Anti-vibration sulfur-tolerant pressure gauge

Abstract

The invention discloses an anti-vibration sulfur-resistant pressure gauge, relates to the field of pressure gauges, and solves the problem that a buckle is easy to bend and damage when a diaphragm in an existing diaphragm pressure gauge is disassembled. The anti-vibration sulfur-resistant pressure gauge comprises a pressure gauge body and a mounting pipe, an upper flange plate and a lower flange plate are mounted at the bottom of the mounting pipe, and an air inlet pipe is mounted at the bottom of the lower flange plate; a diaphragm body is arranged between the upper flange plate and the lower flange plate, the top of the diaphragm body is in butt joint with the pressure gauge body through a pressing rod, and a positioning clamping ring is installed at the bottom of the diaphragm body. The diaphragm fixing mechanism is used for firmly positioning and installing the diaphragm body, and the diaphragm fixing mechanism is installed on the inner side of the lower flange plate; according to the invention, the positioning clamping ring at the bottom of the diaphragm body can be clamped and positioned through the diaphragm fixing mechanism, so that the diaphragm body is quickly positioned on the lower flange plate, and then the diaphragm body is pressed and positioned through the upper flange plate, so that the effect of quick mounting and dismounting is achieved, and the measurement accuracy of the pressure gauge is ensured.

Description

Technical Field

[0001] The present invention relates to the field of pressure gauges, and particularly to an anti-vibration and sulfur-resistant pressure gauge. Background Art

[0002] A pressure gauge is an instrument or device used to measure the pressure of fluids such as gases, liquids, or vapors. It converts the pressure of the fluid into mechanical displacement or electrical signals for output, and can intuitively display or record the numerical value of the fluid pressure. It mainly consists of components such as a dial, a pointer, a spring, and a sensor, and measures the medium pressure mechanically or electronically and displays the result on a scale or a digital screen, and is widely used in industries, automobiles, medical fields, etc.

[0003] In natural gas applications, especially in environments containing hydrogen sulfide, it is crucial to select a sulfur-resistant pressure gauge. Usually, a diaphragm is used to isolate the corrosive medium and protect the internal components. Among them, a diaphragm pressure gauge senses the medium pressure through the diaphragm, and the deformation of the diaphragm drives the transmission mechanism to drive the pointer to display the pressure value. Although the diaphragm is supported by corrosion-resistant materials, impurities in the gas will adhere to the surface of the diaphragm. As the impurities increase, it will reduce the bending effect of the diaphragm, and will also block the intake pipe, reducing the accuracy of gas pressure measurement. It is necessary to clean the diaphragm and the intake pipe regularly. However, the diaphragm is generally fixed by a ring-shaped buckle and embedded in the slot of the chassis, and a relatively large force is required to remove the diaphragm from the chassis. Due to the large disassembly force, it is easy to cause the buckle to bend and deform, and after cleaning, air leakage is likely to occur, affecting the normal measurement of the pressure gauge. Summary of the Invention

[0004] The purpose of the present invention is to provide an anti-vibration and sulfur-resistant pressure gauge to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: An anti-vibration and sulfur-resistant pressure gauge, comprising: a pressure gauge body and an installation pipe fixedly installed at the bottom of the pressure gauge body. The bottom of the installation pipe is fixedly installed with an upper flange, the bottom of the upper flange is installed with a lower flange, the bottom of the lower flange is fixedly installed with an intake pipe, an external thread is provided on the outer side of the intake pipe, a diaphragm body is arranged between the upper flange and the lower flange, the top of the diaphragm body is butted against the pressure gauge body through a movable rod, and a positioning snap ring is fixedly installed at the bottom of the diaphragm body; It further includes: A fixing mechanism for firmly positioning and installing the diaphragm body, and the fixing mechanism is installed inside the lower flange; A pushing and disassembling mechanism for quickly and safely disassembling the diaphragm body, and the pushing and disassembling mechanism is installed inside the lower flange; The locking mechanism is used to install and lock the diaphragm body, and the locking mechanism is installed between the upper flange and the lower flange.

[0006] Preferably, the fixing mechanism includes an installation cavity opened at the top of the lower flange. A fixing ring is fixedly installed on the inner wall of the bottom of the installation cavity. A plurality of sliders symmetrically distributed around the center are slidably installed inside the fixing ring. A sliding rod is fixedly installed at the top of the slider. A rotating ring is rotatably installed inside the installation cavity. An arc-shaped groove for the sliding rod to be limited and slide is opened on the surface of the rotating ring. An arc-shaped clamping strip is fixedly installed at one end of the sliding rod away from the slider. The inner sides of both the arc-shaped clamping strip and the installation cavity are provided with clamping grooves for the positioning snap ring to be limited and clamped. A plurality of pulling blocks symmetrically distributed around the center are fixedly installed on the outer side of the rotating ring. A sliding groove for the pulling block to be limited and slide is opened on the outer side of the lower flange. A guiding rod fixedly installed inside the fixing ring and slidably penetrating through the slider is provided.

[0007] Preferably, the pushing and removing mechanism includes a pushing column arranged on the outer side of the slider. The pushing column is slidably installed inside the lower flange. A sliding cavity for the pushing column to be limited and slide is opened in the clamping groove of the lower flange. A positioning spring is fixedly installed between the bottom of the pushing column and the inner side of the sliding cavity. An L-shaped pressing rod is fixedly installed at the bottom of the slider. A guiding groove for the L-shaped pressing rod to be limited and slide is opened inside the installation cavity. A pressing groove for the L-shaped pressing rod to be limited and slide is opened on the outer side of the pushing column. A pressing block is fixedly installed inside the pressing groove. The opposite surfaces of the pressing block and the L-shaped pressing rod are both inclined plane structures. A rubber pushing block is fixedly installed at the top end of the pushing column.

[0008] Preferably, the locking mechanism includes an adjusting pulling ring fixedly installed on the side of the pulling block away from the rotating ring. An arc-shaped spring is fixedly installed between the outer side of the pulling block and the inner side of the sliding groove of the lower flange. The upper flange is butted against the lower flange through a plurality of bolts symmetrically distributed around the center. The number of bolts is the same as the number of adjusting pulling rings. An inserting rod is fixedly installed at the bottom of the bolt. The inserting rod is limited and inserted inside the adjusting pulling ring directly below. One end of the inserting rod away from the bolt is an arc-shaped inclined plane structure. An arc-shaped rod is fixedly installed on the inner side of the sliding groove of the lower flange. The arc-shaped rod slidably penetrates through the pulling block.

[0009] Preferably, a protective layer is fixedly installed on the inner wall of the lower flange.

[0010] Preferably, a first rubber ring is fixedly installed at the bottom of the upper flange. The bottom of the first rubber ring is in contact with the top of the diaphragm body.

[0011] Preferably, a second rubber ring is fixedly installed on the top of the lower flange, and the top of the second rubber ring is in contact with the bottom of the diaphragm body.

[0012] Preferably, a rubber retaining ring is fixedly installed on the outer side of the rotating ring, and the height of the rubber retaining ring is greater than that of the rotating ring.

[0013] Preferably, a plurality of positioning clamping strips are fixedly installed on the inner side of the rotating ring and are distributed in central symmetry. The positioning clamping strips are slidably installed on the inner side of the installation cavity, and a limiting groove for the positioning clamping strips to slide and be limited is formed on the outer side of the push column.

[0014] Preferably, two symmetrically distributed guiding wing plates are fixedly installed on the outer side of the push column, and guiding grooves for the guiding wing plates to slide and be limited are formed in the sliding cavity of the lower flange.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: Through the fixing mechanism, the present invention can clamp and position the positioning clamping ring at the bottom of the diaphragm body, quickly position the diaphragm body on the lower flange, and then press and position the diaphragm body through the upper flange, realizing the firm installation of the diaphragm body, improving the convenience of installing the diaphragm body, facilitating later disassembly and cleaning, solving the problem that the traditional diaphragm body is prone to bending and damage during disassembly, thus achieving the effects of quick installation and disassembly and ensuring the measurement accuracy of the pressure gauge.

[0016] Through the pushing and disassembling mechanism, when the arc-shaped clamping ring is separated from the positioning clamping ring on the diaphragm body, the L-shaped pressing rod can be far away from the push column, realizing the unlocking of the push column. The return spring force of the positioning spring is used to push the push column to eject the positioning clamping ring from the clamping groove on the lower flange, enabling the staff to directly take the diaphragm body, thereby improving the safety of disassembling the diaphragm body.

[0017] Through the locking mechanism, the present invention enables a plurality of bolts to dock the upper flange and the lower flange. When the bolts are installed, the insertion rod at the bottom of the bolt can be inserted into the inner side of the adjusting pull ring, realizing the limiting and locking of the adjusting pull ring, preventing the problem that an irrelevant person accidentally touches the adjusting pull ring and causes the displacement of the pulling block, facilitating outdoor use, and thus achieving the effect of outdoor protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the installation pipe and the upper flange in the present invention; Figure 3 is Figure 2 the enlarged structure schematic diagram of area A in Figure 4 is a schematic diagram of the diaphragm body and the lower flange in the present invention; Figure 5 Schematic diagram of the pulling block and the arc-shaped clamping bar in the present invention; Figure 6 Schematic diagram of the fixed ring and the slider in the present invention; Figure 7 Schematic diagram of the L-shaped pressing rod and the pressing block in the present invention; Figure 8 Schematic diagram of the positioning clamping bar and the rotating ring in the present invention.

[0019] In the figure: 1, pressure gauge body; 2, installation pipe; 3, upper flange; 4, lower flange; 5, intake pipe; 6, diaphragm body; 7, movable rod; 8, positioning snap ring; 9, installation cavity; 10, fixed ring; 11, slider; 12, slide bar; 13, rotating ring; 14, arc-shaped clamping bar; 15, pulling block; 16, guide rod; 17, push column; 18, positioning spring; 19, L-shaped pressing rod; 20, pressing block; 21, rubber push block; 22, adjusting pull ring; 23, arc-shaped spring; 24, bolt; 25, insertion rod; 26, arc-shaped rod; 27, protective layer; 28, first rubber ring; 29, second rubber ring; 30, rubber retaining ring; 31, positioning clamping bar; 32, guide wing plate. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Embodiment 1: Please refer to Figures 1-8The vibration-resistant and sulfur-resistant pressure gauge shown in the figure includes a pressure gauge body 1 and a mounting tube 2 fixedly mounted on the bottom of the pressure gauge body 1. An upper flange 3 is fixedly mounted on the bottom of the mounting tube 2. The upper flange 3 is butted with the mounting tube 2 through a nut to facilitate assembly of the mounting tube 2 and the upper flange 3. A lower flange 4 is mounted on the bottom of the upper flange 3. A protective layer 27 is fixedly mounted on the inner wall of the lower flange 4. The protective layer 27 is made of corrosion-resistant material to improve the durability of the lower flange 4. An air inlet pipe 5 is fixedly mounted on the bottom of the lower flange 4. An external thread is provided on the outer side of the air inlet pipe 5. The air inlet pipe 5 can be butted with a gas conveying pipeline through the external thread on its outer side. A diaphragm body 6 is arranged between the upper flange 3 and the lower flange 4. The top of the diaphragm body 6 is butted with the pressure gauge body 1 through a movable rod 7. The gas entering the air inlet pipe 5 The body can push the diaphragm body 6 to protrude and deform upward, so that the diaphragm body 6 pushes the movable rod 7 to move, so that the pressure gauge body 1 measures the air pressure through the movement of the movable rod 7. The bottom of the upper flange 3 is fixedly installed with a first rubber ring 28, and the bottom of the first rubber ring 28 contacts the top of the diaphragm body 6. The top of the lower flange 4 is fixedly installed with a second rubber ring 29, and the top of the second rubber ring 29 contacts the bottom of the diaphragm body 6. When the upper flange 3 is docked with the lower flange 4, the first rubber ring 28 and the second rubber ring 29 can be respectively pressed against the top and bottom of the diaphragm body 6 to achieve sealing and fixing of the diaphragm body 6. The bottom of the diaphragm body 6 is fixedly installed with a positioning clamp 8; it also includes: a fixed sheet mechanism, which is used to firmly position and install the diaphragm body 6, and the fixed sheet mechanism is installed on the inner side of the lower flange 4; The stationary piece mechanism includes an installation cavity 9 opened at the top of the lower flange 4. The installation cavity 9 is of an annular structure. A fixing ring 10 is fixedly installed on the bottom inner wall of the installation cavity 9. A plurality of sliders 11 distributed centrosymmetrically are slidably installed inside the fixing ring 10. A slide rod 12 is fixedly installed at the top of the slider 11. A rotating ring 13 is rotatably installed inside the installation cavity 9. An arc-shaped groove for the slide rod 12 to be limited and slide is opened on the surface of the rotating ring 13. When the rotating ring 13 is rotated, the slide rod 12 can be pushed to move through the arc-shaped groove on its surface, so that the slide rod 12 pushes the slider 11 to move linearly along the inner side of the fixing ring 10, and the plurality of slide rods 12 move synchronously towards the center of the lower flange 4. When the rotating ring 13 is rotated in the reverse direction, the plurality of slide rods 12 can synchronously move away from the center of the lower flange 4. An arc-shaped clamping strip 14 is fixedly installed at one end of the slide rod 12 away from the slider 11. When the slide rod 12 moves, the arc-shaped clamping strip 14 can be mobilized to move synchronously. Both the arc-shaped clamping strip 14 and the inner side of the installation cavity 9 have clamping grooves for the positioning snap ring 8 to be limited and clamped. When the arc-shaped clamping strip 14 moves towards the center of the lower flange 4, the clamping groove on the arc-shaped clamping strip 14 can abut against the positioning snap ring 8 of the diaphragm body 6, and cooperate with the clamping groove on the inner side of the installation cavity 9 to fix the positioning snap ring 8, facilitating the rapid positioning of the diaphragm body 6. When the upper flange 3 and the lower flange 4 are butted, the diaphragm body 6 can be quickly fixed. When the diaphragm body 6 is disassembled, the rotating ring 13 is rotated in the reverse direction to make the arc-shaped clamping strip 14 move away from the positioning snap ring 8, facilitating the staff to quickly disassemble the diaphragm body 6 and facilitating later disassembly and cleaning, solving the problem that the traditional diaphragm body 6 is prone to bending damage during disassembly. A plurality of pull blocks 15 distributed centrosymmetrically are fixedly installed on the outer side of the rotating ring 13. A chute for the pull blocks 15 to be limited and slide is opened on the outer side of the lower flange 4. The staff can pull the pull blocks 15 to drive the rotating ring 13 to rotate, realizing the movement adjustment of the arc-shaped clamping strip 14. A rubber retaining ring 30 is fixedly installed on the outer side of the rotating ring 13. The height of the rubber retaining ring 30 is greater than the height of the rotating ring 13. A guide rod 16 that slidably penetrates the slider 11 is fixedly installed on the inner side of the fixing ring 10, providing guidance for the movement of the slider 11 and improving the smoothness of the movement of the slider 11.

[0022] Embodiment 2: Please refer to Figures 4-8, this embodiment further elaborates on the first embodiment. The pushing and disassembling mechanism shown in the figure includes a pushing post 17 arranged outside the slider 11. The number of pushing posts 17 is the same as that of the sliders 11. The pushing posts 17 are slidably installed inside the lower flange 4. A sliding cavity for the pushing posts 17 to slide and be limited is provided in the clamping groove of the lower flange 4. When the pushing posts 17 move upward, the top ends of the pushing posts 17 can enter the clamping groove of the lower flange 4, enabling the pushing posts 17 to push the positioning snap ring 8 out of the clamping groove, facilitating the staff to quickly take out the diaphragm body 6. A positioning spring 18 is fixedly installed between the bottom of the pushing post 17 and the inner side of the sliding cavity. The resilience of the positioning spring 18 can be utilized to quickly move the pushing post 17 upward and push the positioning snap ring 8 out of the clamping groove of the installation cavity 9. An L-shaped pressing rod 19 is fixedly installed at the bottom of the slider 11. When the slider 11 moves, it can drive the L-shaped pressing rod 19 to move synchronously. A guiding groove for the L-shaped pressing rod 19 to slide and be limited is provided inside the installation cavity 9. A pressing groove for the L-shaped pressing rod 19 to slide and be limited is provided on the outer side of the pushing post 17. When the L-shaped pressing rod 19 moves, it can be inserted into the pressing groove of the pushing post 17. A pressing block 20 is fixedly installed inside the pressing groove. The surfaces of the pressing block 20 and the L-shaped pressing rod 19 corresponding to each other are both inclined surface structures. During the movement of the L-shaped pressing rod 19, the inclined surface of the L-shaped pressing rod 19 comes into contact with the inclined surface of the pressing block 20, and the L-shaped pressing rod 19 can push the pushing post 17 downward through the pressing block 20 to compress the positioning spring 18. A rubber pushing block 21 is fixedly installed at the top end of the pushing post 17. When the pushing post 17 moves upward, the positioning snap ring 8 can be pushed through the rubber pushing block 21 to provide protection for the positioning snap ring 8. A plurality of positioning strips 31 distributed in central symmetry are fixedly installed inside the inner side of the rotating ring 13. The positioning strips 31 are slidably installed inside the installation cavity 9. The positioning strips 31 can provide positioning for the rotating ring 13 and improve the smoothness of the rotation of the rotating ring 13. A limiting groove for the positioning strips 31 to slide and be limited is provided on the outer side of the pushing post 17, which can provide locking for the pushing post 17 and provide secondary locking for the pushing post 17 to prevent the L-shaped pressing rod 19 from being damaged and misfiring. Two symmetrically distributed guiding wing plates 32 are fixedly installed on the outer side of the pushing post 17. A guiding groove for the guiding wing plates 32 to slide and be limited is provided in the sliding cavity of the lower flange 4. When the pushing post 17 moves, it can drive the guiding wing plates 32 to move synchronously, improving the smoothness of the movement of the pushing post 17.

[0023] Embodiment Three: Please refer to Figures 2-5, this embodiment further elaborates on other embodiments. The latch mechanism shown in the figure includes an adjustment pull ring 22 fixedly installed on the side of the pull block 15 away from the swivel ring 13. When the adjustment pull ring 22 is pulled, it can drive the pull block 15 to move synchronously, improving the convenience of rotating and adjusting the swivel ring 13. An arc-shaped spring 23 is fixedly installed between the outer side of the pull block 15 and the inner side of the chute of the lower flange 4. When the pull block 15 moves, it can compress the arc-shaped spring 23, and when the diaphragm body 6 is taken out, the elasticity of the arc-shaped spring 23 is utilized to facilitate the pull block 15 to drive the swivel ring 13 to quickly rotate and reset. The upper flange 3 is butted against the lower flange 4 through a plurality of bolts 24 distributed symmetrically about the center, facilitating the installation and disassembly of the upper flange 3 and the lower flange 4. The number of bolts 24 is the same as the number of adjustment pull rings 22. A plug rod 25 is fixedly installed at the bottom of the bolt 24, and the plug rod 25 is limited and inserted into the inner side of the adjustment pull ring 22 directly below it. When the upper flange 3 and the lower flange 4 are installed, the plug rod 25 of the bolt 24 can be inserted into the inner side of the adjustment pull ring 22 to lock the adjustment pull ring 22 and prevent unauthorized personnel from accidentally touching the adjustment pull ring 22. One end of the plug rod 25 away from the bolt 24 is an arc-shaped inclined surface structure, facilitating the insertion of the plug rod 25 into the inner side of the adjustment pull ring 22. An arc-shaped rod 26 is fixedly installed on the inner side of the chute of the lower flange 4, and the arc-shaped rod 26 is located inside the arc-shaped spring 23. The arc-shaped rod 26 slidably penetrates the pull block 15, enabling the pull block 15 to move along the outer side of the arc-shaped rod 26 when it moves, providing guidance for the movement of the pull block 15 and preventing the arc-shaped spring 23 from bending.

[0024] Working principle: First, the operator rotates any one of the adjusting pull rings 22, causing the adjusting pull ring 22 to move the pull block 15 along the outer side of the arc-shaped rod 26 and the inner side of the chute of the lower flange 4, and compressing the arc-shaped spring 23. The pull block 15 drives the rotating ring 13 to rotate along the inner side of the installation cavity 9. The arc-shaped groove on the rotating ring 13 drags the sliding rod 12 to move, causing the sliding rod 12 to drive the sliding block 11 to move linearly along the inner side of the fixed ring 10. The sliding rod 12 can drive the arc-shaped clamping strip 14 away from the clamping groove of the installation cavity 9. At this time, the operator places the diaphragm body 6 on the top of the lower flange 4, inserts the positioning snap ring 8 at the bottom of the diaphragm body 6 into the clamping groove of the installation cavity 9, and releases the adjusting pull ring 22. Using the resilience of the arc-shaped spring 23, the pull block 15 quickly resets. The pull block 15 can drive the rotating ring 13 to rotate back, and the arc-shaped clamping strip 14 approaches the positioning snap ring 8, so that the clamping groove on the arc-shaped clamping strip 14 can abut against the outer side of the positioning snap ring 8. At the same time, the sliding block 11 drives the L-shaped pressing rod 19 to move synchronously, causing the L-shaped pressing rod 19 to insert into the pressing groove of the push column 17. The inclined surface of the L-shaped pressing rod 19 contacts the inclined surface of the pressing block 20, causing the L-shaped pressing rod 19 to push the push column 17 downward through the pressing block 20, compressing the positioning spring 18 at the bottom of the push column 17. The push column 17 can move away from the clamping groove of the installation cavity 9, enabling the arc-shaped clamping strip 14 to cooperate with the clamping groove inside the installation cavity 9 to fix the positioning snap ring 8, realizing the quick positioning of the diaphragm body 6. Then, the operator docks the upper flange 3 with the top of the lower flange 4, fixes the movable rod 7 on the diaphragm body 6, and fixes the upper flange 3 on the top of the lower flange 4 through the bolt 24. At the same time, the insertion rod 25 at the bottom of the bolt 24 can be inserted into the inner side of the adjusting pull ring 22 directly below it, locking the adjusting pull ring 22 by the insertion rod 25 to prevent unauthorized personnel from accidentally touching it and ensuring the firmness of the installation of the arc-shaped clamping strip 14 on the positioning snap ring 8. Moreover, the first rubber ring 28 at the bottom of the upper flange 3 and the second rubber ring 29 at the top of the lower flange 4 respectively abut against the top and bottom of the diaphragm body 6, realizing the sealed installation of the diaphragm body 6 to prevent gas leakage. Thus, the installation of the diaphragm body 6 is completed, achieving the effect of quick assembly and improving the convenience of the installation of the diaphragm body 6; When it is necessary to disassemble and clean the diaphragm body 6, the staff removes the bolt 24 from the upper flange 3 and the lower flange 4. The insertion rod 25 at the bottom of the bolt 24 is pulled out from the inside of the adjusting pull ring 22. The staff pulls the adjusting pull ring 22 to rotate the rotating ring 13, and the arc-shaped clamping strip 14 moves away from the positioning snap ring 8. At the same time, the slider 11 drives the L-shaped pressing rod 19 to move synchronously, so that the L-shaped pressing rod 19 is pulled out from the pushing groove of the pushing column 17. The return spring force of the positioning spring 18 at the bottom of the pushing column 17 is used to push the pushing column 17 upward. The rubber pushing block 21 at the top of the pushing column 17 quickly knocks on the positioning snap ring 8 in the clamping groove of the installation cavity 9, so that the positioning snap ring 8 is removed from the clamping groove of the installation cavity 9, solving the problem that the traditional diaphragm body 6 is prone to bending damage during disassembly, enabling the staff to directly take the diaphragm body 6, thereby improving the safety of disassembling the diaphragm body 6. After the diaphragm body 6 is cleaned, it can be reinstalled between the upper flange 3 and the lower flange 4 to ensure the measurement accuracy of the pressure gauge.

[0025] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0026] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vibration-resistant and sulfur-resistant pressure gauge, characterized in that: include: A pressure gauge body (1) and a mounting tube (2), an upper flange (3) and a lower flange (4) are mounted at the bottom of the mounting tube (2), an air inlet pipe (5) is mounted at the bottom of the lower flange (4), a diaphragm body (6) is arranged between the upper flange (3) and the lower flange (4), the top of the diaphragm body (6) is butt-jointed with the pressure gauge body (1) via a movable rod (7), and a positioning collar (8) is mounted at the bottom of the diaphragm body (6); Also includes: A fixing mechanism, used for firmly positioning and installing the diaphragm body (6), the fixing mechanism being installed on the inner side of the lower flange (4); A push-and-remove mechanism, used for quickly and safely removing the diaphragm body (6), the push-and-remove mechanism being mounted on the inner side of the lower flange (4); A locking mechanism is used to install and lock the diaphragm body (6), and the locking mechanism is installed between the upper flange (3) and the lower flange (4).

2. A vibration-resistant and sulfur-resistant pressure gauge according to claim 1, characterized in that: The fixed plate mechanism comprises a mounting cavity (9) opened at the top of the lower flange (4), a fixing ring (10) is fixedly installed on the bottom inner wall of the mounting cavity (9), a plurality of sliders (11) are slidably installed on the inner side of the fixing ring (10), a sliding rod (12) is fixedly installed on the top of the sliding rod (11), a rotating ring (13) is rotatably installed on the inner side of the mounting cavity (9), an arc groove for limiting the sliding of the sliding rod (12) is opened on the surface of the rotating ring (13), an arc-shaped clamping strip (14) is installed at one end of the sliding rod (12), the arc-shaped clamping strip (14) and the inner side of the mounting cavity (9) both have a clamping groove for limiting the positioning clamping ring (8), and a plurality of pull blocks (15) are fixedly installed on the outer side of the rotating ring (13).

3. A vibration-resistant and sulfur-resistant pressure gauge according to claim 2, characterized in that: The push-and-remove mechanism comprises a push column (17) arranged on the outside of the slider (11), the push column (17) being slidably mounted inside the lower flange (4), a sliding cavity for limiting the sliding of the push column (17) being provided in the slot of the lower flange (4), a positioning spring (18) being installed between the bottom of the push column (17) and the inner side of the sliding cavity, an L-shaped pressure rod (19) being fixedly mounted on the bottom of the slider (11), a pressure groove being provided on the outside of the push column (17), a pressure block (20) being fixedly mounted on the inner side of the pressure groove, the side of the pressure block (20) corresponding to the L-shaped pressure rod (19) being both inclined structures, and a rubber push block (21) being installed on the top of the push column (17).

4. A vibration-resistant and sulfur-resistant pressure gauge according to claim 3, characterized in that: The locking mechanism comprises an adjusting pull ring (22) fixedly mounted on the outside of the pull block (15); an arc spring (23) is fixedly mounted between the outside of the pull block (15) and the lower flange (4); the upper flange (3) is butt-jointed with the lower flange (4) via a plurality of bolts (24); an insert rod (25) is fixedly mounted at the bottom of the bolts (24); the insert rod (25) is limitedly inserted into the inside of the adjusting pull ring (22); one end of the insert rod (25) is an arc-shaped inclined surface structure.

5. The vibration-resistant and sulfur-resistant pressure gauge according to claim 1, characterized in that: A protective layer (27) is fixedly mounted on the inner wall of the lower flange (4).

6. The vibration-resistant and sulfur-resistant pressure gauge according to claim 1, characterized in that: A first rubber ring (28) is fixedly mounted on the bottom of the upper flange (3), and the bottom of the first rubber ring (28) is in contact with the top of the diaphragm body (6).

7. The vibration-resistant and sulfur-resistant pressure gauge according to claim 1, characterized in that: A second rubber ring (29) is fixedly mounted on the top of the lower flange (4), and the top of the second rubber ring (29) is in contact with the bottom of the diaphragm body (6).

8. The vibration-resistant and sulfur-resistant pressure gauge according to claim 2, characterized in that: A rubber retaining ring (30) is fixedly mounted on the outer side of the rotating ring (13), and the height of the rubber retaining ring (30) is greater than the height of the rotating ring (13).

9. The vibration-resistant and sulfur-resistant pressure gauge according to claim 3, characterized in that: A plurality of positioning clips (31) are fixedly mounted on the inner side of the rotating ring (13), the positioning clips (31) are slidably mounted on the inner side of the mounting cavity (9), and a limiting groove is provided on the outer side of the push column (17).

10. The vibration-resistant and sulfur-resistant pressure gauge according to claim 3, characterized in that: Two guide wing plates (32) are fixedly mounted on the outer side of the push column (17), and a guide groove for limiting the sliding of the guide wing plates (32) is provided in the sliding cavity of the lower flange (4).

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