Cleanable pressure gauge convenient to disassemble and assemble

Abstract

The utility model relates to the technical field of pressure gauges, and discloses a cleanable pressure gauge convenient to disassemble and assemble, which comprises a pressure gauge main body, a high-pressure gauge head is arranged on the pressure gauge main body, a low-pressure gauge head is arranged on one side of the pressure gauge main body, a first connecting pipe is arranged on one side of the pressure gauge main body, and a second connecting pipe is arranged on the other side of the pressure gauge main body. A movable nut is rotatably connected to one side of the first connecting pipe, a circular groove is formed in the top of the pressure gauge body, and a valve adjusting rod is slidably connected into the circular groove. According to the cleanable pressure gauge convenient to disassemble and assemble, when a user rotates a plug into the pressure gauge main body through a thread to form fixation, and then the surface of a second connecting pipe is connected with a connecting sleeve, when the user uses the pressure gauge main body for many times or for a long time, sundries are left to form blockage; and the valve core in the pressure gauge main body can be cleaned by rotating the plug, so that the valve can be smoothly opened and closed in the operation process, and the fault rate is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure gauges, in particular to a detachable and cleanable pressure gauge which is convenient for disassembly and assembly. Background Technique

[0002] A pressure gauge refers to an instrument that uses an elastic element as a sensitive element to measure and indicate the pressure higher than the ambient pressure. It is widely used and almost covers all industrial processes and scientific research fields.

[0003] The Chinese patent discloses a pressure gauge (authorization publication number CN204649343U). The patented technology passes through a C-shaped spring tube, a plug, a first connecting rod, a second connecting rod, and a horizontally arranged U-shaped transmission rod connected in sequence. One end of the opening direction of the transmission rod is connected to the pointer, and the end connected to the pointer is located above the other end. One end of the spring tube is fixed on the joint. When the measured medium pressure value is small, the measurement accuracy can be improved.

[0004] In view of the above and related existing technologies, the inventor believes that there are often the following defects: Most of the existing pressure gauges rely on the action of external pressure to drive the internal mechanism to accurately display the pressure value. When these gases flow through the surface or internal channels of the pressure gauge, a large amount of sediment may be generated due to chemical reactions, physical condensation, or impurity carrying. With the accumulation of time, these sediments will gradually block the measurement channels of the pressure gauge, affect the flexibility of the moving parts, and even directly adhere to the pressure sensing element, resulting in distorted readings or complete failure of the pressure gauge. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is that in the prior art, the long-term accumulation of gas will gradually block the measurement channels of the pressure gauge, affect the flexibility of the moving parts, and even directly adhere to the pressure sensing element, resulting in distorted readings or complete failure of the pressure gauge. For this reason, we propose a detachable and cleanable pressure gauge that is convenient for disassembly and assembly.

[0006] In order to achieve the above purpose, the present application adopts the following technical solution: A detachable and cleanable pressure gauge, including a pressure gauge main body, a high-pressure gauge head is installed on the pressure gauge main body, a low-pressure gauge head is installed on one side of the pressure gauge main body, a first connecting pipe is installed on one side of the pressure gauge main body, a movable nut is rotatably connected to one side of the first connecting pipe, a circular groove is opened at the top of the pressure gauge main body, a valve adjusting rod is slidably connected inside the circular groove, a first threaded hexagonal rod is threadedly connected inside the pressure gauge main body, a knob cap is fixed at the top of the first threaded hexagonal rod, a plug is threadedly connected inside the bottom of the pressure gauge main body, a second connecting pipe is installed on one side of the pressure gauge main body, and a connecting sleeve is threadedly connected to the surface of the second connecting pipe.

[0007] Preferably, a hexagonal groove is formed at the bottom of the plug, the bottom of the first threaded hexagonal rod is a hexagonal head, and the surface of the first threaded hexagonal rod is slidably connected to the inside of the hexagonal groove.

[0008] Preferably, a sealing ring is installed between the top of the plug and one side inside the pressure gauge body.

[0009] Preferably, an auxiliary knob is fixed to one side of the movable nut, and the inside of the auxiliary knob is rotatably connected to the surface of the first connecting pipe.

[0010] Preferably, a regulating valve is installed on the surface of the circular groove.

[0011] Preferably, the connecting sleeve is a double-threaded connecting pipe.

[0012] Preferably, plastic sleeves are installed on the surfaces of the high-pressure gauge head and the low-pressure gauge head.

[0013] Technical effects and advantages of the present utility model:

[0014] In the present utility model, when the user rotates the plug into the inside of the pressure gauge body through threads to form a fixation, and then connects the surface of the second connecting pipe with the connecting sleeve, when the first threaded hexagonal rod rotates, it will push the valve adjusting rod to adjust the air pressure. When the air pressure is adjusted, stop rotating the knob cap. When the user uses the pressure gauge body multiple times or for a long time, sundries will remain and form a blockage. By rotating the plug, the user can clean the valve core inside the pressure gauge body, avoiding the gradual blockage of the measurement channel of the pressure gauge and the influence on the flexibility of the moving parts due to the accumulation of sediment during long-term use of the pressure gauge. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the front view of the present utility model;

[0016] Figure 2 is the schematic diagram of the detachable structure of the present utility model;

[0017] Figure 3 is the cross-sectional view of the structure of the first threaded hexagonal rod of the present utility model;

[0018] Figure 4 is the cross-sectional view of the structure of the sealing ring of the present utility model;

[0019] Figure 5 is the cross-sectional view of the structure of the connecting sleeve of the present utility model.

[0020] Legend: 1. Pressure gauge body; 2. High-pressure gauge head; 3. Low-pressure gauge head; 4. First connecting pipe; 5. Auxiliary knob; 6. Round groove; 7. First threaded hexagonal rod; 8. Knob cap; 9. Regulating valve; 10. Connecting sleeve; 11. Plug; 12. Sealing ring; 13. Valve adjusting rod; 14. Movable nut; 15. Plastic sleeve; 16. Second connecting pipe; 17. Hexagonal groove. Detailed implementation mode

[0021] Now, in combination with the attached drawings and preferred embodiments, the present invention will be further described in detail. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0022] Refer to Figures 1 - 5 As shown, the present invention provides a technical solution: a detachable and cleanable pressure gauge, including a pressure gauge body 1, a high-pressure gauge head 2 is installed on the pressure gauge body 1, a low-pressure gauge head 3 is installed on one side of the pressure gauge body 1, a first connecting pipe 4 is installed on one side of the pressure gauge body 1, a movable nut 14 is rotatably connected to one side of the first connecting pipe 4, a round groove 6 is opened at the top of the pressure gauge body 1, a valve adjusting rod 13 is slidably connected inside the round groove 6, a first threaded hexagonal rod 7 is threadedly connected inside the pressure gauge body 1, a knob cap 8 is fixed at the top of the first threaded hexagonal rod 7, a plug 11 is threadedly connected inside the bottom of the pressure gauge body 1, a second connecting pipe 16 is installed on one side of the pressure gauge body 1, a connecting sleeve 10 is threadedly connected to the surface of the second connecting pipe 16. When the user rotates the plug 11 into the pressure gauge body 1 through threads to form a fixation, then connects the surface of the second connecting pipe 16 with the connecting sleeve 10, connects the other end of the connecting sleeve 10 with the equipment pipeline, and then rotates the movable nut 14 to connect the first connecting pipe 4 with the gas cylinder. The gas in the gas cylinder enters the inside of the pressure gauge body 1 through the first connecting pipe 4, and the air pressure state is displayed through the high-pressure gauge head 2 and the low-pressure gauge head 3. When the air pressure is unstable, the knob cap 8 is rotated to drive the first threaded hexagonal rod 7 to rotate. When the first threaded hexagonal rod 7 rotates, it will push the valve adjusting rod 13 to adjust the air pressure. When the air pressure is adjusted, the rotation of the knob cap 8 is stopped. When the user uses the pressure gauge body 1 for multiple times or for a long time, sundries will remain and cause blockage. By rotating the plug 11, the user can clean the valve core inside the pressure gauge body 1, so that the valve can be smoothly opened and closed during operation, reducing the failure rate.

[0023] Refer to Figure 3 With Figure 4As shown in the figure, in this implementation scheme: a hexagonal groove 17 is opened at the bottom of the plug 11, the bottom of the first threaded hexagonal rod 7 is a hexagonal head, and the surface of the first threaded hexagonal rod 7 is slidably connected to the inside of the hexagonal groove 17. When the user needs to clean the valve core, by rotating the surface of the first threaded hexagonal rod 7 out of the inside of the pressure gauge main body 1, and then inserting the hexagonal head at the bottom of the first threaded hexagonal rod 7 into the inside of the hexagonal groove 17 to remove the plug 11, it reduces the user's need to use other tools when removing the plug 11 and avoids delaying the time to remove the plug 11 when the tools are incomplete.

[0024] Refer to Figure 4 As shown in the figure, in this implementation scheme: a sealing ring 12 is installed between the top of the plug 11 and one side inside the pressure gauge main body 1. When the plug 11 is rotated into the inside of the pressure gauge main body 1, the characteristics of the sealing ring 12 can make the airtightness inside the pressure gauge main body 1 better, preventing phenomena such as air leakage from affecting the use efficiency.

[0025] Refer to Figure 2 As shown in the figure, in this implementation scheme: an auxiliary knob 5 is fixed on one side of the movable nut 14, and the inside of the auxiliary knob 5 is rotatably connected to the surface of the first connecting pipe 4. When the user needs to rotate the movable nut 14, it can be directly rotated through the auxiliary knob 5 without using other tools to rotate the movable nut 14, reducing the user's operation and avoiding the situation where the movable nut 14 cannot be rotated when the tools are incomplete, which affects the efficiency.

[0026] Refer to Figure 2 As shown in the figure, in this implementation scheme: a regulating valve 9 is installed on the surface of the circular groove 6. By installing the regulating valve 9 on the surface of the second connecting pipe 16, the pressure gauge main body 1 can perform a sealing test before being connected to the equipment, without the need to block one side of the second connecting pipe 16, reducing the operation time.

[0027] Refer to Figure 2 As shown in the figure, in this implementation scheme: the connecting sleeve 10 is a double - threaded connecting pipe. When the user uses the connecting sleeve 10 as a double - threaded connecting pipe, the second connecting pipe 16 can be quickly connected to the equipment.

[0028] Refer to Figure 1 As shown in the figure, in this implementation scheme: plastic sleeves 15 are installed on the surfaces of both the high - pressure gauge head 2 and the low - pressure gauge head 3. By installing plastic sleeves 15 on the surfaces of both the high - pressure gauge head 2 and the low - pressure gauge head 3, it can reduce the damage of the glass mirrors of the high - pressure gauge head 2 and the low - pressure gauge head 3 due to accidental touch or drop, and avoid the situation where the damaged high - pressure gauge head 2 and low - pressure gauge head 3 cannot be used.

[0029] Working principle: The user fixes the plug 11 inside the pressure gauge main body 1 by rotating it through threads. Then, connect the surface of the second connecting pipe 16 with the connecting sleeve 10, and connect the other end of the connecting sleeve 10 with the equipment pipeline. Next, rotate the movable nut 14 to connect the first connecting pipe 4 with the gas cylinder. The gas in the gas cylinder enters the inside of the pressure gauge main body 1 through the first connecting pipe 4, and the high-pressure gauge head 2 and the low-pressure gauge head 3 display the air pressure state. When the air pressure is unstable, rotate the knob cap 8 to drive the first threaded hexagonal rod 7 to rotate. When the first threaded hexagonal rod 7 rotates, it will push the valve adjusting rod 13 to adjust the air pressure. Stop rotating the knob cap 8 when the air pressure is adjusted. When the user needs to clean the valve core, rotate the surface of the first threaded hexagonal rod 7 out of the inside of the pressure gauge main body 1, and then insert the hexagonal head at the bottom of the first threaded hexagonal rod 7 into the hexagonal groove 17 to take out the plug 11. When the plug 11 is rotated into the inside of the pressure gauge main body 1, the airtightness inside the pressure gauge main body 1 can be better due to the characteristics of the sealing ring 12. When the user needs to rotate the movable nut 14, it can be directly rotated through the auxiliary knob 5 without using other tools to rotate the movable nut 14. An adjusting valve 9 is installed on the surface of the second connecting pipe 16, which can perform a sealing test on the pressure gauge main body 1 before connecting with the equipment, without needing to block one side of the second connecting pipe 16. When the user uses the connecting sleeve 10 as a double-threaded connecting pipe, the second connecting pipe 16 can be quickly connected with the equipment. Plastic sleeves 15 are installed on the surfaces of the high-pressure gauge head 2 and the low-pressure gauge head 3, which can reduce the damage to the glass mirrors of the high-pressure gauge head 2 and the low-pressure gauge head 3 caused by accidental touch or drop.

[0030] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cleanable pressure gauge that is easy to disassemble and assemble, comprising a pressure gauge body (1), characterized in that: The pressure gauge body (1) is provided with a high-pressure gauge head (2), a low-pressure gauge head (3) is provided on one side of the pressure gauge body (1), a first connecting pipe (4) is provided on one side of the pressure gauge body (1), a movable nut (14) is rotatably connected to one side of the first connecting pipe (4), a circular groove (6) is provided on the top of the pressure gauge body (1), a valve regulating rod (13) is slidably connected inside the circular groove (6), a first threaded hexagonal rod (7) is connected to the internal thread of the pressure gauge body (1), a knob cap (8) is fixed to the top of the first threaded hexagonal rod (7), a plug (11) is connected to the internal thread of the bottom of the pressure gauge body (1), a second connecting pipe (16) is provided on one side of the pressure gauge body (1), a connecting sleeve (10) is threadedly connected to the surface of the second connecting pipe (16).

2. The easily disassembled and cleanable pressure gauge according to claim 1, characterized in that: The bottom of the plug (11) is provided with a hexagonal groove (17), the bottom of the first threaded hexagonal rod (7) is a hexagonal head, and the surface of the first threaded hexagonal rod (7) is slidably connected to the inside of the hexagonal groove (17).

3. The easily disassembled and cleanable pressure gauge according to claim 1, characterized in that: A sealing ring (12) is installed between the top of the plug (11) and one side inside the pressure gauge body (1).

4. The easily disassembled and cleanable pressure gauge according to claim 1, characterized in that: An auxiliary knob (5) is fixed to one side of the movable nut (14), and the interior of the auxiliary knob (5) is rotatably connected to the surface of the first connecting pipe (4).

5. The easily disassembled and cleanable pressure gauge according to claim 1, characterized in that: A regulating valve (9) is installed on the surface of the circular groove (6).

6. The easily disassembled and cleanable pressure gauge according to claim 1, characterized in that: The connecting sleeve (10) is a double-threaded connecting pipe.

7. The easily disassembled and cleanable pressure gauge according to claim 1, characterized in that: Plastic sleeves (15) are installed on the surfaces of the high-pressure gauge head (2) and the low-pressure gauge head (3).

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