A filter core structure convenient to replace

Abstract

The application relates to a filter core structure convenient to replace, and relates to the technical field of filter cores. The filter core structure comprises a filter core body and a mounting structure mounted in a pipe body. The mounting structure comprises two support pipes which are cross-connected. Two locking rods are slidably connected in each of the support pipes. A sliding groove is formed in the surface of the support pipe and is communicated with the inside of the support pipe. A connecting column is arranged on the side wall of the locking rod facing the sliding groove. A locking block is arranged on the end wall of the connecting column. A connecting ring is arranged at one end of the filter core body and abuts against the surface of the support pipe. A plurality of locking grooves for embedding the locking blocks are formed in the inner wall of the connecting ring. A driving assembly is arranged on the bottom wall of the support pipe. The driving assembly drives the locking rods in the same support pipe to move towards each other or away from each other. The application has the effects of improving the convenience of mounting and dismounting the filter core body and improving the efficiency of replacing the filter core body.

Description

Technical Field

[0001] This application relates to the field of filter technology, and in particular to a filter structure that is easy to replace. Background Technology

[0002] Ballast water refers to the water and suspended matter added to a ship to control its trim, list, draft, stability, or stress. During the ship's voyage, the ship's own pumps will draw seawater into the ship to form ballast water. Before the formation of ballast water, the seawater usually needs to be filtered.

[0003] In related technologies, a ship ballast water treatment system is designed, which includes a sea valve, a seawater coarse filter, a ballast water pump, a seawater fine filter, and a ballast tank. The sea valve is connected to the ballast tank in sequence through the seawater coarse filter, the ballast water pump, the mechanical filter and the microfiltration membrane filter, and the seawater fine filter. After the seawater is filtered through multiple layers, relatively pure ballast water is obtained.

[0004] Regarding the aforementioned technologies, the inventors discovered that after a ship undergoes multiple rounds of ballast water treatment, the filter elements inside the filter inevitably experience damage, blockage, and other abnormalities, which will affect the filtration quality of seawater. It is necessary to replace the filter elements inside the filter regularly. However, in existing ballast water treatment systems, the filter elements are generally connected to the inner wall of the filter pipe by screws, requiring manual loosening and tightening of the screws during disassembly and replacement, which brings inconvenience to the replacement process. Therefore, improvements are needed. Summary of the Invention

[0005] To improve the ease of replacing filter elements in a filter, this application provides a filter element structure that facilitates easy replacement.

[0006] The filter element structure for easy replacement provided in this application adopts the following technical solution:

[0007] A convenient filter element structure includes a filter element body installed inside a tube and an installation structure. The installation structure includes two cross-connected support tubes. Each support tube has two locking rods slidably connected inside it. The surface of each support tube has a sliding groove that communicates with the interior of the support tube. A connecting post is provided on the side wall of each locking rod facing the sliding groove, and a locking block is provided on the end wall of the connecting post. A connecting ring is provided at one end of the filter element body, and the connecting ring abuts against the surface of the support tube. The inner wall of the connecting ring has several locking grooves for the locking blocks to be embedded in. A driving assembly is provided on the bottom wall of each support tube, and the driving assembly drives the locking rods in the same support tube to move toward each other or away from each other.

[0008] By adopting the above technical solution, when the filter element body needs to be replaced, the drive assembly is activated, which drives the locking rod to slide inside the support tube. When the two locking rods on the same support tube slide towards each other, the locking block can disengage from the corresponding locking groove, thereby releasing the support tube from locking the filter element body. Thus, the operator only needs to remove the filter element body from the support tube to complete the quick disassembly of the filter element body. When a new filter element body needs to be replaced, the filter element body only needs to be placed on the support tube, ensuring that the locking groove is aligned with the locking block. The drive assembly then drives the locking block to lock the filter element body. The operation is convenient and, compared with threaded connections and other connection methods, it can effectively improve the installation and disassembly efficiency of the filter element body, and has high practicality and convenience.

[0009] Preferably, the surface of the support tube near the connecting ring has an embedding groove for the connecting ring to be embedded.

[0010] By adopting the above technical solution and creating an embedding groove for the filter element body to snap into, the stability of the filter element body during installation can be effectively improved, which helps to further improve the replacement efficiency of the filter element body.

[0011] Preferably, the side of the support tube facing the filter element body is provided with an adjusting plate. The adjusting plate includes a fixing plate and an abutting plate. The fixing plate is slidably connected to the surface of the support tube, and the surface of the fixing plate is provided with a locking member for connecting the fixing plate to the support tube. The abutting plate is connected to the end of the fixing plate near the embedding groove, the abutting plate extends into the embedding groove, and the side wall of the abutting plate abuts against the outer wall of the filter element body.

[0012] By adopting the above technical solution, the size of the groove between the two support tubes can be flexibly adjusted according to the actual diameter of the filter element body. This allows for more stable support of the filter element body through the appropriate size of the groove, enabling the filter element body to maintain a more stable state when the drive assembly drives the locking block to embed into the locking groove. This improves the installation efficiency and structural integrity of the filter element body.

[0013] Preferably, the driving assembly includes a drive motor, a rotating block, several driving blocks, several pushing members, and several elastic members, with the locking rod, driving block, pushing member, and elastic member corresponding to each other; the rotating block is sleeved on the peripheral wall of the output shaft of the drive motor, several driving blocks are all connected to the peripheral wall of the rotating block, and the several driving blocks are evenly distributed along the circumferential direction of the rotating block; the side of the driving block facing away from the rotating block is an arc surface; the pushing member is slidably connected inside the support tube, one end of the pushing member abuts against the locking rod, and the other end of the pushing member extends out of the support tube and abuts against the surface of the corresponding driving block; the elastic member is connected to the end of the corresponding locking rod facing away from the pushing member; after the rotating block rotates, it drives the pushing member to move and causes the elastic member to compress.

[0014] By adopting the above technical solution, when the drive motor is started, the output shaft of the drive motor will drive the rotating block to rotate. As the drive block follows the rotating block, the contact point between the drive block and the pushing component changes continuously. During this process, the distance between the contact surface of the drive block and the pushing component and the rotating block continuously increases, causing the pushing component to slide towards the locking rod under the push of the drive block. Finally, the locking block can be pushed into the locking groove. Using the drive motor as the only power component allows all the locking rods to lock the filter element body simultaneously, resulting in lower economic costs. When the output shaft of the drive motor rotates in the opposite direction, the locking rod and the pushing component will be reset under the elastic force of the elastic component, allowing the locking block to disengage from the locking groove. At this point, the operator can quickly install and remove the filter element body.

[0015] Preferably, each of the drive blocks is provided with an anti-detachment arc-shaped piece on the side wall away from the rotating block.

[0016] By adopting the above technical solution, the anti-detachment arc-shaped plate can block the pusher after the drive block rotates to its maximum stroke, which can reduce the probability of the pusher falling off and causing damage to the drive assembly, thus providing high safety.

[0017] Preferably, the locking rod includes a sliding rod and a telescopic rod, the connecting column is connected to the telescopic rod, the end wall of the sliding rod near the pushing member is provided with a telescopic groove for the telescopic rod to be inserted, a telescopic spring is provided in the telescopic groove, one end of the telescopic spring is connected to the bottom wall of the telescopic groove, and the other end is connected to the telescopic rod.

[0018] By adopting the above technical solution, the locking block will not be able to engage with the locking groove before the locking groove of the connecting ring is aligned with the locking block. As the drive assembly continues to operate, it will cause jamming between the pusher and the drive block. Under the push of the pusher, the locking block will damage the inner wall of the connecting ring. Furthermore, due to the excessive tightness between them, it is not convenient to rotate the filter body to adjust the relative position between the locking groove and the locking block. By dividing the locking rod into a sliding rod and a telescopic rod, the sliding rod can continue to move while the locking block is tightly against the inner wall of the connecting ring until the position of the filter body is accurately adjusted. At this time, the telescopic rod, the connecting column, and the locking block will quickly engage with the locking groove under the force of the telescopic spring, completing the rapid positioning of the filter body. At the same time, it can also protect the structural integrity of the filter body, the connecting ring, and the drive assembly.

[0019] Preferably, the inner wall of the locking groove is provided with a shock-absorbing pad.

[0020] By adopting the above technical solution, the shock-absorbing pad can buffer the kinetic energy of the locking block when the telescopic spring quickly pulls the locking block into the locking groove, thereby protecting the connecting ring and the locking block, and has high safety and practicality.

[0021] Preferably, the telescopic rod has an air storage groove along its sliding direction, and a piston rod is slidably connected in the air storage groove. One end of the piston rod extends out of the air storage groove and is connected to the bottom wall of the telescopic groove. An air inlet is provided at the end of the telescopic rod away from the sliding rod. The air inlet communicates with the air storage groove. An air inlet hose is provided at the opening of the air inlet. A positioning rod is provided on the side wall of the sliding rod. A buffer sleeve is provided on the end wall of the positioning rod. The air inlet hose abuts into the buffer sleeve after moving with the telescopic rod. The buffer sleeve is located on the travel path of the air inlet hose.

[0022] By adopting the above technical solution, when the telescopic spring is stretched, the piston rod will move from the air storage tank as the sliding rod moves, allowing external air to enter the air storage tank through the air inlet, and also allowing the air inlet hose to abut into the buffer sleeve. When the locking block can enter the locking groove, the air in the air storage tank and the piston can play a certain buffering role. Due to the different diameters of the buffer sleeves, the speed of the telescopic rod can be greatly suppressed during the initial rebound, thereby decelerating the telescopic rod, connecting column and locking block, effectively protecting the connecting ring, and has high practicality.

[0023] Preferably, a water-blocking cover is connected to the inner wall of the end of the connecting ring closest to the filter element body.

[0024] By adopting the above technical solution, the water-blocking cover can achieve a certain waterproof effect, thereby enabling the drive components to work safely and stably, and providing high safety.

[0025] Preferably, it also includes a positioning component, which includes a driven gear, a lifting member, a rotating member, and a driving gear. The driven gear is sleeved on the outer peripheral wall of the filter element body. The rotating member is connected to the lifting member. The lifting member drives the rotating member to move toward the filter element body. The driving gear is connected to the output shaft of the rotating member. The driving gear and the driven gear mesh with each other.

[0026] By adopting the above technical solution and setting the positioning component, after the filter element body is placed into the embedding groove, the driven gear and the driving gear on the peripheral wall of the filter element body can mesh with each other through the lifting and rotating components, thereby forming a rotation of the filter element body. This allows the filter element body to be adjusted to the position where the locking groove and the locking block are aligned, further improving the installation efficiency of the filter element body.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. When the filter element body needs to be replaced, the drive assembly will cause the locking rod to slide inside the support tube. When the two locking rods on the same support tube slide towards each other, the locking block can disengage from the corresponding locking groove, thereby releasing the support tube from locking the filter element body. Thus, the operator only needs to remove the filter element body from the support tube to complete the quick disassembly of the filter element body. When a new filter element body needs to be replaced, the drive assembly will drive the locking block to lock the filter element body. The operation is convenient and, compared with threaded connections and other connection methods, it can effectively improve the installation and disassembly efficiency of the filter element body, and has high practicality and convenience.

[0029] 2. The locking rod is divided into a sliding rod and a telescopic rod, and a positioning component is set up. When the locking groove of the connecting ring is not aligned with the locking block, the position of the filter body is automatically adjusted through the linkage between the positioning component and the drive component, so as to realize the automatic calibration and locking of the filter body installation, which has high convenience and practicality. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a conveniently replaceable filter element structure according to an embodiment of this application.

[0031] Figure 2 This is a schematic diagram of the installation structure according to an embodiment of this application.

[0032] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0033] Figure 4 This is a schematic diagram of the structure of the driving component in an embodiment of this application.

[0034] Explanation of reference numerals in the attached drawings: 1. Filter element body; 2. Installation structure; 21. Support tube; 211. Sliding groove; 212. Embedding groove; 213. Adjusting plate; 2131. Fixing plate; 2132. Abutting plate; 2133. Locking element; 3. Locking rod; 31. Sliding rod; 311. Telescopic groove; 312. Telescopic spring; 313. Positioning rod; 314. Buffer sleeve; 32. Telescopic rod; 321. Connecting column; 322. Locking block; 323. 1. Air storage tank; 324. Piston rod; 325. Air inlet; 326. Air inlet hose; 4. Connecting ring; 41. Locking groove; 42. Shock-absorbing pad; 43. Water baffle; 5. Drive assembly; 51. Drive motor; 52. Rotating block; 53. Drive block; 531. Anti-detachment arc plate; 54. Pushing component; 55. Elastic component; 6. Positioning assembly; 61. Driven gear; 62. Lifting component; 63. Rotating component; 64. Drive gear; 7. Pipe body. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0036] This application discloses a filter element structure that allows for easy replacement. (Refer to...) Figure 1 and Figure 2 A filter element structure that is easy to replace includes a filter element body 1 and an installation structure 2 installed inside the pipe body 7 of the ship's ballast water system. The installation structure 2 includes two support pipes 21 that are intersected and interconnected, and the two support pipes 21 are internally interconnected.

[0037] Reference Figure 2 and Figure 3 The support tube 21 has an embedding groove 212 along its length for embedding the filter element body 1 during installation, thereby improving the stability of the filter element body 1 installation. In this embodiment, the embedding groove 212 is not connected to the inside of the support tube 21.

[0038] Reference Figure 2 and Figure 3An adjusting plate 213 is provided on the support tube 21 facing the filter element body 1. Two adjusting plates 213 are provided on the same support tube 21. The adjusting plate 213 includes a fixing plate 2131 and an abutting plate 2132. The fixing plate 2131 abuts against the surface of the support tube 21 and can slide along the length direction of the surface of the support tube 21. The fixing plate 2131 is provided with a plurality of locking elements 2133 for connecting the fixing plate 2131 to the support tube 21. In this embodiment, the locking elements 2133 are screws. The bolt allows the fixing piece 2131 to be locked to the support tube 21 after the fixing piece 2131 is positioned. The abutment piece 2132 is integrally formed on the end of the fixing piece 2131 near the embedding groove 212. The abutment piece 2132 is bent and abutted into the embedding groove 212, thereby abutting against the outer wall of the filter element body 1. When installing the filter element body 1, a suitable position can be selected according to the diameter of the filter element body 1, so that the filter element body 1 can be installed more stably.

[0039] Reference Figure 2 and Figure 3 One end of the filter element body 1 is connected to a connecting ring 4 by bolts. The connecting ring 4 is coaxially arranged with the filter element body 1 and abuts against the embedded groove 212. The inner wall of the connecting ring 4 is provided with a number of locking grooves 41, which are evenly distributed along the circumferential direction of the inner wall of the connecting ring 4. The inner wall of the connecting ring 4 near the filter element body 1 is integrally formed with a water baffle 43, which can effectively prevent water from flowing through the filter element body 1.

[0040] Reference Figure 2 and Figure 3Each support tube 21 has two locking rods slidably connected inside, with the two locking rods 3 arranged opposite each other. Each locking rod 3 includes a sliding rod 31 and a telescopic rod 32. The sliding rod 31 is slidably connected inside the support tube 21. One end wall of the sliding rod 31 has a telescopic groove 311 for the telescopic rod 32 to be inserted. A telescopic spring 312 is installed inside the telescopic groove 311. One end of the telescopic spring 312 is connected to the bottom wall of the telescopic groove 311 by adhesive, and the other end is connected to the telescopic rod 32 by adhesive. The bottom wall of the insertion groove 212 has a sliding groove 211, which is opened along the length of the support tube 21 and communicates with the inside of the support tube 21. A connecting post 3 is integrally formed on the side wall of the telescopic rod 32 facing the sliding groove 211. 21. A locking block 322 is welded to the end wall of the connecting column 321. The shape of the locking block 322 is adapted to the locking groove 41, so that it can be inserted into the locking groove 41 to complete the positioning of the filter element body 1. When the locking groove 41 and the locking block 322 are not aligned, the sliding rod 31 can continue to move through the telescopic spring 312 until the locking groove 41 is adjusted to be aligned with the locking block 322. Then, the telescopic rod 32 and the locking block 322 will spring into the locking groove 41 under the elastic force of the telescopic spring 312 to complete the locking of the filter element body 1. The inner wall of the locking groove 41 is provided with a shock-absorbing pad 42, which can protect the connecting ring 4 and the locking block 322 when the telescopic rod 32 rebounds, thereby improving safety.

[0041] Reference Figure 2 and Figure 3 The telescopic rod 32 has an air storage groove 323 along its sliding direction. A piston rod 324 is slidably connected in the air storage groove 323. One end of the piston rod 324 extends out of the air storage groove 323 and is connected to the bottom wall of the telescopic groove 311. An air inlet 325 is provided at the end of the telescopic rod 32 away from the sliding rod 31. The air inlet 325 communicates with the air storage groove 323. When the connecting column 321 abuts against the inner wall of the connecting ring 4 and can no longer follow the sliding rod 31, it can drive the piston rod 324 to move, so that external air can enter the air storage groove 323 through the air inlet 325. When the telescopic rod 32 is reset, the reset of the telescopic rod 32 can be buffered by the air pressure inside the air storage groove 323 and the action of the piston rod 324, thereby protecting the structural integrity of the locking rod 3 and the connecting ring 4.

[0042] Reference Figure 2 and Figure 3An intake hose 326 is glued to the opening of the air inlet 325. Two positioning rods 313 are welded to the side wall of the sliding rod 31. A buffer sleeve 314 is provided on the end wall of the positioning rod 313. The buffer sleeve 314 is located on the travel path of the intake hose 326, and the inner diameter of the buffer sleeve 314 gradually decreases from the end near the intake hose 326 to the end away from the intake hose 326. When the intake hose 326 moves with the telescopic rod 32 and abuts against the buffer sleeve 314, the opening of the intake hose 326 is reduced. When the telescopic rod 32 begins to return to its original position, the air pressure inside the air storage tank 323 increases due to the reduced opening of the intake hose 326, which can decelerate the telescopic rod 32 and further achieve the buffering effect.

[0043] Reference Figure 3 and Figure 4 The bottom wall of the support tube 21 is provided with a drive assembly 5. The drive assembly 5 drives the locking rods 3 in the same support tube 21 to move toward each other or away from each other. The drive assembly 5 includes a drive motor 51, a rotating block 52, several drive blocks 53, several pushers 54 and several elastic members 55. The locking rods 3, drive blocks 53, pushers 54 and elastic members 55 are arranged one-to-one.

[0044] Reference Figure 3 and Figure 4 The drive motor 51 is located at the bottom of the intersection of the two support tubes 21. The rotating block 52 is fitted onto the peripheral wall of the output shaft of the drive motor 51 by a key connection and rotates with the output shaft of the drive motor 51. Several drive blocks 53 are welded to the peripheral wall of the rotating block 52. The drive blocks 53 are evenly distributed along the circumferential direction of the rotating block 52. Each drive block 53 is arc-shaped and its thickness gradually decreases from one end to the other. The pusher 54 is slidably connected inside the support tube 21. One end of the pusher 54 abuts against the sliding rod 31, thereby pushing the sliding rod 31 to move. The other end is bent and extends out of the support tube 21 and abuts against the surface of the corresponding drive block 53. When the drive block 53 rotates with the rotating block 52, the contact thickness with the pusher 54 changes, thereby pushing the pusher 54 to move inside the support tube 21. Each drive block 53 has an anti-detachment arc-shaped piece 531 on the side wall away from the rotating block 52.

[0045] Reference Figure 3 and Figure 4 The elastic element 55 is connected to the end of the corresponding locking rod 3 away from the pushing member 54. In this embodiment, the elastic element 55 is a spring. After the rotating block 52 rotates, it drives the pushing member 54 to move and compresses the elastic element 55. After the output shaft of the drive motor 51 reverses, the elastic element 55 drives the locking rod 3 to reset.

[0046] Reference Figure 1 and Figure 3The convenient filter element replacement structure of this application also includes a positioning component 6, which includes a driven gear 61, a lifting component 62, a rotating component 63, and a driving gear 64. The driven gear 61 is sleeved on the outer peripheral wall of the filter element body 1. The rotating component 63 is connected to the lifting component 62. In this embodiment, the rotating component 63 is a motor and the lifting component 62 is a cylinder. The lifting component 62 drives the rotating component 63 to move towards the filter element body 1. The driving gear 64 is sleeved on the peripheral wall of the output shaft of the rotating component 63 by a key connection. When the rotating component 63 rotates, the driving gear 64 and the driven gear 61 mesh with each other, driving the filter element body 1 to rotate until the locking groove 41 is aligned with the locking block 322, and the rotation stops, further improving the installation speed of the filter element body 1.

[0047] The implementation principle of the convenient filter element replacement structure in this application embodiment is as follows: When the filter element body 1 needs to be replaced, by activating the drive assembly 5, the drive assembly 5 will drive the locking rod 3 to slide inside the support tube 21. During the disassembly process, the output shaft of the drive motor 51 reverses, and under the action of the elastic element 55, all the locking rods 3 slide towards the drive assembly 5, so that the locking block 322 can disengage from the locking groove 41, thereby enabling the original filter element body 1 to be disassembled.

[0048] During installation, simply place the filter element body 1 into the mounting slot 212, activate the drive assembly 5, and after the thickness of the contact point between the drive block 53 and the pusher 54 decreases, the positioning assembly 6 aligns the locking groove 41 with the locking block 322, allowing the locking block 322 to abut into the locking groove 41 under the elastic action of the telescopic spring 312, thus locking the filter element body 1. The structure of this application is convenient to operate and, compared with connection methods such as threaded connections, can effectively improve the installation and disassembly efficiency of the filter element body 1, exhibiting high practicality and convenience.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A filter element structure for easy replacement, comprising a filter element body (1) installed in a tube (7) and an installation structure (2), characterized in that: The installation structure (2) includes two cross-connected support tubes (21). Each support tube (21) has two locking rods (3) slidably connected inside. The surface of the support tube (21) is provided with a sliding groove (211), which is connected to the inside of the support tube (21). The side wall of the locking rod (3) facing the sliding groove (211) is provided with a connecting post (321), and the end wall of the connecting post (321) is provided with a locking block (322). One end of the filter element body (1) is provided with a connecting ring (4), which abuts against the surface of the support tube (21). The inner wall of the connecting ring (4) is provided with several locking grooves (41) for the locking blocks (322) to be embedded in. The bottom wall of the support tube (21) is provided with a driving assembly (5), which drives the locking rods (3) in the same support tube (21) to move toward each other or away from each other. The drive assembly (5) includes a drive motor (51), a rotating block (52), several drive blocks (53), several pushers (54), and several elastic members (55). The locking rod (3), drive blocks (53), pushers (54), and elastic members (55) are arranged in a one-to-one correspondence. The rotating block (52) is sleeved on the peripheral wall of the output shaft of the drive motor (51). Several drive blocks (53) are all connected to the peripheral wall of the rotating block (52). The several drive blocks (53) are evenly distributed along the circumferential direction of the rotating block (52). The side of the drive block (53) facing away from the rotating block (52) is an arc surface. The pusher (54) is slidably connected inside the support tube (21). One end of the pusher (54) abuts against the locking rod (3). The other end of the pusher (54) extends out of the support tube (21) and abuts against the surface of the corresponding drive block (53). The elastic member (55) is connected to the end of the corresponding locking rod (3) facing away from the pusher (54). After the rotating block (52) rotates, it drives the pusher (54) to move and compresses the elastic member (55). The locking rod (3) includes a sliding rod (31) and a telescopic rod (32). The connecting column (321) is connected to the telescopic rod (32). The sliding rod (31) has a telescopic groove (311) for the telescopic rod (32) to be inserted into one end wall near the pusher (54). A telescopic spring (312) is provided in the telescopic groove (311). One end of the telescopic spring (312) is connected to the bottom wall of the telescopic groove (311), and the other end is connected to the telescopic rod (32). The telescopic rod (32) has an air storage groove (323) along its sliding direction. A piston rod (324) is slidably connected in the air storage groove (323). One end of the piston rod (324) extends out of the air storage groove (323) and is connected to the bottom wall of the telescopic groove (311). An air inlet (325) is provided at the end of the telescopic rod (32) away from the sliding rod (31). The air inlet (325) communicates with the air storage groove (323). An air inlet hose (326) is provided at the opening of the air inlet (325). A positioning rod (313) is provided on the side wall of the sliding rod (31). A buffer sleeve (314) is provided on the end wall of the positioning rod (313). The air inlet hose (326) abuts into the buffer sleeve (314) after the telescopic rod (32) moves. The buffer sleeve (314) is located on the travel path of the air inlet hose (326).

2. The filter element structure for easy replacement according to claim 1, characterized in that: The support tube (21) has an embedding groove (212) on its surface near the connecting ring (4), and the embedding groove (212) is for the connecting ring (4) to be embedded.

3. The filter element structure for easy replacement according to claim 2, characterized in that: The side of the support tube (21) facing the filter body (1) is provided with an adjustment piece (213). The adjustment piece (213) includes a fixing piece (2131) and an abutment piece (2132). The fixing piece (2131) is slidably connected to the surface of the support tube (21). The surface of the fixing piece (2131) is provided with a locking member (2133) for connecting the fixing piece (2131) and the support tube (21). The abutment piece (2132) is connected to the end of the fixing piece (2131) near the embedding groove (212). The abutment piece (2132) extends into the embedding groove (212). The side wall of the abutment piece (2132) abuts against the outer wall of the filter body (1).

4. The filter element structure for easy replacement according to claim 1, characterized in that: Each of the drive blocks (53) is provided with an anti-detachment arc-shaped piece (531) on the side wall opposite to the rotating block (52).

5. The filter element structure for easy replacement according to claim 1, characterized in that: The inner wall of the locking groove (41) is provided with a shock-absorbing pad (42).

6. The filter element structure for easy replacement according to claim 1, characterized in that: A water-blocking cover (43) is connected to the inner wall of the end of the connecting ring (4) near the filter body (1).

7. The filter element structure for easy replacement according to claim 1, characterized in that: It also includes a positioning component (6), which includes a driven gear (61), a lifting member (62), a rotating member (63), and a driving gear (64). The driven gear (61) is sleeved on the outer peripheral wall of the filter element body (1). The rotating member (63) is connected to the lifting member (62). The lifting member (62) drives the rotating member (63) to move toward the filter element body (1). The driving gear (64) is connected to the output shaft of the rotating member (63). The driving gear (64) meshes with the driven gear (61).

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