CN211738045U - But special-purpose vehicle high-speed joint's pneumatic trip valve - Google Patents
But special-purpose vehicle high-speed joint's pneumatic trip valve Download PDFInfo
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- CN211738045U CN211738045U CN202020380449.6U CN202020380449U CN211738045U CN 211738045 U CN211738045 U CN 211738045U CN 202020380449 U CN202020380449 U CN 202020380449U CN 211738045 U CN211738045 U CN 211738045U
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Abstract
The utility model discloses a pneumatic cut-off valve capable of being quickly connected for a special vehicle, which comprises a valve body assembly, wherein the valve body assembly sequentially comprises a lower valve body provided with a fluid cavity, a middle valve body in threaded connection with the lower valve body and an upper valve cover in threaded connection with the middle valve body from bottom to top; the utility model discloses an adopt the pipeline adapter and compress tightly the spanner cooperation and be connected with the valve body subassembly, the action is simple, save time and manpower, can realize being connected of trip valve and steel pipe, hose through the quick-operation joint who switches different patterns, has made things convenient for the change of trip valve, and application scope is wide.
Description
Technical Field
The utility model belongs to the technical field of the pneumatic trip valve, especially, relate to a but special-purpose vehicle high-speed joint's pneumatic trip valve.
Background
The pneumatic cut-off valve is mainly used for quick cut-off, has the characteristics of simple structure, sensitive response, reliable action and the like, and can be widely applied to industrial production departments such as petroleum, chemical industry, metallurgy and the like. The source of the pneumatic shut-off valve requires filtered compressed air and the media flowing through the valve body should be contaminant-free and particle-free liquids and gases.
A special-purpose vehicle pneumatic trip valve for on motor sweeper mainly used controls the cutting off of each low pressure water route, can realize like function such as preceding washing, back watering. However, the conventional pneumatic cut-off valve is generally screwed with a pneumatic cut-off valve by adopting internal threads and processing external threads on a steel pipe. When the pneumatic stop valve is connected with the hose, the screw thread can only be machined by using the steel pipe firstly, the screw thread is screwed into the pneumatic stop valve, the hose swallows the steel pipe again, the pipe clamp is used for fastening, and the connection can be completed. In addition, the structure operating force of current pneumatic trip valve is little, and it is big to use pressure differential, and sealed effect is relatively poor, influences the performance of pneumatic trip valve.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a but pneumatic trip valve of quick connection of special-purpose vehicle that simple structure, reasonable in design, easy dismounting, leakproofness are better, the operating force is better, use pressure differential is big is provided.
In order to solve the technical problem, the technical scheme of the utility model is that: but special-purpose vehicle high-speed joint's pneumatic trip valve, including the valve body subassembly, its characterized in that: the valve body assembly sequentially comprises a lower valve body provided with a fluid cavity, a middle valve body in threaded connection with the lower valve body and an upper valve cover in threaded connection with the middle valve body from bottom to top, two channel platforms which are matched with each other to form a fluid channel are arranged in the fluid cavity, a piston cavity is arranged in the middle valve body, a control piston is slidably arranged in the piston cavity, a control valve rod of which the bottom end extends into the fluid cavity is arranged on the control piston, the bottom end of the control valve rod is matched with the channel platforms to be used for communicating or cutting off the fluid channel, a control spring is connected between the top end of the control piston and the upper valve cover, an opening valve port which is communicated with the piston cavity and is positioned below the control piston is arranged on the middle valve body, and a closing valve port which is positioned above the control piston is arranged on the upper valve cover; the left and right connecting ends of the lower valve body are respectively provided with a pipeline adapter, one end of the pipeline adapter is hinged with a plurality of compression wrenches which are in compression connection or disconnection with the lower valve body, the head of each compression wrench is provided with a compression bulge, a compression groove which is matched with the compression bulge in a corresponding mode is arranged on the pipe wall of the connecting end of the lower valve body, and a sealing ring is arranged on the butt joint surface of the pipeline adapter and the lower valve body.
According to the preferable technical scheme, a mounting hole penetrates through the pipe wall of the pipeline adapter, wrench hinge seats are arranged on the two sides of the mounting hole, the end, close to the wrench, of the pipeline adapter, the pressing protrusion is arranged at one end of the pressing wrench and extends into the mounting hole to be matched with the pressing groove to achieve pressing connection or disconnection of the pressing wrench.
As a preferable technical scheme, a valve rod upper seal is arranged on a contact surface between the control valve rod and the middle valve body; and a lower valve rod seal is arranged on a contact surface between the control valve rod and the lower valve body.
Preferably, a channel gasket for sealing the fluid channel is installed at a bottom end of the control valve stem.
As a preferred technical scheme, a valve body gasket is arranged on a contact surface between the lower valve body and the middle valve body; and a valve cover gasket is arranged on the contact surface between the upper valve cover and the middle valve body.
As a preferable technical scheme, a piston seal is arranged on the contact surface of the control piston and the inner wall of the middle valve body.
By adopting the technical scheme, the pneumatic cut-off valve capable of being quickly connected for the special vehicle comprises a valve body assembly, wherein the valve body assembly sequentially comprises a lower valve body provided with a fluid cavity, a middle valve body in threaded connection with the lower valve body and an upper valve cover in threaded connection with the middle valve body from bottom to top, two channel platforms which are matched with each other to form a fluid channel are arranged in the fluid cavity, a piston cavity is arranged in the middle valve body, a control piston is slidably arranged in the piston cavity, a control valve rod with the bottom end extending into the fluid cavity is arranged on the control piston, the bottom end of the control valve rod is matched with the channel platforms to be communicated or cut off the fluid channel, a control spring is connected between the top end of the control piston and the upper valve cover, and an opening valve port which is communicated with the piston cavity and is positioned below the control piston is arranged on the middle valve, a closing valve port positioned above the control piston is arranged on the upper valve cover; two ends of the lower valve body are provided with quick-insertion anti-skidding structures which are matched and hermetically connected with the hose; the utility model has the advantages that: the utility model adopts the matching of the pipeline adapter and the compression wrench to be connected with the valve body assembly, has simple action, saves time and manpower, can realize the connection of the cut-off valve with the steel pipe and the hose by switching the quick connectors with different styles, facilitates the replacement of the cut-off valve and has wide application range; has the following advantages: the utility model has novel and reasonable design, unique structure, light weight and rapid opening and closing; the utility model adopts the piston type actuating mechanism, which has the advantages of large operating force and large using pressure difference; the utility model adopts the soft sealing structure, has the advantages of reliable sealing, sensitive action, easy realization of automatic control, long service life and the like; because the valve rod and the valve body adopt a soft sealing mode, the product has strict cutting-off function and has the advantages of simple structure, small volume, reliable action, convenient maintenance and the like.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:
fig. 1 is a schematic structural diagram of an embodiment of the present invention;
in the figure: 1-a lower valve body; 2-middle valve body; 3-upper valve cover; 4-a control piston; 5-control valve stem; 6-control the spring; 7-opening a valve port; 8-closing the valve port; 9-a pipeline adapter; 10-a compression wrench; 11-pressing the protrusion; 12-pressing the groove; 13-sealing ring; 14-sealing on the valve rod; 15-sealing under the valve rod; 16-channel gasket; 17-valve body gasket; 18-bonnet gasket; 19-piston seal.
Detailed Description
The invention is further explained below with reference to the drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention have been described by way of illustration only. Needless to say, a person skilled in the art will recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.
As shown in fig. 1, the pneumatic cut-off valve capable of being quickly connected for special vehicle comprises a valve body assembly, the valve body assembly sequentially comprises a lower valve body 1 provided with a fluid cavity, a middle valve body 2 connected with the lower valve body 1 through threads and an upper valve cover 3 connected with the middle valve body 2 through threads from bottom to top, two channel platforms matched with each other to form a fluid channel are arranged in the fluid cavity, the channel platforms separate the fluid cavity into two cavities, namely a fluid inlet cavity and a fluid outlet cavity, the fluid channel is used for passing fluid, a piston cavity is arranged in the middle valve body 2, a control piston 4 is slidably arranged in the piston cavity, a control valve rod 5 with the bottom end extending into the fluid cavity is arranged on the control piston 4, the top end of the control valve rod 5 is connected with the control piston 4 through threads and penetrates through the control piston 4, and the control valve rod 5 is locked with the control piston 4 through, the bottom end of the control valve rod 5 is matched with the channel platform to be used for communicating or cutting off the fluid channel, a control spring 6 is connected between the top end of the control piston 4 and the upper valve cover 3, an opening valve port 7 which is communicated with the piston cavity and is positioned below the control piston 4 is arranged on the middle valve body 2, a threaded hole is correspondingly formed in the opening valve port 7 and is used for connecting an air pipe, a closing valve port 8 which is positioned above the control piston 4 is arranged on the upper valve cover 3, and a threaded hole is correspondingly formed in the closing valve port 8 and is used for connecting the air pipe. The valve body assembly adopts a piston type execution structure, so that the pneumatic stop valve has the advantages of large operating force, large using pressure difference and the like.
The left and right connecting ends of the lower valve body 1 are respectively and correspondingly provided with a pipeline adapter 9, one end of the pipeline adapter 9 is hinged with a plurality of compression wrenches 10 which are in compression connection or disconnection with the lower valve body 1, the head of each compression wrench 10 is provided with a compression bulge 11, a compression groove 12 which is matched with the compression bulge 11 correspondingly is arranged on the pipe wall of the connecting end of the lower valve body 1, and a sealing ring 13 is arranged on the butt joint surface of the lower valve body 1 and the pipeline adapter 9. Run through on the pipe wall of pipeline adapter 9 and be provided with the mounting hole, the outer wall of pipeline adapter 9 is located the both sides of mounting hole are provided with the articulated seat of spanner, the one end that compresses tightly spanner 10 articulates on the articulated seat of spanner, it sets up to compress tightly protruding 11 compress tightly the one end of spanner 10 and stretch into to realize in the mounting hole with compress tightly the recess 12 cooperation compressing tightly connection or the disconnection of spanner 10. The other end of the pipeline adapter 9 is connected with a steel pipe or a hose, when the pipeline adapter is connected with the steel pipe, a threaded connection mode can be adopted, and a sealing washer is installed, the mode is favorable for the disassembly and the replacement of the pipeline adapter 9, the mode of welding and fixing can be adopted to be connected with the steel pipe, the sealing performance of the joint is better, when the pipeline adapter is connected with the hose, the other end of the pipeline adapter 9 is provided with a tooth-shaped structure, and the pipeline adapter is more convenient to connect with the hose and has better sealing performance.
When a valve body assembly is cleaned and replaced, only the compression wrench 10 needs to be pulled to separate the compression protrusion 11 from the compression groove 12, at the moment, the valve body assembly can be taken down from the pipeline adapter 9, when the valve body assembly is installed, the connecting end of the lower valve body 1 extends into the pipeline adapter 9, then the compression handle is pulled to compress the compression protrusion 11 in the compression groove 12, at the moment, the lower valve body 1 and the pipeline adapter 9 are in a fixed connection state, the valve body assembly is quickly disassembled and assembled in this way, the mode that the valve body assembly is directly connected to a steel pipe through threads in the prior art is not needed, time and labor are saved in installation, in addition, various installation angles of the valve body assembly can be adjusted according to use requirements, and because the sealing ring 13 is installed in the pipeline adapter 9, the sealing relation of the connecting part between the pipeline adapter 9 and the lower valve body 1 can be ensured, therefore, the sealing effect of the joint cannot be influenced when the angle is adjusted.
In this embodiment, the pressing groove 12 is a circular groove structure, and the pressing protrusion 11 is a circular arc protrusion matched with the arc surface of the circular groove structure. By adopting the circular matching mode, the processing is convenient, the matching locking effect is better, the surface of the pressing groove 12 and the pressing protrusion 11 is provided with the abrasion increasing coating, the friction force between the pressing groove and the pressing protrusion can be increased, the phenomenon of falling can not occur when the locking state is in a locking state, and the connection stability is ensured.
A valve rod upper seal 14 is arranged on the contact surface between the control valve rod 5 and the middle valve body 2, so that gas leakage is prevented; a lower valve rod seal 15 is arranged on a contact surface between the control valve rod 5 and the lower valve body 1, the lower valve rod seal 15 comprises a polytetrafluoroethylene sealing ring and a gasket, the gasket is clamped in a groove of the lower valve body 1, and the sealing ring and the gasket can prevent fluid from flowing into a cavity of the middle valve body 2; the bottom end of the control valve rod 5 is provided with a channel sealing gasket 16 for sealing the fluid channel, when the control valve rod 5 moves downwards, the bottom end of the control valve rod 5 abuts against the channel platform, the fluid channel matched with the channel platform is closed, and the fluid channel is sealed by the channel sealing gasket 16 after the fluid channel is closed, so that the liquid entering the liquid cavity cannot leak or permeate into the liquid outlet cavity.
A valve body gasket 17 is arranged on the contact surface between the lower valve body 1 and the middle valve body 2, so that the sealing effect of the joint is ensured; and a bonnet gasket 18 is arranged on the contact surface between the upper bonnet 3 and the middle valve body 2, so that the sealing effect of the joint is ensured. And a piston seal 19 is arranged on the contact surface of the control piston 4 and the inner wall of the middle valve body 2, so that gas leakage is prevented.
The utility model discloses in be provided with a plurality of seal structure for wholly improve the sealed effect of pneumatic trip valve.
The working principle of the pneumatic cut-off valve is as follows:
when the cut-off valve is not ventilated, the valve rod moves downwards under the action force of the control spring 6, and after the bottom end of the control valve rod 5 abuts against the channel platform, the fluid channel matched with the channel platform is closed and is in a free state;
when the air pipe connected with the valve closing port 8 on the upper valve cover 3 is ventilated, air pushes the control piston 4 to drive the valve rod to move downwards, the bottom end of the control valve rod 5 abuts against the channel platform, then the fluid channel matched with the channel platform is blocked, and the medium stops circulating;
when the air pipe connected with the opening valve 7 on the middle valve body 2 is ventilated, air pushes the control piston 4 to overcome the acting force of the control spring 6, the valve rod is driven to move upwards, a gap is generated between the bottom end of the control valve rod 5 and the channel platform, the fluid channel matched with the channel platform is opened, and the medium is recovered to circulate.
The utility model adopts the matching of the pipeline adapter 9 and the compression wrench 10 to connect with the valve body assembly, has simple action, saves time and labor, can realize the connection of the cut-off valve with the steel pipe and the hose by switching the quick connectors with different styles, facilitates the replacement of the cut-off valve and has wide application range; has the following advantages:
1. the utility model has novel and reasonable design, unique structure, light weight and rapid opening and closing;
2. the utility model adopts the piston type actuating mechanism, which has the advantages of large operating force and large using pressure difference;
3. the utility model adopts the soft sealing structure, has the advantages of reliable sealing, sensitive action, easy realization of automatic control, long service life and the like;
4. because the valve rod and the valve body adopt a soft sealing mode, the product has strict cutting-off function and has the advantages of simple structure, small volume, reliable action, convenient maintenance and the like.
The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. But special-purpose vehicle high-speed joint's pneumatic trip valve, including the valve body subassembly, its characterized in that: the valve body assembly sequentially comprises a lower valve body provided with a fluid cavity, a middle valve body in threaded connection with the lower valve body and an upper valve cover in threaded connection with the middle valve body from bottom to top, two channel platforms which are matched with each other to form a fluid channel are arranged in the fluid cavity, a piston cavity is arranged in the middle valve body, a control piston is slidably arranged in the piston cavity, a control valve rod of which the bottom end extends into the fluid cavity is arranged on the control piston, the bottom end of the control valve rod is matched with the channel platforms to be used for communicating or cutting off the fluid channel, a control spring is connected between the top end of the control piston and the upper valve cover, an opening valve port which is communicated with the piston cavity and is positioned below the control piston is arranged on the middle valve body, and a closing valve port which is positioned above the control piston is arranged on the upper valve cover; the left and right connecting ends of the lower valve body are respectively provided with a pipeline adapter, one end of the pipeline adapter is hinged with a plurality of compression wrenches which are in compression connection or disconnection with the lower valve body, the head of each compression wrench is provided with a compression bulge, a compression groove which is matched with the compression bulge in a corresponding mode is arranged on the pipe wall of the connecting end of the lower valve body, and a sealing ring is arranged on the butt joint surface of the pipeline adapter and the lower valve body.
2. The quick-connect pneumatic shut-off valve for special-purpose vehicles of claim 1, further comprising: the pipe wall of the pipeline adapter is provided with a mounting hole in a penetrating mode, the outer wall of the pipeline adapter is located wrench hinging seats are arranged on two sides of the mounting hole, one end of a compression wrench is hinged to the wrench hinging seat, a compression bulge is arranged at one end of the compression wrench and extends into the mounting hole, and the compression wrench is matched with a compression groove to realize compression connection or disconnection.
3. The quick-connect pneumatic shut-off valve for special-purpose vehicles of claim 1, further comprising: a valve rod upper seal is arranged on a contact surface between the control valve rod and the middle valve body; and a lower valve rod seal is arranged on a contact surface between the control valve rod and the lower valve body.
4. The quick-connect pneumatic shut-off valve for special-purpose vehicles of claim 1, further comprising: and a channel sealing gasket for sealing the fluid channel is arranged at the bottom end of the control valve rod.
5. The quick-connect pneumatic shut-off valve for special-purpose vehicles of claim 1, further comprising: a valve body gasket is arranged on the contact surface between the lower valve body and the middle valve body; and a valve cover gasket is arranged on the contact surface between the upper valve cover and the middle valve body.
6. The special-purpose vehicle quick-connectable pneumatic shut-off valve of any one of claims 1 to 5, characterized in that: and a piston seal is arranged on the contact surface of the control piston and the inner wall of the middle valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020380449.6U CN211738045U (en) | 2020-03-23 | 2020-03-23 | But special-purpose vehicle high-speed joint's pneumatic trip valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020380449.6U CN211738045U (en) | 2020-03-23 | 2020-03-23 | But special-purpose vehicle high-speed joint's pneumatic trip valve |
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| Publication Number | Publication Date |
|---|---|
| CN211738045U true CN211738045U (en) | 2020-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020380449.6U Active CN211738045U (en) | 2020-03-23 | 2020-03-23 | But special-purpose vehicle high-speed joint's pneumatic trip valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211738045U (en) |
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2020
- 2020-03-23 CN CN202020380449.6U patent/CN211738045U/en active Active
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