Diaphragm connecting structure of diaphragm pressure gauge

Abstract

The utility model relates to the technical field of diaphragm pressure gauges, and discloses a diaphragm connecting structure of a diaphragm pressure gauge, which comprises a connecting flange block, a metal diaphragm, a fixing assembly and a sealing assembly, and a convex through hole is formed in the middle of the connecting flange block. According to the utility model, the fixing assembly and the sealing assembly are arranged, the fixing assembly can quickly fix the metal diaphragm through a knob mode, the metal diaphragm can be fixed without the help of an external tool while quick fixing is carried out, and in the process that the whole equipment is influenced, the metal diaphragm can be quickly sealed by the sealing assembly. According to the pressure gauge, the metal diaphragm is not loosened, and the metal diaphragm can be effectively sealed through the sealing assembly in the process of fixing the metal diaphragm, so that a medium is prevented from permeating into the pressure gauge.

Description

Technical Field

[0001] This application relates to the field of diaphragm pressure gauge technology, specifically the diaphragm connection structure of a diaphragm pressure gauge. Background Technology

[0002] Diaphragm pressure gauges are a special type of pressure gauge widely used in industries such as petroleum, chemical, food, and pharmaceuticals. Their core component—the diaphragm—effectively isolates the measured medium from the instrument's internal mechanisms, protecting it from corrosion and contamination and ensuring measurement accuracy and safety.

[0003] The diaphragm inside the diaphragm pressure gauge is welded to the inside of the flange that fixes the diaphragm before leaving the factory. The flange is used to fix the diaphragm to the pressure gauge, thus connecting the diaphragm and the pressure gauge.

[0004] Because welding is used, it is easy for incomplete welds to occur during the welding process. As the diaphragm deforms under the pressure of the medium, the repeated deformation over time can cause the incomplete welds to detach. When the diaphragm is then subjected to pressure from the medium again, the medium can easily enter the pressure gauge through the detached weld, causing damage to the pressure gauge. Utility Model Content

[0005] The purpose of this application is to provide a diaphragm connection structure for a diaphragm pressure gauge, in order to solve the problem mentioned in the background art, which is that during the long-term repeated deformation process, the poorly welded parts of the diaphragm will detach, and when the part is then subjected to pressure from the medium, the medium can easily enter the interior of the pressure gauge from the detached part, causing damage to the pressure gauge.

[0006] To achieve the above objectives, this application provides the following technical solution: a diaphragm connection structure for a diaphragm pressure gauge, comprising: a connecting flange block, a metal diaphragm, a fixing component, and a sealing component. The connecting flange block has a convex through-hole at its central position. The metal diaphragm is disposed inside the through-hole of the connecting flange block. The fixing component is disposed inside the through-hole of the connecting flange block. The fixing component includes slide rails welded to both ends of the inner wall of the through-hole of the connecting flange block. The slide rails are arc-shaped. An mounting ring block is disposed at the central position inside two sets of slide rails. Slider blocks are welded to both sides of the outer wall of the mounting ring block. The sliders are rotatably connected inside the slide rails. A first trapezoidal tooth block is fixed to the inner wall of the slide rail, and a second trapezoidal tooth block is fixed to the outer wall of the slider. The first and second trapezoidal tooth blocks are made of plastic and mesh with each other. The sealing component is disposed on both sides of the outer wall of the metal diaphragm.

[0007] By adopting the above technical solution, the metal diaphragm can be quickly and accurately sealed.

[0008] Preferably, the sealing assembly includes a first sealing ring bonded to the inner wall of the through hole of the connecting flange block and a second sealing ring bonded to one end of the mounting ring block.

[0009] By adopting the above technical solution, the two sets of sealing rings can effectively achieve the subsequent sealing effect.

[0010] Preferably, the first sealing ring and the second sealing ring are respectively attached to both sides of the outer wall of the metal diaphragm.

[0011] By adopting the above technical solution, a stable seal can be achieved on both sides of the metal diaphragm.

[0012] Preferably, the sealing assembly further includes a fixed ring block welded to the inner wall of the mounting ring block, the fixed ring block having a through hole, a sleeve welded to the outer wall of the through hole of the fixed ring block, and a guide rod welded inside the sleeve.

[0013] By adopting the above technical solution, the guide rod can stably achieve sliding displacement inside the sleeve.

[0014] Preferably, the sealing assembly further includes a connecting ring block welded to one end of the guide rod and a spring sleeved on the guide rod.

[0015] By adopting the above technical solution, the connecting ring block on one side can be displaced by squeezing and pushing through its own elasticity.

[0016] Preferably, the sealing assembly further includes a No. 3 sealing ring bonded to the other end of the connecting ring block, and the other end of the No. 3 sealing ring is attached to the metal diaphragm.

[0017] By adopting the above technical solution, a more stable seal can be achieved on one side of the metal diaphragm by cooperating with the No. 2 sealing ring.

[0018] In summary, this application has the following beneficial effects: by providing a fixing component and a sealing component, the fixing component can quickly fix the metal diaphragm by means of a knob. This method can fix the metal diaphragm quickly without the need for external tools, and it will not loosen when the overall equipment is affected. During the fixing of the metal diaphragm, the sealing component can effectively seal the metal diaphragm and prevent the medium from seeping into the interior of the pressure gauge. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of this application;

[0020] Figure 2This is a three-dimensional cross-sectional structural diagram of this application;

[0021] Figure 3 This is a three-dimensional unfolded top view of the fixing and sealing components of this application;

[0022] Figure 4 This is a three-dimensional unfolded bottom view of the fixing and sealing components of this application;

[0023] Figure 5 This is a three-dimensional schematic diagram of the fixing component and sealing component of this application.

[0024] In the diagram: 1. Connecting flange block; 2. Metal diaphragm; 3. Fixing assembly; 301. Slide rail; 302. Mounting ring block; 303. Slider; 304. Trapezoidal toothed block No. 1; 305. Trapezoidal toothed block No. 2; 4. Sealing assembly; 401. Sealing ring No. 1; 402. Sealing ring No. 2; 403. Fixing ring block; 404. Sleeve; 405. Guide rod; 406. Connecting ring block; 407. Spring; 408. Sealing ring No. 3. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] The following is in conjunction with the appendix Figure 1-5 The embodiments of this application will be described in further detail.

[0027] Example 1

[0028] Please see Figures 1-5 This embodiment provides a technical solution: a diaphragm connection structure for a diaphragm pressure gauge, comprising: a connecting flange block 1, a metal diaphragm 2, a fixing component 3, and a sealing component 4;

[0029] A convex through hole is provided in the center of the connecting flange block 1, and a metal diaphragm 2 is disposed inside the through hole of the connecting flange block 1.

[0030] The fixing component 3 is disposed inside the through hole of the connecting flange block 1. The fixing component 3 includes a slide rail 301 welded to both ends of the inner wall of the through hole of the connecting flange block 1. The slide rail 301 is arc-shaped. An mounting ring block 302 is disposed in the middle of the two sets of slide rails 301. A slider 303 is welded to both sides of the outer wall of the mounting ring block 302. The slider 303 is rotatably connected to the inside of the slide rail 301. A first trapezoidal toothed block 304 is fixed on the inner wall of the slide rail 301 and a second trapezoidal toothed block 305 is fixed on the outer wall of the slider 303. The first trapezoidal toothed block 304 and the second trapezoidal toothed block 305 are made of plastic and mesh with each other. The sealing component 4 is disposed on both sides of the outer wall of the metal diaphragm 2.

[0031] When installing the metal diaphragm 2 into the through hole of the connecting flange block 1, the fixing component 3 can quickly fix it without the aid of external tools, and the sealing component 4 can achieve an effective sealing effect after the metal diaphragm 2 is connected and fixed.

[0032] After the metal diaphragm 2 is placed into the through hole of the connecting flange block 1, one end of the metal diaphragm 2 contacts the first sealing ring 401. At this time, the mounting ring block 302 slides within the slide rail 301 via the slider 303. The mounting ring block 302 is limited by the slide rail 301. One end of the mounting ring block 302 limits the other end of the metal diaphragm 2. When the slider 303 rotates within the slide rail 301, the first trapezoidal tooth block 304 and the second trapezoidal tooth block 305 mesh, preventing rotational loosening due to vibration.

[0033] Example 2

[0034] Please see Figures 1-5 This embodiment provides a technical solution: a diaphragm connection structure for a diaphragm pressure gauge, including: a first sealing ring 401, a second sealing ring 402, a fixed ring block 403, a sleeve 404, a guide rod 405, a connecting ring block 406, a spring 407, and a third sealing ring 408.

[0035] The sealing assembly 4 includes a first sealing ring 401 bonded to the inner wall of the through hole of the connecting flange block 1 and a second sealing ring 402 bonded to one end of the mounting ring block 302. The first sealing ring 401 and the second sealing ring 402 are respectively attached to both sides of the outer wall of the metal diaphragm 2.

[0036] A fixed ring block 403 is welded to the inner wall of the mounting ring block 302. The fixed ring block 403 has a through hole. A sleeve 404 is welded to the outer wall of the through hole of the fixed ring block 403 and a guide rod 405 is welded inside the sleeve 404. A connecting ring block 406 is welded to one end of the guide rod 405 and a spring 407 is sleeved on the guide rod 405. A third sealing ring 408 is bonded to the other end of the connecting ring block 406, and the other end of the third sealing ring 408 is attached to the metal diaphragm 2.

[0037] When the mounting ring block 302 is installed and limits the other end of the metal diaphragm 2, the second sealing ring 402 on the mounting ring block 302 seals the other end of the metal diaphragm 2. When the metal diaphragm 2 is squeezed by the medium and the second sealing ring 402 attached to the metal diaphragm 2 deforms, the sleeve 404 on the fixing ring block 403 inside the mounting ring block 302 will drive the guide rod 405 to move stably on the sleeve 404 through the spring 407 on the guide rod 405. At this time, the connecting ring block 406 on the guide rod 405 moves synchronously, thereby synchronously driving the third sealing ring 408 to adhere to one end of the outer wall of the metal diaphragm 2, thus assisting the second sealing ring 402 to achieve an effective sealing effect.

[0038] The implementation principle of the diaphragm connection structure of the diaphragm pressure gauge in this application is as follows:

[0039] First, when installing the metal diaphragm 2 into the through hole of the connecting flange block 1, the fixing component 3 can quickly fix it without the aid of external tools, and the sealing component 4 can effectively seal the metal diaphragm 2 after the connection and fixing are completed.

[0040] Secondly, after the metal diaphragm 2 is placed into the through hole of the connecting flange block 1, one end of the metal diaphragm 2 contacts the first sealing ring 401. At this time, the mounting ring block 302 slides within the slide rail 301 via the slider 303. The mounting ring block 302 is limited by the slide rail 301. One end of the mounting ring block 302 limits the other end of the metal diaphragm 2. When the slider 303 rotates within the slide rail 301, the first trapezoidal tooth block 304 and the second trapezoidal tooth block 305 mesh, preventing rotational loosening due to vibration.

[0041] Finally, when the mounting ring block 302 is installed and limits the other end of the metal diaphragm 2, the second sealing ring 402 on the mounting ring block 302 seals the other end of the metal diaphragm 2. When the metal diaphragm 2 is squeezed by the medium and the second sealing ring 402 attached to the metal diaphragm 2 deforms, the sleeve 404 on the fixed ring block 403 inside the mounting ring block 302 will drive the guide rod 405 to move stably on the sleeve 404 through the spring 407 on the guide rod 405. At this time, the connecting ring block 406 on the guide rod 405 moves synchronously, thereby synchronously driving the third sealing ring 408 to adhere to one end of the outer wall of the metal diaphragm 2, thus assisting the second sealing ring 402 to achieve an effective sealing effect.

[0042] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A diaphragm connection structure for a diaphragm pressure gauge, characterized by The utility model relates to a kind of metal diaphragm sealing structure, including: Connecting flange block (1), the connecting flange block (1) is centrally located and is provided with convex shape through-hole; Metal diaphragm (2), the metal diaphragm (2) is arranged inside the through-hole of connecting flange block (1); Fixed assembly (3), the fixed assembly (3) is arranged inside the through-hole of connecting flange block (1), and the fixed assembly (3) includes the slide rail (301) welded in the through-hole inner wall both ends of connecting flange block (1), the slide rail (301) is shaped as arc shape, is arranged in the installation circular ring block (302) of two groups of slide rail (301) inside central position, the slider (303) welded in the installation circular ring block (302) outer wall both sides, the slider (303) is rotatably connected in the inside of slide rail (301), the first trapezoidal tooth block (304) fixed in the inner wall of slide rail (301) and the second trapezoidal tooth block (305) fixed in the outer wall of slider (303), the first trapezoidal tooth block (304) and the second trapezoidal tooth block (305) are plastic material, the first trapezoidal tooth block (304) and the second trapezoidal tooth block (305) are engaged; Sealing assembly (4), the sealing assembly (4) is arranged in the outer wall both sides of metal diaphragm (2).

2. The diaphragm connection structure of a diaphragm pressure gauge according to claim 1, characterized by: The sealing assembly (4) includes the first sealing ring (401) bonded in the through-hole inner wall of connecting flange block (1) and the second sealing ring (402) bonded in one end of installation circular ring block (302).

3. The diaphragm connection structure of a diaphragm pressure gauge according to claim 2, characterized by: The first sealing ring (401) and the second sealing ring (402) are respectively attached to the both sides of the outer wall of metal diaphragm (2).

4. The diaphragm connection structure of a diaphragm pressure gauge according to claim 1, characterized by: The sealing assembly (4) further includes the fixed circular ring block (403) welded in the inner wall of installation circular ring block (302), the fixed circular ring block (403) is provided with through-hole, the sleeve (404) welded in the through-hole outer wall of fixed circular ring block (403) and the guide rod (405) welded in the inside of sleeve (404).

5. The diaphragm connection structure of a diaphragm pressure gauge according to claim 4, characterized by: The sealing assembly (4) further includes the connecting circular ring block (406) welded in one end of guide rod (405) and the spring (407) sleeved on guide rod (405).

6. The diaphragm connection structure of a diaphragm pressure gauge according to claim 5, characterized by: The sealing assembly (4) further includes the third sealing ring (408) bonded in the other end of connecting circular ring block (406), and the other end of the third sealing ring (408) is attached to metal diaphragm (2).

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