Field dismounting device for filter cartridge

Abstract

The invention discloses an on-site dismounting device for a filter cartridge, which is specially used for dismounting the filter cartridge with a Venturi end cover to realize rapid and safe dismounting operation. The on-site filter cartridge dismounting device comprises a lower transmission shaft, an upper transmission shaft, a fixed shaft, an upper ejection block, a lower ejection block and a driving disc, the lower transmission shaft, the upper transmission shaft and the fixed shaft are sequentially and rotatably sleeved from inside to outside, a first mounting part is arranged on the lower end circumferential surface of the fixed shaft, and the lower end of the upper transmission shaft is exposed out of the fixed shaft and is vertically provided with a linkage part and a second mounting part at an interval; the upper jacking block and the lower jacking block are respectively matched on the first mounting part and the second mounting part in a radial sliding manner and are respectively in transmission connection with the linkage part and the driving disc, and the driving disc and the lower transmission shaft synchronously rotate so as to convert the rotary motion of the shaft into the radial motion of the jacking blocks; the outer side end face of the upper ejector block is provided with an attaching inclined face.

Description

Technical Field

[0001] This invention belongs to the technical field of supporting tools for industrial dust removal equipment, and specifically refers to a filter cartridge on-site disassembly device, which is particularly suitable for the rapid on-site disassembly of venturi structure filter cartridges. Background Technology

[0002] With the iterative updates of energy-saving dust removal technologies, more and more industrial dust collectors are beginning to adopt large-diameter Venturi flow-guiding structure filter cartridges, whose advantages include: (1) The opening area is larger, which can introduce a larger air volume and improve the processing capacity of a unit filter cartridge; (2) The dust removal pulse airflow path has been optimized, resulting in higher fluid introduction efficiency; (3) The curved structure is more conducive to flow guidance and bonding, reduces leakage, and has better air tightness.

[0003] However, it is precisely this Venturi structure design that causes the end cap of the filter cartridge to have a curved, constricted opening structure, without obvious grips or edges, which can easily lead to the following problems: (a) The hands cannot grip deeply or apply force, making manual disassembly on site difficult; (b) Conventional tools are not compatible; traditional hook-shaped or clamping tools may slip or damage the filter cartridge. (c) It increases the intensity of manual labor, and may even be difficult to dismantle in equipment with limited space, resulting in low work efficiency and easy damage during disassembly and assembly.

[0004] Therefore, a dedicated disassembly device must be designed for the quick and safe removal of the Venturi structure filter cartridge. Summary of the Invention

[0005] The main objective of this invention is to provide a filter cartridge on-site disassembly device to solve the problems existing in the prior art. It is specifically designed for disassembling filter cartridges with venturi end caps, enabling fast and safe disassembly operations.

[0006] To achieve the above objectives, the solution of the present invention is: A filter cartridge on-site disassembly device includes a lower drive shaft, an upper drive shaft, a fixed shaft, an upper top block, a lower top block, and a drive disc. The upper drive shaft is rotatably sleeved on the circumferential surface of the lower drive shaft, and the fixed shaft is rotatably sleeved on the circumferential surface of the upper drive shaft. A first mounting portion is provided on the lower circumferential surface of the fixed shaft. The lower end of the upper drive shaft protrudes from the lower end of the fixed shaft and is provided with a linkage portion and a second mounting portion at intervals. Several upper top blocks are arranged at equal angular intervals around the axis of the fixed shaft, and each upper top block slides along the radial direction of the fixed shaft in the first mounting portion. The upper drive shaft has a rotating shaft with a sliding contact surface on its outer end face. The linkage part is connected to each upper drive shaft to convert the rotational motion of the upper drive shaft into the linear motion of the upper drive shaft. Several lower drive shafts are arranged at equal angles around the axis of the upper drive shaft, and each lower drive shaft slides along the radial direction of the upper drive shaft on the second mounting part. The lower end of the lower drive shaft protrudes from the lower end of the upper drive shaft and is provided with the drive disc. The drive disc is connected to each lower drive shaft to convert the rotational motion of the lower drive shaft into the linear motion of the lower drive shaft.

[0007] The first mounting part is a disc structure integrally formed on the lower circumferential surface of the fixed shaft, and a plurality of first guide grooves are recessed on its circumferential surface. The length direction of the first guide groove is set to the radial direction of the fixed shaft. The inner end of the upper top block is set as an upper guide block that slides in the first guide groove. The upper guide block is connected to the linkage part in a transmission manner.

[0008] Preferably, the lower surface of the upper guide block is provided with an upper linkage rod; the lower wall of the first guide groove is provided with a first guide rail, the length direction of the first guide rail is set as the radial direction of the fixed shaft; the linkage part is a disc structure integrally formed on the lower circumferential surface of the upper drive shaft, which is provided with a first arc-shaped hole for the upper linkage rod to be inserted, the two ends of the first arc-shaped hole are not on the same diameter of the upper drive shaft, and each first arc-shaped hole is centrally symmetrically arranged around the axis of the upper drive shaft; the upper linkage rod is simultaneously movably inserted through the first guide rail and the first arc-shaped hole.

[0009] Preferably, the upper top block is provided with stepped portions on both sides of the end of the upper guide block, and the stepped portions movably abut against the circumferential surface of the first mounting portion.

[0010] The second mounting part is a disc structure integrally formed on the lower circumferential surface of the upper drive shaft. A plurality of second guide grooves are recessed on its circumferential surface. The length direction of the second guide groove is set to the radial direction of the upper drive shaft. The inner end of the lower top block is slidably fitted in the second guide groove and is connected to the linkage part for transmission.

[0011] Preferably, a lower linkage rod is provided on the lower surface of the lower guide block; a second guide rail is provided through the lower wall of the second guide groove, and the length direction of the second guide rail is set to the radial direction of the upper drive shaft; a second arc-shaped hole is provided on the drive disk for the lower linkage rod to be inserted, the two ends of the second arc-shaped hole are not on the same diameter of the lower drive shaft, and each second arc-shaped hole is centrally symmetrically arranged around the axis of the lower drive shaft; the lower linkage rod is simultaneously movably inserted through the second guide rail and the second arc-shaped hole.

[0012] An arc-shaped block is provided at the outer end of the lower top block.

[0013] The upper end of the upper drive shaft is higher than the upper end of the fixed shaft, and the upper circumferential surface of the fixed shaft and the upper circumferential surface of the upper drive shaft are connected and limited by a limiting rod; the upper end of the lower drive shaft is higher than the upper end of the upper drive shaft, and the upper circumferential surface of the upper drive shaft and the upper circumferential surface of the lower drive shaft are connected and limited by a limiting rod.

[0014] Preferably, the upper end circumferential surface of the upper drive shaft is provided with a first boss, and the lower end surface of the first boss is provided with a first annular slot for the upper end of the fixed shaft to be inserted; the fixed shaft is designed as two symmetrical parts; the two ends of the limiting rod are respectively snapped to the upper end circumferential surface of the fixed shaft and the circumferential surface of the first boss.

[0015] Preferably, the upper circumferential surface of the lower drive shaft is provided with a second boss, and the lower end surface of the second boss is provided with a second annular slot for the upper end of the upper drive shaft to be inserted; the two ends of the limiting rod are respectively snapped to the upper circumferential surface of the first boss and the circumferential surface of the second boss; the drive disk and the lower drive shaft are designed separately, and the lower end of the lower drive shaft is provided with a connecting post for the drive disk to be coaxially connected.

[0016] By adopting the above technical solution, the present invention has the following technical effects: (1) The present invention consists of several upper top blocks and several lower top blocks forming two sets of rotatable and expandable structures. The upper top blocks and lower top blocks are driven to extend or retract by rotating the upper drive shaft and the lower drive shaft, respectively, thereby achieving the clamping effect on the inner wall of the filter cartridge end cap with the Venturi flow guiding structure, and realizing the quick and safe removal of the filter cartridge.

[0017] (2) The lower top block can be fitted on the step on the inner wall of the end cap, and the upper top block can be firmly attached to the inclined surface of the Chinese mound guide structure of the filter cartridge end cap through its fitting inclined surface. It fits the part of the filter cartridge end cap in different directions, so that the filter cartridge can be pulled up quickly and safely without shaking, avoiding misalignment and tearing, and does not rely on violent disassembly or tool prying. During the disassembly process, the filter cartridge body structure or its sealing surface will not be damaged, which can reduce the filter cartridge damage rate, and is efficient and safe. Moreover, the present invention is simple to operate and easy for maintenance personnel to carry and use to achieve on-site disassembly and assembly.

[0018] (3) The present invention can adapt to the Venturi flow guiding structure of filter cartridges of different diameters, and is applicable to all industrial dust collector users who have adopted Venturi structure filter cartridges, and can form a standardized supporting parts sales model.

[0019] (4) The upper and lower blocks of the present invention are modularly designed, with uniform disassembly force, high efficiency and good stability. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of a specific embodiment of the present invention.

[0021] Figure 2 Three-dimensional representation of a specific embodiment of the present invention Figure 1 .

[0022] Figure 3 Three-dimensional representation of a specific embodiment of the present invention Figure 2 .

[0023] Figure 4 This is a perspective view of the upper drive shaft according to a specific embodiment of the present invention.

[0024] Figure 5 This is an exploded view of the fixed shaft according to a specific embodiment of the present invention.

[0025] Figure 6 This is a perspective view of the top block in a specific embodiment of the present invention.

[0026] Figure 7 This is a perspective view of the lower top block according to a specific embodiment of the present invention.

[0027] Figure 8 This is a perspective view of the lower linkage part according to a specific embodiment of the present invention.

[0028] Figure 9 This is a schematic diagram of the present invention for disassembling a Venturi structure filter cartridge. Figure 1 .

[0029] Figure 10 This is a schematic diagram of the present invention for disassembling a Venturi structure filter cartridge. Figure 2 ...

[0030] Explanation of icon numbers: 10-Lower drive shaft; 11-Second boss; 12-Second annular slot; 13-Connecting post; 20 - Upper drive shaft; 21 - Linkage part; 22 - Second mounting part; 23 - First arc-shaped hole; 24 - Second guide groove; 25 - Second guide rail; 26 - First boss; 27 - First annular slot; 30 - Fixed shaft; 31 - First mounting part; 32 - First guide groove; 33 - First guide rail; 40 - Top block; 41 - Fitting slope; 42 - Upper guide block; 43 - Upper linkage rod; 44 - Step section; 50 - Lower top block; 51 - Lower linkage rod; 52 - Arc-shaped block; 60 - Drive plate; 61 - Second arc-shaped hole; 70, 70' - Limiting bar; 80-sleeve; 90 - Filter cartridge; 91 - Venturi end cap; 911 - Inner bevel; 100-Floor. Detailed Implementation

[0031] To further explain the technical solution of the present invention, the present invention will be described in detail below through specific embodiments.

[0032] refer to Figures 1 to 8 As shown, the present invention discloses a filter cartridge on-site disassembly device, including a lower drive shaft 10, an upper drive shaft 20, a fixed shaft 30, an upper top block 40, a lower top block 50, and a drive disc 60; The upper drive shaft 20 is rotatably sleeved on the circumferential surface of the lower drive shaft 10, and the fixed shaft 30 is rotatably sleeved on the circumferential surface of the upper drive shaft 20; a first mounting part 31 is provided on the lower circumferential surface of the fixed shaft 30; the lower end of the upper drive shaft 20 is exposed at the lower end of the fixed shaft 30, and a linkage part 21 and a second mounting part 22 are provided at intervals above and below. Several upper top blocks 40 are arranged at equal angles around the axis of the fixed shaft 30. Each upper top block 40 slides along the radial direction of the fixed shaft 30 on the first mounting part 31. The outer end face of the upper top block 40 is provided with a fitting inclined surface 41, which matches the inclined surface of the mound guide structure in the filter cartridge end cover. The linkage part 21 is connected to each upper top block 40 to realize the conversion of the rotational motion of the upper drive shaft 20 into the linear movement of the upper top block 40. Several lower top blocks 50 are arranged at equal angles around the axis of the upper drive shaft 20, and each lower top block 50 slides along the radial direction of the upper drive shaft 20 on the second mounting part 22. The lower end of the lower drive shaft 10 is exposed above the lower end of the upper drive shaft 20 and is provided with a drive disk 60; the drive disk 60 is connected to each lower top block 50 to realize the conversion of the rotational motion of the lower drive shaft 10 into the linear movement of the lower top block 50.

[0033] Through the above scheme, the present invention consists of a plurality of upper top blocks 40 and a plurality of lower top blocks 50 forming two sets of rotatable and expandable structures. The upper top blocks 40 and lower top blocks 50 are extended or retracted by rotating the upper drive shaft 20 and the lower drive shaft 10, respectively, thereby achieving a clamping effect on the inner wall of the filter cartridge end cap with a Venturi flow guiding structure, and realizing the quick and safe removal of the filter cartridge. The lower top block 50 can be fitted onto the step on the inner wall of the end cover, and the upper top block 40 can be firmly attached to the inclined surface of the Venturi flow guide structure on the filter cartridge end cover through its fitting inclined surface 41. It fits against part of the surface of the filter cartridge end cover in different directions, so that the filter cartridge can be quickly and safely pulled upward without shaking, avoiding misalignment and tearing, and does not rely on violent disassembly or tool prying. During the disassembly process, the filter cartridge body structure or its sealing surface will not be damaged, which can reduce the filter cartridge damage rate, and is highly efficient and safe. Moreover, the invention is simple to operate and easy for maintenance personnel to carry and use for on-site disassembly and assembly. At the same time, the invention can be adapted to the Venturi flow guide structure of filter cartridges with different diameters (such as Φ130mm, Φ160mm), and is suitable for all industrial dust collector users who have adopted Venturi structure filter cartridges, which can form a standardized supporting parts sales model. In addition, the upper top block 40 and the lower top block 50 of the invention are modularly designed, with uniform disassembly force, high efficiency and good stability.

[0034] The following illustrates specific embodiments of the present invention.

[0035] The first mounting part 31 is a disc structure integrally formed on the lower circumferential surface of the fixed shaft 30. A plurality of first guide grooves 32 are recessed on its circumferential surface. The length direction of the first guide grooves 32 is set to the radial direction of the fixed shaft 30. The inner end of the upper top block 40 is set to an upper guide block 42 that is slidably fitted in the first guide grooves 32. The upper guide block 42 is connected to the linkage part 21 in a transmission manner.

[0036] Furthermore, an upper linkage rod 43 is provided on the lower surface of the upper guide block 42; a first guide rail 33 is provided through the lower wall of the first guide groove 32, and the length direction of the first guide rail 33 is set as the radial direction of the fixed shaft 30; the linkage part 21 is a disc structure integrally formed on the lower circumferential surface of the upper drive shaft 20, and a first arc-shaped hole 23 is provided on it for the upper linkage rod 43 to be inserted and movably engaged. The two ends of the first arc-shaped hole 23 are not on the same diameter of the upper drive shaft 20, and each first arc-shaped hole 23 is centrally symmetrically arranged around the axis of the upper drive shaft 20; the upper linkage rod 43 is simultaneously movably inserted through the first guide rail 33 and the first arc-shaped hole 23. Thus, when the upper drive shaft 20 rotates, it can drive the upper linkage rod 43 to move between the two ends of the first arc-shaped hole 23, thereby realizing the extension or retraction of the upper top block 40 in the first guide groove 32.

[0037] Meanwhile, the upper top block 40 is provided with stepped portions 44 on both sides of the end of the upper guide block 42. The stepped portions 44 create a cross-section between the upper guide block 42 and the main body of the upper top block 40, preventing the main body of the upper top block 40 from being inserted into the first guide groove 32, thereby limiting the retraction stroke of the upper top block 40. When the upper top block 40 retracts until the stepped portion 44 contacts the circumferential surface of the first mounting portion 31, the first mounting portion 31 can provide support to overcome the reaction force generated by the inclined surface of the Venturi guide structure during the removal of the filter cartridge.

[0038] The aforementioned second mounting part 22 is a disc structure integrally formed on the lower circumferential surface of the upper drive shaft 20. A plurality of second guide grooves 24 are recessed on its circumferential surface. The length direction of the second guide grooves 24 is set to the radial direction of the upper drive shaft 20. The inner end of the lower top block 50 is slidably fitted in the second guide grooves 24 and is connected to the linkage part 21 for transmission.

[0039] Furthermore, a lower linkage rod 51 is provided on the lower surface of the lower guide block 51; a second guide rail 25 is provided through the lower wall of the second guide groove 24, and the length direction of the second guide rail 25 is set as the radial direction of the upper drive shaft 20; a second arc-shaped hole 61 is provided on the drive disk 60 for the lower linkage rod 51 to be inserted and movably engaged, the two ends of the second arc-shaped hole 61 are not on the same diameter of the lower drive shaft 10, and each second arc-shaped hole 61 is centrally symmetrically arranged around the axis of the lower drive shaft 10; the lower linkage rod 51 is simultaneously movably inserted through the second guide rail 25 and the second arc-shaped hole 61. Thus, when the lower drive shaft 10 rotates, it can drive the lower linkage rod 51 to move between the two ends of the second arc-shaped hole 61, thereby realizing the extension or retraction of the lower top block 50 in the second guide groove 24.

[0040] An arc-shaped block 52 is provided on the outer end of the aforementioned lower top block 50. This increases the contact area between the lower top block 50 and the filter cartridge end cover, making the removal of the filter cartridge more stable.

[0041] In the embodiments of the present invention, the number of the upper top block 40, the lower top block 50, the first guide groove 32, the second guide groove 24, the first arc-shaped hole 23, and the second arc-shaped hole 61 are all designed to be eight.

[0042] The upper end of the upper drive shaft 20 is higher than the upper end of the fixed shaft 30, and the upper circumferential surface of the fixed shaft 30 is connected and limited to the upper circumferential surface of the upper drive shaft 20 by a limiting rod 70; the upper end of the lower drive shaft 10 is higher than the upper end of the upper drive shaft 20, and the upper circumferential surface of the upper drive shaft 20 is connected and limited to the upper circumferential surface of the lower drive shaft 10 by a limiting rod 70'. Thus, the limiting rods 70 and 70' can respectively interlock the fixed shaft 30 and the upper drive shaft 20, and the upper drive shaft 20 and the lower drive shaft 10. When the limiting rod 70 is installed, the corresponding two shafts cannot move axially or rotate, thereby restricting the rotating and opening function of the present invention. Specifically, the circumferential surfaces of the lower drive shaft 10, the upper drive shaft 20, and the fixed shaft 30 are all provided with a retainer for the limiting rod 70 to engage.

[0043] Furthermore, the upper circumferential surface of the aforementioned upper drive shaft 20 is provided with a first protrusion 26, and the lower end surface of the first protrusion 26 is provided with a first annular slot 27 for the upper end of the fixed shaft 30 to be inserted. Since the upper drive shaft 20 is integrally formed with the linkage part 21, and the first protrusion 26 also protrudes from the circumferential surface of the upper drive shaft 20, certain interference occurs at both ends. Therefore, the present invention designs the fixed shaft 30 into two symmetrical parts, which facilitates installation onto the circumferential surface of the upper drive shaft 20 and insertion into the first annular slot 27. The two ends of the limiting rod 70 are respectively snapped to the upper circumferential surface of the fixed shaft 30 and the circumferential surface of the first protrusion 26. Thus, the position of the fixed shaft 30 on the circumferential surface of the upper drive shaft 20 can be restricted by the first annular slot 27, and the protruding first protrusion 26 can be used as the user's operating part (at this time, the fixed shaft 30 is relatively fixed and does not rotate). Specifically, the left and right separate fixed shafts 30 are connected / assembled by bolts, welding, or other methods after being installed onto the circumferential surface of the upper drive shaft 20.

[0044] Secondly, a second protrusion 11 is provided on the upper circumferential surface of the lower drive shaft 10, and a second annular slot 12 is provided on the lower end surface of the second protrusion 11 for the upper end of the upper drive shaft 20 to be inserted into; the two ends of the limiting rod 70' are respectively snapped into the upper circumferential surface of the first protrusion 26 and the circumferential surface of the second protrusion 11. Thus, the position of the upper drive shaft 20 on the circumferential surface of the lower drive shaft 10 can be restricted by the second annular slot 12, and the protruding second protrusion 12 can be used as the user's operating part.

[0045] Furthermore, to facilitate the assembly of each shaft, the drive disk 60 and the lower drive shaft 10 are designed separately. The upper drive shaft 20 can be installed on the circumference of the lower drive shaft 10 first, then the fixed shaft 30 can be installed on the circumference of the upper drive shaft 20, and finally the drive disk 60 can be installed. The lower end of the lower drive shaft 10 is provided with a connecting post 13 for coaxial connection of the drive disk 60.

[0046] Furthermore, the present invention also includes a sleeve 80 fitted onto the upper end of the lower drive shaft 10. The sleeve 80 is used to cover and isolate the upper rotating part of the lower drive shaft 10. On the one hand, it can prevent operators from accidentally touching the lower drive shaft 10 or the upper drive shaft 20 during rotation, thereby improving the safety of the device during manual operation on site. On the other hand, the sleeve 80 can guide and protect the rotating structure, preventing foreign objects from entering the interior of the rotating structure and ensuring the stability and reliability of the transmission process.

[0047] The working principle of this invention is explained as follows: (1) Unfolding of the bottom block 50 Maintain the connection of the limiting rod 70 between the fixed shaft 30 and the upper drive shaft 20, so that the upper drive shaft 20 is fixed to the fixed shaft 30 and cannot be displaced; disconnect the limiting rod 70' between the lower drive shaft 10 and the upper drive shaft 20; at this time, rotate the lower drive shaft 10, and the drive disc 60 will rotate accordingly, and drive the lower top block 50 to move radially through the second arc-shaped hole 61 and the lower linkage rod 51 inside, so that the lower top block 50 unfolds.

[0048] (2) The unfolding of the top block 40 Disconnect the two limiting rods 70 and 70', rotate the first boss 26 of the upper drive shaft 20, and the linkage part 21 rotates synchronously. Through the first arc hole 23 and the upper linkage rod 43 inside it, the upper top block 40 is driven to move radially, so that the upper top block 40 unfolds.

[0049] (3) Both sets of top blocks unfold simultaneously Disconnect the limiting rod 70 between the fixed shaft 30 and the upper drive shaft 20, and keep the limiting rod 70' between the lower drive shaft 10 and the upper drive shaft 20 connected; the operation causes only the lower drive shaft 10 and the upper drive shaft 20 to rotate. Since the two shafts are fixed, the linkage 21 and the drive disk 60 rotate synchronously, and the two sets of top blocks 40 unfold at the same time.

[0050] refer to Figure 9 , Figure 10 As shown, when disassembling the filter cartridge 90 with the Venturi flow guiding structure using the present invention, its engagement with the Venturi end cap 91 and the operation process are as follows: (I) In the initial state, both the upper block 40 and the lower block 50 are in a radially contracted state.

[0051] (II) First, lock the upper drive shaft 20 and the lower drive shaft 10 with the limiting rod so that the upper drive shaft 20 and the lower drive shaft 10 rotate synchronously. At this time, whether the first boss 26 of the upper drive shaft 20 or the second boss 11 of the lower drive shaft 10 is rotated, the linkage part 21 can be driven to rotate, so that the upper top block 40 unfolds radially outward.

[0052] (III) See Figure 9 The entire device is then inserted axially into the interior of the Venturi end cap 91, allowing the upper block 40 to enter the Venturi flow guide structure area. By rotating, the upper block 40 is radially expanded, causing its outer end face's contact bevel 41 to engage with the inner bevel 911 of the Venturi end cap 91, thus forming a stable bevel support fit inside the Venturi end cap 91. After the contact bevel 41 engages with the inner bevel 911, moderate shaking of the device gradually loosens the interference fit of the sealing ring between the filter cartridge 90 and the perforated plate 100, reducing the resistance to subsequent axial removal of the filter cartridge 90.

[0053] (IV) See Figure 10 After the interference fit of the sealing ring is loosened, rotate any boss to make the upper top block 40 radially contract; then, lock the fixed shaft 30 with the lower drive shaft 10, and release the locking relationship between the upper drive shaft 20 and the lower drive shaft 10, so that the lower drive shaft 10 is in a fixed state.

[0054] (V) Next, rotate the upper drive shaft 20 to make the lower top block 50 expand radially outward and move the device axially so that the lower top block 50 forms an abutment fit with the inner wall of the venturi end cap 91, thereby providing axial support for the filter cartridge 90. Continue to pull the device upward axially, and with the support of the lower top block 50, pull the filter cartridge 90 out as a whole, completing the disassembly operation of the filter cartridge 90.

[0055] The above embodiments and figures are not intended to limit the product form and style of the present invention. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present invention.

Claims

1. A filter cartridge on-site disassembly device, characterized in that: It includes a lower drive shaft, an upper drive shaft, a fixed shaft, an upper top block, a lower top block, and a drive disc; The upper drive shaft is rotatably sleeved on the circumferential surface of the lower drive shaft, and the fixed shaft is rotatably sleeved on the circumferential surface of the upper drive shaft; a first mounting part is provided on the lower circumferential surface of the fixed shaft; the lower end of the upper drive shaft protrudes from the lower end of the fixed shaft, and a linkage part and a second mounting part are provided at intervals above and below. The upper top blocks are arranged at equal angular intervals around the axis of the fixed shaft. Each upper top block is slidably fitted onto the first mounting part along the radial direction of the fixed shaft, and the outer end face of the upper top block is provided with a fitting inclined surface. The linkage part is drivenly connected to each upper top block to realize the conversion of the rotational motion of the upper drive shaft into the linear movement of the upper top block. The lower top blocks are arranged at equal angular intervals around the axis of the upper drive shaft, and each lower top block is slidably fitted on the second mounting part along the radial direction of the upper drive shaft; The lower end of the lower drive shaft protrudes from the lower end of the upper drive shaft and is provided with the drive disk; the drive disk is connected to each lower top block to realize the conversion of the rotational motion of the lower drive shaft into the linear movement of the lower top block.

2. The filter cartridge on-site disassembly device as described in claim 1, characterized in that: The first mounting part is a disc structure integrally formed on the lower circumferential surface of the fixed shaft, and a plurality of first guide grooves are recessed on its circumferential surface. The length direction of the first guide groove is set to the radial direction of the fixed shaft. The inner end of the upper top block is set as an upper guide block that slides in the first guide groove. The upper guide block is connected to the linkage part in a transmission manner.

3. The filter cartridge on-site disassembly device as described in claim 2, characterized in that: The lower surface of the upper guide block is provided with an upper linkage rod; the lower wall of the first guide groove is provided with a first guide rail, the length direction of the first guide rail is set as the radial direction of the fixed shaft; the linkage part is a disc structure integrally formed on the lower circumferential surface of the upper drive shaft, which is provided with a first arc-shaped hole for the upper linkage rod to be inserted, the two ends of the first arc-shaped hole are not on the same diameter of the upper drive shaft, and each first arc-shaped hole is centrally symmetrically arranged around the axis of the upper drive shaft; the upper linkage rod is simultaneously movably inserted through the first guide rail and the first arc-shaped hole.

4. The filter cartridge on-site disassembly device as described in claim 2, characterized in that: The upper top block is provided with stepped portions on both sides of the end of the upper guide block, and the stepped portions movably abut against the circumferential surface of the first mounting portion.

5. The filter cartridge on-site disassembly device as described in claim 1, characterized in that: The second mounting part is a disc structure integrally formed on the lower circumferential surface of the upper drive shaft. A plurality of second guide grooves are recessed on its circumferential surface. The length direction of the second guide groove is set to the radial direction of the upper drive shaft. The inner end of the lower top block is slidably fitted in the second guide groove and is connected to the linkage part for transmission.

6. The filter cartridge on-site disassembly device as described in claim 5, characterized in that: The lower guide block has a lower linkage rod on its lower surface; the lower wall of the second guide groove has a second guide rail that runs through it, and the length direction of the second guide rail is set to the radial direction of the upper drive shaft; the drive disk has a second arc-shaped hole for the lower linkage rod to be inserted, the two ends of the second arc-shaped hole are not on the same diameter of the lower drive shaft, and each second arc-shaped hole is centrally symmetrically arranged around the axis of the lower drive shaft; the lower linkage rod is simultaneously movably inserted through the second guide rail and the second arc-shaped hole.

7. The filter cartridge on-site disassembly device as described in claim 1, characterized in that: An arc-shaped block is provided at the outer end of the lower top block.

8. The filter cartridge on-site disassembly device as described in claim 1, characterized in that: The upper end of the upper drive shaft is higher than the upper end of the fixed shaft, and the upper circumferential surface of the fixed shaft and the upper circumferential surface of the upper drive shaft are connected and limited by a limiting rod; the upper end of the lower drive shaft is higher than the upper end of the upper drive shaft, and the upper circumferential surface of the upper drive shaft and the upper circumferential surface of the lower drive shaft are connected and limited by a limiting rod.

9. The filter cartridge on-site disassembly device as described in claim 8, characterized in that: The upper drive shaft has a first boss on its upper circumferential surface, and the lower end of the first boss has a first annular slot for the upper end of the fixed shaft to be inserted into; the fixed shaft is designed as two symmetrical parts; the two ends of the limiting rod are respectively snapped to the upper circumferential surface of the fixed shaft and the circumferential surface of the first boss.

10. The filter cartridge on-site disassembly device as described in claim 9, characterized in that: The upper circumferential surface of the lower drive shaft is provided with a second protrusion, and the lower end surface of the second protrusion is provided with a second annular slot for the upper end of the upper drive shaft to be inserted; the two ends of the limiting rod are respectively snapped to the upper circumferential surface of the first protrusion and the circumferential surface of the second protrusion; the drive disk and the lower drive shaft are designed separately, and the lower end of the lower drive shaft is provided with a connecting post for the drive disk to be coaxially connected.

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