CN216295479U - Air pressure control device capable of realizing power-off and gas-off protection - Google Patents
Air pressure control device capable of realizing power-off and gas-off protection Download PDFInfo
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- CN216295479U CN216295479U CN202122553331.6U CN202122553331U CN216295479U CN 216295479 U CN216295479 U CN 216295479U CN 202122553331 U CN202122553331 U CN 202122553331U CN 216295479 U CN216295479 U CN 216295479U
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Abstract
The utility model relates to an air pressure control device capable of realizing power-off and gas-off protection, which comprises an air source device, a reversing solenoid valve, an air cylinder, an on-position magnetic switch, an off-position magnetic switch, a middle-position magnetic switch, a coupler and a pneumatic gate valve, wherein the air source device is communicated with a P port of the reversing solenoid valve through an air source pipeline, and a pressure transmitter is arranged on the air source pipeline to detect the pressure state of an outlet of the air source device; the opening A and the opening B of the reversing solenoid valve are respectively communicated with the opening A and the opening B of the cylinder, the opening-in-place magnetic switch, the closing-in-place magnetic switch and the middle-position magnetic switch are installed on the cylinder, and the moving rod of the cylinder is connected with the pneumatic gate valve through the coupler so as to control the pneumatic gate valve to work. The device is favorable for keeping the water inlet pneumatic gate valve in the state before power failure or gas failure under the condition of sudden power failure or gas failure.
Description
Technical Field
The utility model belongs to the field of water purification in water plants, and particularly relates to an air pressure control device capable of realizing power-off and gas-off protection.
Background
In the running process of a tap water plant, the water inlet pneumatic gate valve of the filter tank is designed, and a control system manually or automatically opens and closes the gate valve to realize normal water use of the filtering process. However, considering the situations of control circuit failure of the control pneumatic gate valve, sudden power failure of a water plant, sudden air failure of an air pressure circuit and the like, the opened water inlet pneumatic gate valve can be closed, so that the water source which is originally required to be subjected to the filtering process is accumulated in the water inlet channel, the filtering process procedure can be disordered, overflow can also occur in the filtering tank, and economic loss is caused.
Disclosure of Invention
The utility model aims to provide an air pressure control device capable of realizing power-off and gas-off protection, which is favorable for keeping a water-inlet pneumatic gate valve in a state before power-off or gas-off under the condition of sudden power-off or gas-off.
In order to achieve the purpose, the utility model adopts the technical scheme that: a pneumatic control device capable of realizing power-off and gas-off protection comprises an air source device, a reversing solenoid valve, an air cylinder, an on-position magnetic switch, an off-position magnetic switch, a middle-position magnetic switch, a coupler and a pneumatic gate valve, wherein the air source device is communicated with a P port of the reversing solenoid valve through an air source pipeline, and a pressure transmitter is arranged on the air source pipeline to detect the pressure state of an outlet of the air source device; the opening A and the opening B of the reversing solenoid valve are respectively communicated with the opening A and the opening B of the cylinder, the opening-in-place magnetic switch, the closing-in-place magnetic switch and the middle-position magnetic switch are installed on the cylinder, and the moving rod of the cylinder is connected with the pneumatic gate valve through the coupler so as to control the pneumatic gate valve to work.
Further, the air source device comprises an air compressor, a control valve, an air storage tank, a filter and a cold dryer, wherein an outlet of the air compressor is connected with an inlet of the air storage tank through a first control valve, an outlet of the air storage tank is connected with an inlet of the cold dryer through a first filter and a second control valve, and an outlet of the cold dryer is connected with an air source pipeline through a second filter and a third control valve.
Furthermore, the reversing electromagnetic valve adopts a double-electric-control three-position five-way reversing electromagnetic valve.
Further, the cylinder adopts a straight stroke double-acting cylinder.
Furthermore, the installation position of the middle magnetic switch can be adjusted, and the middle magnetic switch is matched with a tank wall spray head during backwashing of the filter tank, and the pneumatic gate valve is opened to set the opening degree, so that the foam in the filter tank is washed clean.
Compared with the prior art, the utility model has the following beneficial effects: the air pressure control device capable of realizing power-off and gas-off protection can prevent the water-inlet pneumatic gate valve from being closed along with sudden power-off and gas-off, so that the serious influence on the subsequent filtering process is caused. In addition, the air cylinder is provided with a middle magnetic switch and can adjust the position so as to be matched with the tank wall spray head to open the opening of the corresponding pneumatic gate valve during the back flushing of the filter tank, thereby being beneficial to the flushing effect of the filter tank.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus according to an embodiment of the present invention.
In the figure: 1. the device comprises an air compressor, 2, a control valve, 3, an air storage tank, 4, a filter, 5, a cooling dryer, 6, a pressure transmitter, 7, a three-position five-way reversing electromagnetic valve, 8, a straight stroke double-acting air cylinder, 9, an on-position magnetic switch, 10, an off-position magnetic switch, 11, a middle-position magnetic switch, 12, a coupler, 13 and a pneumatic gate valve.
Detailed Description
The utility model is further explained below with reference to the drawings and the embodiments.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As shown in fig. 1, the present embodiment provides an air pressure control device capable of implementing power-off and gas-off protection, which includes an air source device, a reversing solenoid valve 7, an air cylinder 8, an on-to-position magnetic switch 9, an off-to-position magnetic switch 10, a middle-position magnetic switch 11, a coupler 12, and a pneumatic gate valve 13. The air source device is communicated with a P port of the reversing electromagnetic valve 7 through an air source pipeline, and a pressure transmitter is installed on the air source pipeline to detect and monitor the pressure state of the pneumatic system. The port A and the port B of the reversing electromagnetic valve 7 are respectively communicated with the port A and the port B of the air cylinder 8, and the power-off and air-off protection functions of the whole pneumatic system are realized by utilizing the product working characteristics of the reversing electromagnetic valve 7 and the air cylinder 8. The in-place opening magnetic switch 9, the in-place closing magnetic switch 10 and the middle magnetic switch 11 are installed on the air cylinder 8, and a moving rod of the air cylinder 8 is connected with a pneumatic gate valve 13 through a coupler 12 to control the pneumatic gate valve to work. Corresponding state signals are sent when the cylinder is opened and closed in place, and the signals of the middle magnetic switch are used for participating in the ground control of the pneumatic gate valve during the backwashing of the filter tank; the pneumatic gate valve is connected with the shaft of the cylinder through a coupler, and the opening and closing state of the valve is driven by the action state of the pneumatic system through a mechanical mechanism.
The middle magnetic switch 11 can adjust the installation position, and is matched with a tank wall spray head during the back flushing of the filter tank, and the pneumatic gate valve is opened to set the opening degree, so that the foam in the filter tank is flushed clean.
In this embodiment, the air supply unit includes air compressor machine 1, control valve 2, gas holder 3, filter 4 and cold machine 5 of doing, 5 exports of air compressor machine through first control valve and 3 access connections of gas holder, 3 exports of gas holder through first filter and second control valve and the 5 access connections of cold machine of doing, the 5 exports of cold machine of doing is connected with the air supply pipeline through second filter and third control valve.
In this embodiment, the reversing solenoid valve 7 is a dual-electric-control three-position five-way reversing solenoid valve. The cylinder 8 adopts a straight stroke double-acting cylinder.
The filter tank normally works: when the filter tank needs to be filled with water, a control device sends out a corresponding electric signal to enable a left coil of the three-position five-way reversing solenoid valve to be electrified, an opening A in the reversing solenoid valve is communicated with O1, an opening B is communicated with an opening P, air pressure of an air source enters the opening B of the air cylinder through a BP (back propagation) line of the reversing solenoid valve, the opening A of the air cylinder is communicated with the atmosphere through an AO1 line of the reversing solenoid valve to push a piston in an air lever to move leftwards so as to drive a pneumatic gate valve to be opened, and when the air valve is opened in place, a state signal is fed back through an on-position magnetic switch; when the filter tank needs to close water inlet, a corresponding electric signal is sent by a control device, a right coil of the three-position five-way reversing solenoid valve is electrified, an A port in the reversing solenoid valve is communicated with a P port, a B port in the reversing solenoid valve is communicated with an O2 port, air pressure of an air source enters an A port of the air cylinder through an AP (access point) line of the reversing solenoid valve, the B port of the air cylinder is communicated with atmosphere through a BO2 line of the reversing solenoid valve, a piston in an air rod is pushed to move rightwards, a pneumatic gate valve is driven to close, and a state signal is fed back through a magnetic switch in place when the air valve is closed in place; when the filter chamber backwashing requires a small opening degree to open the pneumatic gate valve, the control device is arranged, when the air cylinder piston moves to the middle position magnetic switch position, a control signal is sent out to ensure that the left coil and the right coil of the three-position five-way reversing solenoid valve are all powered off, the reversing solenoid valve is in a middle sealing state, namely the port A and the port B of the reversing solenoid valve are sealed, the left cavity and the right cavity of the air cylinder are also sealed, the two ends of the air cylinder can not exhaust to ensure that the air cylinder stops at the corresponding positions, the pneumatic gate valve is driven to open the corresponding opening degree, and the filter chamber backwashing program is completed by matching with the tank wall spray head.
And (3) power-off maintaining: in the filtering process, the system is suddenly powered off, the left coil and the right coil of the three-position five-way reversing solenoid valve are powered off, the reversing solenoid valve is in a middle sealing state, namely the port A and the port B of the reversing solenoid valve are sealed, the left cavity and the right cavity of the air cylinder are also sealed, the two ends of the air cylinder cannot exhaust air, the air cylinder is kept at the original position, and the pneumatic gate valve is kept in a valve opening state.
And (3) keeping the air supply off: in the filtering process, the system is suddenly cut off, the pressure transmitter monitors the system and sends out a control signal, so that the left coil and the right coil of the three-position five-way reversing electromagnetic valve are all powered off, and the principle is the same.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (5)
1. The air pressure control device capable of realizing power-off and gas-off protection is characterized by comprising an air source device, a reversing solenoid valve, an air cylinder, an on-position magnetic switch, an off-position magnetic switch, a middle-position magnetic switch, a coupler and a pneumatic gate valve, wherein the air source device is communicated with a P port of the reversing solenoid valve through an air source pipeline, and a pressure transmitter is arranged on the air source pipeline to detect the pressure state of an outlet of the air source device; the opening A and the opening B of the reversing solenoid valve are respectively communicated with the opening A and the opening B of the cylinder, the opening-in-place magnetic switch, the closing-in-place magnetic switch and the middle-position magnetic switch are installed on the cylinder, and the moving rod of the cylinder is connected with the pneumatic gate valve through the coupler so as to control the pneumatic gate valve to work.
2. The air pressure control device capable of realizing power-off and gas-off protection as claimed in claim 1, wherein the air source device comprises an air compressor, a control valve, an air storage tank, a filter and a cold dryer, an outlet of the air compressor is connected with an inlet of the air storage tank through a first control valve, an outlet of the air storage tank is connected with an inlet of the cold dryer through a first filter and a second control valve, and an outlet of the cold dryer is connected with an air source pipeline through a second filter and a third control valve.
3. The pneumatic control device capable of realizing power-off and gas-off protection as claimed in claim 1, wherein the reversing solenoid valve is a dual-electric control three-position five-way reversing solenoid valve.
4. The pneumatic control device capable of achieving power-off and gas-off protection as claimed in claim 1, wherein the cylinder is a straight stroke double-acting cylinder.
5. The air pressure control device capable of realizing power-off and air-off protection as claimed in claim 1, wherein the middle magnetic switch can adjust the installation position, and when the filter tank is backwashed, the middle magnetic switch is matched with the tank wall spray head, and the pneumatic gate valve is opened to set the opening degree, so that the foam in the filter tank is flushed clean.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202122553331.6U CN216295479U (en) | 2021-10-22 | 2021-10-22 | Air pressure control device capable of realizing power-off and gas-off protection |
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CN202122553331.6U CN216295479U (en) | 2021-10-22 | 2021-10-22 | Air pressure control device capable of realizing power-off and gas-off protection |
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CN216295479U true CN216295479U (en) | 2022-04-15 |
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CN202122553331.6U Active CN216295479U (en) | 2021-10-22 | 2021-10-22 | Air pressure control device capable of realizing power-off and gas-off protection |
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