A high-pressure sealing plug valve

Abstract

The application discloses a clamping sleeve type high-pressure sealing plug valve and relates to the field of plug valves.The clamping sleeve type high-pressure sealing plug valve comprises a valve body and a rotating plug which is sleeved in the valve body, and the upper end of the rotating plug is provided with a main shaft; the inner wall of the valve body is provided with a filter plate; and the front and back sides of the rotating plug are provided with through holes; and the surface of the main shaft is sleeved with a limiting tooth plate.The clamping sleeve type high-pressure sealing plug valve is connected between the left and right ends of the valve body and a pipeline through bolts, so that liquid leakage in the valve body can be avoided; when the main shaft rotates, the rotating plug can be driven to rotate, so that the through holes on the two sides of the rotating plug can be correspondingly communicated with the valve body, the opening and closing of the plug valve can be conveniently adjusted, the filter plate arranged in the valve body can filter fluid passing through the plug valve, the rotating plug in the plug valve can be prevented from being blocked and damaged due to impurities in the fluid, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plug valves, in particular to a high-pressure sealing plug valve with a clamping sleeve. BACKGROUND

[0002] A plug valve is a valve that controls fluid flow by rotating an internal plug. Valves are mechanical devices used to control the flow of fluids, such as liquids, gases, slurries, etc. by opening, closing, or regulating the flow passage cross-section to control flow rate, pressure, and flow direction. They are widely used in the fields of petroleum, chemical industry, power, water conservancy, municipal administration, metallurgy, etc.

[0003] In the prior art, when adjusting the plug valve, the long handle position of the plug valve is prone to deviation, which may cause inconvenience in adjusting the internal opening angle of the plug valve and poor limiting effect.

[0004] To overcome the above shortcomings, the prior art (publication number CN220816698U) discloses a plug valve, the inside of the plug valve body is provided with a valve stem, one side surface of the valve stem is fixedly connected with a handle, the upper surface of the handle is fixedly connected with symmetrically distributed elastic pressing strips, and the upper surface of the handle is hingedly connected with an extension handle. The plug valve has a limiting device arranged on the outer surface of the plug valve body, and the limiting device includes an annular gear ring, the inner wall of the annular gear ring is fixedly sleeved with the outer surface of the plug valve body. This structure can fold and store the handle part, avoid accidental touch, and accurately open the plug valve body to a certain angle and limit the opening angle.

[0005] To overcome the above shortcomings, the prior art (publication number CN218818289U) discloses a top drive plug valve, the two sides of the plug valve body are respectively provided with communication pipes, one side of the plug valve body is provided with a detachable maintenance cover, the bottom of the plug valve body is provided with a bottom disc assembly, the bottom disc assembly includes a mounting bottom disc, the mounting bottom disc is connected with the bottom of the plug valve body through a plurality of fixing bolts, the inside of the plug valve body is provided with a plug valve stem and a plug valve core, the plug valve core is provided with a through hole, one end of the bottom of the plug valve stem penetrates into the through hole of the plug valve core, and the bottom of the plug valve stem is provided with two accommodating grooves, the inside of the two accommodating grooves is provided with a buckle assembly for fixing the plug valve core; the buckle assembly can realize convenient disassembly and installation of the plug valve core and the plug valve stem, so that when the plug valve core is replaced regularly, the operation time can be reduced, and the operator can use it conveniently.

[0006] Although the prior art can overcome the above-mentioned deficiencies, other problems still exist during its operation, such as: after the opening and closing of the rotating regulating plug valve, if the water flow impact force inside the plug valve is too large, the rotating plug inside the plug valve is easily washed away, the rotating plug is easily washed away, the rotating angle is easily changed, the inside of the plug valve is easily closed after the angle is changed, the plug valve is easily closed automatically, and the use of the plug valve is easily affected. SUMMARY

[0007] The purpose of the present application is to provide a high-pressure sealing plug valve with a sleeve to solve the problem of the above background art, that is, after the opening and closing of the rotating regulating plug valve, if the water flow impact force inside the plug valve is too large, the rotating plug inside the plug valve is easily washed away, the rotating plug is easily washed away, the rotating angle is easily changed, the inside of the plug valve is easily closed after the angle is changed, the plug valve is easily closed automatically, and the use of the plug valve is easily affected.

[0008] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a high-pressure sealing plug valve with a sleeve, comprising a valve body and a rotating plug inside the valve body, and the upper end of the rotating plug is provided with a main shaft, the inner wall of the valve body is provided with a filter plate, and the front and rear sides of the rotating plug are provided with through holes; the surface of the main shaft is provided with a limiting tooth plate, the surface of the limiting tooth plate is provided with a horizontal plate, the outer side of the horizontal plate is provided with a plug valve positioning mechanism for auxiliary positioning; the inner wall of the valve body is provided with a friction wheel rod, the outer side of the friction wheel rod is provided with a driving disc, the outer side of the driving disc is provided with an auxiliary dredging mechanism capable of following the valve opening and closing drive; the inner wall of the valve body is provided with an inflation bin, the inside of the inflation bin is provided with a piston sealing plate, and the inside of the piston sealing plate is provided with a high-efficiency dredging mechanism for improving the dredging effect.

[0009] Further, the upper end of the valve body is provided with a sleeve plate through bolts, the inside of the sleeve plate is provided with the outside of the main shaft, the upper end of the main shaft is provided with a mounting seat, and the upper end of the mounting seat is provided with an adjusting handle through bolts.

[0010] Further, the plug valve positioning mechanism is provided with a positioning tooth, the lower end of the positioning tooth is fixedly installed on the upper end of the sleeve plate, and the upper end of the positioning tooth is engaged with the lower end of the limiting tooth plate.

[0011] Further, the inside of the horizontal plate is in sliding connection with the main shaft, the inside upper end of the horizontal plate is provided with a return spring, the upper end of the return spring is fixedly installed in the inside of the main shaft, the inside of the sleeve plate is fixedly installed with a sealing strip, and the inner wall of the sealing strip is in contact with the surface of the main shaft.

[0012] Further, the auxiliary dredging mechanism is provided with a fixed plate, the upper end of the fixed plate is fixedly installed on the inner wall of the valve body, a guide rod is installed on the inner side of the fixed plate, an impact block is installed on the surface of the guide rod, the outer side of the impact block is provided through the fixed plate, the impact block corresponds to the upper end of the filter plate, a vibration spring is sleeved on the surface of the guide rod, and the inner and outer sides of the vibration spring are arranged between the impact block and the fixed plate.

[0013] Further, the upper end of the friction wheel rod is rotatably installed on the inner wall of the valve body, the inner side of the friction wheel rod is attached to the surface of the rotating plug, a transmission belt is sleeved on the middle end of the friction wheel rod through a belt pulley, the outer side of the transmission belt is sleeved on the middle end of the driving disc through a belt pulley, and the upper end of the driving disc is rotatably installed on the inner wall of the valve body.

[0014] Further, a stand is fixedly installed on the lower end edge of the driving disc, a guide groove rod is sleeved on the surface of the stand, the inner side of the guide groove rod is in a groove shape, a limiting plate is installed on the outer side of the guide groove rod, the upper end of the limiting plate is fixedly installed on the inner wall of the valve body, and the outer side of the guide groove rod corresponds to the inner side of the impact block.

[0015] Further, the efficient dredging mechanism is provided with a movable toothed plate, the middle end of the movable toothed plate penetrates through the upper end of the filter plate, the movable toothed plate is in an L shape, the inner side upper end of the movable toothed plate is fixedly installed on the lower end of the guide groove rod, a gear shaft is engagedly installed on the lower end of the movable toothed plate, reciprocating lead screws are fixedly installed on the front and rear ends of the gear shaft, the front and rear ends of the reciprocating lead screws are rotatably installed on the inner wall of the valve body, a movable cavity rod is screwedly installed on the surface of the reciprocating lead screw, sliding rods are installed on the ends of the movable cavity rod, and the front and rear ends of the sliding rods are fixedly installed on the inner wall of the valve body.

[0016] Further, the outer side of the piston sealing plate is attached to the inner wall of the inflation chamber, an inclined block is fixedly installed on the inner side of the piston sealing plate, the inner side of the inclined block penetrates through the inflation chamber, the inner side of the inclined block is correspondingly provided with a pushing block, the pushing blocks are uniformly installed on the surface of the transmission belt, and an adjusting spring is arranged between the piston sealing plate and the inner wall of the inflation chamber.

[0017] Further, a conveying hose is connected to the lower end of the inflation chamber, the outer side of the conveying hose is connected to the movable cavity rod, an air outlet is installed on the outer side of the movable cavity rod, the air outlet corresponds to the surface hole of the filter plate, an air inlet is installed on the upper end of the inflation chamber, the upper end of the air inlet penetrates through the valve body, and a one-way valve is arranged in the air inlet.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] 1. In the use of the sleeve type high pressure sealing plug valve, the valve body left and right ends are connected with the pipeline through bolts, after installation, if it is necessary to adjust the opening and closing of the plug valve, the sleeve plate and the main shaft are provided with high pressure sealing strips, which can avoid the leakage of the liquid in the valve body, when the main shaft rotates, it can drive the rotating plug to rotate, so that the through holes on both sides of the rotating plug can be communicated with the valve body, the opening and closing of the plug valve can be conveniently adjusted, under the setting of the filter plate in the valve body, the fluid passing through the plug valve can be filtered, avoiding the existence of impurities in the fluid causing the rotating plug in the plug valve to be blocked and damaged, improving the service life;

[0020] Further, when the main shaft rotates, the limit tooth plate sleeved on the surface of the main shaft can move upwards along the inclined edge of the positioning tooth due to the bottom tooth shape, the limit tooth plate moving upwards drives the horizontal plate to extrude the return spring, so that the angle of the main shaft can be adjusted, and vice versa, when the main shaft stops rotating, the limit tooth plate moves downwards and engages with the positioning tooth under the action of the horizontal plate and the return spring, the friction force generated by the engagement can avoid the change of the angle of the main shaft under the impact of the water flow, so as to realize the stability improvement of the plug valve and improve the use effect of the plug valve.

[0021] 2. When the plug valve is opened or closed by adjusting the handle, the rotating plug in the plug valve rotates, the rotating of the rotating plug drives the friction wheel rod in contact with it through friction force, the friction wheel rod is sleeved with the belt pulley and the transmission belt, drives the outer driving disc, the outer side of the guide groove rod moves reciprocatingly left and right under the limitation of the limiting plate along with the rotation of the driving disc, the guide groove rod moving reciprocatingly left and right can automatically realize dredging when the plug valve is opened and closed, without manual dredging, the automatic dredging is realized along with the use frequency of the plug valve, avoiding the tedious manual operation.

[0022] 3. When the filter plate is dredged, the transmission belt moves, the push block on the surface of the transmission belt extrudes the corresponding inclined block, the inclined block is pushed outward to push the piston sealing plate, the piston sealing plate moves to the inside of the inflation chamber and extrudes the adjusting spring, and extrudes the air in the inflation chamber, so that the air in the inflation chamber is conveyed to the movable cavity rod through the conveying hose, at this time, under the action of the one-way valve in the conveying hose, the air is conveyed to the inside of the movable cavity rod, the air blows through the air outlet to the surface through hole of the filter plate, and vice versa, when the adjusting spring resets, the piston sealing plate moves inward through the one-way valve in the air inlet to exhaust, and is used for re-inflation, so as to improve the dredging effect, further improve the efficiency of dredging, and ensure the stability of the plug valve. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a whole three-dimensional structure schematic diagram of the present application.

[0024] Figure 2 It is a bottom view three-dimensional structure schematic diagram of the present application.

[0025] Figure 3 It is the positive section view schematic diagram of the closed state of the application.

[0026] Figure 4 It is the positive section view schematic diagram of the open state of the application.

[0027] Figure 5 It is the positive section view schematic diagram of the limiting tooth plate of the application.

[0028] Figure 6 It is the schematic diagram of the friction wheel rod of the application.

[0029] Figure 7 It is the schematic diagram of the guide slot rod of the application.

[0030] Figure 8 It is the schematic diagram of the active tooth plate of the application.

[0031] Figure 9 It is the schematic diagram of the high-efficiency dredging mechanism of the application.

[0032] Figure 10 It is the schematic diagram of the active cavity rod of the application. Figure 9 It is the schematic diagram of the active cavity rod of the application.

[0033] Figure 11 It is the schematic diagram of the active cavity rod of the application.

[0034] In the figure: 1, valve body; 2, rotating plug; 3, main shaft; 4, cover plate; 5, mounting seat; 6, adjusting handle; 7, filter plate; 8, positioning tooth; 9, limiting tooth plate; 10, cross plate; 11, return spring; 12, friction wheel rod; 13, transmission belt; 14, driving disc; 15, stand; 16, guide slot rod; 17, limiting plate; 18, fixed plate; 19, guide rod; 20, impact block; 21, vibration spring; 22, active tooth plate; 23, gear shaft; 24, reciprocating screw rod; 25, sliding rod; 26, active cavity rod; 27, inflation chamber; 28, piston sealing plate; 29, inclined block; 30, shifting block; 31, adjusting spring; 32, delivery hose; 33, air outlet; 34, air inlet. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0036] Embodiment one: asFigures 1-5 The technical scheme shown, a card sleeve type high pressure sealing plug valve, in order to solve the problem of inconvenient adjustment of the rotating plug 2, discloses: the valve body 1 and the rotating plug 2 sleeved inside the valve body 1, and the upper end of the rotating plug 2 is provided with a main shaft 3, the inner wall of the valve body 1 is provided with a filter plate 7, and the front and back sides of the rotating plug 2 are provided with through holes; the surface of the main shaft 3 is sleeved with a limiting tooth plate 9, the surface of the limiting tooth plate 9 is provided with a horizontal plate 10, and the outer side of the horizontal plate 10 is provided with a plug valve positioning mechanism for auxiliary positioning, the upper end of the valve body 1 is provided with a sleeve plate 4 through bolts, the inside of the sleeve plate 4 is sleeved outside the main shaft 3, and the upper end of the main shaft 3 is provided with a mounting seat 5, and the upper end of the mounting seat 5 is provided with an adjusting handle 6 through bolts, the plug valve positioning mechanism is provided with a positioning tooth 8, the lower end of the positioning tooth 8 is fixedly installed on the upper end of the sleeve plate 4, and the upper end of the positioning tooth 8 is engaged with the lower end of the limiting tooth plate 9, the inner side of the horizontal plate 10 is in sliding connection with the main shaft 3, the inner side upper end of the horizontal plate 10 is provided with a return spring 11, and the upper end of the return spring 11 is fixedly installed inside the main shaft 3, the inner side of the sleeve plate 4 is fixedly installed with a sealing strip, and the inner wall of the sealing strip is in contact with the surface of the main shaft 3.

[0037] When using the card sleeve type high pressure sealing plug valve, the left and right ends of the valve body 1 are connected with the pipeline through bolts, after installation, if it is necessary to adjust the opening and closing of the plug valve, the adjusting handle 6 on the mounting seat 5 is turned, the adjusting handle 6 drives the main shaft 3 to rotate, the main shaft 3 can move inside the sleeve plate 4 when rotating, and the high pressure sealing strip is arranged between the sleeve plate 4 and the main shaft 3, so that the liquid inside the valve body 1 can be prevented from leaking, the main shaft 3 can drive the rotating plug 2 to rotate when rotating, so that the through holes on both sides of the rotating plug 2 can be in communication with the valve body 1, the opening and closing of the plug valve can be conveniently adjusted, the filter plate 7 inside the valve body 1 can filter the fluid passing through the plug valve, so that the rotating plug 2 inside the plug valve can be prevented from being blocked and damaged due to impurities in the fluid, and the service life is improved, and when the main shaft 3 rotates, the limiting tooth plate 9 sleeved on the surface of the main shaft 3 can move upwards along the inclined edge of the positioning tooth 8 due to the tooth shape at the bottom, the limiting tooth plate 9 moving upwards drives the horizontal plate 10 to press the return spring 11, so that the angle of the main shaft 3 can be adjusted, and conversely when the main shaft 3 stops rotating, the limiting tooth plate 9 moves downwards and engages with the positioning tooth 8 under the action of the horizontal plate 10 and the return spring 11, the friction force of engagement can prevent the angle of the main shaft 3 from changing under the impact of the water flow, so that the stability of the plug valve is improved, and the use effect of the plug valve is improved.

[0038] Example two: as Figures 1-7The technical scheme shown, on the basis of embodiment one, in order to solve the problem that the plug valve is easy to be blocked, discloses that the inner wall of the valve body 1 is provided with a friction wheel rod 12, the outer side of the friction wheel rod 12 is provided with a driving disc 14, and the outer side of the driving disc 14 is provided with an auxiliary dredging mechanism capable of following the valve opening and closing driving, the auxiliary dredging mechanism is provided with a fixed plate 18, the upper end of the fixed plate 18 is fixedly installed on the inner wall of the valve body 1, the inner side of the fixed plate 18 is provided with a guide rod 19, the surface of the guide rod 19 is provided with an impact block 20, the outer side of the impact block 20 penetrates through the fixed plate 18, the impact block 20 corresponds to the upper end of the filter plate 7, the surface of the guide rod 19 is provided with a vibration spring 21, the inner and outer sides of the vibration spring 21 are arranged between the impact block 20 and the fixed plate 18, the upper end of the friction wheel rod 12 is rotatably installed on the inner wall of the valve body 1, the inner side of the friction wheel rod 12 is attached to the surface of the rotating plug 2, the middle end of the friction wheel rod 12 is provided with a transmission belt 13 through a belt pulley, the outer side of the transmission belt 13 is provided on the middle end of the driving disc 14 through a belt pulley, the upper end of the driving disc 14 is rotatably installed on the inner wall of the valve body 1, the lower end edge of the driving disc 14 is fixedly provided with a vertical column 15, the surface of the vertical column 15 is provided with a guide groove rod 16, the inner side of the guide groove rod 16 is in a groove shape, and the outer side of the guide groove rod 16 is provided with a limiting plate 17, the upper end of the limiting plate 17 is fixedly installed on the inner wall of the valve body 1, and the outer side of the guide groove rod 16 corresponds to the inner side of the impact block 20.

[0039] When the plug valve is opened or closed by adjusting the handle 6, the rotating plug 2 in the plug valve rotates, the rotation of the rotating plug 2 drives the friction wheel rod 12 attached thereto by friction, the friction wheel rod 12 drives the driving disc 14 on the outer side under the sleeve of the belt pulley and the transmission belt 13, the driving disc 14 can drive the vertical column 15 at the bottom when rotating, the vertical column 15 drives the guide groove rod 16 sleeved on the surface to rotate, the outer side of the guide groove rod 16 moves back and forth left and right under the limitation of the limiting plate 17 along with the rotation of the driving disc 14, the guide groove rod 16 moving back and forth left and right extrudes the impact block 20 on the outer side, the impact block 20 is extruded to extrude the vibration spring 21 along the guide rod 19, at the same time, the impact block 20 penetrates through the fixed plate 18 to impact the filter plate 7, the filter plate 7 is impacted by the impact block 20, and under the action of the elastic force of the vibration spring 21, it vibrates back and forth, so as to improve the vibration efficiency, so as to automatically realize dredging when the plug valve is opened and closed, without manual dredging, automatic dredging along with the use frequency of the plug valve, avoiding the tedious manual operation.

[0040] Embodiment three: as Figures 1-11The technical scheme is shown, on the basis of embodiment two, in order to solve the problem of poor dredging effect, the inner wall of the valve body 1 is provided with an inflation chamber 27, and the inside of the inflation chamber 27 is provided with a piston sealing plate 28, and the inside of the piston sealing plate 28 is provided with a high-efficiency dredging mechanism for improving the dredging effect, the high-efficiency dredging mechanism is provided with a movable tooth plate 22, the middle end of the movable tooth plate 22 penetrates the upper end of the filter plate 7, the shape of the movable tooth plate 22 is "L" shape, the inside upper end of the movable tooth plate 22 is fixedly installed on the lower end of the guide groove rod 16, the lower end of the movable tooth plate 22 is engagedly installed with a gear shaft 23, the front and rear ends of the gear shaft 23 are fixedly installed with a reciprocating wire rod 24, the front and rear ends of the reciprocating wire rod 24 are rotatably installed on the inner wall of the valve body 1, the surface of the reciprocating wire rod 24 is screwedly installed with a movable cavity rod 26, the end of the movable cavity rod 26 penetrates and is installed with a sliding rod 25, the front and rear ends of the sliding rod 25 are fixedly installed on the inner wall of the valve body 1, the outside of the piston sealing plate 28 is attached to the inner wall of the inflation chamber 27, the inside of the piston sealing plate 28 is fixedly installed with an inclined block 29, the inside of the inclined block 29 penetrates the inflation chamber 27, the inside of the inclined block 29 is correspondingly provided with a push block 30, the push block 30 is uniformly installed on the surface of the transmission belt 13, the inside of the piston sealing plate 28 and the inner wall of the inflation chamber 27 are provided with an adjusting spring 31, the lower end of the inflation chamber 27 is connected with a conveying hose 32, the outside of the conveying hose 32 is connected with the movable cavity rod 26, the outside of the movable cavity rod 26 is installed with an air outlet 33, the air outlet 33 corresponds to the surface hole of the filter plate 7, the upper end of the inflation chamber 27 penetrates and is installed with an air inlet 34, the upper end of the air inlet 34 penetrates the valve body 1, and the inside of the air inlet 34 is provided with a one-way valve.

[0041] When the filter plate 7 is dredged, the driving belt 13 is moved, the pushing block 30 on the surface of the driving belt 13 extrudes the corresponding inclined block 29, the inclined block 29 is extruded to push the piston sealing plate 28 outward, the piston sealing plate 28 moves to the inside of the inflation chamber 27, extrudes the adjusting spring 31, and extrudes the air in the inflation chamber 27, so that the air in the inflation chamber 27 is conveyed to the movable cavity rod 26 along the conveying hose 32, at the same time, when the guide groove rod 16 moves outward, the guide groove rod 16 moves to drive the bottom movable tooth plate 22, the movable tooth plate 22 moves to drive the gear shaft 23 at the lower end, when the gear shaft 23 rotates, it can drive the reciprocating wire rod 24, when the reciprocating wire rod 24 rotates, it can drive the surface movable cavity rod 26, the movable cavity rod 26 can reciprocate under the limiting of the slide rod 25, the movable cavity rod 26 reciprocates along the inside of the filter plate 7, at this time, under the action of the one-way valve in the conveying hose 32, the air in the conveying hose 32 is conveyed to the inside of the movable cavity rod 26, the air blows through the air outlet 33 to align the through hole on the surface of the filter plate 7, dredges, conversely, when the adjusting spring 31 resets, the piston sealing plate 28 moves inward to draw air through the one-way valve in the air inlet 34, and is used again, which improves the dredging effect and further improves the dredging efficiency and ensures the stable connection of the plug valve.

[0042] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, the scope of the present application being defined by the appended claims and their equivalents.

Claims

1. A high-pressure sealing plug valve with a sleeve, comprising a valve body (1) and a rotating plug (2) sleeved in the valve body (1), wherein the upper end of the rotating plug (2) is provided with a main shaft (3), the inner wall of the valve body (1) is provided with a filter plate (7), and the front and rear sides of the rotating plug (2) are provided with through holes; characterized in that the surface of the main shaft (3) is sleeved with a limiting tooth plate (9), the surface of the limiting tooth plate (9) is provided with a horizontal plate (10), the outer side of the horizontal plate (10) is provided with a plug valve positioning mechanism for auxiliary positioning; the inner wall of the valve body (1) is provided with a friction wheel rod (12), the outer side of the friction wheel rod (12) is provided with a driving disc (14), and the outer side of the driving disc (14) is provided with an auxiliary dredging mechanism capable of following the valve opening and closing driving; the inner wall of the valve body (1) is provided with an inflation bin (27), the inside of the inflation bin (27) is provided with a piston sealing plate (28), and the inside of the piston sealing plate (28) is provided with a high-efficiency dredging mechanism for improving the dredging effect; the auxiliary dredging mechanism is provided with a fixed plate (18), the upper end of the fixed plate (18) is fixedly installed on the inner wall of the valve body (1), the inside of the fixed plate (18) is provided with a guide rod (19), the surface of the guide rod (19) is provided with an impact block (20), the outer side of the impact block (20) penetrates through the fixed plate (18), the impact block (20) corresponds to the upper end of the filter plate (7), the surface of the guide rod (19) is sleeved with a vibration spring (21), and the inside and outside of the vibration spring (21) are arranged between the impact block (20) and the fixed plate (18); the upper end of the friction wheel rod (12) is rotatably installed on the inner wall of the valve body (1), the inside of the friction wheel rod (12) is attached to the surface of the rotating plug (2), the middle end of the friction wheel rod (12) is sleeved with a transmission belt (13) through a belt pulley, the outer side of the transmission belt (13) is sleeved on the middle end of the driving disc (14) through a belt pulley, and the upper end of the driving disc (14) is rotatably installed on the inner wall of the valve body (1); the lower end edge of the driving disc (14) is fixedly provided with a stand (15), the surface of the stand (15) is sleeved with a guide groove rod (16), the inside of the guide groove rod (16) is in the shape of a groove, the outer side of the guide groove rod (16) penetrates through a limiting plate (17), the upper end of the limiting plate (17) is fixedly installed on the inner wall of the valve body (1), and the outer side of the guide groove rod (16) corresponds to the inside of the impact block (20). The high-efficiency dredging mechanism is provided with a movable toothed plate (22), the middle end of the movable toothed plate (22) penetrates the upper end of the filter plate (7), the movable toothed plate (22) is in the shape of an "L" character, the inner side upper end of the movable toothed plate (22) is fixedly installed on the lower end of the guide groove rod (16), the lower end of the movable toothed plate (22) is engagedly installed with a gear shaft (23), the front and rear ends of the gear shaft (23) are fixedly installed with reciprocating wire rods (24), the front and rear ends of the reciprocating wire rods (24) are rotatably installed on the inner wall of the valve body (1), the surface of the reciprocating wire rods (24) is screwedly installed with movable cavity rods (26), the ends of the movable cavity rods (26) are penetratively installed with slide rods (25), and the front and rear ends of the slide rods (25) are fixedly installed on the inner wall of the valve body (1). The outer side of the piston sealing plate (28) is attached to the inner wall of the inflation chamber (27), the inner side of the piston sealing plate (28) is fixedly installed with an inclined block (29), the inner side of the inclined block (29) penetrates the inflation chamber (27), the inner side of the inclined block (29) is correspondingly provided with a shifting block (30), the shifting blocks (30) are evenly installed on the surface of the transmission belt (13), and adjusting springs (31) are arranged between the piston sealing plate (28) and the inner wall of the inflation chamber (27). The lower end of the inflation chamber (27) is connected with a conveying hose (32), the outer side of the conveying hose (32) is connected with the movable cavity rod (26), the outer side of the movable cavity rod (26) is installed with an air outlet (33), the air outlet (33) corresponds to the surface hole of the filter plate (7), the upper end of the inflation chamber (27) is penetratively installed with an air inlet (34), the upper end of the air inlet (34) penetrates the valve body (1), and a one-way valve is arranged in the air inlet (34).

2. A high pressure packing box valve according to claim 1, characterized in that: The upper end of the valve body (1) is installed with a cover plate (4) through bolts, the inner side of the cover plate (4) is sleeved on the outer side of the main shaft (3), the upper end of the main shaft (3) is provided with a mounting seat (5), and the upper end of the mounting seat (5) is installed with an adjusting handle (6) through bolts.

3. A high pressure packing box valve as claimed in claim 1, wherein: The plug valve positioning mechanism is provided with positioning teeth (8), the lower end of the positioning teeth (8) is fixedly installed on the upper end of the cover plate (4), and the upper end of the positioning teeth (8) is engaged with the lower end of a limiting toothed plate (9).

4. A high pressure packing box valve according to claim 3, characterized in that: The inner side of the cross plate (10) is slidably connected with the main shaft (3), the inner side upper end of the cross plate (10) is installed with a return spring (11), the upper end of the return spring (11) is fixedly installed in the main shaft (3), the inner side of the cover plate (4) is fixedly installed with a sealing strip, and the inner wall of the sealing strip is attached to the surface of the main shaft (3).

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