Pressure gauge for air pressure detection

Abstract

The utility model belongs to the technical field of pressure gauges, and particularly relates to a pressure gauge for air pressure detection, which comprises a pressure gauge body and a pointer arranged in the pressure gauge body, the bottom of the pressure gauge body is connected with a supporting tube, the bottom end of the supporting tube is provided with a threaded head, and a protective lens is fixedly arranged in the pressure gauge body. The protective lens is located on one side of the pointer, a supporting frame is fixedly installed on the pressure gauge body, and a cylinder is movably installed on the supporting frame. According to the utility model, impurities adsorbed on the dial plate of the pressure gauge for air pressure detection can be conveniently removed through the mounted cleaning plate and the bearing, so that one side of the cleaning plate is in contact with the surface of a protective lens, and the rotating shaft rotates in the bearing to drive the cleaning plate to rotate; and the cleaning plate rotates to do circumferential motion so as to remove impurities adsorbed on the surface of the protective lens, so that the purpose of quickly cleaning adsorbates is achieved, the cleaning efficiency is improved, and the influence of excessive impurities on observation of a detection result of the pressure gauge body is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure gauges, in particular to a pressure gauge for air pressure detection. Background Art

[0002] The pressure gauge used for air pressure detection is an instrument specially used to measure the gas pressure. It is usually called an air pressure gauge. It consists of a shell and a pressure measuring element. The shell is engraved with scale lines, a pointer and a dial to indicate the measured gas pressure value. It measures pressure based on the relationship between the change in gas pressure and height. It can provide accurate pressure values. It is very important for industrial production and scientific experiments that require precise control of air pressure. It has a simple structure and is easy to use, making it an indispensable tool in industrial production.

[0003] After long-term use, the surface of the air pressure detection pressure gauge will often absorb a large amount of impurities, which affect the clarity and readability of the data. The air pressure detection pressure gauge itself does not have a cleaning function. When the staff need to remove these impurities, they have to use external tools to clean them, which undoubtedly increases their labor intensity.

[0004] Patent document CN208125323U discloses an explosion-proof pressure gauge, "including a pressure gauge, a tempered glass is arranged on the top of the pressure gauge, a front fixed shell is arranged on the top of the tempered glass, the front fixed shell is threadedly connected to the rear fixed shell through a threaded rod, an air pipe is arranged below the pressure gauge, a compression frame is fixedly connected to the right end of the air pipe, and a pressure plate is slidably connected inside the compression frame. The utility model relates to the technical field of test instruments. This explosion-proof pressure gauge achieves the goal of setting a protective cover on the outside of the pressure gauge, The purpose of preventing it from exploding due to excessive pressure, and the explosion of the front cover made of transparent plastic or glass to injure the operator, has achieved a certain limit on the air pressure. If the air pressure is too high, the push device will self-lock to block the air pressure gauge from contacting the air pressure, avoiding excessive air pressure and causing the pressure gauge to explode, thereby improving the safety of the air pressure gauge. However, the explosion-proof air pressure gauge in the above-mentioned public documents mainly considers avoiding excessive air pressure and causing the pressure gauge to explode, but does not consider the problem of facilitating the removal of impurities. Therefore, it is necessary to develop a pressure gauge for air pressure detection. Utility Model Content

[0005] The utility model aims to provide a pressure gauge for air pressure detection, so as to solve the technical problem that it is inconvenient to remove adsorbed impurities proposed in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a pressure gauge for air pressure detection, comprising a pressure gauge body and a pointer arranged inside the pressure gauge body, the bottom of the pressure gauge body is connected to a support tube, and the bottom end of the support tube is installed with a threaded head;

[0007] A protective lens is fixedly installed inside the pressure gauge body, and the protective lens is located on one side of the pointer. A support frame is fixedly installed on the pressure gauge body, a cylinder is movably installed on the support frame, a disc is fixedly installed on the cylinder, a bearing is fixedly installed on the disc, a rotating shaft is fixedly installed inside the bearing, and a cleaning plate is fixedly installed on the rotating shaft.

[0008] Preferably, a magnetic ring is fixedly mounted on the disc, and an iron ring corresponding to the magnetic ring is fixedly mounted on the pressure gauge body.

[0009] Preferably, a knob is fixedly mounted on the rotating shaft.

[0010] Preferably, a pressure relief pipe is fixedly mounted on the support pipe, and a sealing block is passed through the interior of the pressure relief pipe.

[0011] Preferably, a vent pipe is provided inside the sealing block, an exhaust head is installed inside the sealing block, and the exhaust head is connected to the vent pipe.

[0012] Preferably, two groups of guide rods are fixedly mounted on the sealing block, and limiting rings corresponding to the guide rods are fixedly mounted inside the pressure relief pipe, and the guide rods penetrate the inside of the limiting rings.

[0013] Preferably, a return spring is installed around the guide rod, and one end of the return spring is fixedly connected to one end of the guide rod.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model is convenient for removing impurities adsorbed on the dial of the pressure gauge for air pressure detection through the installed cleaning plate and bearing. When removing impurities, the position of the disc is adjusted through the cooperation of the support frame and the cylinder, which will drive the magnetic ring to contact with the iron ring, and then limit the position of the disc, so that one side of the cleaning plate will contact with the surface of the protective lens, so that the rotation of the rotating shaft inside the bearing will drive the cleaning plate to rotate, and the cleaning plate rotates in a circular motion to remove impurities adsorbed on the surface of the protective lens, thereby achieving the purpose of quickly cleaning the adsorbed objects, improving the cleaning efficiency, and avoiding excessive adsorbed impurities from affecting the viewing of the pressure gauge body detection results;

[0016] 2. The utility model installs a pressure relief pipe to facilitate the pressure relief processing of the pressure gauge for air pressure detection. When the pressure gauge for air pressure detection detects the pressure, after the pressure exceeds the preset critical value, it will push the sealing block to move. After the movement of the sealing block drives the exhaust head to move out of the pressure relief pipe, the air pressure will flow to the outside through the vent pipe and the exhaust head, thereby achieving the purpose of pressure relief and avoiding the danger of excessive pressure. When the pressure is lower than the preset value, the reset spring will push the guide rod to reset, and the reset of the guide rod will pull the sealing block to reset, thereby sealing the pressure relief pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the support tube structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the disc structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the pressure relief pipe structure of the utility model.

[0021] In the figure: 1. support tube; 2. threaded head; 3. pressure gauge body; 4. pointer; 5. protective lens; 6. support frame; 7. cylinder; 8. disk; 9. magnetic ring; 10. iron ring; 11. bearing; 12. rotating shaft; 13. cleaning plate; 14. knob; 15. pressure relief pipe; 16. sealing block; 17. ventilation pipe; 18. exhaust head; 19. limit ring; 20. guide rod; 21. reset spring. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1 , Figure 2 and Figure 3A pressure gauge for air pressure detection includes a pressure gauge body 3 and a pointer 4 arranged inside the pressure gauge body 3. The bottom of the pressure gauge body 3 is connected to a support tube 1, and a threaded head 2 is installed at the bottom end of the support tube 1. A protective lens 5 is fixedly installed inside the pressure gauge body 3, and the protective lens 5 is located on one side of the pointer 4. A support frame 6 is fixedly installed on the pressure gauge body 3, and a cylinder 7 is movably installed on the support frame 6. A disc 8 is fixedly installed on the cylinder 7, and a bearing 11 is fixedly installed on the disc 8. A rotating shaft 12 is fixedly installed inside the bearing 11, and a cleaning plate 13 is fixedly installed on the rotating shaft 12. When using the pressure gauge for air pressure detection, after the threaded connection with the detection object is made through the threaded head 2, it is connected to the pressure gauge body 3 through the support tube 1, and then the pressure inside the detection object enters the inside of the pressure gauge body 3 through the support tube 1, and then the pressure inside the detection object enters the inside of the pressure gauge body 3 through the support tube 1. The detection element inside the pressure gauge body 3 will make the pointer 4 move, and then the pressure can be detected. The protective lens 5 is used to protect the pointer 4 and the dial position inside the pressure gauge body 3. After long-term use, more impurities will be adsorbed on the protective lens 5. When the impurities are removed, the position of the disc 8 is adjusted through the cooperation of the support frame 6 and the cylinder 7, which will drive the magnetic ring 9 to contact the iron ring 10, and then limit the position of the disc 8, so that one side of the cleaning plate 13 will contact the surface of the protective lens 5, and the rotation of the rotating shaft 12 inside the bearing 11 will drive the cleaning plate 13 to rotate. The cleaning plate 13 rotates in a circular motion to remove the impurities adsorbed on the surface of the protective lens 5, thereby achieving the purpose of quickly cleaning the adsorbed objects, improving the cleaning efficiency, and avoiding excessive adsorption of impurities affecting the viewing of the detection results of the pressure gauge body 3.

[0024] See also Figure 1 A magnetic ring 9 is fixedly mounted on the disk 8, and an iron ring 10 corresponding to the magnetic ring 9 is fixedly mounted on the pressure gauge body 3. The magnetic force generated by the magnetic ring 9 can adsorb the iron ring 10, and then the cooperation between the two can limit the position of the disk 8.

[0025] See also Figure 2 A knob 14 is fixedly mounted on the rotating shaft 12 , and rotating the knob 14 will drive the rotating shaft 12 to rotate.

[0026] See also Figure 2 and Figure 4A pressure relief pipe 15 is fixedly installed on the support pipe 1, and a sealing block 16 is penetrated inside the pressure relief pipe 15. A vent pipe 17 is arranged inside the sealing block 16, and an exhaust head 18 is installed inside the sealing block 16, and the exhaust head 18 is communicated with the vent pipe 17. The support pipe 1 provides an installation space for the pressure relief pipe 15. When the pressure gauge for air pressure detection is used for pressure detection, after the pressure exceeds the preset critical value, the sealing block 16 will be pushed to move. After the movement of the sealing block 16 drives the exhaust head 18 to move out of the pressure relief pipe 15, the air pressure will flow to the outside through the vent pipe 17 and the exhaust head 18, thereby achieving the purpose of pressure relief and avoiding the danger of excessive pressure.

[0027] See also Figure 4 Two groups of guide rods 20 are fixedly installed on the sealing block 16, and a limiting ring 19 corresponding to the guide rod 20 is fixedly installed inside the pressure relief pipe 15, and the guide rod 20 runs through the inside of the limiting ring 19. A return spring 21 is installed around the guide rod 20, and one end of the return spring 21 is fixedly connected to one end of the guide rod 20. When the sealing block 16 moves, it will drive the guide rod 20 to slide inside the limiting ring 19, and then limit and guide the sealing block 16. When the pressure is lower than the preset value, the reset spring 21 will reset and push the guide rod 20 to reset. The reset of the guide rod 20 will pull the sealing block 16 to reset, and then seal the pressure relief pipe 15.

[0028] Working principle: first, when using the pressure gauge for air pressure detection, after threaded connection with the detection object through the threaded head 2, it is connected to the pressure gauge body 3 through the support tube 1, and then the pressure inside the detection object enters the inside of the pressure gauge body 3 through the support tube 1. The detection element inside the pressure gauge body 3 will make the pointer 4 move, and then the pressure can be detected. The protective lens 5 is used to protect the pointer 4 and the dial position inside the pressure gauge body 3. After long-term use, more impurities will be adsorbed on the protective lens 5. When the impurities are removed, the position of the disk 8 is adjusted through the cooperation of the support frame 6 and the cylinder 7, which will drive the magnetic ring 9 to contact with the iron ring 10, and then limit the position of the disk 8, so that one side of the cleaning plate 13 will contact with the surface of the protective lens 5, so that the rotating shaft 12 is in the bearing 11. The rotation of the cleaning plate 13 will drive the cleaning plate 13 to rotate. The circular motion of the cleaning plate 13 will remove the impurities adsorbed on the surface of the protective lens 5, thereby achieving the purpose of quickly cleaning the adsorbed material, improving the cleaning efficiency, and avoiding excessive adsorbed impurities affecting the viewing of the detection results of the pressure gauge body 3. When the pressure gauge for air pressure detection is used for pressure detection, after the pressure exceeds the preset critical value, the sealing block 16 will be pushed to move. After the sealing block 16 moves and drives the exhaust head 18 to move out of the pressure relief pipe 15, the air pressure will flow to the outside through the vent pipe 17 and the exhaust head 18, thereby achieving the purpose of pressure relief and avoiding danger caused by excessive pressure. When the pressure is lower than the preset value, the reset spring 21 will reset and push the guide rod 20 to reset. The reset of the guide rod 20 will pull the sealing block 16 to reset, thereby sealing the pressure relief pipe 15.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A pressure gauge for air pressure detection, comprising a pressure gauge body (3) and a pointer (4) arranged inside the pressure gauge body (3), characterized in that: The bottom of the pressure gauge body (3) is connected to a support tube (1), and a threaded head (2) is installed at the bottom end of the support tube (1); A protective lens (5) is fixedly mounted inside the pressure gauge body (3), and the protective lens (5) is located on one side of the pointer (4); a support frame (6) is fixedly mounted on the pressure gauge body (3); a cylinder (7) is movably mounted on the support frame (6); a disc (8) is fixedly mounted on the cylinder (7); a bearing (11) is fixedly mounted on the disc (8); a rotating shaft (12) is fixedly mounted inside the bearing (11); and a cleaning plate (13) is fixedly mounted on the rotating shaft (12).

2. A pressure gauge for air pressure detection according to claim 1, characterized in that: A magnetic ring (9) is fixedly mounted on the disc (8), and an iron ring (10) corresponding to the magnetic ring (9) is fixedly mounted on the pressure gauge body (3).

3. A pressure gauge for air pressure detection according to claim 2, characterized in that: A knob (14) is fixedly mounted on the rotating shaft (12).

4. A pressure gauge for air pressure detection according to claim 3, characterized in that: A pressure relief pipe (15) is fixedly mounted on the support pipe (1), and a sealing block (16) is inserted into the interior of the pressure relief pipe (15).

5. A pressure gauge for air pressure detection according to claim 4, characterized in that: A vent pipe (17) is arranged inside the sealing block (16), an exhaust head (18) is installed inside the sealing block (16), and the exhaust head (18) is connected to the vent pipe (17).

6. A pressure gauge for air pressure detection according to claim 5, characterized in that: Two groups of guide rods (20) are fixedly mounted on the sealing block (16), and a limiting ring (19) corresponding to the guide rods (20) is fixedly mounted inside the pressure relief pipe (15), and the guide rods (20) penetrate the inside of the limiting ring (19).

7. A pressure gauge for air pressure detection according to claim 6, characterized in that: A return spring (21) is mounted around the guide rod (20), and one end of the return spring (21) is fixedly connected to one end of the guide rod (20).

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