Environmental noise monitoring device

Abstract

The utility model relates to an environmental noise monitoring device, and relates to the technical field of monitoring equipment. A heat dissipation groove is formed in the side wall of the machine body in a penetrating mode, an installation box communicated with the heat dissipation groove is fixed to the outer side wall of the machine body, the bottom of the installation box is communicated with an air inlet pipe, the top end of the air inlet pipe is arranged in the installation box in a penetrating mode, and a fan is installed in the installation box through an installation plate and located between the heat dissipation groove and the air inlet pipe. Two parallel sponge plates are arranged in the mounting box, the sponge plates can completely cover the top opening of the air inlet pipe, a driving assembly is arranged in the mounting box, and the driving assembly is connected with the two sponge plates and used for driving the positions of the two sponge plates to be switched. The device has the effects that the cleaning and replacing time of the sponge plate is prolonged, and the working efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of monitoring equipment, and in particular to an environmental noise monitoring device. Background Art

[0002] From a physiological point of view, any sound that interferes with people's rest, study, work, or the sounds they want to hear is called unwanted sound. When noise has a negative impact on people and the surrounding environment, it constitutes noise pollution.

[0003] In the related art, a Chinese patent with authorization announcement number CN215064873U discloses a noise detection device for noise detection, comprising a body, a display screen on the front of the body, a heat dissipation slot on the side of the body, a fixed box fixedly connected to the side of the body, a horizontal plate fixedly connected to the inner surface of the fixed box, a fan fixedly mounted on the bottom surface of the horizontal plate, and a through-hole on the bottom surface of the fixed box. The noise detection device is configured by mounting a fixed box on the side of the body, located on the side of the heat dissipation slot, adding a fan inside the fixed box, and threading a connecting pipe connected to the fixed box on the bottom surface of the fixed box. A filter plate is fixedly sleeved in the connecting pipe, and a sponge is added on top of the filter plate. The filter plate's filtering and supporting effects are utilized to support the sponge and absorb water vapor and filter fine dust.

[0004] When the sponge absorbs too much water, the water absorption effect of the sponge becomes worse. At this time, the sponge needs to be cleaned and replaced in time. There are three connecting tubes on each fixed box, so multiple sponges need to be replaced in sequence, which is inconvenient to operate. The aperture size of the connecting tube limits the size of the sponge, which limits the amount of water absorbed by the sponge. As a result, the frequency of replacing and cleaning the sponge is high, resulting in inconvenient operation and low work efficiency, so it needs to be improved. Utility Model Content

[0005] In order to improve the problem of low work efficiency caused by the need to frequently replace sponges, the present application provides an environmental noise monitoring device.

[0006] The present application provides an environmental noise monitoring device that adopts the following technical solution:

[0007] An environmental noise monitoring device includes a body, a heat dissipation groove is opened through the side wall of the body, a mounting box connected to the heat dissipation groove is fixed on the outer side wall of the body, the bottom of the mounting box is connected to an air intake pipe, the top end of the air intake pipe is passed through the mounting box, a fan is installed in the mounting box through a mounting plate, the fan is located between the heat dissipation groove and the air intake pipe, two sponge plates parallel to each other are provided in the mounting box, the sponge plates can completely cover the top opening of the air intake pipe, and a drive assembly is provided in the mounting box, the drive assembly is connected to the two sponge plates, and is used to drive the position conversion of the two sponge plates.

[0008] By adopting the above technical solution, when in use, the fan is started to suck the air outside the installation box into the installation box, so that the air enters from the bottom end of the air inlet pipe and is discharged from the top of the air inlet pipe along the air inlet pipe to the installation box. In the initial state, one of the sponge boards is placed on the top of the air inlet pipe and covers the air inlet pipe, while the other sponge board is located above the fan, so that the gas in the air inlet pipe needs to pass through the air inlet pipe to enter the installation box. In the process of the gas passing through the sponge board, the sponge board absorbs water vapor in the gas and restricts the passage of fine dust, so that the gas entering the installation box is relatively clean. Finally, the gas enters the machine body through the heat dissipation groove, and the original gas in the machine body is discharged through the heat dissipation groove on the other side of the machine body, realizing the heat exchange of the machine body. At the same time, relatively clean gas enters the machine body, improving the dust and water proof effect of the machine body, so that the use effect of the machine body is good.

[0009] When the sponge plate covering the top of the intake pipe absorbs too much water vapor and dust, the adsorption effect of the sponge plate becomes poor. At this time, the drive assembly drives the two sponge plates to switch positions up and down. That is, the clean sponge plate originally located above the fan now contacts the top of the intake pipe and covers the top of the intake pipe, so that the water vapor and dust in the gas can be adsorbed again, so that the cleaner gas can be used for heat exchange with the machine body. The sponge plate that absorbs excessive water vapor and dust moves to the top of the fan, which will not affect the entry of the intake pipe. The setting of two sponge plates can ensure that even if one of the sponge plates loses its good adsorption effect, the machine body can still continuously pass through relatively clean gas for heat exchange, which prolongs the time for cleaning and replacing the sponge plates and improves work efficiency.

[0010] Optionally, the driving assembly includes a driving sleeve and a connecting rod, the driving sleeve is horizontally passed through one side of the installation box, the driving sleeve can be on the installation box with the central axis of the driving sleeve as the axis, the middle part of the connecting rod is fixed on the driving rod, and the connecting rod is perpendicular to the driving sleeve, and the two sponge plates are respectively arranged at both ends of the connecting rod.

[0011] By adopting the above technical solution, the drive sleeve is driven to rotate about its central axis, thereby driving the connecting rod to rotate about the drive sleeve as the axis. That is, the sponge board moves in a circle with the central axis of the drive sleeve as the center and the connecting rod as the diameter, thereby achieving the position switching between the upper and lower sponge boards. The mounting plate and fan are located within the circular area formed by the movement of the sponge board, which means that they will not interfere with the movement of the sponge board and can always be aligned with the sponge board on the air intake pipe.

[0012] Optionally, a driving rod is coaxially inserted in the driving sleeve, a slider is fixed on the side wall of the driving rod, a sliding groove is opened on the inner wall of the driving sleeve along the axial direction of the driving sleeve, the slider is inserted in the sliding groove and can move in the sliding groove, and the driving rod extends out of the mounting box away from the connecting rod and is fixed with a handle.

[0013] By adopting the above technical solution, manually driving the handle to rotate causes the drive rod to rotate about its central axis. As the side wall of the slider abuts the inner wall of the chute, a thrust is applied to the inner wall of the chute, which in turn causes the drive sleeve to rotate with the rotation of the drive rod, thereby enabling the connecting rod to drive the two sponge plates to rotate. The handle provides a force-applying area for the hand, making it easier to drive the drive rod to rotate, saving time and effort.

[0014] Optionally, two fixing grooves are provided on the outer side wall of the installation box, and the two fixing grooves are symmetrically arranged with the central axis of the driving rod as the axis, and the handle can be inserted into the fixing grooves.

[0015] By adopting the above technical solution, the handle is pulled out of the fixed groove, allowing the slider to slide in the groove, thereby driving the handle to rotate. After the handle is rotated 180°, the two sponge plates in the installation box are switched up and down. The handle is then moved toward the installation box so that the handle is stuck in the corresponding fixed groove. At this time, the inner wall of the fixed groove abuts against the side wall of the handle, restricting the handle so that it cannot rotate, thereby fixing the connecting rod and increasing the stability of the sponge plate abutting against the top of the air intake pipe. The angle between the two fixed grooves is 180°, so it is only necessary to ensure that each time the handle rotates from one fixed groove to the other, the connecting rod can drive the sponge plate to move half a circle, so that the upper and lower sponge plates are switched, ensuring that there is always a sponge plate abutting against the top of the air intake pipe.

[0016] Optionally, a magnet is fixed on the inner wall of the fixing groove, and an iron sheet is fixed on the side wall of the handle, and the iron sheet can be attracted to the magnet.

[0017] By adopting the above technical solution, when the handle is inserted into the fixing groove, the magnet and the iron sheet are attracted to each other, making it difficult for the handle to fall out of the fixing groove, thereby increasing the stability of the handle fixed in the fixing groove, thereby further increasing the stability of the sponge plate against the top of the intake pipe.

[0018] Optionally, the sponge plate includes a support plate and a sponge cover, the support plate is connected to the connecting rod, a cavity is opened in the support plate, a plurality of air inlet holes are opened through the side wall of the support plate away from the fan, a plurality of filter holes are opened through the side wall of the support plate close to the fan, the air inlet holes and the filter holes are connected, and the sponge cover is arranged on the support plate.

[0019] By adopting the above technical solution, when the gas outside the installation box enters from the bottom of the air inlet pipe and reaches the top of the air inlet pipe along the air inlet pipe, the gas first passes through the sponge sleeve, which absorbs water vapor in the gas, and then the gas passes through the air inlet hole, which limits some dust in the gas from entering the cavity, and then the gas passes through the filter hole to reach the sponge sleeve on the other side of the support plate for further absorption of water vapor, so that the gas that finally enters the body through the heat dissipation groove is relatively clean, thereby improving the dust and water proof effect of the body and making the use effect of the body good.

[0020] Optionally, the inner diameter of the air inlet hole is larger than the inner diameter of the filter hole.

[0021] By adopting the above technical solution, when the gas in the intake pipe passes through the air intake hole into the cavity, the gas then passes through the filter hole to reach the installation box. Since the inner diameter of the filter hole is smaller than the inner diameter of the air intake hole, the filter hole can further filter the dust in the gas, making the gas entering the installation box cleaner, thereby further improving the dust-proof effect of the body.

[0022] Optionally, the connecting rod is provided with two opposite fixed plates, the fixed plates are hinged to the connecting rod by a torsion spring, the support plate is located between the two fixed plates, the torsion spring is used to drive the two fixed plates close to each other, a fixed block is fixed on the side where the two fixed plates are close to each other, and a mounting hole for inserting the fixed block is opened on the side wall of the support plate, and the fixed plate can press the sponge cover against the side wall of the support plate.

[0023] By adopting the above technical solution, during installation, the sponge cover is first wrapped and placed on the support plate, and then the support plate is placed between the two fixed plates. Under the action of the torsion spring, the fixed plate rotates in the direction of the support plate until the fixed plate abuts against the sponge cover, and the fixed block is inserted into the mounting hole. Both fixed plates apply a clamping force to the support plate, thereby increasing the stability of the fixed block inserted in the mounting hole, and the side wall of the fixed block abuts against the inner wall of the mounting hole, so that the support plate will not move at will, thereby achieving the fixation of the support plate on the connecting rod, and at the same time the sponge cover is clamped between the fixed plate and the support plate, achieving the fixed installation of the sponge cover on the support plate.

[0024] In summary, this application has at least one of the following beneficial effects:

[0025] 1. When the sponge plate covering the top of the air intake pipe absorbs too much water vapor and dust, the drive assembly drives the two sponge plates to switch positions, so that the clean sponge plate originally located above the fan now contacts the top of the air intake pipe, allowing the water vapor and dust in the gas to be adsorbed again, so that the cleaner gas can be used for heat exchange with the machine body. The setting of two sponge plates can ensure that even if one sponge plate loses its good adsorption effect, the machine body can still continuously enter the cleaner gas for heat exchange, which prolongs the time for cleaning and replacing the sponge plates and improves work efficiency.

[0026] 2. The drive sleeve is driven to rotate about its central axis, thereby driving the connecting rod to rotate about the drive sleeve. That is, the sponge board moves in a circle with the central axis of the drive sleeve as the center and the connecting rod as the diameter, thereby realizing the position switching of the upper and lower sponge boards. The mounting plate and fan are located in the circular area formed by the movement of the sponge board, which means that they will not interfere with the movement of the sponge board and can always be aligned with the sponge board on the air intake pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of an environmental noise monitoring device according to an embodiment of the present application;

[0028] Figure 2 It is a structural cross-sectional view of the installation box;

[0029] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0030] Figure 4 Schematic diagram of the structure of the sponge board.

[0031] In the figure: 10, body; 11, heat dissipation slot; 20, mounting box; 21, fixing slot; 22, magnet; 30, air inlet pipe; 40, drive assembly; 41, drive sleeve; 411, slide slot; 42, connecting rod; 50, drive rod; 51, slider; 52, handle; 521, iron sheet; 60, sponge board; 61, support plate; 611, air inlet hole; 612, filter hole; 613, cavity; 614, mounting hole; 62, sponge sleeve; 70, fixing plate; 71, fixing block; 80, torsion spring; 90, mounting plate; 110, fan. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] The embodiment of the present application discloses an environmental noise monitoring device. Figure 1 and Figure 2The environmental noise monitoring device includes a body 10 for monitoring noise. Heat dissipation slots 11 are formed through two opposing side walls of the body 10. Two mounting boxes 20 are fixed to the outer side wall of the body 10. The two mounting boxes 20 correspond to and communicate with the heat dissipation slots 11. The mounting box 20 has an opening on the side wall opposite the heat dissipation slot 11, and a hinged cover plate is provided to close or open the opening, facilitating installation, removal, and cleaning of the structure in the mounting box 20. An air intake duct 30 is provided through the bottom of the mounting box 20. The air intake duct 30 extends vertically downward, with the top end of the air intake duct 30 extending into and communicating with the mounting box 20, while the bottom end of the air intake duct 30 extends out of the mounting box 20. A horizontal mounting plate 90 is fixed to the inner wall of the mounting box 20. A fan 110 is provided on the mounting plate 90. The fan 110 is located between the heat dissipation slot 11 and the air intake duct 30.

[0034] Reference Figure 1 and Figure 2 Two sponge boards 60 parallel to each other are provided in the installation box 20. The sponge boards 60 are arranged horizontally, and the two sponge boards 60 are respectively located on the upper and lower sides of the fan 110. When the sponge board 60 abuts against the top wall of the air intake pipe 30, the sponge board 60 can completely cover the top opening of the air intake pipe 30. A driving assembly 40 is provided in the installation box 20. The driving assembly 40 is connected to the two sponge boards 60 for driving the position conversion of the two sponge boards 60.

[0035] Reference Figure 2 and Figure 3 The drive assembly 40 includes a drive sleeve 41 and a connecting rod 42. The drive sleeve 41 is horizontally inserted into one side of the installation box 20, wherein the side wall of the installation box 20 where the drive sleeve 41 is located faces the side wall of the installation box 20 connected to the mounting plate 90. The drive sleeve 41 can be arranged on the installation box 20 with the central axis of the drive sleeve 41 as the axis. The connecting rod 42 is vertically arranged. The middle portion of the connecting rod 42 is fixed to the drive rod 50. Two sponge plates 60 are respectively provided at both ends of the connecting rod 42.

[0036] Reference Figure 2 and Figure 3 A driving rod 50 is coaxially inserted in the driving sleeve 41, a slider 51 is fixed on the side wall of the driving rod 50, a sliding groove 411 is opened on the inner wall of the driving sleeve 41 along the axial direction of the driving sleeve 41, the slider 51 is inserted in the sliding groove 411 and can move in the sliding groove 411, and the end of the driving rod 50 away from the connecting rod 42 extends out of the mounting box 20 and is fixed with a handle 52.

[0037] When in use, the fan 110 is started to suck the air outside the installation box 20 into the installation box 20, so that the air enters from the bottom end of the air inlet pipe 30 and is discharged from the top of the air inlet pipe 30 to the installation box 20 along the air inlet pipe 30. In the initial state, one of the sponge plates 60 is placed on the top of the air inlet pipe 30 and covers the air inlet pipe 30, while the other sponge plate 60 is located above the fan 110, so that the air in the air inlet pipe 30 needs to pass through the air inlet pipe 30 to enter the installation box 20. In the process of the air passing through the sponge plate 60, the sponge plate 60 absorbs the water vapor in the air and restricts the passage of fine dust, so that the air entering the installation box 20 is relatively clean, and finally the air enters the machine body 10 through the heat dissipation groove 11, and the original air in the machine body 10 is discharged through the heat dissipation groove 11 on the other side of the machine body 10, realizing heat exchange of the machine body 10, and at the same time, relatively clean air enters the machine body 10, improving the dust and water proof effect of the machine body 10, and making the use effect of the machine body 10 good.

[0038] Reference Figure 2 and Figure 3 When the sponge plate 60 covering the top of the air intake pipe 30 absorbs too much water vapor and dust, the adsorption effect of the sponge plate 60 becomes poor. At this time, the manual driving handle 52 is rotated, so that the driving rod 50 rotates with the central axis of the driving rod 50 as the axis. Because the side wall of the slider 51 abuts against the inner wall of the slide groove 411, a thrust is applied to the inner wall of the slide groove 411, and then the driving sleeve 41 rotates with the rotation of the driving rod 50, driving the connecting rod 42 to rotate, that is, the sponge plate 60 makes a circular motion with the central axis of the driving sleeve 41 as the center and the connecting rod 42 as the diameter, thereby realizing the position conversion of the upper and lower sponge plates 60.

[0039] That is, the clean sponge board 60, which was originally located above the fan 110, now abuts against the top of the air inlet pipe 30 and covers it, allowing moisture and dust in the air to be absorbed again, so that the relatively clean air can be used for heat exchange with the body 10. The sponge board 60 that has absorbed excessive moisture and dust is moved above the fan 110 without affecting the air entering the air inlet pipe 30. The provision of two sponge boards 60 ensures that even if one of the sponge boards 60 loses its good adsorption effect, relatively clean air can still be continuously passed into the body 10 for heat exchange, thereby extending the time required to clean and replace the sponge boards 60 and improving work efficiency.

[0040] Reference Figure 1 and Figure 4To increase the stability of the sponge board 60 against the top of the air intake pipe 30, two fixing grooves 21 are defined on the outer wall of the mounting box 20. The two fixing grooves 21 are collinear and interconnected, and the drive rod 50 is located at the junction of the two fixing grooves 21. That is, the two fixing grooves 21 are arranged symmetrically about the central axis of the drive rod 50, and the handle 52 can be inserted into the fixing groove 21. A magnet 22 is fixed to the inner wall of the fixing groove 21, and an iron sheet 521 is fixed to the side wall of the handle 52. When the handle 52 is inserted into the fixing groove 21, the magnet 22 and the iron sheet 521 are attracted to each other.

[0041] Reference Figure 3 and Figure 4 When the handle 52 is rotated 180 degrees, the two sponge boards 60 in the installation box 20 are switched up and down, and the handle 52 is moved toward the installation box 20, so that the handle 52 is stuck in the corresponding fixing groove 21, and the magnet 22 is attracted to the iron sheet 521. At this time, the inner wall of the fixing groove 21 abuts against the side wall of the handle 52, which restricts the handle 52 and prevents the handle 52 from rotating, that is, the connecting rod 42 is fixed, thereby increasing the stability of the sponge board 60 against the top of the intake pipe 30.

[0042] The angle between the two fixing grooves 21 is 180°, so it is only necessary to ensure that each time the handle 52 is rotated from one fixing groove 21 to the other fixing groove 21, the connecting rod 42 can drive the sponge plate 60 to move half a circle, so that the positions of the upper and lower sponge plates 60 are switched, ensuring that there is always a sponge plate 60 abutting against the top of the intake pipe 30.

[0043] Reference Figure 2 and Figure 4 The sponge plate 60 includes a support plate 61 and a sponge cover 62. The support plate 61 is connected to the connecting rod 42. A cavity 613 is provided in the support plate 61. A plurality of air inlet holes 611 are provided on the side wall of the support plate 61 away from the fan 110. A plurality of filter holes 612 are provided on the side wall of the support plate 61 close to the fan 110. The air inlet holes 611 and the filter holes 612 are connected. The inner diameter of the filter holes 612 is smaller than the inner diameter of the air inlet holes 611. The sponge cover 62 is sleeved on the support plate 61.

[0044] When the gas outside the installation box 20 enters from the bottom of the air inlet pipe 30 and reaches the top of the air inlet pipe 30 along the air inlet pipe 30, the gas first passes through the sponge cover 62, and the sponge cover 62 absorbs the water vapor in the gas. Then the gas passes through the air inlet hole 611, and the air inlet hole 611 restricts some dust in the gas from entering the cavity 613. Then the gas passes through the filter hole 612. Because the inner diameter of the filter hole 612 is smaller than the inner diameter of the air inlet hole 611, the filter hole 612 can further filter the dust in the gas.

[0045] The gas passing through the filter hole 612 then reaches the sponge cover 62 on the other side of the support plate 61 for further absorption of water vapor, so that the gas that finally enters the body 10 through the heat dissipation slot 11 is relatively clean, thereby improving the dustproof and waterproof effect of the body 10 and making the use effect of the body 10 better.

[0046] Reference Figure 2 and Figure 4 Two rotating shafts are provided on the connecting rod 42, each of which is fitted with a fixed plate 70. The fixed plate 70 can rotate about the rotating shaft. A torsion spring 80 is fitted on the rotating shaft. One end of the torsion spring 80 is fixed to the connecting rod 42, and the other end is fixed to the fixed plate 70. The torsion spring 80 is used to drive the two fixed plates 70 to rotate toward each other. The support plate 61 is located between the two fixed plates 70. The torsion spring 80 is used to drive the two fixed plates 70 toward each other. A fixing block 71 is fixed to the side of the two fixed plates 70 where they are close to each other. The side wall of the support plate 61 is provided with a mounting hole 614 for inserting the fixing block 71. The fixing plate 70 can press the sponge cover 62 against the side wall of the support plate 61.

[0047] When installing, first wrap the sponge cover 62 around the support plate 61, and then place the support plate 61 between the two fixing plates 70. Under the action of the torsion spring 80, the fixing plate 70 rotates toward the direction of the support plate 61 until the fixing plate 70 abuts against the sponge cover 62, and the fixing block 71 is inserted into the mounting hole 614. The two fixing plates 70 both apply a clamping force to the support plate 61, thereby increasing the stability of the fixing block 71 inserted in the mounting hole 614, and the side wall of the fixing block 71 abuts against the inner wall of the mounting hole 614, so that the support plate 61 will not move at will, thereby achieving the fixation of the support plate 61 on the connecting rod 42. At the same time, the sponge cover 62 is clamped between the fixing plate 70 and the support plate 61, achieving the fixed installation of the sponge cover 62 on the support plate 61.

[0048] The implementation principle of an environmental noise monitoring device according to an embodiment of the present application is as follows: when in use, the fan 110 is started to suck the gas outside the installation box 20 into the installation box 20, so that the gas enters from the bottom end of the air inlet pipe 30 and is discharged from the top of the air inlet pipe 30 along the air inlet pipe 30. During this process, the gas needs to pass through the sponge board 60. The sponge board 60 absorbs water vapor in the gas and restricts the passage of fine dust, so that the gas entering the installation box 20 is relatively clean. Finally, the gas enters the body 10 through the heat dissipation groove 11, and the original gas in the body 10 is discharged through the heat dissipation groove 11 on the other side of the body 10, thereby realizing heat exchange of the body 10. At the same time, relatively clean gas enters the body 10, thereby improving the dustproof and waterproof effect of the body 10, and making the use effect of the body 10 good.

[0049] When the sponge plate 60 covering the top of the air inlet pipe 30 absorbs too much moisture and dust, the drive assembly 40 drives the two sponge plates 60 to rotate up and down, so that the clean sponge plate 60 originally located above the fan 110 now abuts against the top of the air inlet pipe 30, thereby allowing the moisture and dust in the gas to be adsorbed again, so that the relatively clean gas can be used to exchange heat with the body 10. The provision of two sponge plates 60 ensures that even if one of the sponge plates 60 loses its good adsorption effect, relatively clean gas can still be continuously introduced into the body 10 for heat exchange, thereby extending the time for cleaning and replacing the sponge plates 60 and improving work efficiency.

[0050] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An environmental noise monitoring device, characterized in that: The invention comprises a machine body (10), a heat dissipation groove (11) is formed through the side wall of the machine body (10), a mounting box (20) connected to the heat dissipation groove (11) is fixed on the outer side wall of the machine body (10), the bottom of the mounting box (20) is connected to an air intake pipe (30), the top end of the air intake pipe (30) is passed through the mounting box (20), a fan (110) is installed in the mounting box (20) through a mounting plate (90), the fan (110) is located between the heat dissipation groove (11) and the air intake pipe (30), two sponge plates (60) parallel to each other are arranged in the mounting box (20), the sponge plates (60) can completely cover the top opening of the air intake pipe (30), and a driving assembly (40) is arranged in the mounting box (20), the driving assembly (40) is connected to the two sponge plates (60), and is used to drive the position conversion of the two sponge plates (60).

2. The environmental noise monitoring device according to claim 1, characterized in that: The driving assembly (40) comprises a driving sleeve (41) and a connecting rod (42); the driving sleeve (41) is horizontally arranged on one side of the installation box (20); the driving sleeve (41) can be arranged on the installation box (20) with the central axis of the driving sleeve (41) as an axis; the middle part of the connecting rod (42) is fixed on the driving rod (50), and the connecting rod (42) is perpendicular to the driving sleeve (41); and the two sponge plates (60) are respectively arranged at both ends of the connecting rod (42).

3. The environmental noise monitoring device according to claim 2, characterized in that: A driving rod (50) is coaxially inserted in the driving sleeve (41), a slider (51) is fixed on the side wall of the driving rod (50), a sliding groove (411) is opened on the inner wall of the driving sleeve (41) along the axial direction of the driving sleeve (41), the slider (51) is inserted in the sliding groove (411) and can move in the sliding groove (411), and a part of the driving rod (50) away from the connecting rod (42) extends out of the installation box (20) and is fixed with a handle (52).

4. The environmental noise monitoring device according to claim 3, characterized in that: Two fixing grooves (21) are provided on the outer side wall of the installation box (20), and the two fixing grooves (21) are arranged symmetrically with the central axis of the driving rod (50) as the axis, and the handle (52) can be inserted into the fixing groove (21).

5. The environmental noise monitoring device according to claim 4, characterized in that: A magnet (22) is fixed on the inner wall of the fixing groove (21), and an iron sheet (521) is fixed on the side wall of the handle (52), and the iron sheet (521) can be attracted to the magnet (22).

6. The environmental noise monitoring device according to claim 2, characterized in that: The sponge plate (60) comprises a support plate (61) and a sponge cover (62); the support plate (61) is connected to the connecting rod (42); a cavity (613) is provided in the support plate (61); a plurality of air inlet holes (611) are provided through the side wall of the support plate (61) away from the fan (110); a plurality of filter holes (612) are provided through the side wall of the support plate (61) close to the fan (110); the air inlet holes (611) and the filter holes (612) are connected; and the sponge cover (62) is sleeved on the support plate (61).

7. The environmental noise monitoring device according to claim 6, characterized in that: The inner diameter of the air inlet hole (611) is greater than the inner diameter of the filter hole (612).

8. The environmental noise monitoring device according to claim 6, characterized in that: The connecting rod (42) is provided with two opposite fixing plates (70), and the fixing plates (70) are hinged on the connecting rod (42) through a torsion spring (80). The support plate (61) is located between the two fixing plates (70), and the torsion spring (80) is used to drive the two fixing plates (70) to approach each other. A fixing block (71) is fixed on one side where the two fixing plates (70) are close to each other. A mounting hole (614) for inserting the fixing block (71) is provided on the side wall of the support plate (61), and the fixing plate (70) can press the sponge cover (62) against the side wall of the support plate (61).

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