CN115318025A - Self-cleaning air filtering device for atmosphere pollution prevention and control - Google Patents

Abstract

The invention relates to the field of filters for separating particles from gas, in particular to a self-cleaning air filter device for preventing and controlling air pollution. A self-cleaning air filter device for air pollution prevention and control comprises a casing, a support assembly, a filter plate, a scraper, an adjustment structure and a drive structure. The support assembly includes a first connector, a second connector, and a bracket. In the present invention, after the dust is accumulated in front of the filter plate, under the action of the wind, the first connecting piece moves backwards, the vertical distance between the bracket and the filter plate is reduced, and the adjusting structure drives the scraper to quickly approach the filter plate to reach the two Abutting, the driving structure drives the scraper to move from the second end to the first end, so as to scrape the dust from the first connecting piece. In the case of no workers to clean up, the filter device can also automatically complete the cleaning work, to avoid due to the filter plate The effect of blockage on subsequent filtration work and filtration effect. It meets the requirements for the manufacture of special equipment for air pollution environmental protection, and promotes the development of advanced environmental protection industries.

Description

Self-cleaning air filter device for air pollution prevention and control

technical field

The invention relates to the field of filters for separating particles from gas, in particular to a self-cleaning air filter device for air pollution prevention and control.

Background technique

With the continuous and rapid development of China's economy, the urban process and the process of industrialization continue to increase, and the environmental pollution is becoming more and more serious. However, in the process of industrial production, a large amount of waste gas will be generated, and the waste gas contains dust. If it is discharged directly without treatment, it will cause serious pollution. pollute the air and cause harm to human health. Therefore, the country pays more and more attention to environmental protection. The advanced environmental protection industry has become an important strategic industry for the sustainable development of the country. The advanced environmental protection industry is the material basis and technical guarantee for saving energy resources, developing circular economy, and protecting the ecological environment. industry. The direction of air pollution prevention includes the manufacture of special equipment for air pollution environmental protection, the production and operation of environmental protection products, the integration of environmental protection technology and related service industries.

The special equipment for air pollution and environmental protection includes a filter device for treating waste gas, so as to avoid environmental pollution caused by dust discharge in the waste gas and harm to human health; but the filter screen in the filter device in the prior art is prone to clogging , the filter needs to be cleaned manually.

Contents of the invention

The invention provides a self-cleaning air filter device for prevention and control of air pollution, in order to solve the problem that the filter plate of the existing air filter device is blocked after a period of use and requires manual cleaning.

A self-cleaning air filter device for air pollution prevention and control of the present invention adopts the following technical scheme: it includes a housing, a support assembly, two filter plates and two cleaning mechanisms; The filter channel; the support assembly includes a first connecting piece arranged in the filtering channel, the first connecting piece is hinged with brackets on both sides facing the shell, and the second connecting piece is hinged at one end of the two brackets facing the shell; a second The connecting piece is slidably connected to the casing; the other second connecting piece is connected with a sealing structure to block the gap between the second connecting piece and the casing; the two filter plates are vertically arranged on the two brackets respectively. Front; the two vertical edges of the filter plate are respectively the first end and the second end; the first end is hinged to the first connecting piece; the second end is hinged to the second connecting piece; on the horizontal projection, it is connected to the same first connecting piece The bracket of the two connectors and the filter plate are always parallel; there is also an upper limit block between the first connector and the second connector, the upper limit block can slide left and right relative to the shell, the distance between the upper limit block and the first connector greater than the distance between the upper limit block and the second connector; the rear end of the upper limit block is provided with a first vertical rod inserted into the bracket; the front end of the upper limit block is provided with a second vertical rod inserted into the filter plate; When the first connecting piece is stressed, the bracket and the filter plate rotate around the first vertical rod and the second vertical rod respectively; at this time, the vertical distance between the filter plate and the bracket decreases; the two cleaning mechanisms are respectively arranged on two Filter plate; the cleaning mechanism includes a scraper, an adjustment structure and a drive structure; the scraper is vertically arranged in front of the filter plate; the scraper can move along the left and right directions or along the front and rear directions; the adjustment structure is configured between the filter plate and the bracket When the vertical distance decreases, the scraper quickly approaches the filter plate until they abut; the driving structure is configured to move the scraper from the second end to the first end when the vertical distance between the filter plate and the support decreases.

Further, the adjustment structure includes an installation rod, a first adjustment rod, a second adjustment rod and an adjustment wheel, the installation rod can be moved back and forth and can be moved left and right on the filter plate; the scraper is fixedly installed on the installation rod; the first adjustment rod One end is fixedly connected to the bracket, the other end is frictionally driven with the adjustment wheel, and one end of the second adjustment rod is slidably connected to the installation rod; the other end is always frictionally driven with the adjustment wheel; the adjustment wheel can rotate around its own axis and can be installed to move left and right filter plate.

Further, the drive assembly includes a drive disc, a telescopic rod and a drive rod; the telescopic rod is horizontally arranged between the bracket and the filter plate; one end of the telescopic rod is fixedly connected to the bracket, and the other end is frictionally connected to the drive disc; the drive disc is rotatably Installed on the filter plate; the drive rod and the drive plate are frictionally driven, and the installation rod can be moved and slidably installed on the drive rod.

Further, a slide rail is provided on the top of the filter plate, and the adjustment wheel is slidably arranged in the slide rail; a slide groove is provided on the installation rod, and the second adjustment rod is slidably arranged in the slide groove.

Further, a spring is provided between the second adjusting rod and the chute, and the spring makes the second adjusting rod always frictionally drive with the adjusting wheel.

Further, a return compression spring is connected to the rear of the first connecting member, and the other end of the return compression spring is connected to the shell.

Further, the blocking structure includes two baffles symmetrically front and back, one end of the baffles is hinged to the second connecting piece, and the other end of the baffles is slidably arranged in the housing.

Further, an ash collection pit is provided on the bottom wall of the casing, and the ash collection pit is located directly in front of the first connecting piece.

Further, there are two sets of support components, which are respectively located on the upper and lower sides of the filter plate, and the first vertical bar and the second vertical bar are also fixedly connected to a lower limit block; the lower limit block is connected to the shell so that it can move left and right.

Further, a cleaning mechanism includes two adjustment structures and two drive structures; the two adjustment structures are respectively arranged on the upper and lower sides of the filter plate; the two driving structures are also respectively arranged on the upper and lower sides of the filter plate.

The beneficial effects of the present invention are: a self-cleaning air filter device for air pollution prevention and control of the present invention, by arranging the bracket, the filter plate, the first connecting piece and the second connecting piece in a parallelogram structure, and using the first vertical rod And the second vertical bar is the rotation axis, so that after the dust is accumulated in front of the filter plate, under the action of the wind, the first connecting piece moves backward, the vertical distance between the bracket and the filter plate decreases, and then under the action of the adjustment structure , drive the scraper to quickly approach the filter plate until the two abut, and at the same time, the driving structure drives the scraper to move from the second end to the first end, so that the scraper scrapes the dust deposited on the filter plate from the filter plate to the first end One connection piece, the filter device can also automatically complete the cleaning work without workers cleaning, avoiding the subsequent filter work and filter effect affected by the clogging of the filter plate. It meets the requirements for the manufacture of special equipment for air pollution and environmental protection, and promotes the development of advanced environmental protection industries.

Further, after the scraper scrapes the dust to the first connecting piece, the exhaust gas easily passes through the filter plate, the wind force on the filter plate is reduced, and the return compression spring is released to automatically reset the filter plate, and the dust falls to the ash pit. At the same time, the distance between the filter plate and the support increases, and the scraper is far away from the filter plate, so that when the filter plate moves from the first end to the second end, the dust will not be scraped to the second end of the filter plate. Further guarantee the filtering effect and improve the filtering efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is the structural representation of the embodiment of a kind of air pollution prevention and control self-cleaning air filtering device of the present invention;

Fig. 2 is a sectional view of an embodiment of a self-cleaning air filter device for air pollution prevention and control of the present invention;

Fig. 3 is a schematic structural view of a support assembly, a filter plate and a cleaning structure in an embodiment of the present invention;

Figure 4 is an enlarged view of A in Figure 3;

Fig. 5 is a structural schematic diagram of a support assembly, a filter plate and a cleaning structure in an embodiment of the present invention;

Fig. 6 is an enlarged view of place B in Fig. 5;

FIG. 7 is a schematic structural view of an embodiment of the present invention in a working state;

Figure 8 is an enlarged view at C in Figure 7;

FIG. 9 is a schematic structural diagram of an embodiment of the present invention in a reset state;

Figure 10 is an enlarged view at D in Figure 9;

In the figure: 100, shell; 110, filter channel; 120, ash collection pit; 200, support assembly; 210, first connector; 220, second connector; 230, bracket; 300, plugging structure; 310, guide Flow plate; 400, filter plate; 401, slide rail; 410, first end; 420, second end; 430, upper limit block; 431, first vertical rod; 432, second vertical rod; 440, lower limit block 500, cleaning mechanism; 510, scraper; 520, adjustment structure; 521, first adjustment rod; 522, second adjustment rod; 523, installation rod; 524, adjustment wheel; 525, chute; 530, drive structure; 531, drive plate; 532, telescopic rod; 533, drive rod; 600, return stage clip.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

An embodiment of a self-cleaning air filter device for air pollution prevention and control of the present invention, as shown in FIGS. Arranged in the front and back directions, the housing 100 encloses a filter passage 110 for filtering dust in the air; the support assembly 200 includes a first connecting piece 210 arranged in the filtering passage 110, and the first connecting piece 210 is hinged on both sides facing the housing 100 Brackets 230, one end of the two brackets 230 facing the housing 100 is hinged with a second connecting piece 220; one second connecting piece 220 is slidably connected to the housing 100 back and forth; the other second connecting piece 220 is connected with a blocking structure 300, To block the gap between the second connector 220 and the housing 100; two filter plates 400 are vertically arranged in front of the two brackets 230 respectively; the two vertical edges of the filter plate 400 are respectively the first end 410 and the The second end 420; the first end 410 is hinged to the first connector 210; the second end 420 is hinged to the second connector 220; on the horizontal projection, the bracket 230 and the filter plate 400 connected to the same second connector 220 Always parallel; an upper limit block 430 is also provided between the first connector 210 and the second connector 220, the upper limit block 430 can slide left and right relative to the housing 100, and the distance between the upper limit block 430 and the first connector 210 is greater than The distance between the upper limit block 430 and the second connector 220; the rear end of the upper limit block 430 is provided with a first vertical rod 431 inserted into the bracket 230; the front end of the upper limit block 430 is provided with a filter plate 400 The second vertical rod 432; when the first connecting member 210 is stressed, the support 230 and the filter plate 400 rotate around the first vertical rod 431 and the second vertical rod 432 respectively; at this time, the distance between the filter plate 400 and the support 230 The vertical distance is reduced; the two cleaning mechanisms 500 are respectively arranged on the two filter plates 400; the cleaning mechanism 500 includes a scraper 510, an adjustment structure 520 and a driving structure 530; the scraper 510 is vertically arranged in front of the filter plate 400; the scraper 510 can move along the left and right directions or along the front and rear directions; the adjustment structure 520 is configured to make the scraper 510 quickly approach the filter plate 400 until the two abut against the filter plate 400 when the vertical distance between the filter plate 400 and the bracket 230 decreases; the driving structure 530 is configured The scraper 510 is configured to move from the second end 420 to the first end 410 when the vertical distance between the filter plate 400 and the bracket 230 decreases.

In this implementation, as shown in Figures 4, 6, 8, and 10, the adjusting structure 520 includes a mounting rod 523, a first adjusting rod 521, a second adjusting rod 522 and an adjusting wheel 524, and the mounting rod 523 can move back and forth and can move left and right The scraper 510 is fixedly installed on the mounting rod 523; one end of the first adjusting rod 521 is fixedly connected to the bracket 230, the other end is frictionally driven with the adjusting wheel 524, and one end of the second adjusting rod 522 is slidably Connected to the installation rod 523; the other end is always frictionally driven with the adjustment wheel 524; the adjustment wheel 524 can rotate around its own axis and can move left and right to install the filter plate 400; when the vertical distance between the filter plate 400 and the bracket 230 decreases, the first The adjustment rod 521 moves forward relative to the filter plate 400, driving the adjustment wheel 524 to rotate, and the rotation of the adjustment wheel 524 drives the second adjustment rod 522 to approach the filter plate 400, and the second adjustment rod 522 drives the scraper 510 to quickly approach the filter plate through the installation rod 523 400 and fit with it. .

In this implementation, as shown in Figure 6, the drive assembly includes a drive plate 531, a telescopic rod 532 and a drive rod 533; the telescopic rod 532 is horizontally arranged between the bracket 230 and the filter plate 400; one end of the telescopic rod 532 is fixedly connected to the bracket 230, the other end is frictionally connected to the drive plate 531; the drive plate 531 is rotatably mounted on the filter plate 400; the drive rod 533 and the drive plate 531 are frictionally driven, and the mounting rod 523 can be moved back and forth and slidably installed on the drive rod 533; the filter plate The reduction of the vertical distance between the 400 and the bracket 230 shortens the telescopic rod 532, thereby causing the drive plate 531 to rotate, thereby driving the drive rod 533 to move from the second end 420 to the first end 410, and driving the scraper 510 through the installation rod 523 Move from the second end 420 to the first end 410 and scrape the dust on the filter plate 400 to the vicinity of the first connecting piece 210 .

In this implementation, as shown in Figure 4, the upper end of the filter plate 400 is provided with a slide rail 401, and the adjustment wheel 524 is slidably arranged in the slide rail 401; Slidingly arranged on the slide groove 525 .

In this implementation, a spring is provided between the second adjusting rod 522 and the chute 525 , and the spring makes the second adjusting rod 522 frictionally drive with the adjusting wheel 524 all the time.

In this implementation, as shown in FIG. 5 , a return compression spring 600 is connected to the rear of the first connecting member 210 , and the other end of the return compression spring 600 is connected to the housing 100 . When the first connecting member 210 moves backward, the reset The pressure spring 600 stores force, when the dust is scraped by the scraper 510 to the vicinity of the first connecting piece 210, the backward force of the exhaust gas on the filter plate 400 is reduced, and the reset compression spring 600 is released, driving the first connecting piece 210 to return to the initial position .

In this implementation, as shown in Figures 2, 3, 7, and 9, the blocking structure 300 includes two front and rear symmetrical deflectors 310, one end of the deflectors 310 is hinged to the second connecting piece 220, and the deflectors 310 The other end is slidably disposed on the housing 100 back and forth. In the process of moving the first connecting part 210, the deflector 310 always seals the gap between the connected second connecting part 220 and the housing 100, and guides the received exhaust gas to the filter plate 400, ensuring Filtering effect.

In this implementation, as shown in FIG. 2 , an ash collection pit 120 is provided on the bottom wall of the casing 100 , and the ash collection pit 120 is located directly in front of the first connecting member 210 . In the reset process of a self-cleaning air filter device for air pollution prevention and control, the dust falls off the filter plate 400 and falls into the ash collection pit 120 .

In this implementation, as shown in FIG. 5 , two sets of support assemblies 200 are provided, which are respectively located on the upper and lower sides of the filter plate 400 . ; The lower limit block 440 is connected to the housing 100 to move left and right, so that the filter plate 400 always maintains a vertical state to ensure the filtering effect.

In this implementation, as shown in Figure 5, a cleaning mechanism 500 includes two adjustment structures 520 and two drive structures 530; the two adjustment structures 520 are respectively arranged on the upper and lower sides of the filter plate 400; the two drive structures 530 They are also respectively arranged on the upper and lower sides of the filter plate 400, so that after the filter plate 400 moves under force, the movement of the scraper 510 relative to the aluminum plate is more stable, and no jamming occurs due to asynchronous up and down movement.

In conjunction with above-mentioned embodiment, the use principle of the present invention and working process are as follows: waste gas is passed into a kind of self-cleaning air filter device for prevention and control of atmospheric pollution from the front end of filter channel 110, when waste gas passes filter plate 400, the dust in the waste gas is deposited on On the filter plate 400 , the dust-free exhaust gas is discharged from the rear end of the filter channel 110 through the filter plate 400 . When there is a lot of dust deposited on the filter plate 400 and the exhaust gas passes through the filter plate 400, the filter plate 400 will be subjected to a backward force. Since the distance between the upper limit block 430 and the lower limit block 440 and the first connecting piece 210 is greater than the distance between the two and the second connecting piece 220, the first end 410 of the filter plate 400 is subjected to a backward force. greater than the second end 420, the first connecting piece 210 has a tendency to move backward, and as the dust deposition increases, the backward tendency of the first connecting piece 210 increases until it breaks through the gap between the first connecting piece 210 and the housing 100 Friction, backward movement. During this process, the bracket 230 and the filter plate 400 rotate around the first vertical bar 431 and the second vertical bar 432 respectively; the shape of the bracket 230, the first connector 210, the filter plate 400 and the second connector 220 on the horizontal projection Changing from a rectangle to a parallelogram, the vertical distance between the filter plate 400 and the bracket 230 decreases, the first adjustment rod 521 moves forward relative to the filter plate 400, and drives the adjustment wheel 524 to rotate, and the rotation of the adjustment wheel 524 drives the second adjustment rod 522 Approaching the filter plate 400 , the second adjusting rod 522 drives the scraper 510 to quickly approach the filter plate 400 through the mounting rod 523 and stick to it. The reduction of the vertical distance between the filter plate 400 and the bracket 230 shortens the telescopic rod 532, thereby causing the drive plate 531 to rotate, thereby driving the drive rod 533 to move from the second end 420 to the first end 410, and driving the scraper through the installation rod 523. The plate 510 moves from the second end 420 to the first end 410 and scrapes the dust on the filter plate 400 towards the vicinity of the first connecting member 210 . Since the first connecting part 210 is forced to move backward, while the first connecting part 210 is moving backward, the return compression spring 600 is charged. When the dust is scraped by the scraper 510 near the first connecting part 210, the exhaust gas will The backward force of the filter plate 400 is reduced, and the reset compression spring 600 is released, driving the first connecting member 210 to return to the initial position. The shapes of the bracket 230 , the first connecting piece 210 , the filter plate 400 and the second connecting piece 220 recover to a rectangle in horizontal projection. At this time, the vertical distance between the bracket 230 and the filter plate 400 increases, and the scraper 510 is driven by the adjustment structure 520 to quickly move away from the filter plate 400; The two ends 420 move until the initial state is restored. During this process, since the scraper 510 is already far away from the filter plate 400 , the scraper 510 will not scrape the dust from the first connecting member 210 to both sides. During the reset process, the dust breaks off and falls into the ash collection pit 120 . A self-cleaning job is finished. Continue to filter under normal conditions.

During the movement of the first connecting part 210, the side of the baffle 310 connected to the housing 100 slides relative to the housing 100, and the baffle 310 always seals the gap between the connected second connecting part 220 and the housing 100, And the received waste gas is guided to the filter plate 400 to ensure the filtering effect.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (10)

1. The utility model provides an atmosphere pollution prevention and cure is with automatically cleaning air filter equipment which characterized in that: comprises a shell, a supporting component, two filter plates and two cleaning mechanisms;

the shell is arranged along the front-back direction, and a filtering channel for filtering dust in air is surrounded by the shell;

the supporting assembly comprises a first connecting piece arranged in the filtering channel, the two sides of the first connecting piece facing the outer shell are both hinged with a support, and one ends of the two supports facing the outer shell are both hinged with a second connecting piece; a second link slidably connected to the housing in a back-and-forth manner; the other second connecting piece is connected with a blocking structure to block a gap between the second connecting piece and the shell;

the two filter plates are respectively and vertically arranged in front of the two brackets; two vertical edges of the filter plate are respectively a first end and a second end; the first end is hinged with the first connecting piece; the second end is hinged with the second connecting piece; on the horizontal projection, the bracket and the filter plate which are connected with the same second connecting piece are always parallel; an upper limiting block is further arranged between the first connecting piece and the second connecting piece, the upper limiting block can slide left and right relative to the shell, and the distance between the upper limiting block and the first connecting piece is larger than the distance between the upper limiting block and the second connecting piece; the rear end of the upper limiting block is provided with a first vertical rod inserted in the bracket; the front end of the upper limiting block is provided with a second vertical rod inserted in the filter plate; when the first connecting piece is stressed, the support and the filter plate respectively rotate around the first vertical rod and the second vertical rod; at the moment, the vertical distance between the filter plate and the bracket is reduced;

the two cleaning mechanisms are respectively arranged on the two filter plates; the cleaning mechanism comprises a scraper blade, an adjusting structure and a driving structure; the scraping plate is vertically arranged in front of the filter plate; the scraper can move along the left and right directions and the front and back directions; the adjusting structure is configured to enable the scraper to be quickly close to the filter plate until the filter plate and the support are abutted when the vertical distance between the filter plate and the support is reduced; the drive structure is configured to move the scraper from the second end to the first end as a vertical distance between the filter plate and the holder decreases.

2. A self-cleaning air filtering device for preventing and treating atmospheric pollution as recited in claim 1, wherein: the adjusting structure comprises an installation rod, a first adjusting rod, a second adjusting rod and an adjusting wheel, wherein the installation rod is arranged on the filter plate in a manner of moving forwards and backwards and moving leftwards and rightwards; the scraper is fixedly arranged on the mounting rod; one end of the first adjusting rod is fixedly connected to the bracket, the other end of the first adjusting rod is in friction transmission with the adjusting wheel, and one end of the second adjusting rod is slidably connected to the mounting rod; the other end is always in friction transmission with the adjusting wheel; the adjusting wheel can rotate around the axis of the adjusting wheel and can be installed with the filter plate in a left-right moving way.

3. A self-cleaning air filtering device for preventing and treating atmospheric pollution as recited in claim 2, wherein: the driving assembly comprises a driving disc, a telescopic rod and a driving rod; the telescopic rod is horizontally arranged between the bracket and the filter plate; one end of the telescopic rod is fixedly connected to the bracket, and the other end of the telescopic rod is connected to the driving disc in a friction transmission manner; the driving disc is rotatably arranged on the filter plate; the driving rod and the driving disk are in friction transmission, and the mounting rod is mounted on the driving rod in a sliding manner in a manner of moving back and forth.

4. A self-cleaning air filtering device for preventing and treating atmospheric pollution as recited in claim 3, wherein: the upper end of the filter plate is provided with a slide rail, and the adjusting wheel is arranged in the slide rail in a sliding way; the mounting rod is provided with a sliding groove, and the second adjusting rod is slidably arranged in the sliding groove.

5. The self-cleaning air filtering device for preventing and treating atmospheric pollution of claim 4, wherein: a spring is arranged between the second adjusting rod and the sliding chute, and the spring enables the second adjusting rod to be in friction transmission with the adjusting wheel all the time.

6. A self-cleaning air filtering device for preventing and treating atmospheric pollution, as claimed in any one of claims 1 to 5, wherein: the rear of the first connecting piece is connected with a reset pressure spring, and the other end of the reset pressure spring is connected to the shell.

7. The self-cleaning air filtering device for preventing and treating atmospheric pollution of claim 6, wherein: the plugging structure comprises two guide plates which are symmetrical front and back, one end of each guide plate is hinged to the second connecting piece, and the other end of each guide plate is arranged on the shell in a front-back sliding mode.

8. The self-cleaning air filtering device for preventing and treating atmospheric pollution of claim 6, wherein: the bottom wall of the shell is provided with a dust collecting pit which is positioned right ahead the first connecting piece.

9. The self-cleaning air filtering device for preventing and treating atmospheric pollution of claim 6, wherein: two groups of supporting components are arranged and are respectively positioned at the upper side and the lower side of the filter plate, and lower limiting blocks are fixedly connected below the first vertical rod and the second vertical rod; the lower limit block is connected to the outer shell in a manner of moving left and right.

10. A self-cleaning air filtering device for preventing and treating atmospheric pollution as claimed in claim 9, wherein: one cleaning mechanism comprises two adjusting structures and two driving structures; the two adjusting structures are respectively arranged on the upper side and the lower side of the filter plate; the two driving structures are also respectively arranged on the upper side and the lower side of the filter plate.

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