An indoor noise measuring alarm device

Abstract

The utility model belongs to the technical field of noise monitoring, especially is an indoor noise measurement alarm equipment, including noise monitoring appearance, be provided with the sound collection cylinder in noise monitoring appearance top, the sponge cover is equipped outside the sound collection cylinder, the sponge cover below is provided with the temporary protective cover, the sponge cover top is provided with the bolster plate, the bolster plate top end is installed with the air -inducing bin, the air -inducing bin below is provided with the air -inducing bin, the air -inducing bin bottom rotatory is provided with the gas distribution bin, after a certain time to indoor noise monitoring, high pressure airflow can be conducted from the air jet head and sprayed by many components, and the air jet head rotates, so that the airflow acts on the surface of the sponge cover in all directions with rotation, thereby blowing off the dust attached to the surface of the sponge cover and in the pores, ensuring the permeability of the sponge cover, and when cleaning, the temporary protective cover will move to the outside of the sound collection cylinder simultaneously, continuously protecting it, avoiding dust invasion, and ensuring the subsequent noise measurement accuracy.

Description

Technical Field

[0001] This utility model belongs to the field of noise monitoring technology, specifically relating to an indoor noise measurement and alarm device. Background Technology

[0002] In industrial production environments, especially in large workshops, the continuous operation of various mechanical equipment generates significant noise. To protect the occupational health of employees and effectively assess noise pollution in order to take targeted noise reduction measures, it is necessary to conduct long-term and accurate measurements of indoor noise in the workshop. In order to achieve accurate sound pressure level measurements, the sound acquisition tube of the noise measurement equipment usually needs to be wrapped with a porous sponge sleeve to prevent airflow in the environment from directly impacting the sensor diaphragm. At the same time, it can also filter out larger suspended particles to a certain extent, protecting the core acoustic sensor from physical damage.

[0003] However, in workshops with specific processes such as casting, crushing, grinding, and wood processing, the air is filled with high concentrations of dust and particulate matter. When the equipment runs continuously in such a dusty environment, the fine dust in the air will gradually penetrate and adhere to the pores of the sponge sleeve on the outside of the sound acquisition tube. With the accumulation of time, the pores of the sponge sleeve will be blocked by a large amount of dust, which will reduce its permeability and thus change the propagation characteristics of sound waves when passing through the sponge sleeve, ultimately causing the readings of the noise measurement results to deviate. Utility Model Content

[0004] To address the above problems, the purpose of this utility model is to provide an indoor noise measurement and alarm device to solve the aforementioned issues.

[0005] To achieve the above objectives, an indoor noise measurement and alarm device includes a noise monitor. A sound acquisition tube is positioned above the noise monitor, and a sponge sleeve is fitted over the outside of the sound acquisition tube. A temporary protective cover is positioned below the sponge sleeve. A support plate is positioned above the sponge sleeve, and an air intake chamber is installed at the top of the support plate. An air guide chamber is positioned below the air intake chamber, and a rotatable air distribution chamber is positioned at the bottom of the air guide chamber. Four surrounding air guide pipes are installed on the outer wall of the air distribution chamber, and several air jets are installed on the outer wall of the surrounding air guide pipes.

[0006] Preferably, a connecting pipe is installed on the top of the noise monitor, and the sound collection tube is installed at the top of the connecting pipe.

[0007] Preferably, a clamping ring is installed on the outer bottom of the sponge sleeve, and the temporary protective cover is installed at the bottom end of the clamping ring.

[0008] Preferably, a mounting rod is installed on the outer wall of the support plate, and the mounting rod is installed on the top of the noise monitoring instrument.

[0009] Preferably, a fixing frame is installed on the outer wall of the support plate, and the bottom of the fixing frame is fixedly connected to the outer wall of the air guide chamber.

[0010] Preferably, an air supply pipe connects the air intake chamber and the air guide chamber.

[0011] Preferably, the bottom of the air guide chamber is provided with an opening, and the top of the air distribution chamber is provided with an air inlet ring groove, the position of which corresponds to the opening.

[0012] The utility model has the following beneficial effects: Through the cooperation of components such as the air intake chamber and the air distribution chamber, after a certain period of indoor noise monitoring, the high-pressure airflow can be transmitted through multiple components and ejected from the jet head. At the same time, the jet head rotates, causing the airflow to act on the surface of the sponge sleeve in all directions, thereby blowing away the dust attached to the surface of the sponge sleeve and inside the pores, ensuring the permeability of the sponge sleeve. During cleaning, the temporary protective cover will move to the outside of the sound acquisition tube to continuously protect it and prevent dust from entering, ensuring the accuracy of subsequent noise measurement. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram showing the movement state of the sponge sleeve in this utility model; Figure 3 This is a cross-sectional structural diagram of the draft chamber in this utility model; Figure 4 This is a cross-sectional structural diagram of the gas distribution chamber in this utility model; Figure 5 for Figure 4 Enlarged diagram of point A in the middle.

[0014] In the diagram: 1. Noise monitor; 11. Sound acquisition tube; 12. Connecting pipe; 2. Sponge sleeve; 21. Temporary protective cover; 22. Clamping ring; 3. Support plate; 31. Mounting rod; 32. Fixing frame; 4. Air intake chamber; 41. Air guide chamber; 411. Opening; 42. Air supply pipe; 5. Air distribution chamber; 51. Surrounding air guide pipe; 52. Jet nozzle; 53. Air inlet ring groove. Detailed Implementation

[0015] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0016] Example: Figure 1As shown in Figure 5: An indoor noise measurement and alarm device includes a noise monitor 1, a sound acquisition tube 11 above the noise monitor 1, a sponge sleeve 2 covering the outside of the sound acquisition tube 11, a temporary protective cover 21 below the sponge sleeve 2, a support plate 3 above the sponge sleeve 2, an air intake chamber 4 installed at the top of the support plate 3, a guide chamber 41 below the air intake chamber 4, a rotatable air distribution chamber 5 at the bottom of the guide chamber 41, four surrounding air pipes 51 installed on the outer wall of the air distribution chamber 5, and a number of air jets 52 installed on the outer wall of the surrounding air pipes 51.

[0017] The noise monitor 1 is used for indoor noise data acquisition, analysis, and over-limit alarm functions. A sound acquisition tube 11 is installed on top of the noise monitor 1 to capture ambient sound and convert the sound signal into a transmittable signal. A sponge sleeve 2 is fitted over the outside of the sound acquisition tube 11. The sponge sleeve 2 has a porous structure design, which not only prevents airflow from directly impacting the sensor diaphragm inside the sound acquisition tube 11, thus preventing measurement errors due to airflow interference, but also filters larger suspended particles in the air, reducing physical damage to the sensor. A temporary protective cover 21 is installed below the sponge sleeve 2. A support plate 3 is installed at the top, which supports other functional components of the equipment. A drive motor, compressor, and an air intake chamber 4 for guiding compressed airflow are mounted on the top of the support plate 3. Below the air intake chamber 4 is a guide chamber 41 for guiding airflow. A gas distribution chamber 5 is rotatably mounted at the bottom of the guide chamber 41 via bearings. The output end of the drive motor passes through the support plate 3 and the air intake chamber 4 and is fixedly connected to the top of the gas distribution chamber 5. After the drive motor starts, it drives the gas distribution chamber 5 to rotate at a stable speed. Four circumferential air guide pipes 51 are evenly installed on the outer wall of the gas distribution chamber 5 along the circumferential direction. The circumferential air guide pipes 51 and the gas distribution chamber 5... Internally connected, each surrounding air duct 51 has several jet heads 52 spaced apart on its outer wall. The jet heads 52 spray inwards. After noise detection for a certain period, the sponge sleeve 2 and the temporary protective cover 21 move vertically upwards. The temporary protective cover 21 is then placed over the outside of the sound acquisition tube 11 to provide temporary protection. The temporary protective cover 21 then moves to the inside of the surrounding air duct 51. At this time, the compressor guides the airflow into the air intake chamber 4, which in turn guides the airflow into the air guide chamber 41. The airflow entering the air guide chamber 41 is then introduced into the air distribution chamber 5. Inside the air duct 51, the high-pressure airflow is finally ejected through the jet head 52, thereby blowing away the dust adhering to the surface of the sponge sleeve 2. As the air distribution chamber 5 drives the air duct 51 and the jet head 52 to rotate continuously, the high-pressure airflow will clean the dust on the surface of the sponge sleeve 2 in all directions without the need for manual disassembly and cleaning, reducing manual maintenance costs. This prevents the dust adhering to the surface of the sponge sleeve 2 from causing deviations in subsequent test results. The temporary protective cover 21 can protect the sound acquisition tube 11 during the cleaning of the sponge sleeve 2, preventing dust from entering the sound acquisition tube 11 and affecting the measurement accuracy.

[0018] A connecting pipe 12 is installed on the top of the noise monitor 1, and a sound acquisition tube 11 is installed on the top of the connecting pipe 12. One end of the connecting pipe 12 is connected to the interface on the top of the noise monitor 1 through a threaded seal, and the other end is fixedly connected to the bottom interface of the sound acquisition tube 11. The setting of the connecting pipe 12 not only ensures a stable connection between the sound acquisition tube 11 and the noise monitor 1, ensuring that the sound acquisition tube 11 will not loosen or shift during the operation of the equipment, but also plays a certain role in shielding the signal transmitted by the sound acquisition tube 11, reducing the impact of external electromagnetic interference on signal transmission, and improving the accuracy of noise measurement data. At the same time, the length of the connecting pipe 12 can be customized according to actual usage needs, making it convenient to adjust the height of the sound acquisition tube 11 to adapt to the noise monitoring needs of different indoor environments.

[0019] A clamping ring 22 is installed on the outer bottom of the sponge sleeve 2, and a temporary protective cover 21 is installed at the bottom of the clamping ring 22. The clamping ring 22 is made of elastic metal material, and its inner wall fits tightly against the outer wall of the sponge sleeve 2. The tightness of the clamping ring 22 can be adjusted by bolts, which facilitates the installation, disassembly and replacement of the sponge sleeve 2. The temporary protective cover 21 is installed at the bottom of the clamping ring 22. The clamping ring 22 will synchronize the sponge sleeve 2 and the temporary protective cover 21. When the sponge sleeve 2 is moved in a later manner, the temporary protective cover 21 can be moved synchronously through the clamping ring 22 to ensure the coordination of the two movements. At the same time, the clamping ring 22 can fix the bottom of the sponge sleeve 2 to prevent the sponge sleeve 2 from shifting during equipment operation or cleaning, and ensure the protective effect of the sponge sleeve 2 on the sound acquisition tube 11.

[0020] Mounting rods 31 are installed on the outer wall of the support plate 3 and are mounted on the top of the noise monitor 1. There are two mounting rods 31, which are symmetrically distributed on both sides of the support plate 3. One end of the mounting rod 31 is fixed to the outer wall of the support plate 3 by welding, and the other end is connected to the mounting seat at the top of the noise monitor 1 by bolts. The mounting rods 31 can stably fix the support plate 3 above the noise monitor 1 and prevent the support plate 3 from tilting or shaking due to its own weight and the weight of the components above it.

[0021] A fixing frame 32 is installed on the outer wall of the support plate 3. The bottom of the fixing frame 32 is fixedly connected to the outer wall of the air guide chamber 41. The fixing frame 32 has an "L" shaped structure and is integrally formed with alloy material. One end of it is fixed to the outer wall of the support plate 3 by bolts, and the other end is welded to the outer wall of the air guide chamber 41. The fixing frame 32 can fix the air guide chamber 41, ensuring that the air guide chamber 41 remains stable during equipment operation, avoiding displacement of the air guide chamber 41 caused by vibration generated by the drive motor driving the air distribution chamber 5 to rotate, and ensuring stable transmission of airflow in the air guide chamber 41.

[0022] An air supply pipe 42 connects the air intake chamber 4 and the air guide chamber 41. The two ends of the air supply pipe 42 are respectively connected to the air outlet at the bottom of the air intake chamber 4 and the air inlet at the top of the air guide chamber 41 through threaded sealing to ensure that there is no leakage of airflow during transmission. The configuration of the air supply pipe 42 provides a stable airflow transmission channel between the air intake chamber 4 and the air guide chamber 41, so that the high-pressure airflow can be transmitted from the air intake chamber 4 to the air guide chamber 41, ensuring the pressure and stability of the airflow ejected by the subsequent jet head 52.

[0023] The air guide chamber 41 has an opening 411 at its bottom, and the air distribution chamber 5 has an air inlet ring groove 53 at its top, with the position of the air inlet ring groove 53 corresponding to the opening 411. A sealing gasket is installed inside the air inlet ring groove 53 to ensure the sealing at the connection between the opening 411 and the air inlet ring groove 53, preventing air leakage and allowing the high-pressure airflow in the air guide chamber 41 to stably enter the air inlet ring groove 53 through the opening 411, then flow into the air distribution chamber 5, and finally be ejected from the jet head 52 through the surrounding air guide pipe 51. During noise detection, the sponge sleeve 2 is located outside the sound acquisition tube 11, and the air jet head 52 does not emit airflow to ensure that the noise measurement is not interfered with by airflow. After a certain period of detection, the electric push rod installed on the outside of the connecting pipe 12 drives the temporary protective cover 21, the clamping ring 22 and the sponge sleeve 2 to move upward, so that the sponge sleeve 2 reaches the inside of the surrounding air guide tube 51. The temporary protective cover 21 covers the sound acquisition tube 11. At this time, the air jet head 52 emits airflow to clean the dust from the sponge sleeve 2, and the temporary protective cover 21 prevents dust from entering the sound acquisition tube 11, so that cleaning and protection are carried out simultaneously.

[0024] The working principle of this utility model is as follows: During the use of the indoor noise measurement alarm device, the device is first placed in the target area to be monitored indoors, ensuring it is stable and free from obstructions affecting sound acquisition. At this time, the sponge sleeve 2 is placed over the outside of the sound acquisition tube 11. The noise monitoring instrument 1 is activated, and the sound acquisition tube 11 captures noise signals from the indoor environment through the sponge sleeve 2, transmitting the signals to the noise monitoring instrument 1. The noise monitoring instrument 1 analyzes and processes the received signals, displaying the current noise level in real time. If the noise level exceeds the preset alarm threshold, the device will automatically trigger an alarm to alert relevant personnel. After the device has been running continuously for a certain period, dust will accumulate on the surface and in the pores of the sponge sleeve 2. At this time, the electric push rod installed on the outside of the connecting pipe 12 is activated, driving the clamping ring 22, the temporary protective cover 21, and the sponge sleeve 2 to move upwards synchronously until the sponge sleeve 2 is completely moved to the corresponding position inside the air duct 51. The temporary protective cover 21 then covers the outside of the sound acquisition tube 11. Subsequently, the support plate 3... The compressor at the top starts, inputting high-pressure airflow into the air intake chamber 4. The high-pressure airflow enters the air guide chamber 41 through the air supply pipe 42, and then enters the air distribution chamber 5 through the open port 411 at the bottom of the air guide chamber 41 and the air inlet ring groove 53 at the top of the air distribution chamber 5. The air distribution chamber 5 evenly distributes the airflow to the four surrounding air guide pipes 51, and finally sprays it out from the jet nozzle 52. At the same time, the drive motor on the support plate 3 starts, driving the air distribution chamber 5, the surrounding air guide pipes 51 and the jet nozzle 52 to rotate, so that the airflow acts on the surface and pores of the sponge sleeve 2 from all directions, blowing away the attached dust. During this process, the temporary protective cover 21 protects the sound collection tube 11 to prevent dust from entering. After the sponge sleeve 2 is cleaned, the compressor and drive motor are turned off, and the electric push rod drives the clamping ring 22, the temporary protective cover 21 and the sponge sleeve 2 to reset downward. The sponge sleeve 2 is re-attached to the outside of the sound collection tube 11, the temporary protective cover 21 returns to its initial position, and the equipment resumes the noise monitoring state. This cycle is repeated to achieve continuous indoor noise measurement and automatic cleaning and maintenance of the equipment.

[0025] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of the present invention, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. An indoor noise measurement and alarm device, comprising a noise monitor (1), characterized in that: The noise monitoring instrument (1) is equipped with a sound collection tube (11) above it. A sponge sleeve (2) is fitted on the outside of the sound collection tube (11). A temporary protective cover (21) is installed below the sponge sleeve (2). A support plate (3) is installed above the sponge sleeve (2). An air intake chamber (4) is installed at the top of the support plate (3). An air guide chamber (41) is installed below the air intake chamber (4). An air distribution chamber (5) is rotatably installed at the bottom of the air guide chamber (41). Four surrounding air guide pipes (51) are installed on the outer wall of the air distribution chamber (5). Several jet nozzles (52) are installed on the outer wall of the surrounding air guide pipes (51).

2. The indoor noise measurement and alarm device according to claim 1, characterized in that: The noise monitor (1) is equipped with a connecting pipe (12) on top, and the sound collection tube (11) is installed at the top of the connecting pipe (12).

3. The indoor noise measurement and alarm device according to claim 1, characterized in that: A clamping ring (22) is installed on the outer bottom of the sponge sleeve (2), and the temporary protective cover (21) is installed at the bottom end of the clamping ring (22).

4. The indoor noise measurement and alarm device according to claim 1, characterized in that: An installation rod (31) is installed on the outer wall of the support plate (3), and the installation rod (31) is installed on the top of the noise monitoring instrument (1).

5. The indoor noise measurement and alarm device according to claim 1, characterized in that: The outer wall of the support plate (3) is equipped with a fixing frame (32), and the bottom of the fixing frame (32) is fixedly connected to the outer wall of the air guide chamber (41).

6. The indoor noise measurement and alarm device according to claim 1, characterized in that: An air supply pipe (42) connects the air intake chamber (4) and the air guide chamber (41).

7. An indoor noise measurement and alarm device according to claim 1, characterized in that: The air guide chamber (41) has an opening (411) at the bottom, and the air distribution chamber (5) has an air inlet ring groove (53) at the top. The position of the air inlet ring groove (53) corresponds to the opening (411).

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