CN112762184A - Automatic compensation formula industrial gate valve - Google Patents

Automatic compensation formula industrial gate valve Download PDF

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Publication number
CN112762184A
CN112762184A CN202110107439.4A CN202110107439A CN112762184A CN 112762184 A CN112762184 A CN 112762184A CN 202110107439 A CN202110107439 A CN 202110107439A CN 112762184 A CN112762184 A CN 112762184A
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CN
China
Prior art keywords
valve
flashboard
plate
liquid
cover
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Withdrawn
Application number
CN202110107439.4A
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Chinese (zh)
Inventor
王建建
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Individual
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Individual
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Priority to CN202110107439.4A priority Critical patent/CN112762184A/en
Publication of CN112762184A publication Critical patent/CN112762184A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/0227—Packings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K41/00—Spindle sealings
    • F16K41/02—Spindle sealings with stuffing-box ; Sealing rings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sliding Valves (AREA)

Abstract

The invention belongs to the technical field of valves, and particularly relates to an automatic compensation type industrial gate valve which comprises a valve body, a supporting plate, a gate plate, a valve rod, a valve cover, an extrusion plate, a liquid bag, a sealing block, a top cover, a hand wheel, a first sealing ring, a second sealing ring and a first screw; according to the invention, the valve rod is driven to rotate by the rotating hand wheel, so that the gate plate rotationally connected with the lower end of the valve rod falls into the valve body, and further, the liquid in the pipeline of the valve body is blocked, and the effect of stopping the liquid is achieved; the extrusion plates on the two sides of the flashboard are tightly attached to the flashboard, so that the liquid in the valve body pipeline is prevented from flowing out; the gate plate moves upwards by rotating the hand wheel, so that liquid can flow through the pipeline; the flashboard moves upwards to extrude the liquid bag, so that the lower end of the liquid bag is in expansion deformation with the part in contact with the extrusion plate, the extrusion plate is enabled to be always attached to two sides of the flashboard, liquid is guaranteed not to flow into the upper part of the valve body from a pipeline of the valve body, the sealing performance of the extrusion plate is guaranteed when the flashboard moves, and the sealing effect of the device is enabled to be better.

Description

Automatic compensation formula industrial gate valve
Technical Field
The invention belongs to the technical field of valves, and particularly relates to an automatic compensation type industrial gate valve.
Background
The industrial gate valve is a shutter, the moving direction of the shutter is perpendicular to the fluid direction, the gate valve can only be fully opened and fully closed, and cannot be adjusted and throttled. The industrial gate valve is an important accessory for controlling medium flow on an industrial pipeline, and can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like.
Most of the existing industrial gate valves only realize the function of controlling liquid flow, and do not solve the sealing problem of each part in the gate valve; the gate valve needs to control the flow of liquid, and needs to have good sealing performance, so that sealing in the valve body needs to be realized, and the gate valve can be always kept sealed in the moving process of the gate plate; therefore, the gate valve can be always kept sealed when the flashboard moves, effective control of the gate valve on fluid can be guaranteed, and the fluid is guaranteed not to be interfered by the outside world.
Disclosure of Invention
In order to make up the defects of the prior art, the invention provides an automatic compensation type industrial gate valve. The invention is mainly used for solving the problem that the gate valve in the prior art cannot keep good sealing all the time in the moving process of the gate plate, namely solving the problem that liquid in the valve body may flow out of the gate valve when the gate plate works.
The technical scheme adopted by the invention for solving the technical problems is as follows: an automatic compensation type industrial gate valve comprises a valve body, a supporting plate, a gate plate, a valve rod, a valve cover, an extrusion plate, a liquid bag, a sealing block, a top cover, a hand wheel, a first sealing ring, a second sealing ring and a first screw; the middle part of the valve body is provided with the flashboard; circular grooves are symmetrically arranged on two sides of the gate plate; the circular groove is arranged on the valve body; the supporting plate is arranged in the circular groove; the supporting plate consists of two semicircular arc plates; the upper end of the supporting plate is connected with the extrusion plate in a sliding manner; the liquid bag is arranged above the extrusion plate; the liquid bag is arranged in the space inside the valve body and the valve cover; the liquid bag is filled with liquid; the valve body is connected with the valve cover through a bolt; the first sealing ring is arranged between the valve cover and the valve body; the valve cover is in threaded connection with the valve rod; the lower end of the valve rod is rotatably connected with the flashboard; the upper end of the valve rod is fixedly connected with the hand wheel; a column groove is formed in the upper part of the valve cover; the sealing block is arranged in the column groove; the sealing block is in threaded connection with the valve rod; the top cover is arranged at the upper end of the valve cover; the second sealing ring is arranged between the valve cover and the top cover; the valve cover and the top cover are connected through the first screw.
When the valve operates, the valve rod is driven to rotate by the rotating hand wheel, and the valve rod is in threaded connection with the valve cover, so that the valve rod can axially move when rotating, and the flashboard rotationally connected with the lower end of the valve rod falls into the valve body by controlling the valve rod to move downwards, so that liquid in a pipeline of the valve body is blocked, and the effect of stopping the liquid is achieved; at the moment, the lower parts of the extrusion plates on the two sides of the flashboard are supported by the supporting plate, and the two extrusion plates are tightly attached to the two sides of the flashboard, so that the liquid in the valve body pipeline is prevented from flowing out; when liquid is required to pass through, the hand wheel is rotated to enable the flashboard to move upwards, and then the liquid flows through the pipeline; at the moment, the flashboard moves upwards, the flashboard can extrude a liquid bag above the flashboard, the shape of the liquid bag is changed under the pressure action of liquid in the liquid bag, the contact part of the lower end of the liquid bag and the extrusion plate can expand and deform, and the lower end of the extrusion plate is supported by the support plate, so that the extrusion plate can slide on the support plate through the liquid bag, and the extrusion plate is always attached to two sides of the flashboard, so that the liquid can not flow into the upper part of the valve body from a pipeline of the valve body when the flashboard moves, the extrusion plate moves along with the flashboard, the sealing performance of the extrusion plate when the flashboard moves is guaranteed, and the sealing effect; the sealing ring is arranged between the valve body and the valve cover, the sealing ring is arranged between the valve cover and the top cover, and the sealing block is arranged at the upper end of the valve cover, so that the liquid in the device is prevented from flowing out of the device, and the sealing effect of the device is ensured.
Preferably, the valve cover is provided with a screw hole; the screw hole is internally threaded with a second screw; a spring is arranged at the lower end of the second screw; a metal plate is arranged at the lower end of the spring; the metal plate is fixedly connected with the lower end of the spring; the metal plate is arranged inside the valve cover.
The valve cover is provided with a screw hole, a second screw and a spring are arranged in the screw hole, the lower end of the spring is connected with the metal plate, the second screw is rotated to adjust the pretightening force of the spring, so that the metal plate can elastically support the liquid bag, when the flashboard is closed, the metal plate extrudes the liquid bag to increase the internal pressure of the liquid bag, and further, the extrusion plate is in closer contact with the flashboard, so that the waterproof effect of the extrusion plate is better; when the flashboard is opened, because the metal plate is elastic and supports the liquid bag, the liquid bag can extrude the metal plate when deforming, and then the metal plate is moved up, the space for the deformation of the liquid bag is provided, the internal pressure of the liquid bag is prevented from being too large, the flashboard cannot be further lifted, and the internal blocking of the device is prevented.
Preferably, the lower end of the extrusion plate is provided with a sliding part; one side of the extrusion plate close to the flashboard is provided with a clinging part; the sliding part is connected to the supporting plate in a sliding mode; a rubber sheet is arranged on one surface of the clinging portion close to the flashboard; the pressing plate may be elastically deformable.
The extrusion plate capable of elastically deforming is arranged, and the extrusion plate is conveniently arranged in the valve body by deforming the extrusion plate; the lower end of the extrusion plate is provided with the sliding part, so that the liquid bag can apply pressure to the extrusion plate conveniently, the extrusion plate can slide on the supporting plate, and the extrusion plate can be attached to the flashboard; set up the sheet rubber on the portion is pasted tightly to the stripper plate, make the laminating inseparabler between stripper plate and the flashboard, promoted the water-proof effects of stripper plate.
Preferably, the top cover is provided with threads; the top cover is in threaded connection with the valve rod; the lower end of the top cover is provided with an extrusion part.
The top cover is provided with threads, and the top cover is arranged above the valve cover, so that the upper part of the valve rod is in threaded connection with the top cover, and the middle part of the valve rod is in threaded connection with the valve cover, so that the valve rod is more stably rotated, and the threaded connection of the valve rod is firmer; set up the extrusion portion at the lower extreme of top cap, when screwing up the top cap in the valve gap top through the screw thread, the sealed piece of post inslot can be extruded to the extrusion portion, and then can make sealed piece take place axial deformation, makes the screw thread on the sealed piece closely cooperate with the screw thread on the valve rod, has further promoted the water-proof effects of sealed piece.
Preferably, the liquid in the liquid sac is mercury.
Set up the liquid in the liquid bag and be mercury, because the temperature coefficient of mercury is very little, so mercury receives ambient temperature to influence very little, fills up mercury in the liquid bag, can make the liquid bag receive temperature variation and the deformation that takes place is very little, has guaranteed the stability of liquid bag, and then makes the device can be applicable to the liquid of more temperature states to and the climatic environment of a lot of differences, make the application scope of device wider.
Preferably, the first screw is a set screw.
The top cover is connected with the valve rod through threads, so that the top cover can be tightly attached to the valve cover through rotation, the first screw is a set screw, and the first screw is a screw special for fixing the relative position of a machine part, so that the relative position between the top cover and the valve cover can be fixed through the first screw; because the pressing force that a screw was applyed to top cap and valve gap is less, so the reaction force that a screw received is less, has prevented the pine of a screw and has loosened, has guaranteed the stability of being connected between top cap and the valve gap.
The invention has the following beneficial effects:
1. according to the invention, the valve rod is driven to rotate by the rotating hand wheel, and the valve rod is in threaded connection with the valve cover, so that the valve rod can axially move when rotating, and the flashboard rotationally connected with the lower end of the valve rod falls into the valve body by controlling the valve rod to move downwards, so that liquid in a pipeline of the valve body is blocked, and the effect of stopping the liquid is achieved; at the moment, the lower parts of the extrusion plates on the two sides of the flashboard are supported by the supporting plate, and the two extrusion plates are tightly attached to the two sides of the flashboard, so that the liquid in the valve body pipeline is prevented from flowing out; when liquid is required to pass through, the hand wheel is rotated to enable the flashboard to move upwards, and then the liquid flows through the pipeline; at the moment, the flashboard moves upwards, the flashboard can extrude a liquid bag above the flashboard, the shape of the liquid bag is changed under the pressure action of liquid in the liquid bag, the contact part of the lower end of the liquid bag and the extrusion plate can expand and deform, and the lower end of the extrusion plate is supported by the support plate, so that the extrusion plate can slide on the support plate through the liquid bag, and the extrusion plate is always attached to two sides of the flashboard, so that the liquid can not flow into the upper part of the valve body from a pipeline of the valve body when the flashboard moves, the extrusion plate moves along with the flashboard, the sealing performance of the extrusion plate when the flashboard moves is guaranteed, and the sealing effect; the sealing ring is arranged between the valve body and the valve cover, the sealing ring is arranged between the valve cover and the top cover, and the sealing block is arranged at the upper end of the valve cover, so that the liquid in the device is prevented from flowing out of the device, and the sealing effect of the device is ensured.
2. According to the invention, the valve cover is provided with the screw hole, the screw hole is internally provided with the second screw and the spring, the lower end of the spring is connected with the metal plate, the second screw is rotated to adjust the pretightening force of the spring, so that the metal plate can elastically support the liquid bag, when the flashboard is closed, the metal plate extrudes the liquid bag to increase the internal pressure of the liquid bag, and further, the extrusion plate is in closer contact with the flashboard, so that the waterproof effect of the extrusion plate is better; when the flashboard is opened, because the metal plate is elastic and supports the liquid bag, the liquid bag can extrude the metal plate when deforming, and then the metal plate is moved up, the space for the deformation of the liquid bag is provided, the internal pressure of the liquid bag is prevented from being too large, the flashboard cannot be further lifted, and the internal blocking of the device is prevented.
3. The extrusion plate capable of elastically deforming is arranged, and the extrusion plate is conveniently arranged in the valve body by deforming the extrusion plate; the lower end of the extrusion plate is provided with the sliding part, so that the liquid bag can apply pressure to the extrusion plate conveniently, the extrusion plate can slide on the supporting plate, and the extrusion plate can be attached to the flashboard; set up the sheet rubber on the portion is pasted tightly to the stripper plate, make the laminating inseparabler between stripper plate and the flashboard, promoted the water-proof effects of stripper plate.
4. According to the invention, the top cover is provided with threads, and the top cover is arranged above the valve cover, so that the upper part of the valve rod is in threaded connection with the top cover, and the middle part of the valve rod is in threaded connection with the valve cover, so that the valve rod is more stable to rotate, and the threaded connection of the valve rod is firmer; set up the extrusion portion at the lower extreme of top cap, when screwing up the top cap in the valve gap top through the screw thread, the sealed piece of post inslot can be extruded to the extrusion portion, and then can make sealed piece take place axial deformation, makes the screw thread on the sealed piece closely cooperate with the screw thread on the valve rod, has further promoted the water-proof effects of sealed piece.
5. According to the invention, the liquid in the liquid bag is set to be mercury, and the temperature coefficient of mercury is very small, so that the influence of external temperature on mercury is very small, and the liquid bag is filled with mercury, so that the deformation of the liquid bag caused by temperature change is very small, the stability of the liquid bag is ensured, and the device can be suitable for liquids in more temperature states and different climatic environments, and the application range of the device is wider.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a schematic view showing the overall structure of a gate valve according to the present invention;
FIG. 2 is a schematic view showing an internal structure of a gate valve according to the present invention;
FIG. 3 is a schematic structural view of a valve body and a valve cover according to the present invention;
FIG. 4 is a schematic view showing the internal structure of the valve body according to the present invention;
FIG. 5 is a schematic view of the construction of the pressing plate and the supporting plate in the present invention;
fig. 6 is a schematic view of the internal structure of the valve cover according to the present invention;
FIG. 7 is a schematic structural view of a valve cover and overcap of the present invention;
in the figure: the valve comprises a valve body 1, a supporting plate 2, a gate plate 3, a valve rod 4, a valve cover 5, a screw hole 51, a second screw 52, a spring 53, a metal plate 54, an extrusion plate 6, a sliding part 61, a tight adhering part 62, a liquid bag 7, a sealing block 8, a top cover 9, a hand wheel 10, a first sealing ring 11, a second sealing ring 12 and a first screw 13.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 3, an automatic compensation type industrial gate valve comprises a valve body 1, a support plate 2, a gate plate 3, a valve rod 4, a valve cover 5, an extrusion plate 6, a liquid bag 7, a sealing block 8, a top cover 9, a hand wheel 10, a first sealing ring 11, a second sealing ring 12 and a first screw 13; the middle part of the valve body 1 is provided with the flashboard 3; circular grooves are symmetrically arranged on two sides of the gate plate 3; the circular groove is arranged on the valve body 1; the supporting plate 2 is arranged in the circular groove; the supporting plate 2 consists of two semicircular arc plates; the upper end of the supporting plate 2 is connected with the extrusion plate 6 in a sliding manner; the liquid bag 7 is arranged above the extrusion plate 6; the liquid bag 7 is arranged in the space inside the valve body 1 and the valve cover 5; the liquid bag 7 is filled with liquid; the valve body 1 is connected with the valve cover 5 through a bolt; the first sealing ring 11 is arranged between the valve cover 5 and the valve body 1; the valve cover 5 is in threaded connection with the valve rod 4; the lower end of the valve rod 4 is rotatably connected with the gate plate 3; the upper end of the valve rod 4 is fixedly connected with the hand wheel 10; a column groove is formed in the upper portion of the valve cover 5; the sealing block 8 is arranged in the column groove; the sealing block 8 is in threaded connection with the valve rod 4; the top cover 9 is arranged at the upper end of the valve cover 5; the second sealing ring 12 is arranged between the valve cover 5 and the top cover 9; the valve cover 5 and the top cover 9 are connected through the first screw 13.
When the valve operates, the valve rod 4 is driven to rotate by rotating the hand wheel 10, and the valve rod 4 is in threaded connection with the valve cover 5, so that the valve rod 4 can move axially when rotating, and the gate plate 3 rotationally connected with the lower end of the valve rod 4 falls into the valve body 1 by controlling the valve rod 4 to move downwards, so that liquid in a pipeline of the valve body 1 is blocked, and the effect of stopping the liquid is achieved; at the moment, the lower parts of the extrusion plates 6 on the two sides of the flashboard 3 are supported by the supporting plate 2, and the two extrusion plates 6 are tightly attached to the two sides of the flashboard 3, so that the liquid in the pipeline of the valve body 1 is prevented from flowing out; when liquid is required to pass through, the hand wheel 10 is rotated to enable the flashboard 3 to move upwards, and then the liquid flows through the pipeline; at the moment, the flashboard 3 moves upwards, the flashboard 3 can extrude the liquid bag 7 above the flashboard 3, the shape of the liquid bag 7 is changed under the pressure action of liquid in the liquid bag 7, the contact part of the lower end of the liquid bag 7 and the extrusion plate 6 can expand and deform, and the lower end of the extrusion plate 6 is supported by the support plate 2, so that the extrusion plate 6 can slide on the support plate 2 by the liquid bag 7, and further the extrusion plate 6 is always attached to two sides of the flashboard 3, so that the liquid can not flow into the upper part of the valve body 1 from the pipeline of the valve body 1 when the flashboard 3 moves, the extrusion plate 6 moves along with the flashboard 3, the sealing performance of the extrusion plate 6 when the flashboard 3 moves is ensured, and the sealing; set up No. one sealing washer 11 between valve body 1 and valve gap 5, set up No. two sealing washers 12 between valve gap 5 and top cap 9 and set up sealed piece 8 in valve gap 5 upper end, all realized preventing that the liquid in the device from flowing out from the device, guaranteed the sealed effect of device.
As shown in fig. 3 and 6, the valve cover 5 is provided with a screw hole 51; a second screw 52 is connected with the screw hole 51 through internal threads; a spring 53 is arranged at the lower end of the second screw 52; a metal plate 54 is arranged at the lower end of the spring 53; the metal plate 54 is fixedly connected with the lower end of the spring 53; the metal plate 54 is disposed inside the valve cap 5.
The valve cover 5 is provided with a screw hole 51, the screw hole 51 is internally provided with a second screw 52 and a spring 53, the lower end of the spring 53 is connected with a metal plate 54, the second screw 52 is rotated to adjust the pretightening force of the spring 53, so that the metal plate 54 can elastically support the liquid bag 7, when the flashboard 3 is closed, the metal plate 54 extrudes the liquid bag 7 to increase the internal pressure of the liquid bag 7, and further the extrusion plate 6 is in closer contact with the flashboard 3, so that the waterproof effect of the extrusion plate 6 is better; when the flashboard 3 is opened, the metal plate 54 elastically supports the liquid bag 7, and the liquid bag 7 can press the metal plate 54 when being deformed, so that the metal plate 54 moves upwards to provide a space for the deformation of the liquid bag 7, the internal pressure of the liquid bag 7 is prevented from being too high, the flashboard 3 cannot be further lifted, and the internal clamping of the device is prevented.
As shown in fig. 2, 4 and 5, the lower end of the pressing plate 6 is provided with a sliding part 61; a close part 62 is arranged on one side of the extrusion plate 6 close to the flashboard 3; the sliding part 61 is connected on the supporting plate 2 in a sliding way; a rubber sheet is arranged on one surface of the clinging portion 62 close to the flashboard 3; the pressing plate 6 can be elastically deformed.
The extrusion plate 6 capable of elastically deforming is arranged, and the extrusion plate 6 is conveniently arranged inside the valve body 1 by deforming the extrusion plate 6; the sliding part 61 is arranged at the lower end of the extrusion plate 6, so that the liquid bag 7 can apply pressure to the extrusion plate 6 conveniently, the extrusion plate 6 slides on the supporting plate 2, and the extrusion plate 6 is tightly attached to the flashboard 3; set up the sheet rubber on the tight portion 62 of stripper plate 6 subsides, make the laminating inseparabler between stripper plate 6 and the flashboard 3, promoted the water-proof effects of stripper plate 6.
As shown in fig. 2, 3, 6 and 7, the top cover 9 is threaded; the top cover 9 is in threaded connection with the valve rod 4; the lower end of the top cover 9 is provided with a squeezing part.
The top cover 9 is provided with threads, and the top cover 9 is arranged above the valve cover 5, so that the upper part of the valve rod 4 is in threaded connection with the top cover 9, and the middle part of the valve rod 4 is in threaded connection with the valve cover 5, so that the valve rod 4 is more stable to rotate, and the threaded connection of the valve rod 4 is firmer; the lower end of the top cover 9 is provided with an extrusion part, when the top cover 9 is screwed above the valve cover 5 through threads, the extrusion part can extrude the sealing block 8 in the column groove, further the sealing block 8 can be axially deformed, the threads on the sealing block 8 are tightly matched with the threads on the valve rod 4, and the waterproof effect of the sealing block 8 is further improved.
As shown in fig. 2 and 3, the liquid in the liquid bag 7 is mercury.
Set up the liquid in the liquid bag 7 and be mercury, because the temperature coefficient of mercury is very little, so mercury receives ambient temperature to influence very little, fills up mercury in liquid bag 7, can make liquid bag 7 receive temperature variation and the deformation that takes place is very little, has guaranteed liquid bag 7's stability, and then makes the device can be applicable to the liquid of more temperature states to and the climatic environment of a lot of differences, make the application scope of device wider.
As shown in fig. 7, the first screw 13 is a set screw.
Because the top cover 9 is in threaded connection with the valve rod 4, the top cover 9 can be tightly attached to the valve cover 5 through rotation, the first screw 13 is a set screw, and the first screw 13 can fix the relative position between the top cover 9 and the valve cover 5 because the set screw is a screw specially used for fixing the relative position of a machine part; because the pressing force applied to the top cover 9 and the valve cover 5 by the first screw 13 is small, the reaction force applied to the first screw 13 is small, the first screw 13 is prevented from loosening, and the connection stability between the top cover 9 and the valve cover 5 is ensured.
When the valve operates, the valve rod 4 is driven to rotate by rotating the hand wheel 10, and the valve rod 4 is in threaded connection with the valve cover 5, so that the valve rod 4 can move axially when rotating, and the gate plate 3 rotationally connected with the lower end of the valve rod 4 falls into the valve body 1 by controlling the valve rod 4 to move downwards, so that liquid in a pipeline of the valve body 1 is blocked, and the effect of stopping the liquid is achieved; at the moment, the lower parts of the extrusion plates 6 on the two sides of the flashboard 3 are supported by the supporting plate 2, and the two extrusion plates 6 are tightly attached to the two sides of the flashboard 3, so that the liquid in the pipeline of the valve body 1 is prevented from flowing out; when liquid is required to pass through, the hand wheel 10 is rotated to enable the flashboard 3 to move upwards, and then the liquid flows through the pipeline; at the moment, the flashboard 3 moves upwards, the flashboard 3 can extrude the liquid bag 7 above the flashboard 3, the shape of the liquid bag 7 is changed under the pressure action of liquid in the liquid bag 7, the contact part of the lower end of the liquid bag 7 and the extrusion plate 6 can expand and deform, and the lower end of the extrusion plate 6 is supported by the support plate 2, so that the extrusion plate 6 can slide on the support plate 2 by the liquid bag 7, and further the extrusion plate 6 is always attached to two sides of the flashboard 3, so that the liquid can not flow into the upper part of the valve body 1 from the pipeline of the valve body 1 when the flashboard 3 moves, the extrusion plate 6 moves along with the flashboard 3, the sealing performance of the extrusion plate 6 when the flashboard 3 moves is ensured, and the sealing; set up No. one sealing washer 11 between valve body 1 and valve gap 5, set up No. two sealing washers 12 between valve gap 5 and top cap 9 and set up sealed piece 8 in valve gap 5 upper end, all realized preventing that the liquid in the device from flowing out from the device, guaranteed the sealed effect of device.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (6)

1. The utility model provides an automatic compensation formula industry gate valve which characterized in that: the valve comprises a valve body (1), a supporting plate (2), a flashboard (3), a valve rod (4), a valve cover (5), an extrusion plate (6), a liquid bag (7), a sealing block (8), a top cover (9), a hand wheel (10), a first sealing ring (11), a second sealing ring (12) and a first screw (13); the middle part of the valve body (1) is provided with the flashboard (3); circular grooves are symmetrically arranged on two sides of the gate plate (3); the circular groove is arranged on the valve body (1); the supporting plate (2) is arranged in the circular groove; the supporting plate (2) consists of two semicircular arc plates; the upper end of the supporting plate (2) is connected with the extrusion plate (6) in a sliding manner; the liquid bag (7) is arranged above the extrusion plate (6); the liquid bag (7) is arranged in the space inside the valve body (1) and the valve cover (5); the liquid bag (7) is filled with liquid; the valve body (1) is connected with the valve cover (5) through a bolt; the first sealing ring (11) is arranged between the valve cover (5) and the valve body (1); the valve cover (5) is in threaded connection with the valve rod (4); the lower end of the valve rod (4) is rotatably connected with the flashboard (3); the upper end of the valve rod (4) is fixedly connected with the hand wheel (10); a column groove is arranged at the upper part of the valve cover (5); the sealing block (8) is arranged in the column groove; the sealing block (8) is in threaded connection with the valve rod (4); the top cover (9) is arranged at the upper end of the valve cover (5); the second sealing ring (12) is arranged between the valve cover (5) and the top cover (9); the valve cover (5) is connected with the top cover (9) through the first screw (13).
2. The self-compensating industrial gate valve of claim 1, wherein: a screw hole (51) is formed in the valve cover (5); a second screw (52) is connected with the screw hole (51) through internal threads; a spring (53) is arranged at the lower end of the second screw (52); a metal plate (54) is arranged at the lower end of the spring (53); the metal plate (54) is fixedly connected with the lower end of the spring (53); the metal plate (54) is disposed inside the valve cover (5).
3. The self-compensating industrial gate valve of claim 2, wherein: the lower end of the extrusion plate (6) is provided with a sliding part (61); a clinging part (62) is arranged on one side, close to the flashboard (3), of the extrusion plate (6); the sliding part (61) is connected to the supporting plate (2) in a sliding manner; a rubber sheet is arranged on one surface of the clinging part (62) close to the flashboard (3); the pressing plate (6) is elastically deformable.
4. The self-compensating industrial gate valve of claim 3, wherein: the top cover (9) is provided with threads; the top cover (9) is in threaded connection with the valve rod (4); the lower end of the top cover (9) is provided with an extrusion part.
5. The self-compensating industrial gate valve of claim 4, wherein: the liquid in the liquid sac (7) is mercury.
6. The self-compensating industrial gate valve of claim 5, wherein: the first screw (13) is a set screw.
CN202110107439.4A 2021-01-27 2021-01-27 Automatic compensation formula industrial gate valve Withdrawn CN112762184A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110107439.4A CN112762184A (en) 2021-01-27 2021-01-27 Automatic compensation formula industrial gate valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110107439.4A CN112762184A (en) 2021-01-27 2021-01-27 Automatic compensation formula industrial gate valve

Publications (1)

Publication Number Publication Date
CN112762184A true CN112762184A (en) 2021-05-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110107439.4A Withdrawn CN112762184A (en) 2021-01-27 2021-01-27 Automatic compensation formula industrial gate valve

Country Status (1)

Country Link
CN (1) CN112762184A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114033860A (en) * 2021-11-19 2022-02-11 范红梅 Gate valve for high-pressure liquid conveying pipeline

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114033860A (en) * 2021-11-19 2022-02-11 范红梅 Gate valve for high-pressure liquid conveying pipeline
CN114033860B (en) * 2021-11-19 2023-08-11 希佛隆阀门集团有限公司 Gate valve for high-pressure liquid conveying pipeline

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