device or equivalent process transformation made based on the content of this utility model specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this utility model.

Claims

1. A filter cartridge device, characterized in that, include: A filter cartridge body (1) has an installation groove (11) in the middle, and at least one first snap-fit ​​groove (12) is provided around the opening of the installation groove (11). A rotating groove is provided on the outside of the installation groove (11) at the first snap-fit ​​groove (12), and a fixing ring (13) is rotatably disposed in the rotating groove; and A fixed cover (2) is provided with at least one snap-fit ​​part (21) on its periphery; The fixing ring (13) is provided with a second snap-fit ​​groove (131) and a fixing groove (132). The fixing groove (132) is disposed in the fixing ring (13). The fixing ring (13) is provided with a first rotation position (X1) and a second rotation position (X2). The first rotation position (X1) is used to align the first snap-fit ​​groove (12) and the second snap-fit ​​groove (131). The second rotation position (X2) is used to place the fixing groove (132) on the snap-fit ​​part (21).

2. The filter barrel device according to claim 1, characterized in that, A rotating shaft is rotatably arranged in the rotating groove. A rotating sidewall (133) is provided on the side of the fixed ring (13) away from the filter cartridge body. A connecting groove (136) is provided on the inner side of the rotating sidewall (133). The connecting groove (136) is fixed on the rotating shaft so that the rotating sidewall (133) is rotated, thereby rotating the fixed ring (13).

3. The filter barrel device according to claim 2, characterized in that, The rotating sidewall (133) extends outward with an extension (134), and a fixing hole (137) is provided at the end of the extension (134). A push rod (135) is provided on the fixing hole (137) to push the push rod (135) to rotate the fixing ring (13).

4. The filter barrel device according to claim 1, characterized in that, The second snap-fit ​​groove (131) has a first arc surface on both sides, and the fixing groove (132) has a second arc surface on both sides.

5. The filter cartridge device according to claim 4, characterized in that, The snap-fit ​​part (21) is a cylinder and is rotatably disposed on the periphery of the fixed cover (2).

6. The filter cartridge device according to claim 1, characterized in that, An elastic element is provided inside the fixing groove (132).

7. The filter barrel device according to claim 1, characterized in that, A filter section (3) is connected below the fixed cover (2). The filter section (3) is disposed in the mounting groove (11). A liquid flow channel is provided in the filter section (3). The filter section (3) includes an outlet section (31) and an inlet section (32). The outlet section (31) and the inlet section (32) are connected from top to bottom. The outlet section (31) is provided with an outlet (311), and the inlet section (32) is provided with an inlet (321).

8. The filter cartridge device according to claim 7, characterized in that, A first sealing part (33) is provided between the liquid outlet (31) and the fixed cover (2), and a second sealing part (34) is provided between the liquid outlet (31) and the liquid inlet (32). Both the first sealing part (33) and the second sealing part (34) are fitted with sealing rings.

9. The filter barrel device according to claim 8, characterized in that, An elastic ring is provided on the outer periphery of the first sealing part (33).

10. The filter barrel device according to claim 1, characterized in that, The fixed cover (2) is provided with a lifting part (22).

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