Pressure gauge connector capable of automatically cutting off

Abstract

The utility model relates to a pressure gauge connector capable of automatically cutting off, which comprises a valve body, a fixing plate is fixedly mounted in the valve body, a convex through hole is formed in the fixing plate, and a sealing ball is arranged in the through hole; a connecting pipeline is fixedly installed at the bottom of the valve body, a ball support is connected to the inner wall of the connecting pipeline in a threaded and inserted mode, and the inner diameter of the ball support is smaller than the diameter of the sealing ball. The sealing device has the advantages that the sealing ball is suspended in the through hole due to the density of the sealing ball, at the moment, a medium flows normally, when the interior of a pipeline is damaged, the medium leaks, the pressure of the medium above the sealing ball is lowered, the sealing ball moves from bottom to top under the action of pressure change, the top of the through hole is sealed, and the service life of the sealing ball is prolonged. And the phenomenon of serious leakage of the medium in the pipeline is prevented, and the hidden danger of loss or safety accidents caused by medium leakage is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure gauge joints, in particular to a pressure gauge joint which can automatically cut off. Background Art

[0002] The pressure gauge connector is used to connect the device or pipeline of the measured medium with the pressure gauge. It can ensure a good connection between the measured pipeline and the pressure gauge, so that the pressure signal can be accurately transmitted to the pressure gauge.

[0003] Since the pressure gauge and the joint are directly connected, when the glass in the pressure gauge is broken or damaged due to overpressure or other reasons, the medium flowing in the pipe is likely to leak from the pressure gauge. When no one at the work site discovers the damage of the pressure gauge, it is likely to cause huge economic losses and serious safety hazards. Utility Model Content

[0004] The utility model aims to provide a pressure gauge connector which can automatically cut off the pressure gauge to solve the above problems existing in the prior art.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A pressure gauge connector capable of automatically cutting off comprises a valve body, a fixing plate is fixedly installed inside the valve body, a convex through hole is opened inside the fixing plate, and a sealing ball is arranged inside the through hole;

[0007] A connecting pipe is fixedly installed at the bottom of the valve body, a ball holder is threadedly inserted on the inner wall of the connecting pipe, and the inner diameter of the ball holder is smaller than the diameter of the sealing ball;

[0008] A communicating pipe is connected to one side of the valve body and is located below the fixed plate, and a pressure relief assembly is arranged inside the communicating pipe; the pressure relief assembly includes a discharge hole opened on one side of the communicating pipe, and a plug rod is arranged inside the communicating pipe, one end of the plug rod extends to the inside of the valve body, a first sealing ring in contact with the top of the discharge hole is fixedly sleeved on the surface of the plug rod, and a rotating handle is fixedly installed on the other end of the plug rod.

[0009] The beneficial effect of the utility model is that the sealing ball is suspended in the through hole due to its own density. At this time, the medium flows normally. When damage occurs in the pipeline, the medium leaks, causing the medium pressure above the sealing ball to decrease. The sealing ball moves from bottom to top under the action of pressure change, thereby sealing the top of the through hole, preventing serious leakage of the medium in the pipeline, and solving the hidden dangers of losses or safety accidents caused by medium leakage.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, the pressure relief assembly also includes a sealing cover fixedly mounted on the surface of the plug rod and located outside the connecting pipe, the inner wall of the sealing cover is connected to the external thread of the connecting pipe, and a second sealing ring is fixedly mounted on the surface of the plug rod, the other end of which is slidably connected to the inner wall of the connecting pipe.

[0012] Furthermore, an external pipe is provided at the bottom of the connecting pipe, an annular plate is fixedly installed inside the external pipe, one end of the ball holder extends into the inside of the external pipe and contacts with one side surface of the annular plate, and the side surface of the annular plate away from the ball holder is conically arranged.

[0013] Furthermore, flanges are fixedly mounted on the surfaces of the connecting pipe and the external pipe, and the connecting pipe and the external pipe are movably connected via the flanges.

[0014] Furthermore, a pressure gauge is threadedly inserted at one end of the valve body away from the connecting pipe, and a bellows is threadedly inserted at the other end of the pressure gauge.

[0015] Furthermore, an internal thread is provided on the inner wall of the external pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the internal structure of the connecting pipeline of the utility model.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 1. Valve body; 2. Fixed plate; 3. Through hole; 4. Sealing ball; 5. Connecting pipe; 6. Pressure relief assembly; 61. Discharge hole; 62. Plug rod; 63. First sealing ring; 64. Turning handle; 65. Sealing cover; 66. Second sealing ring; 7. Ball holder; 8. Ring plate; 9. Flange; 10. Pressure gauge; 11. External pipe; 12. Bellows; 13. Connecting pipe. DETAILED DESCRIPTION

[0021] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0022] like Figures 1 to 3As shown, the utility model embodiment 1 is an automatically cut-off pressure gauge joint, comprising a valve body 1, a fixing plate 2 is fixedly installed inside the valve body 1, a convex through hole 3 is opened inside the fixing plate 2, and a sealing ball 4 is arranged inside the through hole 3;

[0023] A connecting pipe 5 is fixedly installed at the bottom of the valve body 1, and a ball holder 7 is threadedly inserted on the inner wall of the connecting pipe 5. The inner diameter of the ball holder 7 is smaller than the diameter of the sealing ball 4;

[0024] A connecting pipe 13 is connected to one side of the valve body 1 and is located below the fixed plate 2. A pressure relief assembly 6 is arranged inside the connecting pipe 13. The pressure relief assembly 6 includes a discharge hole 61 opened on one side of the connecting pipe 13. A plug rod 62 is arranged inside the connecting pipe 13. One end of the plug rod 62 extends to the inside of the valve body 1. A first sealing ring 63 in contact with the top of the discharge hole 61 is fixedly sleeved on the surface of the plug rod 62. A rotating handle 64 is fixedly installed on the other end of the plug rod 62.

[0025] It should be noted that the ball holder 7 is located below the sealing ball 4 , which can prevent the sealing ball 4 from falling into the connecting pipe 5 .

[0026] The structure is installed vertically in the pipeline system. Under normal circumstances, the sealing ball 4 is suspended in the through hole 3 due to its own density. At this time, the medium circulates normally. When damage occurs in the pipeline, the medium leaks, causing the medium pressure above the sealing ball 4 to decrease, so that the sealing ball 4 moves from bottom to top under the action of pressure change, thereby sealing the top of the through hole 3, preventing serious leakage of the medium in the pipeline, and solving the hidden dangers of losses or safety accidents caused by medium leakage; when the pipeline system is repaired, the sealing ball 4 is still in a cut-off state for the medium, and the plug rod 62 is rotated by the turning handle 64 to move, so that the first sealing ring 63 no longer seals the discharge hole 61, so that the excess medium in the valve body 1 can be discharged through the discharge hole 61, and the sealing ball 4 falls downward at this time, releasing the sealing state of the through hole 3, tightening the plug rod 62, restarting the pipeline system, and thus restoring normal working state.

[0027] Embodiment 2 of the utility model is a pressure gauge joint that can automatically cut off. On the basis of embodiment 1, the pressure relief assembly 6 also includes a sealing cover 65 fixedly mounted on the surface of the plug rod 62 and located outside the connecting pipe 13. The inner wall of the sealing cover 65 is connected to the external thread of the connecting pipe 13, and the surface of the plug rod 62 is fixedly mounted with a second sealing ring 66 whose other end is slidably connected to the inner wall of the connecting pipe 13.

[0028] The sealing cover 65 and the second sealing ring 66 are provided to prevent the excess medium from flowing out from one end of the connecting pipe 13 when the medium is discharged from the discharge hole 61, thereby improving the sealing effect.

[0029] Embodiment 3 of the utility model is a kind of automatically cut-off pressure gauge joint. On the basis of embodiment 1 or 2, an external pipe 11 is arranged at the bottom of the connecting pipe 5, and an annular plate 8 is fixedly installed inside the external pipe 11. One end of the ball holder 7 extends to the inside of the external pipe 11 and contacts with one side surface of the annular plate 8. The side surface of the annular plate 8 away from the ball holder 7 is conically arranged.

[0030] By making the annular plate 8 contact with one end of the ball holder 7, when the medium flows out of the external pipe 11, the medium will not impact the ball holder 7 immediately, thus reducing the probability of damage to the ball holder 7. At the same time, the side of the annular plate 8 facing the medium is set to be conical. The conical design enables the annular plate 8 to disperse and reduce stress concentration when subjected to medium impact, thereby enhancing the structural strength of the annular plate 8. This helps to extend the service life of the annular plate 8.

[0031] Embodiment 4 of the utility model is a pressure gauge joint that can automatically cut off. On the basis of embodiment 3, flanges 9 are fixedly installed on the surfaces of the connecting pipe 5 and the external pipe 11, and the connecting pipe 5 and the external pipe 11 are movably connected through the flange 9.

[0032] By setting the flange 9, the staff can quickly splice the connecting pipe 5 and the external pipe 11, and the staff can replace the sealing ball 4. By replacing the sealing ball 4 with a different material, the density of the sealing ball 4 itself is changed, so that the structure can be applied to pipeline systems with different medium flow rates.

[0033] Embodiment 5 of the utility model is an automatically cut-off pressure gauge connector. Based on any one of embodiments 1 to 4, a pressure gauge 10 is threadedly inserted into one end of the valve body 1 away from the connecting pipe 5, and a bellows 12 is threadedly inserted into the other end of the pressure gauge 10.

[0034] According to the telescopic property of the bellows 12 itself, the staff can install the device according to the relative distance between the two ends, thereby improving the adaptability of the device.

[0035] Embodiment 6 of the present invention is a pressure gauge connector that can automatically cut off. Based on embodiment 3, an internal thread is provided on the inner wall of the external pipe 11.

[0036] By providing an internal thread on the external pipe 11, it is convenient for workers to install the device into the pipe system.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressure gauge connector that can automatically cut off, characterized in that: It comprises a valve body (1), a fixing plate (2) is fixedly installed inside the valve body (1), a convex through hole (3) is opened inside the fixing plate (2), and a sealing ball (4) is arranged inside the through hole (3); A connecting pipe (5) is fixedly mounted on the bottom of the valve body (1), a ball holder (7) is threadedly inserted on the inner wall of the connecting pipe (5), and the inner diameter of the ball holder (7) is smaller than the diameter of the sealing ball (4); A connecting pipe (13) is connected to one side of the valve body (1) and is located below the fixed plate (2), and a pressure relief assembly (6) is arranged inside the connecting pipe (13); the pressure relief assembly (6) comprises a discharge hole (61) opened on one side of the connecting pipe (13), a plug rod (62) is arranged inside the connecting pipe (13), one end of the plug rod (62) extends into the interior of the valve body (1), a first sealing ring (63) in contact with the top of the discharge hole (61) is fixedly sleeved on the surface of the plug rod (62), and a rotating handle (64) is fixedly mounted on the other end of the plug rod (62).

2. The automatic cut-off pressure gauge connector according to claim 1, characterized in that: The pressure relief assembly (6) further comprises a sealing cover (65) fixedly mounted on the surface of the plug rod (62) and located outside the connecting pipe (13); the inner wall of the sealing cover (65) is connected to the external thread of the connecting pipe (13); and a second sealing ring (66) is fixedly mounted on the surface of the plug rod (62) and the other end of the second sealing ring is slidably connected to the inner wall of the connecting pipe (13).

3. The automatic cut-off pressure gauge connector according to claim 1, characterized in that: An external pipe (11) is arranged at the bottom of the connecting pipe (5), an annular plate (8) is fixedly installed inside the external pipe (11), one end of the ball holder (7) extends into the interior of the external pipe (11) and contacts one side surface of the annular plate (8), and a side surface of the annular plate (8) away from the ball holder (7) is conically arranged.

4. The automatic cut-off pressure gauge connector according to claim 3, characterized in that: Flanges (9) are fixedly mounted on the surfaces of the connecting pipe (5) and the external pipe (11), and the connecting pipe (5) and the external pipe (11) are movably connected via the flanges (9).

5. The automatic cut-off pressure gauge connector according to claim 1, characterized in that: A pressure gauge (10) is threadedly inserted at one end of the valve body (1) away from the connecting pipe (5), and a bellows (12) is threadedly inserted at the other end of the pressure gauge (10).

6. The automatic cut-off pressure gauge connector according to claim 3, characterized in that: The inner wall of the external pipe (11) is provided with an internal thread.

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