Rainproof exhaust device for pneumatic diaphragm actuating mechanism of regulating valve

Abstract

The utility model discloses a rainproof exhaust device for a pneumatic diaphragm actuating mechanism of a regulating valve. The rainproof exhaust device comprises an exhaust pipe and a rainproof cap, wherein the exhaust pipe is arranged on a diaphragm cover of the pneumatic actuating mechanism; the rainproof cap is arranged at the top end of the exhaust pipe and is matched with the exhaust pipe; a circle of installation clamping groove is formed in the inner side of the rainproof cap, a circle of protrusion matched with the installation clamping groove is arranged on the outer side wall of the exhaust pipe, and when the rainproof cap is installed on the exhaust pipe, the protrusion is clamped into the installation clamping groove. The rainproof cap and the exhaust pipe are installed through cooperation of the installation clamping groove and the protrusion, and the purposes that ventilation is guaranteed, rainwater is prevented from entering the executing mechanism, the exhaust structure is optimized, the rainproof cap is rapidly replaced, and the service life of the executing mechanism is prolonged are achieved.

Description

Technical Field

[0001] The utility model relates to the production and application field of a pneumatic film actuator of a regulating valve, in particular to a rainproof exhaust device for the pneumatic film actuator of a regulating valve. Background Art

[0002] In the prior art, pneumatic diaphragm actuators, as important components of regulating valves, play a vital role in industrial process control. During the operation of pneumatic diaphragm actuators, the membrane chamber needs to frequently perform exhaust-intake processes.

[0003] Since the working environment of pneumatic diaphragm actuators is mostly in outdoor open places, once rainwater enters the interior, it will affect the actuator and shorten the working life of the actuator.

[0004] How to ensure that the exhaust and intake process of the actuator proceeds smoothly on rainy days without rainwater entering the membrane chamber is a technical problem that needs to be solved urgently at this stage.

[0005] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0006] In order to solve the above technical problems, the utility model proposes a rainproof exhaust device for a pneumatic diaphragm actuator of a regulating valve, so as to achieve the purpose of ensuring ventilation while preventing rainwater from entering the actuator and extending the service life of the actuator.

[0007] In order to achieve the above object, the technical solution of the utility model is as follows:

[0008] A rainproof exhaust device for a pneumatic diaphragm actuator of a regulating valve, comprising an exhaust pipe arranged on a diaphragm cover of the pneumatic actuator and a rainproof cap arranged at the top end of the exhaust pipe and matched with the exhaust pipe;

[0009] The inner side of the rain cap is provided with a circle of mounting grooves, and the outer side wall of the exhaust pipe is provided with a circle of protrusions matching with the mounting grooves. When the rain cap is installed on the exhaust pipe, the protrusions are inserted into the mounting grooves.

[0010] The utility model realizes the installation of the rainproof cap and the exhaust pipe through the cooperation of the installation slot and the protrusion, so as to achieve the purpose of preventing rainwater from entering the inside of the actuator while ensuring ventilation, optimizing the exhaust structure, quickly replacing the rainproof cap and extending the service life of the actuator.

[0011] Further preferably, a circle of mounting blocks is provided at the bottom of the exhaust pipe, and a sealing gasket is provided between the mounting blocks and the membrane cover of the pneumatic actuator.

[0012] Further preferably, the exhaust pipe is provided with a through hole, and the through hole is located below the protrusion;

[0013] An exhaust cavity is provided inside the rainproof cap, the exhaust cavity is communicated with the through hole, and the exhaust cavity is located below the installation slot.

[0014] The utility model has the following advantages:

[0015] 1. The utility model realizes the installation of the rain cap and the exhaust pipe by the cooperation of the installation slot and the protrusion, so as to ensure ventilation while preventing rainwater from entering the actuator, optimize the exhaust structure, quickly replace the rain cap and extend the service life of the actuator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0017] Figure 1 It is a structural schematic diagram of a rainproof exhaust device for a pneumatic diaphragm actuator of a regulating valve disclosed in an embodiment of the utility model;

[0018] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0019] The numbers and letters in the figure represent the corresponding component names:

[0020] 1. Pneumatic actuator membrane cover 2. Exhaust pipe 3. Rain cap 4. Mounting slot 5. Boss 6. Through hole

[0021] 7. Exhaust chamber 8. Mounting block 9. Sealing gasket. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] The utility model provides a rainproof exhaust device for a pneumatic diaphragm actuator of a regulating valve. The working principle of the device is to realize the installation of a rainproof cap and an exhaust pipe through the cooperation of an installation slot and a protrusion, so as to ensure ventilation while preventing rainwater from entering the actuator, optimize the exhaust structure, quickly replace the rainproof cap and extend the service life of the actuator.

[0024] The present invention is further described in detail below in conjunction with embodiments and specific implementation methods.

[0025] like Figure 1 As shown, a rainproof exhaust device for a pneumatic diaphragm actuator of a regulating valve comprises an exhaust pipe 2 arranged on a diaphragm cover 1 of the pneumatic actuator and a rainproof cap 3 arranged at the top end of the exhaust pipe and matched with the exhaust pipe;

[0026] A circle of mounting grooves 4 is provided on the inner side of the rain cap, and a circle of protrusions 5 matching with the mounting grooves is provided on the outer side wall of the exhaust pipe. When the rain cap is installed on the exhaust pipe, the protrusions are inserted into the mounting grooves.

[0027] The exhaust pipe is provided with a through hole 6, and the through hole is located below the protrusion; the interior of the rain cap is provided with an exhaust cavity 7, and the exhaust cavity is connected with the through hole, and the exhaust cavity is located below the installation slot.

[0028] A circle of mounting blocks 8 is provided at the bottom of the exhaust pipe, and a sealing gasket 9 is provided between the mounting blocks and the membrane cover of the pneumatic actuator.

[0029] The specific use steps of the utility model are as follows: Figure 1 and Figure 2 As shown, the rain cap 3 and the top of the exhaust pipe 2 are installed together through the mounting slot 4 and the protrusion 5, and the bottom of the exhaust pipe is connected to the pneumatic actuator membrane cover 1 through a thread.

[0030] When the pneumatic actuator membrane chamber is exhausted, the air flows through the exhaust pipe, flows out from the four through holes 6 set at the end of the exhaust pipe, enters the exhaust cavity 7 in the exhaust cap 3, and then is discharged into the external environment; when inhaling, the gas enters the exhaust pipe through the rainproof cap and then enters the inside of the actuator. Since there is a certain gap between the rainproof cap and the exhaust pipe and the lower end of the rainproof cap enters the exhaust cavity and flows into the exhaust pipe through the four through holes at the top of the exhaust pipe, rainwater cannot enter, thereby achieving the purpose of rain protection.

[0031] Through the above method, the utility model provides a rainproof exhaust device for a regulating valve pneumatic diaphragm actuator, which realizes the installation of a rainproof cap and an exhaust pipe by cooperating with the installation slot and the protrusion, thereby achieving the purpose of ensuring ventilation while preventing rainwater from entering the actuator, optimizing the exhaust structure, quickly replacing the rainproof cap and extending the service life of the actuator.

[0032] The above is only a preferred embodiment of a rainproof exhaust device for a regulating valve pneumatic diaphragm actuator disclosed in the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A rainproof exhaust device for a pneumatic diaphragm actuator of a regulating valve, characterized in that: It comprises an exhaust pipe arranged on a membrane cover of a pneumatic actuator and a rainproof cap arranged on the top end of the exhaust pipe and matched with the exhaust pipe; The inner side of the rain cap is provided with a circle of mounting grooves, and the outer side wall of the exhaust pipe is provided with a circle of protrusions matching with the mounting grooves. When the rain cap is installed on the exhaust pipe, the protrusions are inserted into the mounting grooves.

2. A rainproof exhaust device for a pneumatic diaphragm actuator of a regulating valve according to claim 1, characterized in that: A circle of mounting blocks is arranged at the bottom of the exhaust pipe, and a sealing gasket is arranged between the mounting blocks and the membrane cover of the pneumatic actuator.

3. A rainproof exhaust device for a pneumatic diaphragm actuator of a regulating valve according to claim 1, characterized in that: The exhaust pipe is provided with a through hole, and the through hole is located below the protrusion; An exhaust cavity is provided inside the rainproof cap, the exhaust cavity is communicated with the through hole, and the exhaust cavity is located below the installation slot.

Images