A precision corrosion-resistant pressure gauge movement

Abstract

This utility model discloses a precision corrosion-resistant pressure gauge movement, including an end cap. A clamping ring is fixedly connected to one side of the end cap, and a glass cover plate is provided on one side of the clamping ring. A connecting tube is fixedly connected to one side of the end cap. One end of the connecting tube is provided with a sealing mechanism for sealing the connection point. A sealing ring is fitted onto the side wall of the connecting tube, and a communication mechanism for internal communication within the connecting tube is provided on the side wall of the connecting tube. An outer tube is fitted onto the side wall of the connecting tube, and an auxiliary mechanism for auxiliary sealing of the connecting tube is provided on the opposite side wall of the outer tube and the connecting tube. This utility model ensures the sealing strength of the connecting tube connection point through the tight fit and installation of the contact groove with the inner sealing groove and the outer sealing groove, combined with the contact and tight sealing method of the inner extension ring. The connection and contact of the outer tube ensures the airtightness of the pressure gauge, preventing the entry of moisture and air from affecting the service life of the movement.

Description

Technical Field

[0001] This utility model relates to the field of measuring instrument technology, and in particular to a precision corrosion-resistant pressure gauge movement. Background Technology

[0002] Pressure measurement is a critical step in ensuring production safety and product quality in many industrial production processes. However, existing pressure gauge mechanisms have revealed numerous shortcomings when faced with complex and corrosive working environments.

[0003] First, poor corrosion resistance and inadequate external sealing of the pressure gauge can lead to moisture and oxidation of the internal movement, severely impacting its lifespan. Additionally, residual air and moisture inside the pressure gauge during assembly can corrode the movement's components, interfering with its lifespan and accuracy. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a precision corrosion-resistant pressure gauge movement.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A precision corrosion-resistant pressure gauge movement includes an end cap, a clamping ring fixedly connected to one side of the end cap, a glass cover plate provided on one side of the clamping ring, a connecting tube fixedly connected to one side of the end cap, a sealing mechanism for sealing the connection of the connecting tube at one end of the connecting tube, a sealing ring sleeved on the side wall of the connecting tube, a communication mechanism for internal communication within the connecting tube on the side wall of the sealing ring, an outer tube sleeved on the side wall of the connecting tube, and an auxiliary mechanism for auxiliary sealing of the connecting tube on the opposite side wall of the outer tube and the connecting tube.

[0007] Preferably, the sealing mechanism includes an outer sealing groove formed on the side wall of the connecting pipe, an inner sealing groove formed on the inner wall of the connecting pipe, and contact grooves formed at both ends of the sealing ring, wherein the contact grooves cooperate with the inner sealing groove and the outer sealing groove.

[0008] Preferably, an inner extension ring is fixedly connected to the inner wall of the sealing ring, and the inner extension ring abuts against one end of the connecting pipe.

[0009] Preferably, the communication mechanism includes a communication tube that passes through and is fixedly connected within the inner extension ring, the communication tube having a sealing tube inside, and a ferrule threadedly connected to the side wall of the communication tube.

[0010] Preferably, the auxiliary mechanism includes a fitting tube fixedly connected to the inner wall of the outer tube, the connecting tube slidably connecting the fitting tube through it, two symmetrically arranged fitting rings fixedly connected to the inner wall of the outer tube, and a fitting groove provided on the side wall of the connecting tube, wherein the fitting rings cooperate with the fitting groove.

[0011] Preferably, a contact ring is fixedly connected to one side of the end cap, and a plurality of circumferentially arranged positioning bolts are threadedly connected to the side wall of the contact ring, with one end of the positioning bolts abutting against the outer side wall of the outer tube.

[0012] Compared with the prior art, the advantages of this utility model are as follows:

[0013] 1. This utility model is equipped with a connecting pipe, an inner sealing groove, an outer sealing groove, a sealing ring, an inner delay, and a contact groove. By fitting and pressing the contact groove with the inner and outer sealing grooves, and with the contact and pressing sealing method of the inner delay ring, the sealing strength of the connecting pipe connection can be guaranteed. With the connection and contact of the outer pipe, the sealing performance of the pressure gauge can be guaranteed, avoiding the problem of water vapor and air entering and affecting the service life of its mechanism.

[0014] 2. This utility model is equipped with an outer tube, a fitting tube, a connecting tube, a sealing tube, and a ferrule. The connecting tube connects the inside of the connecting tube, and a vacuum state can be maintained in the connecting tube after assembly by drawing a vacuum, so as to avoid the problem of oxidation and corrosion of the movement caused by the air and moisture remaining in the connecting tube. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of a precision corrosion-resistant pressure gauge movement proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the clamping ring structure of a precision corrosion-resistant pressure gauge movement proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of the sealing ring structure of a precision corrosion-resistant pressure gauge movement proposed in this utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of the outer tube of a precision corrosion-resistant pressure gauge movement proposed in this utility model.

[0019] In the diagram: 1. End cap, 2. Compression ring, 3. Glass cover plate, 4. Connecting pipe, 5. Outer sealing groove, 6. Inner sealing groove, 7. Fitting groove, 8. Contact ring, 9. Positioning bolt, 10. Sealing ring, 11. Inner extension ring, 12. Contact groove, 13. Connecting pipe, 14. Sealing pipe, 15. Compression sleeve, 16. Outer pipe, 17. Fitting pipe, 18. Fitting ring. Detailed Implementation

[0020] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] Reference Figure 1-4 A precision corrosion-resistant pressure gauge movement includes an end cap 1, a clamping ring 2 fixedly connected to one side of the end cap 1, a glass cover plate 3 provided on one side of the clamping ring 2, a connecting pipe 4 fixedly connected to one side of the end cap 1, a sealing mechanism for sealing the connection of the connecting pipe 4 at one end, the sealing mechanism including an outer sealing groove 5 opened on the side wall of the connecting pipe 4, an inner sealing groove 6 opened on the inner wall of the connecting pipe 4, and contact grooves 12 opened at both ends of the sealing ring 10, the contact grooves 12 cooperating with the inner sealing groove 6 and the outer sealing groove 5.

[0022] A sealing ring 10 is fitted on the side wall of the connecting pipe 4. An inner extension ring 11 is fixedly connected to the inner wall of the sealing ring 10. The inner extension ring 11 abuts against one end of the connecting pipe 4. The side wall of the sealing ring 10 is provided with a communication mechanism for communication within the connecting pipe 4. The communication mechanism includes a communication pipe 13 that passes through and is fixedly connected within the inner extension ring 11. A sealing pipe 14 is provided inside the communication pipe 13. A ferrule 15 is threadedly connected to the side wall of the communication pipe 13.

[0023] The side wall of the connecting pipe 4 is fitted with an outer pipe 16, and a contact ring 8 is fixedly connected to one side of the end cap 1. The side wall of the contact ring 8 is threaded with multiple circumferentially arranged positioning bolts 9, and one end of the positioning bolts 9 is pressed against the outer side wall of the outer pipe 16.

[0024] The outer tube 16 and the connecting tube 4 are provided with an auxiliary mechanism for auxiliary sealing of the connecting tube 4. The auxiliary mechanism includes a fitting tube 17 fixedly connected to the inner wall of the outer tube 16. The connecting tube 13 passes through and slides through the fitting tube 17. The inner wall of the outer tube 16 is fixedly connected with two symmetrically arranged fitting rings 18. The side wall of the connecting tube 4 is provided with a fitting groove 7, and the fitting rings 18 cooperate with the fitting groove 7.

[0025] When using this utility model, such as Figure 1-4As shown, during use, first connect and install the connecting pipe 4 to the back cover of the pressure gauge. At this time, the sealing ring 10 is placed between the connecting pipe 4 and the back cover. Insert the contact groove 12 into the end of the connecting pipe 4. At this time, the two sides of the contact groove 12 are in contact with the outer sealing groove 5 and the inner sealing groove 6 respectively, and the other side of the contact groove 12 is in contact with the back cover. The connection of the connecting pipe 4 can be sealed by the back cover pressing against it. At the same time, the inner extension ring 11 is used to compress and deform the connection between the connecting pipe 4 and the back cover to seal it, which can further ensure the sealing of the connection between the connecting pipe 4 and the back cover, thereby effectively preventing air and moisture from entering the connecting pipe 4 and causing oxidation and corrosion to the pressure gauge movement. Then, install the outer tube 16 on the side wall of the connecting pipe 4 and the back cover. At this time, the fitting ring 18 on the inner wall of the outer tube 16 fits the fitting groove 7. The outer tube 16 further protects the outside of the connecting tube 4, preventing it from being affected by airtightness. At the same time, one end of the outer tube 16 extends into the contact ring 8, and then the outer tube 16 is positioned and fixed by multiple positioning bolts 9 against the side wall of the outer tube 16, ensuring the installation stability of the outer tube 16. During this process, the connecting tube 13 passes through the fitting tube 17, and the external vacuum pump is connected to the connecting tube 13 through the pipeline to perform vacuum treatment in the connecting tube 4. At this time, the sealing tube 14 can seal the connection between the connecting tube 13 and the external pipeline, and the clamp 15 can connect the external pipeline to ensure the stability of the vacuum process in the connecting tube 4. By vacuuming the connecting tube 4, the problem of residual air and moisture in the connecting tube 4 causing oxidation and corrosion to the movement can be avoided.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A precision corrosion-resistant pressure gauge movement, comprising an end cap (1), characterized in that, A clamping ring (2) is fixedly connected to one side of the end cap (1). A glass cover plate (3) is provided on one side of the clamping ring (2). A connecting pipe (4) is fixedly connected to one side of the end cap (1). A sealing mechanism for sealing the connection of the connecting pipe (4) is provided at one end of the connecting pipe (4). A sealing ring (10) is sleeved on the side wall of the connecting pipe (4). A communication mechanism for communicating inside the connecting pipe (4) is provided on the side wall of the connecting pipe (4). An outer tube (16) is sleeved on the side wall of the connecting pipe (4). An auxiliary mechanism for auxiliary sealing of the connecting pipe (4) is provided on the opposite side wall of the outer tube (16) and the connecting pipe (4).

2. The precision corrosion-resistant pressure gauge movement according to claim 1, characterized in that, The sealing mechanism includes an outer sealing groove (5) on the side wall of the connecting pipe (4), an inner sealing groove (6) on the inner wall of the connecting pipe (4), and contact grooves (12) on both ends of the sealing ring (10). The contact grooves (12) cooperate with the inner sealing groove (6) and the outer sealing groove (5).

3. The precision corrosion-resistant pressure gauge movement according to claim 2, characterized in that, The inner wall of the sealing ring (10) is fixedly connected to an inner extension ring (11), and the inner extension ring (11) abuts against one end of the connecting pipe (4).

4. The precision corrosion-resistant pressure gauge movement according to claim 3, characterized in that, The communication mechanism includes a communication pipe (13) that is fixedly connected to the inner extension ring (11), and a sealing pipe (14) is provided inside the communication pipe (13). A ferrule (15) is threadedly connected to the side wall of the communication pipe (13).

5. The precision corrosion-resistant pressure gauge movement according to claim 4, characterized in that, The auxiliary mechanism includes a fitting tube (17) fixedly connected to the inner wall of the outer tube (16), the connecting tube (13) slides through the fitting tube (17), the inner wall of the outer tube (16) is fixedly connected to two symmetrically arranged fitting rings (18), the side wall of the connecting tube (4) is provided with a fitting groove (7), and the fitting rings (18) cooperate with the fitting grooves (7).

6. The precision corrosion-resistant pressure gauge movement according to claim 5, characterized in that, A contact ring (8) is fixedly connected to one side of the end cap (1). A plurality of circumferentially arranged positioning bolts (9) are threaded through the side wall of the contact ring (8). One end of the positioning bolts (9) abuts against the outer side wall of the outer tube (16).

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