Environment-friendly sealing structure of pressure gauge

Abstract

The utility model relates to the technical field of pressure gauges, in particular to an environment-friendly sealing structure of a pressure gauge, which comprises a pressure gauge body and a bourdon tube arranged in the pressure gauge body, a water inlet pipe is arranged at the bottom end of the pressure gauge body, one end of the bourdon tube is connected with the water inlet pipe, and the environment-friendly sealing structure further comprises a first plugging mechanism, a second plugging mechanism and a pressure relief mechanism. The pressure relief mechanism comprises a rear cover and a telescopic assembly, the first plugging mechanism comprises a housing, a plugging block, a transmission assembly and a mounting assembly, the second plugging mechanism comprises a plugging rod, a sliding cavity and a lifting assembly, and when the bourdon tube bursts to cause a medium to flow into the pressure gauge body and push the rear cover to move, the plugging block can move to the position between the butt joint tube and the connecting tube; according to the bourdon tube, the connecting tube is plugged, the medium is prevented from continuously flowing into the pressure gauge body, namely, the self-sealing effect can be achieved when the bourdon tube leaks, and the situation that the pressure gauge body bursts due to continuous leakage of the medium is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure gauges, in particular to an environmentally friendly sealing structure for a pressure gauge. Background Art

[0002] The pressure gauge uses the elastic deformation of the sensitive elements (Bourdon tube, diaphragm box, bellows) inside the gauge, and then the conversion mechanism in the gauge movement transmits the pressure deformation to the pointer, causing the pointer to rotate to display the pressure.

[0003] The existing pressure gauge has a relatively simple sealing structure, and generally uses sealing rings and other sealing parts to seal the connection between the pressure gauge and the pipeline. However, when the pressure gauge is used, since the wall of the Bourdon tube inside the pressure gauge is relatively thin, when the flow rate of the medium is too large, the Bourdon tube is prone to burst, and the medium flows into the inner cavity of the pressure gauge, causing the pressure gauge to burst. In view of the above problem, an environmentally friendly sealing structure for a pressure gauge is now provided. Utility Model Content

[0004] The utility model aims to provide an environmentally friendly sealing structure for a pressure gauge to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A pressure gauge environmental protection sealing structure comprises a pressure gauge body and a Bourdon tube installed inside the pressure gauge body, a water inlet pipe is installed at the bottom end of the pressure gauge body, one end of the Bourdon tube is connected to the water inlet pipe, and further comprises a first blocking mechanism, a second blocking mechanism and a pressure relief mechanism;

[0007] The pressure relief mechanism includes a rear cover and a telescopic assembly, wherein the rear cover is slidably arranged at one end of the pressure gauge body, and the telescopic assembly is used to make the rear cover slide inside the pressure gauge body, and the telescopic assembly is located between the pressure gauge body and the rear cover;

[0008] The first blocking mechanism includes a cover shell, a blocking block, a transmission assembly and a mounting assembly. The cover shell is located below the water inlet pipe. The mounting assembly is used to install the cover shell. The mounting assembly is located at both ends of the cover shell. The blocking block is slidably arranged inside the cover shell. The transmission assembly is used to drive the blocking block to slide inside the cover shell. The transmission assembly is located between the blocking block and the rear cover.

[0009] The second blocking mechanism includes a blocking rod, a sliding cavity and a lifting assembly. The sliding cavity is opened in the middle of the bottom end of the blocking block. The blocking rod is inserted into the sliding cavity. The lifting assembly is used to drive the blocking rod to move. The lifting assembly is located between the blocking rod and the blocking block.

[0010] As a further solution of the utility model: the telescopic assembly includes four bar-shaped grooves, four sliders, four second springs and four L-shaped rods;

[0011] Four strip grooves are equidistantly arranged on the surface of the pressure gauge body, each slider is slidably arranged inside a strip groove, one side of each strip groove is provided with a column fixedly installed on the pressure gauge body, each L-shaped rod is slidably arranged on a column, and both ends of each L-shaped rod are respectively fixedly connected to the slider and the back cover, each second spring is sleeved on an L-shaped rod, and the two ends of each second spring are respectively fixedly connected to the slider and the column.

[0012] As a further solution of the utility model: an arc groove is provided on the inner wall of one end of the pressure gauge body close to the Bourdon tube, an arc plate is slidably arranged inside the arc groove, the arc plate is fixedly mounted on the surface of the rear cover, and a second sealing gasket for sealing is provided on the side of the arc plate away from the rear cover.

[0013] As a further solution of the utility model: the installation component includes a butt pipe and a connecting pipe, the butt pipe is fixed at the top of the cover shell, the butt pipe is sleeved outside the water inlet pipe and threadedly connected to the water inlet pipe, the connecting pipe is fixedly installed at the bottom end of the cover shell, and the connecting pipe is used to connect the cover shell to the pipeline.

[0014] As a further solution of the utility model: the transmission assembly includes a connecting rod and a through hole. The through hole is opened on one side of the cover shell. The connecting rod is slidably inserted inside the through hole. The inner wall of the through hole is provided with a second sealing ring for sealing. The two ends of the connecting rod are respectively fixedly connected to the blocking block and the back cover.

[0015] As a further solution of the utility model: the lifting assembly includes a moving plate and a plurality of first springs, the moving plate is installed at the top end of the blocking rod, the moving plate is slidably arranged inside the sliding cavity, and the plurality of first springs are equidistantly fixedly installed on one side of the moving plate close to the blocking rod, and the other end of each first spring is fixedly connected to the inner wall of the sliding cavity.

[0016] As a further solution of the utility model: the outer diameter of the blocking rod matches the inner diameter of the connecting pipe, and two first sealing rings for sealing are installed on the surface of the blocking rod.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The utility model provides an environmentally friendly sealing structure for a pressure gauge. When the Bourdon tube bursts and causes the medium to flow into the interior of the pressure gauge body and pushes the rear cover to move, the blocking block can move between the butt tube and the connecting tube to seal the connecting tube and prevent the medium from continuing to flow into the interior of the pressure gauge body. That is, it can achieve a self-sealing effect when the Bourdon tube leaks, preventing the pressure gauge body from bursting due to continuous leakage of the medium.

[0019] 2. The utility model provides an environmentally friendly sealing structure for a pressure gauge. When the sealing block seals the connecting pipe, the sealing rod can be moved into the interior of the connecting pipe to seal the connecting pipe again, thereby achieving a double sealing effect and ensuring the self-sealing sealing effect of the pressure gauge when it leaks.

[0020] 3. The utility model provides an environmentally friendly sealing structure for a pressure gauge. By setting a pressure relief mechanism, when the Bourdon tube ruptures, the medium instantly flows into the interior of the pressure gauge body. At this time, since the rear cover slides inside the pressure gauge body, the rear cover can be moved out of the pressure gauge body under the action of the medium, thereby increasing the volume inside the pressure gauge body and achieving a buffering effect, thereby avoiding the pressure gauge body from bursting due to the instantaneous large impact force of the medium and improving the safety of use.

[0021] 4. The environmentally friendly sealing structure of a pressure gauge of the utility model utilizes the cooperation between the pressure relief mechanism, the first blocking mechanism and the second blocking mechanism to block and seal when the Bourdon tube bursts, thereby preventing the internal medium from flowing out to cause environmental pollution and waste, and achieving an environmentally friendly effect;

[0022] 5. The utility model provides an environmentally friendly sealing structure for a pressure gauge, which facilitates the connection and disassembly of the cover shell, the pressure gauge body and the pipeline by arranging butt joints and connecting pipes at both ends of the cover shell, and further facilitates the resetting of the sealing block inside the cover shell, so as to achieve the effect of repeated use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model.

[0024] Figure 2 It is a side view of the utility model.

[0025] Figure 3 It is a cross-sectional view of the utility model.

[0026] Figure 4 For this utility model Figure 3 Schematic diagram of the enlarged structure of part A.

[0027] Figure 5 For this utility model Figure 3 Schematic diagram of the enlarged structure of part B.

[0028] Figure 6 For this utility model Figure 5 Schematic diagram of the enlarged structure of part C.

[0029] Among them: 11. Pressure gauge body; 12. Bourdon tube; 13. Cover; 14. Sealing block; 15. First sealing gasket; 16. Sliding cavity; 17. Sealing rod; 18. First sealing ring; 19. Moving plate; 20. First spring; 21. Back cover; 22. Arc groove; 23. Arc plate; 24. Second sealing gasket; 25. Strip groove; 26. Sliding block; 27. Second spring; 28. Column; 29. ​​L-shaped rod; 30. Connecting rod; 31. Water inlet pipe; 32. Butt pipe; 33. Connecting pipe. DETAILED DESCRIPTION

[0030] 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.

[0031] The utility model provides the following preferred embodiments:

[0032] Embodiment 1, as Figure 1-Figure 6 As shown, an environmentally friendly sealing structure of a pressure gauge includes a pressure gauge body 11 and a Bourdon tube 12 installed inside the pressure gauge body 11, a water inlet pipe 31 is installed at the bottom end of the pressure gauge body 11, one end of the Bourdon tube 12 is connected to the water inlet pipe 31, and is used to allow the medium to flow into the interior of the Bourdon tube 12, and also includes a first blocking mechanism, a second blocking mechanism and a pressure relief mechanism;

[0033] The pressure relief mechanism includes a rear cover 21 and a telescopic assembly. The rear cover 21 is slidably arranged at one end of the pressure gauge body 11. The telescopic assembly is used to make the rear cover 21 slide inside the pressure gauge body 11. The telescopic assembly is located between the pressure gauge body 11 and the rear cover 21. When the rear cover 21 slides toward the side away from the pressure gauge body 11, the volume inside the pressure gauge body 11 can be increased. When the Bourdon tube 12 ruptures, the medium instantly flows into the inside of the pressure gauge body 11. At this time, since the rear cover 21 slides inside the pressure gauge body 11, the rear cover 21 can be moved out of the pressure gauge body 11 under the action of the medium, thereby increasing the volume inside the pressure gauge body 11 and achieving a buffering effect, thereby avoiding the situation where the pressure gauge body 11 bursts due to the instantaneous large impact force of the medium, thereby improving the safety of use.

[0034] The first blocking mechanism includes a cover shell 13, a blocking block 14, a transmission assembly and a mounting assembly. The cover shell 13 is located below the water inlet pipe 31. The mounting assembly is used to install the cover shell 13. The mounting assembly is located at both ends of the cover shell 13. The blocking block 14 is slidably arranged inside the cover shell 13. Specifically, the bottom end of the first sealing gasket 15 is provided with a first sealing gasket 15 for increasing the sealing effect between the blocking block 14 and the cover shell 13, which is used to improve the sealing effect. The transmission assembly is used to drive the blocking block 14 to slide inside the cover shell 13. The transmission assembly is located between the blocking block 14 and the back cover 21.

[0035] The installation assembly is used to install the blocking block 14 so that one end of the blocking block 14 can be connected to the Bourdon tube 12 in the pressure gauge body 11. The other end of the blocking block 14 can be connected to a pipeline for conveying a medium, and the transmission assembly can drive the blocking block 14 to move inside the housing 13;

[0036] The transmission assembly is used to drive the blocking block 14 to move when the Bourdon tube 12 bursts, so that the blocking block 14 can block the pipe opening at one end entering the interior of the housing 13 to prevent the medium from continuously entering, thereby achieving a self-sealing effect;

[0037] The second blocking mechanism includes a blocking rod 17, a sliding cavity 16 and a lifting assembly. The sliding cavity 16 is provided at the middle of the bottom end of the blocking block 14. The blocking rod 17 is inserted into the sliding cavity 16. The lifting assembly is used to drive the blocking rod 17 to move. The lifting assembly is located between the blocking rod 17 and the blocking block 14.

[0038] After the blocking block 14 blocks the pipe opening, the lifting assembly can drive the blocking rod 17 to move downward and move in to achieve a second blocking, thereby achieving a double sealing effect and ensuring the self-sealing sealing effect of the pressure gauge when it leaks.

[0039] like Figure 1-Figure 6 As shown, the telescopic assembly includes four bar-shaped grooves 25, four sliders 26, four second springs 27 and four L-shaped rods 29;

[0040] Four strip grooves 25 are equidistantly provided on the surface of the pressure gauge body 11, each slider 26 is slidably arranged inside a strip groove 25, a column 28 fixedly installed on the pressure gauge body 11 is provided on one side of each strip groove 25, each L-shaped rod 29 is slidably arranged on a column 28, and both ends of each L-shaped rod 29 are respectively fixedly connected to the slider 26 and the rear cover 21, each second spring 27 is sleeved on an L-shaped rod 29, and both ends of each second spring 27 are respectively fixedly connected to the slider 26 and the column 28;

[0041] In the initial state, the rear cover 21 is located inside the pressure gauge body 11, the four second springs 27 are in a natural state, and the four sliders 26 are respectively located at one end of the four strip grooves 25 away from the column 28. When the Bourdon tube 12 bursts, the medium inside the Bourdon tube 12 gradually flows into the inside of the pressure gauge body 11. At this time, the medium pushes the rear cover 21 to move, and the second springs 27 are deformed and elongated. When the rear cover 21 slides toward the side away from the pressure gauge body 11, the volume inside the pressure gauge body 11 can be increased, which has a buffering effect, avoiding the situation where the pressure gauge body 11 bursts due to the instantaneous large impact force of the medium, thereby improving the safety of use.

[0042] like Figure 1-Figure 6As shown, an arc-shaped groove 22 is provided on the inner wall of one end of the pressure gauge body 11 close to the Bourdon tube 12, and an arc-shaped plate 23 is slidably provided inside the arc-shaped groove 22. The arc-shaped plate 23 is fixedly mounted on the surface of the rear cover 21. By arranging the sliding fit between the arc-shaped plate 23 and the arc-shaped groove 22, a guiding effect can be played on the rear cover 21, ensuring that the rear cover 21 slides more smoothly. A second sealing gasket 24 for sealing is provided on the side of the arc-shaped plate 23 away from the rear cover 21. The provision of the second sealing gasket 24 can increase the sealing effect between the arc-shaped plate 23 and the arc-shaped groove 22, prevent the medium from flowing out from the gap between the arc-shaped groove 22 and the arc-shaped plate 23, and avoid environmental pollution and waste caused by medium leakage, thereby achieving an environmental protection effect.

[0043] like Figure 1-Figure 6 As shown, the installation assembly includes a butt joint pipe 32 and a connecting pipe 33. The butt joint pipe 32 is fixed to the top of the housing 13. The butt joint pipe 32 is sleeved outside the water inlet pipe 31 and is threadedly connected to the water inlet pipe 31, so as to realize the connection and fixation between the housing 13 and the pressure gauge body 11. The connecting pipe 33 is fixedly installed at the bottom end of the housing 13. The connecting pipe 33 is used to connect the housing 13 with the pipeline, that is, the connecting pipe 33 can realize the connection between the housing 13 and the pipeline for conveying the medium.

[0044] By arranging the butt joint 32 and the connecting pipe 33 at both ends of the cover 13, it is convenient to connect and disassemble the cover 13 and the pressure gauge body 11 and the pipeline, and then it is convenient to reset the blocking block 14 inside the cover 13, so as to achieve the effect of repeated use.

[0045] like Figure 1-Figure 6 As shown, the transmission assembly includes a connecting rod 30 and a through hole. The through hole is opened on one side of the cover 13. The connecting rod 30 is slidably inserted inside the through hole. The inner wall of the through hole is provided with a second sealing ring for sealing. The second sealing ring can ensure the sealing effect between the connecting rod 30 and the cover 13 to prevent the medium from flowing out of the gap between the connecting rod 30 and the cover 13. The two ends of the connecting rod 30 are fixedly connected to the blocking block 14 and the back cover 21 respectively.

[0046] When the Bourdon tube 12 bursts and causes the medium to flow into the interior of the pressure gauge body 11 and pushes the back cover 21 to move, under the action of the connecting rod 30, when the back cover 21 moves toward the side away from the pressure gauge body 11, it can drive the blocking block 14 to move, so that the blocking block 14 can block the connecting pipe 33 to prevent the medium from flowing into the interior of the pressure gauge body 11 again, that is, it can achieve a self-sealing effect when the Bourdon tube 12 leaks, and prevent the pressure gauge body 11 from bursting due to continuous leakage of the medium.

[0047] like Figure 1-Figure 6As shown, the lifting assembly includes a moving plate 19 and a plurality of first springs 20. The moving plate 19 is installed at the top of the blocking rod 17. The moving plate 19 is slidably arranged inside the sliding cavity 16. Specifically, the cross section of the sliding cavity 16 is T-shaped. The moving plate 19 is slidably arranged in the upper half of the sliding cavity 16 to achieve the function of limiting. The blocking rod 17 slides in the lower half of the sliding cavity 16. A plurality of first springs 20 are equidistantly fixedly installed on one side of the moving plate 19 close to the blocking rod 17. The other end of each first spring 20 is fixedly connected to the inner wall of the sliding cavity 16.

[0048] In the initial state, the blocking block 14 is located on one side of the cover shell 13. At this time, the bottom end of the blocking rod 17 is in contact with the inner wall of the cover shell 13, and the first spring 20 is in an elongated state. When the blocking block 14 is moving, when the blocking rod 17 is moved to the top of the connecting pipe 33 under the action of the blocking block 14, the first spring 20 can drive the blocking rod 17 to move downward to the inside of the connecting pipe 33, thereby blocking the connecting pipe 33 again, thereby achieving a double sealing effect, ensuring the self-sealing sealing effect of the pressure gauge when it leaks.

[0049] like Figure 1-Figure 6 As shown, the outer diameter of the blocking rod 17 matches the inner diameter of the connecting tube 33, and two first sealing rings 18 for sealing are installed on the surface of the blocking rod 17. The first sealing rings 18 are used to increase the sealing between the blocking rod 17 and the connecting tube 33 to ensure the sealing effect.

[0050] The beneficial effects of the present invention are specifically embodied in that 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 environmentally friendly sealing structure, comprising a pressure gauge body (11) and a Bourdon tube (12) installed inside the pressure gauge body (11), a water inlet pipe (31) installed at the bottom end of the pressure gauge body (11), one end of the Bourdon tube (12) connected to the water inlet pipe (31), It is characterized in that It also includes a first blocking mechanism, a second blocking mechanism and a pressure relief mechanism; The pressure relief mechanism comprises a rear cover (21) and a telescopic assembly, wherein the rear cover (21) is slidably arranged at one end of the pressure gauge body (11), and the telescopic assembly is used to make the rear cover (21) slide inside the pressure gauge body (11), and the telescopic assembly is located between the pressure gauge body (11) and the rear cover (21); The first blocking mechanism comprises a cover shell (13), a blocking block (14), a transmission assembly and a mounting assembly, the cover shell (13) being located below the water inlet pipe (31), the mounting assembly being used for mounting the cover shell (13), the mounting assembly being located at both ends of the cover shell (13), the blocking block (14) being slidably disposed inside the cover shell (13), the transmission assembly being used for driving the blocking block (14) to slide inside the cover shell (13), and the transmission assembly being located between the blocking block (14) and the rear cover (21); The second blocking mechanism comprises a blocking rod (17), a sliding cavity (16) and a lifting assembly. The sliding cavity (16) is arranged in the middle of the bottom end of the blocking block (14). The blocking rod (17) is inserted into the interior of the sliding cavity (16). The lifting assembly is used to drive the blocking rod (17) to move. The lifting assembly is located between the blocking rod (17) and the blocking block (14).

2. The environmentally friendly sealing structure of a pressure gauge according to claim 1, It is characterized in that The telescopic assembly comprises four strip grooves (25), four slide blocks (26), four second springs (27) and four L-shaped rods (29); Four strip grooves (25) are equidistantly arranged on the surface of the pressure gauge body (11); each slider (26) is slidably arranged inside a strip groove (25); one side of each strip groove (25) is provided with a column (28) fixedly mounted on the pressure gauge body (11); each L-shaped rod (29) is slidably arranged on a column (28); both ends of each L-shaped rod (29) are respectively fixedly connected to the slider (26) and the rear cover (21); each second spring (27) is sleeved on an L-shaped rod (29); and both ends of each second spring (27) are respectively fixedly connected to the slider (26) and the column (28).

3. The environmentally friendly sealing structure of a pressure gauge according to claim 2, It is characterized in that An arc-shaped groove (22) is formed on the inner wall of one end of the pressure gauge body (11) close to the Bourdon tube (12), an arc-shaped plate (23) is slidably arranged inside the arc-shaped groove (22), the arc-shaped plate (23) is fixedly mounted on the surface of the rear cover (21), and a second sealing gasket (24) for sealing is provided on the side of the arc-shaped plate (23) away from the rear cover (21).

4. The environmentally friendly sealing structure of a pressure gauge according to claim 3, It is characterized in that The installation assembly comprises a butt-joint pipe (32) and a connecting pipe (33), wherein the butt-joint pipe (32) is fixed to the top end of the housing (13), the butt-joint pipe (32) is sleeved outside the water inlet pipe (31) and is threadedly connected to the water inlet pipe (31), and the connecting pipe (33) is fixedly mounted at the bottom end of the housing (13), and the connecting pipe (33) is used to connect the housing (13) to the pipeline.

5. The environmentally friendly sealing structure of a pressure gauge according to claim 4, It is characterized in that The transmission assembly comprises a connecting rod (30) and a through hole. The through hole is provided on one side of the cover shell (13). The connecting rod (30) is slidably inserted into the inside of the through hole. The inner wall of the through hole is provided with a second sealing ring for sealing. The two ends of the connecting rod (30) are respectively fixedly connected to the blocking block (14) and the rear cover (21).

6. The environmentally friendly sealing structure of a pressure gauge according to claim 5, It is characterized in that The lifting assembly comprises a moving plate (19) and a plurality of first springs (20), wherein the moving plate (19) is mounted on the top end of the blocking rod (17), the moving plate (19) is slidably arranged inside the sliding cavity (16), and the plurality of first springs (20) are equidistantly fixedly mounted on a side of the moving plate (19) close to the blocking rod (17), and the other end of each first spring (20) is fixedly connected to the inner wall of the sliding cavity (16).

7. The environmentally friendly sealing structure of a pressure gauge according to claim 6, It is characterized in that The outer diameter of the blocking rod (17) matches the inner diameter of the connecting pipe (33), and two first sealing rings (18) for sealing are installed on the surface of the blocking rod (17).

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