CN209892843U - Dome valve quick exhaust device - Google Patents
Dome valve quick exhaust device Download PDFInfo
- Publication number
- CN209892843U CN209892843U CN201920569934.5U CN201920569934U CN209892843U CN 209892843 U CN209892843 U CN 209892843U CN 201920569934 U CN201920569934 U CN 201920569934U CN 209892843 U CN209892843 U CN 209892843U
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- valve
- dome
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- cylinder
- control valve
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- 238000007789 sealing Methods 0.000 claims abstract description 12
- 238000004891 communication Methods 0.000 claims description 4
- 238000013022 venting Methods 0.000 claims 1
- 239000012528 membrane Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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Abstract
The utility model discloses a dome valve rapid exhaust device, which comprises a cylinder, a control valve and a three-way valve; the cylinder is provided with a first pipeline and a second pipeline, the control valve is used for controlling the inflation and deflation of a sealing ring of the dome valve, and the cylinder is used for controlling the opening and closing of the control valve; the dome valve rapid exhaust device is also provided with a dome valve pipeline for controlling the valve core of the dome valve to act and an electromagnetic valve pipeline for connecting with an air source; the first pipe, the dome valve pipe, and the solenoid valve pipe are connected by the three-way valve. One end of dome valve pipeline, the one end of solenoid valve pipeline and the one end of first pipeline are passed through the three-way valve and are linked together, have thoroughly cancelled prior art's quick exhaust valve equipment, replace with the three-way valve to fundamentally stopped quick exhaust valve inner membrane gasket and broken the problem of gas leakage easily.
Description
Technical Field
The utility model relates to a dense phase pneumatic conveying field specifically relates to a quick exhaust apparatus of calotte valve.
Background
At present, in the dense-phase pneumatic ash conveying system of a power plant, a dome valve for blanking of a bin pump adopts a quick exhaust valve to exhaust, and in use, because the quick exhaust valve frequently acts, an inner membrane gasket of the dome valve is often damaged, so that air leakage of a control air source is caused, the dome valve cannot be normally opened and closed, and pneumatic ash conveying pressure alarm is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the problem that prior art exists, providing a dome valve quick exhaust device, having solved the problem of the easy rupture gas leakage of traditional dome valve's quick exhaust valve endomembrane gasket, also guaranteed the switch safety and stability performance of valve.
In order to achieve the above object, the present invention provides a dome valve rapid exhaust device, which comprises a cylinder, a control valve and a three-way valve; the cylinder is provided with a first pipeline and a second pipeline, the control valve is used for controlling the inflation and deflation of a sealing ring of the dome valve, and the cylinder is used for controlling the opening and closing of the control valve; the dome valve rapid exhaust device is also provided with a dome valve pipeline for controlling the valve core of the dome valve to act and an electromagnetic valve pipeline for connecting with an air source; the first pipe, the dome valve pipe, and the solenoid valve pipe are connected by the three-way valve.
Preferably, one end of the cylinder is provided with a connecting rod, the connecting rod is connected with the control valve, and the extension and contraction of the connecting rod are driven by the movement of a piston in the cylinder.
Preferably, the control valve comprises a valve cavity, a valve core with an open-close state is arranged in the valve cavity, the valve core divides the valve cavity into two chambers, one chamber is communicated with a first pipeline of the control valve, and the other chamber is communicated with the dome valve pipeline and is provided with a second pipeline of the control valve.
Preferably, the three-way valve is a T-shaped three-way valve.
Through the technical scheme: one end of dome valve pipeline, the one end of solenoid valve pipeline and the one end of first pipeline are passed through the three-way valve and are linked together, have thoroughly cancelled prior art's quick exhaust valve equipment, replace with the three-way valve to fundamentally stopped quick exhaust valve inner membrane gasket and broken the problem of gas leakage easily.
Drawings
FIG. 1 is a schematic structural view of a preferred embodiment of a dome valve quick exhaust of the present invention.
Description of the reference numerals
1-cylinder, 2-control valve, 3-three-way valve, 4-first pipeline, 5-second pipeline, 6-dome valve pipeline, 7-solenoid valve pipeline, 8-connecting rod, 9-piston, 10-valve core, 11-control valve first pipeline and 12-control valve second pipeline
Detailed Description
At present, in the opening and closing process of the dome valve during work, the action of a valve core and the action of a sealing ring are relatively delayed:
during the closing process of the dome valve, the sealing ring of the dome valve is in a completely relaxed (non-inflated) state, and a certain clearance exists between the valve core and the valve seat. The valve core rotates, some materials pass through the gap to enter the container along with the rotation of the valve core, and some materials stay at the gap. When the valve core rotates to the closed position, the sealing ring begins to inflate and tightly wraps particles in various shapes in the gap and is attached to the edge of the valve core, and the dome valve is completely closed.
During opening of the dome valve, the seal ring is first vented to a full relaxation. The original gap between the valve core and the valve seat is restored, and the valve core starts to rotate to the open position.
The action of case and sealing washer is controlled by reciprocating motion device (the utility model provides a cylinder), and the air inlet of cylinder, exhaust application quick exhaust valve realize usually, and this just causes quick exhaust valve's case inner diaphragm to be damaged easily, the utility model discloses replace quick exhaust valve with the three-way valve, thoroughly stopped quick exhaust valve inner diaphragm gasket and broken the problem of gas leakage easily.
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
As shown in fig. 1, the dome valve rapid exhaust apparatus of the present invention includes a cylinder 1, a control valve 2, and a three-way valve 3; the cylinder 1 is provided with a first pipeline 4 and a second pipeline 5, the control valve 2 is used for controlling the inflation and deflation of a sealing ring (not shown in the figure) of a dome valve (not shown in the figure), and the cylinder 1 is used for controlling the opening and closing of the control valve 2; the dome valve quick exhaust device is also provided with a dome valve pipeline 6 for controlling the action of a valve core (not shown in the figure) of the dome valve and an electromagnetic valve pipeline 7 for connecting with an air source; the first conduit 4, the dome valve conduit 6 and the solenoid valve conduit 7 are connected by a three-way valve 3. The first pipeline 4 and the second pipeline 5 of the cylinder 1 are respectively arranged at two ends of the cylinder 1 and are both used for connecting an air source to realize air inlet and air exhaust. One end of the dome valve pipeline 6 is used for connecting a device for controlling the rotation of the valve core of the dome valve, the other end of the dome valve pipeline is used for connecting an air source, the valve core of the dome valve is controlled to rotate to a closed state when the dome valve pipeline 6 is used for air inlet, and the valve core of the dome valve is controlled to rotate to an open state when the dome valve pipeline 6 is used for air inlet. First pipeline 4, dome valve pipeline 6 all are connected through three-way valve 3 with solenoid valve pipeline 7, replace prior art's quick exhaust valve for three-way valve 3, have solved the easy problem of leaking gas that breaks of quick exhaust valve inner membrane gasket.
One end of the cylinder 1 is provided with a connecting rod 8, the connecting rod 8 is connected with the control valve 2, and the expansion of the connecting rod 8 is driven by the movement of a piston 9 in the cylinder 1. When the first pipeline 4 is filled with air, the piston 9 moves in the cylinder 1 towards the direction of the second pipeline, when the piston 9 reaches one end of the cylinder 1, the connecting rod 8 is pushed, and the connecting rod 8 pushes the valve core 10 in the control valve 2, so that the control valve 2 is in an open state. When the second pipeline 5 is filled with air, the piston 9 moves in the cylinder 1 towards the direction of the first pipeline, when the piston 9 leaves one end of the cylinder 1, the connecting rod 8 is driven to contract, the connecting rod 8 drives the valve core 10 in the control valve 2 to close, and the control valve is in a closed state.
The control valve 2 comprises a valve chamber, which is divided by a valve core 10 into two chambers, one of which is provided with a first control valve conduit 11 in communication, the other of which is provided with a second control valve conduit 12 in communication with the dome valve conduit 6. The first pipe 11 of the control valve is connected with a device for controlling the inflation and deflation of the sealing ring of the dome valve. The control valve second pipe 12 is communicated with the dome valve pipe 6 through the chamber of the control valve 2, and when the valve core 10 is in a closed state, the control valve second pipe 12, the dome valve pipe 6 and the control valve 2 can be regarded as a complete dome valve pipe 6; when the valve core 10 is in an open state, the control valve second pipe 12, the dome valve pipe 6 and the control valve 2 can be regarded as a complete dome valve pipe 6, and meanwhile, the control valve first pipe 11 can be regarded as a branch pipe of the dome valve pipe.
The three-way valve 3 is a T-shaped three-way valve. The T-shaped three-way valve can enable three orthogonal pipelines to be mutually communicated and cut off a third channel, and functions of flow splitting and flow converging are achieved.
The utility model discloses a quick exhaust apparatus of dome valve's work flow:
A. when the dome valve needs to be closed, firstly, the electromagnetic valve is opened, gas of a gas source enters the electromagnetic valve pipeline 7, the gas is divided at the three-way valve 3, one part of the gas enters the first pipeline 4, and the other part of the gas enters the dome valve pipeline 6; the gas entering the dome valve duct 6 rapidly passes through the chamber of the control valve 2 into the control valve second duct 12, operating the dome valve spool closed; the gas in the first pipeline 4 enters the cylinder 1, pushes the piston 9 to move to one end of the cylinder 1, and then pushes the connecting rod 8, and the connecting rod 8 pushes the valve core 10 in the control valve 2, so that the control valve 2 is in an open state, and then the gas in the cavity of the control valve 2 enters the first pipeline 11 of the control valve, so that the sealing ring of the control dome valve is inflated, so that the sealing ring is expanded to press the valve core of the dome valve, the whole closing action is completed, and the dome valve is in a closed state.
B. When the dome valve needs to be opened, firstly, the gas source is started to enable gas to enter the second pipeline 5, the gas enters the cylinder 1 through the second pipeline 5, the piston 9 is pushed to leave one end of the cylinder 1, the connecting rod 8 is driven to contract when the piston 9 leaves, the connecting rod 8 drives the valve core 10 in the control valve 2 to be closed, the control valve is in a closed state, and at the moment, the sealing ring of the dome valve is changed from an inflation state to a deflation state, namely, the state of pressing the valve core of the dome valve is changed into a state of being separated from the valve core of the dome valve. Gas in the cylinder 1 passes through the first pipeline 4 and gets into the solenoid valve pipeline 7 through three-way valve 3, open the solenoid valve and make gas outgoing, make the control valve second pipeline 12 simultaneously, gas in the dome valve pipeline 6 all discharges from the solenoid valve pipeline through three-way valve 3, after the control valve second pipeline 12, gas outgoing in the dome valve pipeline 6, the case of dome valve no longer receives the atmospheric pressure influence and returns to the open state position from the closed state position, thereby accomplish whole opening action, the dome valve is the open mode.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. In the technical idea scope of the present invention, it is possible to provide a solution of the present invention with a plurality of simple modifications to avoid unnecessary repetition, and the present invention is not described separately for various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.
Claims (4)
1. A dome valve rapid exhaust device is characterized by comprising a cylinder (1), a control valve (2) and a three-way valve (3); the cylinder (1) is provided with a first pipeline (4) and a second pipeline (5), the control valve (2) is used for controlling inflation and deflation of a sealing ring of the dome valve, and the cylinder (1) is used for controlling opening and closing of the control valve (2); the dome valve rapid exhaust device is also provided with a dome valve pipeline (6) used for controlling the valve core of the dome valve to act and an electromagnetic valve pipeline (7) used for being connected with an air source; the first conduit (4), the dome valve conduit (6) and the solenoid valve conduit (7) are connected by the three-way valve (3).
2. The dome valve quick exhaust device as claimed in claim 1, characterized in that a connecting rod (8) is provided at one end of the cylinder (1), the connecting rod (8) being connected to the control valve (2), the extension and retraction of the connecting rod (8) being driven by the movement of a piston (9) inside the cylinder (1).
3. Dome valve quick venting device according to claim 2, characterized in that said control valve (2) comprises a valve chamber in which a valve spool (10) with an open and closed state is arranged, said valve spool (10) dividing said valve chamber into two chambers, one of which is in communication with a control valve first duct (11) and the other is in communication with said dome valve duct (6) and is provided with a control valve second duct (12).
4. The dome valve quick exhaust device as claimed in claim 1 wherein the three-way valve (3) is a T-shaped three-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920569934.5U CN209892843U (en) | 2019-04-24 | 2019-04-24 | Dome valve quick exhaust device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920569934.5U CN209892843U (en) | 2019-04-24 | 2019-04-24 | Dome valve quick exhaust device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209892843U true CN209892843U (en) | 2020-01-03 |
Family
ID=69019584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920569934.5U Active CN209892843U (en) | 2019-04-24 | 2019-04-24 | Dome valve quick exhaust device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209892843U (en) |
-
2019
- 2019-04-24 CN CN201920569934.5U patent/CN209892843U/en active Active
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