Filter convenient to clean

Abstract

The invention discloses a convenient-to-clean filter, which belongs to the technical field of gas desulfurization and comprises a mounting shell assembly, an exhaust assembly, an automatic cleaning assembly and a cleaning plate, the exhaust assembly is detachably connected to the top end of the fixed shell, the automatic cleaning assembly is arranged in the fixed shell, and the cleaning plate is in linkage with the automatic cleaning assembly and abuts against the upper surface of the filter screen. After a follow-up gear is meshed with a driving gear, a driving motor drives the cleaning plate to stably move along a guide rod and a limiting rod through a two-way screw, the cleaning plate always abuts against the surface of the filter screen, reciprocating cleaning is achieved through the two-way thread design, the impurity removal rate is increased, and the cleaning efficiency is improved. No cleaning blind area exists; and the cleaning process does not need to be manually disassembled and can be synchronously completed in the filtering process, shutdown cleaning is avoided, the production interruption cost is greatly reduced, and the device is particularly suitable for continuous production scenes.

Description

Technical Field

[0001] This invention belongs to the field of gas desulfurization technology, specifically referring to an easy-to-clean filter. Background Technology

[0002] In industrial production, water treatment, desulfurization, and denitrification, filters are core impurity separation devices, and their operational stability and ease of cleaning directly affect overall production efficiency. During long-term use, solid impurities generated during desulfurization can clog the filter screen, leading to decreased permeability and consequently affecting filtration efficiency. Furthermore, the cleaning design of traditional filters has several shortcomings, the main problems of which are as follows:

[0003] 1. Traditional filters lack automatic cleaning functions. After the filter screen accumulates impurities, manual shutdown and disassembly of the equipment are required for cleaning or replacement. This not only interrupts the production process but also increases the labor intensity of the staff. Especially in continuous production scenarios, frequent shutdowns for cleaning will lead to a significant decrease in production efficiency and a significant increase in operation and maintenance costs, making it difficult to meet the needs of modern continuous production.

[0004] 2. During manual cleaning, improper operation can easily lead to localized residue on the filter screen, creating "cleaning blind spots." Furthermore, some viscous impurities are difficult to remove completely, and these residues can accelerate filter screen clogging and shorten its lifespan. Additionally, during manual disassembly and installation, the filter screen is easily damaged by collisions and compression, further increasing the frequency and cost of filter screen replacement.

[0005] In summary, the industry urgently needs a filter with automatic cleaning function, accurate blockage warning, uniform fluid delivery, and synergistic adaptation between cleaning and filtration. Summary of the Invention

[0006] In view of the above situation and to overcome the shortcomings of the prior art, the present invention provides an easy-to-clean filter, which effectively solves the problems currently on the market.

[0007] The technical solution adopted by the present invention is as follows: The present invention proposes an easy-to-clean filter, including a housing assembly, an exhaust assembly, an automatic cleaning assembly, and a cleaning plate;

[0008] The exhaust assembly is detachably connected to the top of the fixed housing, the automatic cleaning assembly is located inside the fixed housing, and the cleaning plate is linked with the automatic cleaning assembly and abuts against the surface of the filter screen.

[0009] Furthermore, the mounting housing assembly includes a fixed housing, inside which symmetrically arranged diversion pipes penetrate and are fixedly connected to the fixed housing; symmetrically arranged on the diversion pipes are inlet pipes, which penetrate and are fixedly connected to the diversion pipes; symmetrically arranged on the inner surface of the fixed housing are lifting grooves, in which a filter screen is slidably connected, and a support spring is also provided in the lifting groove, one end of which is fixedly connected to the fixed housing, and the other end of which is fixedly connected to the filter screen; a drive motor is fixedly mounted on the outer surface of the fixed housing, and an output shaft is fixedly connected to the output end of the drive motor, which penetrates and is rotatably connected to the fixed housing, with a drive gear fixedly connected to the end of the output shaft away from the drive motor.

[0010] Furthermore, the exhaust assembly includes a mounting housing, which is detachably connected to the top of a fixed housing; a fan is provided inside the mounting housing, and a rotating disk is fixedly connected to the fan's rotating shaft; push blocks are evenly distributed on the rotating disk, and the push blocks are slidably connected to the rotating disk; a return spring is connected between the rotating disk and the push blocks, with one end of the return spring fixedly connected to the rotating disk and the other end fixedly connected to the push block; the end of the push block away from the rotating disk is arc-shaped.

[0011] Furthermore, the automatic cleaning component includes a sliding plate, which is disposed inside a fixed housing; guide rods are symmetrically arranged on the inner surface of the fixed housing, the guide rods are fixedly connected to the fixed housing, and the guide rods pass through and slidably connect to the sliding plate; a telescopic spring is sleeved on the guide rod, one end of the telescopic spring is fixedly connected to the fixed housing, and the other end is fixedly connected to the sliding plate; connecting rods are symmetrically arranged on the telescopic spring, and the connecting rods are fixedly connected to the telescopic spring;

[0012] A key shaft is rotatably connected to the inner surface of the fixed housing. A bidirectional screw is fixedly connected to one end of the key shaft, and a follower gear is slidably connected to the key shaft. Symmetrical mating grooves are opened on the follower gears, and the end of the connecting rod away from the telescopic spring is slidably connected to the mating groove. A limit rod is also fixedly connected to the inner surface of the fixed housing, and a sliding plate is slidably connected to the limit rod.

[0013] Furthermore, the end of the push block away from the rotating disk abuts against the outer surface of the sliding plate, and the follower gear can mesh with or disengage from the drive gear; when the follower gear meshes with the drive gear, the drive motor can drive the key shaft and the bidirectional screw to rotate through the drive gear and the follower gear.

[0014] Furthermore, the cleaning plate is threadedly connected to a bidirectional screw, and the cleaning plate is slidably connected to a guide rod; when the bidirectional screw rotates, the cleaning plate can reciprocate linearly along the axial direction of the guide rod, and the cleaning plate always abuts against the surface of the filter screen.

[0015] Furthermore, both the diversion pipe and the inlet pipe have symmetrical structures, and the axis of the diversion pipe is parallel to the axis of the fixed outer casing, while the axis of the inlet pipe is perpendicular to the axis of the diversion pipe.

[0016] Furthermore, the follower gear and the key shaft are connected by a key to achieve synchronous rotation, and the follower gear can slide along the axial direction of the key shaft.

[0017] Furthermore, when the gas is conveyed upward through the fixed casing and flows through the fan, the gas can drive the fan to rotate, which in turn drives the rotating disk and the push block to rotate synchronously; the displacement of the push block changes with the speed of the fan.

[0018] Furthermore, when the fan speed decreases, the push block slides towards the center of the rotating disk under the action of the return spring, causing the sliding plate to move and making the follower gear mesh with the drive gear; when the fan speed increases, the push block overcomes the elastic force of the return spring and slides outward, causing the sliding plate to move in the opposite direction and making the follower gear separate from the drive gear.

[0019] The beneficial effects achieved by the present invention using the above structure are as follows:

[0020] (1) The automatic cleaning components and cleaning plate of the device form a collaborative cleaning mechanism: after the follower gear meshes with the drive gear, the drive motor drives the cleaning plate to move smoothly along the guide rod and limit rod through the bidirectional screw. The cleaning plate always abuts against the surface of the filter screen. The bidirectional thread design realizes reciprocating cleaning, which improves the impurity removal rate and eliminates cleaning blind spots. Moreover, the cleaning process does not require manual disassembly of the equipment and can be completed simultaneously during the filtration process, avoiding downtime for cleaning and greatly reducing production interruption costs. It is especially suitable for continuous production scenarios.

[0021] (2) The cleaning action can be started and stopped on demand by linking the exhaust assembly and the automatic cleaning assembly: When the filter screen is not clogged, the flow rate of the filter fluid is large, the gas after desulfurization drives the fan to rotate at high speed, the push block moves outward, and drives the sliding plate to separate the follower gear from the drive gear, and the cleaning system stops running; when the filter screen is clogged, the flow rate of the fluid decreases, the fan speed decreases, the push block retracts under the action of the reset spring, the follower gear meshes with the drive gear, and the cleaning system starts automatically. This design avoids ineffective energy consumption and realizes dynamic adaptation of "cleaning when clogged and stopping when unobstructed".

[0022] (3) The device adopts a symmetrical design of the diversion pipe and the inlet pipe. After the fluid is introduced through the inlet pipe, it is evenly distributed to the inside of the fixed shell through the diversion pipe, avoiding the fluid from concentrating and impacting the local area of ​​the filter screen, and reducing the stress damage to the filter screen. At the same time, the uniform fluid distribution improves the utilization rate of the filter screen contact area, and the impurities are evenly accumulated, which slows down the clogging speed of the filter screen. With the automatic cleaning function, the service life of the filter screen is extended, the filter screen replacement cost is greatly reduced, and the desulfurization efficiency of the gas can be improved. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of an easy-to-clean filter proposed in this invention. Figure 1 ;

[0024] Figure 2 This is a three-dimensional structural diagram of an easy-to-clean filter proposed in this invention. Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the internal structure of an easy-to-clean filter proposed in this invention;

[0026] Figure 4 This is a bottom view of an easy-to-clean filter proposed in this invention;

[0027] Figure 5 This is a cross-sectional view of an easy-to-clean filter proposed in this invention;

[0028] Figure 6 This is a cross-sectional view of the rotating disk;

[0029] Figure 7 Internal diagram of the fixed casing Figure 1 ;

[0030] Figure 8 Internal diagram of the fixed casing Figure 2 ;

[0031] Figure 9 An exploded view of part of the automatic cleaning component.

[0032] The components include: 1. Housing assembly; 101. Fixed housing; 102. Diverter pipe; 103. Inlet pipe; 104. Lifting groove; 105. Filter screen; 106. Support spring; 107. Drive motor; 108. Output shaft; 109. Drive gear; 110. Protective cover; 2. Exhaust assembly; 201. Housing assembly; 202. Fan; 203. Rotating disk; 204. Push block; 205. Return spring; 3. Automatic cleaning assembly; 301. Sliding plate; 302. Guide rod; 303. Telescopic spring; 304. Connecting rod; 305. Key shaft; 306. Bidirectional screw; 307. Follower gear; 308. Connecting groove; 309. Limiting rod; 4. Cleaning plate.

[0033] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0035] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0036] like Figures 1-9 As shown.

[0037] In some embodiments, the mounting housing 201 assembly 1 may include a fixed housing 101 for supporting components; a diversion pipe 102 symmetrically disposed inside the fixed housing 101, the diversion pipe 102 penetrating and fixedly connected to the fixed housing 101; a water inlet pipe 103 symmetrically disposed on the diversion pipe 102, the water inlet pipe 103 penetrating and fixedly connected to the diversion pipe 102; a lifting groove 104 symmetrically formed on the inner surface of the fixed housing 101; and a filter screen 105 slidably connected within the lifting groove 104, and the filter screen 105 is provided with... The lifting groove 104 is located within the lifting groove 104; a support spring 106 is located within the lifting groove 104, with one end of the support spring 106 fixedly connected to the fixed housing 101 and the other end of the support spring 106 fixedly connected to the filter screen 105; a drive motor 107 is fixedly installed on the outer surface of the fixed housing 101; an output shaft 108 is fixedly connected to the output end of the drive motor 107, and the output shaft 108 passes through and is rotatably connected to the fixed housing 101; and a drive gear 109 is fixedly connected to the end of the output shaft 108 away from the drive motor 107.

[0038] The symmetrically arranged diversion pipes 102 inside the fixed housing 101 form a stable water flow channel with the fixed housing 101 through a through and fixed connection. The water inlet pipes 103 symmetrically opened on the diversion pipes 102 serve as water input ports, which can introduce external water flow into the diversion pipes 102, and then distribute it evenly to the inside of the fixed housing 101 or subsequent related components through the diversion pipes 102, so as to realize the orderly delivery and diversion of water flow, ensure uniform water flow distribution, and avoid the impact or uneven delivery problems caused by local water flow concentration. The symmetrically opened lifting grooves 104 on the inner surface of the fixed housing 101 provide sliding installation space for the filter screen 105.

[0039] In this embodiment, both the diversion pipe 102 and the inlet pipe 103 adopt a symmetrical design and are fixedly connected through a through-hole method to ensure a firm installation. After the limestone slurry is introduced through the inlet pipe 103, it can be evenly distributed to the inside of the fixed housing 101 through the diversion pipe 102, avoiding the conveying disorder caused by excessive or insufficient water flow on one side, and ensuring the stability of subsequent operations.

[0040] In some examples, a position sensor can be installed on the bottom surface inside the lifting tank 104. When the downward displacement of the filter screen 105 exceeds a threshold, the position sensor sends a signal to an alarm, which then reminds the staff to manually clean the filter screen 105 thoroughly.

[0041] In some embodiments, the exhaust assembly 2 may include a mounting housing 201 detachably connected to the top of a fixed housing 101; a fan 202 disposed inside the mounting housing 201; a rotating disk 203 fixedly connected to the rotating shaft of the fan 202; a push block 204 evenly distributed on the rotating disk 203 and slidably connected to the rotating disk 203; and a return spring 205 fixedly connected at one end to the rotating disk 203 and at the other end to the push block 204.

[0042] The end of the push block 204 away from the rotating disk 203 is arc-shaped.

[0043] In this process, the gas is conveyed upward through the fixed housing 101. When the gas passes through the fan 202, it drives the fan 202 to rotate. During the rotation of the fan 202, the rotating disk 203 will rotate along with the fan 202. The push block 204 set on the rotating disk 203 will be displaced outward under the action of centrifugal force and overcoming the action of the return spring 205. When the gas intensity changes, the speed of the fan 202 will change, and the distance between the return spring 205 and the rotating disk 203 will also change.

[0044] In this embodiment, the fan 202 is driven by the gas flow itself, without the need for an additional motor or other power source. It fully utilizes the kinetic energy of the gas to achieve exhaust, which greatly reduces energy consumption. It is especially suitable for scenarios with continuous gas generation. Moreover, the exhaust power is automatically matched with the gas intensity. The greater the gas flow, the higher the fan speed and the stronger the exhaust efficiency. It can adapt to different gas generation conditions without manual adjustment, making it convenient to use.

[0045] In some embodiments, the automatic cleaning assembly 3 may include a sliding plate 301 disposed within a fixed housing 101; a guide rod 302 symmetrically disposed on the inner surface of the fixed housing 101, and the guide rod 302 fixedly connected to the fixed housing 101, the guide rod 302 passing through and slidably connected to the sliding plate 301; a telescopic spring 303 sleeved on the guide rod 302, one end fixedly connected to the fixed housing 101, and the other end fixedly connected to the fixed housing 101; a connecting rod 304 symmetrically disposed on the telescopic spring 303, and the connecting rod 304 fixedly connected to the telescopic spring 303; a key shaft 305 rotatably connected to the inner surface of the fixed housing 101; a bidirectional screw 306 fixedly connected at one end to the key shaft 305; a follower gear 307 slidably connected to the key shaft 305; a mating groove 308 symmetrically formed on the follower gear 307; and a limiting rod 309 fixedly connected to the inner surface of the fixed housing 101.

[0046] The end of the push block 204 away from the rotating disk 203 abuts against the outer surface of the sliding plate 301, and the follower gear 307 meshes with the drive gear 109.

[0047] The sliding plate 301, located inside the fixed housing 101, is threadedly connected to the bidirectional screw 306 on one hand and slidably connected to the guide rods 302 symmetrically arranged on the inner surface of the fixed housing 101 on the other. When the bidirectional screw 306 rotates, the threaded transmission converts the rotational power into linear motion of the sliding plate 301, and the sliding plate moves smoothly along the axial direction of the guide rods. At the same time, the sliding plate 301 is slidably connected to the limiting rod 309 on the inner surface of the fixed housing 101, so that the follower gear 307 can mesh or disengage with the drive gear 109, thereby controlling the rotation or stopping of the bidirectional screw 306.

[0048] In this embodiment, the engagement / disengagement control of the follower gear and the drive gear is achieved through the contact linkage between the push block and the sliding plate, which can flexibly start and stop cleaning according to actual needs: when the gas intensity is low, the push block pushes to engage and automatically starts cleaning; when the gas intensity is high, the engagement disengages and the cleaning stops, avoiding ineffective energy consumption and adapting to dynamic cleaning scenarios.

[0049] The device also includes a cleaning plate 4, which is threadedly connected to a bidirectional screw 306 and slidably connected to a guide rod 302. The cleaning plate 4 abuts against the upper surface of the filter screen 105.

[0050] The limestone slurry used to absorb sulfides in the desulfurization system is introduced into the device through the inlet pipe 103 symmetrically arranged on the diversion pipe 102. The diversion pipe is symmetrically distributed inside the fixed shell 101 and is fixedly connected through it, so as to evenly distribute the limestone slurry inside the fixed shell, avoid the concentrated impact of slurry on the filter screen on one side, and at the same time ensure that the contact area between the slurry and the filter screen 105 is maximized, so as to provide a stable slurry environment for subsequent impurity filtration and ensure the uniform supply of desulfurization absorbent.

[0051] In the lifting grooves 104 symmetrically opened on the inner surface of the fixed outer shell 101, the filter screen 105 is installed by sliding connection and is elastically supported at the bottom by the support spring 106. When the limestone slurry flows through the filter screen, the impurities mixed in the slurry are intercepted by the filter screen, and the pure limestone slurry enters the subsequent desulfurization reaction process. The support spring can buffer the pressure generated by the impact of slurry flow and the accumulation of impurities, avoid the filter screen from being damaged due to rigid force, and at the same time allow the filter screen to sink slightly with the amount of impurities, without affecting the normal flow of slurry.

[0052] The bottom of the lifting tank 104 is equipped with a position sensor. When the impurities intercepted on the filter screen accumulate excessively and the weight of the filter screen increases, causing the downward displacement to exceed the preset threshold, the position sensor immediately sends a signal to the alarm of the desulfurization system, reminding the staff to manually disassemble the filter screen for thorough cleaning, so as to avoid interruption of the desulfurization slurry supply due to filter screen blockage and ensure the continuous and stable operation of the desulfurization system.

[0053] The rotating disk 203, which is fixedly connected to the rotating shaft of the fan 202, rotates synchronously with the fan. The push blocks 204, which are evenly distributed on the rotating disk, are displaced outward under the action of centrifugal force, overcoming the elastic force of the return spring 205. When the sulfur-containing gas passes through the filter screen 105 normally, the fan speed increases synchronously, the centrifugal force increases, the outward displacement of the push blocks increases, and the distance between them and the rotating disk widens. The follower gear 307 does not mesh with the drive gear 109. At this time, the cleaning plate 4 will not move. Conversely, when the flow rate of the sulfur-containing gas decreases, it means that the filter screen 105 is partially blocked. The speed of the fan 202 decreases, the push blocks retract under the action of the return spring, the follower gear 309 meshes with the drive gear 109, and the bidirectional screw 306 drives the cleaning plate 4 to reciprocate to clean the filter screen 105.

[0054] The end of the exhaust assembly push block 204 away from the rotating disk abuts against the outer surface of the sliding plate 301. By changing the displacement of the push block, the meshing state of the follower gear 307 and the drive gear 109 is controlled, thereby realizing the start and stop of the cleaning action.

[0055] After the follower gear meshes with the drive gear, the drive motor 107, which is fixedly installed on the outer surface of the fixed housing, outputs rotational power, which is transmitted to the drive gear through the output shaft 108. Then, through meshing transmission, it drives the follower gear and the key shaft to rotate synchronously, thereby driving the bidirectional screw 306 fixedly connected to one end of the key shaft to rotate. The cleaning plate 4 is threadedly connected to the bidirectional screw and slidably connected to the guide rod and the limiting rod 309. When the bidirectional screw rotates, the threaded transmission converts the rotational power into the linear motion of the cleaning plate. The limiting rod and the guide rod together constrain the trajectory of the cleaning plate, making it move smoothly along the surface of the filter screen and scrape the impurities intercepted on the filter screen. The bidirectional thread design of the bidirectional screw, combined with the elastic reset effect of the telescopic spring, realizes the reciprocating movement of the cleaning plate on the filter screen, ensuring that every part of the filter screen can be cleaned, avoiding the impact of impurities on the permeability of the filter screen, and reducing the frequency of manual cleaning. The above is the overall workflow of the present invention. This step can be repeated next time it is used. The actual operation process is very simple and easy.

[0056] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0057] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

[0058] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. An easy-to-clean filter, characterized in that: Includes housing assembly (1), exhaust assembly (2), automatic cleaning assembly (3) and cleaning plate (4); The exhaust assembly (2) is detachably connected to the top of the fixed housing (101), the automatic cleaning assembly (3) is located inside the fixed housing (101), and the cleaning plate (4) is linked with the automatic cleaning assembly (3) and abuts against the upper surface of the filter screen (105).

2. The easy-to-clean filter according to claim 1, characterized in that: The mounting housing assembly (1) includes a fixed housing (101), inside which a diversion pipe (102) is symmetrically arranged, the diversion pipe (102) passing through and fixedly connected to the fixed housing (101); on the diversion pipe (102) a water inlet pipe (103) is symmetrically arranged, the water inlet pipe (103) passing through and fixedly connected to the diversion pipe (102); on the inner surface of the fixed housing (101) a lifting groove (104) is symmetrically opened, and a filter screen (105) is slidably connected in the lifting groove (104). 04) A support spring (106) is also provided inside. One end of the support spring (106) is fixedly connected to the fixed housing (101), and the other end is fixedly connected to the filter screen (105). A drive motor (107) is fixedly installed on the outer surface of the fixed housing (101). An output shaft (108) is fixedly connected to the output end of the drive motor (107). The output shaft (108) passes through and is rotatably connected to the fixed housing (101). A drive gear (109) is fixedly connected to the end of the output shaft (108) away from the drive motor (107).

3. The easy-to-clean filter according to claim 2, characterized in that: The exhaust assembly (2) includes a mounting housing (201), which is detachably connected to the top of a fixed housing (101); a fan (202) is provided inside the mounting housing (201), and a rotating disk (203) is fixedly connected to the rotating shaft of the fan (202); push blocks (204) are evenly distributed on the rotating disk (203), and the push blocks (204) are slidably connected to the rotating disk (203); a return spring (205) is connected between the rotating disk (203) and the push blocks (204), one end of the return spring (205) is fixedly connected to the rotating disk (203), and the other end is fixedly connected to the push block (204); the end of the push block (204) away from the rotating disk (203) is arc-shaped.

4. The easy-to-clean filter according to claim 3, characterized in that: The automatic cleaning component (3) includes a sliding plate (301) which is located inside a fixed housing (101). Guide rods (302) are symmetrically arranged on the inner surface of the fixed housing (101). The guide rods (302) are fixedly connected to the fixed housing (101) and pass through and slidably connect to the sliding plate (301). A telescopic spring (303) is sleeved on the guide rod (302). One end of the telescopic spring (303) is fixedly connected to the fixed housing (101) and the other end is fixedly connected to the sliding plate (301). Connecting rods (304) are symmetrically arranged on the telescopic spring (303) and are fixedly connected to the telescopic spring (303). A key shaft (305) is rotatably connected to the inner surface of the fixed housing (101). A double-ended screw (306) is fixedly connected to one end of the key shaft (305). A follower gear (307) is slidably connected to the key shaft (305). A mating groove (308) is symmetrically opened on the follower gear (307). The end of the connecting rod (304) away from the telescopic spring (303) is slidably connected to the mating groove (308). A limit rod (309) is also fixedly connected to the inner surface of the fixed housing (101). The sliding plate (301) is slidably connected to the limit rod (309).

5. A filter that is easy to clean according to claim 4, characterized in that: The end of the push block (204) away from the rotating disk (203) abuts against the outer surface of the sliding plate (301). The follower gear (307) can mesh or disengage with the drive gear (109). When the follower gear (307) meshes with the drive gear (109), the drive motor (107) can drive the key shaft (305) and the double-acting screw (306) to rotate through the drive gear (109) and the follower gear (307).

6. The easy-to-clean filter according to claim 5, characterized in that: The cleaning plate (4) is threadedly connected to the bidirectional screw (306), and the cleaning plate (4) is slidably connected to the guide rod (302); when the bidirectional screw (306) rotates, the cleaning plate (4) can reciprocate linearly along the axial direction of the guide rod (302), and the cleaning plate (4) always abuts against the upper surface of the filter screen (105).

7. A filter that is easy to clean according to claim 6, characterized in that: Both the diversion pipe (102) and the inlet pipe (103) are symmetrical structures, and the axis of the diversion pipe (102) is parallel to the axis of the fixed shell (101), while the axis of the inlet pipe (103) is perpendicular to the axis of the diversion pipe (102).

8. A filter that is easy to clean according to claim 7, characterized in that: The follower gear (307) and the key shaft (305) are connected by a key to achieve synchronous rotation, and the follower gear (307) can slide along the axial direction of the key shaft (305).

9. A filter that is easy to clean according to claim 8, characterized in that: When the gas is conveyed upward through the fixed housing (101) and flows through the fan (202), the gas can drive the fan (202) to rotate, thereby driving the rotating disk (203) and the push block (204) to rotate synchronously; the displacement of the push block (204) changes with the rotation speed of the fan (202).

10. A filter that is easy to clean according to claim 9, characterized in that: When the fan (202) speed decreases, the push block (204) slides towards the center of the rotating disk (203) under the action of the return spring (205), causing the sliding plate (301) to move, so that the follower gear (307) meshes with the drive gear (109); when the fan (202) speed increases, the push block (204) slides outward against the elastic force of the return spring (205), causing the sliding plate (301) to move in the opposite direction, so that the follower gear (307) separates from the drive gear (109).

Images