Air volume cover testing device

Abstract

The utility model relates to the technical field of air volume covers, and discloses an air volume cover testing device which comprises a bottom plate, outer pipes are fixedly connected to the left side and the right side of the top end of the bottom plate, adjusting rods are slidably connected to the inner sides of the outer pipes, a plurality of tooth grooves are formed in the rear sides of the adjusting rods, and a motor is fixedly installed in the middle of the bottom end of the bottom plate. A rotating rod is fixedly connected to the output end of the motor, a first bevel gear is fixedly connected to the outer side of one end of the rotating rod, a connecting sleeve is rotatably connected to one end of the rotating rod, a mounting rod is rotatably connected to the inner side of the connecting sleeve, and a second bevel gear is fixedly connected to the middle of the mounting rod. According to the utility model, the height of the air volume cover can be conveniently and flexibly adjusted so as to adapt to the height of an air port needing to be tested, so that manual lifting is not needed, time and labor are saved, waste of human resources is reduced, the phenomenon that arms of a worker ache is reduced, the phenomenon of air leakage caused by deviation of the cover body is reduced, and the testing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air volume hoods, in particular to an air volume hood testing device. Background Art

[0002] The air volume hood is a device specially used to measure air volume. Its advantages are that it can directly read the air volume, the measurement is fast, the operation is convenient, and the accuracy is high. The air volume is collected through the hood and the wind is gathered to the flute or wind speed uniformizer on the base. Then it is connected to the data processing and display device through a rubber tube, and the pressure difference signal is transmitted to the device. The built-in algorithm calculates and displays the air volume. In the air-conditioning system, it can be used to adjust the air volume of the fresh air and return air inlet and outlet to ensure the normal operation of the system; in the factory, it can be used to measure the air flow of the air supply duct and the exhaust duct to help the production line to make precise adjustments; in the laboratory, it can measure the air flow in different areas, determine the diffusion of pollutants, and ensure environmental quality.

[0003] After searching, a Chinese patent with publication number CN212378826U discloses an air volume hood. When the air volume hood is in use, it can only be visually observed from the outside. It is not clear whether the air volume hood has completely covered the air outlet, whether the air outlet is located in the middle of the air volume hood, or whether there is air leakage. The air volume hood requires at least two people when in use, that is, one person operates and adjusts it, and the other person observes it from the outside. This makes the operation cumbersome and time-consuming. Therefore, the air inlet cover of the hood is set outside the measured air outlet, and the camera shoots the relative position between the air inlet and the measured air outlet. In this way, a single operator can observe the position inside the hood through the display screen and make adjustments immediately, which is very intuitive, convenient and efficient.

[0004] There are still some shortcomings in the use of the above-mentioned air volume hood. When the air volume hood is in use, one or more workers are usually required to lift the hood body so as to align the hood body with the air vent for measurement, which wastes human resources. Long-term lifting can easily cause sore arms of the workers, reducing work efficiency, which can easily cause the hood body to tilt during lifting, resulting in air leakage, thereby delaying work progress. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes an air volume hood testing device.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a wind volume hood testing device, including a base plate, the left and right sides of the top of the base plate are fixedly connected with an outer tube, the inner side of the outer tube is slidably connected with an adjusting rod, the rear side of the adjusting rod is provided with a plurality of tooth grooves, a motor is fixedly installed in the middle part of the bottom end of the base plate, the output end of the motor is fixedly connected with a rotating rod, the outer side of one end of the rotating rod is fixedly connected with a first bevel gear, one end of the rotating rod is rotatably connected with a connecting sleeve, the inner side of the connecting sleeve is rotatably connected with a mounting rod, the middle part of the mounting rod is fixedly connected with a second bevel gear, the outer left and right sides of the mounting rod are fixedly connected with adjusting gears, and the first bevel gear and the second bevel gear are meshingly connected.

[0007] As a further description of the above technical solution:

[0008] A tester is fixedly installed on one end of the two adjusting rods, a cover is fixedly connected to the top of the tester, a plurality of slots are arranged on the top of the tester, a filter is arranged on the top of the tester, a slide groove is arranged on the outer side of the top of the filter, a cleaning brush is rotatably connected to the middle part of the top of the filter, a plurality of mounting sleeves are fixedly connected to the outer side of the bottom end of the filter, a block is slidably connected to the inner side of the mounting sleeve, a pull rod is fixedly connected to the top of the block, a spring is fixedly connected to the top of the block, and the other ends of the plurality of pull rods are fixedly connected to a connecting frame.

[0009] As a further description of the above technical solution:

[0010] The other end of the spring is fixedly connected to the inner top end of the mounting sleeve, a pull ring is fixedly connected to the middle of the connecting frame, and a handle is fixedly connected to the top end of the cleaning brush.

[0011] As a further description of the above technical solution:

[0012] The front side of the cleaning brush is slidably connected to the inner side of the slide groove, the front side of the outer tube is provided with a slide groove, and the left and right sides of the bottom end of the tester are rotatably connected with connecting rods.

[0013] As a further description of the above technical solution:

[0014] The other end of the connecting rod is rotatably connected with a sliding block, and the outer side of the sliding block is slidably connected to the inner side of the sliding groove.

[0015] As a further description of the above technical solution:

[0016] The left and right sides of the rear end of the bottom plate are fixedly connected with support rods, and both ends of the mounting rod are rotatably connected to the other ends of the support rods on the left and right sides.

[0017] As a further description of the above technical solution:

[0018] A push handle is fixedly connected to the middle part of the front side of the bottom plate, and a plurality of universal wheels are fixedly connected to the bottom end of the bottom plate.

[0019] The utility model has the following beneficial effects:

[0020] 1. In the utility model, through the mutual cooperation of the outer tube, the adjusting rod, the tooth groove, the rotating rod, the first bevel gear, the mounting rod, the second bevel gear and the adjusting gear, the air volume hood test device is provided with the function of flexibly adjusting the height of the air volume hood, so as to adapt to the height of the air outlet to be tested, thereby eliminating the need for manual lifting, saving time and effort, reducing the waste of human resources, thereby reducing the phenomenon of soreness of the staff's arms, reducing the deviation of the hood body, thereby reducing the phenomenon of air leakage, and improving the test efficiency.

[0021] 2. In the utility model, through the mutual cooperation of the card slot, filter screen, slide groove, cleaning brush, installation sleeve, card block, pull rod, connecting frame and spring, the air volume hood test device is added with the function of filtering the wind force during the test, and the phenomenon that the wind accompanied by impurities falls into the test port of the tester and causes the test accuracy to be reduced is reduced, the accuracy of the data during the test is improved, and the filter screen can be flexibly disassembled and assembled, thereby facilitating the cleaning of the filter screen and extending the service life of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of an air volume hood testing device proposed by the utility model;

[0023] Figure 2 A schematic diagram of the rotating rod structure of an air volume hood testing device proposed by the utility model;

[0024] Figure 3 A schematic diagram of the structure of an adjustment rod of an air volume hood testing device proposed by the utility model;

[0025] Figure 4 A schematic diagram of the connecting rod structure of an air volume hood testing device proposed by the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of a connecting frame of an air volume hood testing device proposed by the utility model;

[0027] Figure 6 The utility model provides a schematic diagram of a card slot structure of an air volume hood testing device.

[0028] Legend:

[0029] 1. Bottom plate; 2. Outer tube; 3. Adjustment rod; 4. Tooth groove; 5. Motor; 6. Rotation rod; 7. First bevel gear; 8. Connecting sleeve; 9. Mounting rod; 10. Second bevel gear; 11. Adjustment gear; 12. Tester; 13. Cover; 14. Slot; 15. Filter; 16. Slide; 17. Cleaning brush; 18. Mounting sleeve; 19. Block; 20. Pull rod; 21. Spring; 22. Connecting frame; 23. Pull ring; 24. Handle; 25. Slide groove; 26. Connecting rod; 27. Sliding block; 28. Support rod; 29. ​​Push handle; 30. Universal wheel. DETAILED DESCRIPTION

[0030] 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.

[0031] Reference Figure 1-6 The utility model provides an embodiment: an air volume hood testing device, including a bottom plate 1, the left and right sides of the top of the bottom plate 1 are fixedly connected with an outer tube 2, the inner side of the outer tube 2 is slidably connected with an adjusting rod 3, which is convenient for adjusting the height of the hood body 13, which is conducive to fitting the hood body 13 with the air outlet, and the rear side of the adjusting rod 3 is provided with a plurality of tooth grooves 4, which mesh with the adjusting gear 11, and a motor 5 is fixedly installed at the middle of the bottom end of the bottom plate 1, and the output end of the motor 5 is fixedly connected with a rotating rod 6 to drive the rotating rod 6 to rotate, and one end of the rotating rod 6 is fixedly connected to the outer side of the A bevel gear 7 is convenient for driving the first bevel gear 7 to rotate. One end of the rotating rod 6 is rotatably connected to a connecting sleeve 8. The inner side of the connecting sleeve 8 is rotatably connected to a mounting rod 9 for connecting the mounting rod 9. A second bevel gear 10 is fixedly connected to the middle of the mounting rod 9 for driving the two second bevel gears 10 to rotate. Adjustment gears 11 are fixedly connected to the left and right sides of the outside of the mounting rod 9 for driving the two adjusting rods 3 to move. The first bevel gear 7 and the second bevel gear 10 are meshingly connected, so that the first bevel gear 7 drives the second bevel gear 10 to rotate.

[0032] A tester 12 is fixedly installed at one end of the two adjustment rods 3, a cover 13 is fixedly connected to the top of the tester 12, a plurality of card slots 14 are arranged at the top of the tester 12, and the card block 19 is engaged with the top of the tester 12. A filter 15 is arranged at the top of the tester 12 to filter dust and impurities in the wind. A slide 16 is arranged on the outside of the top of the filter 15. A cleaning brush 17 is rotatably connected to the middle of the top of the filter 15 to clean the windward surface of the filter 15. The bottom of the filter 15 is fixedly connected to the outside of the filter 15. A plurality of mounting sleeves 18 are connected, and a block 19 is slidably connected to the inner side of the mounting sleeve 18 to facilitate the movement of the block 19. A pull rod 20 is fixedly connected to the top of the block 19 to pull the block 19. A spring 21 is fixedly connected to the top of the block 19 to increase the elastic force of the block 19. The other ends of the plurality of pull rods 20 are fixedly connected to a connecting frame 22 to facilitate pulling the plurality of pull rods 20 at the same time. The other end of the spring 21 is fixedly connected to the inner top of the mounting sleeve 18 to improve the elasticity of the spring 21. The stability of the tester 12 is improved by a pull ring 23 fixedly connected to the middle part of the connecting frame 22, a handle 24 is fixedly connected to the top of the cleaning brush 17, and the front side of the cleaning brush 17 is slidably connected to the inner side of the slide groove 16, which improves the stability of the cleaning brush 17. A sliding groove 25 is provided on the front side of the outer tube 2 to facilitate the sliding of the slider 27. The left and right sides of the bottom end of the tester 12 are rotatably connected to connecting rods 26 to improve the supporting force and stability of the tester 12. The other end of the connecting rod 26 is rotatably connected to a slider 27 to facilitate the sliding of the slider 27 when the connecting rod 26 moves. The outer side of the slider 27 is slidably connected to the inner side of the sliding groove 25 to improve the sliding stability of the slider 27. The left and right sides of the rear end of the bottom plate 1 are fixedly connected to support rods 28, and the two ends of the mounting rod 9 are rotatably connected to the other ends of the support rods 28 on the left and right sides to improve the stability of the mounting rod 9. A push handle 29 is fixedly connected to the middle part of the front side of the bottom plate 1, and a plurality of universal wheels 30 are fixedly connected to the bottom end of the bottom plate 1 to facilitate movement.

[0033] Working principle: When the height of the test device is adjusted, the motor 5 is started, and the motor 5 drives the rotation of the rotating rod 6, so that the rotating rod 6 drives the rotation of the first bevel gear 7, so that when the first bevel gear 7 is in meshing state with the second bevel gear 10, the second bevel gear 10 is driven to rotate, so that the second bevel gear 10 drives the installation rod 9 to rotate, so that the installation rod 9 drives the adjusting gears 11 on both sides to rotate, and the meshing state of the adjusting gear 11 and the tooth groove 4 drives the rise of the adjusting rods 3 on both sides, so as to facilitate the rise of the tester 12 and the cover body 13, so as to facilitate the flexible adjustment of the height of the air volume hood, so as to adapt to the height of the air outlet that needs to be tested, so that there is no need for manual lifting, which is more time-saving and labor-saving, reduces the waste of human resources, and thus reduces the phenomenon of soreness of the staff's arms. Then, when the test is carried out, the wind force is adjusted along with the air outlet. The dust discharged from the outlet reaches the interior of the cover body 13, and then is filtered by the filter 15 and tested, which is beneficial to use the filter 15 to filter the impurities and dust in the wind. If the filter mesh at the top of the filter 15 is clogged, turn the handle 24 to make the handle 24 drive the cleaning brush 17 to rotate, which is beneficial to use the cleaning brush 17 to sweep the dust on the top of the filter 15. When disassembling the filter 15, pull the pull ring 23, and the pull ring 23 drives the connecting frame 22 to rise, so that the connecting frame 22 drives multiple pull rods 20 to be pulled up, thereby squeezing the spring 21, and driving the card block 19 to be pulled up and detached from the inside of the card slot 14, so that the filter 15 is disassembled, reducing the impurities accompanied by wind and falling into the test port of the tester 12, resulting in reduced test accuracy. The accuracy of the data during the test is improved and it is beneficial to extend the service life of the filter 15.

[0034] 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 wind volume hood testing device, comprising a base plate (1), characterized in that: The top left and right sides of the bottom plate (1) are fixedly connected to outer tubes (2), the inner side of the outer tube (2) is slidably connected to an adjusting rod (3), the rear side of the adjusting rod (3) is provided with a plurality of tooth grooves (4), a motor (5) is fixedly mounted in the middle of the bottom end of the bottom plate (1), the output end of the motor (5) is fixedly connected to a rotating rod (6), one end of the rotating rod (6) is fixedly connected to a first bevel gear (7), one end of the rotating rod (6) is rotatably connected to a connecting sleeve (8), the inner side of the connecting sleeve (8) is rotatably connected to a mounting rod (9), the middle part of the mounting rod (9) is fixedly connected to a second bevel gear (10), the outer left and right sides of the mounting rod (9) are fixedly connected to adjusting gears (11), and the first bevel gear (7) and the second bevel gear (10) are meshingly connected.

2. The air volume hood testing device according to claim 1, characterized in that: A tester (12) is fixedly mounted on one end of the two adjusting rods (3), a cover body (13) is fixedly connected to the top of the tester (12), a plurality of slots (14) are arranged on the top of the tester (12), a filter screen (15) is arranged on the top of the filter screen (15), a slide groove (16) is arranged on the outside of the top of the filter screen (15), a cleaning brush (17) is rotatably connected to the middle of the top of the filter screen (15), a plurality of mounting sleeves (18) are fixedly connected to the outside of the bottom of the filter screen (15), a block (19) is slidably connected to the inside of the mounting sleeve (18), a pull rod (20) is fixedly connected to the top of the block (19), a spring (21) is fixedly connected to the top of the block (19), and a connecting frame (22) is fixedly connected to the other end of the plurality of pull rods (20).

3. The air volume hood testing device according to claim 2, characterized in that: The other end of the spring (21) is fixedly connected to the inner top end of the mounting sleeve (18), a pull ring (23) is fixedly connected to the middle of the connecting frame (22), and a handle (24) is fixedly connected to the top end of the cleaning brush (17).

4. The air volume hood testing device according to claim 2, characterized in that: The front side of the cleaning brush (17) is slidably connected to the inner side of the slide groove (16), the front side of the outer tube (2) is provided with a slide groove (25), and the left and right sides of the bottom end of the tester (12) are rotatably connected to connecting rods (26).

5. The air volume hood testing device according to claim 4, characterized in that: The other end of the connecting rod (26) is rotatably connected to a sliding block (27), and the outer side of the sliding block (27) is slidably connected to the inner side of the sliding groove (25).

6. The air volume hood testing device according to claim 1, characterized in that: The rear end of the bottom plate (1) is fixedly connected to support rods (28) on both left and right sides, and both ends of the mounting rod (9) are rotatably connected to the other ends of the support rods (28) on the left and right sides.

7. The air volume hood testing device according to claim 1, characterized in that: A push handle (29) is fixedly connected to the middle of the front side of the base plate (1), and a plurality of universal wheels (30) are fixedly connected to the bottom end of the base plate (1).

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