Ultrasonic cleaning device for liquid crystal display screen production

Abstract

The utility model discloses an ultrasonic cleaning device for liquid crystal display screen production, and relates to the technical field of ultrasonic cleaning, the ultrasonic cleaning device comprises an ultrasonic base, a cleaning pool, a lifting frame, first clamping seats and second clamping seats, two second supports are both provided with second spacing adjusting mechanisms, the second spacing adjusting mechanisms are symmetrically provided with the first clamping seats, and the first clamping seats are symmetrically provided with the second spacing adjusting mechanisms. A first telescopic air cylinder is installed on the second support, a third support is installed at the output end of the first telescopic air cylinder, a third distance adjusting mechanism is arranged in the third support, second clamping bases are symmetrically installed on the third distance adjusting mechanism, and an isolation filter screen plate is arranged on the upper portion in the separation pool. In the ultrasonic cleaning process, the first clamping seat and the second clamping seat are alternately used for alternately clamping the glass substrate to be cleaned, so that all the positions to be cleaned on the glass substrate can be fully exposed for efficient cleaning; and the cleaning liquid is pumped out, filtered by the isolation filter screen plate and then enters the cleaning pool again.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic cleaning, in particular to an ultrasonic cleaning device for producing liquid crystal display screens. Background Art

[0002] Ultrasonic cleaning is a key step in the production process of LCD screens. Ultrasonic cleaning can effectively remove various dirt and residues generated in the production process of LCD screens, improving product quality and production efficiency. The principle of ultrasonic cleaning is to use high-frequency vibration ultrasound to cause liquid molecules to produce violent collisions, stirring and other effects, thereby stripping and removing dirt and residues from the surface. In the production of LCD screens, ultrasonic cleaning can be applied to various production links, such as cleaning of glass substrates, cleaning of film surfaces, photoresist stripping, etc. Ultrasonic cleaning has the advantages of high efficiency, high cleanliness and low cost, so it has been widely used in the production of LCD screens.

[0003] In the process of ultrasonic cleaning of glass substrates, half of the existing ultrasonic cleaning equipment uses a clamping mechanism in the cleaning tank to clamp the glass substrate to be cleaned and then clean it. In order to ensure clamping stability and avoid clamping damage, the clamping area of ​​the clamping part of the clamping mechanism and the glass substrate is large, resulting in that the glass substrate covered by the clamping part cannot be cleaned well. If it is necessary to clean this position, the glass substrate needs to be re-clamped to expose this part for secondary cleaning. Such repeated disassembly and assembly of the glass substrate is cumbersome and greatly reduces the cleaning efficiency. In addition, the existing ultrasonic cleaning tank lacks a corresponding filtering structure, resulting in the reused cleaning liquid containing more impurities, which is not conducive to the subsequent cleaning operation. Therefore, the utility model proposes an ultrasonic cleaning device for liquid crystal display production to solve the deficiencies in the prior art. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide an ultrasonic cleaning device for the production of liquid crystal display screens. During the ultrasonic cleaning process, a first clamping seat and a second clamping seat are used alternately to clamp the glass substrate to be cleaned, so that all the positions to be cleaned on the glass substrate can be fully exposed for efficient cleaning. By arranging an isolation filter plate in the separation tank, the cleaning liquid is pumped out through the isolation filter plate, filtered and then enters the cleaning tank for circulation again.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An ultrasonic cleaning device for liquid crystal display production comprises an ultrasonic base, a cleaning tank, a lifting frame, a first clamping seat and a second clamping seat, an ultrasonic generator is installed inside the ultrasonic base, a cleaning tank is arranged above the ultrasonic base, lifting frames are respectively installed on both sides of the top of the cleaning tank, first supports are symmetrically arranged inside the cleaning tank, two of the first supports are connected to the lifting frames, and first spacing adjustment mechanisms are installed on the two first supports, second supports are symmetrically installed on the first spacing adjustment mechanism, second spacing adjustment mechanisms are installed on the two second supports, first clamping seats are symmetrically arranged on the second spacing adjustment mechanism, a first telescopic cylinder is installed on the second support, a third support is installed on the output end of the first telescopic cylinder, a third spacing adjustment mechanism is arranged inside the third support, second clamping seats are symmetrically installed on the third spacing adjustment mechanism, two groups of the second clamping seats are located between two groups of the first clamping seats, and the first clamping seat and the second clamping seat are arranged in a line;

[0007] A separation tank is installed on one side of the ultrasonic base, and the cleaning tank is connected to the separation tank through a drain pipe. An isolation filter plate is provided above the interior of the separation tank, and a reflux pipe is installed below the outer side of the separation tank. A water pump is installed on one side wall of the cleaning tank, and the upper end of the reflux pipe is connected to the input end pipe of the water pump, and the output end pipe of the water pump leads to the upper part of the interior of the cleaning tank.

[0008] A further improvement is that the lifting frame includes a vertical bracket and a second telescopic cylinder, the vertical bracket is installed on the outer side of the top of the cleaning pool, the second telescopic cylinder is installed on the bottom of the vertical bracket, and the top of the first support is installed with the output end of the second telescopic cylinder.

[0009] A further improvement is that the first spacing adjustment mechanism, the second spacing adjustment mechanism and the third spacing adjustment mechanism have the same structure and all include bidirectional screw rods and guide rods. The bidirectional screw rods are respectively rotatably mounted on a group of the first supports, two groups of the second supports and two groups of the third supports, and the guide rods are respectively mounted on another group of the first supports, two groups of the second supports and two groups of the third supports.

[0010] Further improvements are: the two ends of the second support are respectively connected to the bidirectional screw rod and guide rod of the first spacing adjustment mechanism, the first clamping seat is connected to the bidirectional screw rod and guide rod of the second spacing adjustment mechanism through the first movable seat, and the second clamping seat is connected to the bidirectional screw rod and guide rod of the third spacing adjustment mechanism through the second movable seat.

[0011] Further improvements are: the first clamping seat and the second clamping seat have the same structure, both including a frame, a third telescopic cylinder, a spring and a rubber sleeve, a third telescopic cylinder is provided on the upper part of the frame, a connecting rod is provided on the output end of the third telescopic cylinder, a rubber sleeve is provided on the outer sliding sleeve of the connecting rod, a spring is provided inside the rubber sleeve, and the upper end of the spring is connected to the bottom of the connecting rod.

[0012] A further improvement is that: the isolation filter plate is provided with pull-out grooves on both sides, and both ends of the isolation filter plate are movably installed in the pull-out grooves.

[0013] The beneficial effects of the utility model are as follows: the utility model connects the first clamping seat with the bidirectional screw rod and the guide rod of the second spacing adjustment mechanism through the first moving seat, and connects the second clamping seat with the bidirectional screw rod and the guide rod of the third spacing adjustment mechanism through the second moving seat, so that the first clamping seat and the second clamping seat can be used alternately to alternately clamp the glass substrate to be cleaned during ultrasonic cleaning, so that all the positions to be cleaned on the glass substrate can be fully exposed for efficient cleaning, and there is no need to take out the glass substrate for secondary clamping to achieve sufficient cleaning, and the first spacing adjustment mechanism can be used to enable the ultrasonic cleaning device of the utility model to adapt to ultrasonic cleaning operations of glass substrates of different sizes;

[0014] The utility model provides a separation tank and an isolation filter plate in the separation tank, and uses a water pump to pump cleaning liquid containing impurities out of the cleaning tank through the isolation filter plate, and then re-enters the cleaning tank for circulation after filtering, which can effectively ensure that the cleaning liquid has high-efficiency purification ability and avoid more impurities affecting the subsequent cleaning quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 This is an enlarged schematic diagram of the internal structure of the cleaning pool of the utility model;

[0017] Figure 3 This is a schematic diagram of the assembly structure of the second spacing adjustment mechanism and the third spacing adjustment mechanism of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the first clamping seat and the second clamping seat of the utility model;

[0019] Figure 5 This is a schematic diagram of the front view of the rubber sleeve installation structure of the utility model;

[0020] Figure 6 It is a top view schematic diagram of the installation structure of the ultrasonic generator of the utility model.

[0021] Wherein: 1. ultrasonic base; 2. cleaning tank; 3. lifting frame; 301. vertical bracket; 302. second telescopic cylinder; 4. first clamping seat; 5. second clamping seat; 6. ultrasonic generator; 7. first support; 8. first spacing adjustment mechanism; 9. second support; 10. second spacing adjustment mechanism; 11. first telescopic cylinder; 12. third support; 13. third spacing adjustment mechanism; 14. separation tank; 15. discharge pipe; 16. isolation filter plate; 17. return pipe; 18. water pump; 19. two-way screw; 20. guide rod; 21. first moving seat; 22. second moving seat; 23. frame; 24. third telescopic cylinder; 25. spring; 26. rubber sleeve; 27. connecting rod; 28. pull-out groove. DETAILED DESCRIPTION

[0022] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with an embodiment. The embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention. Example

[0023] according to Figure 1-3 As shown in Figures 6 and 7, the present embodiment provides an ultrasonic cleaning device for liquid crystal display production, comprising an ultrasonic base 1, a cleaning tank 2, a lifting frame 3, a first clamping seat 4 and a second clamping seat 5, wherein an ultrasonic generator 6 is installed inside the ultrasonic base 1, a cleaning tank 2 is arranged above the ultrasonic base 1, and lifting frames 3 are respectively installed on both sides of the top of the cleaning tank 2, and first supports 7 are symmetrically arranged inside the cleaning tank 2, and two of the first supports 7 are connected to the lifting frames 3, and first spacing adjustment mechanisms 8 are installed on the two first supports 7, and second supports 9 are symmetrically installed on the first spacing adjustment mechanism 8, and second spacing adjustment mechanisms 10 are installed on the two second supports 9, and first clamping seats 4 are symmetrically arranged on the second spacing adjustment mechanism 10, and first telescopic supports 9 are installed on the second supports 9. Cylinder 11, a third support 12 is installed at the output end of the first telescopic cylinder 11, a third spacing adjustment mechanism 13 is arranged inside the third support 12, a second clamping seat 5 is symmetrically installed on the third spacing adjustment mechanism 13, two groups of the second clamping seats 5 are located between the two groups of the first clamping seats 4, and the first clamping seat 4 and the second clamping seat 5 are arranged in a line; a separation tank 14 is installed on one side of the ultrasonic base 1, and the cleaning tank 2 is connected to the separation tank 14 through a discharge pipe 15, an isolation filter plate 16 is provided above the separation tank 14, a return pipe 17 is installed at the lower outer side of the separation tank 14, a water pump 18 is installed on one side wall of the cleaning tank 2, the upper end of the return pipe 17 is connected to the input end pipe of the water pump 18, and the output end pipe of the water pump 18 leads to the upper part of the cleaning tank 2.

[0024] When the ultrasonic cleaning device for producing liquid crystal display screens of the utility model performs ultrasonic cleaning on the glass substrate, the first support 7 is raised on the lifting frame 3 so that all structures on the first support 7 are located above the liquid surface of the cleaning tank 2, and then the distance between the two groups of second supports 9 is adjusted by the first spacing adjustment mechanism 8 according to the size of the glass substrate, and then the clamping range distance between the two groups of first clamping seats 4 is adjusted by the second spacing adjustment mechanism 10, at this time, the first telescopic cylinder 11 is controlled to reset so that the second clamping seat 5 on the third support 12 does not participate in the clamping operation, and then the lifting frame 3 is operated to drive the clamped glass substrate into the cleaning tank 2, and the ultrasonic generator 6 is started to emit The high-frequency oscillation signal is converted into high-frequency mechanical oscillation by a transducer and propagated to the cleaning liquid in the cleaning tank 2. The vibrating cleaning liquid can impact the dirt on the surface of the glass substrate and clean the glass substrate. At this time, the glass substrate at the clamping position of the first clamping seat 4 has not been cleaned. The first telescopic cylinder 11 can be controlled to drive the third support 12 to extend, so that the second clamping seat 5 can clamp the glass substrate after reaching the position. Then, the first clamping seat 4 moves relatively to both sides under the action of the second spacing adjustment mechanism 10 and exits the glass substrate position. At this time, the clamping is only provided by the second clamping seat 5, and the glass substrate at the clamping position of the second clamping seat 5 has been cleaned, thereby achieving full cleaning. At the same time, during the cleaning process, the water pump 18 is turned on to pump the cleaning liquid in the cleaning tank 2 into the separation tank 14, and then the cleaning liquid is pumped into the cleaning tank 2 after separation and filtration by the isolation filter plate 16 to complete the cycle.

[0025] The lifting frame 3 includes a vertical support 301 and a second telescopic cylinder 302. The vertical support 301 is installed on the outer side of the top of the cleaning pool 2, and the second telescopic cylinder 302 is installed on the bottom of the vertical support 301. The top of the first support 7 is installed with the output end of the second telescopic cylinder 302. When the second telescopic cylinder 302 is in operation, it can drive the first support 7 to move up and down.

[0026] The first spacing adjustment mechanism 8, the second spacing adjustment mechanism 10 and the third spacing adjustment mechanism 13 have the same structure, and all include a bidirectional screw 19 and a guide rod 20. The bidirectional screw 19 is rotatably mounted on one group of the first support 7, two groups of the second support 9 and two groups of the third support 12, respectively, and the guide rod 20 is mounted on another group of the first support 7, two groups of the second support 9 and two groups of the third support 12. The two ends of the second support 9 are respectively connected to the bidirectional screw 19 and the guide rod 20 of the first spacing adjustment mechanism 8, the first clamping seat 4 is connected to the bidirectional screw 19 and the guide rod 20 of the second spacing adjustment mechanism 10 through the first moving seat 21, and the second clamping seat 5 is connected to the bidirectional screw 19 and the guide rod 20 of the third spacing adjustment mechanism 13 through the second moving seat 22. The components connected to the bidirectional screw 19 and the guide rod 20 can be started to move by driving the bidirectional screw 19 to rotate. The driving source of the bidirectional screw 19 is not shown, and can be a motor. Example

[0027] according to Figure 1-6 As shown, the present embodiment proposes an ultrasonic cleaning device for liquid crystal display production, comprising an ultrasonic base 1, a cleaning tank 2, a lifting frame 3, a first clamping seat 4 and a second clamping seat 5, an ultrasonic generator 6 is installed inside the ultrasonic base 1, a cleaning tank 2 is arranged above the ultrasonic base 1, and lifting frames 3 are respectively installed on both sides of the top of the cleaning tank 2, first supports 7 are symmetrically arranged inside the cleaning tank 2, two of the first supports 7 are connected to the lifting frame 3, and first spacing adjustment mechanisms 8 are installed on the two first supports 7, second supports 9 are symmetrically installed on the first spacing adjustment mechanism 8, and second spacing adjustment mechanisms 10 are installed on the two second supports 9, the second spacing adjustment mechanism 10 is symmetrically provided with the first clamping seat 4, and the second support 9 is installed with a first telescopic gas Cylinder 11, a third support 12 is installed at the output end of the first telescopic cylinder 11, a third spacing adjustment mechanism 13 is arranged inside the third support 12, a second clamping seat 5 is symmetrically installed on the third spacing adjustment mechanism 13, two groups of the second clamping seats 5 are located between the two groups of the first clamping seats 4, and the first clamping seat 4 and the second clamping seat 5 are arranged in a line; a separation tank 14 is installed on one side of the ultrasonic base 1, and the cleaning tank 2 is connected to the separation tank 14 through a discharge pipe 15, an isolation filter plate 16 is provided above the separation tank 14, a return pipe 17 is installed at the lower outer side of the separation tank 14, a water pump 18 is installed on one side wall of the cleaning tank 2, the upper end of the return pipe 17 is connected to the input end pipe of the water pump 18, and the output end pipe of the water pump 18 leads to the upper part of the cleaning tank 2.

[0028] The first clamping seat 4 and the second clamping seat 5 have the same structure, and both include a frame 23, a third telescopic cylinder 24, a spring 25 and a rubber sleeve 26. The third telescopic cylinder 24 is provided on the upper part of the frame 23. A connecting rod 27 is provided at the output end of the third telescopic cylinder 24. A rubber sleeve 26 is slidably sleeved on the outer side of the connecting rod 27. A spring 25 is provided inside the rubber sleeve 26, and the upper end of the spring 25 is connected to the bottom of the connecting rod 27. By configuring the first clamping seat 4 and the second clamping seat 5 to consist of the frame 23, the third telescopic cylinder 24, the spring 25 and the rubber sleeve 26, the cooperation of the spring 25 and the rubber sleeve 26 can realize elastic positioning, and avoid clamping damage to the glass substrate caused by rigid clamping positioning. Example

[0029] according to Figure 1-6 As shown, the present embodiment proposes an ultrasonic cleaning device for liquid crystal display production, comprising an ultrasonic base 1, a cleaning tank 2, a lifting frame 3, a first clamping seat 4 and a second clamping seat 5, an ultrasonic generator 6 is installed inside the ultrasonic base 1, a cleaning tank 2 is arranged above the ultrasonic base 1, and lifting frames 3 are respectively installed on both sides of the top of the cleaning tank 2, first supports 7 are symmetrically arranged inside the cleaning tank 2, two of the first supports 7 are connected to the lifting frame 3, and first spacing adjustment mechanisms 8 are installed on the two first supports 7, second supports 9 are symmetrically installed on the first spacing adjustment mechanism 8, and second spacing adjustment mechanisms 10 are installed on the two second supports 9, the second spacing adjustment mechanism 10 is symmetrically provided with the first clamping seat 4, and the second support 9 is installed with a first telescopic gas Cylinder 11, a third support 12 is installed at the output end of the first telescopic cylinder 11, a third spacing adjustment mechanism 13 is arranged inside the third support 12, a second clamping seat 5 is symmetrically installed on the third spacing adjustment mechanism 13, two groups of the second clamping seats 5 are located between the two groups of the first clamping seats 4, and the first clamping seat 4 and the second clamping seat 5 are arranged in a line; a separation tank 14 is installed on one side of the ultrasonic base 1, and the cleaning tank 2 is connected to the separation tank 14 through a discharge pipe 15, an isolation filter plate 16 is provided above the separation tank 14, a return pipe 17 is installed at the lower outer side of the separation tank 14, a water pump 18 is installed on one side wall of the cleaning tank 2, the upper end of the return pipe 17 is connected to the input end pipe of the water pump 18, and the output end pipe of the water pump 18 leads to the upper part of the cleaning tank 2.

[0030] The draw-out grooves 28 are provided on both sides of the isolation filter screen plate 16, and the two ends of the isolation filter screen plate 16 are movably mounted in the draw-out grooves 28. The draw-out grooves 28 can be provided to realize quick disassembly and cleaning of the isolation filter screen plate 16.

[0031] The utility model connects the first clamping seat 4 with the bidirectional screw 19 and the guide rod 20 of the second spacing adjustment mechanism 10 through the first movable seat 21, and connects the second clamping seat 5 with the bidirectional screw 19 and the guide rod 20 of the third spacing adjustment mechanism 13 through the second movable seat 22. The first clamping seat 4 and the second clamping seat 5 can be used alternately to alternately clamp the glass substrate to be cleaned during ultrasonic cleaning, so that all the positions to be cleaned on the glass substrate can be fully exposed for efficient cleaning, without taking out the glass substrate for secondary clamping to achieve sufficient cleaning, and the first spacing adjustment mechanism 8 can be used to make the ultrasonic cleaning device of the utility model adaptable to ultrasonic cleaning operations of glass substrates of different sizes; the utility model sets a separation tank 14, and sets an isolation filter plate 16 in the separation tank 14, and uses a water pump 18 to pump the cleaning liquid containing impurities out of the cleaning tank 2 through the isolation filter plate 16, and then enters the cleaning tank 2 for circulation again after filtering, which can effectively ensure that the cleaning liquid has efficient purification ability and avoid more impurities affecting the subsequent cleaning quality.

[0032] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An ultrasonic cleaning device for liquid crystal display production, characterized in that: The invention comprises an ultrasonic base (1), a cleaning pool (2), a lifting frame (3), a first clamping seat (4) and a second clamping seat (5), wherein an ultrasonic generator (6) is installed inside the ultrasonic base (1), a cleaning pool (2) is provided above the ultrasonic base (1), lifting frames (3) are installed on both sides of the top of the cleaning pool (2), first supports (7) are symmetrically arranged inside the cleaning pool (2), two first supports (7) are connected to the lifting frames (3), first spacing adjustment mechanisms (8) are installed on the two first supports (7), second supports (9) are symmetrically installed on the first spacing adjustment mechanisms (8), and the two first supports (7) are symmetrically arranged on the first spacing adjustment mechanisms (8). The second supports (9) are all equipped with a second spacing adjustment mechanism (10), the second spacing adjustment mechanism (10) is symmetrically provided with a first clamping seat (4), the second support (9) is equipped with a first telescopic cylinder (11), the output end of the first telescopic cylinder (11) is equipped with a third support (12), a third spacing adjustment mechanism (13) is provided inside the third support (12), and the third spacing adjustment mechanism (13) is symmetrically provided with a second clamping seat (5), the two groups of the second clamping seats (5) are located between the two groups of the first clamping seats (4), and the first clamping seat (4) and the second clamping seat (5) are arranged in a line; A separation tank (14) is installed on one side of the ultrasonic base (1); the cleaning tank (2) is connected to the separation tank (14) via a discharge pipe (15); an isolation filter plate (16) is provided at the top of the separation tank (14); a return pipe (17) is installed at the bottom of the outer side of the separation tank (14); a water pump (18) is installed on one side wall of the cleaning tank (2); the upper end of the return pipe (17) is connected to the input end pipe of the water pump (18); and the output end pipe of the water pump (18) leads to the top of the cleaning tank (2).

2. The ultrasonic cleaning device for liquid crystal display production according to claim 1, characterized in that: The lifting frame (3) comprises a vertical support (301) and a second telescopic cylinder (302); the vertical support (301) is installed on the outside of the top of the cleaning pool (2); the second telescopic cylinder (302) is installed on the bottom of the vertical support (301); and the top of the first support (7) is installed at the output end of the second telescopic cylinder (302).

3. The ultrasonic cleaning device for liquid crystal display production according to claim 1, characterized in that: The first spacing adjustment mechanism (8), the second spacing adjustment mechanism (10) and the third spacing adjustment mechanism (13) have the same structure and all comprise a bidirectional screw rod (19) and a guide rod (20); the bidirectional screw rod (19) is rotatably mounted on one group of the first supports (7), two groups of the second supports (9) and two groups of the third supports (12), respectively; and the guide rod (20) is mounted on another group of the first supports (7), two groups of the second supports (9) and two groups of the third supports (12), respectively.

4. The ultrasonic cleaning device for liquid crystal display production according to claim 3, characterized in that: The two ends of the second support (9) are respectively connected to the bidirectional screw rod (19) and the guide rod (20) of the first spacing adjustment mechanism (8); the first clamping seat (4) is connected to the bidirectional screw rod (19) and the guide rod (20) of the second spacing adjustment mechanism (10) via the first movable seat (21); and the second clamping seat (5) is connected to the bidirectional screw rod (19) and the guide rod (20) of the third spacing adjustment mechanism (13) via the second movable seat (22).

5. The ultrasonic cleaning device for liquid crystal display production according to claim 1, characterized in that: The first clamping seat (4) and the second clamping seat (5) have the same structure, and both comprise a frame (23), a third telescopic cylinder (24), a spring (25) and a rubber sleeve (26). The third telescopic cylinder (24) is provided at the upper part of the frame (23). A connecting rod (27) is provided at the output end of the third telescopic cylinder (24). A rubber sleeve (26) is slidably sleeved on the outer side of the connecting rod (27). A spring (25) is provided inside the rubber sleeve (26). The upper end of the spring (25) is connected to the bottom of the connecting rod (27).

6. The ultrasonic cleaning device for liquid crystal display production according to claim 1, characterized in that: The isolation filter plate (16) has draw-out grooves (28) on both sides, and both ends of the isolation filter plate (16) are movably mounted in the draw-out grooves (28).

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