Columnar filter element framework capable of being repeatedly used

Abstract

The filter element framework comprises a connecting piece and a leakage cylinder and is characterized in that a water inlet pipe and a water outlet pipe are horizontally and fixedly connected to the surface of the connecting piece, a fixing cylinder is fixedly connected to the center of the interior of the connecting piece, and the outer surface of the fixing cylinder is slidably sleeved with a sealing ring; a sliding mechanism for sliding the sealing ring is arranged in the connecting piece, the leakage cylinder is mounted in the center of the bottom of the connecting piece, a filter element is arranged on the surface of the leakage cylinder, a sealing plate is fixedly connected to the bottom of the leakage cylinder, a shell is mounted at the bottom of the connecting piece, a rotating seat is arranged at the bottom of the shell, and a mounting mechanism for mounting the filter element is arranged in the connecting piece. Through the sealing ring and the connecting sleeve sliding in the connecting piece, the circulating direction of water in the connecting piece can be conveniently controlled during use, directional washing of the filter element is facilitated, the use effect of the device is improved, meanwhile, when the filter element is mounted, the filter element can be mounted more stably through the four pressing plates, and the filter element is more convenient to use. And meanwhile, the filter element is more convenient to mount.

Description

Technical Field

[0001] The invention relates to the technical field of filters, and in particular to a reusable columnar filter element skeleton. Background Art

[0002] The pre-filter is the first coarse filtration device for the water used in the whole house. It can filter out large particles such as mud, rust, eggs, and red worms in tap water. The pre-filter is generally installed at the front end of the pipe. In the water treatment system, the pre-filter usually refers to the filtering device before the main filter, which is used to remove larger particles and impurities to protect the normal operation of the main filter and extend its service life.

[0003] However, in actual use, the filter element set in the pre-filter needs to be replaced frequently, which makes it inconvenient to use. Most of the existing filter elements are attached to the outer wall of the frame, surrounding the interior of the frame. In the process of filtering, the pressure difference before and after the filter element is not large, so that the filter element material will not fall off or tear when a pressure difference or vibration occurs. The filter element is usually fixed together with the filter element frame, which means that it needs to be replaced together. This method will result in high maintenance costs, and the high replacement frequency during use will also increase the cost of use. Therefore, the above problems need to be solved. Summary of the invention

[0004] Based on the technical problems existing in the background technology, the present invention proposes a reusable columnar filter element skeleton.

[0005] The invention provides a reusable columnar filter element skeleton, comprising a connector and a drain tube, characterized in that a water inlet pipe and a drain pipe are fixedly connected to the surface of the connector horizontally, the water inlet pipe is arranged at the top of the drain pipe, a fixed tube is fixedly connected to the center of the interior of the connector, the drain pipe is communicated with the interior of the fixed tube, a sealing ring is provided on the sliding sleeve of the outer surface of the fixed tube, a sliding mechanism of the sliding sealing ring is provided inside the connector, the drain tube is installed at the center of the bottom of the connector, a filter element is provided on the surface of the drain tube, a sealing plate is fixedly connected to the bottom of the drain tube, a shell is installed at the bottom of the connector, the drain tube is arranged at the center of the interior of the shell, a rotating seat is provided at the bottom of the shell, a mounting mechanism for mounting the filter element is provided inside the connector, and the sealing ring and the connecting sleeve that slide inside the connector can facilitate the control of the flow direction of the water body inside the connector during use, thereby facilitating the direction flushing of the filter element, thereby improving the use effect of the device, and at the same time, when installing the filter element, the four pressing plates can make the filter element installation more stable, and also make the filter element installation more convenient.

[0006] Furthermore, a connecting ring is fixedly connected to the bottom of the fixed tube, the leakage tube is fixedly connected to the bottom of the connecting ring, a bottom plate is provided at the bottom of the fixed tube, a plurality of first fixing rods are fixedly connected to the surface of the bottom plate, and the plurality of first fixing rods are fixedly connected to the inner wall of the fixed tube at one end away from each other, and two connecting ports are provided on the surface of the fixed tube.

[0007] Preferably, the sliding mechanism includes a second fixed block, two vertical grooves are vertically provided on the surface of the fixed cylinder, the inner wall of the connecting piece is fixedly connected to a limiting ring, the sealing ring cooperates with the limiting ring, the top of the sealing ring is fixedly connected to a fixing ring, and the fixing ring sliding sleeve is arranged on the outer surface of the fixed cylinder, the second fixed block is provided with two, the two second fixed blocks are respectively slidably connected to the inside of the two vertical grooves, the inside of the fixed cylinder is vertically slidably connected with a connecting sleeve, the connecting sleeve is fixedly connected to the two second fixed blocks close to each other at one end, the connecting sleeve cooperates with the two connecting ports, a sliding block is provided at the center of the connecting sleeve, a plurality of third fixing rods are fixedly connected to the surface of the sliding block, and the plurality of third fixing rods are fixedly connected to the inner wall of the connecting sleeve at one end away from each other, the connecting sleeve cooperates with one end of the drain pipe, and is used to make the sealing ring seal or open the inside of the limiting ring, and at the same time, the connecting sleeve will seal or open the two connecting ports and the inside of the two vertical grooves, thereby controlling the flow direction of water.

[0008] Furthermore, a screw rod is rotatably connected at the inner center of the fixed cylinder, the screw rod is vertically arranged, the bottom end of the screw rod is rotatably connected to the top center of the base plate, the top of the screw rod is rotatably sleeved on the top of the connecting piece, a protective cover is installed on the top of the connecting piece, a motor is installed inside the protective cover, and the output end of the motor is fixedly connected to the top of the screw rod for driving the motor to drive the screw rod to rotate, and with the cooperation of the slider, the sealing ring slides up and down.

[0009] Preferably, the mounting mechanism includes a pressure plate, the inner bottom of the connecting piece is provided with a thread, the top of the outer shell is rotatably sleeved on the inner bottom of the connecting piece, the top of the outer shell is matched with the internal thread of the connecting piece, four pressure plates are provided, and the four pressure plates are slidably connected to the inside of the outer shell, the inner wall of the outer shell is fixedly connected with four first fixed blocks, the inner wall of the outer shell is vertically fixedly connected with four slideways, the surface of the slideway is vertically slidably connected with a slide rod, the four first fixed blocks and the surfaces of the four slide rods are hinged with support rods, each of the pressure plates is respectively hinged to each first fixed block and the surface of the slide rod, and the four pressure plates are arranged on the surface of the filter element to limit the sliding of the four pressure plates, so that the four pressure plates clamp or loosen the surface of the filter element.

[0010] Furthermore, the top of the filter element is arranged inside the connecting ring, the bottom of the outer shell is provided with a thread, the top of the rotating seat is rotatably sleeved inside the outer shell, the top of the rotating seat cooperates with the internal thread of the outer shell, a placement seat is provided at the center of the inner part of the rotating seat, a plurality of second fixing rods are fixedly connected to the surface of the placement seat, and a plurality of second fixing rods are fixedly connected to the inner wall of the rotating seat at one end away from each other, the bottom of the filter element is arranged at the top of the placement seat, the bottom of the leakage cylinder is arranged inside the placement seat, the inner wall of the rotating seat is fixedly connected with a first fixing ring, the first fixing ring cooperates with a plurality of sliding rods, and a sewage outlet is provided at the bottom of the rotating seat for installing the rotating seat, thereby driving four pressure plates to slide at the same time, thereby facilitating the installation or disassembly of the filter element.

[0011] In the present invention, the rotating seat is installed so that it is fixedly installed on the bottom end of the shell and fixed by threaded matching. When the rotating seat is installed, the bottom of the filter element will be set in the placement seat on the top of the rotating seat. At the same time, under the setting of the first fixing ring, the four sliding rods will be squeezed and slid upward. Under the connection of multiple support rods, the four pressure plates are made to slide close to each other, so that the four pressure plates press the surface of the filter element, thereby making the installation of the filter element more stable.

[0012] After a period of use, the screw rod will be driven to rotate by the control motor, and with the cooperation of the slider, the connecting sleeve, the second fixed ring and the sealing ring will slide downward. At this time, the sealing ring will seal the inside of the limit ring, and the connecting sleeve will open the two connecting ports. The connection between the drain pipe and the internal connection of the fixed cylinder will also be sealed through the connecting sleeve. Then the valve set at the bottom of the drain outlet will be opened. At this time, water will enter the inside of the connector through the water inlet pipe, and then enter the inside of the fixed cylinder through the two connecting ports, and be discharged to the outside of the filter element through the leakage cylinder, thereby reversely flushing the filter element, and the dirt adsorbed on the surface of the filter element will be flushed, and the dirt after flushing will be discharged through the drain outlet at the bottom of the rotating seat, thereby improving the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front view of a reusable columnar filter element skeleton proposed by the present invention;

[0014] Figure 2 This is a schematic diagram of the surface structure decomposition of a reusable columnar filter element skeleton proposed by the present invention;

[0015] Figure 3 A cross-sectional view of the internal structure of a connector of a reusable columnar filter element skeleton proposed by the present invention;

[0016] Figure 4A schematic diagram of a sliding mechanism of a reusable columnar filter element skeleton proposed by the present invention;

[0017] Figure 5 This is a schematic diagram of the surface structure of a sealing ring of a reusable columnar filter element skeleton proposed by the present invention;

[0018] Figure 6 A schematic diagram of the partial structure of a reusable columnar filter element skeleton proposed by the present invention;

[0019] Figure 7 This is a schematic diagram of a reusable columnar filter element skeleton proposed by the present invention;

[0020] Figure 8 for Figure 7 A magnified image of point A;

[0021] Fig. 9 This is a schematic diagram of the partial structural decomposition of a reusable columnar filter element skeleton proposed by the present invention.

[0022] In the figure: 1. Connecting piece; 11. Water inlet pipe; 12. Drain pipe; 13. Fixed cylinder; 14. Connecting port; 15. Vertical groove; 16. Connecting ring; 17. Bottom plate; 18. First fixed rod; 19. Limiting ring; 110. Leakage cylinder; 111. Sealing plate; 2. Protective cover; 21. Motor; 22. Screw rod; 3. Housing; 31. First fixed block; 32. Slideway; 33. Slide rod; 4. Rotating seat; 41. Drain port; 42. Anti-slip ring; 43. Placement seat; 44. Second fixed rod; 45. First fixed ring; 5. Filter element; 6. Sealing ring; 61. Sliding block; 62. Second fixed ring; 63. Second fixed block; 64. Connecting sleeve; 65. Third fixed rod; 7. Press plate; 71. Support rod. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] Reference Figure 1-Figure 9A reusable columnar filter element skeleton comprises a connector 1 and a drain tube 110, characterized in that a water inlet pipe 11 and a drain pipe 12 are fixedly connected to the surface of the connector 1 horizontally, the water inlet pipe 11 is arranged on the top of the drain pipe 12, a fixed tube 13 is fixedly connected to the center of the interior of the connector 1, the drain pipe 12 is connected to the interior of the fixed tube 13, a sealing ring 6 is provided on the sliding sleeve of the outer surface of the fixed tube 13, a sliding mechanism of the sliding sealing ring 6 is provided inside the connector 1, the drain tube 110 is installed at the bottom center of the connector 1, a filter element 5 is provided on the surface of the drain tube 110, and the bottom of the drain tube 110 is provided with a filter element 5. A sealing plate 111 is fixedly connected, a shell 3 is installed at the bottom of the connecting piece 1, a funnel 110 is arranged at the center of the shell 3, a rotating seat 4 is arranged at the bottom of the shell 3, and a mounting mechanism for installing the filter element 5 is arranged inside the connecting piece 1. Through the sealing ring 6 and the connecting sleeve 64 sliding inside the connecting piece 1, the flow direction of the water inside the connecting piece 1 can be easily controlled during use, so as to facilitate directional flushing of the filter element 5, thereby improving the use effect of the device. At the same time, when installing the filter element 5, the four pressing plates 7 can make the installation of the filter element 5 more stable, and also make the installation of the filter element 5 more convenient.

[0025] Reference Figure 1 and Figure 3 In a preferred embodiment, a connecting ring 16 is fixedly connected to the bottom of the fixed cylinder 13, and the leakage cylinder 110 is fixedly connected to the bottom of the connecting ring 16. A bottom plate 17 is provided at the bottom of the fixed cylinder 13, and a plurality of first fixing rods 18 are fixedly connected to the surface of the bottom plate 17. The plurality of first fixing rods 18 are fixedly connected to the inner wall of the fixed cylinder 13 at one end away from each other, and two connecting ports 14 are provided on the surface of the fixed cylinder 13.

[0026] Reference Figure 2 , Figure 4 and Figure 5In a preferred embodiment, the sliding mechanism includes a second fixed block 63, two vertical grooves 15 are vertically provided on the surface of the fixed cylinder 13, the inner wall of the connecting member 1 is fixedly connected to the limit ring 19, the sealing ring 6 cooperates with the limit ring 19, the top of the sealing ring 6 is fixedly connected to the fixed ring 62, the fixed ring 62 is slidably sleeved on the outer surface of the fixed cylinder 13, the second fixed block 63 is provided with two, the two second fixed blocks 63 are respectively slidably connected to the inside of the two vertical grooves 15, the inside of the fixed cylinder 13 is vertically slidably connected to the connecting sleeve 64, and the connecting sleeve 64 is fixedly connected to the two first The two fixing blocks 63 are close to each other at one end, and the connecting sleeve 64 cooperates with the two connecting ports 14. A slider 61 is provided at the center of the connecting sleeve 64. A plurality of third fixing rods 65 are fixedly connected to the surface of the slider 61. The plurality of third fixing rods 65 are fixedly connected to the inner wall of the connecting sleeve 64 at one end away from each other. The connecting sleeve 64 cooperates with one end of the drain pipe 12 to make the sealing ring 6 seal or open the inside of the limit ring 19, and at the same time, the connecting sleeve 64 will seal or open the inside of the two connecting ports 14 and the two vertical grooves 15, so as to control the flow direction of the water body.

[0027] Reference Figure 2 and Figure 3 In a preferred embodiment, a screw rod 22 is rotatably connected to the inner center of the fixed cylinder 13, the screw rod 22 is vertically arranged, the bottom end of the screw rod 22 is rotatably connected to the top center of the bottom plate 17, the top of the screw rod 22 is rotatably sleeved on the top of the connecting member 1, a protective cover 2 is installed on the top of the connecting member 1, a motor 21 is installed inside the protective cover 2, the output end of the motor 21 is fixedly connected to the top of the screw rod 22, and is used to drive the motor 21 to drive the screw rod 22 to rotate, and with the cooperation of the slider 61, the sealing ring 6 slides up and down.

[0028] Reference Figure 2 , Figure 6 , Figure 7 and Figure 8 In a preferred embodiment, the mounting mechanism includes a pressing plate 7, a thread is provided at the inner bottom of the connecting member 1, the top of the shell 3 is rotatably sleeved on the inner bottom of the connecting member 1, the top of the shell 3 is matched with the internal thread of the connecting member 1, and four pressing plates 7 are provided, and the four pressing plates 7 are all slidably connected to the inside of the shell 3, and the inner wall of the shell 3 is fixedly connected with four first fixed blocks 31, and the inner wall of the shell 3 is vertically fixedly connected with four slideways 32, and the surface of the slideway 32 is vertically slidably connected with a slide rod 33, and the surfaces of the four first fixed blocks 31 and the four slide rods 33 are hinged with a support rod 71, and each pressing plate 7 is respectively hinged to each first fixed block 31 and the surface of the slide rod 33, and the four pressing plates 7 are all arranged on the surface of the filter element 5, which is used to limit the sliding of the four pressing plates 7, so that the four pressing plates 7 clamp or loosen the surface of the filter element 5.

[0029] Reference Figure 7 and Fig. 9In a preferred embodiment, the top of the filter element 5 is arranged inside the connecting ring 16, the bottom of the shell 3 is provided with a thread, the top of the rotating seat 4 is rotatably sleeved inside the shell 3, the top of the rotating seat 4 cooperates with the internal thread of the shell 3, and a placement seat 43 is arranged at the center of the rotating seat 4. A plurality of second fixing rods 44 are fixedly connected to the surface of the placement seat 43, and the plurality of second fixing rods 44 are fixedly connected to the inner wall of the rotating seat 4 at one end away from each other. The bottom of the filter element 5 is arranged at the top of the placement seat 43, and the bottom of the funnel 110 is arranged inside the placement seat 43. A first fixing ring 45 is fixedly connected to the inner wall of the rotating seat 4, and the first fixing ring 45 cooperates with a plurality of sliding rods 33. A sewage outlet 41 is arranged at the bottom of the rotating seat 4 for installing the rotating seat 4, thereby driving the four pressing plates 7 to slide at the same time, thereby facilitating the installation or removal of the filter element 5.

[0030] In the present invention, during actual use, the sealing ring 6 and the connecting sleeve 64 sliding inside the connecting member 1 can facilitate the control of the flow direction of the water inside the connecting member 1, thereby facilitating the directional flushing of the filter element 5, thereby improving the use effect of the device. At the same time, when installing the filter element 5, the four pressing plates 7 can make the installation of the filter element 5 more stable and convenient. When in use, the filter element 5 can be placed inside the housing 3 first, and the filter element 5 can be sleeved on the surface of the drain cylinder 110, and then the rotating seat 4 can be installed so that the rotating seat 4 is fixedly installed at the bottom end of the housing 3 and fixed by thread matching. When the rotating seat 4 is fixed, the filter element 5 can be installed in a fixed manner. When the seat 4 is installed, the bottom of the filter element 5 will be set in the placement seat 43 at the top of the rotating seat 4. At the same time, under the setting of the first fixing ring 45, the four sliding rods 33 will be squeezed and slid upward. Under the connection of multiple support rods 71, the four pressing plates 7 are made to slide close to each other, so that the four pressing plates 7 press the surface of the filter element 5, so that the installation of the filter element 5 is more stable. Then, the water inlet pipe 11 and the drain pipe 12 on the surface of the device are connected respectively, and the sewage outlet 41 at the bottom of the first fixing ring 45 is connected to the drainage through a pipe. When in use, external water will enter the inside of the connector 1 through the water inlet pipe 11, and then flow downward. The water will enter the housing 3, and then pass through the filter element 5 and the inside of the drain tube 110 to filter the water. The filtered water will pass through the inside of the drain tube 110 and the inside of the fixed tube 13, and then be transported through the drain pipe 12. After a period of use, the screw rod 22 will be driven to rotate by the control motor 21. With the cooperation of the slider 61, the connecting sleeve 64, the second fixing ring 62 and the sealing ring 6 will slide downward. At this time, the sealing ring 6 will block the inside of the limit ring 19, and the connecting sleeve 64 will open the two connecting ports 14, and the drain pipe 12 will also be connected to the inside of the fixed tube 13 through the connecting sleeve 64. The drain port 41 is sealed and then the valve at the bottom of the drain port 41 is opened. At this time, water will enter the connector 1 through the water inlet pipe 11, and then enter the fixed cylinder 13 through the two connecting ports 14, and be discharged to the outside of the filter element 5 through the drain cylinder 110, thereby reversely flushing the filter element 5, and the dirt adsorbed on the surface of the filter element 5 will be flushed, and the flushed dirt will be discharged through the drain port 41 at the bottom of the rotating seat 4, thereby improving the use effect of the device. After completion, the motor 21 can be driven in the reverse direction to drive the screw 22 to rotate, so that the sealing ring 6 and the slider 61 slide upward and return, and it can be used continuously.

[0031] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A reusable columnar filter cartridge skeleton, comprising a connecting member (1) and a filter cartridge (110), characterized in that ； A water inlet pipe (11) and a drain pipe (12) are fixedly connected horizontally on the surface of the connecting piece (1), the water inlet pipe (11) is arranged on the top of the drain pipe (12), a fixing cylinder (13) is fixedly connected at the center of the inside of the connecting piece (1), the drain pipe (12) is connected to the inside of the fixing cylinder (13), a sealing ring (6) is slidingly sleeved on the outer surface of the fixing cylinder (13), and a sliding mechanism of the sliding sealing ring (6) is provided inside the connecting piece (1); The drain cylinder (110) is installed at the center of the bottom of the connecting piece (1); a filter element (5) is arranged on the surface of the drain cylinder (110); a sealing plate (111) is fixedly connected to the bottom of the drain cylinder (110); a housing (3) is installed at the bottom of the connecting piece (1); the drain cylinder (110) is arranged at the center of the inside of the housing (3); a rotating seat (4) is arranged at the bottom of the housing (3); and a mounting mechanism for mounting the filter element (5) is arranged inside the connecting piece (1).

2. The reusable columnar filter element skeleton according to claim 1, characterized in that: A connecting ring (16) is fixedly connected to the bottom of the fixed cylinder (13), and the drain cylinder (110) is fixedly connected to the bottom of the connecting ring (16). A bottom plate (17) is provided at the bottom of the fixed cylinder (13), and a plurality of first fixing rods (18) are fixedly connected to the surface of the bottom plate (17). The plurality of first fixing rods (18) are fixedly connected to the inner wall of the fixed cylinder (13) at one end away from each other, and two connecting ports (14) are provided on the surface of the fixed cylinder (13).

3. The reusable columnar filter element skeleton according to claim 2, characterized in that: The sliding mechanism comprises a second fixed block (63), two vertical grooves (15) are vertically provided on the surface of the fixed cylinder (13), a limiting ring (19) is fixedly connected to the inner wall of the connecting member (1), the sealing ring (6) cooperates with the limiting ring (19), a fixing ring (62) is fixedly connected to the top of the sealing ring (6), the fixing ring (62) is slidably sleeved on the outer surface of the fixed cylinder (13), two second fixed blocks (63) are provided, the two second fixed blocks (63) are respectively slidably connected to the inside of the two vertical grooves (15), a connecting sleeve (64) is vertically slidably connected inside the fixed cylinder (13), the connecting sleeve (64) is fixedly connected to one end of the two second fixed blocks (63) close to each other, and the connecting sleeve (64) cooperates with two connecting ports (14).

4. The reusable columnar filter element skeleton according to claim 3, characterized in that: A slider (61) is provided at the inner center of the connecting sleeve (64), and a plurality of third fixing rods (65) are fixedly connected to the surface of the slider (61). The third fixing rods (65) are fixedly connected to the inner wall of the connecting sleeve (64) at one end away from each other. The connecting sleeve (64) is matched with one end of the drainage pipe (12).

5. The reusable columnar filter element skeleton according to claim 4, characterized in that: A screw rod (22) is rotatably connected to the center of the interior of the fixed cylinder (13); the screw rod (22) is arranged vertically; the bottom end of the screw rod (22) is rotatably connected to the center of the top of the bottom plate (17); the top of the screw rod (22) is rotatably sleeved on the top of the connecting member (1); a protective cover (2) is installed on the top of the connecting member (1); a motor (21) is installed inside the protective cover (2); and the output end of the motor (21) is fixedly connected to the top of the screw rod (22).

6. The reusable columnar filter element skeleton according to claim 1, characterized in that: The mounting mechanism comprises a pressing plate (7), the inner bottom of the connecting member (1) is provided with a thread, the top of the outer shell (3) is rotatably sleeved on the inner bottom of the connecting member (1), the top of the outer shell (3) is matched with the inner thread of the connecting member (1), four pressing plates (7) are provided, and the four pressing plates (7) are all slidably connected to the inside of the outer shell (3).

7. The reusable columnar filter element skeleton according to claim 6, characterized in that: Four first fixed blocks (31) are fixedly connected to the inner wall of the shell (3), four slideways (32) are vertically fixedly connected to the inner wall of the shell (3), and the surface of the slideway (32) is vertically slidably connected to a slide rod (33). The four first fixed blocks (31) and the surfaces of the four slide rods (33) are hinged with a support rod (71), and each of the pressure plates (7) is respectively hinged to each of the first fixed blocks (31) and the surface of the slide rod (33), and the four pressure plates (7) are all arranged on the surface of the filter element (5).

8. The reusable columnar filter element skeleton according to claim 7, characterized in that: The top of the filter element (5) is arranged inside the connecting ring (16); the bottom of the outer shell (3) is provided with a thread; the top of the rotating seat (4) is rotatably sleeved inside the outer shell (3); the top of the rotating seat (4) cooperates with the internal thread of the outer shell (3); a placement seat (43) is arranged at the center of the inner part of the rotating seat (4); a plurality of second fixing rods (44) are fixedly connected to the surface of the placement seat (43); the plurality of second fixing rods (44) are fixedly connected to the inner wall of the rotating seat (4) at one end away from each other; the bottom of the filter element (5) is arranged at the top of the placement seat (43); the bottom of the drain cylinder (110) is arranged inside the placement seat (43); the inner wall of the rotating seat (4) is fixedly connected with a first fixing ring (45); the first fixing ring (45) cooperates with a plurality of sliding rods (33); and a sewage outlet (41) is arranged at the bottom of the rotating seat (4).

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