CN212297124U

CN212297124U - Damping system of pneumatic valve

Info

Publication number: CN212297124U
Application number: CN202021246684.0U
Authority: CN
Inventors: 庞云玲; 杨恩哲; 张魁榜; 马现刚; 陈林
Original assignee: Chuanbei Vacuum Technology Beijing Co ltd
Current assignee: Chuanbei Vacuum Technology Beijing Co ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-01-05
Anticipated expiration: 2030-06-29

Abstract

The utility model provides a pneumatic valve damping shock mitigation system belongs to gas circuit control technical field, include: the cylinder is internally provided with a piston and a pneumatic rod connected with the piston; the valve is internally provided with a driving frame connected with a pneumatic rod of the air cylinder and a valve plate connected with the driving frame; a cushion circuit in communication with the at least one vent port of the cylinder, the cushion circuit comprising: the device comprises a first adjusting branch and a second adjusting branch which are arranged in parallel, wherein a first one-way speed regulating valve is arranged on the first adjusting branch, and an electromagnetic valve is arranged on the second adjusting branch; the utility model discloses a pneumatic valve damping shock mitigation system, cylinder are when exhausting, adjust the branch road through the second, and gas can be very fast to pass through, can only pass through with slower speed through first regulation branch road to when the piston removes to before will putting in place, the accessible makes the exhaust pass through from first regulation branch road, slows down carminative speed, thereby reduces the noise of pneumatic valve when closing.

Description

Damping system of pneumatic valve

Technical Field

The utility model relates to a gas circuit control technical field, concretely relates to pneumatic valve damping shock mitigation system.

Background

The pneumatic valve has the advantages of simple structure, easy acquisition of air source, higher opening and closing speed, direct application to occasions with explosion-proof requirements and the like, so that the pneumatic valve has a firm position in the field of vacuum valves.

However, since the pneumatic valve is driven by gas, which has compressibility, the driving speed is not easy to control, and the pneumatic valve has large vibration when being closed, and thus, the pneumatic valve needs a good damping device.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the big, the big defect of noise of vibration of pneumatic valve among the prior art to a pneumatic valve damping shock mitigation system is provided.

In order to solve the technical problem, the utility model provides a pneumatic valve damping shock mitigation system, include:

the cylinder is internally provided with a piston and a pneumatic rod connected with the piston, and one end of the pneumatic rod extends outwards;

the valve is internally provided with a driving frame connected with a pneumatic rod of the air cylinder and a valve plate connected with the driving frame;

a cushion circuit in communication with the at least one vent port of the cylinder, the cushion circuit comprising: the first adjusting branch and the second adjusting branch are connected in parallel, a first one-way speed regulating valve is arranged on the first adjusting branch, and an electromagnetic valve is arranged on the second adjusting branch.

Preferably, the method further comprises the following steps:

one end of the first main air path is communicated with one air vent of the air cylinder, the other end of the first main air path is suitable for being communicated with an air source, a second one-way speed regulating valve is arranged on the first main air path, and the speed regulated by the second one-way speed regulating valve is higher than that regulated by the first one-way speed regulating valve;

one end of the second main air path is communicated with the other air port of the air cylinder, the other end of the second main air path is suitable for being communicated with an air source, a third one-way speed regulating valve is arranged on the second main air path, and the regulating speed of the third one-way speed regulating valve is greater than that of the first one-way speed regulating valve;

the buffer circuit is suitable for being communicated with at least one of the first main air path and the second main air path through a two-position five-way electromagnetic valve.

Preferably, when the pneumatic rod of the air cylinder drives forwards, one of the two air ports of the air cylinder is an air inlet, and the other air port of the air cylinder is an air outlet;

the first main air path is communicated with the air inlet, the second main air path is communicated with the air outlet, and the buffer loop is suitable for being at least communicated with the second main air path through a two-position five-way electromagnetic valve.

Preferably, a magnetic switch is arranged on the cylinder at a position close to the air outlet, the magnetic switch is connected with a controller, and the controller is electrically connected with the electromagnetic valve.

Preferably, the valve comprises:

a housing disposed opposite the cylinder;

the driving frame is arranged in the shell in a sliding mode, is connected with a pneumatic rod of the air cylinder, and is provided with a first buffering structure;

the valve plate is arranged in the shell in a sliding mode, is rotatably connected with the driving frame through a connecting rod, and is provided with a second buffer structure between the shell.

Preferably, the first buffer structure includes:

the driving frame in-place device is arranged on the driving frame;

and the limiting buffer block is arranged on the shell and is provided with a buffer body facing the drive frame in-place device.

Preferably, the second buffer structure includes:

the valve plate is arranged on the valve plate and provided with a position arriving block and a position arriving wheel which are arranged in parallel towards the shell, and a buffer pad is arranged on the position arriving block in a protruding mode.

Preferably, the positioning blocks are provided with two groups which are respectively arranged at two sides of the positioning wheel.

Preferably, the buffer pad has at least five layers, and the rubber material, the polyurethane material and the polytetrafluoroethylene material are respectively adopted.

Preferably, the cushion includes:

the first cushion is positioned at the bottommost layer and is made of at least two layers of rubber materials;

the second buffer cushion is positioned on the upper layer of the first buffer cushion and is made of at least two layers of polyurethane materials;

and the third cushion pad is positioned on the upper layer of the second cushion pad and is made of a single-layer polytetrafluoroethylene material.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a pneumatic valve damping shock mitigation system, the intercommunication has buffer circuit on the blow vent of cylinder, the cylinder is when exhausting, need pass through this buffer circuit, be equipped with two parallelly connected branches on buffer circuit, adjust the branch road through the second, gas can very fast speed pass through, after the branch road is adjusted to the second of closing, gas can only pass through with slower speed through first regulation branch road, thereby before the piston removes to will target in place soon, the accessible makes the exhaust pass through from first regulation branch road, slow down carminative speed, thereby reduce the noise of pneumatic valve when closing, realize that the nothing of valve strikes and target in place.

2. The utility model provides a pneumatic valve damping shock mitigation system, the switching of first regulation branch road and second regulation branch road is gone on through the solenoid valve, has the control of being convenient for and the fast advantage of switching speed.

3. The utility model provides a pneumatic valve damping shock mitigation system, has first buffer structure and second buffer structure on the valve, when the valve plate targets in place, the piece of arriving on the valve plate contacts with casing, through the blotter on the piece of arriving, realize that the valve plate targets in place steadily; when the driving frame is in place, the driving frame in-place device is in contact with the limiting buffer block, and the buffer is realized through the buffer body on the limiting buffer block so as to achieve the whole-process buffer control of the valve.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic front view of an embodiment of a damping system of a pneumatic valve according to the present invention.

Fig. 2 is a sectional view of the spacing bumper shown in fig. 1.

FIG. 3 is a front view of the valve plate to seat shown in FIG. 1.

FIG. 4 is a cross-sectional view taken along line A-A of the valve plate to seat shown in FIG. 3.

Description of reference numerals:

1. a cylinder; 2. a valve; 3. a first main gas path; 4. a second main gas path; 5. a housing; 6. a piston; 7. a pneumatic rod; 8. a cushion valve; 9. a gas source; 10. a second one-way speed regulating valve; 11. a third one-way speed regulating valve; 12. a two-position five-way solenoid valve; 13. a driving frame; 14. a valve plate; 15. a first one-way speed regulating valve; 16. an electromagnetic valve; 17. a muffler; 18. a magnetic switch; 19. a first buffer structure; 20. a second buffer structure; 21. a limiting buffer block; 22. a buffer body; 23. an arrival wheel; 24. a valve plate seat; 25. an arrival block; 26. a first cushion pad; 27. a second cushion pad; 28. a third cushion pad.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

The present embodiment provides a specific embodiment of a damping system for a pneumatic valve, as shown in fig. 1, comprising: the air cylinder comprises an air cylinder 1, a valve 2, a first main air path 3, a second main air path 4 and a buffer loop. The cylinder 1 has a piston 6 and a pneumatic rod 7 connected to the piston 6, and one end of the pneumatic rod 7 protrudes toward the valve 2. The cylinder 1 adopts a speed regulation cylinder 1 with two ends provided with buffer valves 8, and the running speed of the piston 6 can be regulated within a proper range through the buffer valves 8 at the two ends. Be equipped with the air vent that is used for communicateing air supply 9 respectively at the both ends of cylinder 1, when pneumatic rod 7 drives forward, two one in the air vent is the air inlet, another is the gas outlet, wherein, the air inlet is with first main gas circuit 3 intercommunication, the gas outlet is with the main gas circuit 4 intercommunication of second. The first main air path 3 and the second main air path 4 are both provided with one-way speed regulating valves, wherein the first main air path 3 is provided with a second one-way speed regulating valve 10, the second main air path 4 is provided with a third one-way speed regulating valve 11, and the two one-way speed regulating valves are respectively used for regulating the exhaust speed of the first main air path 3 and the second main air path 4.

As shown in fig. 1, the inlet ends of the first main air path 3 and the second main air path 4, which are far away from the cylinder, are adapted to be communicated with an air source 9 and a buffer circuit through a two-position five-way solenoid valve 12, respectively. When the first main gas path 3 is communicated with the gas source 9, the second main gas path 4 is communicated with the buffer loop; when the second main air path 4 is communicated with the air source 9, the first main air path 3 is communicated with the outside. In addition, as an alternative embodiment, when the second main air passage 4 is communicated with the air source 9, the first main air passage 3 may also be communicated with the buffer circuit.

As shown in fig. 1, the buffer circuit includes: the device comprises a first adjusting branch and a second adjusting branch which are connected in parallel, wherein a first one-way speed regulating valve 15 is arranged on the first adjusting branch, and an electromagnetic valve 16 is arranged on the second adjusting branch. The first one-way speed regulating valve 15 is used for regulating the exhaust speed on the first regulating branch, and the speed regulated by the first one-way speed regulating valve 15 is further reduced and regulated on the basis of the speed regulated by the second one-way speed regulating valve 10 and the third one-way speed regulating valve 11. The speed regulation of the first one-way speed regulation valve 15, the second one-way speed regulation valve 10 and the third one-way speed regulation valve 11 is adjustable. The solenoid valve 16 is used to cut off or conduct the second regulating branch. In addition, the outlets of the first adjusting branch and the second adjusting branch are respectively provided with a silencer 17.

As shown in fig. 1, a magnetic switch 18 is disposed on the cylinder 1 at a position close to the air outlet, the magnetic switch 18 is connected to a controller, and the controller is electrically connected to the electromagnetic valve 16. That is, when the piston 6 in the cylinder 1 moves downward to be close to the magnetic switch 18, the controller receives a signal, and at this time, the controller controls the electromagnetic valve 16 to be closed, so that the exhaust gas of the cylinder 1 is switched from the second adjusting branch to the first adjusting branch, thereby increasing the exhaust gas pressure of the cylinder 1 and buffering the piston 6 in the cylinder 1.

As shown in fig. 1, the valve 2 includes: the pneumatic valve comprises a shell 5, a driving frame 13 and a valve plate 14, wherein the shell 5 is arranged opposite to the cylinder 1, the driving frame 13 is arranged inside the shell 5 in a sliding mode, the driving frame 13 is connected with a pneumatic rod 7 of the cylinder 1, and a first buffering structure 19 is arranged between the driving frame 13 and the shell 5. The first buffer structure 19 includes: the device comprises a driving frame in-place device and a limiting buffer block 21, wherein the driving frame in-place device is elastically arranged on the driving frame 13, and the limiting buffer block 21 is arranged on the shell 5. In addition, as shown in fig. 2, a buffer body 22 is provided on the limit buffer block 21 in a direction toward the drive rack positioning device.

As shown in fig. 1, the valve plate 14 is slidably disposed in the housing 5, the valve plate 14 is rotatably connected to the driving frame 13 through a connecting rod, and a second buffer structure 20 is provided between the valve plate 14 and the housing 5. The second buffer structure 20 includes: a valve plate-to-seat 24 provided on the valve plate 14, as shown in fig. 3, the valve plate-to-seat 24 comprising: the arriving wheel 23 and the arriving blocks 25 arranged at both sides of the arriving wheel 23, the arriving wheel 23 is rotatably arranged on the valve plate arriving seat 24, and a mounting space of the arriving wheel 23 is formed between the two arriving blocks 25.

As shown in fig. 4, the positioning block 25 has a cushion facing the housing, and the cushion has a first cushion 26, a second cushion 27 and a third cushion 28 arranged in this order. The first cushion pad 26 is positioned at the bottommost layer, and the first cushion pad 26 is made of a double-layer rubber material; the second buffer cushion 27 is positioned on the upper layer of the first buffer cushion 26, and the second buffer cushion 27 is made of polyurethane material in a double-layer arrangement; the third buffer cushion 28 is located on the upper layer of the second buffer cushion 27, and the third buffer cushion 28 is made of polytetrafluoroethylene material arranged in a single layer.

Application method

As shown in fig. 1, when the valve plate 14 is driven by the cylinder 1 to move in the downward direction shown in fig. 1, first, the two-position five-way solenoid valve 12 is operated to communicate the first main air passage 3 with the air supply 9 and the second main air passage 4 with the cushion circuit.

An air source 9 is used for introducing air to the upper part of a piston 6 in a cylinder 1 through a first main air path 3, the piston 6 drives a pneumatic rod 7 to move downwards, and the pneumatic rod 7 drives a driving frame 13 and a valve plate 14 of a valve 2 to move downwards; meanwhile, the gas in the cavity below the piston 6 in the cylinder 1 is discharged towards the second main gas path 4, and on the second main gas path 4, the exhaust gas in the cylinder 1 firstly passes through the third one-way speed regulating valve 11 for speed regulation, then sequentially passes through the two-position five-way electromagnetic valve 12 and the electromagnetic valve 16, and is discharged to the outside from the second regulating branch through the silencer 17.

When the piston 6 of the cylinder 1 moves to the magnetic switch 18, the controller receives a signal of the magnetic switch 18, and the controller sends a control signal to the electromagnetic valve 16 to close the electromagnetic valve 16. At this time, the exhaust gas in the cylinder 1 cannot be discharged from the second regulation branch but can be discharged only from the first regulation branch, the first one-way speed regulation valve 15 is provided in the first regulation branch, and the exhaust gas is further speed-regulated by the first one-way speed regulation valve 15, so that the exhaust gas speed of the cylinder 1 can be further decreased.

After the driving frame 13 moves in place, the first buffering structure 19 on the shell 5 acts, specifically, after the driving frame in-place device contacts the limiting buffering block 21, part of aerodynamic force is offset by the driving frame in-place device, and the driving frame 13 is in place without impact.

In the valve plate 14 of this embodiment, just before the driving frame 13 moves downward, the valve plate 14 needs to move in a vertical direction, that is, the valve plate 14 moves in a direction perpendicular to the moving direction of the driving frame 13. In the process, the second buffer structure 20 on the valve plate 14 acts, specifically, the arriving block 25 on the valve plate 14 is firstly contacted with the housing 5, the valve plate 14 is stably arrived through the buffer pad on the arriving block 25, then the arriving wheel 23 is contacted with the housing, and then the valve plate 14 is driven by the driving frame 13 through the connecting rod to move towards the vertical direction.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. Pneumatic valve damping shock mitigation system, characterized in that includes:

the air cylinder (1) is internally provided with a piston (6) and a pneumatic rod (7) connected with the piston (6), and one end of the pneumatic rod (7) extends outwards;

a valve (2) having a drive frame (13) connected to a pneumatic rod (7) of the cylinder (1) and a valve plate (14) connected to the drive frame (13);

a damping circuit in communication with at least one vent of the cylinder (1), the damping circuit comprising: the device comprises a first adjusting branch and a second adjusting branch which are connected in parallel, wherein a first one-way speed regulating valve (15) is arranged on the first adjusting branch, and an electromagnetic valve (16) is arranged on the second adjusting branch.

2. A pneumatic valve damping system as set forth in claim 1 and further comprising:

one end of the first main air path (3) is communicated with one air vent of the air cylinder (1), the other end of the first main air path is suitable for being communicated with an air source (9), a second one-way speed regulating valve (10) is arranged on the first main air path (3), and the speed of regulating the second one-way speed regulating valve (10) is greater than the speed of regulating the first one-way speed regulating valve (15);

one end of the second main air path (4) is communicated with the other air port of the air cylinder (1), the other end of the second main air path is suitable for being communicated with an air source (9), a third one-way speed regulating valve (11) is arranged on the second main air path (4), and the speed of regulation of the third one-way speed regulating valve (11) is greater than that of regulation of the first one-way speed regulating valve (15);

the buffer circuit is suitable for being communicated with at least one of the first main air path (3) and the second main air path (4) through a two-position five-way electromagnetic valve (12).

3. A pneumatic valve damping and shock absorbing system according to claim 2, wherein when the pneumatic rod (7) of the cylinder (1) is driven forward, one of the two air ports of the cylinder (1) is an air inlet, and the other one is an air outlet;

the first main air path (3) is communicated with the air inlet, the second main air path (4) is communicated with the air outlet, and the buffer loop is suitable for being at least communicated with the second main air path (4) through a two-position five-way electromagnetic valve (12).

4. A pneumatic valve damping and shock absorbing system according to claim 3, wherein a magnetic switch (18) is provided on the cylinder (1) at a position close to the air outlet, the magnetic switch (18) being connected to a controller, the controller being electrically connected to the solenoid valve (16).

5. A pneumatic valve damping shock absorbing system according to any one of claims 1-4, characterized in that the valve (2) comprises:

a housing (5) disposed opposite to the cylinder (1);

the driving frame (13) is arranged in the shell (5) in a sliding mode, is connected with a pneumatic rod (7) of the air cylinder (1), and is provided with a first buffering structure (19) between the driving frame and the shell (5);

the valve plate (14) is arranged in the shell (5) in a sliding mode, is rotatably connected with the driving frame (13) through a connecting rod, and is provided with a second buffer structure (20) between the valve plate and the shell (5).

6. A pneumatic valve damping shock absorbing system according to claim 5, wherein the first cushioning structure (19) comprises:

the driving frame in-place device is arranged on the driving frame (13);

and the limiting buffer block (21) is arranged on the shell (5) and is provided with a buffer body (22) facing the drive frame in-place device.

7. A pneumatic valve damping shock absorbing system according to claim 5, wherein said second damping structure (20) comprises:

the valve plate is arranged on the valve plate (14), the valve plate is provided with a valve plate arrival seat (24) and a valve plate arrival wheel (23), the valve plate arrival seat faces the shell (5) and is provided with a arrival block (25) and a arrival wheel (23) which are arranged in parallel, and a buffer pad is arranged on the arrival block (25) in a protruding mode.

8. A pneumatic valve damping system according to claim 7, wherein the seating blocks (25) have two sets, one set on each side of the seating wheel (23).

9. A pneumatic valve damping system as set forth in claim 7 or 8 wherein said cushion has at least five layers of rubber material, polyurethane material and teflon material respectively.

10. A pneumatically actuated valve damping shock system as set forth in claim 9 wherein said cushion includes:

the first cushion pad (26) is positioned at the bottommost layer and is made of at least two layers of rubber materials;

the second buffer cushion (27) is positioned on the upper layer of the first buffer cushion (26) and is made of polyurethane materials with at least two layers;

and the third buffer cushion (28) is positioned on the upper layer of the second buffer cushion (27) and is made of a single-layer arranged polytetrafluoroethylene material.