Clean room anemometer calibration device
By using an annular rubber ring and a magnet clamping structure in the clean room anemometer calibration device, the air leakage problem during the calibration of probes of different specifications is solved, and high-precision and efficient anemometer calibration is achieved.
Patent Information
- Application Number
- CN202422625543.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-10-30
AI Technical Summary
Existing anemometer calibration devices are prone to air leakage when adapting to probes of different specifications, affecting the calibration accuracy.
A clean room anemometer calibration device was designed. It adopted an annular rubber ring and a magnet clamping structure. The deformation of the annular rubber ring allowed it to tightly fit probes of different sizes to prevent air leakage, and the magnet structure simplified the installation and removal process of the probe.
The accuracy and efficiency of anemometer calibration are improved, the replacement process of the annular rubber ring is simplified, and the stable clamping and calibration accuracy of probes of different specifications are ensured.
Smart Images
Figure CN223320425U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wind speed, in particular to a clean room anemometer calibration device. Background Art
[0002] Anemometer is an instrument for measuring air velocity. It is widely used in all walks of life. Anemometer mainly consists of anemometer body and probe. In order to ensure the accuracy of wind speed data detected by the anemometer, the anemometer needs to be calibrated regularly using an anemometer calibration device. By using a blower device to blow wind of a determined wind speed into the air inlet of the wind tunnel in the anemometer calibration device, and making the anemometer probe measure the wind speed in the wind tunnel, the measured value is compared with the actual adjusted wind speed to calibrate the display number of the anemometer.
[0003] However, due to the different specifications of anemometers, in order to adapt to the probes on anemometers of different specifications, people generally set the openings in the wind tunnel to be relatively large, which poses a risk of air leakage during use and affects the calibration accuracy. Utility Model Content
[0004] The purpose of the present utility model is to provide a clean room anemometer calibration device to solve at least any one of the problems raised in the above background technology.
[0005] To achieve the above-mentioned object, the utility model provides the following technical solution: A clean room anemometer calibration device comprises a wind tunnel fixedly mounted on a frame, a fixed tube fixedly mounted on the wind tunnel, a mounting tube provided at one end of the fixed tube, a probe body provided on one side of the mounting tube, an annular rubber ring fixedly mounted in the mounting tube, and the inner diameter of one end of the annular rubber ring is in an outwardly expanded state, two first fixing plates fixedly mounted on the fixed tube, two second mounting plates fixedly mounted on the mounting tube, rotating screws respectively rotatably mounted on the two second mounting plates, and the two rotating screws respectively pass through the two first fixing plates and are respectively threadedly connected to the two first fixing plates, two sliding rods slidably mounted on the fixed tube, arc-shaped clamping plates respectively fixedly mounted on the ends of the two sliding rods that are close to each other, and pulling plates respectively fixedly mounted on the ends of the two sliding rods that are away from each other, compression springs respectively movably sleeved on the two sliding rods, and one end of the two compression springs is respectively fixedly connected to the corresponding arc-shaped clamping plates, and the other ends of the two compression springs are both fixedly connected to the fixed tube.
[0006] Preferably, both of the compression springs are tinned springs.
[0007] Preferably, an annular groove is formed at one end of the fixing tube close to the mounting tube, an annular rubber sealing ring is fixedly mounted at one end of the mounting tube close to the fixing tube, and one end of the annular rubber sealing ring extends into the annular groove.
[0008] Preferably, two guide rods are fixedly mounted on the two arc-shaped clamping plates respectively, and the four guide rods are all slidably connected to the fixed tube.
[0009] Preferably, a rotating handle is fixedly mounted on one end of each of the two rotating screws.
[0010] Preferably, two connecting rods are fixedly mounted on the two arc-shaped clamping plates respectively, one end of the four connecting rods is fixedly mounted with a movable magnet plate respectively, and four fixed magnets are fixedly mounted on the inner wall of the fixed tube.
[0011] Preferably, four through holes are provided on the fixing tube, and linear bearings are fixedly installed in the four through holes respectively, and the four guide rods respectively pass through the four linear bearings and are slidably connected to the inner walls of the four linear bearings respectively.
[0012] The beneficial effects of the utility model are as follows:
[0013] In the present invention, the guide rod is first moved to drive the movable magnet plate into contact with the fixed magnet plate. At this time, the movable magnet plate is firmly adsorbed on the fixed magnet plate by magnetic force, so that the arc clamping plate is stably maintained in the current state. Then the staff passes the probe body through the annular rubber ring, the mounting tube and the fixed tube into the wind tunnel, and then moves the guide rod to separate the movable magnet plate from the fixed magnet plate. At this time, the compression spring will restore its original shape to drive the two arc clamping plates to approach each other to fix the probe body and clamp it on the device. The wind tunnel is started for calibration. Since the annular rubber ring is made of rubber material and one end of the annular rubber ring is funnel-shaped, when probe bodies of different sizes are inserted into the annular rubber ring, the annular rubber ring will produce corresponding deformation and eventually tightly contact with probe bodies of various sizes. Then, the mounting tube can be blocked with probe bodies of different sizes to prevent air leakage, thereby improving calibration accuracy. By rotating the handle to drive the rotating screw to rotate, the mounting tube and the annular rubber ring are removed from the device, and the replacement of the annular rubber ring is completed. The process is simple, fast and efficient. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 A schematic structural diagram of a preferred embodiment of the clean room anemometer calibration device provided by the utility model;
[0015] Figure 2 for Figure 1 An enlarged schematic diagram of part A is shown;
[0016] Figure 3 for Figure 1 The structural diagram of the annular rubber ring shown;
[0017] Figure 4 This is a three-dimensional diagram of the clean room anemometer calibration device provided by the utility model.
[0018] In the figure: 1. Frame; 2. Wind tunnel; 3. Fixed tube; 4. Probe body; 5. Mounting tube; 6. Annular rubber ring; 7. First fixing plate; 8. Second mounting plate; 9. Rotating screw; 10. Rotating handle; 11. Arc clamping plate; 12. Connecting rod; 13. Moving magnet plate; 14. Sliding rod; 15. Pulling plate; 16. Fixed magnet; 17. Guide rod; 18. Compression spring. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0020] The utility model provides Figure 1-4The clean room anemometer calibration device shown in the figure includes a wind tunnel 2 fixedly mounted on a frame 1, a fixed tube 3 fixedly mounted on the wind tunnel 2, and a mounting tube 5 provided at one end of the fixed tube 3. In order to make the connection between the mounting tube 5 and the fixed tube 3 tighter, an annular groove is provided at one end of the fixed tube 3 close to the mounting tube 5, an annular rubber sealing ring is fixedly mounted at one end of the mounting tube 5 close to the fixed tube 3, and one end of the annular rubber sealing ring extends into the annular groove, a probe body 4 is provided next to the mounting tube 5, and an annular rubber ring 6 is fixedly mounted in the mounting tube 5. Since the annular rubber ring 6 is It is made of rubber material, and one end of the annular rubber ring 6 is funnel-shaped. Therefore, when probe bodies 4 of different sizes are inserted into the annular rubber ring 6, the annular rubber ring 6 will produce corresponding deformation, and finally all of them are in close contact with probe bodies 4 of various sizes, and then the mounting tube 5 can be blocked with probe bodies 4 of different sizes to prevent air leakage, thereby improving the calibration accuracy. The inner diameter of one end of the annular rubber ring 6 is in an outwardly expanded state. Two first fixing plates 7 are fixedly installed on the fixing tube 3, and two second mounting plates 8 are fixedly installed on the mounting tube 5. The two second mounting plates 8 are fixedly installed on the fixing tube 3. The mounting plate 8 is respectively rotatably mounted with a rotating screw 9. In order to make it more convenient for people to rotate the rotating screw 9, one end of the two rotating screws 9 is respectively fixedly mounted with a rotating handle 10, and the two rotating screws 9 respectively penetrate the two first fixing plates 7 and are respectively threadedly connected to the two first fixing plates 7. Two sliding rods 14 are slidably mounted on the fixed tube 3. The ends of the two sliding rods 14 close to each other are respectively fixedly mounted with an arc-shaped splint 11, and the ends of the two sliding rods 14 away from each other are respectively fixedly mounted with a pulling plate 15. Compression springs 18 are respectively movably sleeved on the two sliding rods 14. In order to To improve the service life of the compression spring 18, the two compression springs 18 are tin-plated springs, and one end of the two compression springs 18 is fixedly connected to the corresponding arc-shaped clamping plates 11, and the other ends of the two compression springs 18 are fixedly connected to the fixed tube 3. In order to enable people to use the arc-shaped clamping plates 11 to stably maintain at a position away from each other to make way for the probe body 4, two connecting rods 12 are fixedly installed on the two arc-shaped clamping plates 11, and one end of the four connecting rods 12 is fixedly installed with a moving magnet plate 13, and four fixed magnets 16 are fixedly installed on the inner wall of the fixed tube 3.
[0021] In order to make it more convenient for people to use the two arc-shaped clamping plates 11, and thus facilitate the insertion of the probe body 4 into the wind tunnel 2, two guide rods 17 are fixedly installed on the two arc-shaped clamping plates 11, and the four guide rods 17 are all slidably connected to the fixed tube 3. In order to reduce the friction between the guide rod 17 and the fixed tube 3, and thus reduce the wear of the guide rod 17 and increase the service life of the guide rod 17, four through holes are opened on the fixed tube 3, and linear bearings are fixedly installed in the four through holes. The four guide rods 17 respectively penetrate the four linear bearings and are slidably connected to the inner walls of the four linear bearings.
[0022] The working principle of the clean room anemometer calibration device provided by the present invention is as follows: in the initial state, the compression spring 18 is in a free state, and the fixed magnet plate 16 and the movable magnet plate 13 are far apart due to the large distance between them. Therefore, the magnetic force between the fixed magnet plate 16 and the movable magnet plate 13 can be ignored. When the device needs to be used, the guide rods 17 are first moved away from each other to drive the two arc clamping plates 11 away from each other. The arc clamping plates 11 move away from each other to drive the movable magnet plate 13 to contact the fixed magnet plate 16. At this time, the movable magnet plate 13 is firmly adsorbed on the fixed magnet plate 16 by the magnetic force, thereby keeping the arc clamping plate 11 stable in the current state. Then the staff passes the probe body 4 through the annular rubber ring 6, the mounting tube 5 and the fixed tube 3 into the wind tunnel 2, and then moves the guide rods 17 closer to each other to separate the movable magnet plate 13 from the fixed magnet plate 16. At this time, the magnetic force between the movable magnet plate 13 and the fixed magnet plate 16 is less than the elastic force of the compression spring 18, so the compression spring 1 8 To restore the original shape, the two arc-shaped clamping plates 11 are moved closer to each other to fix and clamp the probe body 4, and then the probe body 4 is fixedly installed on the device, and the wind tunnel 2 is started for calibration. Since the annular rubber ring 6 is made of rubber material and one end of the annular rubber ring 6 is funnel-shaped, when probe bodies 4 of different sizes are inserted into the annular rubber ring 6, the annular rubber ring 6 will produce corresponding deformation, and finally they are tightly in contact with probe bodies 4 of various sizes, and then the mounting tube 5 can be blocked with probe bodies 4 of different sizes to prevent air leakage, thereby improving the calibration accuracy. When the annular rubber ring 6 is damaged after being used for a long time and needs to be replaced, the rotating handle 10 is turned counterclockwise. The rotation of the rotating handle 10 drives the rotating screw 9 to rotate and move outward, and finally the rotating screw 9 is separated from the first fixing plate 7 to remove the mounting tube 5 and the annular rubber ring 6 from the device, thereby completing the replacement of the annular rubber ring 6. The process is simple, fast and efficient.
[0023] Compared with related technologies, the clean room anemometer calibration device provided by the present invention has the following beneficial effects:
[0024] The utility model provides a clean room anemometer calibration device. First, the guide rod 17 is moved to drive the movable magnet plate 13 to contact the fixed magnet plate 16. At this time, the movable magnet plate 13 is firmly adsorbed on the fixed magnet plate 16 by the magnetic force, so that the arc clamping plate 11 is stably maintained in the current state. Then the staff passes the probe body 4 through the annular rubber ring 6, the installation tube 5 and the fixed tube 3 into the wind tunnel 2, and then moves the guide rod 17 to separate the movable magnet plate 13 from the fixed magnet plate 16. At this time, the compression spring 18 is restored to its original shape to drive the two arc clamping plates 11 to approach each other to fix the probe body 4 and clamp it on the device, and start the wind. The hole 2 is calibrated. Since the annular rubber ring 6 is made of rubber material and one end of the annular rubber ring 6 is funnel-shaped, when probe bodies 4 of different sizes are inserted into the annular rubber ring 6, the annular rubber ring 6 will produce corresponding deformation, and finally all of them are in close contact with probe bodies 4 of various sizes, and then the mounting tube 5 can be blocked with probe bodies 4 of different sizes to prevent air leakage, thereby improving the calibration accuracy. By rotating the handle 10 to drive the rotating screw 9 to rotate, the mounting tube 5 and the annular rubber ring 6 are removed from the device, and then the replacement of the annular rubber ring 6 is completed. The process is simple, fast and efficient.
[0025] 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 replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A clean room anemometer calibration device, comprising a wind tunnel fixedly mounted on a frame, characterized in that: The cam is fixedly mounted on the wind tunnel, and one end of the fixed tube is provided with a mounting tube, and a probe body is provided next to the mounting tube, an annular rubber ring is fixedly mounted in the mounting tube, and the inner diameter of one end of the annular rubber ring is in an outwardly expanded state. The fixed tube is fixedly mounted with two first fixing plates, and the mounting tube is fixedly mounted with two second mounting plates, and the two second mounting plates are respectively rotatably mounted with rotating screws, and the two rotating screws respectively penetrate the two first fixing plates and are respectively threadedly connected to the two first fixing plates. Two sliding rods are slidably mounted on the fixed tube, and the ends of the two sliding rods close to each other are respectively fixedly mounted with arc splints, and the ends of the two sliding rods away from each other are respectively fixedly mounted with pulling plates, and the two sliding rods are movably sleeved with compression springs, and one end of the two compression springs is respectively fixedly connected to the corresponding arc splints, and the other ends of the two compression springs are fixedly connected to the fixed tube.
2. A clean room anemometer calibration device according to claim 1, characterized in that: The two compression springs are both tinned springs.
3. The clean room anemometer calibration device according to claim 2, characterized in that: An annular groove is formed on one end of the fixing tube close to the mounting tube, an annular rubber sealing ring is fixedly mounted on one end of the mounting tube close to the fixing tube, and one end of the annular rubber sealing ring extends into the annular groove.
4. A clean room anemometer calibration device according to claim 3, characterized in that: Two guide rods are fixedly mounted on the two arc-shaped clamping plates respectively, and the four guide rods are all slidably connected to the fixed tube.
5. The clean room anemometer calibration device according to claim 4, characterized in that: One end of the two rotating screws is respectively fixedly mounted with a rotating handle.
6. The clean room anemometer calibration device according to claim 5, characterized in that: Two connecting rods are fixedly installed on the two arc-shaped clamping plates respectively, one end of the four connecting rods is fixedly installed with a moving magnet plate respectively, and four fixed magnets are fixedly installed on the inner wall of the fixed tube.
7. The clean room anemometer calibration device according to claim 6, characterized in that: Four through holes are provided on the fixing tube, and linear bearings are fixedly installed in the four through holes respectively. The four guide rods respectively penetrate the four linear bearings and are slidably connected to the inner walls of the four linear bearings respectively.