Pressure gauge connecting structure

Abstract

The utility model discloses a pressure gauge connecting structure which is high in connecting strength and good in sealing performance, the orientation of a dial plate of a pressure gauge is adjustable, and observation is convenient during measurement. Comprising a pressure gauge and a pipe body, a connecting hole is formed in the pipe body, a fixed seat communicated with the connecting hole is fixedly arranged on the pipe body, a rotating seat communicated with the connecting hole is rotatably arranged on the fixed seat, a fixed pipe communicated with the connecting hole is fixedly arranged on one side, far away from the fixed seat, of the rotating seat, and the fixed pipe is connected with the connecting hole. A connecting pipe is fixedly arranged at the bottom end of the pressure gauge and fixedly connected with the fixing pipe.

Description

Technical Field

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

[0002] A pressure gauge is an instrument that measures and indicates pressures higher than ambient pressure using an elastic element as its sensing element. The pressure gauge works by transmitting the pressure deformation of its internal sensing element (Bourdon tube, diaphragm, bellows) to a pointer via a mechanism within the gauge's internal structure. This pointer rotation displays the pressure. Pressure gauges are instruments used to measure the pressure of fluids. They are widely used in industries such as industry, chemical engineering, petroleum, natural gas, pharmaceuticals, and food processing, playing a crucial role in practical applications. The structure of a pressure gauge generally includes a pressure-sensing device, a sensor, a circuit board, and a pointer or digital display screen. During installation, a connecting device is used to facilitate quick and easy connection and fixation of the pressure gauge to the pipeline.

[0003] For example, Chinese patent CN220187914U discloses a quick-installation pressure gauge connection structure, including a pipe, a pressure gauge mounted above the pipe, a fixing plate mounted on the outer bottom of the pressure gauge, a limiting component installed inside the fixing plate, and a fixing component mounted on one side of the fixing plate. A threaded sleeve is mounted on the bottom of the pressure gauge. This invention, through the limiting component, facilitates the fixing of the position between the fixing plate and the pipe, effectively preventing the threaded sleeve connected to the bottom of the pressure gauge from loosening. A spring pushes a movable plate to move, causing a slider at the bottom of the movable plate to slide within a groove. The movement of the movable plate also moves a retaining plate, positioning it inside the pipe, effectively preventing the pressure gauge from rotating and maintaining the stability of the threaded structure.

[0004] To prevent the pressure gauge from becoming loose and thus causing inaccurate readings, this invention uses a limiting component to further secure the pressure gauge and prevent it from rotating. However, in actual use, the orientation of the pressure gauge dial is not adjustable, making it difficult to observe during measurement. In addition, the connection structure provided by this patent has poor sealing performance. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects of the existing technology and provide a pressure gauge connection structure with high connection strength, good sealing performance, and adjustable pressure gauge dial orientation for easy observation during measurement.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a pressure gauge connection structure, including a pressure gauge and a tube body, wherein a connection hole is provided on the tube body, a fixed seat communicating with the connection hole is fixedly provided on the tube body, a rotating seat communicating with the connection hole is rotatably provided on the fixed seat, a fixed tube communicating with the connection hole is fixedly provided on the side of the rotating seat away from the fixed seat, and a connecting tube is fixedly provided at the bottom end of the pressure gauge, and the connecting tube is fixedly connected to the fixed tube.

[0007] Furthermore, the fixed base has a first through hole that communicates with the connecting hole, and the rotating base has a second through hole that communicates with the first through hole and the connecting hole. The inner diameters of the first through hole, the second through hole, and the connecting hole all correspond to the inner diameter of the connecting pipe.

[0008] Furthermore, the fixing tube is coaxial with the second through hole, and the inner diameter of the fixing tube corresponds to the outer diameter of the connecting tube.

[0009] Furthermore, the inner wall of the fixing tube is provided with an internal thread, and the outer wall of the connecting tube is provided with a corresponding external thread.

[0010] Furthermore, a first sealing gasket is fixedly provided on the outer wall of the rotating seat, and the first sealing gasket is located between the inner wall of the fixed tube and the second through hole.

[0011] Furthermore, a nut is fitted onto the upper end of the fixing tube, the nut is fitted onto the connecting tube, and the nut is threadedly connected to the fixing tube.

[0012] Furthermore, a second sealing gasket is fixedly provided at the upper end of the fixed tube, and the inner sidewall of the nut abuts against the second sealing gasket.

[0013] Furthermore, the bottom of the rotating seat is provided with a mounting ring, and the fixed seat is provided with a corresponding rotating groove. The mounting ring is rotatably disposed in the rotating groove. The fixed seat is also provided with a rotating cavity communicating with the rotating groove. The mounting ring extends into the rotating cavity. Two limiting plates are fixedly provided at the bottom of the mounting ring. The two limiting plates are located on the outside of the mounting ring and are respectively attached to the top wall and bottom wall of the rotating cavity.

[0014] Furthermore, an elastic ring is provided inside the rotating cavity. The elastic ring is located on the side of the rotating cavity away from the limiting plate. The upper and lower sides of the elastic ring are respectively attached to the top wall and bottom wall of the rotating cavity. The outer side of the elastic ring abuts against the mounting ring. A spring assembly is fixed between the elastic ring and the side wall of the rotating cavity.

[0015] Furthermore, a plurality of limiting grooves are provided on the side wall of the rotating cavity near the limiting plate, and a spring piece is fixedly provided on the outer side of the mounting ring. The spring piece is inclined relative to the mounting ring and can be inserted into the limiting groove.

[0016] By adopting the above technical solution, this utility model has the following beneficial effects:

[0017] 1. After the nut is connected to the threaded connection of the fixed pipe, the inner wall of the nut abuts against the second sealing gasket. At the same time, the nut squeezes the second sealing gasket to deform it. The second sealing gasket abuts against the outer wall of the connecting pipe. The deformation of the second sealing gasket is used to improve the sealing performance and connection strength when the fixed pipe and the connecting pipe are connected.

[0018] 2. Depending on the user's viewing angle, twisting the rotating seat will cause the pressure gauge to rotate relative to the fixed seat;

[0019] 3. By setting up a spring assembly, even if the limit plate and mounting ring wear after long-term use, the elastic ring can still always abut against the mounting ring to ensure the sealing performance and rotational stability when the rotating seat is connected to the fixed seat.

[0020] 4. After the rotating seat rotates to a certain position, the spring clip will engage with the corresponding limit groove to restrict the rotation of the rotating seat. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the pressure gauge connection mechanism of this utility model;

[0022] Figure 2 This is a front view of the pressure gauge connection mechanism of this utility model;

[0023] Figure 3 for Figure 2 A cross-sectional view along the AA direction;

[0024] Figure 4 for Figure 3 Enlarged view of part B in the image;

[0025] Figure 5 for Figure 3 Enlarged view of section C in the image.

[0026] Attached reference numerals: 1. Pressure gauge; 2. Pipe body; 3. Fixed base; 4. Rotating base; 5. Fixed pipe; 6. Connecting pipe;

[0027] 7. Nut; 21. Connecting hole; 31. First through hole; 32. Rotating groove; 33. Rotating cavity; 34. Elastic ring;

[0028] 35. Spring assembly; 36. Limiting groove; 41. Second through hole; 42. First sealing gasket; 43. Mounting ring;

[0029] 44. Limiting plate; 45. Spring piece; 51. Second sealing gasket; 71. Through hole. Detailed Implementation

[0030] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0031] like Figure 1-5 As shown, in this embodiment, a pressure gauge connection structure is provided, including a pressure gauge 1 and a tube body 2. A connection hole 21 is provided on the tube body 2, and a fixed seat 3 connected to the connection hole 21 is fixedly provided on the tube body 2. A rotating seat 4 is rotatably provided on the fixed seat 3. A connecting pipe 6 is fixedly provided at the bottom end of the pressure gauge 1, and the connecting pipe 6 is fixedly connected to the rotating seat 4.

[0032] like Figure 1-5 As shown, in this embodiment, both ends of the pipe body 2 are provided with internal or external threads to facilitate fixed connection with the pipeline.

[0033] like Figure 1-5 As shown, in this embodiment, the bottom surface of the fixing seat 3 abuts against the outer wall of the pipe body 2. The fixing seat 3 can be fixed to the pipe body 2 by welding. The bottom surface of the fixing seat 3 is an arc surface corresponding to the outer surface of the pipe body 2 to improve the sealing performance between the fixing seat 3 and the pipe body 2. The fixing seat 3 is provided with a first through hole 31 that communicates with the connecting hole 21 so that the liquid in the pipe can flow smoothly, thereby facilitating the measurement of the pressure gauge 1.

[0034] like Figure 1-5 As shown, in this embodiment, the rotating seat 4 is provided with a second through hole 41 that communicates with the first through hole 31 and the connecting hole 21. The inner diameters of the first through hole 31, the second through hole 41 and the connecting hole 21 are all corresponding to the inner diameter of the connecting pipe 6. A fixed pipe 5 that communicates with the second through hole 41 is fixedly provided on the side of the rotating seat 4 away from the fixed seat 3. The fixed pipe 5 is coaxial with the second through hole 41, and the inner diameter of the fixed pipe 5 corresponds to the outer diameter of the connecting pipe 6, so that the fixed pipe 5 is sleeved on the outside of the connecting pipe 6. An internal thread is provided on the inner wall of the fixed pipe 5, and a corresponding external thread is provided on the outer wall of the connecting pipe 6. The fixed pipe 5 and the connecting pipe 6 are fixedly connected by threads.

[0035] like Figure 1-5As shown, in this embodiment, a first sealing gasket 42 is fixedly provided on the outer wall of the rotating seat 4. The first sealing gasket 42 is located between the inner wall of the fixed tube 5 and the second through hole 41. When the fixed tube 5 and the connecting tube 6 are threadedly connected, the bottom of the connecting tube 6 abuts against the first sealing gasket 42 to improve the sealing performance when the fixed tube 5 and the connecting tube 6 are connected.

[0036] like Figure 1-5 As shown in this embodiment, in order to further improve the sealing performance and connection strength of the connection between the fixed pipe 5 and the connecting pipe 6, a nut 7 is fitted on the upper end of the fixed pipe 5. Specifically, the outer wall of the upper end of the fixed pipe 5 is provided with an external thread, so that the nut 7 can be threadedly connected to the fixed pipe 5. A through hole 71 corresponding to the outer wall of the connecting pipe 6 is opened on the nut 7, so that the nut 7 can be fitted on the connecting pipe 6. After the fixed pipe 5 and the connecting pipe 6 are threadedly connected, the nut 7 is rotated to make the nut 7 threadedly connected to the fixed pipe 5. A second sealing gasket 51 is fixedly provided on the upper end of the fixed pipe 5. After the nut 7 is threadedly connected to the fixed pipe 5, the inner side wall of the nut 7 abuts against the second sealing gasket 51. At the same time, the nut 7 squeezes the second sealing gasket 51 to deform it. The second sealing gasket 51 abuts against the outer wall of the connecting pipe 6. The deformation of the second sealing gasket 51 is used to improve the sealing performance and connection strength of the connection between the fixed pipe 5 and the connecting pipe 6.

[0037] like Figure 1-5 As shown, in this embodiment, the bottom of the rotating seat 4 is provided with a mounting ring 43, and the fixed seat 3 is provided with a corresponding rotating groove 32. The mounting ring 43 is rotatably disposed in the rotating groove 32. The fixed seat 3 is also provided with a rotating cavity 33 that communicates with the rotating groove 32. The mounting ring 43 extends into the rotating cavity 33. Two limiting plates 44 are fixedly provided at the bottom of the mounting ring 43. The two limiting plates 44 are located on the outside of the mounting ring 43, that is, on the side of the mounting ring 43 away from the first through hole 31. The two limiting plates 44 are respectively attached to the top wall and bottom wall of the rotating cavity 33 to prevent the rotating seat 4 from detaching from the fixed seat 3 when the rotating seat 4 rotates relative to the fixed seat 3. At the same time, the side of the two limiting plates 44 away from the mounting ring 43 is attached to the side wall of the rotating cavity 33 to prevent the rotating seat 4 from shaking during rotation.

[0038] like Figure 1-5As shown, in this embodiment, an elastic ring 34 is provided inside the rotating cavity 33. The elastic ring 34 is located on the side of the rotating cavity 33 away from the limiting plate 44. The upper and lower sides of the elastic ring 34 are respectively in contact with the top wall and bottom wall of the rotating cavity 33. The outer side of the elastic ring 34 abuts against the mounting ring 43. A spring assembly 35 is fixed between the elastic ring 34 and the side wall of the rotating cavity 33. By setting the spring assembly 35, even if the limiting plate 44 and the mounting ring 43 are worn after long-term use, the elastic ring 34 can still abut against the mounting ring 43 to ensure the sealing performance and rotational stability when the rotating seat 4 is connected to the fixed seat 3.

[0039] like Figure 1-5 As shown, in this embodiment, in order to limit the rotation angle of the rotating seat 4, a plurality of limiting grooves 36 are provided on the side wall of the rotating cavity 33 near the limiting plate 44. A spring piece 45 is fixedly provided on the outer side of the mounting ring 43, that is, on the side of the mounting ring 43 near the limiting groove 36. The spring piece 45 is inclined relative to the mounting ring 43. After the rotating seat 4 rotates to a certain position, the spring piece 45 is inserted into the corresponding limiting groove 36 to limit the rotation of the rotating seat 4.

[0040] The usage process and principle of this utility model are as follows: The connecting pipe 6 on the pressure gauge 1 is threadedly connected to the fixed pipe 5. The bottom of the connecting pipe 6 abuts against the first sealing gasket 42. After connection, the nut 7 is rotated to thread it onto the fixed pipe 5. A second sealing gasket 51 is fixedly provided at the upper end of the fixed pipe 5. After the nut 7 is threadedly connected to the fixed pipe 5, the inner wall of the nut 7 abuts against the second sealing gasket 51. Simultaneously, the nut 7 compresses the second sealing gasket 51, deforming it. The second sealing gasket 51 abuts against the outer wall of the connecting pipe 6. The deformation of the second sealing gasket 51 improves the sealing performance and connection strength when the fixed pipe 5 and the connecting pipe 6 are connected. Depending on the user's viewing angle, the rotating seat 4 is twisted, causing the rotating seat 4 to drive the pressure gauge 1... When the fixed seat 3 is rotated, the two limiting plates 44 are respectively attached to the top and bottom walls of the rotating cavity 33 to prevent the rotating seat 4 from detaching from the fixed seat 3 when it rotates relative to the fixed seat 3. At the same time, the side of the two limiting plates 44 away from the mounting ring 43 is attached to the side wall of the rotating cavity 33 to prevent the rotating seat 4 from shaking during rotation. By setting the spring assembly 35, even if the limiting plates 44 and the mounting ring 43 wear after long-term use, the elastic ring 34 can still abut against the mounting ring 43 to ensure the sealing performance and rotational stability when the rotating seat 4 is connected to the fixed seat 3. After the rotating seat 4 rotates to a certain position, the spring piece 45 is inserted into the corresponding limiting groove 36 to limit the rotation of the rotating seat 4.

[0041] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pressure gauge connection structure, comprising a pressure gauge (1) and a tube body (2), characterized in that: The tube body (2) has a connection hole (21) and a fixed seat (3) connected to the connection hole (21) is fixedly provided on the tube body (2). A rotating seat (4) connected to the connection hole (21) is rotatably provided on the fixed seat (3). A fixed pipe (5) connected to the connection hole (21) is fixedly provided on the side of the rotating seat (4) away from the fixed seat (3). A connecting pipe (6) is fixedly provided at the bottom end of the pressure gauge (1). The connecting pipe (6) is fixedly connected to the fixed pipe (5).

2. The pressure gauge connection structure according to claim 1, characterized in that: The fixed base (3) has a first through hole (31) that communicates with the connecting hole (21), and the rotating base (4) has a second through hole (41) that communicates with the first through hole (31) and the connecting hole (21). The inner diameters of the first through hole (31), the second through hole (41) and the connecting hole (21) are all corresponding to the inner diameter of the connecting pipe (6).

3. The pressure gauge connection structure according to claim 2, characterized in that: The fixing tube (5) is coaxial with the second through hole (41), and the inner diameter of the fixing tube (5) corresponds to the outer diameter of the connecting tube (6).

4. The pressure gauge connection structure according to claim 1, characterized in that: The inner wall of the fixed tube (5) is provided with an internal thread, and the outer wall of the connecting tube (6) is provided with a corresponding external thread.

5. The pressure gauge connection structure according to claim 2, characterized in that: A first sealing gasket (42) is fixedly provided on the outer wall of the rotating seat (4), and the first sealing gasket (42) is located between the inner wall of the fixed tube (5) and the second through hole (41).

6. The pressure gauge connection structure according to claim 1, characterized in that: The upper end of the fixing tube (5) is fitted with a nut (7), which is fitted onto the connecting tube (6) and is threadedly connected to the fixing tube (5).

7. The pressure gauge connection structure according to claim 6, characterized in that: The upper end of the fixed tube (5) is fixedly provided with a second sealing gasket (51), and the inner sidewall of the nut (7) abuts against the second sealing gasket (51).

8. The pressure gauge connection structure according to claim 1, characterized in that: The bottom of the rotating seat (4) is provided with an installation ring (43), and the fixed seat (3) is provided with a corresponding rotating groove (32). The installation ring (43) is rotatably disposed in the rotating groove (32). The fixed seat (3) is also provided with a rotating cavity (33) communicating with the rotating groove (32). The installation ring (43) extends into the rotating cavity (33). The bottom of the installation ring (43) is fixedly provided with two limiting plates (44). The two limiting plates (44) are located on the outside of the installation ring (43). The two limiting plates (44) are respectively attached to the top wall and bottom wall of the rotating cavity (33).

9. A pressure gauge connection structure according to claim 8, characterized in that: An elastic ring (34) is provided inside the rotating cavity (33). The elastic ring (34) is located on the side of the rotating cavity (33) away from the limiting plate (44). The upper and lower sides of the elastic ring (34) are respectively attached to the top wall and bottom wall of the rotating cavity (33). The outer side of the elastic ring (34) abuts against the mounting ring (43). A spring assembly (35) is fixed between the elastic ring (34) and the side wall of the rotating cavity (33).

10. A pressure gauge connection structure according to claim 9, characterized in that: The rotating cavity (33) has multiple limiting grooves (36) on the side wall near the limiting plate (44). A spring piece (45) is fixed on the outer side of the mounting ring (43). The spring piece (45) is inclined relative to the mounting ring (43) and can be inserted into the limiting groove (36).

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