Device for testing noise reduction material

Abstract

The utility model relates to the technical field of testing devices, and discloses a device for testing a noise reduction material, which comprises a shell, two groups of observation windows are arranged on the outer wall of the front side of the shell, sound insulation doors are rotatably arranged below the two groups of observation windows, and a partition plate is fixedly arranged in the shell. According to the utility model, water in the two groups of circulating water tanks is driven to circulate through the operation of the circulating pump in the left simulation area, so that the operation noise of the motor and the noise during water flowing are simulated, and then the dripping tank and the simulation water tank simulate the spraying of the cooling tower through the operation of the water pump. According to the device, the internal environment of the cooling tower can be fully simulated, the noise source and the decibel detector are specifically adjusted through operation of the first motor and the second motor, the testing flexibility is further improved, and the testing quality can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of testing devices, and more particularly to a device for testing noise reduction materials. Background Art

[0002] Noise reduction materials refer to materials that can effectively isolate and absorb external noise. Through their special structure and material, they can reduce the spread and impact of noise. These materials are widely used in many fields such as construction, transportation, industrial equipment, aerospace, etc., and play a vital role in improving environmental noise and protecting people's hearing and physical and mental health.

[0003] The application of noise reduction materials can effectively reduce the propagation and reflection of noise, creating a quieter and more comfortable environment for people. However, the effectiveness of noise reduction materials needs to be verified through scientific and accurate testing. In actual applications, the effect of noise reduction materials is affected by many factors, such as the thickness and density of the material, as well as the frequency and intensity of the noise. Therefore, in order to accurately evaluate the performance of noise reduction materials, a device that can simulate the actual environment and accurately measure the noise reduction effect is needed.

[0004] Currently, when testing the noise reduction materials of cooling towers, since most of the noise from cooling towers comes from cooling water, the dripping of cooling water is usually simulated for testing. However, the water flow and dripping inside the cooling tower and the operation of the motor will all generate a certain amount of noise. The current testing equipment is relatively limited and cannot simulate multiple noises, so it needs to be improved and optimized. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a device for testing noise reduction materials, which has the advantage of high testing flexibility.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a device for testing noise reduction materials, comprising a housing, wherein two sets of observation windows are provided on a front outer wall of the housing, and soundproof doors are rotatably installed below the two sets of observation windows; a partition is fixedly installed inside the housing, and simulation areas are provided on the left and right sides above the partition, and test areas are provided on the left and right sides below the partition;

[0007] A movable bracket is installed inside the simulation area on the left, and a circulation pump is fixedly installed on the top of the movable bracket. Two sets of circulating water tanks are fixedly installed on the top of the movable bracket. One end of the two sets of circulating water tanks are interconnected through water pipes, and the other end of the two sets of circulating water tanks are interconnected through the circulation pump, which is responsible for simulating water flow and motor noise;

[0008] A simulated water tank is movably installed inside the simulation area on the right, a water suction pipe is fixedly installed inside the simulated water tank, a water pump is fixedly installed on the top of the shell, a drip tank is fixedly installed on the top of the shell, one end of the water pump and the drip tank are connected to each other, a bellows is fixedly installed on the other end of the water pump, and the bellows and the water suction pipe are connected to each other, which is responsible for simulating the noise of dripping water.

[0009] As a preferred technical solution of the present invention, the interiors of the two groups of test areas are fixedly installed with fixing grooves, and noise reduction materials are detachably installed inside the fixing grooves;

[0010] A pressure plate is movably installed on the top of the fixing groove, and the pressure plate is located between the noise reduction material and the fixing groove. A bolt is rotatably installed on the bottom of the pressure plate, and one end of the bolt passes through the bottom of the fixing groove. The bolt and the fixing groove are threadedly connected.

[0011] As an optimal technical solution of the present invention, a guide groove 1 is fixedly provided on the left side wall of the shell, a screw rod 1 is rotatably installed inside the guide groove 1, the screw rod 1 and the movable bracket are threadedly connected, one end of the movable bracket is movably installed inside the guide groove 1, a motor 1 is fixedly installed on the top of the shell, and the output shaft of the motor 1 is fixedly connected to the screw rod 1.

[0012] As an optimal technical solution of the present invention, a guide groove 2 is fixedly opened on the right side wall of the shell, a screw rod 2 is rotatably installed inside the guide groove 2, the screw rod 2 is threadedly connected to the simulated water tank, one end of the simulated water tank is movably installed inside the guide groove 2, a motor 2 is fixedly installed on the top of the shell, and the output shaft of the motor 2 is fixedly connected to the screw rod 2.

[0013] As a preferred technical solution of the present invention, decibel detectors are fixedly installed inside the two groups of test areas, and the decibel detectors are located below the noise reduction material.

[0014] As a preferred technical solution of the present invention, the pressing plate and the noise reduction material abut against each other, and the top of the noise reduction material blocks the bottom of the partition.

[0015] As a preferred technical solution of the present invention, the dripping box is located on the top of the simulated water tank, and a dripping hole responsible for simulating dripping is opened at the bottom of the dripping box.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. The utility model drives the water inside the two sets of circulating water tanks to circulate through the operation of the internal circulation pump in the left simulation area, thereby simulating the running noise of the motor and the noise of the water flow, and then through the operation of the water pump, the drip tank and the simulation water tank simulate the spraying of the cooling tower. Compared with the traditional device, the device can fully simulate the environment inside the cooling tower. Through the operation of motor 1 and motor 2, the specific adjustment between the noise source and the decibel detector is made, which further improves the flexibility of the test and can effectively improve the test quality.

[0018] 2. The utility model positions the noise reduction material through the fixing groove, and by rotating the bolts, the two sets of pressure plates push the noise reduction material upward, so that the noise reduction material and the partition are closely fitted, simulating the installation of the noise reduction material. Compared with the traditional device, the device is simple to install and firmly fixed when testing the noise reduction material, and can also ensure the close fit between the noise reduction material and the partition, so that the noise reduction characteristics of the noise reduction material are utilized to the greatest extent, ensuring the accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the circulating water tank of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the simulated water tank of the utility model;

[0023] Figure 5 This is a schematic diagram of the internal structure of the test area of ​​the utility model;

[0024] Figure 6 This is a schematic diagram of the pressing plate structure of the utility model.

[0025] In the figure: 1. Outer casing; 2. Observation window; 3. Soundproof door; 4. Simulation area; 5. Test area; 6. Partition; 7. Movable bracket; 8. Circulation pump; 9. Circulation water tank; 10. Guide groove 1; 11. Screw rod 1; 12. Motor 1; 13. Simulation water tank; 14. Guide groove 2; 15. Screw rod 2; 16. Motor 2; 17. Water pump; 18. Drip tank; 19. Suction pipe; 20. Bellows; 21. Decibel meter; 22. Noise reduction material; 23. Fixing groove; 24. Pressure plate; 25. Bolt. DETAILED DESCRIPTION

[0026] 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.

[0027] like Figures 1 to 6 As shown, the utility model provides a device for testing noise reduction materials, comprising a housing 1, two sets of observation windows 2 are opened on the front outer wall of the housing 1, and sound insulation doors 3 are rotatably installed below the two sets of observation windows 2. A partition 6 is fixedly installed inside the housing 1, and simulation areas 4 are opened on the left and right sides above the partition 6, and test areas 5 are opened on the left and right sides below the partition 6.

[0028] A movable bracket 7 is movably installed inside the left simulation area 4. A circulating pump 8 is fixedly installed on the top of the movable bracket 7. Two sets of circulating water tanks 9 are fixedly installed on the top of the movable bracket 7. One end of the two sets of circulating water tanks 9 are interconnected through water pipes, and the other end of the two sets of circulating water tanks 9 are interconnected through the circulating pump 8, which is responsible for simulating water flow and motor noise;

[0029] A simulated water tank 13 is movably installed inside the simulation area 4 on the right side, and a water extraction pipe 19 is fixedly installed inside the simulated water tank 13. A water pump 17 is fixedly installed on the top of the outer shell 1, and a dripping tank 18 is fixedly installed on the top of the outer shell 1. One end of the water pump 17 and the dripping tank 18 are connected to each other, and a bellows 20 is fixedly installed on the other end of the water pump 17. The bellows 20 and the water extraction pipe 19 are connected to each other, which is responsible for simulating the noise of dripping water.

[0030] When testing the noise reduction material 22, the staff first ensures that there is enough water for simulation inside the circulating water tank 9 and the simulation water tank 13, and then the staff starts the circulation pump 8 and the water pump 17 in turn. The operation of the circulation pump 8 drives the water inside the two sets of circulating water tanks 9 to circulate, thereby simulating the running noise of the motor and the noise of the water flow, and the operation of the water pump 17 will suck the water inside the simulation water tank 13 into the drip tank 18 through the suction pipe 19 and the bellows 20, and spray it out from the drip tank 18. The water sprayed from the drip tank 18 will drip into the inside of the simulation water tank 13, further simulating the spraying of the cooling tower. At this time, the decibel detector 21 will collect the noise decibels when there is no noise reduction material 22, and then the staff will open the soundproof door 3 and put the noise reduction material 22 into the fixing groove 23. Then the staff will turn the bolt 25, and the rotation of the bolt 25 drives itself to As the top of the fixing groove 23 moves, two sets of pressure plates 24 further push the noise reduction material 22 upward, so that the noise reduction material 22 blocks the bottom of the partition 6, simulating the installation of the noise reduction material 22. At this time, the staff starts the circulation pump 8 and the water pump 17 in sequence, so that the decibel detector 21 collects the noise after the noise reduction material 22 is isolated. After multiple collection and comparison, the noise reduction efficiency of the noise reduction material 22 can be obtained. During the test, the staff can also adjust the distance between the noise and the decibel detector 21 through motor 1 12 and motor 2 16. At this time, the operation of motor 1 12 drives screw 1 11 to rotate, and further drives the movable bracket 7 threadedly connected to it to move up and down, while the operation of motor 2 16 drives screw 2 15 to rotate, and further drives the simulated water tank 13 threadedly connected to it to move up and down, thereby realizing multiple noise simulations.

[0031] The operation of the internal circulation pump 8 of the left simulation area 4 drives the water inside the two sets of circulating water tanks 9 to circulate, thereby simulating the running noise of the motor and the noise of the water flow, and then the operation of the water pump 17 makes the drip tank 18 and the simulation water tank 13 simulate the spraying of the cooling tower. Compared with the traditional device, this device can fully simulate the environment inside the cooling tower. Through the operation of motor 1 12 and motor 2 16, the specific adjustment between the noise source and the decibel detector 21 is made, which further improves the flexibility of the test and can effectively increase the test quality.

[0032] The two test areas 5 are both fixedly installed with a fixing groove 23, and the inside of the fixing groove 23 is detachably installed with a noise reduction material 22;

[0033] A pressure plate 24 is movably installed on the top of the fixing groove 23, and the pressure plate 24 is located between the noise reduction material 22 and the fixing groove 23. A bolt 25 is rotatably installed on the bottom of the pressure plate 24, and one end of the bolt 25 passes through the bottom of the fixing groove 23, and the bolt 25 and the fixing groove 23 are threadedly connected.

[0034] The staff opens the soundproof door 3 and puts the noise reduction material 22 into the fixing groove 23. Then the staff turns the bolt 25. The rotation of the bolt 25 drives itself to move toward the top of the fixing groove 23. Further, the two sets of pressure plates 24 push the noise reduction material 22 upward, so that the noise reduction material 22 blocks the bottom of the partition 6, simulating the installation of the noise reduction material 22.

[0035] The noise reduction material 22 is positioned through the fixing groove 23, and the two sets of pressure plates 24 are pushed upward by rotating the bolts 25, so that the noise reduction material 22 and the partition 6 are tightly fitted together, simulating the installation of the noise reduction material 22. Compared with traditional devices, this device is simple to install and firmly fixed when testing the noise reduction material 22, and can also ensure a tight fit between the noise reduction material 22 and the partition 6, so that the noise reduction characteristics of the noise reduction material 22 are utilized to the greatest extent, ensuring the accuracy of the test.

[0036] Among them, a guide groove 10 is fixedly opened on the left side wall of the shell 1, and a screw rod 11 is rotatably installed inside the guide groove 10. The screw rod 11 and the movable bracket 7 are threadedly connected, and one end of the movable bracket 7 is movably installed inside the guide groove 10. A motor 12 is fixedly installed on the top of the shell 1, and the output shaft of the motor 12 is fixedly connected to the screw rod 11.

[0037] The operation of the motor 12 drives the screw 11 to rotate, which further drives the movable bracket 7 threadedly connected to it to move up and down.

[0038] Among them, a guide groove 2 14 is fixedly opened on the right side wall of the shell 1, and a screw rod 2 15 is rotatably installed inside the guide groove 2 14. The screw rod 2 15 and the simulated water tank 13 are threadedly connected, and one end of the simulated water tank 13 is movably installed inside the guide groove 2 14. A motor 2 16 is fixedly installed on the top of the shell 1, and the output shaft of the motor 2 16 is fixedly connected to the screw rod 2 15.

[0039] The operation of the second motor 16 drives the second screw rod 15 to rotate, and further causes the second screw rod 15 to drive the simulated water tank 13 threadedly connected thereto to move up and down.

[0040] A decibel detector 21 is fixedly installed inside the two groups of test areas 5 , and the decibel detector 21 is located below the noise reduction material 22 .

[0041] The decibel detector 21 is responsible for receiving the noise transmitted by the two groups of simulation areas 4 and converting the noise into specific values ​​for observation by staff.

[0042] The pressing plate 24 and the noise reduction material 22 abut against each other, and the top of the noise reduction material 22 blocks the bottom of the partition 6 .

[0043] The noise reduction material 22 blocks the bottom of the partition 6, so that the noise reduction characteristics of the noise reduction material 22 are utilized to the greatest extent, ensuring the accuracy of the test.

[0044] The dripping box 18 is located on the top of the simulated water tank 13 , and a dripping hole for simulating dripping water is provided at the bottom of the dripping box 18 .

[0045] Spraying operations will be carried out inside the cooling tower, and the drip tank 18 and the simulated water tank 13 are responsible for simulating the noise generated by water flow hitting the filler and the water collection tank.

[0046] The working principle and use process of this utility model:

[0047] When testing the noise reduction material 22, the staff first ensures that there is enough water for simulation inside the circulating water tank 9 and the simulation water tank 13, and then the staff starts the circulation pump 8 and the water pump 17 in turn. The operation of the circulation pump 8 drives the water inside the two sets of circulating water tanks 9 to circulate, thereby simulating the running noise of the motor and the noise of the water flow, and the operation of the water pump 17 will suck the water inside the simulation water tank 13 into the drip tank 18 through the suction pipe 19 and the bellows 20, and spray it out from the drip tank 18. The water sprayed from the drip tank 18 will drip into the inside of the simulation water tank 13, further simulating the spraying of the cooling tower. At this time, the decibel detector 21 will collect the noise decibels when there is no noise reduction material 22, and then the staff will open the soundproof door 3 and put the noise reduction material 22 into the fixing groove 23. Then the staff will turn the bolt 25, and the rotation of the bolt 25 drives itself to As the top of the fixing groove 23 moves, two sets of pressure plates 24 further push the noise reduction material 22 upward, so that the noise reduction material 22 blocks the bottom of the partition 6, simulating the installation of the noise reduction material 22. At this time, the staff starts the circulation pump 8 and the water pump 17 in sequence, so that the decibel detector 21 collects the noise after the noise reduction material 22 is isolated. After multiple collection and comparison, the noise reduction efficiency of the noise reduction material 22 can be obtained. During the test, the staff can also adjust the distance between the noise and the decibel detector 21 through motor 1 12 and motor 2 16. At this time, the operation of motor 1 12 drives screw 1 11 to rotate, and further drives the movable bracket 7 threadedly connected to it to move up and down, while the operation of motor 2 16 drives screw 2 15 to rotate, and further drives the simulated water tank 13 threadedly connected to it to move up and down, thereby realizing multiple noise simulations.

[0048] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for testing noise reduction materials, comprising a housing (1), characterized in that: Two groups of observation windows (2) are provided on the front outer wall of the housing (1), and soundproof doors (3) are rotatably installed below the two groups of observation windows (2). A partition (6) is fixedly installed inside the housing (1), and simulation areas (4) are provided on the left and right sides above the partition (6), and test areas (5) are provided on the left and right sides below the partition (6); A movable bracket (7) is movably installed inside the simulation area (4) on the left side, a circulating pump (8) is fixedly installed on the top of the movable bracket (7), and two groups of circulating water tanks (9) are fixedly installed on the top of the movable bracket (7). One end of the two groups of circulating water tanks (9) are interconnected through water pipes, and the other end of the two groups of circulating water tanks (9) are interconnected through the circulating pump (8), which is responsible for simulating water flow and motor noise; A simulated water tank (13) is movably installed inside the simulation area (4) on the right side, a water extraction pipe (19) is fixedly installed inside the simulated water tank (13), a water pump (17) is fixedly installed on the top of the shell (1), a dripping tank (18) is fixedly installed on the top of the shell (1), one end of the water pump (17) and the dripping tank (18) are connected to each other, and a bellows (20) is fixedly installed on the other end of the water pump (17), and the bellows (20) and the water extraction pipe (19) are connected to each other, which is responsible for simulating the noise of dripping water.

2. The device for testing noise reduction materials according to claim 1, characterized in that: The interiors of the two groups of test areas (5) are fixedly installed with fixing grooves (23), and the interiors of the fixing grooves (23) are detachably installed with noise reduction materials (22); A pressure plate (24) is movably mounted on the top of the fixing groove (23), and the pressure plate (24) is located between the noise reduction material (22) and the fixing groove (23). A bolt (25) is rotatably mounted on the bottom of the pressure plate (24), and one end of the bolt (25) passes through the bottom of the fixing groove (23), and the bolt (25) and the fixing groove (23) are threadedly sleeved.

3. The device for testing noise reduction materials according to claim 1, characterized in that: A guide groove (10) is fixedly provided on the left side wall of the housing (1), a screw rod (11) is rotatably installed inside the guide groove (10), the screw rod (11) and the movable bracket (7) are threadedly connected, one end of the movable bracket (7) is movably installed inside the guide groove (10), a motor (12) is fixedly installed on the top of the housing (1), and the output shaft of the motor (12) is fixedly connected to the screw rod (11).

4. The device for testing noise reduction materials according to claim 1, characterized in that: The right side wall of the housing (1) is fixedly provided with a second guide groove (14), the interior of the second guide groove (14) is rotatably mounted with a second screw rod (15), the second screw rod (15) and the simulated water tank (13) are threadedly sleeved, one end of the simulated water tank (13) is movably mounted inside the second guide groove (14), the top of the housing (1) is fixedly mounted with a second motor (16), the output shaft of the second motor (16) and the second screw rod (15) are fixedly connected.

5. The device for testing noise reduction materials according to claim 2, characterized in that: A decibel detector (21) is fixedly installed inside the two groups of test areas (5), and the decibel detector (21) is located below the noise reduction material (22).

6. The device for testing noise reduction materials according to claim 2, characterized in that: The pressure plate (24) and the noise reduction material (22) abut against each other, and the top of the noise reduction material (22) blocks the bottom of the partition (6).

7. The device for testing noise reduction materials according to claim 1, characterized in that: The dripping box (18) is located on the top of the simulated water tank (13), and a dripping hole responsible for simulating dripping is opened at the bottom of the dripping box (18).

Images