CN101782151B - Manual control valve - Google Patents
Manual control valve Download PDFInfo
- Publication number
- CN101782151B CN101782151B CN2009100455985A CN200910045598A CN101782151B CN 101782151 B CN101782151 B CN 101782151B CN 2009100455985 A CN2009100455985 A CN 2009100455985A CN 200910045598 A CN200910045598 A CN 200910045598A CN 101782151 B CN101782151 B CN 101782151B
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- valve
- cavity
- radial direction
- manual control
- valve rod
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- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 35
- 238000010586 diagram Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
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Abstract
The invention discloses a manual control valve. The manual control valve comprises a valve cavity, a piston, a valve rod, and a control handle, wherein valve cavity is in communication with an input pipe and an output pipe of the manual control valve; the piston is positioned in the valve cavity and can block or maintain the communication; one end of the valve rod is extended into the valve cavity and is connected with the piston; the control handle is in rotary connection with the other end of the valve rod through threads and can drive the valve rod and the piston to move through threads in a rotating mode so as to block or maintain the communication; a cavity extending along the radial direction of the valve rod is arranged in the control handle; a bolt which can move in the radial direction of the valve rod is accommodated in the cavity; and the other end of the valve rod is provided with a hole for the bolt to insert into or draw from along the radial direction of the valve rod when the piston blocks or maintains the communication. The manual control valve of the invention can effectively prevent a misoperation of the manual control valve, and improve the accuracy and the security of an operation.
Description
Technical Field
The invention relates to the field of control valves, in particular to a manual control valve.
Background
In a special gas supply system, a plurality of gases are generally required to be transmitted, and the transmission control of the gases is centralized in the same control box, so that a plurality of manual control valves 101 to 104 with the same structure are generally arranged in the valve control box shown in fig. 1, and the transmission control of the corresponding gases is realized by controlling the opening or closing of the manual control valves by an operator.
Fig. 2 is a schematic view showing the structure of a manual control valve of the prior art. As shown in fig. 2, the manual control valve includes a control handle 201 and a valve body 202, the control handle 201 is rotatably connected to one end of a valve stem 203 of the valve body 202 through a screw thread, that is, the control handle 201 has a threaded hole, and one end of the valve stem 203 rotatably connected to the control handle 201 has a stud. The lower part of the valve body 202 has a valve chamber 204, and the valve chamber 204 communicates with an inlet pipe 206 and an outlet pipe 207 which communicate with the outside of the manual control valve. And a piston 205 is also arranged in the valve cavity 204, and the piston 205 is fixed at the other end of the valve rod 203, which faces away from the control handle 201.
When the control handle 201 is rotated to a preset closing position, the valve rod 203 and the piston 205 are driven by the threads to move downwards along the vertical direction until the piston 205 blocks the communication between the input pipe 206 and the output pipe 207 and the valve cavity 204 from the inside of the valve cavity 204, the output pipe 207 can be closed, at this time, the gas entering the input pipe 206 cannot be output through the output pipe 207, and the manual control valve is in a closing state.
When the control handle 201 is rotated to a preset opening position and the valve rod 203 and the piston 205 are driven to move upwards along the vertical direction until the piston 205 is far away from the opening of the valve cavity 204 communicated with the input pipe 206 and the output pipe 207, the valve cavity 204 is enabled to be communicated with the input pipe 206 and the output pipe 207, the opening of the output pipe 207 can be realized, gas enters the valve cavity 204 from the input pipe 206 and is output from the output pipe 207, and at the moment, the manual control valve is in a conducting state.
In the prior art, an operator controls the delivery or closing of the corresponding gas by rotating a control handle of a manual control valve to an open position or a closed position. However, as can be seen from fig. 1, a plurality of manual control valves of the same type are usually arranged in a valve control box, and misoperation is easily caused during operation. For example, when it is desired to open valve 103, valve 102 may be opened by mistake, which may interfere with proper use or even create a hazard.
Disclosure of Invention
In order to solve the problems, the invention provides a manual control valve which can prevent misoperation of the manual control valve and improve the accuracy and safety of operation.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a manual control valve comprising: the valve cavity is communicated with the input pipe and the output pipe of the manual control valve; a piston located within the valve chamber and capable of blocking or maintaining the communication; one end of the valve rod extends into the valve cavity and is connected with the piston; the control handle is rotationally connected with the other end of the valve rod through threads and can drive the valve rod and the piston to move through the threads in a rotating mode so as to realize the blockage or the maintenance of the communication; wherein,
the control handle is internally provided with a cavity extending along the radial direction of the valve rod, and a bolt which can move in the radial direction of the valve rod is arranged in the cavity;
the other end of the valve stem has a hole through which the plug can be inserted and pulled out in a radial direction of the valve stem while the piston blocks and maintains the communication.
Preferably, the manual control valve further comprises: the gas pipe communicated with the cavity from the outer side of the control handle and the control valve used for controlling the gas pipe to be communicated and closed, when the gas pipe is communicated, the gas input through the gas pipe can push the bolt to move inwards in the cavity along the radial direction of the valve rod until the bolt is inserted into the hole towards one end of the valve rod.
Preferably, the control valve is a solenoid valve.
Preferably, the end of the plug facing away from the valve stem is connected to the inner wall of the cavity communicating gas line by an elastic member capable of generating a pulling force in a direction facing away from the valve stem when the plug is inserted into the hole.
Preferably, the sum of the original length of the elastic element and the length of the bolt is less than or equal to the length of the cavity in the radial direction of the valve rod.
Preferably, the sum of the stretched length of the elastic element and the length of the plug is greater than the length of the cavity in the radial direction of the valve stem, and the stretched length of the elastic element is less than the length of the cavity in the radial direction of the valve stem.
Preferably, the elastic element is a spring.
Preferably, the difference in the angle of rotation of the control handle relative to the valve stem when the piston blocks and maintains the communication is 180,
the hole penetrates through the other end of the valve rod in the radial direction of the valve rod, one end of the hole can be used for inserting and pulling out the bolt from two ends of the through hole along the radial direction of the valve rod when the piston blocks the communication, and the other end of the hole can be used for inserting and pulling out the bolt from two ends of the through hole along the radial direction of the valve rod when the piston keeps the communication.
According to the technical scheme, the control handle of the manual control valve is internally provided with a cavity extending along the radial direction of the valve rod, and a bolt capable of moving in the radial direction of the valve rod is arranged in the cavity; and a valve rod with one end fixedly connected with the piston and the other end rotatably connected with the control handle through threads, and is provided with a hole for inserting the bolt along the radial direction of the valve rod when the piston blocks the communication of the valve cavity with the input pipe and the output pipe and for pulling out the bolt along the radial direction of the valve rod when the valve cavity held by the piston is communicated with the input pipe and the output pipe. Therefore, if the bolt is inserted into the hole at the other end of the valve rod, the control handle cannot rotate relative to the valve rod, so that the valve rod and the piston cannot be driven to move through threads, misoperation of the manual control valve can be avoided, and the accuracy and the safety of operation are improved.
Drawings
Fig. 1 is a schematic view of a prior art valve control box.
Fig. 2 is a schematic diagram of a prior art manual control valve.
Fig. 3 is a schematic structural view of a manual control valve according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of fig. 3 with part I in a first state.
Fig. 5 is a schematic view of part I of fig. 3 in a second state.
Fig. 6 is a schematic diagram of part I of fig. 3 in a third state.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples.
Fig. 3 is a schematic structural view of a manual control valve according to an embodiment of the present invention. As shown in fig. 3, the manual control valve of the present invention includes a control handle 301 and a valve body 302, and the control handle 301 is rotatably connected to one end of a valve stem 303 of the valve body 302 by a screw, similar to the manual control valve of the prior art. The lower part of the valve body 302 has a valve chamber 304, which valve chamber 304 can communicate with an inlet pipe 306 and an outlet pipe 307 communicating with the outside of the manual control valve. And a piston 305 is also arranged in the valve cavity 304, and the piston 305 is fixed at the other end of the valve rod 303, which is opposite to the control handle 301.
When the control handle 301 is rotated to a preset closing position, and the valve rod 303 and the piston 305 are driven by the screw thread to move downwards along the vertical direction until the piston 305 blocks the communication between the input pipe 306 and the output pipe 307 and the valve cavity 304 in the valve cavity 304, the output pipe 307 can be closed, at this time, the gas entering the input pipe 306 cannot be output through the output pipe 307, and the manual control valve is in a closing state.
When the control handle 301 is rotated to a preset opening position and drives the valve rod 303 and the piston 305 to move upward in the vertical direction until the piston 305 is far away from the opening of the valve cavity 304 communicated with the input pipe 306 and the output pipe 307, the valve cavity 304 is restored to a communication state with the input pipe 306 and the output pipe 307, and then the opening of the output pipe 307 can be realized, gas enters the valve cavity 304 from the input pipe 306 and is output from the output pipe 307, and at this time, the manual control valve is in a communication state.
Unlike the manual control valve in the prior art, the control handle 301 of the manual control valve of the present invention has a cavity 311 extending in the radial direction of the valve rod 303, and a locking pin 308 movable in the radial direction of the valve rod 303 is disposed in the cavity 311; the cavity 311 is arranged along the radial direction of the valve rod 303 and faces one end of the valve rod 303, an opening is formed in a threaded hole in which the control handle 301 is rotatably connected with the valve rod 303, namely the cavity is communicated with the threaded hole, and the locking bolt 308 can extend out of the cavity 311 through the opening and extend into the threaded hole;
the end of the valve stem 303 connected to the control handle 301 has a hole 313 through which the locking pin 308 can be inserted and withdrawn in the radial direction of the valve stem 303 while blocking and maintaining the communication of the valve chamber 304 with the inlet pipe 306 and the outlet pipe 307.
Thus, the locking pin 308 can be moved in the cavity 311 in the radial direction of the valve stem 303 by an external force, for example, an operator can push the locking pin 308 inward in the radial direction of the valve stem 303 or pull the locking pin 308 outward in the radial direction of the valve stem 303 to achieve insertion into or extraction from the hole 313.
In this embodiment, the locking bolt 308 can be pushed to be inserted into the hole 313 by using gas, so the manual control valve of the present invention further comprises a gas line 309 and a control valve 310 for controlling the gas line 309 to be turned on and off, wherein the control valve 310 can be a manual valve, a solenoid valve, a pneumatic valve, or the like, the gas line 309 is communicated with the cavity 311 from the outside of the control handle 301, and the gas input through the gas line 309 can push the locking bolt 308 in the cavity 311 to move inward along the radial direction of the valve stem 303 until the locking bolt 308 is inserted into the hole 313.
In this embodiment, the elastic element 312, such as a spring or a leaf spring, which can return to the original state, can also be used to pull the locking bolt 208 out of the hole 313. Specifically, an elastic member 312, such as a spring or a leaf spring, capable of returning to an original state is connected to one end of the locking bolt 308, which is opposite to the valve rod 303, and one end of the elastic member 312 is connected to the locking bolt 308, and the other end is fixed to an inner wall of the control handle 301, which is in communication with the gas line 309.
In this way, the resilient element 312 pulls the locking bolt 308 outwards in the cavity 311 in the radial direction of the valve stem 303 when the locking bolt 308 is inserted into the hole 313 until the locking bolt 308 is pulled out of the hole 313. The sum of the original length of the elastic element 312 and the length of the locking bolt 308 is less than or equal to the length of the cavity 311 in the radial direction of the valve rod 303, that is, when no gas is introduced into the cavity 311, the locking bolt 308 is completely accommodated in the cavity 311.
In this embodiment, the holes 313 may be disposed in various ways.
For example, if the difference in the rotational angle of the control handle 301 with respect to the valve stem 303 is 180 ° when the piston blocks and maintains the communication, a hole 313 penetrates the other end of the valve stem 303 in the radial direction of the valve stem 303, and one end of the hole 313 allows the locking pin 308 to be inserted and pulled out in the radial direction of the valve stem 303 when the piston 305 blocks the communication of the valve chamber 304 with the inlet pipe 306 and the outlet pipe 307, and the other end of the hole 313 allows the locking pin 308 to be inserted and pulled out in the radial direction of the valve stem 303 when the piston 305 maintains the communication of the valve chamber 304 with the inlet pipe 306 and the outlet pipe 307.
Of course, the manual control valve of the present invention is not limited to this case, for example, when the piston 305 blocks and maintains the communication between the valve chamber 304 and the inlet pipe 306 and the outlet pipe 307, and the control handle 301 is rotated at an angle of 90 ° with respect to the valve stem 303, the valve stem 303 has two holes whose axes are orthogonal to each other; alternatively, when the piston 305 blocks and maintains the communication between the valve chamber 304 and the inlet pipe 306 and the outlet pipe 307, and when the control handle 301 needs to rotate for a plurality of turns relative to the valve stem 303, that is, when the control handle 301 rotates for an angle greater than 360 ° relative to the valve stem 303, the valve stem 303 has two holes whose axes are straight and non-parallel.
Fig. 4 is a schematic diagram of fig. 3 with part I in a first state. As shown in fig. 4, since no gas is introduced into the cavity 311, the elastic member 312 is in an unstretched state, and the locking pin 308 is completely accommodated in the cavity 311. At this time, the control handle 301 is unlocked from the valve stem 303, and the control handle 301 can be rotated with respect to the valve stem 303.
To prevent the current state of the manual control valve from being changed due to a malfunction, the current state of the manual control valve can be locked, as shown in fig. 3, the gas line 309 is conducted through the control valve 310, and the gas in the gas line 309 is introduced into the cavity 311, so that the locking bolt 308 is in the second state. Fig. 5 is a schematic view of part I of fig. 3 in a second state. As shown in fig. 5, when gas is introduced into the cavity 311, the locking bolt 308 moves inward in the radial direction of the valve rod 303 under the pushing of the gas, at this time, the sum of the stretched length of the elastic element 312 and the length of the locking bolt 308 is greater than the length of the cavity 311 in the radial direction of the valve rod 303, and the stretched length of the elastic element 312 is less than the length of the cavity 311 in the radial direction of the valve rod 303, that is, the end of the locking bolt 308 facing away from the elastic element 312 is inserted into the through hole 313. At this time, since one end of the locking bolt 308 is received in the through hole 313 and the other end is received in the cavity 311, the control handle 301 and the valve rod 303 are locked, the control handle 301 cannot rotate relative to the valve rod 303, and at this time, the control handle 301 cannot be rotated, so that the current state of the manual control valve is not changed due to an erroneous operation.
When it is necessary to change the current state of the manual control valve, it is necessary to first unlock the current state, as shown in fig. 3, the gas line 309 is closed by the control valve 310, the gas in the gas line 309 cannot flow into the cavity 311, and the locking bolt 308 is in the third state. Fig. 6 is a schematic diagram of part I of fig. 3 in a third state. As shown in fig. 6, since the gas in the gas line 309 cannot pass into the cavity 311, the pushing force of the gas on the locking bolt 308 is eliminated, and at this time, the locking bolt 308 moves outward in the radial direction of the valve rod 303 under the tensile force of the elastic element 312 until the elastic element 312 recovers the original length, and the locking bolt 308 returns to the first state shown in fig. 4, at this time, the locking bolt 308 is completely accommodated in the cavity 311, the locking state between the control handle 301 and the valve rod 303 is released, and the control handle 301 can be rotated relative to the valve rod 303, and the operator can change the state of the manual control valve by rotating the control handle 301.
In the above embodiment, the control handle of the manual control valve has a cavity extending in the radial direction of the valve stem, and the cavity has a plug movable in the radial direction of the valve stem; and a valve rod with one end fixedly connected with the piston and the other end rotatably connected with the control handle through threads, and is provided with a hole for inserting the bolt along the radial direction of the valve rod when the piston blocks the communication of the valve cavity with the input pipe and the output pipe and for pulling out the bolt along the radial direction of the valve rod when the valve cavity held by the piston is communicated with the input pipe and the output pipe. Therefore, if the bolt is inserted into the hole at the other end of the valve rod, the control handle cannot rotate relative to the valve rod, so that the valve rod and the piston cannot be driven to move through threads, the current state of the manual control valve can be locked, the control action for changing the current state of the manual control valve is changed into two steps of unlocking and rotating the control handle, the occurrence probability of misoperation is greatly reduced, the misoperation of the manual control valve can be effectively prevented, and the accuracy and the safety of operation are improved.
Claims (8)
1. A manual control valve comprising:
the valve cavity is communicated with the input pipe and the output pipe of the manual control valve;
a piston located within the valve chamber and capable of blocking or maintaining the communication;
one end of the valve rod extends into the valve cavity and is connected with the piston;
the control handle is rotationally connected with the other end of the valve rod through threads and can drive the valve rod and the piston to move through the threads in a rotating mode so as to realize the blockage or the maintenance of the communication;
it is characterized in that the preparation method is characterized in that,
the control handle is internally provided with a cavity extending along the radial direction of the valve rod, and a bolt which can move in the radial direction of the valve rod is arranged in the cavity;
the other end of the valve stem has a hole through which the plug can be inserted and pulled out in a radial direction of the valve stem while the piston blocks and maintains the communication.
2. The manual control valve according to claim 1, further comprising: the gas pipe communicated with the cavity from the outer side of the control handle and the control valve used for controlling the gas pipe to be communicated and closed, when the gas pipe is communicated, the gas input through the gas pipe can push the bolt to move inwards in the cavity along the radial direction of the valve rod until the bolt is inserted into the hole towards one end of the valve rod.
3. The manual control valve according to claim 2, wherein the control valve is a solenoid valve.
4. The manual control valve according to claim 2, wherein an end of the plug facing away from the valve stem and an inner wall of a side of the cavity communicating with the gas line are connected by an elastic member capable of generating a pulling force in a direction facing away from the valve stem when the plug is inserted into the hole.
5. The manual control valve according to claim 4, wherein a sum of an original length of the elastic member and a length of the plug is equal to or less than a length of the cavity in a radial direction of the valve stem.
6. The manual control valve according to claim 5, wherein a sum of a length of the elastic member after being stretched and a length of the plug is larger than a length of the cavity in a radial direction of the valve stem, and the length of the elastic member after being stretched is smaller than the length of the cavity in the radial direction of the valve stem.
7. The manual control valve according to any one of claims 4 to 6, wherein the elastic element is a spring.
8. The manual control valve according to claim 1, wherein the difference in the rotation angle of the control handle with respect to the valve stem when the piston blocks and maintains the communication is 180 °,
the hole penetrates through the other end of the valve rod in the radial direction of the valve rod, one end of the hole can be used for inserting and pulling out the bolt in the radial direction of the valve rod when the piston blocks the communication, and the other end of the hole can be used for inserting and pulling out the bolt in the radial direction of the valve rod when the piston keeps the communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100455985A CN101782151B (en) | 2009-01-20 | 2009-01-20 | Manual control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100455985A CN101782151B (en) | 2009-01-20 | 2009-01-20 | Manual control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101782151A CN101782151A (en) | 2010-07-21 |
| CN101782151B true CN101782151B (en) | 2011-09-14 |
Family
ID=42522262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100455985A Expired - Fee Related CN101782151B (en) | 2009-01-20 | 2009-01-20 | Manual control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101782151B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091347A (en) * | 2017-06-22 | 2017-08-25 | 苏州诺纳可电子科技有限公司 | The slow pressure check-valves of one kind |
| CN110906011B (en) * | 2019-12-13 | 2024-06-14 | 鞍山电磁阀有限责任公司 | Electrohydraulic integrated control valve |
-
2009
- 2009-01-20 CN CN2009100455985A patent/CN101782151B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101782151A (en) | 2010-07-21 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Granted publication date: 20110914 Termination date: 20200120 |