An anti-vibration and sulfur-resistant pressure gauge

Abstract

The present invention discloses an anti-vibration sulfur-resistant pressure gauge, which relates to the field of pressure gauges and solves the problem that the diaphragm in the existing diaphragm pressure gauge is prone to buckle bending and damage during disassembly. It includes: a pressure gauge body and an installation pipe. An upper flange and a lower flange are installed at the bottom of the installation pipe. An air inlet pipe is installed at the bottom of the lower flange. 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 pressure rod. A positioning snap ring is installed at the bottom of the diaphragm body; it also includes: a fixed piece mechanism for firmly positioning and installing the diaphragm body, and the fixed piece mechanism is installed inside the lower flange; through the fixed piece mechanism of the present invention, the positioning snap ring at the bottom of the diaphragm body can be clamped and positioned, so that the diaphragm body can be quickly positioned on the lower flange, and then the diaphragm body is pressed and positioned through the upper flange, thereby achieving the effect of quick installation and disassembly and ensuring the measurement accuracy of the pressure gauge.

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 signal 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, 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 an environment 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 a diaphragm. 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, the bending effect of the diaphragm will be reduced, and it will also cause blockage of 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 card slot of the chassis. A relatively large force is required to remove the diaphragm from the chassis. Due to the large disassembly force, the buckle is easily bent and deformed, 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:

[0006] 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. A top flange is fixedly installed at the bottom of the installation pipe. A bottom flange is installed at the bottom of the top flange. An intake pipe is fixedly installed at the bottom of the bottom flange. An external thread is provided on the outer side of the intake pipe. A diaphragm body is arranged between the top flange and the bottom flange. The top of the diaphragm body is docked with the pressure gauge body through a movable rod. A positioning snap ring is fixedly installed at the bottom of the diaphragm body;

[0007] It further includes:

[0008] A fixing mechanism for firmly positioning and installing the diaphragm body, and the fixing mechanism is installed inside the bottom flange;

[0009] 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 plate;

[0010] A locking mechanism for locking the installation of the diaphragm body, and the locking mechanism is installed between the upper flange plate and the lower flange plate.

[0011] Preferably, the fixing mechanism includes an installation cavity opened at the top of the lower flange plate. A fixing ring is fixedly installed on the inner wall of the bottom of the installation cavity. A plurality of sliders distributed centrosymmetrically 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 bar is fixedly installed at one end of the sliding rod away from the slider. The inner sides of the arc-shaped clamping bar and the installation cavity are both provided with clamping grooves for the positioning snap ring to be limited and clamped. A plurality of pull blocks distributed centrosymmetrically are fixedly installed on the outer side of the rotating ring. A sliding groove for the pull block to be limited and slide is opened on the outer side of the lower flange plate. A guide rod that slidably penetrates the slider is fixedly installed inside the fixing ring.

[0012] Preferably, the pushing and disassembling mechanism includes a push column arranged on the outer side of the slider. The push column is slidably installed inside the lower flange plate. A sliding cavity for the push column to be limited and slide is opened in the clamping groove of the lower flange plate. A positioning spring is fixedly installed between the bottom of the push 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 push column. A pressing block is fixedly installed inside the pressing groove. The surfaces of the pressing block and the L-shaped pressing rod corresponding to each other are both inclined plane structures. A rubber push block is fixedly installed at the top end of the push column.

[0013] Preferably, the locking mechanism includes an adjusting pull ring fixedly installed on the side of the pull block away from the rotating ring. An arc-shaped spring is fixedly installed between the outer side of the pull block and the inner side of the sliding groove of the lower flange plate. The upper flange plate is butted against the lower flange plate through a plurality of bolts distributed centrosymmetrically. The number of bolts is the same as the number of adjusting pull rings. An inserting rod is fixedly installed at the bottom of the bolt. The inserting rod is limited and inserted inside the adjusting pull 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 inside the sliding groove of the lower flange plate. The arc-shaped rod slidably penetrates the pull block.

[0014] Preferably, a protective layer is fixedly installed on the inner wall of the lower flange plate.

[0015] Preferably, a first rubber ring is fixedly installed at the bottom of the upper flange plate. The bottom of the first rubber ring is in contact with the top of the diaphragm body.

[0016] Preferably, a second rubber ring is fixedly installed at the top of the lower flange, and the top of the second rubber ring is in contact with the bottom of the diaphragm body.

[0017] 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 the height of the rotating ring.

[0018] Preferably, a plurality of positioning clamping strips are fixedly installed on the inner side of the rotating ring and are symmetrically distributed about the center. 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.

[0019] 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.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] Through the fixing plate mechanism, the present invention can clamp and position the positioning snap ring at the bottom of the diaphragm body, so that the diaphragm body is quickly positioned on the lower flange. Then, through the pressing and positioning of the diaphragm body by the upper flange, the firm installation of the diaphragm body is realized, the convenience of installing the diaphragm body is improved, and it is convenient for later disassembly and cleaning. The problem that the traditional diaphragm body is prone to bending and damage during disassembly is solved, so as to achieve the effects of quick installation and disassembly, and ensure the measurement accuracy of the pressure gauge.

[0022] Through the pushing and disassembling mechanism, when the arc snap ring is separated from the positioning snap 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. By using the resilience of the positioning spring, the push column is used to push the positioning snap ring out of 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.

[0023] Through the locking mechanism, the present invention enables a plurality of bolts to butt 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 limit locking of the adjusting pull ring, preventing the problem that an unauthorized person accidentally touches the adjusting pull ring and causes the displacement of the pull block, and being convenient for outdoor use, so as to achieve the effect of outdoor protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 is a schematic diagram of the structure of the installation pipe and the upper flange in the present invention;

[0026] Figure 3 is Figure 2Schematic diagram of the enlarged structure in Area A

[0027] Figure 4 Schematic diagram of the diaphragm body and the lower flange in the present invention

[0028] Figure 5 Schematic diagram of the pulling block and the arc-shaped clamping strip in the present invention

[0029] Figure 6 Schematic diagram of the fixing ring and the slider in the present invention

[0030] Figure 7 Schematic diagram of the L-shaped pressing rod and the pressing block in the present invention

[0031] Figure 8 Schematic diagram of the positioning clamping strip and the rotating ring in the present invention

[0032] In the figure: 1. Pressure gauge body; 2. Installation pipe; 3. Upper flange; 4. Lower flange; 5. Air inlet pipe; 6. Diaphragm body; 7. Moving rod; 8. Positioning snap ring; 9. Installation cavity; 10. Fixing ring; 11. Slider; 12. Slide rod; 13. Rotating ring; 14. Arc-shaped clamping strip; 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. Insert rod; 26. Arc-shaped rod; 27. Protective layer; 28. First rubber ring; 29. Second rubber ring; 30. Rubber retaining ring; 31. Positioning clamping strip; 32. Guide wing plate. Detailed implementation method

[0033] 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.

[0034] Embodiment 1: Please refer to Figures 1-8, An anti-vibration and sulfur-resistant pressure gauge in the illustration, comprising a pressure gauge body 1 and an installation pipe 2 fixedly installed at the bottom of the pressure gauge body 1. A upper flange 3 is fixedly installed at the bottom of the installation pipe 2. The upper flange 3 is butt-jointed with the installation pipe 2 through a nut, facilitating the assembly of the installation pipe 2 and the upper flange 3. A lower flange 4 is installed at the bottom of the upper flange 3. A protective layer 27 is fixedly installed 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 installed at the bottom of the lower flange 4. External threads are provided on the outer side of the air inlet pipe 5. The air inlet pipe 5 can be butt-jointed with the pipeline for conveying gas through the external threads 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 butt-jointed with the pressure gauge body 1 through a movable rod 7. The gas entering the air inlet pipe 5 can push the diaphragm body 6 to bulge and deform upward, causing the diaphragm body 6 to push the movable rod 7 to move, enabling the pressure gauge body 1 to measure the air pressure through the movement of the movable rod 7. A first rubber ring 28 is fixedly installed at the bottom of the upper flange 3. The bottom of the first rubber ring 28 is in contact with the top of the diaphragm body 6. A second rubber ring 29 is fixedly installed at the top of the lower flange 4. The top of the second rubber ring 29 is in contact with the bottom of the diaphragm body 6. When the upper flange 3 and the lower flange 4 are butt-jointed, the first rubber ring 28 and the second rubber ring 29 can respectively abut against the top and bottom of the diaphragm body 6, realizing the sealing and fixing of the diaphragm body 6. A positioning snap ring 8 is fixedly installed at the bottom of the diaphragm body 6; also includes: a fixing plate mechanism for firmly positioning and installing the diaphragm body 6. The fixing plate mechanism is installed inside the lower flange 4;

[0035] The fixed 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 fixed 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 fixed 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 fixed ring 10, and a 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, rotating the rotating ring 13 in the reverse direction can 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 and 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 fixed ring 10, providing guidance for the movement of the slider 11 and improving the smoothness of the movement of the slider 11.

[0036] Embodiment 2: Please refer to Figures 4-8, This embodiment further elaborates on Embodiment 1. The pushing and removing mechanism shown in the figure includes push columns 17 arranged outside the slider 11. The number of push columns 17 is the same as that of the sliders 11. The push columns 17 are slidably installed inside the lower flange 4. A sliding cavity for the push columns 17 to slide and be limited is provided in the card slot of the lower flange 4. When the push columns 17 move upward, the top ends of the push columns 17 can enter the card slot of the lower flange 4, enabling the push columns 17 to push the positioning snap ring 8 out of the card slot, facilitating the staff to quickly remove the diaphragm body 6. A positioning spring 18 is fixedly installed between the bottom of the push column 17 and the inner side of the sliding cavity. The resilience of the positioning spring 18 can be utilized to quickly move the push column 17 upward and push the positioning snap ring 8 out of the card slot 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 push column 17. When the L-shaped pressing rod 19 moves, it can be inserted into the pressing groove of the push column 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 plane structures. During the movement of the L-shaped pressing rod 19, the inclined plane of the L-shaped pressing rod 19 contacts the inclined plane of the pressing block 20, and the L-shaped pressing rod 19 can push the push column 17 downward through the pressing block 20 to compress the positioning spring 18. A rubber push block 21 is fixedly installed at the top end of the push column 17. When the push column 17 moves upward, the positioning snap ring 8 can be pushed through the rubber push block 21 to provide protection for the positioning snap ring 8. A plurality of positioning bars 31 distributed symmetrically about the center are fixedly installed inside the inner side of the rotating ring 13. The positioning bars 31 are slidably installed inside the installation cavity 9. The positioning bars 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 bars 31 to slide and be limited is provided on the outer side of the push column 17, which can provide locking for the push column 17 and provide secondary locking for the push column 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 push column 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 push column 17 moves, it can drive the guiding wing plates 32 to move synchronously, improving the smoothness of the movement of the push column 17.

[0037] Embodiment 3: Please refer to Figures 2-5, this embodiment further illustrates other embodiments. The latch mechanism 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 docked with 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. 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 moving, providing guidance for the movement of the pull block 15 and preventing the arc-shaped spring 23 from bending.

[0038] 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 compress 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 slide rod 12 to move, causing the slide rod 12 to drive the slider 11 to move linearly along the inner side of the fixed ring 10. The slide 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. 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 slider 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, achieving rapid 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. And 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 rapid assembly and improving the convenience of the installation of the diaphragm body 6;

[0039] 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 push column 17. The return spring force of the positioning spring 18 at the bottom of the push column 17 is used to push the push column 17 upward. The rubber push block 21 at the top of the push 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.

[0040] 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 term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising 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.

[0041] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood 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. An anti-vibration and sulfur-resistant pressure gauge, characterized in that, Including: A pressure gauge body and an installation pipe. An upper flange and a lower flange are installed at the bottom of the installation pipe. An air inlet pipe is installed at the bottom of the lower flange. 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. A positioning snap ring is installed at the bottom of the diaphragm body. Also including: A fixing mechanism for fixedly positioning and installing the diaphragm body. The fixing mechanism is installed inside the lower flange. 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 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 limiting the sliding of the sliding rod is opened on the surface of the rotating ring. An arc-shaped clamping strip is installed at one end of the sliding rod. Both the arc-shaped clamping strip and the inner side of the installation cavity have clamping grooves for limiting and clamping the positioning snap ring. A plurality of pulling blocks are fixedly installed on the outer side of the rotating ring. A pushing and disassembling mechanism for quickly and safely disassembling the diaphragm body. The pushing and disassembling mechanism is installed inside the lower flange. The pushing and disassembling 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 limiting the sliding of the pushing column is opened in the clamping groove of the lower flange. A positioning spring is 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 pressing groove is opened on the outer side of the pushing column. A pressing block is fixedly installed inside the pressing groove. The surfaces of the pressing block and the L-shaped pressing rod corresponding to each other are both inclined plane structures. A rubber pushing block is installed at the top end of the pushing column. A locking mechanism for locking the installation of the diaphragm body. The locking mechanism is installed between the upper flange and the lower flange. The locking mechanism includes an adjusting pulling ring fixedly installed on the outer side of the pulling block. An arc-shaped spring is fixedly installed between the outer side of the pulling block and the lower flange. The upper flange is butted against the lower flange through a plurality of bolts. An inserting rod is fixedly installed at the bottom of the bolt. The inserting rod is limitedly inserted into the inner side of the adjusting pulling ring. One end of the inserting rod is an arc-shaped inclined plane structure.

2. The vibration-resistant and sulfur-resistant pressure gauge according to claim 1, wherein: A protective layer is fixedly installed on the inner wall of the lower flange.

3. The vibration-resistant and sulfur-resistant pressure gauge according to claim 1, wherein: 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.

4. The anti-vibration and sulfur-resistant pressure gauge according to claim 1, characterized in that: A second rubber ring is fixedly installed at the top of the lower flange. The top of the second rubber ring is in contact with the bottom of the diaphragm body.

5. The anti-vibration and sulfur-resistant pressure gauge according to claim 1, wherein: A rubber retaining ring is fixedly installed on the outer side of the rotating ring. The height of the rubber retaining ring is greater than the height of the rotating ring.

6. The anti-vibration and sulfur-resistant pressure gauge according to claim 1, characterized in that: A plurality of positioning strips are fixedly installed on the inner side of the rotating ring. The positioning strips are slidably installed inside the installation cavity. A limiting groove is opened on the outer side of the pushing column.

7. An anti-vibration and sulfur-resistant pressure gauge according to claim 1, characterized in that: Two guiding wing plates are fixedly installed on the outer side of the pushing column. A guiding groove for limiting the sliding of the guiding wing plates is opened in the sliding cavity of the lower flange.

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