CN218670845U - Baffle valve opening and closing control system - Google Patents
Baffle valve opening and closing control system Download PDFInfo
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- CN218670845U CN218670845U CN202222955659.5U CN202222955659U CN218670845U CN 218670845 U CN218670845 U CN 218670845U CN 202222955659 U CN202222955659 U CN 202222955659U CN 218670845 U CN218670845 U CN 218670845U
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Abstract
A baffle valve opening and closing control system comprises an air cylinder, a baffle valve driven by the air cylinder to act, a supply air source, a positioner, a first electromagnetic valve, a first pneumatic control reversing valve and a second pneumatic control reversing valve; the supply air source is correspondingly connected with the positioner, the first electromagnetic valve and the first pneumatic reversing valve respectively; the positioner is correspondingly connected with the first pneumatic control reversing valve and the second pneumatic control reversing valve respectively; the first electromagnetic valve is correspondingly connected with the first pneumatic control reversing valve and the second pneumatic control reversing valve respectively, and the first pneumatic control reversing valve and the second pneumatic control reversing valve are correspondingly connected with the air cylinder; the control system has the advantages of low cost and capability of simultaneously adjusting and quickly opening the flapper valve.
Description
Technical Field
The utility model belongs to the technical field of the electrical control technique and specifically relates to a used flapper valve control system that opens and shuts in heating furnace field is related to.
Background
It is well known that combustion apparatuses, such as heating furnaces, are widely used in petroleum, chemical, electrical, and metallurgical industries; in the heating furnace system, under normal conditions, the oxygen content, the negative pressure and the like in the furnace can be controlled by adjusting the opening of the baffle valve according to the process conditions required by production; in addition, when an emergency accident occurs, the baffle valve needs to be opened immediately, so that the smoke in the furnace is released, and the safe operation of the heating furnace is ensured.
Therefore, in order to meet the industrial requirements, a switching flapper valve and an adjusting flapper valve are generally arranged in the heating furnace at the same time; the adjusting flapper valve is generally matched with a positioner for use, when the positioner receives a command signal of 4-20mA, the blade of the flapper valve is controlled to be opened by a certain angle, the angle range is 0-90 degrees, but when the positioner receives the command signal of 4-20mA, the action of the flapper valve is required to be controlled, the action is compared with a feedback signal at the same time, until the blade is opened to a specified angle, the consumed time is relatively long, and if an emergency situation occurs, the blade cannot be opened rapidly, so that the safe operation of the heating furnace is influenced.
The switch baffle valve is generally matched with the electromagnetic valve for use, and the rapid switch of the switch baffle valve is realized by electrifying and powering off the electromagnetic valve, so that the switch baffle valve has the advantage of quick response, but the conventional switch baffle valve cannot adjust the opening angle of the blades so as to realize the requirements of emptying part of smoke and exchanging heat of the rest of smoke in the preheater; meanwhile, because the switch baffle valve is not operated in an opening or closing state for a long time, the shaft and the connecting rod mechanism are easy to corrode and jam, and the like, the switch baffle valve may not operate when needing to be closed or opened, and therefore, the switch baffle valve is expected to rotate within a small angle range at ordinary times to prevent jamming.
In conclusion, because the adjustable baffle valve and the switch baffle valve have obvious advantages and disadvantages, in order to achieve the purpose of simultaneously meeting the requirements of rapidly opening and closing the blades and adjusting the opening angle of the blades, the switch baffle valve and the adjustable baffle valve are required to be arranged on the heating furnace at the same time, and the requirement of industrial use is met by utilizing the matching between the two baffle valves, but the arrangement can obviously improve the manufacturing cost of the heating furnace, and further increase the economic burden of an application party; therefore, it is desirable to design a control system that not only reduces the cost of application, but also achieves the combined advantages of both the on and off flapper valves and the adjustable flapper valve.
Disclosure of Invention
In order to overcome not enough in the background art, the utility model discloses a can enough obviously reduce the application cost, and can also realize the flapper valve control system that opens and shuts of the combination advantage of switch flapper valve and adjusting damper, this system adopts following technical scheme:
a baffle valve opening and closing control system comprises an air cylinder, a baffle valve driven by the air cylinder to act, a supply air source, a positioner, a first electromagnetic valve, a first pneumatic control reversing valve and a second pneumatic control reversing valve;
the supply air source is correspondingly connected with the positioner, the first electromagnetic valve and the first pneumatic reversing valve respectively; the positioner is correspondingly connected with the first pneumatic control reversing valve and the second pneumatic control reversing valve respectively; the first electromagnetic valve is respectively and correspondingly connected with the first pneumatic control reversing valve and the second pneumatic control reversing valve, and the first pneumatic control reversing valve and the second pneumatic control reversing valve are respectively and correspondingly connected with the air cylinder.
Preferably, the supply air source is respectively and correspondingly connected with the positioner, the first electromagnetic valve and the first pneumatic reversing valve after sequentially passing through the one-way valve, the air storage tank and the air filtering pressure reducing valve.
Preferably, the first pneumatic reversing valve is connected with the cylinder through a first air source flow amplifier, and the first air source flow amplifier is also connected with a supply air source; and the second pneumatic control reversing valve is connected with the cylinder through a second air source flow amplifier, and the second air source flow amplifier is also connected with a supply air source.
Preferably, the supply air source is respectively and correspondingly connected with the positioner, the first electromagnetic valve, the first pneumatic reversing valve, the first air source flow amplifier and the second air source flow amplifier after passing through the one-way valve, the air storage tank and the air filtering pressure reducing valve in sequence.
Preferably, the system is provided with a third pneumatic control reversing valve and a second electromagnetic valve, the first pneumatic control reversing valve and the second pneumatic control reversing valve are correspondingly connected with the supply air source through the third pneumatic control reversing valve, the second electromagnetic valve is correspondingly connected with the third pneumatic control reversing valve, and the second electromagnetic valve is correspondingly connected with the supply air source.
Preferably, the first pneumatic reversing valve is connected with the cylinder through a first air source flow amplifier, and the first air source flow amplifier is also connected with a supply air source; the second pneumatic control reversing valve is connected with the cylinder through a second air source flow amplifier, and the second air source flow amplifier is further connected with a supply air source.
Preferably, the supply air source is respectively and correspondingly connected with the positioner, the first electromagnetic valve, the first air source flow amplifier, the second air source flow amplifier, the third air control reversing valve and the second electromagnetic valve after passing through the one-way valve, the air storage tank and the air filtering pressure reducing valve in sequence.
Preferably, the electrical signal control ends of the first electromagnetic valve and the second electromagnetic valve are correspondingly connected with the switching power supply sequentially through the change-over switch and the main switch, and the change-over switch can control any one of the first electromagnetic valve and the second electromagnetic valve to be electrified.
Preferably, the switching power supply is correspondingly connected with a power circuit of the induced draft fan.
Preferably, a manual valve is arranged between the air inlet and the air outlet of the air cylinder.
Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:
the utility model discloses a flapper valve control system that opens and shuts, through first solenoid valve, two gas accuse switching-over valves and locator, can realize simultaneously on a flapper valve that the function is opened fast under blade angle accurate regulation function and the accident situation, this system can realize the function that just can realize after two flapper valves of current regulation flapper valve and switch flapper valve make up promptly on a flapper valve, can also be through the quantity that reduces the flapper valve simultaneously, the effectual purpose that reduces the whole cost of heating furnace that reaches.
Drawings
FIG. 1 is a schematic view of pneumatic control according to the present invention;
FIG. 2 is a schematic view of pneumatic control of the first solenoid valve in a power-off state;
FIG. 3 is a pneumatic control schematic diagram of the first solenoid valve in an energized state;
FIG. 4 is a schematic diagram of pneumatic control in a power-off state for both the first solenoid valve and the second solenoid valve;
FIG. 5 is a schematic view of pneumatic control with the first solenoid valve in a power-on state and the second solenoid valve in a power-off state;
FIG. 6 is a pneumatic control schematic diagram of the first solenoid valve in a de-energized state and the second solenoid valve in an energized state;
fig. 7 is a schematic structural control diagram of the switch.
In the figure: 1. supplying an air source; 2. a positioner; 3. a first solenoid valve; 4. a first pneumatically controlled directional valve; 5. a second pneumatic control directional valve; 6. a cylinder; 7. a flapper valve; 8. a first source flow amplifier; 9. a second air source flow amplifier; 10. a third pneumatic control reversing valve; 11. a second solenoid valve; 12. a one-way valve; 13. a gas storage tank; 14. an air filtration relief valve; 15. a manual valve; 16. a switch; 17. a main switch.
Detailed Description
In the following description, the technical solution of the present invention will be described with reference to the accompanying drawings in the embodiment of the present invention, it should be understood that, if there are the indicated positions or positional relationships such as "upper", "lower", "front", "rear", "left", "right", etc., it only corresponds to the drawings of the present invention, and for convenience of description, it is not intended to indicate or imply that the indicated device or element must have a specific position:
a flapper valve opening and closing control system as described in connection with figures 1-7 of the accompanying drawings, the first embodiment of the control system being: the pneumatic control valve comprises a cylinder 6, a baffle valve 7 driven by the cylinder 6 to act, a supply air source 1, a positioner 2, a first electromagnetic valve 3, a first pneumatic control reversing valve 4 and a second pneumatic control reversing valve 5;
the supply air source 1 is correspondingly connected with the positioner 2, the first electromagnetic valve 3 and the first pneumatic reversing valve 4 respectively; the positioner 2 is correspondingly connected with a first pneumatic control reversing valve 4 and a second pneumatic control reversing valve 5 respectively; the first electromagnetic valve 3 is correspondingly connected with a first pneumatic control reversing valve 4 and a second pneumatic control reversing valve 5 respectively, and the first pneumatic control reversing valve 4 and the second pneumatic control reversing valve 5 are correspondingly connected with an air cylinder 6; in the embodiment, the first electromagnetic valve 3, the two pneumatic control reversing valves and the positioner 2 can simultaneously realize the function of accurately adjusting the blade angle and the function of quickly opening (or closing) in an accident state on one baffle valve 7;
taking the example that the flapper valve 7 is opened in the initial state, that is, when the first electromagnetic valve 3 is powered off, the flapper valve 7 is correspondingly controlled to be opened, and combining the component structure shown in fig. 1, the working principle of the flapper valve opening and closing control system in this embodiment can be correspondingly obtained as follows:
when the first electromagnetic valve 3 is electrified, the first electromagnetic valve 3 is switched to a right station, the air source controls the first pneumatic reversing valve 4 and the second pneumatic reversing valve 5 to reverse through the first electromagnetic valve 3 and is switched to a left station, so that the air supply source 1, the positioner 2, the first pneumatic reversing valve 4, the air cylinder 6, the second pneumatic reversing valve 5 and the positioner 2 form a loop, and the positioner 2 can accurately adjust the opening angle of the baffle valve 7 according to a received command signal;
when the first electromagnetic valve 3 is powered off, the first electromagnetic valve 3 is switched to a left station, an air source is in an open circuit through the first electromagnetic valve 3, the first pneumatic reversing valve 4 and the second pneumatic reversing valve 5 return to an initial right station, the positioner 2 is switched off, and the air source is discharged from the second pneumatic reversing valve 5 through the first pneumatic reversing valve 4, the air cylinder 6 and the second pneumatic reversing valve 5, so that the baffle valve 7 is opened quickly;
it is to be noted that the initial state of the flapper valve 7, either open or closed, needs to be set according to the specific process requirements, and that in practice, only one of these two states can occur; the principle described in connection with the embodiment shows that the flapper valve 7 designed by the present application has both the angle adjustment function and the quick opening (or closing) function, and the embodiment is mainly suitable for the case where the adjustable flapper valve needs to be opened (or closed) quickly in an emergency, so as to meet the corresponding process requirements.
The second embodiment of the control system is that on the basis of the first embodiment, the supply air source 1 is respectively and correspondingly connected with the positioner 2, the first electromagnetic valve 3 and the first pneumatic reversing valve 4 after sequentially passing through the one-way valve 12, the air storage tank 13 and the air filtering pressure reducing valve 14, wherein the air storage tank 13 and the one-way valve 12 can ensure that air is always in a passage, namely the air supply cutoff state is not considered, and the air quantity of the air storage tank 13 can ensure that the baffle valve 7 can complete more than 3 switching actions; in addition, the arrangement of the check valve 12 can avoid the situation that when the air supply source 1 is cut off, the air in the air storage tank 13 flows backwards, and the air filtering pressure reducing valve 14 is used for reducing and stabilizing the pressure of the air path, and simultaneously filters the air in the air supply source to ensure that the working air reaching the air cylinder 6 is clean, as shown in the structure shown in the attached fig. 2-3.
A third embodiment of the control system is that, on the basis of the first embodiment, the first pneumatic directional control valve 4 is connected with the cylinder 6 through a first air source flow amplifier 8, and the first air source flow amplifier 8 is further connected with the supply air source 1; the second pneumatic-control reversing valve 5 is connected with the cylinder 6 through a second air source flow amplifier 9, the second air source flow amplifier 9 is also connected with the supply air source 1, the two air source flow amplifiers are utilized, the air from the supply air source 1 and the air passing through the corresponding pneumatic-control reversing valve can be simultaneously combined, so that the rapid action of the cylinder 6 is ensured, wherein the supply air source 1 directly enters the cylinder 6 through the corresponding air source flow amplifier, in addition, the air input of the two air source flow amplifiers is controlled through the positioner 2, so that the opening degree of the baffle valve 7 is controlled, and the structure shown in the attached figures 2-3 is referred.
A fourth embodiment of the control system is that, on the basis of the third embodiment, the supply air source 1 is connected with the positioner 2, the first electromagnetic valve 3, the first pneumatic control directional valve 4, the first air source flow amplifier 8 and the second air source flow amplifier 9 respectively after passing through the one-way valve 12, the air storage tank 13 and the air filtering pressure reducing valve 14 in sequence; the functions of the check valve 12, air reservoir 13 and air filter pressure relief valve 14 in this embodiment are the same as in the second embodiment, see the structure shown in figures 2-3.
As shown in fig. 4-6, a fifth embodiment of the present control system is that, on the basis of the first embodiment, the present control system is provided with a third pneumatic-control directional valve 10 and a second electromagnetic valve 11, the first pneumatic-control directional valve 4 and the second pneumatic-control directional valve 5 are both correspondingly connected with the supply air source 1 through the third pneumatic-control directional valve 10, the second electromagnetic valve 11 is correspondingly connected with the third pneumatic-control directional valve 10, and the second electromagnetic valve 11 is correspondingly connected with the supply air source 1; by arranging the second electromagnetic valve 11 and the third pneumatic control reversing valve 10, the control system of the baffle valve 7 can have three control states of adjustment, quick opening and quick closing, so that various process requirements of the heating furnace can be met;
taking the example that the flapper valve 7 is opened in the initial state, that is, the first electromagnetic valve 3 and the second electromagnetic valve 11 are both in the power-off state, the corresponding control flapper valve 7 is in the open state:
as shown in fig. 6, when the second electromagnetic valve 11 is powered on and the first electromagnetic valve 3 is powered off, the second electromagnetic valve 11 is switched to the right station, the air source controls the third air-controlled reversing valve 10 to be switched to the upper station through the second electromagnetic valve 11, the air source returns to the third air-controlled reversing valve 10 through the third air-controlled reversing valve 10, the second air-controlled reversing valve 5, the air cylinder 6 and the first air-controlled reversing valve 4, the air source is discharged from the third air-controlled reversing valve 10, and the baffle valve 7 is controlled to be closed;
as shown in fig. 4, when the second electromagnetic valve 11 is powered off and the first electromagnetic valve 3 is also powered off, the second electromagnetic valve returns to the left station, the air source is powered off through the second electromagnetic valve 11, so that the third pneumatic-control reversing valve 10 returns to the lower station, and at this time, the air source returns to the third pneumatic-control reversing valve 10 through the third pneumatic-control reversing valve 10, the first pneumatic-control reversing valve 4, the air cylinder 6 and the second pneumatic-control reversing valve 5, is discharged from the third pneumatic-control reversing valve 10, and controls the flapper valve 7 to open;
from the above working principle, it can be seen that the rapid closing and the rapid opening of the flapper valve 7 can be realized by energizing and de-energizing the second solenoid valve 11. In the process, the first electromagnetic valve 3 is powered off, namely, the air source is powered off through the first electromagnetic valve 3, and at the moment, the air source cannot control the first air-controlled reversing valve 4 and the second air-controlled reversing valve 5 to reverse through the first electromagnetic valve 3.
In addition, as shown in fig. 5, when the first electromagnetic valve 3 is in a power-on state and the second electromagnetic valve 11 is in a power-off state, the air source controls the first pneumatic reversing valve 4 and the second pneumatic reversing valve 5 to reverse and switch to a left station through the first electromagnetic valve 3, at this time, the second electromagnetic valve 11 and the third pneumatic reversing valve 10 do not participate in working, the first electromagnetic valve 3 switches to a right station to form a passage, and the air source controls the first pneumatic reversing valve 4 and the second pneumatic reversing valve 5 to reverse and switch to a left station through the first electromagnetic valve 3, so that the air source 1, the positioner 2, the first pneumatic reversing valve 4, the cylinder 6, the second pneumatic reversing valve 5 and the positioner 2 form a loop, and the positioner 2 realizes accurate adjustment of the opening angle of the flapper valve 7;
by combining the working principle, the flapper valve can realize quick opening and closing and can also realize accurate adjustment of the opening angle of the blade. Thus, this embodiment may be adapted to the need to adjust the flapper valve to achieve rapid opening and closing, as well as the need to open and close the flapper valve to achieve angular adjustment. In practice, however, the adjustable flapper valve is not required to have a quick-opening and closing function, but only needs to have one of a quick-opening or quick-closing state, and the other state is controlled by a 4mA/20mA adjustment signal sent to the positioner. Therefore, the embodiment is mainly suitable for opening and closing the baffle valve, can realize small-angle adjustment on the basis of quick opening and closing, and avoids the problems that the rotating shaft and the connecting rod mechanism are rusted and jammed due to long-time non-action, and the rotating shaft and the connecting rod mechanism cannot act and further cause accidents under emergency conditions.
A sixth embodiment of the control system is that, on the basis of the fifth embodiment, the first pneumatic directional control valve 4 is connected with the cylinder 6 through a first air source flow amplifier 8, and the first air source flow amplifier 8 is further connected with the supply air source 1; the second pneumatic control reversing valve 5 is connected with the cylinder 6 through a second air source flow amplifier 9, and the second air source flow amplifier 9 is also connected with the supply air source 1; the function of the two source flow amplifiers in this embodiment is the same as in the third embodiment, see the structure shown in figures 4-6.
A seventh embodiment of the control system is that, on the basis of the sixth embodiment, the supply air source 1 is respectively and correspondingly connected with the positioner 2, the first electromagnetic valve 3, the first air source flow amplifier 8, the second air source flow amplifier 9, the third air control directional valve 10 and the second electromagnetic valve 11 after passing through the one-way valve 12, the air storage tank 13 and the air filtering pressure reducing valve 14 in sequence; the function of the check valve 12, air reservoir 13 and air filter pressure relief valve 14 in this embodiment is the same as in the second embodiment, see the structure shown in figures 4-6.
The eighth embodiment of the control system is that, on the basis of the fifth, sixth, and seventh embodiments, the electrical signal control ends of the first electromagnetic valve 3 and the second electromagnetic valve 11 are correspondingly connected to the switching power supply through the change-over switch 16 and the main switch 17 in sequence, and the change-over switch 16 can control any one of the first electromagnetic valve 3 and the second electromagnetic valve 11 to be electrified, so that the on-off of the two electromagnetic valves is controlled through the change-over switch 16 and the main switch 17, which can ensure that the control system of the flapper valve 7 still has three control states of adjustment, quick opening, and quick closing, and can simplify the control logic of the control system of the flapper valve 7, thereby facilitating the operation of a worker and the maintenance of the system, see the structure shown in fig. 7.
The ninth embodiment of the control system is that, on the basis of the eighth embodiment, the switching power supply is correspondingly connected with the power circuit of the induced draft fan, that is, the control system is interlocked with the induced draft fan, so that the control circuit and the power circuit of the induced draft fan can be synchronized, when the induced draft fan fails, the control system loses power supply, and therefore the two electromagnetic valves are both powered off and disconnected, which is shown in the structure shown in fig. 7.
The tenth embodiment of the control system is that, on the basis of the above embodiments, a manual valve 15 is arranged between the air inlet and the air outlet of the air cylinder 6, so as to conveniently realize the switching from air control to manual control.
The details of the present invention not described in detail are prior art, and it will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Claims (10)
1. A flapper valve opening and closing control system comprises a cylinder (6) and a flapper valve (7) driven by the cylinder to act, and is characterized in that: the pneumatic control reversing valve also comprises a supply air source (1), a positioner (2), a first electromagnetic valve (3), a first pneumatic control reversing valve (4) and a second pneumatic control reversing valve (5);
the supply air source (1) is correspondingly connected with the positioner (2), the first electromagnetic valve (3) and the first pneumatic reversing valve (4) respectively; the positioner (2) is correspondingly connected with the first pneumatic control reversing valve (4) and the second pneumatic control reversing valve (5) respectively; the first electromagnetic valve (3) is correspondingly connected with the first pneumatic control reversing valve (4) and the second pneumatic control reversing valve (5) respectively, and the first pneumatic control reversing valve (4) and the second pneumatic control reversing valve (5) are correspondingly connected with the air cylinder (6).
2. The flapper valve opening and closing control system of claim 1 wherein: the supply air source (1) is respectively and correspondingly connected with the positioner (2), the first electromagnetic valve (3) and the first pneumatic reversing valve (4) after sequentially passing through the one-way valve (12), the air storage tank (13) and the air filtering pressure reducing valve (14).
3. The flapper valve opening and closing control system of claim 1 wherein: the first air control reversing valve (4) is connected with the cylinder (6) through a first air supply flow amplifier (8), and the first air supply flow amplifier (8) is also connected with the supply air supply (1); the second pneumatic control reversing valve (5) is connected with the air cylinder (6) through a second air source flow amplifier (9), and the second air source flow amplifier (9) is further connected with the supply air source (1).
4. The flapper valve opening and closing control system of claim 3 wherein: the supply air source (1) is respectively and correspondingly connected with the positioner (2), the first electromagnetic valve (3), the first pneumatic reversing valve (4), the first air source flow amplifier (8) and the second air source flow amplifier (9) after sequentially passing through the one-way valve (12), the air storage tank (13) and the air filtering pressure reducing valve (14).
5. The flapper valve opening and closing control system of claim 1 wherein: the system is provided with a third pneumatic control reversing valve (10) and a second electromagnetic valve (11), wherein the first pneumatic control reversing valve (4) and the second pneumatic control reversing valve (5) are correspondingly connected with a supply air source (1) through the third pneumatic control reversing valve (10), the second electromagnetic valve (11) is correspondingly connected with the third pneumatic control reversing valve (10), and the second electromagnetic valve (11) is correspondingly connected with the supply air source (1).
6. The flapper valve opening and closing control system of claim 5 wherein: the first air control reversing valve (4) is connected with the cylinder (6) through a first air supply flow amplifier (8), and the first air supply flow amplifier (8) is also connected with the supply air supply (1); the second pneumatic control reversing valve (5) is connected with the cylinder (6) through a second air source flow amplifier (9), and the second air source flow amplifier (9) is further connected with the supply air source (1).
7. The flapper valve opening and closing control system of claim 6 wherein: the air supply system is characterized in that a supply air source (1) is respectively and correspondingly connected with a positioner (2), a first electromagnetic valve (3), a first air source flow amplifier (8), a second air source flow amplifier (9), a third air control reversing valve (10) and a second electromagnetic valve (11) after sequentially passing through a one-way valve (12), an air storage tank (13) and an air filtering pressure reducing valve (14).
8. The flapper valve opening and closing control system of any of claims 5-7 wherein: the electric signal control ends of the first electromagnetic valve (3) and the second electromagnetic valve (11) are correspondingly connected with a switch power supply sequentially through a change-over switch (16) and a main switch (17), and the change-over switch (16) can control the electrification of any one of the first electromagnetic valve (3) and the second electromagnetic valve (11).
9. The flapper valve opening and closing control system of claim 8 wherein: and the switching power supply is correspondingly connected with a power circuit of the induced draft fan.
10. The flapper valve opening and closing control system of any of claims 1-9, wherein: a manual valve (15) is arranged between the air inlet and the air outlet of the air cylinder (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222955659.5U CN218670845U (en) | 2022-11-07 | 2022-11-07 | Baffle valve opening and closing control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222955659.5U CN218670845U (en) | 2022-11-07 | 2022-11-07 | Baffle valve opening and closing control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218670845U true CN218670845U (en) | 2023-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222955659.5U Active CN218670845U (en) | 2022-11-07 | 2022-11-07 | Baffle valve opening and closing control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218670845U (en) |
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2022
- 2022-11-07 CN CN202222955659.5U patent/CN218670845U/en active Active
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