Air pressure sensor

Abstract

The utility model relates to the technical field of pressure sensors, and discloses an air pressure sensor which comprises a connecting pipe, a threaded hole and a mounting hole are arranged on the circumferential surface of the connecting pipe, a mounting cylinder is fixedly connected in the mounting hole, a sensor body is arranged in the mounting cylinder, and a positioning ring is fixedly connected on the circumferential surface of the sensor body. A groove is formed in the upper end face of the positioning ring, a threaded rod is fixedly connected to the upper end of the mounting cylinder, a pressing block is slidably connected to the circumferential face of the threaded rod, rotating blocks are connected to the circumferential face of the threaded rod in a threaded mode, and the pressing block is slidably connected with the rotating blocks. The pressing block drives the positioning ring to move downwards, the positioning ring drives the sensor body to move downwards for installation and fixation, and during subsequent maintenance and disassembly, the sensor body can be easily taken out only by reversely rotating the rotating block, so that the effect of facilitating maintenance and disassembly is achieved.

Description

Technical Field

[0001] This utility model relates to the field of pressure sensor technology, and more specifically to an air pressure sensor. Background Technology

[0002] A gas pressure sensor is an instrument used to measure the absolute pressure of a gas. It is primarily suitable for physical experiments related to gas pressure, such as gas laws, and can also be used in biological and chemical experiments to measure the pressure of dry, non-corrosive gases. A drawback of existing technology is that when detecting gas pressure in a pipeline, the air pressure sensor is typically installed on a connecting pipe, which is then installed on the pipeline to be tested. However, current air pressure sensors are threaded onto the connecting pipe, making subsequent disassembly and repair inconvenient. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides an air pressure sensor to solve the problems existing in the background art.

[0004] This utility model provides the following technical solution: an air pressure sensor, including a connecting pipe, a threaded hole and a mounting hole are formed on the circumferential surface of the connecting pipe, a mounting cylinder is fixedly connected in the mounting hole, a sensor body is disposed in the mounting cylinder, a positioning ring is fixedly connected to the circumferential surface of the sensor body, a groove is formed on the upper end surface of the positioning ring, a threaded rod is fixedly connected to the upper end of the mounting cylinder, a pressure block is slidably connected to the circumferential surface of the threaded rod, a rotating block is threadedly connected to the circumferential surface of the threaded rod, the pressure block and the rotating block are slidably connected, and the pressure block is located in the groove.

[0005] Preferably, the mounting cylinder and the connecting pipe are fixedly connected by bolts, and a sealing gasket is fixedly connected between the mounting cylinder and the connecting pipe.

[0006] Preferably, a first sealing ring is fixedly connected to the upper end of the mounting cylinder, and the upper end face of the first sealing ring is in contact with the lower end face of the positioning tube.

[0007] Preferably, a guide groove is provided on the lower end face of the mounting cylinder, a guide rod is slidably connected in the guide groove, a blocking plate is fixedly connected to the lower end of the guide rod, a tension spring is fixedly connected between the blocking plate and the mounting cylinder, and the blocking plate and the mounting cylinder are slidably connected.

[0008] Preferably, a second sealing ring is fixedly connected to the upper end of the plug plate, and the second sealing ring is in contact with the lower end face of the mounting cylinder.

[0009] Preferably, a support rod is fixedly connected to the lower end of the sensor, and the support rod is in contact with the upper surface of the blocking plate.

[0010] The technical effects and advantages of this utility model are as follows:

[0011] 1. This utility model inserts the sensor body into the connecting cylinder, then rotates the pressure block to lock it into the groove on the upper surface of the positioning ring. Simultaneously rotating two rotating blocks causes the pressure block to move downwards, which in turn moves the positioning ring downwards, causing the sensor body to move downwards until it reaches the lower limit position of the mounting cylinder. At the same time, a support rod fixedly connected to the lower end of the sensor body pushes the blocking plate downwards, opening the lower end of the mounting cylinder. This allows the sensor body to sense the air pressure inside the connecting pipe and simultaneously fixes the sensor body in place. For subsequent maintenance and disassembly, simply rotating the rotating block in the opposite direction allows the sensor body to be easily removed, thus achieving convenient maintenance and disassembly.

[0012] 2. In this utility model, the tension spring, guide groove, and guide rod work together to pull the blocking plate upwards when the sensor body is removed from the mounting cylinder, thus sealing the lower end of the blocking plate and preventing gas leakage in the connecting pipe. This ensures that the gas in the connecting pipe can be transported normally when the sensor body is disassembled and repaired. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0015] Figure 3 This is a schematic diagram of the disassembled sensor body in this utility model.

[0016] Figure 4 This is a schematic diagram of the structure of the pressure block in this utility model.

[0017] The attached figures are labeled as follows: 1. Connecting pipe; 2. Threaded hole; 3. Mounting hole; 4. Mounting cylinder; 5. Sensor body; 6. Positioning ring; 7. Groove; 8. Threaded rod; 9. Pressure block; 10. Rotating block; 11. Sealing gasket; 12. First sealing ring; 13. Guide groove; 14. Guide rod; 15. Blocking plate; 16. Second sealing ring; 17. Supporting rod; 18. Tension spring. Detailed Implementation

[0018] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The air pressure sensor involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] This utility model provides an air pressure sensor, including a connecting pipe 1. The connecting pipe 1 has a threaded hole 2 and a mounting hole 3 on its circumferential surface. A mounting cylinder 4 is fixedly connected inside the mounting hole 3. A sensor body 5 is disposed inside the mounting cylinder 4. A positioning ring 6 is fixedly connected to the circumferential surface of the sensor body 5. A groove 7 is formed on the upper end face of the positioning ring 6. A threaded rod 8 is fixedly connected to the upper end of the mounting cylinder 4. A pressure block 9 is slidably connected to the circumferential surface of the threaded rod 8. A rotating block 10 is threadedly connected to the circumferential surface of the threaded rod 8. The pressure block 9 and the rotating block 10 are slidably connected. The pressure block 9 is located within the groove 7. During operation, by fixing the connecting cylinder inside the connecting pipe 1, the connecting pipe 1 can be connected to the delivery pipe. Then, the sensor body 5 is inserted into the connecting cylinder, and the pressure block 9 is rotated. The pressure block 9 is secured in the groove 7 on the upper surface of the positioning ring 6. Then, by simultaneously rotating the two rotating blocks 10, the rotating blocks 10 will drive the pressure block 9 to move downwards, which in turn will drive the positioning ring 6 to move downwards. The positioning ring 6 will then drive the sensor body 5 to move downwards, allowing the sensor body 5 to be inserted to the lower limit position of the mounting cylinder 4. This will push the blocking plate 15 to open, allowing the sensor body 5 to sense the air pressure in the connecting pipe 1 and simultaneously fix the sensor body 5 in place. When the sensor body 5 needs to be disassembled for maintenance and repair in the future, simply rotate the rotating blocks 10 in the opposite direction to move the pressure block 9 upwards, and then rotate the pressure block 9 to disengage from the positioning ring 6. At this point, the sensor body 5 can be easily removed, thus achieving the effect of convenient maintenance and disassembly.

[0020] Furthermore, the mounting cylinder 4 and the connecting pipe 1 are fixedly connected by bolts, and a sealing gasket 11 is fixedly connected between the mounting cylinder 4 and the connecting pipe 1. During operation, the sealing gasket 11 fills the gap between the mounting cylinder 4 and the connecting pipe 1, preventing gas in the connecting pipe 1 from leaking out from here.

[0021] Furthermore, a first sealing ring 12 is fixedly connected to the upper end of the mounting cylinder 4. The upper end face of the first sealing ring 12 is in contact with the lower end face of the positioning tube. During operation, the sealing performance of the sensor body 5 is improved after installation through the action of the first sealing ring 12.

[0022] Furthermore, a guide groove 13 is provided on the lower end face of the mounting cylinder 4. A guide rod 14 is slidably connected in the guide groove 13. A blocking plate 15 is fixedly connected to the lower end of the guide rod 14. A tension spring 18 is fixedly connected between the blocking plate 15 and the mounting cylinder 4. The blocking plate 15 is slidably connected to the mounting cylinder 4. During operation, as the sensor body 5 is removed from the mounting cylinder 4, the tension spring 18 pulls the blocking plate 15 upward through the circumference of the tension spring 18, the guide groove 13, and the guide rod 14. This causes the blocking plate 15 to be blocked at its lower end, preventing gas leakage in the connecting pipe 1. This ensures that the gas in the connecting pipe 1 can be normally transported during the disassembly and maintenance of the sensor body 5.

[0023] Furthermore, a second sealing ring 16 is fixedly connected to the upper end of the blocking plate 15. The second sealing ring 16 is in contact with the lower end face of the mounting cylinder 4. During operation, the sealing performance can be improved when the blocking plate 15 blocks the lower end of the mounting cylinder 4 through the action of the second sealing ring 16.

[0024] Furthermore, a support rod 17 is fixedly connected to the lower end of the sensor. The support rod 17 is in contact with the upper end face of the blocking plate 15. During operation, after the sensor is installed and fixed in the mounting cylinder 4, the support rod 17 will push the blocking plate 15 downward to open the lower end of the mounting cylinder 4, so that the sensor body 5 can sense the air pressure in the connecting pipe 1.

[0025] The working principle of this utility model is as follows: A connecting cylinder is fixed inside the connecting pipe 1 with bolts. After fixing, the gap between the mounting cylinder 4 and the connecting pipe 1 is filled by the sealing gasket 11, preventing gas leakage from the connecting pipe 1. Then, the connecting pipe 1 can be connected to the conveying pipe. Next, the sensor body 5 is inserted into the connecting cylinder, and the pressure block 9 is rotated to engage with the groove 7 on the upper surface of the positioning ring 6. Simultaneously rotating the two rotating blocks 10 causes the pressure block 9 to move downwards, which in turn moves the positioning ring 6 downwards, causing the sensor body 5 to move downwards until it is inserted to the lower limit position of the mounting cylinder 4. Simultaneously, the abutment rod 17, fixedly connected to the lower end of the sensor body 5, pushes the blocking plate 15 downwards, opening the lower end of the mounting cylinder 4, allowing the sensor body 5 to... The air pressure inside the connecting pipe 1 is sensed, and the sensor body 5 is fixed in place. When the sensor body 5 needs to be disassembled for maintenance and repair, simply rotate the rotating block 10 in the opposite direction. Under the action of the tension spring 18 and the blocking plate 15, the sensor body 5 will be pushed upward with the height position of the rotating block 10. After the rotating block 10 moves to the upper limit position, the sensor body 5 can be pressed down. Then, the pressure block 9 is rotated to disengage the pressure block 9 from the positioning ring 6. At this time, the sensor body 5 can be easily removed, thus achieving the effect of convenient maintenance and disassembly. At the same time, through the circumference of the tension spring 18, guide groove 13 and guide rod 14, when the sensor body 5 is removed from the mounting cylinder 4, the tension spring 18 will pull the blocking plate 15 upward to seal the lower end of the blocking plate 15, preventing gas leakage in the connecting pipe 1. This ensures that the gas in the connecting pipe 1 can be normally transported during the disassembly and repair of the sensor body 5.

[0026] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0027] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0028] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An air pressure sensor, comprising a connecting tube (1), characterized in that: The connecting pipe (1) has a threaded hole (2) and a mounting hole (3) on its circumferential surface. A mounting cylinder (4) is fixedly connected in the mounting hole (3). A sensor body (5) is provided in the mounting cylinder (4). A positioning ring (6) is fixedly connected to the circumferential surface of the sensor body (5). A groove (7) is provided on the upper end surface of the positioning ring (6). A threaded rod (8) is fixedly connected to the upper end of the mounting cylinder (4). A pressure block (9) is slidably connected to the circumferential surface of the threaded rod (8). A rotating block (10) is threadedly connected to the circumferential surface of the threaded rod (8). The pressure block (9) and the rotating block (10) are slidably connected. The pressure block (9) is located in the groove (7).

2. An air pressure sensor according to claim 1, characterized in that: The mounting cylinder (4) and the connecting pipe (1) are fixedly connected by bolts, and a sealing gasket (11) is fixedly connected between the mounting cylinder (4) and the connecting pipe (1).

3. An air pressure sensor according to claim 1, characterized in that: The upper end of the mounting cylinder (4) is fixedly connected to a first sealing ring (12), and the upper end face of the first sealing ring (12) is in contact with the lower end face of the positioning tube.

4. An air pressure sensor according to claim 1, characterized in that: The lower end face of the mounting cylinder (4) is provided with a guide groove (13), and a guide rod (14) is slidably connected in the guide groove (13). A blocking plate (15) is fixedly connected to the lower end of the guide rod (14). A tension spring (18) is fixedly connected between the blocking plate (15) and the mounting cylinder (4). The blocking plate (15) and the mounting cylinder (4) are slidably connected.

5. An air pressure sensor according to claim 4, characterized in that: The upper end of the blocking plate (15) is fixedly connected to a second sealing ring (16), and the second sealing ring (16) is in contact with the lower end face of the mounting cylinder (4).

6. An air pressure sensor according to claim 4, characterized in that: A support rod (17) is fixedly connected to the lower end of the sensor, and the support rod (17) is in contact with the upper surface of the blocking plate (15).

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