Automatic valve packing leakage and fracture prevention mechanism

Abstract

The utility model relates to the technical field of automatic valves, in particular to an automatic valve packing leakage and fracture prevention mechanism. According to the technical scheme, the device comprises a liquid conveying pipe, a connecting cover and a liquid discharging pipe, a valve body is arranged in the liquid conveying pipe, a communicating pipe is arranged on the outer wall of the upper end of the valve body, the connecting cover is arranged on the outer wall of the upper end of the communicating pipe, a pneumatic executing device is arranged on the outer wall of the upper end of the connecting cover, and the liquid discharging pipe is installed on the outer wall of one side of the connecting cover in an inserted mode; by arranging the liquid inlet pipe, the liquid discharge pipe and the connecting cover, the effect of shielding the valve body is achieved, medium leakage is avoided, the cleanliness of the working environment is guaranteed, the residual quantity of media in the connecting cover is reduced, and workers can conveniently disassemble and maintain the connecting cover.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic valves, in particular to an automatic valve packing anti-leakage and fracture mechanism. Background Art

[0002] The pneumatic control valve uses compressed gas as the power source, the cylinder as the actuator, and the valve positioner, converter, solenoid valve, position-holding valve, gas storage tank, gas filter and other accessories to drive the valve to achieve switch quantity or proportional adjustment. The stuffing box is mainly composed of stuffing, water seal ring, stuffing cylinder, stuffing gland, and water seal pipe. The main function of the stuffing box is to close the gap between the pump casing and the pump shaft, so as to prevent the water flow in the pump from flowing to the outside and the outside air from entering the pump, and always maintain the vacuum in the water pump! When the pump shaft and the stuffing generate heat through friction, the water seal pipe is used to hold the water into the water seal ring to cool the stuffing.

[0003] Patent announcement number CN210265883U discloses a pneumatic regulating valve, including a valve body, a liquid inlet and a liquid outlet opened at the left and right ends of the valve body, a valve cover arranged on the valve body, and a pneumatic actuator connected to the valve cover through a bracket, a valve stem is arranged in the valve body, the valve stem passes through the valve cover and is connected to the pneumatic actuator, a valve core is arranged at the end of the valve stem, a valve seat is arranged in the valve body, a flow channel is arranged in the valve seat, a mounting sleeve is arranged on the valve core, a sealing shaft adapted to the flow channel is arranged on the mounting sleeve, and when the valve core moves downward to seal the valve seat, the sealing shaft is inserted into the flow channel to seal the flow channel. The utility model has a reasonable structural design, a long service life, and good sealing performance.

[0004] Although the prior art CN210265883U has many benefits during use, it still has the following problems: it lacks a shielding structure for the valve stem, so that when the stuffing box is damaged and leaks, the medium inside the infusion tube will leak out through the gap, causing pollution to the working environment and affecting the safety of the valve. Utility Model Content

[0005] The utility model aims to provide an automatic valve packing anti-leakage and anti-fracture mechanism to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic valve packing anti-leakage and anti-fracture mechanism, comprising an infusion tube, a connecting cover and a discharge tube, a valve body is arranged inside the infusion tube, a connecting tube is arranged on the upper outer wall of the valve body, a connecting cover is arranged on the upper outer wall of the connecting tube, a pneumatic actuator is arranged on the upper outer wall of the connecting cover, and a discharge tube is plugged and installed on the outer wall of one side of the connecting cover.

[0007] When using an automatic valve packing anti-leakage and fracture mechanism in the technical solution, the pneumatic actuator drives the valve stem to move vertically, thereby controlling the on and off of the valve body, and when the valve body leaks, the connecting cover covers the valve body to avoid medium leakage, thereby ensuring the cleanliness of the working environment, and the staff discharges the medium inside the connecting cover through an external power pump, a drain pipe and an extension pipe, and the staff inputs cleaning liquid into the connecting cover through an external power pump and a liquid inlet pipe, and the waste liquid is then discharged through the drain pipe, thereby achieving the purpose of cleaning the inside of the connecting cover.

[0008] Preferably, the connecting pipe is connected to the connecting cover by a flange, and the connecting cover is connected to the pneumatic actuator by a flange. The connecting pipe, the connecting cover and the pneumatic actuator are sealed by the flange.

[0009] Preferably, a valve stem is provided on one side of the outer wall of the lower end of the pneumatic actuator, and the valve stem is connected to the inside of the valve body. The pneumatic actuator can drive the valve stem to move vertically, thereby controlling the on and off of the valve body.

[0010] Preferably, the connection cover is designed in a rectangular shape, and a detection structure is installed on one side of the inner wall of the connection cover. The detection structure can detect the moving distance of the valve stem.

[0011] Preferably, a liquid inlet pipe is inserted and installed on the outer wall of the connection cover away from the liquid discharge pipe, and valves are arranged on the outer walls of the liquid inlet pipe and the liquid discharge pipe. Cleaning liquid enters the connection cover through the liquid inlet pipe to clean the medium inside the connection cover.

[0012] Preferably, an extension tube is plugged and installed on the outer wall of one side of the liquid discharge pipe, and the extension tube is designed in a curved shape. The medium inside the connection cover is discharged through the extension tube and the liquid discharge pipe.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model achieves the effect of shielding the valve body by arranging the liquid inlet pipe, the liquid discharge pipe and the connecting cover, the pneumatic actuator drives the valve stem to move vertically, thereby controlling the on and off of the valve body, and when the valve body leaks, the connecting cover shields the valve body to avoid medium leakage, thereby ensuring the cleanliness of the working environment, and the staff discharges the medium inside the connecting cover through the external power pump, the liquid discharge pipe and the extension pipe, and the staff inputs cleaning liquid into the connecting cover through the external power pump and the liquid inlet pipe, and the waste liquid is then discharged through the liquid discharge pipe, thereby achieving the purpose of cleaning the inside of the connecting cover, reducing the residual amount of the medium inside the connecting cover, and facilitating the staff to disassemble and maintain the connecting cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the appearance of the infusion tube structure of the utility model;

[0015] Figure 2 It is a cross-sectional schematic diagram of the connecting pipe structure of the utility model;

[0016] Figure 3 It is an enlarged schematic diagram of the connection cover structure of the utility model.

[0017] In the figure: 1. infusion tube; 11. valve body; 12. connecting tube; 2. connecting cover; 21. pneumatic actuator; 22. valve stem; 23. detection structure; 24. liquid inlet pipe; 25. liquid discharge pipe; 26. extension pipe; 27. valve. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-Figure 3 , the utility model provides two embodiments:

[0020] Embodiment 1: An automatic valve packing anti-leakage and anti-fracture mechanism comprises an infusion tube 1, a connecting cover 2 and a drainage tube 25, wherein a valve body 11 is arranged inside the infusion tube 1, a connecting tube 12 is arranged on the outer wall of the upper end of the valve body 11, a connecting cover 2 is arranged on the outer wall of the upper end of the connecting tube 12, a pneumatic actuator 21 is arranged on the outer wall of the upper end of the connecting cover 2, and a drainage tube 25 is installed on the outer wall of one side of the connecting cover 2.

[0021] The connecting pipe 12 is connected to the connecting cover 2 by a flange, and the connecting cover 2 is connected to the pneumatic actuator 21 by a flange. The connecting pipe 12, the connecting cover 2 and the pneumatic actuator 21 are sealed by the flange.

[0022] A valve stem 22 is disposed on one side of the outer wall of the lower end of the pneumatic actuator 21, and the valve stem 22 is connected to the inside of the valve body 11. The pneumatic actuator 21 can drive the valve stem 22 to move vertically, thereby controlling the on and off of the valve body 11.

[0023] The connection cover 2 is designed in a rectangular shape, and a detection structure 23 is installed on one side of the inner wall of the connection cover 2. The detection structure 23 can detect the moving distance of the valve stem 22. The pneumatic actuator 21 drives the valve stem 22 to move vertically, thereby controlling the on and off of the valve body 11. When the valve body 11 leaks, the connection cover 2 shields the valve body 11 to avoid medium leakage and ensure the cleanliness of the working environment.

[0024] Embodiment 2: An automatic valve packing anti-leakage and anti-fracture mechanism comprises an infusion tube 1, a connecting cover 2 and a drainage tube 25, wherein a valve body 11 is arranged inside the infusion tube 1, a connecting tube 12 is arranged on the upper outer wall of the valve body 11, a connecting cover 2 is arranged on the upper outer wall of the connecting tube 12, a pneumatic actuator 21 is arranged on the upper outer wall of the connecting cover 2, and a drainage tube 25 is plugged and installed on the outer wall of one side of the connecting cover 2.

[0025] The connecting pipe 12 is connected to the connecting cover 2 by a flange, and the connecting cover 2 is connected to the pneumatic actuator 21 by a flange. The connecting pipe 12, the connecting cover 2 and the pneumatic actuator 21 are sealed by the flange.

[0026] A valve stem 22 is disposed on one side of the outer wall of the lower end of the pneumatic actuator 21, and the valve stem 22 is connected to the inside of the valve body 11. The pneumatic actuator 21 can drive the valve stem 22 to move vertically, thereby controlling the on and off of the valve body 11.

[0027] The connection cover 2 is designed in a rectangular shape, and a detection structure 23 is installed on one side of the inner wall of the connection cover 2. The detection structure 23 can detect the moving distance of the valve stem 22.

[0028] The outer wall of the connection cover 2 facing away from the discharge pipe 25 is plugged with a liquid inlet pipe 24, and the outer walls of the liquid inlet pipe 24 and the discharge pipe 25 are both provided with valves 27. The cleaning liquid enters the connection cover 2 through the liquid inlet pipe 24 to clean the medium inside the connection cover 2.

[0029] An extension tube 26 is installed on the outer wall of one side of the drain pipe 25, and the extension tube 26 is designed in a curved shape. The medium inside the connection cover 2 is discharged through the extension tube 26 and the drain pipe 25, and the pneumatic actuator 21 drives the valve stem 22 to move vertically, thereby controlling the on and off of the valve body 11, and when the valve body 11 leaks, the connection cover 2 shields the valve body 11 to avoid medium leakage and ensure the cleanliness of the working environment, and the staff discharges the medium inside the connection cover 2 through the external power pump, the drain pipe 25 and the extension tube 26, and the staff inputs cleaning liquid into the connection cover 2 through the external power pump and the liquid inlet pipe 24, and the waste liquid is also discharged through the drain pipe 25, so as to achieve the purpose of cleaning the inside of the connection cover 2, reduce the residual amount of the medium inside the connection cover 2, and facilitate the staff to disassemble and maintain the connection cover 2.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An automatic valve packing anti-leakage and anti-fracture mechanism, comprising a liquid infusion tube (1), a connection cover (2) and a liquid discharge tube (25), characterized in that: A valve body (11) is arranged inside the infusion tube (1), a connecting pipe (12) is arranged on the upper outer wall of the valve body (11), a connecting cover (2) is arranged on the upper outer wall of the connecting pipe (12), a pneumatic actuator (21) is arranged on the upper outer wall of the connecting cover (2), and a liquid discharge pipe (25) is plugged and installed on the outer wall of one side of the connecting cover (2).

2. The automatic valve packing anti-leakage and anti-fracture mechanism according to claim 1, characterized in that: The connecting pipe (12) and the connecting cover (2) are connected by a flange, and the connecting cover (2) and the pneumatic actuator (21) are connected by a flange.

3. The automatic valve packing anti-leakage and anti-fracture mechanism according to claim 1, characterized in that: A valve stem (22) is provided on one side of the outer wall of the lower end of the pneumatic actuator (21), and the valve stem (22) is connected to the inside of the valve body (11).

4. The automatic valve packing anti-leakage and anti-fracture mechanism according to claim 1, characterized in that: The connection cover (2) is designed in a rectangular shape, and a detection structure (23) is installed on one side of the inner wall of the connection cover (2).

5. The automatic valve packing anti-leakage and anti-fracture mechanism according to claim 1, characterized in that: A liquid inlet pipe (24) is inserted and installed on the outer wall of the connection cover (2) on the side facing away from the liquid discharge pipe (25), and valves (27) are provided on the outer walls of one side of the liquid inlet pipe (24) and the liquid discharge pipe (25).

6. The automatic valve packing anti-leakage and anti-fracture mechanism according to claim 1, characterized in that: An extension tube (26) is plugged and installed on the outer wall of one side of the liquid discharge tube (25), and the extension tube (26) is designed in a curved shape.

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