CN116181923A

CN116181923A - Gate valve

Info

Publication number: CN116181923A
Application number: CN202211729615.9A
Authority: CN
Inventors: 林松道; 斯泽辉; 鲍旭涛; 任武
Original assignee: Ningbo Valve Manufacturing Co ltd
Current assignee: Ningbo Valve Manufacturing Co ltd
Priority date: 2022-12-31
Filing date: 2022-12-31
Publication date: 2023-05-30
Anticipated expiration: 2042-12-31
Also published as: CN116181923B

Abstract

The invention relates to the technical field of gate valves and discloses a gate valve, wherein a bottom sealing strip is movably embedded in the bottom door frame, a top sealing strip is movably embedded in the top door frame, the inner wall of a side door frame is movably embedded with a guide rail, the inner wall of the side door frame positioned on the side surface of one end of the guide rail is movably embedded with the side sealing strip, the middle part of one side of the guide rail is movably clamped with one end of a gate plate, and the side surface of the gate plate is contacted with the side sealing strip. According to the invention, the shapes of the door frame, the sealing strips and the guide rails in the original gate valve are changed, the top sealing strip and the side sealing strips are arranged in a butterfly shape in section, so that the two sealing strips have a double-channel sealing effect and a self-tightening force sealing effect, and the bottom sealing strip is arranged in a strip shape, so that the bottom of the bottom sealing strip is flush with the bottom of a channel after the bottom sealing strip is installed, the sealing surface is effectively prevented from being damaged due to sediment deposited at the top end of the bottom sealing strip when a medium flows through, and in conclusion, the gate valve can realize forward and reverse compression, and the integral sealing performance of the gate valve is effectively improved.

Description

Gate valve

Technical Field

The invention relates to the technical field of gate valves, in particular to a gate valve.

Background

The gate valve is a common cut-off valve, and mainly comprises a door frame, a sealing belt, a guide rail, a gate plate, an opening and closing mechanism and other parts, wherein the door frame is penetrated and arranged on a flow channel of a body and is reversely vertical to the flow channel, and when the gate valve is used, the valve plate slides along the guide rail under the action of the opening and closing mechanism, so that the flow channel is cut off or conducted, namely, the gate valve is mainly used for connecting or cutting off a medium of the flow channel, and is not applied to regulating the flow rate of the medium. Because the gate valve has the characteristics of good sealing performance, corrosion resistance and the like, the gate valve is widely used for municipal water supply and drainage, sewage treatment plants and the like, is used for stopping, adjusting flow and controlling water level, and is mostly suitable for clean water, sewage and seawater with the temperature of 80 ℃ or lower as fluid medium.

However, the existing gate valve has some defects in the use process: firstly, most gate valves are unidirectional seals at present and generally consist of wedge blocks and P-type rubber structures, and due to structural defects of the P-type rubber, reverse water inflow is caused, and when the water pressure is high and the water level is high, the rubber structures cannot form effective seals on the gate, so that the gate valve has certain leakage; secondly, when the flashboard is opened and lifted, vortex is generated on one side of the flashboard under the instantaneous water flow inrush effect, and the impact of water flow is very easy to cause the vibration of the flashboard and other parts, so that the friction between the guide rail and the flashboard, the friction between the sealing strip and the flashboard are increased, the sealing effect is reduced, and even the service life of the parts is reduced; in addition, because the medium that the flashboard valve passed through has impurity more, lead to its impurity to pile up in door frame annex gradually when the flashboard is in the sealed state that moves down, pile up for a long time and cause the corruption to guide rail and sealing strip, aggravate reduction, the reduction of life of sealed effect.

Disclosure of Invention

Aiming at the defects of the prior gate valve in the use process, the invention provides a gate valve which has the advantages of providing a plurality of sealing shapes such as side sealing strips and the like, reducing the impact of vortex on parts, effectively cleaning impurities in the gate valve, effectively improving the sealing performance of the gate valve and prolonging the service life of a device, and solving the technical problems in the prior art.

The invention provides the following technical scheme: the utility model provides a gate valve, includes the body, the passageway has been seted up at the middle part of body, and the inner wall and the valve frame fixed connection of passageway, the valve frame comprises end door frame, top door frame, side door frame, the top both sides of end door frame and the one end fixed connection of side door frame, the bottom both sides of top door frame and the other end fixed connection of side door frame, the inside activity scarf joint of end door frame has a bottom sealing strip, the inside activity scarf joint of top door frame has a top sealing strip, the inner wall and the guide rail activity scarf joint of side door frame inner wall and the side sealing strip that are located guide rail one end side, one side middle part and the one end activity joint of flashboard of guide rail, and the side sealing strip contact of flashboard, the top fixedly connected with of flashboard opens and close the mechanism, it comprises pneumatic motor and valve rod to open and close the mechanism, the top fixed sleeve joint of pneumatic motor outer wall and the top of body, the bottom and the one end swing joint of valve rod, the other end of valve rod passes top sealing strip and flashboard fixed connection.

Preferably, the baffle is placed to the both sides of flashboard, the baffle comprises main baffle, vice baffle, side shield, the both ends of main baffle and the one end fixed connection of vice baffle, the other end of vice baffle and the one end swing joint of side shield, one side of side shield is the outer wall contact with the side door frame all the time, the fixed orifices has been seted up to the inside both sides of flashboard, and the fixed film has been cup jointed to the inner wall of fixed orifices, the fixed column has been cup jointed in the both ends activity of fixed film, and through movable film fixed connection between two fixed columns, fixedly connected with extension spring between the inner wall of movable film stretches out fixed column one end and the vice baffle fixed connection of flashboard.

Preferably, one side of movable membrane and the one end intercommunication of water pipe, the other end and the storage tube intercommunication of water pipe are located set up the removal chamber in the flashboard of storage tube below, and the inner wall activity in removal chamber has cup jointed the movable plate, fixedly connected with movable membrane between the top of movable plate and the removal chamber top, through extension spring coupling between the inside top of storage tube and the movable plate top, be located the screw hole has been seted up to the flashboard of removal chamber below, the bottom swing joint of movable plate has the movable part, and the movable part passes the screw hole, the outer wall upper end of movable part has fixedly cup jointed the go-between, and go-between cup joints with the screw hole screw thread, the outer wall lower extreme swing joint of movable part has lower loose piece.

Preferably, the middle part of both sides fixedly connected with vortex pole of flashboard, with the fixed orifices has been seted up to the main baffle that the vortex pole position corresponds, and the fixed orifices cup joints with the outer wall activity of vortex pole, the fixed slot has been seted up to the both sides of vortex pole, and the fixed slot is connected with the one end activity joint of vortex piece, pass through compression spring between one side of vortex piece and the fixed slot one side inner wall, the opposite side of vortex piece and the one end fixed connection of impeller, the other end of impeller contacts with the one side that is close to the flashboard of main baffle, the quantity of vortex pole is three, and the vertical range of vortex pole, is located the top the impeller lateral wall in the vortex pole is provided with two locating parts, is located the centre the impeller lateral wall in the vortex pole is provided with a locating part, is located the below the impeller lateral wall in the vortex pole is not provided with the locating part.

Preferably, the cross section of bottom door frame is the U type of both sides inward sloping, the cross section of top door frame is the two U types of symmetry, the cross section of side door frame is the irregular U type of one side indent, the bottom sealing strip is banded, the cross section of top sealing strip and side sealing strip is butterfly form, the guide rail suits with the inner wall shape of side door frame.

Preferably, the overall top view shape of the baffle is a W shape with a large bending radian.

Preferably, the two fixed columns connected through the movable film are a group, two groups of fixed columns are arranged on the flashboard with the same height, three groups of fixed columns are arranged on the flashboard with the same vertical height, the movable film is made of flexible rubber materials, the fixed film, the water pipe and the storage pipe are made of hard rubber materials, the movable film is made of flexible rubber materials, and the movable cavity and the storage pipe are filled with liquid.

Preferably, one movable plate is correspondingly provided with four movable pieces, the movable pieces are correspondingly arranged around the side door frame, the outer wall of the upper movable ring is in a thread shape, and the top end of the lower movable block is arc-shaped and the bottom end of the lower movable block is horizontal.

Preferably, the main baffle part corresponding to the position of the fixing groove is positioned in the fixing groove, the main baffle is in contact with the limiting piece, the pushing piece is L-shaped, the pushing piece positioned in the upper turbulence bar is longest in length, and the pushing piece positioned in the lower turbulence bar is shortest in length.

Preferably, the limiting piece comprises recess, impeller, compression spring, the recess has been seted up to impeller lateral wall, and the recess internal activity has cup jointed the impeller, be connected through compression spring between impeller and the recess, the cross-sectional shape of impeller is semicircle type and the combination of rectangle.

The invention has the following beneficial effects:

1. according to the invention, the shapes of the door frame, the sealing strips and the guide rails in the original gate valve are changed, so that the bottom sealing strip is embedded in the bottom door frame, the top sealing strip is embedded in the top door frame, the side sealing strip and the guide rails are embedded in the side door frame, the side sealing strip is not required to be fixed by bolts, the side sealing strip and the side sealing strip are convenient to replace, and are arranged in a butterfly shape in section, so that the two sealing effects and the self-tightening sealing effect are achieved, the bottom sealing strip is arranged in a strip shape, the bottom of the bottom sealing strip is flush with the bottom of a channel after the bottom sealing strip is installed, sediment deposited at the top end of the bottom sealing strip is effectively prevented from damaging the sealing surface when a medium flows through, the gate valve can realize forward and reverse compression, the integral sealing performance of the gate valve is effectively improved, and the medium is prevented from leaking when the gate valve is used for sealing the channel.

2. According to the invention, the baffle pieces are arranged on the front side and the rear side of the flashboard and are movably connected with the flashboard through the fixed columns, and the baffle pieces are composed of the main baffle plate, the auxiliary baffle plate and the side baffle plates, so that most of impact generated by water flow is blocked and buffered by the baffle pieces and the fixed columns when the flashboard is lifted and opened, the sealing effect is prevented from being influenced by excessive vibration to increase friction among the side sealing strips, the guide rails and the flashboard, the protection of each part is improved, and the service life of each part is prolonged.

3. According to the invention, the movable part and the parts thereof are movably arranged at two sides of the bottom end of the flashboard, the movable part is connected with the fixed column through the parts such as the storage pipe, the movable film and the water pipe, when the flashboard moves downwards to close the body channel, the movable part is in a retracted state to effectively drive the fixed column to move outwards under pressure, so that the baffle part is in an extended state, preparation is made for lifting the flashboard subsequently, the baffle part is ensured to have a rebound buffering effect, protection of the flashboard and other parts is realized, and meanwhile, when the movable part is pushed out or retracted under the action of the flashboard, the upper movable ring is matched with the action of the spiral hole to drive the movable part and the parts thereof to rotate, so that impurities positioned at the top end of the bottom sealing strip and positioned in the side door frame are effectively lifted, and water flow is further convenient to drive the impurities to move, and the cleaning of impurities in the flashboard valve is realized.

4. According to the invention, the turbulence bars are arranged on the two sides of the flashboard, the turbulence piece, the pushing piece and other parts are movably arranged at one end penetrating through the main baffle plate (& gt), when the baffle piece is impacted by water flow to move towards the flashboard, the turbulence piece is driven to move at different distances, so that the turbulence piece can block the water flow at different degrees, the possibility of vortex generation is effectively reduced, the protection of the opposite side sealing strips and other parts is further improved, the reduction of the sealing effect is slowed down, and the service life of the flashboard valve is prolonged.

Drawings

FIG. 1 is a schematic view of the external perspective structure of a body according to the present invention;

FIG. 2 is a schematic view of the internal three-dimensional structure of the body according to the present invention;

FIG. 3 is a schematic view of the overall perspective view of the cross section of the bottom door frame and top door frame of the present invention;

FIG. 4 is a schematic view of the cross-sectional overall perspective of the side door frame of the present invention;

FIG. 5 is a schematic view of the overall perspective structure of the shutter plate according to the present invention;

FIG. 6 is an enlarged schematic view of a portion of the structure of FIG. 5A in accordance with the present invention;

FIG. 7 is a schematic top view of the internal structure of the shutter of FIG. 1 in position in accordance with the present invention;

FIG. 8 is a schematic top view of the interior structure of FIG. 4 in the spoiler lever position in accordance with the present invention;

FIG. 9 is an enlarged schematic view of a portion of the structure of FIG. 8B in accordance with the present invention;

FIG. 10 is an enlarged schematic view of a portion of the structure of FIG. 8C in accordance with the present invention;

FIG. 11 is a schematic view of a portion of the structure of the present invention in the uppermost spoiler lever position of FIG. 4;

FIG. 12 is a schematic view of a portion of the present invention in the lowermost spoiler lever position of FIG. 4;

FIG. 13 is a schematic view showing the internal structure of a shutter plate according to the present invention;

fig. 14 is a partially enlarged schematic view of the structure of fig. 13 at D in accordance with the present invention.

In the figure: 1. a body; 11. a bottom door frame; 110. a bottom sealing strip; 12. a top door frame; 120. a top sealing strip; 13. a side door frame; 130. a side seal strip; 131. a guide rail; 2. a flashboard; 21. an opening and closing mechanism; 3. a blocking member; 31. a main baffle; 32. a secondary baffle; 33. side baffles; 4. fixing the column; 40. a fixing film; 41. a movable membrane; 42. a water pipe; 5. a storage tube; 51. a moving plate; 52. moving the membrane; 6. a movable member; 61. a movable ring is arranged; 62. a lower loose piece; 7. a spoiler bar; 71. a spoiler; 8. a pushing member; 81. pushing the block.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Embodiment one:

referring to fig. 1-5 and 7-8, a gate valve comprises a body 1, a channel is provided in the middle of the body 1, the inner wall of the channel is fixedly connected with a valve frame, the valve frame can be installed in a direct grouting mode, or the valve frame is buckled by a movable mounting block, the valve frame is fixed on the inner wall of the body 1 by fixing a movable mounting block through a stainless steel expansion bolt, when the movable mounting block is touched with a steel bar in the body 1 when the stainless steel expansion bolt is fixed, the gate valve can move up and down along left and right side frames 13 to avoid the steel bar, or the other through hole of the movable mounting block is used for avoiding the left and right steel bar, the bottom frame 11 can also avoid the steel bar according to the method, the valve frame consists of the bottom frame 11, the top frame 12 and the side frames 13, and the valve frame is formed by welding a stainless steel strip after flanging, and has good distortion resistance, light weight and convenient installation, the two sides of the top end of the bottom door frame 11 are fixedly connected with one end of the side door frame 13, the two sides of the bottom end of the top door frame 12 are fixedly connected with the other end of the side door frame 13, the cross section of the bottom door frame 11 is in a U shape with two sides inclined inwards, the cross section of the top door frame 12 is in a symmetrical double U shape, the cross section of the side door frame 13 is in an irregular U shape with one side concave inwards, the arrangement of the bottom door frame 11, the top door frame 12 and the side door frame 13 can provide better protection for the bottom sealing strip 110, the top sealing strip 120 and the side sealing strip 130, so that the sealing performance between the two is better, the bottom sealing strip 110 in a strip shape is movably embedded in the bottom door frame 11, the top end of the bottom sealing strip 110 is flush with the bottom of a channel after being installed, sediment is not deposited at the bottom sealing strip 110 to damage a sealing surface when a medium flows, the top sealing strip 120 is movably embedded in the inside of the top door frame 12, the inner wall of the side door frame 13 is movably embedded with the guide rail 131, that is, the guide rail 131 is adapted to the shape of the inner wall of the side door frame 13, the guide rail 131 can be embedded in the side door frame 13 more stably, the slide plate is not required to be fixed by bolts, the slide plate is convenient to replace, meanwhile, the guide rail 131 is made of nylon alloy with very light weight and very good performance, the slide plate 2 always moves up and down in the guide rail 131, the friction coefficient is small, the inner wall of the side door frame 13 positioned on one end side of the guide rail 131 is movably embedded with the side sealing strip 130, one side middle part of the guide rail 131 is movably clamped with one end of the slide plate 2, the side surface of the slide plate 2 is contacted with the side sealing strip 130, the sections of the top sealing strip 120 and the side sealing strip 130 are butterfly-shaped, the slide plate 2 is flattened by a stainless steel plate block after being folded, the slide plate is processed by a special process, the slide plate is reliable in flatness, the sealing performance is good, the top end of the slide plate 2 is fixedly connected with the opening and closing mechanism 21 by an air motor and a valve rod, the outer wall of the air motor is fixedly sleeved with the top end of the body 1, the bottom of the air motor is movably connected with one end of the valve rod, the other end of the valve rod passes through the top sealing strip 120 and the top sealing strip 2, and the top sealing strip 21 is fixedly connected with the top of the slide plate 2, and the air-tight valve is not convenient to be opened and closed by adopting a pneumatic mechanism with the pneumatic sealing mechanism.

Embodiment two:

referring to fig. 5, 7-9 and 13, further, the baffle 3 is disposed at two sides of the gate 2, the overall top view of the baffle 3 is in a W shape with larger bending radian, the baffle 3 can be impacted first when water flow impacts, the shape of the main baffle 31 and the auxiliary baffle 32 enables the impacted water flow to be dispersed to two sides of the baffle 3, effectively changes the water flow direction and prevents vortex flow, meanwhile, the hinged side baffle 33 is always contacted with the wall surface of the side door frame 13, effectively protects the components in the side door frame 13 from being impacted by water flow and vibration, the friction between two sides is large, the sealing effect is reduced, the baffle 3 is composed of the main baffle 31, the auxiliary baffle 32 and the side baffle 33, two ends of the main baffle 31 are fixedly connected with one end of the auxiliary baffle 32, the other end of the auxiliary baffle 32 is movably hinged with one end of the side baffle 33, one side of the side baffle 33 is always in contact with the outer wall of the side door frame 13, fixing holes are formed in two sides of the flashboard 2, fixing films 40 made of hard rubber materials are fixedly sleeved on the inner walls of the fixing holes, the fixing films are not deformed when being pressed, the tightness of liquid in the fixing films is effectively guaranteed, fixing columns 4 are movably sleeved at two ends of each fixing film 40, the two fixing columns 4 are fixedly connected through a movable film 41, the movable film 41 is made of flexible rubber materials, the fixing columns 4 can be expanded and deformed when being stressed, the fixing columns 4 are pushed to move outwards, a stretching spring is fixedly connected between the inner walls of the movable film 41, one ends of the fixing columns 4 extending out of the flashboard 2 are fixedly connected with the auxiliary baffle 32, two groups of fixing columns 4 are arranged on the flashboard 2 with the same height, three groups of fixing columns 4 are arranged on the flashboard 2 with the same vertical height, the arrangement of the plurality of groups of fixing columns 4 can promote the stability of the baffle 3 to be improved.

Referring to fig. 7-9 and 13-14, further, one side of the movable membrane 41 is connected to one end of the water pipe 42, the other end of the water pipe 42 is connected to the storage pipe 5, the water pipe 42 and the storage pipe 5 are made of hard rubber materials, the water pipe 42 and the storage pipe 5 are not deformed when being pressed, the sealing performance of liquid in the water pipe is effectively ensured, a movable cavity is formed in the flashboard 2 below the storage pipe 5, the movable plate 51 is movably sleeved on the inner wall of the movable cavity, a movable membrane 52 made of flexible rubber material is fixedly connected between the top end of the movable plate 51 and the top end of the movable cavity, the water in the movable cavity is effectively ensured not to flow out, the inner top end of the storage pipe 5 is connected with the top end of the movable plate 51 through an extension spring, thereby the movable cavity and the storage pipe 5 are filled with liquid, the liquid in the storage pipe 5 can be extruded into the movable membrane 41 when the movable plate 51 moves, the movable film 41 is pushed to deform and the fixed column 4 is extended outwards, so that the baffle 3 moves and is in an outward moving state, preparation is made for retraction and buffering of the baffle 3 when the following flashboard 2 lifts upwards, a threaded hole is formed in the flashboard 2 below the movable cavity, the bottom end of the movable plate 51 is movably connected with the movable piece 6, the movable piece 6 penetrates through the threaded hole, specifically, one movable plate 51 is correspondingly provided with four movable pieces 6, the movable pieces 6 are correspondingly arranged around the side door frame 13, impurities which are not cleaned well around the side door frame 13 can be cleaned, cleanliness among side sealing strips 130 and other components is guaranteed, the influence on sealing performance and service life caused by the fact that friction degree between the flashboard 2 and the side sealing strips 130 and between the guide rails 131 is increased due to the impurities is prevented, an upper movable ring 61 is fixedly sleeved at the upper end of the outer wall of the movable piece 6, the outer wall of the upper movable ring 61 is in a threaded shape, the upper movable ring 61 is in threaded sleeve joint with the threaded hole, can cooperate with the screw hole, drive the moving part 6 rotatory when moving the moving part 6, the outer wall lower extreme activity of moving part 6 articulates there is lower loose piece 62, and the top of lower loose piece 62 is arc, the bottom is the level for according to Bernoulli's principle for lower loose piece 62 produces the removal effect to the medium, makes the impurity that stands produce to shift up, so that better by flowing medium takes away.

Embodiment III:

referring to fig. 5-8 and fig. 10-12, further, the middle part of the two sides of the flashboard 2 is fixedly connected with the spoiler 7, the main baffle 31 corresponding to the position of the spoiler 7 is provided with a fixing hole, the fixing hole is movably sleeved with the outer wall of the spoiler 7, the two sides of the spoiler 7 are provided with fixing grooves, the fixing grooves are movably clamped with one end of the main baffle 31 corresponding to the fixing grooves, the main baffle 31 is partially positioned in the fixing grooves, and the main baffle 31 is contacted with a limiting piece, so that the main baffle 31 and the limiting piece relatively move when moving, further, before the limiting piece does not move into a groove, the pusher 8 and the spoiler 71 can be driven to move slightly, further, the spoiler 71 is enabled to stir water flow, one side of the spoiler 71 is connected with one side inner wall of the fixing groove through a compression spring, the other side of the spoiler 71 is fixedly connected with one end of the pusher 8, the other end of the pusher 8 is contacted with one side of the flashboard 31, which is close to the spoiler 2, the pusher 8 is L-shaped, the length of the pusher 8 positioned in the upper spoiler 7 is longest, the length of the pusher 8 is positioned in the upper spoiler 7, the side wall of the spoiler 7 is positioned in the middle of the spoiler 7, the spoiler 7 is not provided with the side wall 7, and the two side walls of the spoiler 7 are arranged in the middle of the spoiler 7 can be arranged, and the side walls of the spoiler 7 are not in the middle of the spoiler 7 can be effectively arranged, and the side wall 7 can be arranged, and the side wall 7 is not is positioned in the middle of the side wall 7 is positioned at the middle of the side of the spoiler 7 can be arranged.

Referring to fig. 10-12, further, the limiting member is composed of a groove, a pushing block 81 and a compression spring, the side wall of the pushing member 8 is provided with the groove, the pushing block 81 with a semicircular and rectangular cross section is movably sleeved in the groove, the pushing block 81 is connected with the groove through the compression spring, the semicircular pushing block 81 can firstly drive the pushing member 8 and other components to move when being pushed by the main baffle 31, and then the pushing block 81 is retracted to drive the pushing member 8 and other components to move back, so that the moving frequency of the turbulence member 71 is effectively improved, and an effect is provided for blocking the formation of vortex.

The working principle of the using method of the invention is as follows:

the bottom door frame 11 and the side door frame 13 of the top door frame 12 of the valve door frame are fixedly arranged on the inner wall of the body 1, then the bottom sealing strip 110 is stably embedded in the bottom door frame 11, the top sealing strip 120 is stably embedded in the top door frame 12, the side sealing strip 130 and the guide rail 131 are stably embedded in the side door frame 13, and finally the flashboard 2 is arranged, so that the flashboard 2 can move up and down along the guide rail 131, and the flashboard valve has the characteristics of light weight, convenient installation, good sealing effect and good corrosion resistance;

when the flashboard 2 is positioned at the lower end of the side door frame 13 and needs to be lifted and opened, the opening and closing mechanism 21 is started, so that the flashboard 2 moves upwards along the guide rail 131 under the drive of the valve rod, in the process, the fluid medium firstly impacts the baffle 3 when flowing through the flashboard valve, so that the baffle 3 moves towards the flashboard 2 under the impact action, and meanwhile, the side baffle 33 is always contacted with the outer wall of the side door frame 13, so that the baffle 3 integrally forms a barrier to the fluid medium, the flashboard 2, the side sealing strip 130 and the guide rail 131 are positioned in a relatively stable environment, the parts cannot generate larger vibration to influence the contact between the flashboard 2 and the side sealing strip 130 and the guide rail 131, the abrasion of the parts is effectively reduced, the service life is prolonged, meanwhile, the shape of the baffle 3 is arranged to ensure that the fluid medium is dispersed to two sides, the track of the fluid movement is effectively blocked, the possibility of vortex is reduced, in addition, when the baffle 3 moves, the main baffle 31 moves along the fixed groove, and in the baffle 7 with the limiting piece, the main baffle 31 firstly pushes the baffle 71 to slightly move by the baffle 71 under the influence of the limiting piece when the movement, the baffle 31 is pushed by the baffle 71, the main baffle 71 moves slightly, and the two parts are prevented from moving along the same distance, and the vortex flow direction is further, the opposite directions are prevented from being excessively, and the movement of the vortex is prevented from moving the parts and the baffle 71 and the parts are effectively and excessively and being blocked by the moving opposite side and moving parts;

when the flashboard 2 is positioned at the upper end of the side door frame 13 and needs to be moved downwards for sealing, along with the continuous downward movement of the flashboard 2, the bottom end of the movable piece 6 is in contact with the bottom sealing strip 110, and under the action of the downward pressure of the flashboard 2, the movable piece 6 continuously retracts into the movable cavity until the movable piece 6 completely enters the flashboard 2, so that the movable plate 51 continuously moves upwards, the movable cavity and the liquid in the storage tube 5 are effectively pushed to move upwards by the water pipe 42 to the movable film 41, the movable film 41 is expanded to two sides, the fixed column 4 is effectively driven to drive the baffle 3 to move outwards, and the baffle 3 at two sides of the flashboard 2 is in an outwards moving state under the pushing of the movable piece 6 until the baffle 3 is buffered to protect the flashboard 2 and parts thereof when the following flashboard 2 is lifted upwards, and the service life of the parts is further prolonged;

when the movable piece 6 moves up and down, the upper movable ring 61 is matched with the threaded hole, so that the movable piece 6 generates a rotating effect, and further the movable piece 6 is driven to rotate, so that impurities standing above the bottom sealing strip 110 are effectively lifted up to prepare for cleaning impurities nearby the side door frame 13, when the movable piece 6 moves up to a moving cavity, the lifted impurities can enter the moving cavity below the moving plate 51 along with fluid, cleanliness between the bottom end of the flashboard 2 and the bottom sealing strip 110 is effectively ensured, tightness is prevented from being influenced by the impurities, when the movable piece 6 moves down to the outside, the lifted impurities can move along with an opened fluid medium and are far away from the periphery of the side door frame 13, and further the tightness is ensured not to be influenced by friction increase due to the impurities between parts in the side door frame 13.

Claims

1. The utility model provides a gate valve, includes body (1), the passageway has been seted up at the middle part of body (1), and the inner wall and the valve frame fixed connection of passageway, its characterized in that: the valve frame comprises bottom door frame (11), top door frame (12), side door frame (13), the top both sides of bottom door frame (11) and the one end fixed connection of side door frame (13), the bottom both sides of top door frame (12) and the other end fixed connection of side door frame (13), the inside activity of bottom door frame (11) is inlayed and is had end sealing strip (110), the inside activity of top door frame (12) is inlayed and is had top sealing strip (120), the inner wall and the guide rail (131) activity scarf joint of side door frame (13), be located the one end inner wall and the one end sealing strip (130) activity scarf joint of side door frame (13) of guide rail (131), the one side middle part and the one end activity joint of flashboard (2), and the side and the contact of side sealing strip (130) of flashboard (2), the top fixedly connected with opening and closing mechanism (21) comprises pneumatic motor and valve rod, the top end of pneumatic motor and body (1) is fixed, the bottom of pneumatic motor and the other end of valve rod (2) is crossed with the one end of side sealing strip (130).

2. A gate valve according to claim 1, characterized in that: baffle (3) have been placed to both sides of flashboard (2), baffle (3) are by main baffle (31), vice baffle (32), side shield (33) constitute, the both ends of main baffle (31) and the one end fixed connection of vice baffle (32), the other end of vice baffle (32) and the one end activity hinge of side shield (33), one side of side shield (33) is all the time with the outer wall contact of side door frame (13), fixed orifices has been seted up to the inside both sides of flashboard (2), and fixed film (40) have been cup jointed to the inner wall of fixed orifices, fixed column (4) have been cup jointed in the both ends activity of fixed film (40), and pass through movable membrane (41) fixed connection between two fixed columns (4), fixedly connected with extension spring between the inner wall of movable membrane (41), stretch out fixed column (4) one end and the vice baffle (32) fixed connection of flashboard (2).

3. A gate valve according to claim 2, characterized in that: one side of movable membrane (41) communicates with one end of water pipe (42), the other end and the storage tube (5) of water pipe (42) communicate, are located set up in flashboard (2) of storage tube (5) below and remove chamber, and the inner wall activity in removal chamber has cup jointed movable plate (51), fixedly connected with removes membrane (52) between the top of movable plate (51) and the removal chamber top, pass through extension spring between the inside top of storage tube (5) and movable plate (51) top and be connected, be located flashboard (2) of removal chamber below is seted up the screw hole, the bottom swing joint of movable plate (51) has moving part (6), and moving part (6) pass the screw hole, last living ring (61) have been fixedly cup jointed to the outer wall upper end of moving part (6), and last living ring (61) and screw hole screw thread cup joint, the outer wall lower extreme activity of moving part (6) articulates movable piece (62).

4. A gate valve according to claim 3, characterized in that: the utility model discloses a flashboard, flashboard (2) are provided with baffle (7), baffle (7) and baffle (7) are provided with baffle (7), baffle (7) are provided with baffle (7) and baffle (7) are provided with baffle (8) and baffle (8) are provided with baffle (8) and baffle (7) are provided with baffle (7), baffle (7) are provided with baffle (7) and baffle (7) are provided with baffle (8) and baffle (baffle) and baffle (7) are provided with baffle (baffle), baffle (7) are provided with baffle (8) and baffle (baffle) and baffle).

5. A gate valve according to claim 1, characterized in that: the cross section of bottom door frame (11) is the U type of both sides inward sloping, the cross section of top door frame (12) is the two U types of symmetry, the cross section of side door frame (13) is the irregular U type of one side indent, bottom sealing strip (110) are banded, the cross section of top sealing strip (120) and side sealing strip (130) is butterfly form, guide rail (131) and the inner wall shape of side door frame (13) are suited.

6. A gate valve according to claim 2, characterized in that: the overall overlooking shape of the baffle (3) is a W shape with larger bending radian.

7. A gate valve according to claim 3, characterized in that: two fixed columns (4) connected through movable membrane (41) are a set of, are provided with two sets of fixed columns (4) on flashboard (2) of same height, are provided with three sets of fixed columns (4) on the flashboard (2) of same vertical, movable membrane (41) are flexible rubber material, fixed membrane (40), water pipe (42) and store up pipe (5) are hard rubber material, movable membrane (52) are flexible rubber material, remove and be filled with liquid in chamber and the store up pipe (5).

8. A gate valve according to claim 3, characterized in that: four movable pieces (6) are correspondingly arranged on the movable plate (51), the movable pieces (6) are correspondingly arranged around the side door frame (13), the outer wall of the upper movable ring (61) is in a threaded shape, and the top end of the lower movable block (62) is arc-shaped and the bottom end of the lower movable block is horizontal.

9. A gate valve according to claim 4, wherein: the main baffle (31) part corresponding to the position of the fixed groove is positioned in the fixed groove, the main baffle (31) is in contact with the limiting piece, the pushing piece (8) is L-shaped, the pushing piece (8) positioned in the upper turbulence bar (7) is longest in length, and the pushing piece (8) positioned in the lower turbulence bar (7) is shortest in length.

10. A gate valve according to claim 9, wherein: the limiting piece comprises a groove, a pushing block (81) and a compression spring, the side wall of the pushing piece (8) is provided with the groove, the pushing block (81) is movably sleeved in the groove, the pushing block (81) is connected with the groove through the compression spring, and the section shape of the pushing block (81) is a semicircular and rectangular combination.