CN216618741U

CN216618741U - Pneumatic valve with opening and closing feedback function

Info

Publication number: CN216618741U
Application number: CN202123246324.8U
Authority: CN
Inventors: 曾庆丰
Original assignee: Chongqing Chuanqing Technology Development Co ltd
Current assignee: Chongqing Chuanqing Technology Development Co ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-05-27
Anticipated expiration: 2031-12-22

Abstract

The utility model discloses a pneumatic valve with an opening and closing feedback function, which comprises a valve seat and a valve body fixed on the valve seat, wherein a cylinder body is arranged in the valve body, and a cylinder is arranged in the cylinder body. A gas channel I is arranged in the cylinder body and communicated with a gas inlet in the valve seat; a gas channel II is arranged in the cylinder body and communicated with an exhaust port in the valve seat; a gas channel III is arranged in the cylinder body and communicated with a signal port in the valve seat, and the signal port is communicated with a feedback device. And high-pressure gas is input, so that the valve opening oil conveying process is completed. And a feedback device for outputting a feedback signal is arranged in the valve seat. When the piston moves to a certain stroke, the air source is transmitted to the feedback device through the internal channel, and a signal for opening the valve is output to the outside. The valve seat is also provided with a manual mechanism, and when an air source is unavailable, the valve can be quickly opened and closed in a short distance or a long distance. The utility model can output feedback signals according to the opening and closing states of the valve, and the feedback mode is divided into direct output of an air source, a pressure switch, a magnetic switch and the like.

Description

Pneumatic valve with opening and closing feedback function

Technical Field

The utility model belongs to the field of valves, and particularly relates to a pneumatic valve with an opening and closing feedback function.

Background

The pneumatic valve is a valve controlled pneumatically (emergency manual), and is installed in pipelines of light non-corrosive media such as various oils and the like to cut off and connect the media. The pipeline system is widely applied to oil filling vehicles, oil transportation vehicles, oil storage tanks and the like.

The pneumatic valve comprises a valve seat, a valve body, a valve core, a valve rod, a spring, a piston, a cylinder, a manual quick opening mechanism, a sealing element and the like. The pneumatic valve is installed in the pipeline system of the refueling truck and the oil transporting truck and mainly realizes sealing by spring force. When the pipeline medium needs to flow, the pressure air source pushes the piston to achieve the effect of a compression spring, the valve core is pushed away from the sealing surface, the valve is opened, and the pipeline is communicated to start to convey the medium. When the air source switch discharges the working air pressure in the air cylinder, the valve core returns to the sealing surface under the action of the spring force, and the valve is closed. When the air source is unexpected and can not work normally, the valve can be opened or closed by using the emergency manual mechanism.

The air inlet of the pneumatic valve is also provided with a fusible element, when the air inlet meets fire or high-temperature conditions, the fusible element melts due to high temperature, at the moment, the air inlet air passage is communicated with the atmosphere, the pneumatic valve is automatically closed, the occurrence of dangerous conditions is avoided, and the safety is guaranteed to be first.

A typical pneumatic valve for a piping system has the following features: 1. the weight is light: the main body is integrally formed by die casting of light aluminum alloy, so that the effective load of the oil truck can be effectively increased; 2. corrosion resistance: the surface is treated by a special process, so that the corrosion resistance and the wear resistance are very strong; 3. the valve has the advantages of flexible operation, reliable action, tight closing and no visible leakage; 4. the valve core is designed into a self-balancing structure and cannot be automatically opened by medium pressure in the pipeline; 5. the pneumatic, short-distance or long-distance quick opening and closing manual mechanism is arranged, so that the operation is convenient and quick; 6. the valve is designed into a single-acting cylinder structure with an air opening spring switch, and is in a normally closed state when no air source exists; 7. the cylinder is built-in, and design benefit reduces outside volume greatly, makes it more be fit for on-vehicle valve.

However, the conventional pneumatic valve does not have an opening and closing feedback function, and when a pipeline system fails, it is difficult to check whether the pneumatic valve is normally opened or closed, which is time-consuming and labor-consuming. In addition, the traditional pneumatic valve cannot be linked with other pneumatic valves in a pipeline system, and cannot be linked to be opened and the like.

Disclosure of Invention

In view of the above problems, the present invention is to provide a conventional pneumatic valve with an open/close feedback function.

In order to achieve the purpose, the utility model adopts the technical scheme that: the pneumatic valve with the opening and closing feedback function comprises a valve seat and a valve body fixed on the valve seat, wherein a cylinder body is arranged in the valve body, a cylinder is arranged in the cylinder body, and the cylinder cover covers the cylinder. A gas channel I is arranged in the cylinder body, one end of the gas channel I is communicated with a gas inlet in the valve seat, and the other end of the gas channel I is communicated with the cylinder to form a gas inlet channel; a gas channel II is arranged in the cylinder body, one end of the gas channel II is communicated with an exhaust port in the valve seat, and the other end of the gas channel II is communicated with the cylinder to form an exhaust channel; and a gas channel III is arranged in the cylinder body, one end of the gas channel III is communicated with a signal port in the valve seat, the other end of the gas channel III is communicated with the cylinder, and the signal port is communicated with a feedback device to form a gas feedback channel.

More specifically, the feedback is fixed to the valve seat.

In the above solution, further, a valve core, a valve rod, a spring and a piston are arranged in the cylinder body, a cylinder is arranged in the cylinder body, and the piston is arranged in the cylinder; one end of the valve rod is fixedly connected with the valve core, and the other end of the valve rod penetrates through the cylinder to be fixedly connected with the piston; the spring is sleeved on the valve rod and the cylinder, one end of the spring is abutted against the valve core, and the other end of the spring is abutted against the cylinder body.

Further, a main sealing ring and a positioning pin are arranged between the cylinder body and the valve seat, and the valve core and the main sealing ring are matched with each other to open or close the oil way. The locating pin that sets up between disk seat and the cylinder body prevents the mutual rotation, guarantees that each gas passage is corresponding.

The working principle of the utility model is as follows:

when the air inlet is communicated with an air source, air passes through the air channel I to push the piston, the piston drives the valve core through the valve rod, the compression spring rises, and the valve is opened. When the piston moves to a certain stroke, the gas is transmitted to the feedback device through the gas channel III, and the feedback device outputs a signal for opening the valve to the outside. The feedback device comprises an air source feedback device, a pressure switch feedback device and a magnetic switch feedback device. The air source feedback device is a universal straight-through terminal connector and is directly connected with an external air pipe; the pressure switch feedback device is a universal pressure switch and outputs an electric signal after being connected with an air source; the magnetic switch feedback device is a universal magnetic switch, and after the air source is connected, the air source pushes the magnet to be close to the magnetic switch to output an electric signal.

When the air inlet is disconnected with the air source, the valve core returns to the sealing surface under the action of the spring force, and the valve is closed. The feedback device no longer receives the gas source from the gas channel III and outputs a valve closing signal to the outside.

When the air source is unexpected and can not work normally, the valve can be opened or closed by using the emergency manual mechanism.

Compared with the prior art, the pneumatic valve has the advantages that the opening and closing feedback function is added to the traditional pneumatic valve, when a pipeline system breaks down, whether the pneumatic valve is normally opened or closed can be checked through the feedback signal, and time and labor are saved. In addition, the pneumatic valve can be linked with other pneumatic valves in a pipeline system, and linked opening and the like are achieved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic left side view of the structure of FIG. 1;

FIG. 3 is a schematic bottom view of the structure of FIG. 1;

in the figure: 1-a valve seat; 2-a camshaft; 3-a cam; 4-a positioning ring; 5-a valve body; 6-cylinder body; 7-a cylinder cover; 8-valve core; 9-a valve stem; 10-a spring; 11-a piston; 12-a primary seal ring; 13-a locating pin; 14-a cylinder; 15-gas channel i; 16-an air inlet; 17-gas channel ii; 18-an exhaust port; 19-gas channel iii; 20-a signal port; 21-a feedback device; 22-connecting hole I; 23-connecting hole II.

Detailed Description

It should be understood that the embodiments of the present invention are only for illustrating the present invention and not for limiting the present invention, and various substitutions and modifications made according to the common knowledge of the technical field and the conventional means without departing from the technical idea of the present invention should be included in the scope of the present invention.

Referring to fig. 1, 2 and 3, the pneumatic valve with an open/close feedback function in the present embodiment includes a valve seat 1, a valve body 5 fixed on the valve seat 1, a cylinder 6, a cylinder cover 7, and a valve core 8, a valve rod 9, a spring 10, and a piston 11 arranged in the cylinder 6; a main sealing ring 12 and a positioning pin 13 are arranged between the cylinder body 6 and the valve seat 1, and the valve core 8 and the main sealing ring 12 are matched with each other to open or close an oil way; a cylinder 14 is arranged in the cylinder body 6, and the piston 11 is arranged in the cylinder 14; one end of the valve rod 9 is fixedly connected with the valve core 8, and the other end of the valve rod penetrates through the cylinder 14 to be fixedly connected with the piston 11; the spring 10 is sleeved on the valve rod 9 and the air cylinder 14, one end of the spring is propped against the valve core 8, and the other end of the spring is propped against the cylinder body 6; the cylinder cover 7 covers the cylinder 14. A gas channel I15 is arranged in the cylinder body 6, one end of the gas channel I15 is communicated with a gas inlet 16 in the valve seat 1, and the other end of the gas channel I15 is communicated with a cylinder 14 to form a gas inlet channel; a gas channel II 17 is arranged in the cylinder body 6, one end of the gas channel II 17 is communicated with an exhaust port 18 in the valve seat 1, and the other end of the gas channel II 17 is communicated with the cylinder 14 to form an exhaust channel; a gas channel III 19 is arranged in the cylinder body 6, one end of the gas channel III 19 is communicated with a signal port 20 in the valve seat 1, the other end of the gas channel III is communicated with the cylinder 14, the signal port 20 is communicated with a feedback device 21 to form a gas feedback channel, and the feedback device 21 is fixed on the valve seat 1.

The feedback device 21 is divided into an air source feedback device, a pressure switch feedback device and a magnetic switch feedback device. The air source feedback device is a universal straight-through terminal connector and is directly connected with an external air pipe; the pressure switch feedback device is a universal pressure switch and outputs an electric signal after being connected with an air source; the magnetic switch feedback device is a universal magnetic switch, and after the air source is connected, the air source pushes the magnet to be close to the magnetic switch to output an electric signal.

The primary seal ring 12 may be made of rubber or other materials suitable for use as a seal ring, and other seal rings may be made of rubber. The cylinder 14 is integrated with the cylinder body 6.

Gas passage I, gas passage II, gas passage III all can be seted up on disk seat and cylinder body in this embodiment, and the control of being convenient for makes the structure simpler.

The valve seat 1 is further provided with a cam shaft 2, and the cam shaft 2 is provided with a cam 3 capable of jacking a valve core 8 and a positioning ring 4 for axially positioning the cam shaft 2. Under the condition of air source and air circuit faults, when the valve cannot be pneumatically normally opened, the oil passage between the valve core and the main sealing ring can be opened by manually controlling the camshaft, and emergency oil transportation is completed.

The outer end of the valve seat 1 is provided with a connecting hole I22 for connecting an external pipeline, and the outer end of the valve body 5 is provided with a connecting hole II 23 for connecting the external pipeline. Through setting up the connecting hole, make the pneumatic valve more convenient when using.

A fusible element is arranged at the air inlet 16. Through setting up the fusible component, when meetting the conflagration during the operation, the fusible component melts fast, and the high-pressure gas who is used for opening the valve at this moment lets out, makes the valve resume the normality promptly and close the state fast.

Claims

1. Pneumatic valve with switching feedback function, including disk seat (1), fix valve body (5) on disk seat (1), be provided with cylinder body (6) in valve body (5), have cylinder (14) in cylinder body (6), cylinder cap (7) lid fits on cylinder (14), its characterized in that: a gas channel I (15) is arranged in the cylinder body (6), one end of the gas channel I (15) is communicated with a gas inlet (16) in the valve seat (1), and the other end of the gas channel I (15) is communicated with a cylinder (14) to form a gas inlet channel; a gas channel II (17) is arranged in the cylinder body (6), one end of the gas channel II (17) is communicated with an exhaust port (18) in the valve seat (1), and the other end of the gas channel II (17) is communicated with the cylinder (14) to form an exhaust channel; a gas channel III (19) is arranged in the cylinder body (6), one end of the gas channel III (19) is communicated with a signal port (20) in the valve seat (1), the other end of the gas channel III (19) is communicated with the cylinder (14), and the signal port (20) is communicated with a feedback device (21) to form a gas feedback channel.

2. A pneumatic valve with on-off feedback function as in claim 1, wherein: the feedback device (21) is fixed on the valve seat (1).

3. A pneumatic valve having an open-close feedback function according to claim 1 or 2, characterized in that: a valve core (8), a valve rod (9), a spring (10) and a piston (11) are arranged in the cylinder body (6), a cylinder (14) is arranged in the cylinder body (6), and the piston (11) is arranged in the cylinder (14); one end of the valve rod (9) is fixedly connected with the valve core (8), and the other end of the valve rod penetrates through the cylinder (14) to be fixedly connected with the piston (11); the spring (10) is sleeved on the valve rod (9) and the air cylinder (14), one end of the spring is propped against the valve core (8), and the other end of the spring is propped against the cylinder body (6).

4. A pneumatic valve with on-off feedback function as in claim 3, wherein: a main sealing ring (12) and a positioning pin (13) are arranged between the cylinder body (6) and the valve seat (1), and the valve core (8) and the main sealing ring (12) are matched with each other to open or close an oil way.

5. A pneumatic valve with open-close feedback function according to claim 1, 2 or 4, characterized in that: the feedback device (21) is an air source feedback device, a pressure switch feedback device or a magnetic switch feedback device.

6. A pneumatic valve with on-off feedback function as in claim 5, wherein: the valve seat (1) is further provided with a camshaft (2), and the camshaft (2) is provided with a cam (3) capable of jacking the valve core (8) and a positioning ring (4) for axially positioning the camshaft (2).

7. A pneumatic valve with on-off feedback function as in claim 6, wherein: the outer end of the valve seat (1) is provided with a connecting hole I (22) connected with an external pipeline, and the outer end of the valve body (5) is provided with a connecting hole II (23) connected with the external pipeline.

8. A pneumatic valve with on-off feedback function as in claim 7, wherein: a fusible element is arranged at the air inlet (16).