CN118462847A - A double plate sealing gate valve to avoid clogging - Google Patents

Abstract

The invention discloses a double-flat-plate sealing gate valve capable of avoiding blockage, which relates to the technical field of double-flat-plate sealing gate valves, and can prevent impurities in a medium from being blocked and be trapped in a rectangular groove under the filtering action of a filter plate when the medium passes through an inlet, so that the blockage of a double-flat-plate sealing gate valve body can be avoided, the damage of the internal structure of the double-flat-plate sealing gate valve body can be avoided, and the use effect and the service life of the double-flat-plate sealing gate valve body can be ensured; be convenient for push into and collect the impurity in the rectangular channel, use convenient and fast more, simultaneously, can carry out reverse clearance of blowing to the filter for to the higher, better effect of impurity clearance, avoid the jam of filter, and then guarantee its filterable efficiency and effect, when avoiding the jam of two dull and stereotyped seal gate valve bodies, guarantee the effect that the medium passed through.

Description

A double plate sealing gate valve to avoid clogging

Technical Field

The invention relates to the technical field of double-plate sealing gate valves, in particular to a double-plate sealing gate valve which can avoid blockage.

Background Art

Double plate sealing gate valve is a gate valve that uses double plate structure as sealing element. This valve forms a tight seal in the closed state through two parallel and mutually fitting gate plates and a matching wedge device, thereby effectively preventing medium leakage. When the valve is opened, the gate plate will rise along the guide rail of the valve seat, so that the valve channel is opened and the medium can flow.

However, when the existing double-plate sealing gate valve is in use, there are often some impurities in the medium. When the impurities enter the valve, it is easy to cause blockage inside the valve and damage its internal structure, affecting its use effect and life.

Summary of the invention

The object of the present invention is to provide a double-plate sealing gate valve which can avoid clogging, so as to solve the problems mentioned in the above background technology.

To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a double-plate sealed gate valve for avoiding blockage, comprising an inlet and an outlet arranged on the double-plate sealed gate valve body, the side wall of the inlet is provided with a notch, and a fixed cover is fixedly inserted in the notch, the inlet is connected to the interior of the fixed cover, and the side wall of the fixed cover is connected with a movable plate through a movable mechanism, the bottom of the movable plate is connected with a sliding plate through a telescopic mechanism, and the sliding plate is inserted in the fixed cover, the side wall of the sliding plate is provided with a through hole and a rectangular groove, and a filter plate is connected in the rectangular groove through a sliding mechanism, the side wall of the fixed cover is connected with a push plate through a reset mechanism, and the movement of the push plate is pushed by the push mechanism, the side wall of the push plate is provided with an adsorption mechanism for adsorbing the filter plate, the side wall of the push plate is provided with a blowing mechanism for reverse blowing and cleaning the filter plate, and the side wall of the fixed cover is provided with a collecting mechanism for collecting the cleaned impurities.

Preferably, the moving mechanism includes two symmetrically arranged first connecting blocks fixedly connected to the side walls of the fixed cover, and the top of the first connecting block is fixedly connected to the first T-shaped guide rod, the side wall of each of the first T-shaped guide rods is sleeved with a second connecting block, and the second connecting block is fixed to the side wall of the moving plate, the side wall of each of the first T-shaped guide rods is sleeved with a first spring, the side wall of the first connecting block is fixedly connected to an electromagnet, and the side wall of the second connecting block is fixedly connected to an iron block.

Preferably, the telescopic mechanism comprises two symmetrically arranged second T-shaped guide rods fixedly connected to the top of the sliding plate, the movable plate is sleeved on the side walls of the second T-shaped guide rods, and the side walls of each second T-shaped guide rod are sleeved with a second spring.

Preferably, the sliding mechanism comprises a sliding groove opened at the top of the rectangular groove, and a sliding block is slidably connected in the sliding groove, the sliding block is fixed to the top of the filter plate, and stoppers are fixedly connected at both ends of the sliding groove.

Preferably, the reset mechanism includes an L-shaped plate fixedly connected to the side wall of the fixed cover, and the side wall of the L-shaped plate is fixedly connected to two symmetrically arranged sleeves, a sleeve rod is inserted into the sleeve, the other end of the sleeve rod is fixed to the side wall of the push plate, and the side wall of each sleeve is sleeved with a third spring.

Preferably, the pushing mechanism includes a connecting frame fixedly connected to the side wall of the pushing plate, and the side wall of the connecting frame is fixedly connected to a pushing block, the top of the pushing block is provided with an inclined surface, the side wall of the second connecting block is fixedly connected to an L-shaped frame, and the side wall of the L-shaped frame is fixedly connected to a pushing pin.

Preferably, the adsorption mechanism comprises two symmetrically arranged mounting grooves opened on the side wall of the push plate, and magnetic blocks are fixedly inserted in the mounting grooves.

Preferably, the blowing mechanism includes a cavity opened in the pushing plate, and the side wall of the pushing plate is provided with a plurality of blowing holes arranged in an array, the blowing holes are connected to the cavity, and a driving mechanism for driving the blowing holes for blowing is provided on the top of the sliding plate.

Preferably, the driving mechanism includes an air storage box fixedly connected to the top of the sliding plate, and a piston is slidably connected in the air storage box, the top of the piston is fixedly connected to a connecting rod, and the upper end of the connecting rod is fixed to the bottom of the movable plate, the side wall of the air storage box is fixedly connected to an air inlet pipe and an air outlet pipe, the other end of the air outlet pipe is fixedly connected to a hose, and the other end of the hose is fixedly inserted in the side wall of the pushing plate and connected to the cavity, a first one-way valve is provided in the air inlet pipe, and a second one-way valve is provided in the air outlet pipe.

Preferably, the collecting mechanism comprises a connecting plate fixedly connected to a side wall of the fixed cover, and a collecting box is fixedly connected to the side wall of the connecting plate.

Compared with the prior art, the present invention has the following beneficial effects:

The double-plate sealed gate valve for avoiding blockage is provided with a pushing mechanism, etc. When in use, the medium enters the fixed cover through the inlet and flows out through the outlet. When the medium passes through the inlet, it will enter the rectangular groove. Under the filtering effect of the filter plate, the impurities in the medium can be blocked and trapped in the rectangular groove, thereby avoiding the blockage of the double-plate sealed gate valve body and avoiding the damage of the internal structure of the double-plate sealed gate valve body, thereby ensuring its use effect and life. When it is necessary to clean the impurities in the rectangular groove, the electromagnet is energized. After being energized, the electromagnet attracts the iron block, so that the movable plate moves downward, and the sliding plate is driven to slide downward along the fixed cover through the telescopic mechanism. At the same time, the first spring is compressed. When the first spring can no longer be compressed, the sliding plate no longer moves downward. At this time, the rectangular groove is aligned with the pushing plate, and at the same time, the through hole is aligned with the inlet, thereby ensuring the normal passage of the medium. Moreover, the pushing pin contacts the inclined surface, and when the movable plate continues to move downward, the sliding plate is pushed downward. When moving downward, the second spring is gradually compressed. At the same time, the pushing pin is against the inclined surface and slides downward on its surface, thereby pushing the pushing block to move, and then driving the pushing plate to move into the rectangular groove through the connecting frame. At the same time, the third spring is compressed and pushes the filter plate to move synchronously, so that the impurities in the rectangular groove can be pushed into the collection box for collection. After cleaning is completed, the electromagnet is powered off. At this time, the moving plate can move upward and reset under the action of the second spring, so that the pushing pin slides upward along the inclined surface, so that the pushing plate can move and reset under the action of the third spring, and through the adsorption effect of the magnetic block, the filter plate can be driven to move and reset synchronously. When the pushing plate withdraws from the rectangular groove, the sliding plate can move upward and reset under the action of the first spring, and align the rectangular groove with the inlet to ensure the filtering effect, thereby avoiding blockage of the double-plate sealing gate valve body, and facilitating the cleaning and collection of filtered impurities, which is more convenient and quick to use.

This double-plate sealing gate valve that avoids clogging is provided with a blowing mechanism, etc., when cleaning impurities in the rectangular groove, when the pushing plate is attached to the filter plate and pushed to move, the second spring is gradually compressed. At this time, the distance between the moving plate and the sliding plate gradually becomes smaller, so that the piston can be pushed downward along the air storage box through the connecting rod and the air temporarily stored in the air storage box is squeezed. At the same time, the first one-way valve is closed and the second one-way valve is opened. At this time, the air in the air storage box enters the cavity after passing through the air outlet pipe and the hose, and is blown onto the back of the filter plate through the blowing hole. In this way, the filter plate can be automatically back-blown and cleaned, making the impurity cleaning more efficient and effective, avoiding clogging of the filter plate, thereby ensuring the efficiency and effect of its filtration, avoiding clogging of the double-plate sealing gate valve body, and ensuring the effect of medium passage. After the cleaning is completed, when the movable plate moves upward and resets under the action of the second spring, the piston is driven by the connecting rod to move upward along the air storage box, so that negative pressure is generated in the air storage box. At the same time, the first one-way valve is opened and the second one-way valve is closed, so that external air enters the air storage box through the intake pipe for temporary storage.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the overall structure of the present invention;

FIG2 is a schematic diagram showing the positions of the moving mechanism and the telescopic mechanism in the present invention;

FIG3 is a schematic diagram of the structure of the driving mechanism of the present invention;

FIG4 is a partial cross-sectional structural schematic diagram of the fixed cover in the present invention;

FIG5 is an enlarged schematic diagram of the structure at A in FIG2;

FIG6 is an enlarged schematic diagram of the structure at B in FIG2;

FIG7 is an enlarged schematic diagram of the structure at C in FIG4;

FIG. 8 is an enlarged structural schematic diagram of point D in FIG. 4 .

In the figure: 1, double plate sealing gate valve body; 101, inlet; 102, outlet; 201, second T-shaped guide rod; 202, second spring; 301, first connecting block; 302, first T-shaped guide rod; 303, second connecting block; 304, first spring; 305, electromagnet; 306, iron block; 401, L-shaped plate; 402, sleeve rod; 403, sleeve; 404, third spring; 501, connecting frame; 502, push block; 503, inclined surface; 504, L-shaped frame; 505, push Pin; 601, sliding groove; 602, sliding block; 603, stopper; 701, mounting groove; 702, magnetic block; 801, cavity; 802, blowing hole; 901, air storage box; 902, piston; 903, air inlet pipe; 904, air outlet pipe; 905, hose; 906, connecting rod; 1001, connecting plate; 1002, collecting box; 11, notch; 12, fixed cover; 13, sliding plate; 14, moving plate; 15, filter plate; 16, pushing plate; 17, rectangular groove; 18, through hole.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Please refer to Figures 1 to 8. The present invention provides a technical solution: a double-plate sealed gate valve for avoiding clogging, comprising an inlet 101 and an outlet 102 arranged on a double-plate sealed gate valve body 1, a notch 11 is provided on the side wall of the inlet 101, and a fixed cover 12 is fixedly inserted in the notch 11, the inlet 101 is communicated with the interior of the fixed cover 12, and the side wall of the fixed cover 12 is connected with a movable plate 14 through a movable mechanism, the bottom of the movable plate 14 is connected with a sliding plate 13 through a telescopic mechanism, and the sliding plate 13 is inserted in the fixed cover 12, the side wall of the sliding plate 13 is provided with a through hole 18 and a rectangular groove 17, and a filter plate 15 is connected in the rectangular groove 17 through a sliding mechanism, the side wall of the fixed cover 12 is connected with a push plate 16 through a reset mechanism, and the movement of the push plate 16 is pushed by the push mechanism, and the side wall of the push plate 16 is provided with an adsorption mechanism for adsorbing the filter plate 15, The side wall of the push plate 16 is provided with a blowing mechanism for reverse blowing and cleaning the filter plate 15, and the side wall of the fixed cover 12 is provided with a collecting mechanism for collecting the cleaned impurities. When the medium passes through the inlet 101, under the filtering action of the filter plate 15, the impurities in the medium can be blocked and can be trapped in the rectangular groove 17, thereby avoiding the blockage of the double-plate sealed gate valve body 1, and avoiding the damage to the internal structure of the double-plate sealed gate valve body 1, ensuring its use effect and life; it is convenient to push and collect the impurities in the rectangular groove 17, and the use is more convenient and quick. At the same time, the filter plate 15 can be reverse blown and cleaned, so that the efficiency and effect of impurity cleaning are higher, the blockage of the filter plate 15 is avoided, and the filtration efficiency and effect are ensured, and the blockage of the double-plate sealed gate valve body 1 is avoided while ensuring the effect of medium passing.

The moving mechanism includes two symmetrically arranged first connecting blocks 301 fixedly connected to the side walls of the fixed cover 12, and the top of the first connecting block 301 is fixedly connected to the first T-shaped guide rod 302, the side wall of each first T-shaped guide rod 302 is sleeved with a second connecting block 303, and the second connecting block 303 is fixed to the side wall of the moving plate 14, and the side wall of each first T-shaped guide rod 302 is sleeved with a first spring 304, the side wall of the first connecting block 301 is fixedly connected to an electromagnet 305, and the side wall of the second connecting block 303 is fixedly connected to an iron block 306. When it is necessary to clean the impurities in the rectangular groove 17, the electromagnet 305 is energized, and after the electromagnet 305 is energized, it attracts the iron block 306, so that the moving plate 14 moves downward.

The telescopic mechanism includes two symmetrically arranged second T-shaped guide rods 201 fixedly connected to the top of the sliding plate 13, the movable plate 14 is sleeved on the side walls of the second T-shaped guide rods 201, and the side walls of each second T-shaped guide rod 201 are sleeved with a second spring 202. When the movable plate 14 moves downward, the sliding plate 13 is driven to slide downward along the fixed cover 12 through the telescopic mechanism. At the same time, the first spring 304 is compressed, and the elastic coefficient of the second spring 202 is greater than the elastic coefficient of the first spring 304, ensuring that the second spring 202 will be compressed only when the first spring 304 is no longer compressed.

The sliding mechanism includes a sliding groove 601 opened at the top of the rectangular groove 17, and a sliding block 602 is slidably connected in the sliding groove 601. The sliding block 602 is fixed to the top of the filter plate 15, and the two ends of the sliding groove 601 are fixedly connected with a stopper 603, which guides and limits the movement of the filter plate 15.

The reset mechanism includes an L-shaped plate 401 fixedly connected to the side wall of the fixed cover 12, and the side wall of the L-shaped plate 401 is fixedly connected to two symmetrically arranged sleeves 403, a sleeve rod 402 is inserted into the sleeve 403, and the other end of the sleeve rod 402 is fixed to the side wall of the push plate 16, and the side wall of each sleeve 403 is sleeved with a third spring 404, which plays a guiding and reset role in the movement of the push plate 16.

The pushing mechanism includes a connecting frame 501 fixedly connected to the side wall of the pushing plate 16, and the side wall of the connecting frame 501 is fixedly connected with a pushing block 502, the top of the pushing block 502 is provided with an inclined surface 503, the side wall of the second connecting block 303 is fixedly connected with an L-shaped frame 504, and the side wall of the L-shaped frame 504 is fixedly connected with a pushing pin 505. When the sliding plate 13 no longer moves downward, the pushing pin 505 contacts the inclined surface 503. When the moving plate 14 continues to move downward, the second spring 202 is gradually compressed. At the same time, the pushing pin 505 abuts against the inclined surface 503 and slides downward on its surface, thereby pushing the pushing block 502 to move.

The adsorption mechanism includes two symmetrically arranged mounting grooves 701 opened on the side wall of the push plate 16, and a magnetic block 702 is fixedly inserted in the mounting groove 701. After cleaning is completed, when the push plate 16 moves to reset, the magnetic block 702 can adsorb the filter plate 15, thereby driving the filter plate 15 to move synchronously and reset.

The blowing mechanism includes a cavity 801 opened in the push plate 16, and the side wall of the push plate 16 is provided with a plurality of blowing holes 802 arranged in an array, the blowing holes 802 are connected to the cavity 801, and the top of the sliding plate 13 is provided with a driving mechanism for driving the blowing holes 802 to blow air. When the impurities in the rectangular groove 17 are cleaned, when the push plate 16 is attached to the filter plate 15 and pushed to move, the second spring 202 is gradually compressed. At this time, the distance between the moving plate 14 and the sliding plate 13 gradually becomes smaller, and the blowing holes 802 are driven by the driving mechanism to perform reverse blowing cleaning on the filter plate 15, so that the impurity cleaning efficiency is higher and the effect is better, and the clogging of the filter plate 15 is avoided, thereby ensuring the efficiency and effect of its filtration, avoiding the clogging of the double flat plate sealing gate valve body 1 while ensuring the effect of medium passing.

The driving mechanism includes an air storage box 901 fixedly connected to the top of the sliding plate 13, and a piston 902 is slidably connected in the air storage box 901, a connecting rod 906 is fixedly connected to the top of the piston 902, and the upper end of the connecting rod 906 is fixed to the bottom of the movable plate 14, the side wall of the air storage box 901 is fixedly connected to an air inlet pipe 903 and an air outlet pipe 904, the other end of the air outlet pipe 904 is fixedly connected to a hose 905, and the other end of the hose 905 is fixedly inserted in the side wall of the push plate 16 and communicated with the cavity 801, a first one-way valve is arranged in the air inlet pipe 903, and the conducting direction of the first one-way valve is from the outside to the air storage box 901, and a second one-way valve is arranged in the air outlet pipe 904, and the conducting direction of the second one-way valve is from the air storage box 901 to the hose 905. When the impurities in the rectangular groove 17 are cleaned, the push plate 16 is attached to the filter plate 15 and pushed to move When the second spring 202 is in motion, the second spring 202 is gradually compressed. At this time, the distance between the movable plate 14 and the sliding plate 13 gradually becomes smaller, so that the piston 902 can be pushed by the connecting rod 906 to move downward along the air storage box 901 and squeeze the air temporarily stored in the air storage box 901. At the same time, the first one-way valve is closed and the second one-way valve is opened. At this time, the air in the air storage box 901 enters the cavity 801 through the air outlet pipe 904 and the hose 905, and is blown onto the back side of the filter plate 15 through the blowing hole 802. After cleaning, when the movable plate 14 moves upward and resets under the action of the second spring 202, the piston 902 is driven by the connecting rod 906 to move upward along the air storage box 901, so that negative pressure is generated in the air storage box 901. At the same time, the first one-way valve is opened and the second one-way valve is closed, so that the external air enters the air storage box 901 through the air inlet pipe 903 and is temporarily stored.

The collecting mechanism includes a connecting plate 1001 fixedly connected to the side wall of the fixed cover 12, and a collecting box 1002 is fixedly connected to the side wall of the connecting plate 1001 to facilitate the collection of the cleaned impurities.

Working principle: When in use, the medium enters the fixed cover 12 through the inlet 101 and flows out through the outlet 102. When the medium passes through the inlet 101, it will enter the rectangular groove 17. Under the filtering effect of the filter plate 15, the impurities in the medium can be blocked and trapped in the rectangular groove 17, thereby avoiding the blockage of the double flat plate sealing gate valve body 1 and avoiding the damage of the internal structure of the double flat plate sealing gate valve body 1, thereby ensuring its use effect and life;

When it is necessary to clean the impurities in the rectangular groove 17, the electromagnet 305 is energized, and the electromagnet 305 attracts the iron block 306 after being energized, so that the movable plate 14 moves downward, and drives the sliding plate 13 to slide downward along the fixed cover 12 through the telescopic mechanism. At the same time, the first spring 304 is compressed. When the first spring 304 can no longer be compressed, the sliding plate 13 no longer moves downward. At this time, the rectangular groove 17 is aligned with the push plate 16, and the through hole 18 is aligned with the inlet 101, so as to ensure the normal passage of the medium. Moreover, the push pin 505 contacts the inclined surface 503. When the moving plate 14 continues to move downward, the second spring 202 is gradually compressed. At the same time, the push pin 505 abuts against the inclined surface 503 and slides downward on its surface, thereby pushing the push block 502 to move, and then driving the push plate 16 to move into the rectangular groove 17 through the connecting frame 501. At the same time, the third spring 404 is compressed and pushes the filter plate 15 to move synchronously, so that the impurities in the rectangular groove 17 can be pushed into the collection box 1002 for collection;

At the same time, when the impurities in the rectangular groove 17 are cleaned, when the push plate 16 is attached to the filter plate 15 and pushed to move, the second spring 202 is gradually compressed. At this time, the distance between the moving plate 14 and the sliding plate 13 gradually becomes smaller, so that the piston 902 can be pushed downward along the air storage box 901 through the connecting rod 906 and the air temporarily stored in the air storage box 901 is squeezed. At the same time, the first one-way valve is closed and the second one-way valve is opened. At this time, the air in the air storage box 901 passes through the air outlet pipe 904 and the hose 905 and enters the cavity 801, and is blown on the back of the filter plate 15 through the blowing hole 802, so that the filter plate 15 can be automatically back-blown and cleaned, so that the efficiency and effect of cleaning impurities are higher, the blockage of the filter plate 15 is avoided, and the efficiency and effect of its filtration are guaranteed, and the blockage of the double flat plate sealing gate valve body 1 is avoided while ensuring the effect of medium passing;

After the cleaning is completed, the electromagnet 305 is powered off. At this time, the moving plate 14 can move upward and reset under the action of the second spring 202, so that the push pin 505 slides upward along the inclined surface 503, so that the push plate 16 can move and reset under the action of the third spring 404, and through the adsorption effect of the magnetic block 702, the filter plate 15 can be driven to move and reset synchronously. When the push plate 16 withdraws from the rectangular groove 17, the sliding plate 13 can move upward and reset under the action of the first spring 304, and the rectangular groove 17 is aligned with the inlet 101 to ensure the filtering effect, thereby avoiding the blockage of the double flat plate sealing gate valve body 1, and it is convenient to clean and collect the filtered impurities, which is more convenient and quick to use.

Furthermore, when the movable plate 14 moves upward and resets under the action of the second spring 202, the piston 902 is driven to move upward along the air storage box 901 through the connecting rod 906, so that negative pressure is generated in the air storage box 901. At the same time, the first one-way valve is opened and the second one-way valve is closed, so that external air enters the air storage box 901 through the intake pipe 903 and is temporarily stored.

Claims (10)

1. A double-plate sealing gate valve for preventing blockage, comprising an inlet (101) and an outlet (102) arranged on a double-plate sealing gate valve body (1), characterized in that: a notch (11) is provided on a side wall of the inlet (101), and a fixed cover (12) is fixedly inserted in the notch (11), the inlet (101) is communicated with the interior of the fixed cover (12), and the side wall of the fixed cover (12) is connected to a moving plate (14) via a moving mechanism, the bottom of the moving plate (14) is connected to a sliding plate (13) via a telescopic mechanism, and the sliding plate (13) is inserted in the fixed cover (12), and the sliding plate (13) is inserted in the fixed cover (12), and the sliding plate (13) is inserted in the fixed cover (12), and the sliding plate (13) is inserted in the fixed cover (12), and the sliding plate (13) is inserted in the fixed cover (12). A through hole (18) and a rectangular groove (17) are provided on the side wall of the fixed cover (13), and a filter plate (15) is connected to the rectangular groove (17) via a sliding mechanism, the side wall of the fixed cover (12) is connected to a push plate (16) via a reset mechanism, and the movement of the push plate (16) is pushed by the push mechanism, the side wall of the push plate (16) is provided with an adsorption mechanism for adsorbing the filter plate (15), the side wall of the push plate (16) is provided with an air blowing mechanism for reverse air blowing and cleaning the filter plate (15), and the side wall of the fixed cover (12) is provided with a collection mechanism for collecting cleaned impurities. 2. A double-plate sealing gate valve for avoiding clogging according to claim 1, characterized in that: the moving mechanism comprises two symmetrically arranged first connecting blocks (301) fixedly connected to the side wall of the fixed cover (12), and the top of the first connecting block (301) is fixedly connected to the first T-shaped guide rod (302), the side wall of each of the first T-shaped guide rods (302) is sleeved with a second connecting block (303), and the second connecting block (303) is fixed to the side wall of the moving plate (14), the side wall of each of the first T-shaped guide rods (302) is sleeved with a first spring (304), the side wall of the first connecting block (301) is fixedly connected to an electromagnet (305), and the side wall of the second connecting block (303) is fixedly connected to an iron block (306). 3. A double-plate sealing gate valve for avoiding blockage according to claim 1, characterized in that: the telescopic mechanism comprises two symmetrically arranged second T-shaped guide rods (201) fixedly connected to the top of the sliding plate (13), the movable plate (14) is sleeved on the side walls of the second T-shaped guide rods (201), and the side walls of each second T-shaped guide rod (201) are sleeved with a second spring (202). 4. A double-plate sealing gate valve for avoiding clogging according to claim 1, characterized in that: the sliding mechanism comprises a sliding groove (601) opened at the top of the rectangular groove (17), and a sliding block (602) is slidably connected in the sliding groove (601), the sliding block (602) is fixed to the top of the filter plate (15), and stoppers (603) are fixedly connected at both ends of the sliding groove (601). 5. A double-plate sealing gate valve for avoiding blockage according to claim 1, characterized in that: the reset mechanism comprises an L-shaped plate (401) fixedly connected to the side wall of the fixed cover (12), and the side wall of the L-shaped plate (401) is fixedly connected to two symmetrically arranged sleeves (403), a sleeve rod (402) is inserted into the sleeve (403), the other end of the sleeve rod (402) is fixed to the side wall of the push plate (16), and the side wall of each sleeve (403) is sleeved with a third spring (404). 6. A double-plate sealing gate valve for avoiding clogging according to claim 2, characterized in that: the pushing mechanism includes a connecting frame (501) fixedly connected to the side wall of the pushing plate (16), and the side wall of the connecting frame (501) is fixedly connected to a pushing block (502), the top of the pushing block (502) is provided with an inclined surface (503), the side wall of the second connecting block (303) is fixedly connected to an L-shaped frame (504), and the side wall of the L-shaped frame (504) is fixedly connected to a pushing pin (505). 7. A double-plate sealing gate valve for avoiding clogging according to claim 1, characterized in that: the adsorption mechanism comprises two symmetrically arranged mounting grooves (701) opened on the side wall of the push plate (16), and a magnetic block (702) is fixedly inserted in the mounting groove (701). 8. A double-plate sealing gate valve for avoiding clogging according to claim 1, characterized in that: the blowing mechanism includes a cavity (801) opened in the push plate (16), and the side wall of the push plate (16) is provided with a plurality of blowing holes (802) arranged in an array, the blowing holes (802) are connected to the cavity (801), and a driving mechanism for driving the blowing holes (802) to blow is provided on the top of the sliding plate (13). 9. A double-plate sealing gate valve for avoiding clogging according to claim 8, characterized in that: the driving mechanism comprises an air storage box (901) fixedly connected to the top of the sliding plate (13), and a piston (902) is slidably connected in the air storage box (901), a connecting rod (906) is fixedly connected to the top of the piston (902), and the upper end of the connecting rod (906) is fixed to the bottom of the movable plate (14), an air inlet pipe (903) and an air outlet pipe (904) are fixedly connected to the side wall of the air storage box (901), the other end of the air outlet pipe (904) is fixedly connected to a hose (905), and the other end of the hose (905) is fixedly inserted in the side wall of the push plate (16) and communicated with the cavity (801), a first one-way valve is arranged in the air inlet pipe (903), and a second one-way valve is arranged in the air outlet pipe (904). 10. A double-plate sealing gate valve for avoiding clogging according to claim 1, characterized in that: the collecting mechanism comprises a connecting plate (1001) fixedly connected to the side wall of the fixed cover (12), and the side wall of the connecting plate (1001) is fixedly connected with a collecting box (1002).