A dust detection device for a factory building

Abstract

This invention provides a dust detection device for factory workshops, belonging to the field of dust detection technology. It includes an electric neutralization detection component and a volute housing. The electric neutralization detection component is installed inside the volute housing and includes an annular washer fixedly connected to the inner wall of the bottom of the volute housing. This invention utilizes small americium blocks to continuously release alpha particles to ionize the air, generating a large number of positive and negative ions. When electrostatically charged industrial dust enters the metal black cylinder, it adsorbs ions to complete electric neutralization, thoroughly dispersing the dust agglomerates. Simultaneously, the metal black cylinder forms a Faraday cage, creating a uniform and stable electric field inside. The electric field ions continuously capture and disperse the dust, ensuring that the dust is evenly distributed in the laser beam path. This solves the problem of distorted dust quantity in the beam path caused by electrostatic agglomeration and localized accumulation of dust in traditional equipment.

Description

Technical Field

[0001] This invention relates to the field of dust detection technology, and in particular to a dust detection device for use in factory buildings. Background Technology

[0002] In industrial plant operations such as mechanical grinding, metallurgical processing, building material processing, and chemical powder production, a large amount of suspended industrial dust is continuously generated during the production process. High concentrations of dust can not only cause wear and tear on workshop equipment and short circuits, but also pose a dust explosion hazard. Furthermore, long-term inhalation of dust can induce pneumoconiosis. Therefore, real-time and accurate quantitative detection of dust concentration in the plant is a core aspect of safe production management.

[0003] Traditional methods for detecting dust content in factory buildings typically employ laser scattering detection, which involves scattering a parallel laser beam through airborne dust particles and then capturing and detecting the scattered light using a photodiode. However, during the detection process, since most of the dust particles being tested are statically charged, they are prone to agglomeration, resulting in uneven distribution of dust in the air. This leads to distortion of the dust quantity along the optical path, and the scattered light signal from large agglomerates does not match the actual dust particle size distribution, causing inaccurate quantitative calculations.

[0004] Therefore, this application provides a dust detection device for factory buildings to meet the requirements. Summary of the Invention

[0005] The technical problem to be solved by this invention is to provide a dust detection device for factory workshops. By setting small americium blocks, alpha particles are continuously released to ionize the air and generate a large number of positive and negative ions. When electrostatically charged industrial dust enters the metal black cylinder, it will adsorb ions to complete the charge neutralization and completely disperse the dust agglomerates. At the same time, the metal black cylinder forms a Faraday cage, and a uniform and stable electric field is formed inside it. The electric field ions will continuously capture the dispersed dust, so that the dust is evenly distributed in the laser optical path, thereby solving the problem of the distortion of the number of dust particles in the optical path caused by electrostatic agglomeration and local accumulation of dust in traditional equipment.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A dust detection device for factory workshops includes an electrical neutralization detection component and a volute housing. The electrical neutralization detection component is installed inside the volute housing. The electrical neutralization detection component includes an annular washer, which is fixedly connected to the inner wall of the bottom of the volute housing. A rotating ring is rotatably connected to the inner wall of the annular washer, and a rotating mechanism is mounted on the rotating ring. An internal gear ring is fixedly mounted on the inner wall of the rotating ring. A gear is rotatably connected to the inner wall of the volute housing, and the gear meshes with the internal gear ring. A motor is fixedly mounted at the bottom of the volute housing, and the output end of the motor is fixedly connected to the gear.

[0007] Optionally, the rotating mechanism includes a metal black cylinder, the bottom of which is fixedly connected to the top of the rotating ring. Multiple sets of ash-carrying holes are evenly opened on both sides of the metal black cylinder, and the ash-carrying holes on both sides are symmetrically arranged. Outer baffles are fixedly installed on both sides of the outer walls of the ash-carrying holes, and inner baffles are fixedly installed on both sides of the inner walls of the ash-carrying holes.

[0008] Optionally, a collector ring is fixedly installed on the inner wall of the bottom of the metal black cylinder, a wire is snapped into the inner wall of the collector ring, a removable dust cover is snapped into the top of the collector ring, and a positive electrode plate is fixedly installed on the inner wall of the top of the metal black cylinder.

[0009] Optionally, an isolation base is installed on the inner wall of the bottom of the volute shell, and the bottom of the isolation base is fixedly connected to the volute shell by bolts. The inner wall of the isolation base is coated with a lead layer. Multiple sets of small americium blocks are fixedly installed on the inner wall of the isolation base. A dividing plate is fixedly installed on the top of the isolation base, and the top of the small americium blocks passes through the dividing plate. The bottom center of the metal black cylinder is hollow.

[0010] Optionally, a square black box is fixedly installed on the inner wall of the volute shell, and a laser emitter is fixedly installed on the inner wall of the square black box. A lens mounting stage is installed in each of the multiple dust discharge holes on the left side, and the two sides of the lens mounting stage are fixedly connected to the corresponding outer baffle and inner baffle sidewall. A reflector is fixedly installed on the end wall of the lens mounting stage, and the surface of the reflector is provided with a dustproof coating. The reflector is installed at different angles in different dust discharge holes. A side support platform is fixedly installed on the inner wall of the metal black cylinder, and a light signal receiver is fixedly installed on the side wall of the side support platform. The laser emitted by the laser emitter is reflected by the reflector and received by the light signal receiver.

[0011] Optionally, air guide pipes are fixedly installed on both ends of the volute housing, and air supply pipes are fixedly installed on both sides of the volute housing. The air supply pipes are connected to the corresponding air guide pipes. The air guide pipe at the left end is set as the air inlet end and is connected to an external pressure reducing throttle valve. The air guide pipe at the right end is set as the air outlet end. Exhaust grooves are opened on both sides of the inner wall of the volute housing, and the exhaust grooves are connected to the air supply pipe and ash discharge hole on that side.

[0012] Optionally, multiple sets of internal thread seats are uniformly fixedly installed on the outer wall of the volute housing, a top sealing cover is snapped onto the top of the volute housing, and multiple sets of bolts are inserted into the outer peripheral wall of the top sealing cover, with the bolts engaging with the corresponding internal thread seats.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects: In the above scheme, by setting up small americium blocks, alpha particles can be continuously released to ionize the air and generate a large number of positive and negative ions. When the statically charged industrial dust enters the metal black cylinder, it will adsorb ions to complete the charge neutralization and completely disperse the dust agglomerates. At the same time, the metal black cylinder forms a Faraday cage, and a uniform and stable electric field is formed inside it. The electric field ions will continuously capture the dispersed dust, so that the dust is evenly distributed in the laser beam path. This solves the problem of the distortion of the number of dust particles in the beam path caused by static agglomeration and local accumulation of dust in traditional equipment from the root, and restores the true dispersion state of dust in the factory air. By setting multiple sets of ash discharge holes distributed on the metal black cylinder, the drive motor drives the entire metal black cylinder to rotate. The number of ash discharge holes connected to the volute exhaust groove can be adjusted. Under high dust conditions in the factory, the number of connected ash discharge holes is increased to improve the intake sampling throughput. Conversely, under low dust conditions, the number of connected holes is reduced and the ventilation detection time is extended to ensure that trace dust can be stably captured, so as to take into account the detection accuracy under various dust concentrations in various factories. Attached Figure Description

[0014] The accompanying drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0015] Figure 1 This is a three-dimensional structural diagram of a dust detection device for use in factory buildings; Figure 2 A bottom-view perspective view of a dust detection device used in factory buildings; Figure 3 This is a schematic diagram of a snail-shaped shell. Figure 4 A schematic diagram of the assembly of the neutralization detection component inside the volute housing; Figure 5 This is a diagram showing the connection between the air guide pipe, air delivery pipe, and exhaust channel on the volute-shaped shell. Figure 6 This is a schematic diagram of the assembly of the metal black cylinder and the rotating ring; Figure 7 This is a schematic diagram of the assembly of the swivel ring and the volute housing; Figure 8 This is a schematic diagram of the assembly of the isolation base inside the volute housing; Figure 9 This is a schematic diagram of the structure of the charge neutralization detection component; Figure 10 This is a schematic diagram of the internal structure of the metal black cylinder; Figure 11 This is a schematic diagram showing the assembly of the wires and optical signal receiver inside the metal black tube; Figure 12 for Figure 11Enlarged view of point A in the middle.

[0016] Figure label: The components include: a neutralization detection assembly 100, a rotating mechanism 110, an annular washer 111, a rotating ring 112, an internal gear ring 113, a gear 114, a motor 115, a metal black cylinder 120, a dust discharge hole 121, an outer baffle 122, an inner baffle 123, a mirror mounting stage 124, a reflector 125, a square black box 130, a laser emitter 131, a side support platform 132, a light signal receiver 133, a collector ring 140, a wire 141, a removable dust cover 142, a positive electrode plate 143, an isolation base 150, a small americium block 151, a dividing plate 152, a volute shell 200, a gas guide pipe 210, a gas delivery pipe 220, an exhaust groove 230, an internal thread seat 240, a top sealing cover 250, and a bolt 251.

[0017] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0018] The dust detection device for factory buildings provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0019] like Figures 1 to 12As shown, an embodiment of the present invention provides a dust detection device for a factory, including an electric neutralization detection component 100 and a volute housing 200. The electric neutralization detection component 100 is installed inside the volute housing 200. The electric neutralization detection component 100 includes an annular washer 111, which is fixedly connected to the inner wall of the bottom of the volute housing 200. A rotating ring 112 is rotatably connected to the inner wall of the annular washer 111, and a rotating mechanism 110 is mounted on the rotating ring 112. An internal gear ring 113 is fixedly mounted on the inner wall of the rotating ring 112. A gear 114 is rotatably connected to the inner wall of the volute housing 200, and the gear 114 meshes with the internal gear ring 113. A motor is fixedly mounted at the bottom of the volute housing 200. 115, and the output end of motor 115 is fixedly connected to gear 114. In this invention, by visually observing the dust content in the factory workshop, motor 115 is driven to drive gear 114 to mesh with internal gear ring 113, thereby driving rotating ring 112 and metal black cylinder 120 to rotate, so that the dust discharge hole 121 on the left side of metal black cylinder 120 cooperates with the exhaust groove 230 on the left side. If the dust content in the workshop is high, the number of dust discharge holes 121 that cooperate with exhaust groove 230 can be increased to improve detection accuracy. Conversely, if the dust content in the workshop is low, the number of dust discharge holes 121 that cooperate with exhaust groove 230 can be reduced, and the ventilation time can be increased to improve detection accuracy.

[0020] As one implementation method in this embodiment, such as Figure 4 , Figure 7 and Figure 11 As shown, the rotating mechanism 110 includes a metal black cylinder 120. The bottom of the metal black cylinder 120 is fixedly connected to the top of the rotating ring 112. Multiple sets of dust-carrying holes 121 are evenly distributed on both sides of the metal black cylinder 120. These holes allow air and dust to pass through, effectively functioning as a Faraday cage, which makes the internal electric field more uniform and stable, and prevents alpha particles from escaping, thus improving safety. The dust-carrying holes 121 on both sides are symmetrically arranged, and the outer walls of both sides of the dust-carrying holes 121 are evenly distributed. An outer baffle 122 is fixedly installed, and inner baffles 123 are fixedly installed on both sides of the ash discharge hole 121. In this invention, the ash discharge holes 121 on both sides are arranged symmetrically, which makes the airflow entering the metal black cylinder 120 the same as the airflow exiting the metal black cylinder 120, so as to ensure the stable air pressure inside the metal black cylinder 120 and prevent the gas from accumulating inside the metal black cylinder 120 and affecting the detection results. In particular, the electric field inside the metal black cylinder 120 is not strong enough to capture dust and affect the airflow pressure's ability to capture dust.

[0021] In this embodiment, as Figure 10 and Figure 11As shown, a collector ring 140 is fixedly installed on the inner wall of the bottom of the metal black cylinder 120. A wire 141 is snapped into the inner wall of the collector ring 140, which serves as the negative electrode of the electric field. A removable dust cover 142 is snapped into the top of the collector ring 140. The removable dust cover 142 needs to be removed when using the device, but it needs to be covered at other times to prevent the diffusion of alpha particles. A positive electrode plate 143 is fixedly installed on the inner wall of the top of the metal black cylinder 120, which serves as the positive electrode of the electric field.

[0022] As one implementation method in this embodiment, such as Figures 6 to 8 As shown, an isolation base 150 is installed on the inner wall of the bottom of the volute shell 200, and the bottom of the isolation base 150 is fixedly connected to the volute shell 200 by bolts. The inner wall of the isolation base 150 is coated with a lead layer, which can effectively block the radiation of the americium-241 radioactive source. Multiple sets of small americium blocks 151 are fixedly installed on the inner wall of the isolation base 150. The small americium blocks 151 are embedded in the column on the isolation base 150. A dividing plate 152 is fixedly installed on the top of the isolation base 150, and the top of the small americium blocks 151 passes through the dividing plate 152. The dividing plate 152 can effectively prevent alpha particles from escaping to the surroundings. The bottom center of the metal black cylinder 120 is hollow. In this invention, the small americium blocks 151 can continuously release alpha particles. The alpha particles pass through the air at a speed close to 5% of the speed of light and continuously collide with air molecules, knocking out electrons and ionizing the air to form a large number of positively and negatively charged ions. Under the action of the electric field, these ions move towards the two poles respectively.

[0023] In this embodiment, as Figure 4 , Figures 9 to 12As shown, a square black box 130 is fixedly installed on the inner wall of the spiral shell 200. The square black box 130 can prevent external interference with the parallel laser emitted by the laser emitter 131. The laser emitter 131 is fixedly installed on the inner wall of the square black box 130. Each of the multiple dust discharge holes 121 on the left side is equipped with a mirror mounting platform 124. The two sides of the mirror mounting platform 124 are fixedly connected to the side walls of the corresponding outer baffle 122 and inner baffle 123. By changing the installation position of the mirror mounting platform 124 on the two baffles, the installation angle of the reflector 125 in the dust discharge hole 121 can be changed. The reflector 125 is fixedly installed on the end wall of the mirror mounting platform 124, and the surface of the reflector 125 is provided with a dustproof coating. The installation angle of the reflector 125 is different in different dust discharge holes 121. A side support platform 132 is fixedly installed on the inner wall of the metal black cylinder 120. A light signal receiver 133 (photodiode) is fixedly installed on the side wall of the side support platform 132, and the light is emitted by the laser emitter 131. The emitted laser light is reflected by the reflector 125 and received by the optical signal receiver 133 (receiving the scattered light from the dust in the optical path). When the metal black cylinder 120 rotates, the position of the optical signal receiver 133 changes, while the position of the laser emitter 131 remains unchanged. When the parallel laser emitted by the laser emitter 131 enters different dust discharge holes 121, the installation angle of the reflector 125 in the dust discharge hole 121 can be changed so that the reflected laser light (dust scattered light) can be received by the optical signal receiver 133. In this invention, the laser emitter 131 is turned on so that the parallel laser light, after being reflected by the reflector 125, continuously irradiates the flowing air inside the metal black cylinder 120. The dust particles in the air will scatter the light. Afterwards, the optical signal receiver 133 captures the scattered parallel laser light and converts it into a weak current. Combined with the gas volume output by the pressure reducing valve, the content of dust per unit in the factory can be calculated.

[0024] As one implementation method in this embodiment, such as Figures 1 to 5As shown, both end walls of the volute 200 are fixedly equipped with gas guide pipes 210, and both side walls of the volute 200 are fixedly equipped with gas delivery pipes 220, which are connected to the corresponding gas guide pipes 210. The left gas delivery pipe 220 is only connected to the left gas guide pipe 210, and the right gas delivery pipe 220 is only connected to the right gas guide pipe 210. The left gas guide pipe 210 is set as the inlet end and is externally connected to a pressure reducing throttle valve. The pressure reducing throttle valve consists of a pressure reducing valve and a needle throttle valve, which can control the output gas pressure and flow rate. Based on the output time of the pressure reducing throttle valve, the output gas volume of the pressure reducing throttle valve during that time can be calculated (output gas volume V = output flow rate Q * output time t). The right gas guide pipe 210 is set as the outlet end. Before testing, the gas inside the device can be extracted by closing the pressure reducing throttle valve and connecting a vacuum pump to the outlet end to prevent it from affecting the test results. The inner walls on both sides of the volute 200 are provided with exhaust grooves 230, and the exhaust grooves 230 are connected to the gas supply pipe 220 and the ash discharge hole 121 on the same side. Multiple sets of internal thread seats 240 are uniformly fixed on the outer wall of the volute 200. A top sealing cover 250 is snapped onto the top of the volute 200. Multiple sets of bolts 251 are inserted into the outer peripheral wall of the top sealing cover 250, and the bolts 251 mesh with the corresponding internal thread seats 240. In this invention, the device is transported to the factory building to be tested, and a vacuum pump is connected to the outlet end to extract the gas inside the device. The gas is then delivered to the pressure reducing throttle valve through an external gas pump, and the total volume of the delivered gas is recorded.

[0025] The working principle of the technical solution provided by this invention is as follows: The device is transported to the factory building to be tested. Gas is supplied to the pressure reducing valve through an external air pump. The volume of gas supplied to the device can be calculated by using the output flow rate and delivery time of the pressure reducing valve. The gas to be tested enters the metal black cylinder 120 through the front-end gas guide pipe 210, gas delivery pipe 220, exhaust groove 230 and ash discharge hole 121. At this time, by energizing the wire 141, an electric field can be formed between the wire 141 and the positive electrode plate 143. At the same time, the small americium block 151 in the isolation base 150 can continuously release alpha particles. The alpha particles pass through the air at a speed close to 5% of the speed of light and continuously collide with air molecules, knocking out electrons and ionizing the air to form a large number of positively and negatively charged ions. Under the action of the electric field, these ions move towards the two poles (wire 141 (negative pole) and positive electrode plate 143 (positive pole)) respectively, which can form a weak electric field. A stable ion current is generated, and an image monitoring system can be formed based on this ion current via an external receiver. When dusty gas enters the metal black cylinder 120, the dust particles in the gas adsorb ions and promote the recombination of positive and negative ions, causing the ion current to decrease. At this time, the dust particles in the gas can be evenly distributed within the metal black cylinder 120 (the ions in the electric field continuously capture the dust particles in the air, making the dust particles evenly distributed within the electric field), effectively preventing dust agglomeration. At the same time, by observing the ion current curve, the dust content in the electric field can be roughly determined. When the ion current curve stabilizes again, the laser emitter 131 is turned on, so that the parallel laser beam is reflected by the reflector 125 and continuously irradiates the flowing air inside the metal black cylinder 120. The dust particles in the air scatter the light, and then the optical signal receiver 133 captures the scattered parallel laser beam and converts it into a weak current. Combined with the gas volume output by the pressure reducing valve, the dust content per unit area in the factory can be calculated.

[0026] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0027] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A dust detection device for a factory plant, comprising a neutralization detection component (100) and a volute housing (200), wherein the neutralization detection component (100) is installed inside the volute housing (200), characterized in that, The neutralization detection assembly (100) includes an annular washer (111), which is fixedly connected to the inner wall of the bottom of the volute housing (200). A rotating ring (112) is rotatably connected to the inner wall of the annular washer (111). A rotating mechanism (110) is installed on the rotating ring (112). An internal gear ring (113) is fixedly installed on the inner wall of the rotating ring (112). A gear (114) is rotatably connected to the inner wall of the volute housing (200), and the gear (114) meshes with the internal gear ring (113). A motor (115) is fixedly installed at the bottom of the volute housing (200), and the output end of the motor (115) is fixedly connected to the gear (114).

2. The dust detection device for factory buildings according to claim 1, characterized in that, The rotating mechanism (110) includes a metal black cylinder (120), the bottom of which is fixedly connected to the top of the rotating ring (112). Multiple sets of ash-carrying holes (121) are evenly opened on both sides of the metal black cylinder (120), and the ash-carrying holes (121) on both sides are symmetrically arranged. An outer baffle (122) is fixedly installed on the outer walls on both sides of the ash-carrying holes (121), and an inner baffle (123) is fixedly installed on the inner walls on both sides of the ash-carrying holes (121).

3. A dust detection device for factory buildings according to claim 2, characterized in that, A collector ring (140) is fixedly installed on the inner wall of the bottom of the metal black cylinder (120). A wire (141) is snapped into the inner wall of the collector ring (140). A removable dust cover (142) is snapped into the top of the collector ring (140). A positive electrode plate (143) is fixedly installed on the inner wall of the top of the metal black cylinder (120).

4. A dust detection device for factory buildings according to claim 2, characterized in that, An isolation base (150) is installed on the inner wall of the bottom of the volute shell (200), and the bottom of the isolation base (150) is fixedly connected to the volute shell (200) by bolts. The inner wall of the isolation base (150) is coated with a lead layer. Multiple sets of small americium blocks (151) are fixedly installed on the inner wall of the isolation base (150). A dividing plate (152) is fixedly installed on the top of the isolation base (150), and the top of the small americium blocks (151) passes through the dividing plate (152). The bottom center of the metal black cylinder (120) is hollow.

5. A dust detection device for factory buildings according to claim 2, characterized in that, A square black box (130) is fixedly installed on the inner wall of the volute shell (200). A laser emitter (131) is fixedly installed on the inner wall of the square black box (130). A mirror mounting platform (124) is installed in each of the multiple dust discharge holes (121) on the left side. The mirror mounting platform (124) is fixedly connected to the side walls of the corresponding outer baffle (122) and inner baffle (123) on both sides. A reflector (125) is fixedly installed on the end wall of the mirror mounting platform (124). The surface of the reflector (125) is provided with a dustproof coating. The reflector (125) is installed at different angles in different dust discharge holes (121). A side support platform (132) is fixedly installed on the inner wall of the metal black cylinder (120). A light signal receiver (133) is fixedly installed on the side wall of the side support platform (132). The laser emitted by the laser emitter (131) is reflected by the reflector (125) and received by the light signal receiver (133).

6. A dust detection device for factory buildings according to claim 2, characterized in that, The volute housing (200) has air guide pipes (210) fixedly installed on both end walls. The volute housing (200) has gas supply pipes (220) fixedly installed on both side walls. The gas supply pipes (220) are connected to the corresponding air guide pipes (210). The air guide pipe (210) on the left end is set as the air inlet end and is connected to a pressure reducing valve. The air guide pipe (210) on the right end is set as the air outlet end. The volute housing (200) has exhaust grooves (230) on both inner walls. The exhaust grooves (230) are connected to the gas supply pipe (220) and the ash discharge hole (121) on that side.

7. A dust detection device for factory buildings according to claim 1, characterized in that, Multiple sets of internal thread seats (240) are uniformly fixedly installed on the outer wall of the volute housing (200). A top sealing cover (250) is snapped onto the top of the volute housing (200). Multiple sets of bolts (251) are inserted into the outer peripheral wall of the top sealing cover (250), and the bolts (251) mesh with the corresponding internal thread seats (240).

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