Air path structure of adjusting type air cylinder

Abstract

The utility model discloses a gas circuit structure of an adjustable cylinder. The gas circuit structure comprises a gas source, a filtering pressure reducing valve, a positioner, an electromagnetic valve, a pneumatic amplifier and an actuator, an inlet of the filtering pressure reducing valve is connected with an air source; an inlet of the positioner is connected with an outlet of the filtering pressure reducing valve; by opening the filtering pressure reducing valve, gas moves to one side of the pneumatic amplifier, an electric signal of 24VDC controls the electromagnetic valve, the electromagnetic valve is electrified, a gas source enters the air cylinder through the pneumatic amplifier, and the opening degree of the electromagnetic valve is adjusted and controlled according to a current signal of 4-20mA input by the positioner; under the condition that the electromagnetic valve loses power, the pneumatic amplifier rapidly exhausts air, and the electromagnetic valve is rapidly closed at the moment; the gas circuit is simplified, the user cost is saved, the gas circuit effect is not affected, the number of elements in the gas circuit is reduced, gas circuit fault points can be effectively reduced, and the user site gas circuit is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinders, and specifically relates to a gas circuit structure of an adjustable cylinder. Background Technique

[0002] The gas circuit structure of an adjustable cylinder mainly consists of a cylinder, a control logic valve, a gas-liquid intensifying cylinder, and a control logic valve. Among them, the cylinder is further composed of a cylinder barrel, end covers, a piston rod, a piston, and seals. The control logic valve mainly controls the flow direction, pressure, and flow rate of the working medium, enabling the actuator to act in a certain sequence. The gas-liquid intensifying cylinder integrates an oil cylinder, a logic valve, and a control logic valve, and drives the extension and retraction of the oil cylinder through compressed air.

[0003] Currently, for most existing gas circuit structures of cylinders, when the piston moves backward, compressed air or gas enters the cylinder barrel through the air inlet, and a sealed space is formed between the piston and the cylinder barrel. When the piston moves forward, the gas is compressed, its volume decreases, the pressure and temperature of the gas increase, and the force of the compressed gas acts on the piston, causing it to move backward, converting the energy of the compressed gas into mechanical energy. This force can be used to drive various moving devices and mechanical equipment. After the work is completed, the compressed gas is released through the exhaust port; however, due to the complex settings of the above-mentioned gas circuit structures, it may increase certain costs during use, affect the gas circuit effect, and further increase the number of fault points in the gas circuit structure, making maintenance more cumbersome and resulting in unstable gas circuit operation at the user site. In view of this, we introduce a gas circuit structure of an adjustable cylinder. Content of the Utility Model

[0004] The purpose of the utility model is to provide a gas circuit structure of an adjustable cylinder to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A gas circuit structure of an adjustable cylinder, comprising: a gas source, a filter pressure reducing valve, a positioner, a solenoid valve, a pneumatic amplifier, and an actuator;

[0006] The inlet of the filter pressure reducing valve is connected to the gas source, and the model of the filter pressure reducing valve is: AW40-N04B-2-B-X2330;

[0007] The inlet of the positioner is connected to the outlet of the filter pressure reducing valve;

[0008] The inlet of the solenoid valve is connected to the outlet of the positioner, and the model of the solenoid valve is: NF8327B112;

[0009] The inlet of the pneumatic amplifier is connected to the outlet of the solenoid valve, and the inlet of the pneumatic amplifier is connected to the outlet of the filter pressure reducing valve;

[0010] The inlet of the actuator is connected to the outlet of the pneumatic amplifier. The actuator includes a cylinder, a piston, a piston rod, and an elastic member.

[0011] Preferably, the piston is connected inside the cylinder, the piston rod is connected to one end of the piston, and the elastic member is arranged on one side of the piston rod.

[0012] Preferably, the elastic member is a compression spring.

[0013] Preferably, the solenoid valve is connected to 24V DC.

[0014] Preferably, the positioner is connected to a 4 - 20mA current signal.

[0015] Preferably, the inlet of the air source is connected to a sealing pipe, and the thread inside the sealing pipe is RC3 / 4.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: By opening the filter pressure reducing valve, the gas moves to one side of the pneumatic amplifier, and a 24V DC electrical signal controls the solenoid valve to make the solenoid valve energized. The air source enters the cylinder through the pneumatic amplifier, and the opening degree of the solenoid valve realizes the adjustment and control of the solenoid valve and the filter pressure reducing valve according to the 4 - 20mA current signal input by the positioner;

[0017] When the solenoid valve loses power, the pneumatic amplifier quickly exhausts air, and at this time the solenoid valve quickly closes;

[0018] This utility model simplifies the air circuit, saves user costs, does not affect the air circuit effect at the same time, and reducing the number of components in the air circuit can effectively reduce the air circuit fault points, making the user's on - site air circuit more stable. Brief Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of the overall air circuit structure of the regulating cylinder of the present utility model.

[0020] In the figure: 1. Filter pressure reducing valve; 2. Solenoid valve; 3. Pneumatic amplifier; 4. Positioner; 5. Actuator; 6. Cylinder; 61. Piston; 62. Piston rod; 63. Elastic member; 7. Air source. Detailed Embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer toFigure 1 , the present utility model provides a technical solution: an air circuit structure of an adjustable cylinder, comprising: a gas source 7;

[0023] A filter pressure reducing valve 1, the inlet of the filter pressure reducing valve 1 is connected to the gas source 7, and the model of the filter pressure reducing valve 1 is: AW40-N04B-2-B-X2330;

[0024] A positioner 4, the inlet of the positioner 4 is connected to the outlet of the filter pressure reducing valve 1;

[0025] An electromagnetic valve 2, the inlet of the electromagnetic valve 2 is connected to the outlet of the positioner 4, and the model of the electromagnetic valve 2 is: NF8327B112;

[0026] A pneumatic amplifier 3, the inlet of the pneumatic amplifier 3 is connected to the outlet of the electromagnetic valve 2, and the inlet of the pneumatic amplifier 3 is connected to the outlet of the filter pressure reducing valve 1;

[0027] An actuator 5, the inlet of the actuator 5 is connected to the outlet of the pneumatic amplifier 3, and the actuator 5 includes a cylinder 6, a piston 61, a piston rod 62 and an elastic member 63.

[0028] The piston 61 is connected inside the cylinder 6, the piston rod 62 is connected to one end of the piston 61, and the elastic member 63 is arranged on one side of the piston rod 62.

[0029] The elastic member 63 is a compression spring.

[0030] The electromagnetic valve 2 is connected with 24V DC.

[0031] The positioner 4 is connected with a 4-20mA current signal.

[0032] The inlet of the gas source 7 is connected with a sealing pipe, and the thread inside the sealing pipe is RC3 / 4.

[0033] Specifically, when in use, a pipeline for conveying gas from the outside is docked with the sealing pipe, so that gas enters one end of the gas source 7. Open the filter pressure reducing valve 1 to allow the gas to move to one side of the pneumatic amplifier 3. At this time, control the electromagnetic valve 2 with an electrical signal of 24V DC to make the electromagnetic valve 2 energized, and allow the gas source to enter the cylinder 6 through the pneumatic amplifier 3. The opening degree of the electromagnetic valve 2 is adjusted and controlled according to the 4-20mA current signal input by the positioner 4 to realize the adjustment and control of the electromagnetic valve 2 and the filter pressure reducing valve 1;

[0034] When the electromagnetic valve 2 loses power, the pneumatic amplifier 3 exhausts quickly, and at this time the electromagnetic valve 2 closes quickly.

[0035] The solenoid valve 2 is directly installed in the control air circuit between the positioner 4 and the pneumatic amplifier 3. When the air circuit operates normally, the solenoid valve 2 is in the long-term energized state. Once the on-site electrical signal is lost or the solenoid valve 2 fails, the cylinder 6 will quickly exhaust air through the pneumatic amplifier 3, which is equivalent to the exhaust effect through the pneumatic control valve.

[0036] This utility model simplifies the air circuit, saves the user's cost, and does not affect the air circuit effect at the same time. Reducing the number of components in the air circuit can effectively reduce the fault points of the air circuit, making the on-site air circuit of the user more stable.

[0037] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An air path structure of an adjustable cylinder, characterized in that: include: Gas source (7); A filter pressure reducing valve (1), wherein the inlet of the filter pressure reducing valve (1) is connected to a gas source (7); A positioner (4), wherein an inlet of the positioner (4) is connected to an outlet of the filter pressure reducing valve (1); A solenoid valve (2), wherein the inlet of the solenoid valve (2) is connected to the outlet of the positioner (4); A pneumatic amplifier (3), wherein the inlet of the pneumatic amplifier (3) is connected to the outlet of the solenoid valve (2), and the inlet of the pneumatic amplifier (3) is connected to the outlet of the filter pressure reducing valve (1); An actuator (5), the inlet of which is connected to the outlet of the pneumatic amplifier (3), and the actuator (5) comprises a cylinder (6), a piston (61), a piston rod (62) and an elastic member (63).

2. The gas path structure of an adjustable cylinder according to claim 1, characterized in that: The piston (61) is connected to the inside of the cylinder (6), the piston rod (62) is connected to one end of the piston (61), and the elastic member (63) is arranged on one side of the piston rod (62).

3. The gas path structure of the adjustable cylinder according to claim 2, characterized in that: The elastic member (63) is a compression spring.

4. The gas path structure of the adjustable cylinder according to claim 1, characterized in that: The solenoid valve (2) is connected to 24V DC.

5. The gas path structure of an adjustable cylinder according to claim 1, characterized in that: The positioner (4) is connected to a 4-20 mA current signal.

6. The gas path structure of the adjustable cylinder according to claim 1, characterized in that: The inlet of the gas source (7) is connected with a sealing tube, and the thread inside the sealing tube is RC3 / 4.

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