Filter membrane clamping mechanism for automatic filter membrane replacing system

Abstract

The utility model discloses a filter membrane clamping mechanism for an automatic filter membrane replacing system, which relates to the technical field of environmental monitoring and comprises a filter membrane box, a vertical moving device, a filter membrane clamping moving component and a horizontal moving device. The filter membrane box comprises a filter membrane box main body and a plurality of supporting plates; the supporting plate is fixed on the filter membrane box main body; the plate surface of the supporting plate is horizontal; the projections of all the supporting plates on the horizontal plane are consistent; the distances between the adjacent supporting plates are equal; the filter membrane box main body is fixed on the vertical moving device; the vertical moving device can drive the filter membrane box main body to move in the vertical direction; the filter membrane clamp moving assembly is fixed on the horizontal moving device; the horizontal moving device can drive the filter membrane clamp moving assembly to move in the horizontal direction; the filter membrane clamp moving assembly can move to the position between the two adjacent supporting plates. According to the filter membrane clamp taking mechanism for the automatic filter membrane replacement system, the problem that the filter membrane clamp taking process is tedious in the prior art is solved, and the filter membrane clamp taking process can be simple.

Description

TECHNICAL FIELD

[0001] The utility model relates to environmental monitoring technical field especially relates to the filter membrane clamping mechanism for filter membrane automatic replacement system. BACKGROUND

[0002] The air particulate matter sampler can collect the suspended particulate matter in the ambient atmosphere to the filter membrane, and the filter membrane clamp is a clamp for fixing the filter membrane, which can facilitate the operator to grasp and move the filter membrane.

[0003] The filter membrane automatic replacement system is the prior art, for example, a filter membrane automatic replacement system disclosed in Chinese patent application No. 201521118990.5, which is an equipment based on the air particulate matter sampler, and can automatically replace the filter membrane collected by the air particulate matter sampler (actually, it is moved together with the filter membrane clamp).

[0004] The filter membrane clamp needs to be taken out from the filter membrane storage cylinder, and the replaced filter membrane clamp needs to be stored in the filter membrane storage cylinder. However, the comparative document only limits the function of the filter membrane storage cylinder (filter membrane storage cylinder I is used for storing the filter membrane before sampling, and filter membrane storage cylinder II is used for storing the filter membrane after sampling), but does not disclose the specific structure and working principle of the filter membrane storage cylinder. If a conventional mechanical arm is used for clamping (the filter membrane clamp moves between the filter membrane storage cylinder and the collection area), repeated positioning is required when clamping the filter membrane clamp in the filter membrane storage cylinder, so as to clamp the filter membrane clamp at different positions of the filter membrane storage cylinder. The process of clamping the filter membrane clamp is complicated. UTILITY MODEL CONTENTS

[0005] In view of the above technical problems, the filter membrane clamping mechanism for filter membrane automatic replacement system provided by the utility model can simplify the process of taking and using the filter membrane clamp.

[0006] To achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0007] The filter membrane clamping mechanism for filter membrane automatic replacement system provided by the utility model comprises a filter membrane cassette, a vertical moving device, a filter membrane clamp moving assembly and a horizontal moving device. The filter membrane cassette comprises a filter membrane cassette main body and a plurality of supporting plates. The supporting plates are fixed on the filter membrane cassette main body. The plate surface of the supporting plates is horizontal. The projections of all the supporting plates on the horizontal plane are consistent. The distance between adjacent supporting plates is equal. The filter membrane cassette main body is fixed on the vertical moving device. The vertical moving device can drive the filter membrane cassette main body to move vertically. The filter membrane clamp moving assembly is fixed on the horizontal moving device. The horizontal moving device can drive the filter membrane clamp moving assembly to move horizontally. The filter membrane clamp moving assembly can move between two adjacent supporting plates.

[0008] The filter membrane clamping mechanism for the filter membrane automatic replacement system is characterized in that the horizontal moving device comprises a first motor and a first screw rod; the first motor is in transmission connection with the first screw rod; the first screw rod extends horizontally; a threaded hole in the horizontal direction is formed in the first sliding block; and the first sliding block is in threaded cooperation with the first screw rod.

[0009] The filter membrane clamping mechanism for the filter membrane automatic replacement system is characterized in that the horizontal moving device comprises a first motor and a first screw rod; the first motor is in transmission connection with the first screw rod; the first screw rod extends horizontally; a threaded hole in the horizontal direction is formed in the first sliding block; and the first sliding block is in threaded cooperation with the first screw rod.

[0010] The filter membrane clamping mechanism for the filter membrane automatic replacement system is characterized in that the horizontal moving device comprises a first motor and a first screw rod; the first motor is in transmission connection with the first screw rod; the first screw rod extends horizontally; a threaded hole in the horizontal direction is formed in the first sliding block; and the first sliding block is in threaded cooperation with the first screw rod.

[0011] The filter membrane clamping mechanism for the filter membrane automatic replacement system is characterized in that the horizontal moving device comprises a first motor and a first screw rod; the first motor is in transmission connection with the first screw rod; the first screw rod extends horizontally; a threaded hole in the horizontal direction is formed in the first sliding block; and the first sliding block is in threaded cooperation with the first screw rod.

[0012] The filter membrane clamping mechanism for the filter membrane automatic replacement system is characterized in that the horizontal moving device comprises a first motor and a first screw rod; the first motor is in transmission connection with the first screw rod; the first screw rod extends horizontally; a threaded hole in the horizontal direction is formed in the first sliding block; and the first sliding block is in threaded cooperation with the first screw rod.

[0013] The filter membrane clamping mechanism for the filter membrane automatic replacement system is characterized in that the lower plate surface of the platform is fixed with a guide plate; the guide plate has a protruding part; the upper end of the guide plate gradually approaches the filter membrane cartridge perforation in the horizontal direction to the protruding part; and a gap is left between the protruding part and the supporting plate.

[0014] The filter membrane clamping mechanism for the filter membrane automatic replacement system is characterized in that the upper plate surface of the supporting plate is fixed with a positioning block; the positioning block is arranged at the center of the upper plate surface of the supporting plate; and the positioning block can guide the filter membrane clamp placed thereon to the center of the upper plate surface of the supporting plate.

[0015] The filter membrane clamping mechanism for the filter membrane automatic replacement system is characterized in that the positioning block is a two-plate structure with a high middle and low sides.

[0016] The above technical scheme has the following advantages or beneficial effects:

[0017] The utility model discloses a filter membrane clamping mechanism for filter membrane automatic replacement system relates to environmental monitoring technical field, including filter membrane cartridge, vertical movement device, filter membrane clamp movement subassembly and horizontal movement device, the filter membrane cartridge includes filter membrane cartridge main part and a plurality of supporting plate, the supporting plate is fixed on filter membrane cartridge main part, the plate surface level of supporting plate, all the projection of supporting plate on horizontal plane is identical, adjacent supporting plate distance is equal, filter membrane cartridge main part is fixed on vertical movement device, vertical movement device can drive filter membrane cartridge main part vertical direction removes, filter membrane clamp movement subassembly is fixed on horizontal movement device, horizontal movement device can drive filter membrane clamp movement subassembly horizontal direction removes, filter membrane clamp movement subassembly can remove between two adjacent supporting plate. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model and its features, shape and advantages will become more obvious through reading the detailed description of the non - limited embodiment of the following drawings. Same mark indicates same part in all drawings. The drawing is not drawn according to proportion, and the emphasis is on showing the main idea of the utility model.

[0019] Figure 1 It is the overall structure schematic drawing of filter membrane clamping mechanism for filter membrane automatic replacement system provided by the utility model embodiment 1.

[0020] Figure 2 It is the position relation schematic drawing of guide plate and platform of filter membrane clamping mechanism for filter membrane automatic replacement system provided by the utility model embodiment 1.

[0021] Figure 3 Figure 1 is a schematic diagram of a platform structure of a filter membrane clamping mechanism for a filter membrane automatic replacement system according to an embodiment of the present application.

[0022] Figure 4 Figure 2 is a schematic diagram of a horizontal movement device and a platform position relationship of the filter membrane clamping mechanism for the filter membrane automatic replacement system according to the embodiment of the present application.

[0023] Figure 5 Figure 3 is a schematic diagram of a first limiting component, a second limiting component and a first sliding block position relationship of the filter membrane clamping mechanism for the filter membrane automatic replacement system according to the embodiment of the present application.

[0024] Figure 6 Figure 4 is a schematic diagram of a supporting plate structure of the filter membrane clamping mechanism for the filter membrane automatic replacement system according to the embodiment of the present application. DETAILED DESCRIPTION

[0025] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0026] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Therefore, the detailed description of the embodiments of the present application provided in the following drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0027] Embodiment 1

[0028] The filter membrane clamping mechanism for the filter membrane automatic replacement system provided in the embodiment 1 of the present application is as follows, Figures 1 to 6As shown, it comprises a filter membrane cartridge 1, a vertical moving device 2, a filter membrane clamp moving assembly 3 and a horizontal moving device 4; the filter membrane cartridge 1 comprises a filter membrane cartridge body 11 and a plurality of supporting plates 12; the supporting plates 12 are fixed on the filter membrane cartridge body 11; the plate surface of the supporting plates 12 is horizontal; the projections of all the supporting plates 12 on the horizontal plane are consistent; the distance between adjacent supporting plates 12 is equal; the filter membrane cartridge body 11 is fixed on the vertical moving device 2; the vertical moving device 2 can drive the filter membrane cartridge body 11 to move vertically; the filter membrane clamp moving assembly 3 is fixed on the horizontal moving device 4; the horizontal moving device 4 can drive the filter membrane clamp moving assembly 3 to move horizontally; the filter membrane clamp moving assembly 3 can be moved between two adjacent supporting plates 12.

[0029] The filter membrane clamp taking mechanism for the filter membrane automatic replacement system needs to previously set a filter membrane clamp on all the supporting plates 12 (the filter membrane clamp is prior art, such as the filter membrane clamp for the automatic membrane replacement sampler disclosed in Chinese Patent Application No. 202221133946.1) during use, and uses the control vertical moving device 2 to make the lowermost supporting plate 12 of the filter membrane cartridge 1 flush with the horizontal moving device 4, so that the horizontal moving device 4 can move the filter membrane clamp on the supporting plate 12 (the lowermost supporting plate) to the sampling position (such as Figure 1 As shown, the sampling position is below the air suction pipe fixing groove 01, and an air suction mechanism is arranged below the sampling position; the lower end of the air suction pipe is fixed on the air suction pipe fixing groove 01, the upper end of the air suction pipe is fixed on the sampling head and arranged at the sampling position; the air suction mechanism works to make the air at the sampling position pass through the sampling head and the filter membrane clamp at a high speed, and the dust in the air is deposited on the filter membrane); after sampling, the horizontal moving device 4 moves the filter membrane clamp to the supporting plate 12 (where the filter membrane clamp is originally stored); the vertical moving device 2 moves the filter membrane cartridge upward, the upper surface of the second supporting plate 12 from bottom to top is flush with the horizontal moving device 4, and then the horizontal moving device 4 moves the filter membrane clamp to the sampling position. Compared with the prior art that the sampling mechanical arm directly grasps the filter membrane clamp on the filter membrane cartridge to the sampling position, the horizontal moving device 4 of the equipment provided in the embodiment moves the filter membrane clamp moving assembly 3 at two fixed positions, so the moving route is fixed, and the method of grasping different positions by the mechanical arm is simpler; the distance moved by the vertical moving device is also fixed because the distance between adjacent supporting plates 12 is equal, so the filter membrane clamp taking process provided in the embodiment is simpler than that of the prior art.

[0030] The filter membrane clamp taking mechanism for the filter membrane automatic replacement system provided in the embodiment 1 of the utility model solves the problem that the filter membrane clamp taking process in the prior art is complicated, and can make the filter membrane clamp taking process simple.

[0031] As a preferred solution, in the embodiment, the platform 5 is further included; the horizontal moving device 4 includes a first sliding block 41; the first sliding block 41 is slidably fixed on the upper surface of the platform 5; the platform 5 is provided with a suction hole 51 and a filter membrane cartridge perforation 52; the tray 12 can vertically pass through the filter membrane cartridge perforation 52; the vertical moving device 2 can move the upper surface of the tray 12 to be flush with the upper surface of the platform 5; the filter membrane clamp moving assembly 3 includes a filter membrane clamp limiting plate 31; the filter membrane clamp limiting plate 31 is fixed on the first sliding block 41; during the sliding of the first sliding block 41 relative to the platform 5, the filter membrane clamp limiting plate 31 can be moved between the suction hole 51 and the filter membrane clamp perforation 52. When the filter membrane clamp is moved, the filter membrane clamp limiting plate 31 of the filter membrane clamp moving assembly 3 clamps the filter membrane clamp, and the sliding of the first sliding block 41 relative to the platform 5 can make the filter membrane clamp keep horizontal and always keep the height of the filter membrane clamp uniform; so as to realize the operation that the filter membrane clamp kept horizontal is clamped from the tray 12 and moved to the fixed position of the suction hole 51 (an air suction pipe is arranged above the suction hole 51, and an air suction mechanism is arranged at the lower side).

[0032] In order to realize the horizontal movement of the first sliding block 41 relative to the platform 5, as a preferred solution, in the embodiment, the horizontal moving device 4 includes a first motor 42 and a first screw rod 43; the first motor 42 is in transmission connection with the first screw rod 43; the first screw rod 43 extends horizontally; the first sliding block 41 is provided with a horizontal threaded hole; and the first screw rod 43 is threadedly matched in the threaded hole of the first sliding block 41. The transmission connection mode of the first motor 42 and the first screw rod 43 is a prior art which will not be described in detail here. Through the rotation of the first screw rod 43, the first sliding block 41 is limited to slide on the platform 5, and the first sliding block 41 is pushed by the thread of the first screw rod 43, so as to move along the axis of the first screw rod 43.

[0033] When the first sliding block 41 is moved relative to the first screw rod 43 by rotating the first screw rod 43, the number of rotations of the first screw rod 43 needs to be considered, which increases the control requirements of the first motor 42. In order to facilitate the accurate positioning of the filter membrane clamp to the support plate 12 and the suction hole 51, as a preferred solution, the platform 5 is provided with a first limiting assembly 53 and a second limiting assembly 54 in the embodiment. The first limiting assembly 53 and the second limiting assembly 54 can limit the movement of the first sliding block 41 along the axis direction of the first screw rod 43. When the first sliding block 41 contacts the first limiting assembly 53, the filter membrane clamp limiting plate 31 is located on the suction hole 51. When the first sliding block 42 contacts the second limiting assembly 54, the filter membrane clamp limiting plate 31 is located on the filter membrane cartridge perforation 52. By setting the first limiting assembly 53 and the second limiting assembly 54, the movement distance of the first sliding block 41 can be limited. When the first sliding block 41 contacts the first limiting assembly 53 and the second limiting assembly 54, a contact signal is fed back to the first motor 42 (the feedback signal can be obtained by a sensor and electrically connected to a control panel, which is fed back to the control motor by the control panel, which is a prior art and will not be described in detail here). The first motor 42 stops rotating. On the one hand, the filter membrane clamp limiting plate 31 (by contacting the first limiting assembly 53 and the second limiting assembly 54) can accurately move the filter membrane clamp to the specified position. On the other hand, the first limiting assembly 53 and the second limiting assembly 54 can also prevent the first sliding block 41 from falling off the first screw rod 43.

[0034] As a preferred method, in the embodiment, the vertical moving device 2 includes a second motor 21, a second screw rod 22, a vertical guide rail 23 and a second sliding block 24. The second motor 21 is in transmission connection with the second screw rod 22. The second screw rod 22 extends in the vertical direction. The vertical guide rail 23 extends in the vertical direction. The second sliding block 24 is slidably fixed on the vertical guide rail 23. The second sliding block 24 is provided with a threaded hole in the vertical direction. The second screw rod 22 is threadedly fixed in the threaded hole of the second sliding block 24. When the second screw rod 22 rotates, it can drive the second sliding block 24 to slide along the vertical guide rail. The filter membrane cartridge body 11 is fixed on the second sliding block 24. When it is necessary to control different support plates 12 (upper surface) to be flush with the platform 5 (upper surface), the rotation of the second motor 21 drives the rotation of the second screw rod 22, and the rotation of the second screw rod drives the second sliding block 24 to move along the axis direction of the second screw rod 22 (which is also the extension direction of the vertical guide rail 23). The filter membrane cartridge body 11 fixed on the second sliding block 24 also moves in the vertical direction, and the plate surface of the support plate 12 is horizontal during the movement.

[0035] In order to avoid the filter membrane cartridge main body 11 from colliding with other structures of the automatic membrane changing system in the vertical direction during the vertical movement of the filter membrane cartridge main body 11, and to avoid the second sliding block 24 from falling off the second lead screw 22, as a preferred solution, a fixed plate 6 is further included in the embodiment. The fixed plate 6 is vertical. The platform 5 is fixed on the fixed plate 6. The fixed plate 6 is fixed with a third limiting component 61 and a fourth limiting component 62. The third limiting component 61 and the fourth limiting component 62 can limit the movement of the second sliding block 24 along the vertical guide rail 23.

[0036] Since the filter membrane clamp moving assembly (due to the inevitable errors in the mechanical structure during operation) cannot accurately position the filter membrane clamp in the middle of the support plate 12, in order to ensure that the filter membrane clamp on each support plate 12 is in the middle of the support plate 12, as a preferred solution, a guide plate 7 is fixed on the lower surface of the platform 5 in the embodiment. The guide plate 7 has a protruding portion. The upper end of the guide plate 7 gradually approaches the filter membrane cartridge perforation 52 in the horizontal direction to the protruding portion. There is a gap between the protruding portion and the support plate 12. When the support plate 12 moves vertically, the filter membrane clamp that protrudes out of the support plate 12 will be pushed by the guide plate 7 to the middle of the support plate 12, avoiding the phenomenon of filter membrane clamp jamming (when the filter membrane clamp is placed on the support plate 12, it moves together with the support plate 12 compared to the platform 5. If the filter membrane clamp is in contact with the platform 5, the filter membrane clamp will change position due to the pressure from the platform 5 and the support plate 12. At this time, the platform may exert pressure on the filter membrane clamp, and then the filter membrane clamp exerts pressure on the support plate 12, thereby affecting the vertical movement of the support plate 12 and causing the phenomenon of filter membrane clamp jamming).

[0037] The structure of the filter membrane clamp is prior art. The filter membrane clamp usually has a lower shell in the shape of a circular ring column. Based on the structure of the filter membrane clamp, as a preferred solution, a positioning block 121 is fixed on the upper surface of the support plate 12 in the embodiment. The positioning block 121 is arranged at the center of the upper surface of the support plate 12. The positioning block 121 can guide the filter membrane clamp placed on the positioning block 121 to the center of the upper surface of the support plate 12. The positioning block 121 is a two-plate structure with a high middle and low sides. The structure of the high middle and low sides of the positioning block 121 allows the high middle part to be exactly in the center of the hole of the circular ring column shape of the filter membrane clamp. The high middle part of the positioning block 121 will contact the inner wall of the hole of the circular ring column shape of the lower shell of the filter membrane clamp, thereby avoiding the horizontal movement of the filter membrane clamp compared to the positioning block 121 (when the filter membrane clamp has a tendency to move horizontally, the structure of the positioning block 121 will exert pressure on the inner wall of the hole of the circular ring column shape of the lower shell of the filter membrane clamp, limiting the horizontal movement of the filter membrane clamp), thereby avoiding the filter membrane clamp from falling off the support plate 12 during the vertical movement (with the support plate 12), affecting the normal operation of the equipment.

[0038] The utility model discloses a filter membrane clamping mechanism for filter membrane automatic replacement system relates to environmental monitoring technical field, including filter membrane box, vertical movement device, filter membrane clamping movement subassembly and horizontal movement device, the filter membrane box includes filter membrane box main part and a plurality of supporting plate, the supporting plate is fixed on the filter membrane box main part, the board level of supporting plate, all the projection of supporting plate on horizontal plane is identical, the adjacent supporting plate distance is equal, the filter membrane box main part is fixed on the vertical movement device, the vertical movement device can drive filter membrane box main part vertical direction removes, filter membrane clamping movement subassembly is fixed on the horizontal movement device, the horizontal movement device can drive filter membrane clamping movement subassembly horizontal direction removes, filter membrane clamping movement subassembly can remove between two adjacent supporting plate, the filter membrane clamping mechanism for filter membrane automatic replacement system provided by the utility model solves the problem of complicated filter membrane clamping process in the prior art, and the filter membrane clamping process can be simple.

[0039] The above description is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation, direct or indirect application in other related technical fields by using the content of the utility model specification and drawings are also included in the patent protection range of the utility model.

Claims

1. A filter membrane clamping and picking mechanism for an automatic filter membrane replacement system, characterized in that, Includes a filter membrane cartridge, a vertical moving device, a filter membrane clamp moving assembly, and a horizontal moving device; The filter membrane cartridge includes a filter membrane cartridge body and several trays; the trays are fixed to the filter membrane cartridge body; the surface of the trays is horizontal; the projections of all the trays on the horizontal plane are consistent; the distance between adjacent trays is equal; The filter membrane cartridge body is fixed on the vertical moving device; the vertical moving device can drive the filter membrane cartridge body to move vertically. The filter membrane clamp moving assembly is fixed on the horizontal moving device; the horizontal moving device can drive the filter membrane clamp moving assembly to move horizontally; the filter membrane clamp moving assembly can move between two adjacent trays; It also includes a platform; the horizontal movement device includes a first slider; The first slider is slidably fixed to the surface of the platform. The platform is provided with suction holes and filter membrane cartridge perforations; The tray can pass vertically through the perforation of the filter membrane box; the vertical moving device can move the upper surface of the tray to be flush with the upper surface of the platform. The filter membrane clamp moving assembly includes a filter membrane clamp limiting plate; The filter membrane clamp limiting plate is fixed on the first slider; During the sliding process of the first slider relative to the platform, the filter membrane clamp limiting plate can be moved between the suction hole and the filter membrane clamp through hole; A guide plate is fixed on the lower surface of the platform; The guide plate has a protrusion; The upper end of the guide plate gradually approaches the perforation of the filter membrane cartridge in the horizontal direction from the protrusion; A gap is left between the protrusion and the support plate.

2. The filter membrane clamping mechanism for an automatic filter membrane replacement system as described in claim 1, characterized in that, The horizontal moving device includes a first motor and a first lead screw; The first motor is connected to the first lead screw drive; The first lead screw extends horizontally; The first slider has a horizontally threaded hole; the first lead screw is threaded into the threaded hole of the first slider.

3. The filter membrane clamping mechanism for an automatic filter membrane replacement system as described in claim 2, characterized in that, The platform is equipped with a first limiting component and a second limiting component; The first limiting component and the second limiting component can restrict the first slider from moving along the axial direction of the first lead screw; When the first slider contacts the first limiting component, the filter membrane clamping limiting plate is positioned on the suction hole. When the first slider contacts the second limiting component, the filter membrane clamp limiting plate is positioned on the filter membrane cartridge perforation.

4. The filter membrane clamping mechanism for an automatic filter membrane replacement system as described in claim 1, characterized in that, The vertical moving device includes a second motor, a second lead screw, a vertical guide rail, and a second slider. The second motor is connected to the second lead screw drive; The second lead screw extends vertically; The vertical guide rail extends vertically; the second slider is slidably fixed on the vertical guide rail; The second slider has a threaded hole in the vertical direction; the second lead screw is threaded and fixed in the threaded hole of the second slider; when the second lead screw rotates, it can drive the second slider to slide along the vertical guide rail. The filter membrane cartridge body is fixed on the second slider.

5. The filter membrane clamping mechanism for an automatic filter membrane replacement system as described in claim 4, characterized in that, It also includes a fixing plate; the surface of the fixing plate is vertical; The platform is fixed to the mounting plate; The fixing plate is fixed with a third limiting component and a fourth limiting component; The third and fourth limiting components can restrict the movement of the second slider along the vertical guide rail.

6. The filter membrane clamping mechanism for an automatic filter membrane replacement system as described in claim 1, characterized in that, A positioning block is fixed to the surface of the pallet; The positioning block is located at the center of the upper surface of the pallet; The positioning block can guide the filter membrane clip placed on the positioning block to the center of the plate surface of the tray.

7. The filter membrane clamping mechanism for an automatic filter membrane replacement system as described in claim 6, characterized in that, The positioning block consists of two folded plates, one higher in the middle and one lower on the sides.

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