CN215109754U - Dome valve control apparatus - Google Patents
Dome valve control apparatus Download PDFInfo
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- CN215109754U CN215109754U CN202121164141.9U CN202121164141U CN215109754U CN 215109754 U CN215109754 U CN 215109754U CN 202121164141 U CN202121164141 U CN 202121164141U CN 215109754 U CN215109754 U CN 215109754U
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Abstract
The utility model provides a calotte valve controlgear belongs to mechanical valve technical field. The dome valve control device comprises a dome valve, a first pneumatic control valve, a pressure sensor and a control system; the dome valve is provided with a valve core, an air bag and a driving device for driving the valve core to rotate, and the first pneumatic control valve is connected with the driving device and used for controlling the charging and discharging of air in the driving device; the pressure sensor is arranged inside the air bag; the pressure sensor and the first pneumatic control valve are in signal connection with the control system, so that when the control system monitors that the pressure of the air bag represented by the pressure sensor reaches a preset pressure relief pressure value, the gas control state of the first pneumatic control valve on the driving device is regulated. The dome valve control equipment can open the valve after the air bag is depressurized, and effectively avoids contact friction between the valve core and the air bag.
Description
Technical Field
The utility model relates to a mechanical valve field particularly, relates to a dome valve controlgear.
Background
In a pneumatic coal conveying system for modern coal chemical production, a dome valve is a commonly used cut-off valve in a system for conveying solid materials by gas. It is used in dense phase transport systems for bulk, dry, non-sticky, flowable solid materials.
However, if any one of the installation, debugging and use of the dome valve is in trouble, the safe, reliable and economical operation of the dome valve is seriously affected, and finally the transportation system is stopped.
The dome valve core adopts different materials according to different use occasions, different hardening treatment modes are carried out on the surface, and good close contact with the air bag can be ensured by utilizing the smooth and hard surface of the valve core so as to ensure the reliability of sealing. The development trend in the future is to increase the service life of the air bag by improving the material of the air bag to ensure that the air bag has the characteristics of high temperature resistance, corrosion resistance, wear resistance, aging resistance and the like.
However, dome valves frequently suffer from bladder failure at present.
In view of this, the present application is specifically made.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a dome valve controlgear, it can open the valve again after the gasbag pressure release is accomplished, effectively avoids the contact friction between case and the gasbag, reduces or avoids the damaged condition of gasbag, improves the life of gasbag and dome valve.
The utility model discloses can realize like this:
the utility model provides a dome valve controlgear, it includes dome valve, first gas accuse valve, pressure sensor and control system.
The dome valve is provided with a valve core, an air bag and a driving device for driving the valve core to rotate, and the first air control valve is connected with the driving device and used for controlling the charging and discharging of air in the driving device.
The pressure sensor is arranged inside the air bag.
The pressure sensor and the first pneumatic control valve are in signal connection with the control system, so that when the control system monitors that the pressure of the air bag represented by the pressure sensor reaches a preset pressure relief pressure value, the gas control state of the first pneumatic control valve on the driving device is regulated.
In an alternative embodiment, the drive device is a cylinder comprising a piston, a piston rod, and a first and a second cylinder chamber separated by the piston.
One end of the piston rod is connected with the piston, and the other end of the piston rod is connected with the valve core.
In an alternative embodiment, the first pneumatic valve has a first air outlet, a second air outlet and a first air inlet, the first air outlet is communicated with the first cylinder chamber, the second air outlet is communicated with the second cylinder chamber, and the first air inlet is used for introducing an air source.
In an alternative embodiment, the first pneumatic valve is a two-position, three-way solenoid valve.
In an alternative embodiment, the first pneumatic valve further has a third air outlet port serving as an exhaust port of the first cylinder chamber and a fourth air outlet port serving as an exhaust port of the second cylinder chamber.
In an alternative embodiment, the first pneumatic valve is a two-position, five-way solenoid valve.
In an alternative embodiment, a quick exhaust valve is further arranged between the first cylinder chamber and the first air outlet.
In an alternative embodiment, the dome valve control apparatus further comprises a second pneumatic control valve connected to the air bag for controlling the inflation and deflation of the air within the air bag, the second pneumatic control valve being in signal communication with the control system.
In an optional embodiment, the second pneumatic control valve has a first air outlet channel, a first air inlet channel and a second air inlet channel, the first air outlet channel is communicated with the air bag, the first air inlet channel is used as an air outlet and communicated with the atmosphere, and the second air inlet channel is used for introducing an air source.
In an optional embodiment, the dome valve control device further comprises a time delay relay disposed between the control system and the first pneumatic control valve and in signal connection with the control system and the first pneumatic control valve, respectively.
The beneficial effects of the utility model include:
the pressure sensor in signal connection with the control system is arranged in the air bag, and the first pneumatic control valve which is in signal connection with the control system and used for controlling the gas filling amount in the driving device is arranged at the same time, so that when the control system monitors that the pressure of the air bag represented by the pressure sensor reaches a preset pressure relief pressure value, the gas control state of the first pneumatic control valve on the driving device can be regulated and controlled, and the rotation time of the valve core is further controlled. Thereby realize opening the valve again after the gasbag pressure release is accomplished, effectively avoid the contact friction between case and the gasbag, reduce or avoid the damaged condition of gasbag, improve the life of gasbag and dome valve.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a dome valve control apparatus according to an embodiment of the present invention.
Icon: 1-a control system; 2-a drive device; 21-a first cylinder chamber; 22-a piston; 23-a second cylinder chamber; 24-a piston rod; 3-a valve core; 4-air bag; 5-a pressure sensor; 6-a first pneumatic valve; 7-a second pneumatic control valve; 8-quick exhaust valve; 9-a time delay relay; 10-instrument air.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
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 the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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.
Examples
The operating characteristics of the dome valve are: when the valve is closed, the valve core 3 rotates to enable the valve to be in a closed state, and after the valve core 3 is closed in place, the thimble at the position of the link rod touches the gas path change-over switch of the two-position three-way valve to inflate the gas bag 4 in the valve body so as to seal a gap around the valve core 3 and prevent materials from passing through the equipment; when the valve is in the open position, the thimble at the connecting rod leaves the air path change-over switch of the two-position three-way, so that the air bag 4 in the valve body is deflated, and the valve core 3 rotates to the open position, so that the material passes through the equipment.
However, the conventional dome valve often causes breakage of the bladder 4. The inventors have found that the reason for the above problems may be: when the air bag 4 is not completely decompressed, the valve core 3 already starts to act, at the moment, at least partial areas of the valve core 3 and the air bag 4 are still in a contact state, so that friction occurs between the valve core 3 and the air bag 4, and the air bag 4 is damaged.
In view of this, the inventor proposes a dome valve control device, referring to fig. 1, comprising a dome valve, a first pneumatic control valve 6, a pressure sensor 5 and a control system 1.
The dome valve is provided with a valve core 3, an air bag 4 and a driving device 2 for driving the valve core 3 to rotate, and a first air control valve 6 is connected with the driving device 2 and used for controlling the charging and discharging of air in the driving device 2.
The pressure sensor 5 is provided inside the airbag 4 (for example, may be on an inner wall).
The pressure sensor 5 and the first pneumatic control valve 6 are in signal connection with the control system 1, so that when the control system 1 monitors that the pressure of the air bag 4 represented by the pressure sensor 5 reaches a preset pressure relief pressure value, the gas control state of the driving device 2 by the first pneumatic control valve 6 is regulated.
The preset pressure relief value at least cannot be higher than the pressure value when the air bag 4 and the valve core 3 are separated, that is, the preset pressure relief value should satisfy that the air bag 4 and the valve core 3 are in a separated state without any contact under the condition of the pressure relief value.
In some specific embodiments, the preset pressure relief value may be, for example, not higher than 0.02 MPa.
On the basis, the pressure sensor 5 in signal connection with the control system 1 is arranged in the air bag 4, and the first air control valve 6 which is in signal connection with the control system 1 and is used for controlling the charging and discharging of the air in the driving device 2 is arranged, so that when the control system 1 monitors that the pressure of the air bag 4 represented by the pressure sensor 5 reaches a preset pressure relief pressure value, the air control state of the driving device 2 by the first air control valve 6 can be regulated and controlled, and the rotation time of the valve core 3 is further controlled. Thereby realize opening the valve again after 4 decompression of gasbag are accomplished, effectively avoid the contact friction between case 3 and the gasbag 4, reduce or avoid the damaged condition of gasbag 4, improve the life of gasbag 4 and dome valve.
In an alternative embodiment, the driving device 2 in this embodiment is a cylinder, which comprises a piston 22, a piston rod 24, and a first cylinder chamber 21 and a second cylinder chamber 23 separated by the piston 22.
One end of the piston rod 24 is connected to the piston 22, and the other end is connected to the valve body 3.
The piston 22 is pushed to move through the difference of the filling amount of the gas in the first cylinder chamber 21 and the second cylinder chamber 23, and the piston rod 24 moves along with the movement of the piston 22, so that the valve core 3 is driven to rotate, and the opening and closing are realized.
By way of reference, the first pneumatic valve 6 has a first outlet port communicating with the first cylinder chamber 21, a second outlet port communicating with the second cylinder chamber 23, and a first inlet port for the introduction of a source of air (such as instrument air 10).
Specifically, the first pneumatic valve 6 may be a two-position three-way solenoid valve. Wherein "two-bit" means that it has two positions controllable, i.e., "on" and "off". "three-position" means that it has three passages for ventilation, i.e., corresponding to the "first outlet port", "second outlet port", and "first inlet port", respectively, described above.
In specific use, the principle can be referred to as follows:
when the control system 1 monitors that the air bag 4 is depressurized to a preset depressurization pressure value, the control system sends a command signal to the first air control valve 6, and opens the first air outlet (the second air outlet is in a closed state), so that an air source introduced through the first air inlet enters the first air cylinder chamber 21 of the air cylinder through the first air outlet, the piston 22 is pushed to move towards the second air cylinder chamber 23, and then the piston rod 24 connected with the piston 22 moves towards the direction far away from the first air cylinder chamber 21, and the valve core 3 is driven to rotate to an open position.
When the valve core 3 needs to rotate to the off position, the control system 1 sends a command signal to the first air control valve 6, the second air outlet is opened (the first air outlet is in the closed state), so that the air source introduced through the first air inlet enters the second air cylinder chamber 23 of the air cylinder through the second air outlet, the piston 22 is pushed to move towards the first air cylinder chamber 21, and then the piston rod 24 connected with the piston 22 moves towards the direction close to the first air cylinder chamber 21, and the valve core 3 is driven to rotate to the off position.
Further, the above-described first pneumatic valve 6 may also have a fourth outlet port serving as an exhaust port of the first cylinder chamber 21 and a fifth outlet port serving as an exhaust port of the second cylinder chamber 23.
Correspondingly, such a first pneumatic valve 6 may be a two-position, five-way solenoid valve. Wherein "two-position" also means that it has two positions controllable, i.e. "on" and "off". The five-way valve is provided with five ventilation channels, namely corresponding to the first air outlet, the second air outlet, the third air outlet, the fourth air outlet and the first air inlet respectively.
Preferably, a quick exhaust valve 8 is further disposed between the first cylinder chamber 21 and the first air outlet.
In order to further avoid friction between the bladder 4 and the valve core 3, the inventors also propose: the dome valve control device may further comprise a second pneumatic valve 7, the second pneumatic valve 7 being connected to the air-bag 4 and being adapted to control the charging and discharging of the air in the air-bag 4, the second pneumatic valve 7 being in signal connection with the control system 1.
Through setting up independent first gas accuse valve 6 and second gas accuse valve 7 to form independent valve action gas circuit and gasbag 4 and fill the pressure release gas circuit, be favorable to the cooperation condition between better control valve and the gasbag 4.
In an optional embodiment, the second pneumatic control valve 7 has a first air outlet channel, a first air inlet channel and a second air inlet channel, the first air outlet channel is communicated with the airbag 4, the first air inlet channel is used as an air outlet and communicated with the atmosphere, and the second air inlet channel is used for introducing an air source.
Correspondingly, such a second pneumatic control valve 7 may also be a two-position three-way solenoid valve. Wherein "two-position" also means that it has two positions controllable, i.e. "on" and "off". "tee" means that it has three channels for ventilation, i.e. corresponding to the "first outlet channel", "first inlet channel" and "second inlet channel" described above, respectively.
In specific use, the principle can be referred to as follows:
when the valve core 3 is in the off position, the control system 1 sends a command signal to the second pneumatic control valve 7, and opens the first air outlet channel (the first air inlet channel is in the closed state), so that the air source introduced through the second air inlet channel enters the air bag 4 through the first air outlet channel to inflate the air bag 4.
When the valve core 3 needs to rotate to the open position, the control system 1 sends a command signal to the second pneumatic control valve 7 to open the first air inlet channel (the first air outlet channel is in the closed state), so that the air in the air bag 4 is discharged to the outside through the first air inlet channel until the air is separated from the valve core 3. At this time, the control system 1 sends out a command signal to the first pneumatic valve 6 again, opens the first air outlet (the second air outlet is in a closed state), so that the air source introduced through the first air inlet enters the first cylinder chamber 21 of the cylinder through the first air outlet, pushes the piston 22 to move towards the second cylinder chamber 23, further makes the piston rod 24 connected with the piston 22 move towards the direction far away from the first cylinder chamber 21, and drives the valve core 3 to rotate to an open position.
Further, the inventors also propose: the above-mentioned dome valve control device may further comprise a time delay relay 9, the time delay relay 9 being arranged between the control system 1 and the first pneumatic valve 6.
When the valve core 3 needs to rotate to the open position, the control system 1 sends a command signal to the second pneumatic control valve 7 to open the first air inlet channel (the first air outlet channel is in the closed state), so that the air in the air bag 4 is discharged to the outside through the first air inlet channel until the air is separated from the valve core 3. At this time, an instruction signal of the control system 1 is delayed (for example, 2 to 5 seconds) by the delay relay 9 and then transmitted to the first pneumatic control valve 6, so that the first air outlet is opened (the second air outlet is in a closed state), an air source introduced through the first air inlet enters the first air cylinder chamber 21 of the air cylinder through the first air outlet, the piston 22 is pushed to move towards the second air cylinder chamber 23, and then the piston rod 24 connected with the piston 22 moves towards a direction far away from the first air cylinder chamber 21, so that the valve core 3 is driven to rotate to an open position.
It should be noted that other configurations and operation principles of the dome valve not disclosed in this embodiment can be found in the prior art and will not be described in further detail herein.
In conclusion, the dome valve control equipment that this application provided can realize opening the valve again after 4 decompression of gasbag are accomplished, effectively avoids the contact friction between case 3 and the gasbag 4, reduces or avoids the damaged condition of gasbag 4, improves the life of gasbag 4 and dome valve.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A dome valve control apparatus comprising a dome valve, a first pneumatically controlled valve, a pressure sensor and a control system;
the dome valve is provided with a valve core, an air bag and a driving device for driving the valve core to rotate, and the first pneumatic control valve is connected with the driving device and used for controlling the charging and discharging of gas in the driving device;
the pressure sensor is arranged inside the air bag;
the pressure sensor and the first pneumatic control valve are in signal connection with the control system, so that when the control system monitors that the pressure of the air bag represented by the pressure sensor reaches a preset pressure relief pressure value, the gas control state of the driving device by the first pneumatic control valve is regulated.
2. A dome valve control apparatus as set forth in claim 1 wherein said drive means is a cylinder comprising a piston, a piston rod, and first and second cylinder chambers separated by said piston;
one end of the piston rod is connected with the piston, and the other end of the piston rod is connected with the valve core.
3. A dome valve control apparatus as set forth in claim 2 wherein said first pneumatic valve has a first outlet port communicating with said first cylinder chamber, a second outlet port communicating with said second cylinder chamber, and a first inlet port for the passage of a gas source.
4. A dome valve control apparatus as set forth in claim 3 wherein said first pneumatic valve is a two-position, three-way solenoid valve.
5. A dome valve control apparatus as set forth in claim 3 wherein said first pneumatic valve also has a third outlet port serving as an exhaust port for said first cylinder chamber and a fourth outlet port serving as an exhaust port for said second cylinder chamber.
6. A dome valve control apparatus as set forth in claim 5 wherein said first pneumatically controlled valve is a two-position, five-way solenoid valve.
7. A dome valve control apparatus as set forth in claim 3 wherein a quick exhaust valve is further disposed between said first cylinder chamber and said first outlet port.
8. A dome valve control apparatus as set forth in any one of claims 1-7 further comprising a second pneumatically controlled valve connected to said air bladder for controlling the inflation and deflation of the air within said air bladder, said second pneumatically controlled valve being in signal communication with said control system.
9. A dome valve control apparatus as set forth in claim 8 wherein said second air control valve has a first air outlet passage in communication with the air bladder, a first air inlet passage in communication with atmosphere as an air outlet, and a second air inlet passage for the passage of a source of air.
10. A dome valve control apparatus as set forth in claim 9 further comprising a time delay relay disposed between and in signal communication with said control system and said first pneumatically controlled valve, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121164141.9U CN215109754U (en) | 2021-05-27 | 2021-05-27 | Dome valve control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121164141.9U CN215109754U (en) | 2021-05-27 | 2021-05-27 | Dome valve control apparatus |
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| Publication Number | Publication Date |
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| CN215109754U true CN215109754U (en) | 2021-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121164141.9U Active CN215109754U (en) | 2021-05-27 | 2021-05-27 | Dome valve control apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116045067A (en) * | 2023-01-06 | 2023-05-02 | 宁波市奉化区诺鑫气动工程有限公司 | Delay pneumatic control valve |
-
2021
- 2021-05-27 CN CN202121164141.9U patent/CN215109754U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116045067A (en) * | 2023-01-06 | 2023-05-02 | 宁波市奉化区诺鑫气动工程有限公司 | Delay pneumatic control valve |
| CN116045067B (en) * | 2023-01-06 | 2024-05-17 | 宁波市奉化区诺鑫气动工程有限公司 | Delay pneumatic control valve |
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