Pressure gauge buffer equipment convenient to disassemble and assemble

Abstract

The utility model relates to the technical field of pressure gauge buffering, and discloses a pressure gauge buffering device convenient to disassemble and assemble, which comprises a pressure gauge body, the bottom end of the pressure gauge body is in threaded connection with a buffering cylinder, the bottom end of the buffering cylinder is fixedly connected with an external threaded pipe, and the external threaded pipe is in threaded connection with a pipeline. And a closed structure is arranged on the arc-shaped outer surface of the buffer cylinder. By arranging the sealing mechanism, in the process that the buffer cylinder is screwed to the pipeline, due to the relative rotation between the buffer cylinder and the pipeline, the rotating ring is driven to rotate until the bottom end of the silica gel cover makes contact with the outer surface of the pipeline, and at the moment, the sealing mechanism rotates continuously along with continuous rotation of the buffer cylinder; and meanwhile, due to the arrangement of the volute spiral spring, the silica gel cover and the pipeline are kept to be tightly attached, and a good protection effect on the connecting part between the buffer cylinder and the pipeline is achieved while disassembly and assembly are convenient.

Description

Technical Field

[0001] This utility model relates to the field of pressure gauge buffer technology, specifically a pressure gauge buffer device that is easy to assemble and disassemble. Background Technology

[0002] A pressure gauge is an instrument that uses an elastic element as its sensing element to measure and indicate pressures higher than the ambient pressure. Due to the high mechanical strength and ease of production of the elastic sensing element in mechanical pressure gauges, they are increasingly widely used. However, when a pressure gauge starts measuring, the impact force of the fluid being measured is often higher than the normal pressure, which can easily damage the measuring element of the pressure gauge. Therefore, a buffer device is usually required when installing a pressure gauge.

[0003] According to a pressure gauge with a buffer structure published in the above application (publication number: CN209802585U), the fluid is sufficiently slowed down in the protective sleeve through the cooperation of the buffer mechanism and the spiral conduit, reducing the impact force, so that the impact force on the pointer at the moment of measurement is close to the static pressure after the measurement stabilizes.

[0004] However, in actual use, the pressure gauge's buffer structure lacks protective components at the connection between the buffer structure and the pipeline during installation. Even when silicone or rubber gaskets are placed during threaded connection, the connection between the buffer structure and the pipeline remains exposed. This can affect the removal and normal use of the pressure gauge after prolonged operation, making it difficult to disassemble and reinstall quickly. Therefore, we propose a pressure gauge buffer device that is easy to disassemble and install. Summary of the Invention

[0005] The purpose of this invention is to provide a pressure gauge buffer device that is easy to assemble and disassemble, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pressure gauge buffer device that is easy to assemble and disassemble, comprising a pressure gauge body, a buffer cylinder threadedly connected to the bottom end of the pressure gauge body, an externally threaded pipe fixedly connected to the bottom end of the buffer cylinder, a pipe threadedly connected to the externally threaded pipe, and a closed structure provided on the arc-shaped outer surface of the buffer cylinder, the closed structure comprising:

[0007] A rotating ring is provided in the inner part of the rotating ring. An arc-shaped groove is provided on the arc-shaped outer surface of the buffer cylinder. A rotating ring is provided inside the arc-shaped groove. A connecting ring is rotatably installed inside the rotating groove.

[0008] A spiral spring is fixedly connected between the arcuate inner surface of the connecting ring and the arcuate outer surface of the rotating groove.

[0009] A silicone cover is fixedly connected to the arc-shaped outer surface of the connecting ring, and an elastic telescopic rod is fixedly connected to the lower surface of the rotating ring. A wave groove is formed on the bottom surface of the silicone cover.

[0010] Preferably, the top end of the buffer cylinder is provided with a threaded hole, and the bottom end of the pressure gauge body is provided with a connecting end that can be threadedly connected to the threaded hole, so as to facilitate the installation between the pressure gauge body and the buffer cylinder.

[0011] Preferably, the height of the arc-shaped groove is greater than the thickness of the rotating ring, and the number of elastic telescopic rods is provided in multiple sets, with the multiple sets of elastic telescopic rods evenly distributed in a circumferential array on the lower surface of the rotating ring.

[0012] Preferably, the upper and lower outer surfaces of the connecting ring are provided with protruding rings, and the inner surface of the rotating groove is provided with an annular groove that matches the protruding rings, so as to ensure the stability of the relative movement between the connecting ring and the rotating ring.

[0013] Preferably, the wave grooves are arranged in a circular shape at the bottom of the silicone cover, and the wave grooves are connected end to end, so that the bottom of the silicone cover is set to a state of varying thickness.

[0014] Preferably, the bottom of the arc-shaped groove has a groove with a diameter that matches the maximum outer diameter of the elastic telescopic rod, so as to facilitate the installation of the elastic telescopic rod.

[0015] Compared with the prior art, this utility model provides a pressure gauge buffer device that is easy to assemble and disassemble, and has the following beneficial effects:

[0016] 1. This easy-to-install and disassemble pressure gauge buffer device, through the setting of a sealing mechanism, during the process of tightening the buffer cylinder onto the pipeline, the relative rotation between the buffer cylinder and the pipeline drives the rotating ring to rotate until the bottom end of the silicone cover contacts the outer surface of the pipeline. At this time, due to the contact between the bottom end of the elastic telescopic rod and the pipeline surface, the rotating ring will move upward along the arc groove. As the buffer cylinder continues to rotate, the silicone cover rotates until it is completely sucked onto the surface of the pipeline without shifting. At the same time, due to the setting of the spiral spring, the silicone cover and the pipeline remain tightly attached, which facilitates disassembly and assembly while providing a good protection effect for the connection between the buffer cylinder and the pipeline.

[0017] 2. This easy-to-install and disassemble pressure gauge buffer device has a corrugated groove at the bottom of the silicone cover, so that the bottom of the silicone cover is set to a state of varying thickness. This allows the silicone cover to better adhere to the outer surface of the pipe when it rotates with the connecting ring, thus preventing the silicone cover from shifting. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0019] Figure 2 This is a schematic diagram of the explosion of the buffer cylinder and silicone cover of this utility model;

[0020] Figure 3 This is a schematic diagram of the bottom structure of the silicone cover of this utility model;

[0021] Figure 4 This is an exploded view of the rotating ring, spiral spring, and connecting ring of this utility model.

[0022] In the diagram: 1. Pressure gauge body; 2. Buffer cylinder; 3. External threaded pipe; 4. Pipe; 5. Rotating ring; 6. Scroll spring; 7. Connecting ring; 8. Silicone cover; 9. Elastic telescopic rod; 10. Wave groove. Detailed Implementation

[0023] like Figures 1-4 As shown, this utility model provides a technical solution: a pressure gauge buffer device that is easy to assemble and disassemble, including a pressure gauge body 1, a buffer cylinder 2 threadedly connected to the bottom end of the pressure gauge body 1, an external threaded pipe 3 fixedly connected to the bottom end of the buffer cylinder 2, a pipe 4 threadedly connected to the external threaded pipe 3, and a closed structure provided on the arc-shaped outer surface of the buffer cylinder 2, the closed structure including a rotating ring 5, a connecting ring 7, a spiral spring 6, a silicone cover 8, an elastic telescopic rod 9, and a wave groove 10.

[0024] In one embodiment of this utility model, an arc-shaped groove is formed on the arc-shaped outer surface of the buffer cylinder 2, and a rotating ring 5 is provided inside the arc-shaped groove. A rotating groove is formed on the arc-shaped outer wall of the rotating ring 5, and a connecting ring 7 is rotatably installed inside the rotating groove. A spiral spring 6 is fixedly connected between the arc-shaped inner surface of the connecting ring 7 and the arc-shaped outer surface of the rotating groove. A silicone cover 8 is fixedly connected to the arc-shaped outer surface of the connecting ring 7. An elastic telescopic rod 9 is fixedly connected to the lower surface of the rotating ring 5, and a wave groove 10 is formed on the bottom surface of the silicone cover 8.

[0025] Specifically, the top of the buffer cylinder 2 is provided with a threaded hole, and the bottom of the pressure gauge body 1 is provided with a connecting end that can be threaded to the threaded hole to facilitate the installation between the pressure gauge body 1 and the buffer cylinder 2. At the same time, a deceleration component is provided inside the buffer cylinder 2 to buffer the impact of the medium transported in the pipeline 4 on the buffer cylinder 2, thereby protecting the elastic element inside the pressure gauge body 1 and ensuring the measurement accuracy of the pressure gauge body 1. Furthermore, the height of the arc groove is greater than the thickness of the rotating ring 5, and multiple sets of elastic telescopic rods 9 are provided, and the multiple sets of elastic telescopic rods 9 are evenly distributed in a circumferential array on the lower surface of the rotating ring 5. Specifically, the bottom of the arc groove is provided with a groove with a diameter that matches the maximum outer diameter of the elastic telescopic rod 9 to facilitate the installation of the elastic telescopic rod 9 and to ensure the stability of the rotating ring 5 in the arc groove.

[0026] In this embodiment of the invention, protruding rings are provided on the upper and lower outer surfaces of the connecting ring 7, and annular grooves adapted to the protruding rings are provided on the inner surface of the rotating groove. This ensures that the connecting ring 7 and the rotating ring 5 can only rotate relative to each other and will not have relative displacement in the horizontal direction, thus ensuring the stability of the relative movement between the connecting ring 7 and the rotating ring 5. At the same time, the spiral spring 6 is sleeved inside the rotating groove, so that the spiral spring 6 has a tendency to rotate in the opposite direction and achieve a reset motion when the connecting ring 7 rotates. Furthermore, a circular mounting groove adapted to the connecting ring 7 is provided on the top of the silicone cover 8 to facilitate the installation between the connecting ring 7 and the silicone cover 8. In addition, the wave groove 10 is arranged in a circular shape at the bottom of the silicone cover 8, and the wave groove 10 is connected end to end. Specifically, the wave groove 10 is set to make the bottom of the silicone cover 8 have a different thickness, so that the silicone cover 8 can better keep in close contact with the outer surface of the pipe 4 when the silicone cover 8 rotates with the connecting ring 7, thus preventing the silicone cover 8 from shifting.

[0027] In this invention, during use, the pressure gauge body 1 is screwed onto the threaded hole at the top of the buffer cylinder 2 via the connecting end at its bottom. Then, the external threaded tube 3 is aligned with the mounting part at the top of the pipe 4, completing the installation of the pressure gauge body 1, buffer cylinder 2, and pipe 4. When measuring the pressure of the medium flowing in the pipe 4, the buffer cylinder 2 ensures that the pressure gauge body 1 is not damaged by excessive instantaneous impact, while also maintaining the measurement accuracy of the pressure gauge body 1. Simultaneously, the sealing mechanism ensures that the process of screwing the buffer cylinder 2 onto the pipe 4... During operation, the relative rotation between the buffer cylinder 2 and the pipe 4 causes the rotating ring 5 to rotate until the bottom end of the silicone cover 8 contacts the outer surface of the pipe 4. At this point, due to the contact between the bottom end of the elastic telescopic rod 9 and the surface of the pipe 4, the rotating ring 5 moves upward along the arc groove. As the buffer cylinder 2 continues to rotate, the silicone cover 8 rotates until it is completely adhered to the surface of the pipe 4 without shifting. At the same time, due to the setting of the spiral spring 6, the silicone cover 8 and the pipe 4 remain tightly attached, which facilitates disassembly and assembly while providing good protection for the connection between the buffer cylinder 2 and the pipe 4.

[0028] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A pressure gauge buffer device that is easy to assemble and disassemble, comprising a pressure gauge body (1), wherein a buffer cylinder (2) is threadedly connected to the bottom end of the pressure gauge body (1), and an externally threaded pipe (3) is fixedly connected to the bottom end of the buffer cylinder (2), wherein a pipe (4) is threadedly connected to the externally threaded pipe (3), characterized in that: The buffer cylinder (2) has a closed structure on its arc-shaped outer surface, the closed structure comprising: Rotating ring (5), an arc groove is provided on the arc-shaped outer surface of the buffer cylinder (2), a rotating ring (5) is provided inside the arc groove, a rotating groove is provided on the arc-shaped outer wall of the rotating ring (5), and a connecting ring (7) is rotatably installed inside the rotating groove. A spiral spring (6) is fixedly connected between the arc-shaped inner surface of the connecting ring (7) and the arc-shaped outer surface of the rotating groove. A silicone cover (8) is fixedly connected to the arc-shaped outer surface of the connecting ring (7), and an elastic telescopic rod (9) is fixedly connected to the lower surface of the rotating ring (5). A wave groove (10) is opened on the bottom surface of the silicone cover (8).

2. A pressure gauge cushioning apparatus according to claim 1, wherein: The top of the buffer cylinder (2) is provided with a threaded hole, and the bottom of the pressure gauge body (1) is provided with a connecting end that can be threadedly connected to the threaded hole.

3. A pressure gauge cushioning apparatus for easy assembly and disassembly according to claim 1, characterized in that: The height of the arc groove is greater than the thickness of the rotating ring (5), and the number of elastic telescopic rods (9) is set in multiple sets, and the multiple sets of elastic telescopic rods (9) are evenly distributed in a circular array on the lower surface of the rotating ring (5).

4. The pressure gauge cushioning apparatus of claim 1, wherein: The upper and lower outer surfaces of the connecting ring (7) are provided with protruding rings, and the inner surface of the rotating groove is provided with an annular groove that matches the protruding rings.

5. A pressure gauge cushioning apparatus for easy assembly and disassembly according to claim 1, characterized in that: The wave groove (10) is arranged in a circular shape at the bottom of the silicone cover (8), and the wave groove (10) is connected end to end.

6. A pressure gauge cushioning apparatus for easy assembly and disassembly according to claim 1, characterized in that: The bottom of the arc-shaped groove has a groove with a diameter that matches the maximum outer diameter of the elastic telescopic rod (9).

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