Pneumatic stop valve with air pressure detection function

Abstract

The utility model provides a pneumatic shut-off valve with air pressure detection, which comprises a pneumatic shut-off valve body with a valve cavity, an air inlet flow channel and an air outlet flow channel, an integrally formed column casing part is arranged at the neck part of a flange part at one end, and a closed pipeline joint is arranged at one end of the column casing part. A pressure display panel and an emergency control button are mounted at two connectors of the closed pipeline connector, a detection connecting rod communicated with the pressure display panel is arranged in the column casing part, and a pressure sensor is arranged at one end of the detection connecting rod and located at an air outlet flow channel of the pneumatic cut-off valve body. The outer surface of the detection connecting rod is connected with a rubber filling plug in a sleeving manner, and the rubber filling plug is filled in the inner wall of the column barrel part; data information detected by the pressure sensor is transmitted to the pressure display panel, so that good pressure detection is achieved, air pressure detection is effectively achieved in the use stage, an emergency control button is achieved in an emergency state, and potential safety hazards are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of pneumatic shut-off valve technology, and relates to a pneumatic shut-off valve with air pressure detection. Background Technology

[0002] A pneumatic shut-off valve, also known as a pneumatic gate valve, is a type of actuator in an automation system. It consists of a multi-spring pneumatic diaphragm actuator or a floating piston actuator and a regulating valve. It receives signals from regulating instruments to control the shut-off, connection, or switching of fluids in process pipelines. It features simple structure, sensitive response, and reliable operation.

[0003] Patent application publication number CN212900026U discloses a pneumatic shut-off valve, comprising: a valve body, a valve disc, a valve stem, and a shut-off actuator; the valve body has an inlet channel, an outlet channel, and a valve port disposed between the inlet channel and the outlet channel; the valve disc is disposed in the inlet channel, corresponding to the valve port; the valve stem passes through a mounting hole on the valve body and partially enters the inlet channel to be fixedly connected to the valve disc; the mounting hole coincides with the axis of the valve port; the shut-off actuator is fixedly installed on the side of the valve body where the mounting hole is located. When this pneumatic shut-off valve is installed, it is installed on the side of a horizontal gas pipeline, and the axis of the valve stem is at the same horizontal position as the gas pipeline, thus preventing moisture in the gas pipeline from freezing at the valve port when the winter temperature is below zero, which would cause incomplete closure and makes it practical.

[0004] The disadvantages of the pneumatic shut-off valve disclosed above are that it cannot effectively detect air pressure during use, cannot be controlled in emergency situations, and poses potential safety hazards. Therefore, we have designed a pneumatic shut-off valve with air pressure detection. Summary of the Invention

[0005] The purpose of this invention is to provide a pneumatic shut-off valve with air pressure detection to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved through the following technical solution: A pneumatic shut-off valve with air pressure detection includes a pneumatic shut-off valve body having a valve cavity and an inlet and outlet air passage. Flanges are welded to both ends of the pneumatic shut-off valve body. An integrally formed cylindrical part is provided at the neck of one end of the flange. A closed pipe joint is installed at one end of the cylindrical part. A pressure display panel and an emergency control button are installed at the two interfaces of the closed pipe joint. A detection rod connected to the pressure display panel is provided inside the cylindrical part. A pressure sensor is provided at one end of the detection rod and the pressure sensor is located at the outlet air passage of the pneumatic shut-off valve body. A rubber filler is sleeved and connected to the outer surface of the detection rod. The rubber filler fills the inner wall of the cylindrical part.

[0007] The pressure display panel is a digital pressure gauge.

[0008] In the aforementioned pneumatic shut-off valve with air pressure detection, a sealing connection seat is installed at the top of the pneumatic shut-off valve body. An adjusting valve stem is installed inside the sealing connection seat. One end of the adjusting valve stem extends into the valve cavity of the pneumatic shut-off valve body and is equipped with a valve core element that controls the opening and closing of the valve cavity. This design allows for the adjustment of the valve core element's operation via the adjusting valve stem, while also enabling better opening and closing of the valve cavity of the pneumatic shut-off valve body.

[0009] The aforementioned pneumatic shut-off valve with air pressure detection also includes a cylinder body. The output shaft of the cylinder body is connected to a regulating valve rod, and a stroke limit ring is installed at the end of the regulating valve rod. This design allows the regulating valve rod to be controlled by the cylinder body, eliminating the need for manual operation.

[0010] In the aforementioned pneumatic shut-off valve with air pressure detection, a cylinder mounting bracket is provided at the bottom end of the cylinder body, and a support bracket is installed at one end of the cylinder mounting bracket. The support bracket is connected to a sealing connection seat. This arrangement aims to improve the stability of the cylinder body installation through the cylinder mounting bracket and the support bracket, ensuring good stability during operation.

[0011] In the aforementioned pneumatic shut-off valve with air pressure detection, a strip-shaped groove is provided on the side of the support frame, and an adjusting limit block is installed inside the strip-shaped groove. A limit rod is installed at one end of the adjusting limit block. The purpose of this arrangement is to limit the stroke of the shut-off valve by manipulating the limit rod to contact the stroke limit ring, thus ensuring good stability.

[0012] Compared with the prior art, the advantages of this pneumatic shut-off valve with air pressure detection are as follows: an integrally formed cylindrical part is set at the neck of the flange at one end. The cylindrical part is equipped with a pressure display panel and an emergency control button through a closed pipe joint. One end of the detection rod is connected to a pressure sensor in the air outlet channel. The data information detected by the pressure sensor is transmitted to the pressure display panel. This provides good pressure detection and effectively realizes air pressure detection during use. In an emergency, it acts as an emergency control button, reducing safety hazards. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of a pneumatic shut-off valve with air pressure detection according to this utility model.

[0014] Figure 2 This is a three-dimensional structural diagram of a pressure display panel for a pneumatic shut-off valve with air pressure detection according to this utility model.

[0015] Figure 3This is a three-dimensional structural diagram of a pneumatic shut-off valve cylinder mounting bracket and support frame with air pressure detection according to this utility model.

[0016] Figure 4 This is a three-dimensional structural schematic diagram of a digital display pressure gauge with pneumatic shut-off valve and pressure detection according to the present invention.

[0017] Figure 5 This is a three-dimensional structural diagram of a pneumatic shut-off valve body with air pressure detection according to the present invention.

[0018] In the diagram, 1. Pneumatic shut-off valve body; 2. Cylinder body; 3. Cylinder mounting bracket; 4. Support bracket; 5. Adjusting valve stem; 6. Sealing connection seat; 7. Pressure display panel; 8. Valve core; 9. Limit rod; 10. Stroke limit ring; 11. Adjusting limit block; 12. Strip groove; 13. Enclosed pipe joint; 14. Column section; 15. Detection connecting rod; 16. Pressure sensor; 17. Rubber filler plug; 18. Emergency control button; 19. Digital display pressure gauge. Detailed Implementation

[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model discloses a pneumatic shut-off valve with air pressure detection.

[0021] Example 1: The pneumatic shut-off valve includes a pneumatic shut-off valve body 1 with a valve cavity, an inlet air passage, and an outlet air passage. Flanges are welded to both ends of the pneumatic shut-off valve body 1. An integrally formed cylindrical part 14 is provided at the neck of one of the flanges. A closed pipe joint 13 is installed at one end of the cylindrical part 14. A pressure display panel 7 and an emergency control button 18 are installed at the two interfaces of the closed pipe joint 13. A detection rod 15 connected to the pressure display panel 7 is provided inside the cylindrical part 14. A pressure sensor 16 is provided at one end of the detection rod 15 and the pressure sensor 16 is located at the outlet air passage of the pneumatic shut-off valve body 1. A rubber filler plug 17 is sleeved and connected to the outer surface of the detection rod 15 and fills the inner wall of the cylindrical part 14.

[0022] Example 2: Based on Example 1, to reduce the design of the electrical structure, the pressure display panel 7 is set as a digital pressure gauge 19. The number of pressure sensors 16 and detection rods 15 is reduced, and the number of rubber filler plugs 17 is also reduced accordingly. The specific solution is as follows:

[0023] The pneumatic shut-off valve includes a pneumatic shut-off valve body 1 with a valve cavity, an inlet air passage, and an outlet air passage. Flanges are welded to both ends of the pneumatic shut-off valve body 1. An integrally formed cylindrical part 14 is provided at the neck of one of the flanges. A closed pipe joint 13 is installed at one end of the cylindrical part 14. A digital display pressure gauge 19 and an emergency control button 18 are installed at the two interfaces of the closed pipe joint 13.

[0024] Example 3: The pneumatic shut-off valve includes a pneumatic shut-off valve body 1 with a valve cavity, an inlet air passage, and an outlet air passage. Flanges are welded to both ends of the pneumatic shut-off valve body 1. A sealing connection seat 6 is installed at the top of the pneumatic shut-off valve body 1. An adjusting valve rod 5 is installed inside the sealing connection seat 6. One end of the adjusting valve rod 5 extends into the valve cavity of the pneumatic shut-off valve body 1 and is provided with a valve core 8 for controlling the opening and closing of the valve cavity. The valve body 2 also includes a cylinder body 2. The output shaft of the cylinder body 2 is connected to the adjusting valve rod 5. A stroke limit ring 10 is installed at the end of the adjusting valve rod 5. A cylinder mounting bracket 3 is provided at the bottom of the cylinder body 2. A support bracket 4 is installed at one end of the cylinder mounting bracket 3. The support bracket 4 is connected to the sealing connection seat 6. A strip groove 12 is opened on the side of the support bracket 4. An adjusting limit block 11 is installed inside the strip groove 12. A limit rod 9 is installed at one end of the adjusting limit block 11.

[0025] This solution not only effectively controls the opening and closing of the shut-off valve chamber pneumatically, but also uses the limit rod 9 to contact the stroke limit ring 10, thereby limiting the stroke of the shut-off valve and ensuring good stability.

[0026] Example 4: The pneumatic shut-off valve includes a pneumatic shut-off valve body 1 with a valve cavity, an inlet air passage, and an outlet air passage. Flanges are welded to both ends of the pneumatic shut-off valve body 1. A sealing connection seat 6 is installed at the top of the pneumatic shut-off valve body 1. An adjusting valve rod 5 is installed inside the sealing connection seat 6. One end of the adjusting valve rod 5 extends into the valve cavity of the pneumatic shut-off valve body 1 and is provided with a valve core 8 for controlling the opening and closing of the valve cavity. The valve also includes a cylinder body 2. The output shaft of the cylinder body 2 is connected to the adjusting valve rod 5. A cylinder mounting bracket 3 is provided at the bottom of the cylinder body 2. A support bracket 4 is installed at one end of the cylinder mounting bracket 3. The support bracket 4 is connected to the sealing connection seat 6.

[0027] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A pneumatic shut-off valve with air pressure detection, comprising a pneumatic shut-off valve body (1) having a valve cavity, an inlet air passage, and an outlet air passage, wherein flange portions are welded to both ends of the pneumatic shut-off valve body (1), characterized in that, One end of the flange neck is provided with an integrally formed cylindrical part (14). One end of the cylindrical part (14) is equipped with a closed pipe joint (13). The two interfaces of the closed pipe joint (13) are equipped with a pressure display panel (7) and an emergency control button (18). The inside of the cylindrical part (14) is provided with a detection rod (15) that connects to the pressure display panel (7). One end of the detection rod (15) is provided with a pressure sensor (16) and the pressure sensor (16) is located at the outlet air passage of the pneumatic shut-off valve body (1). The outer surface of the detection rod (15) is fitted with a rubber filler plug (17) and the rubber filler plug (17) fills the inner wall of the cylindrical part (14).

2. A pneumatic shut-off valve with air pressure detection according to claim 1, characterized in that, The pressure display panel (7) is a digital barometer (19).

3. A pneumatic shut-off valve with air pressure detection according to claim 1, characterized in that, A sealing connection seat (6) is installed at the top of the pneumatic shut-off valve body (1). An adjusting valve rod (5) is installed inside the sealing connection seat (6). One end of the adjusting valve rod (5) extends into the valve cavity of the pneumatic shut-off valve body (1) and is provided with a valve core (8) for controlling the opening and closing of the valve cavity.

4. A pneumatic shut-off valve with air pressure detection according to claim 3, characterized in that, It also includes a cylinder body (2), the output shaft of which is connected to the regulating valve rod (5), and the end of the regulating valve rod (5) is equipped with a stroke limit ring (10).

5. A pneumatic shut-off valve with air pressure detection according to claim 4, characterized in that, The cylinder body (2) is provided with a cylinder mounting bracket (3) at the bottom end, and a support bracket (4) is installed at one end of the cylinder mounting bracket (3). The support bracket (4) is connected to the sealing connection seat (6).

6. A pneumatic shut-off valve with air pressure detection according to claim 5, characterized in that, The support frame (4) has a strip groove (12) on its side. An adjustment limit block (11) is installed inside the strip groove (12). A limit rod (9) is installed at one end of the adjustment limit block (11).

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