Pressure gauge capable of being disassembled and maintained

Abstract

The utility model relates to the field of pressure gauges, and discloses a detachable and maintainable pressure gauge comprising a housing, the front end of the housing is fixedly connected with an L-shaped buckle, the front end of the housing is rotatably connected with a housing cover, the front end of the housing cover is provided with a plurality of limiting through holes, the inner wall of the housing is fixedly connected with a dial plate, the bottom end of the housing is fixedly connected with a pressure guiding pipe, and the bottom end of the housing is fixedly connected with the pressure guiding pipe. The bottom end of the pressure guiding pipe is fixedly connected with a bent pipe, the right end of the bent pipe is fixedly connected with a first pipe fitting, the outer wall of the first pipe fitting is fixedly connected with a second rubber ring, the right end of the first pipe fitting is provided with a connecting pipe, and the outer wall of the connecting pipe is fixedly connected with a first rubber ring. According to the utility model, through mutual accurate cooperation of the L-shaped buckles and the limiting through holes, after the limiting through holes are aligned with the L-shaped buckles, the shell cover is rotated, and the shell and the shell cover can be tightly spliced together to form a stable protection structure, so that the dial plate is protected, and damage of external factors such as dust and chippings to the dial plate is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the field of pressure gauges, in particular to a detachable and maintainable pressure gauge. Background Art

[0002] Pressure gauges are instruments that use elastic elements as sensitive elements to measure and indicate pressures higher than the ambient pressure. They are widely used in almost all industrial processes and scientific research fields. They can be found everywhere in the fields of thermal pipe networks, oil and gas transmission, water and gas supply systems, and vehicle repair and maintenance shops. Especially in the process of industrial process control and technical measurement, mechanical pressure gauges are increasingly widely used because of their elastic sensitive elements with high mechanical strength and easy production.

[0003] When the pressure gauge is disassembled and repaired, the gauge cover must first be removed from the gauge body, and then the internal parts of the gauge body are disassembled. Auxiliary tools are needed during the disassembly process, which makes it more troublesome for technicians to disassemble the gauge, and the gauge cover glass is easily damaged when prying the gauge cover. In response to this technical problem, the present application proposes a detachable and repairable pressure gauge. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and provides a detachable and maintainable pressure gauge.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a detachable and maintainable pressure gauge, comprising a shell, an L-shaped buckle fixedly connected to the front end of the shell, a shell cover rotatably connected to the front end of the shell, a plurality of limiting through holes are provided at the front end of the shell cover, a dial is fixedly connected to the inner wall of the shell, a pressure guide tube is fixedly connected to the bottom end of the shell, a bent pipe is fixedly connected to the bottom end of the pressure guide tube, a first pipe fitting is fixedly connected to the right end of the bent pipe, a second rubber ring is fixedly connected to the outer wall of the first pipe fitting, a connecting pipe is provided at the right end of the first pipe fitting, and a first rubber ring is fixedly connected to the outer wall of the connecting pipe.

[0006] Furthermore, an upper sleeve is sleeved on the top side of the first rubber ring and the second rubber ring, and a lower sleeve is sleeved on the bottom side of the first rubber ring and the second rubber ring. One end of the upper sleeve and the lower sleeve are connected by a hinge, and an annular groove is formed on the inner wall of the upper sleeve and the lower sleeve.

[0007] Furthermore, the other end of the upper sleeve and the other end of the lower sleeve are both provided with screw holes, screw rods are arranged inside the screw holes, and a nut is threadedly connected to the bottom side of the screw rod.

[0008] Furthermore, the top side of the nut abuts against the bottom side of the other end of the lower sleeve.

[0009] Furthermore, a threaded sleeve is threadedly connected to the right end of the outer wall of the connecting pipe, and a second pipe fitting is threadedly connected to the right end of the inner wall of the threaded sleeve.

[0010] Furthermore, a valve is rotatably connected to the top end of the threaded sleeve.

[0011] Furthermore, a rubber ring is fixedly connected to the rear end of the shell cover.

[0012] Furthermore, a glass sheet is fixedly connected to the inner periphery of the shell cover.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, through the precise cooperation between the L-shaped buckle and the limiting through hole, after aligning the limiting through hole with the L-shaped buckle, the shell cover can be rotated so that the shell and the shell cover can be tightly spliced ​​together to form a stable protective structure, thereby protecting the dial, effectively preventing the dial from being damaged by external factors such as dust and debris, and reducing the need to replace or repair the dial due to damage, thereby reducing resource consumption.

[0015] 2. In the utility model, through the mutual cooperation of the upper sleeve, the lower sleeve, the hinge, the screw and the nut, the screw can be easily rotated off the nut, so that the upper sleeve and the lower sleeve rotate with the hinge as the center, so that the first pipe fitting and the connecting pipe can be easily separated, thereby achieving the effect of easy disassembly and assembly, and the loading and unloading operations between the first pipe fitting and the connecting pipe are simple, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of a detachable and maintainable pressure gauge proposed by the utility model;

[0017] Figure 2 This is a structural diagram of a dial of a detachable and maintainable pressure gauge proposed by the utility model;

[0018] Figure 3 The present invention is a schematic diagram of a sleeve structure of a detachable and maintainable pressure gauge.

[0019] Legend:

[0020] 1. Shell; 2. Shell cover; 3. Glass sheet; 4. L-shaped buckle; 5. Limiting through hole; 6. Pressure-guiding tube; 7. Rubber ring; 8. Bend pipe; 9. First pipe fitting; 10. Upper sleeve; 11. Lower sleeve; 12. Screw; 13. Nut; 14. Connecting pipe; 15. Valve; 16. Threaded sleeve; 17. Second pipe fitting; 18. Dial; 19. First rubber ring; 20. Second rubber ring; 21. Annular groove; 22. Hinge. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Reference Figure 1-3 The utility model provides an embodiment: a detachable and maintainable pressure gauge, comprising a shell 1, an L-shaped buckle 4 is fixedly connected to the front end of the shell 1, a shell cover 2 is rotatably connected to the front end of the shell 1, a plurality of limiting through holes 5 are opened at the front end of the shell cover 2, a dial 18 is fixedly connected to the inner wall of the shell 1, a pressure-guiding pipe 6 is fixedly connected to the bottom end of the shell 1, a bent pipe 8 is fixedly connected to the bottom end of the pressure-guiding pipe 6, a first pipe fitting 9 is fixedly connected to the right end of the bent pipe 8, a second rubber ring 20 is fixedly connected to the outer wall of the first pipe fitting 9, a connecting pipe 14 is provided at the right end of the first pipe fitting 9, and a first rubber ring 19 is fixedly connected to the outer wall of the connecting pipe 14.

[0023] Specifically, after aligning the limiting through hole 5 opened at the front end of the shell cover with the L-shaped buckle 4 fixedly connected to the outer shell 1, the shell cover 2 is rotated to assemble the shell cover 2 and the outer shell 1, so as to protect the dial 18, effectively prevent the damage of external factors such as dust and debris to the dial, and reduce the need for replacement or repair due to damage to the dial, thereby reducing resource consumption. The first rubber ring 19 and the second rubber ring 20 make the first pipe fitting 9 and the connecting pipe 14 connected more tightly.

[0024] The top sides of the first rubber ring 19 and the second rubber ring 20 are sleeved with an upper sleeve 10, and the bottom sides of the first rubber ring 19 and the second rubber ring 20 are sleeved with a lower sleeve 11. One ends of the upper sleeve 10 and the lower sleeve 11 are connected by a hinge 22, and annular grooves 21 are provided on the inner walls of the upper sleeve 10 and the lower sleeve 11. The other ends of the upper sleeve 10 and the other ends of the lower sleeve 11 are provided with screw holes, and screw rods 12 are provided inside the screw holes. The bottom sides of the screw rods 12 are threadedly connected with a nut 13, and the top side of the nut 13 is connected to the bottom side of the other end of the lower sleeve 11. The right end of the outer wall of the connecting pipe 14 is threadedly connected with a threaded sleeve 16, and the right end of the inner wall of the threaded sleeve 16 is threadedly connected with a second pipe fitting 17. The top end of the threaded sleeve 16 is rotatably connected with a valve 15, the rear end of the shell cover 2 is fixedly connected with a rubber ring 7, and the inner periphery of the shell cover 2 is fixedly connected with a glass sheet 3.

[0025] Specifically, the upper sleeve 10 and the lower sleeve 11 are connected by the screw 12 and the nut 13 with the hinge 22 as the center, so that the first pipe fitting 9 and the connecting pipe 14 can be disassembled, thereby achieving the effect of easy disassembly and assembly. The loading and unloading operations between the first pipe fitting 9 and the connecting pipe 14 are simple, thereby improving work efficiency and further reducing the harm to maintenance personnel. The rubber ring 7 fixedly connected to the rear end of the shell cover 2 makes it difficult for water to enter the interior after the outer shell 1 and the shell cover 2 are assembled. The glass piece 3 fixedly connected to the inner periphery of the shell cover 2 protects the surface of the dial from being clean, thereby achieving waterproofing and protection of the dial 18.

[0026] Working principle: When the pressure gauge needs to be disassembled for maintenance, first rotate the valve 15 to block the connecting pipe 14 and the second pipe fitting 17 to block the pressure source, then rotate the nut 13 off the screw 12 to rotate the upper sleeve 10 and the lower sleeve 11 around the hinge 22, so as to separate the upper sleeve 10 and the lower sleeve 11, and then separate the connecting pipe 14 and the first pipe fitting 9, and then remove the entire pressure gauge for maintenance or replacement. When there are stains on the glass sheet 3 on the shell cover 2 and the dial 18 cannot be seen clearly, rotate the shell cover 2 to make the limit through hole 5 opened on the shell cover 2 and the shell cover 2 separate. 1, so as to remove the shell cover 2 for cleaning or replacement. After the entire pressure gauge is repaired or replaced, first align the limit through hole 5 opened on the shell cover 2 with the L-shaped buckle 4 on the shell 1, and then rotate the shell cover 2, assemble the shell 1, the dial 18 and the shell cover 2, and then align the first pipe 9 with the connecting pipe 14, close the upper sleeve 10 and the lower sleeve 11, rotate the nut 13 onto the screw 12, and tighten the upper sleeve 10 and the lower sleeve 11. After a series of operations are completed, the pressure gauge can be reinstalled and resume normal operation to ensure its accuracy and reliability.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A detachable and maintainable pressure gauge, comprising a housing (1), characterized in that: The front end of the shell (1) is fixedly connected to an L-shaped buckle (4); the front end of the shell (1) is rotatably connected to a shell cover (2); the front end of the shell cover (2) is provided with a plurality of limit through holes (5); the inner wall of the shell (1) is fixedly connected to a dial (18); the bottom end of the shell (1) is fixedly connected to a pressure-conducting pipe (6); the bottom end of the pressure-conducting pipe (6) is fixedly connected to a bent pipe (8); the right end of the bent pipe (8) is fixedly connected to a first pipe fitting (9); the outer wall of the first pipe fitting (9) is fixedly connected to a second rubber ring (20); the right end of the first pipe fitting (9) is provided with a connecting pipe (14); the outer wall of the connecting pipe (14) is fixedly connected to a first rubber ring (19).

2. A detachable and maintainable pressure gauge according to claim 1, characterized in that: An upper sleeve (10) is sleeved on the top side of the first rubber ring (19) and the second rubber ring (20), and a lower sleeve (11) is sleeved on the bottom side of the first rubber ring (19) and the second rubber ring (20). One end of the upper sleeve (10) and the lower sleeve (11) are connected by a hinge (22), and the inner walls of the upper sleeve (10) and the lower sleeve (11) are both provided with an annular groove (21).

3. A detachable and maintainable pressure gauge according to claim 2, characterized in that: The other end of the upper sleeve (10) and the other end of the lower sleeve (11) are both provided with screw holes, a screw rod (12) is arranged inside the screw hole, and a nut (13) is threadedly connected to the bottom side of the screw rod (12).

4. A detachable and maintainable pressure gauge according to claim 3, characterized in that: The top side of the nut (13) is abutted against the bottom side of the other end of the lower sleeve (11).

5. The detachable and maintainable pressure gauge according to claim 1, characterized in that: The right end of the outer wall of the connecting pipe (14) is threadedly connected to a threaded sleeve (16), and the right end of the inner wall of the threaded sleeve (16) is threadedly connected to a second pipe member (17).

6. A detachable and maintainable pressure gauge according to claim 5, characterized in that: The top end of the threaded sleeve (16) is rotatably connected to a valve (15).

7. The detachable and maintainable pressure gauge according to claim 1, characterized in that: A rubber ring (7) is fixedly connected to the rear end of the shell cover (2).

8. The detachable and maintainable pressure gauge according to claim 2, characterized in that: A glass sheet (3) is fixedly connected to the inner periphery of the shell cover (2).

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