An apparatus for removing particulate matter from a gas

Abstract

The present invention relates to a device for removing particulate matter from gas. A water tray is arranged inside a housing, and a water dripping plate is arranged above the water tray. The water dripping plate divides the space above the water tray into a first interval and a second interval that communicate with each other at the lower end. At least two water baffle plates are arranged in the up-and-down direction and are alternately connected to opposite first side walls and second side walls in the second interval and incline downward. A mounting plate is arranged below the water baffle plates. The mounting plate is provided with Venturi nozzles, and spiral multi-layer atomizing nozzles extend into the Venturi nozzles. A water sealing groove is connected to the mounting plate and divides the second interval into two parts communicated by the Venturi nozzles. The gas with particulate matter enters from a gas inlet, passes through the Venturi nozzles, and finally purifies the gas. The gas with particulate matter can be from different sources, such as paint particles, dust particles, etc. When the wind speed is adjusted to 10-15 m / s and the water volume is 350-500 m / s, the treatment rate of particulate matter can reach 95%-99%, and the particulate matter in the air can be effectively intercepted.

Description

Technical Field

[0001] The invention relates to the technical field of paint spraying rooms, and in particular to a device for removing particles in gas. Background Art

[0002] During the product processing, particles are often generated and dispersed in the air. If not handled, it will cause harm to the workers and pollute the surrounding environment. At present, the industry mostly uses exhaust and spraying to purify the gas containing more particles, but this method has poor air purification efficiency. There are still more particles left in the purified air, which is still harmful to the human body and the environment. Summary of the invention

[0003] In view of the deficiencies of the prior art, an object of the present invention is to provide a device for removing particulate matter in gas, which can effectively intercept particulate matter in gas and has high gas purification efficiency.

[0004] To achieve the purpose of the present invention, the present invention provides a device for removing particulate matter in gas, which includes a shell, a water tray, a water dripping plate, a Venturi nozzle, a spiral multi-layer atomizing nozzle, a water baffle, a mounting plate and a water sealing groove, the water tray is arranged in the shell, the water dripping plate is arranged above the water tray, the upper end of the water dripping plate is connected to a water outlet mechanism, the water dripping plate divides the space in the shell above the water tray into a first section and a second section connected at the lower end, the first section is provided with a gas inlet, and the upper end of the second section is provided with a gas outlet; the number of the water baffles is at least two, the at least two water baffles are arranged in the up and down direction and are alternately connected to the first side wall and the second side wall opposite to each other in the second section, and the water baffles connected on the first side wall are connected to the first side wall. The water plate is inclined downward in the direction toward the second side wall, and the water baffle plate connected to the second side wall is inclined downward in the direction toward the first side wall; the mounting plate is arranged below the water baffle plate, and a Venturi nozzle is penetrated through the mounting plate, the diameter of the Venturi nozzle decreases along the gas flow direction, the spiral multi-layer atomizing nozzle extends into the Venturi nozzle and the spray direction is opposite to the gas flow direction; the mounting plate is inclined, and the water sealing groove includes an open part and a closed part, the open part leads to the lower end of the mounting plate, the upper end of the closed part is closed, the lower end of the closed part is provided with a connecting port connected to the open part, and the closed part is provided with an opening leading to the water pan at a position higher than the connecting port; the mounting plate and the sealed water tank separate the second zone into two parts connected by the Venturi nozzle.

[0005] A further technical solution is that the number of Venturi air nozzles is at least one, and when the number of Venturi air nozzles is at least two, at least two Venturi air nozzles are distributed on the mounting plate in a direction perpendicular to the inclination direction of the mounting plate; the spiral multi-layer atomizing nozzles are the same in number as the Venturi air nozzles and are matched one-to-one.

[0006] A further technical solution is that the water outlet mechanism includes a water outlet pipe and an overflow tank. The number of water outlet pipes is at least one, and the water outlet pipe extends into the overflow tank. The overflow tank is connected to the upper end of the water flowing plate. When the number of water outlet pipes is at least two, the water outlet pipes are evenly distributed in the overflow tank.

[0007] A further technical solution is that the device further includes a water pipeline. A water return port is provided at the lower end of the water tray. The water pipeline is connected to the water return port, the water outlet pipe, and the spiral multi-layer atomizing nozzle. The water tray is used to hold water or solution.

[0008] A further technical solution is that the water pipeline includes a main pipeline, a first branch pipeline, and a second branch pipeline. After the water return port extends to the position height corresponding to the water outlet pipe through the main pipeline, it is connected to the water outlet pipe through the first branch pipeline and connected to the spiral multi-layer atomizing nozzle through the second branch pipeline.

[0009] A further technical solution is that the device further includes a buffer chamber. The buffer chamber is arranged at the gas outlet, and the ventilation cross-sectional area of the buffer chamber is larger than the ventilation cross-sectional area of the second interval.

[0010] A further technical solution is that a maintenance door is provided on the side surface of the buffer chamber and / or the side surface of the second interval.

[0011] A further technical solution is that the device further includes at least one other atomizing nozzle, and the other atomizing nozzle is arranged between the mounting plate and the water baffle; the projection of the other atomizing nozzle on the mounting plate is staggered from the spiral multi-layer atomizing nozzle.

[0012] A further technical solution is that the device further includes a water pressure gauge and a water pressure control mechanism that are directly or indirectly connected to the spiral multi-layer atomizing nozzle; the spiral multi-layer atomizing nozzle is detachable or adjustable in spray mode; the length of the water baffle is adjustable.

[0013] A further technical solution is that the water baffle includes a seat plate and a telescopic plate. The seat plate is connected to the corresponding first side wall and second side wall, and the telescopic plate can telescope relative to the seat plate to adjust the length of the water baffle.

[0014] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0015] The device for removing particulate matter from gas of the present invention can effectively treat particulate matter in gas. Specifically, gas containing more particulate matter enters the device from the gas inlet of the first interval, and the water wall formed on the water flow board helps to flush and remove the particulate matter sprayed toward the water flow board, and a water curtain is formed at the lower end of the water flow board to preliminarily purify the paint exhaust gas. Then the paint exhaust gas is mixed and adhered evenly by the water mist sprayed by the Venturi nozzle and the spiral multi-layer atomizing nozzle. After the water mist and particulate matter adhere, they are blocked by multiple water baffles during the rising process. The condensed water drips from under the multiple water baffles and converges to the water sealing groove through the upper surface of the water baffle below. The water sealing groove collects the water into the water pan again, thereby completing the air purification. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the first embodiment of the device of the present invention at a first viewing angle.

[0017] Figure 2 It is a schematic structural diagram of the first embodiment of the device of the present invention at a second viewing angle.

[0018] Figure 3 It is a schematic structural diagram of the first embodiment of the device of the present invention at a third viewing angle.

[0019] Figure 4 It is a schematic structural diagram of the second embodiment of the device of the present invention at a first viewing angle.

[0020] Figure 5 It is a schematic structural diagram of the second embodiment of the device of the present invention at a second viewing angle.

[0021] Figure 6 It is a schematic structural diagram of the water retaining plate in the second embodiment of the device of the present invention.

[0022] Figure 7 It is a schematic structural diagram of a cross section of a water retaining plate in the second embodiment of the device of the present invention.

[0023] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation modes. DETAILED DESCRIPTION

[0024] First embodiment

[0025] like Figures 1 to 3 As shown, the first embodiment provides a device for removing particulate matter from gas, which can be connected to the side of the product processing work area to purify the gas with a large number of particulate matter generated by product processing. For example, the waste gas generated during the painting process with a large number of paint particles dispersed in the air can be purified by this device. This device can also be used for other purposes, such as roadside air purification.

[0026] Specifically, the device includes a housing 10, a water tray 20, a water dripping plate 30, a Venturi air nozzle 40, a spiral multi-layer atomizing nozzle 50, a water baffle 60, a mounting plate 70, and a water sealing groove 80. The water tray 20 is disposed inside the housing 10, and a filtering device such as a filter screen may be provided in the water tray 20. The water dripping plate 30 is disposed above the water tray 20. The upper end of the water dripping plate 30 is connected to a water outlet mechanism. The water dripping plate 30 divides the space above the water tray 20 inside the housing into a first section and a second section that communicate with each other at the lower end. The first section is provided with a gas inlet 11, and the upper end of the second section is provided with a gas outlet 12. A suction device such as a suction fan may be provided at the gas inlet 11 or the gas outlet 12 to enable the gas to flow inside the device.

[0027] The number of the water baffles 60 is at least two. The at least two water baffles 60 are arranged in the vertical direction and are alternately connected to the opposite first side wall 13 and second side wall 14 of the second section. The water baffle 60 connected to the first side wall 13 is inclined downward in the direction towards the second side wall 14, and the water baffle 60 connected to the second side wall 14 is inclined downward in the direction towards the first side wall 13. The inclined setting has a better blocking effect and enables the water to fall along the plate. The mounting plate 70 is disposed below the water baffle 60. The Venturi air nozzle 40 penetrates through the mounting plate 70. The diameter of the Venturi air nozzle 40 decreases from bottom to top. The spiral multi-layer atomizing nozzle 50 extends into the Venturi air nozzle 40 and sprays downward and radially. The mounting plate 70 is inclined, and the inclination direction of the mounting plate 70 is opposite to the inclination direction of the lowermost water baffle 60. The water sealing groove 80 includes an open part 81 and a closed part 82. The lower end of the mounting plate 70 leads to the open part 81, and the upper end of the closed part 82 is closed. The mounting plate 70 and the sealing water tank 80 divide the second section into two parts communicated by the Venturi air nozzle 40. A communication port 83 communicating with the open part 81 is provided at the lower end of the closed part 82. An opening 84 leading to the water tray 20 is provided at a position higher than the communication port 83 in the closed part 82. The opening 84 may lead to the water tray 20 through a pipeline, or the water may flow to the water tray by overflowing from the opening 84. The opening 84 may be, for example, a gap between the plates assembled to form the closed part 82. For example, in this embodiment, the closed part 82 is disposed below the mounting plate 70, the open part 81 forms a groove with an upward opening, and the closed part 82 and the open part 81 are separated by a partition plate extending downward from the lower end of the mounting plate 70.

[0028] When the device of this embodiment is working, the air containing more particulate matter generated during product processing enters the first interval and enters the second interval through the lower end of the water dripping plate 30. At this time, a water wall is formed on the water dripping plate 30 to clean the particulate matter sprayed onto the water dripping plate 30, and a water curtain is formed at the lower end of the water dripping plate 30 to play a role in the primary purification of the particulate matter in the gas. Then the gas is mixed evenly with the water mist sprayed by the spiral multi-layer atomizing nozzle 50 through the Venturi air nozzle 40. After passing through the Venturi air nozzle 40, the speed of the gas increases and the pressure decreases, forming a negative pressure on both sides, which promotes the mixing and adhesion of the particulate matter in the waste gas with the water mist. After the water mist and the particulate matter adhere, they are blocked by multiple baffle plates 60 during the upward process. The condensed water drips from below the multiple baffle plates 60 and gradually slides down through the upper surface of the lower baffle plate 60 and converges into the water seal groove 80. The water seal groove 80 has the function of liquid seal and can re-introduce the water into the water tray 20, thus completing the air purification.

[0029] Preferably, the number of the Venturi air nozzles 40 is at least two, and the at least two Venturi air nozzles 40 are distributed on the mounting plate 70 in a direction perpendicular to the inclined direction of the mounting plate 70. The spiral multi-layer atomizing nozzle 50 has the same number as the Venturi air nozzle 40 and is matched with it one by one, improving the efficiency of waste gas treatment.

[0030] Preferably, the water outlet mechanism includes a water outlet pipe 31 and an overflow tank 32. The number of the water outlet pipes 31 is at least one. The water outlet pipe 31 extends into the overflow tank 32, and the overflow tank 32 is connected to the upper end of the water dripping plate 30, so that water can be evenly discharged onto the plate surface of the water dripping plate 30. When the number of the water outlet pipes 31 is at least two, the water outlet pipes 31 are evenly distributed in the overflow tank 32, so that water can be more evenly injected into the overflow tank 32.

[0031] Preferably, the device further includes a water pipeline. A water return port 21 is provided at the lower end of the water tray 20. The water pipeline connects the water return port 21, the water outlet pipe 31 and the spiral multi-layer atomizing nozzle 50, so that water can be recycled, which is beneficial to environmental protection.

[0032] Preferably, the water tray 20 is used to carry water or solution. Specifically, a suitable liquid can be selected according to the nature of the particles to be removed actually. For example, for alkaline particles, a slightly acidic solution can be selected to improve the adhesion between the liquid and the particles.

[0033] Preferably, the water pipeline includes a main pipeline, a first branch pipeline 22 and a second branch pipeline 23. After the water return port 21 extends through the main pipeline to the position corresponding to the water outlet pipe 31, it is connected to the water outlet pipe 31 through the first branch pipeline 22 and connected to the spiral multi-layer atomizing nozzle 50 through the second branch pipeline 23. Such a setting is beneficial to ensure the water spraying or atomizing pressure. A driving device such as a pump can be provided on the main pipeline. A water filtering device can also be connected to the main pipeline. The second branch pipeline 23 preferably avoids the water baffle 60 and can also be arranged to pass through the water baffle 60.

[0034] Preferably, the device further includes a buffer chamber 90. The buffer chamber 90 is arranged at the gas outlet 12. The ventilation cross-sectional area of the buffer chamber 90 is larger than that of the second interval. The increase in the ventilation cross-sectional area of the buffer chamber 90 reduces the flow rate of the gas with water mist and particulate matter, avoids the gas rushing out of the outlet rapidly, promotes the further adhesion and falling of the water mist and particulate matter, and improves the particulate matter treatment efficiency.

[0035] Preferably, a maintenance door 91 is provided on the side surface of the buffer chamber 90 and / or the side surface of the second interval, which is convenient for the inspection, repair and cleaning of the spiral multi-layer atomizing nozzle 50, the water baffle 60 and the mounting plate 70 in the buffer chamber 90 and the second interval.

[0036] Preferably, the device further includes a water pressure gauge 52. The water pressure gauge 52 is directly or indirectly connected to the spiral multi-layer atomizing nozzle 50 for detecting the water pressure of the spiral multi-layer atomizing nozzle 50.

[0037] Second Embodiment

[0038] As Figures 4 to 7 shown, the second embodiment also provides a device for removing particulate matter from gas. The structure of this device is basically the same as that of the device in the first embodiment, except that the device further includes at least one other atomizing nozzle 51. The other atomizing nozzle 51 is arranged between the mounting plate 70 and the water baffle 60. The projection of the other atomizing nozzle 51 on the mounting plate 70 is offset from the spiral multi-layer atomizing nozzle 50. The other atomizing nozzle 51 can also be capable of realizing spiral multi-layer atomization. The other atomizing nozzle 51 can be connected to the second branch pipeline 23 together with the spiral multi-layer atomizing nozzle 50. The spraying amount of the other atomizing nozzle 51 and the spiral multi-layer atomizing nozzle 50 under the same water pressure can be the same or different, and the size of the spray droplets can be the same or different, which can be specifically realized by designing different nozzles. Since a negative pressure is formed around the venturi nozzle 40 after the gas passes through the venturi nozzle 40, the other atomizing nozzle 51 is arranged around the spiral multi-layer atomizing nozzle 50 outside the venturi nozzle 40, and can utilize the negative pressure formed by the venturi nozzle 40 to flow the water mist ejected by the other atomizing nozzle 51 towards the gas, further improving the adhesion of the water mist and particulate matter.

[0039] The device further includes a water pressure control mechanism directly or indirectly connected to the spiral multi-layer atomizing nozzle 50. The water pressure control mechanism can be, for example, a regulating valve, etc., for controlling the spraying water pressure of the spiral multi-layer atomizing nozzle 50. The spiral multi-layer atomizing nozzle 50 is detachable. For example, the spiral multi-layer atomizing nozzle 50 with different nozzles can be replaced, or the spiral multi-layer atomizing nozzle 50 can adjust the spraying mode, so as to adjust the spraying amount, the size of the mist droplets, etc. The length of the water baffle 60 is adjustable. By adjusting the length of the water baffle 60, the passing distance of the gas mixed with water mist in the second interval is adjusted. For example, the water baffle 60 includes a base plate 61 and a telescopic plate 62. The base plate 61 is connected to the corresponding first side wall 13 and the second side wall 14. The telescopic plate 62 can telescopically move relative to the base plate 61 to adjust the length of the water baffle 60 extending towards the opposite side wall. Specifically, the base plate 61 can be assembled by multiple plates. A chute 63 can be provided inside the base plate 61. Rubber clamping members 64 can be provided on the inner walls on both sides of the chute 63. The telescopic plate 62 can be connected with a slider 65. The slider 65 is located between the rubber clamping members 64. The telescopic plate 62 can be pushed or pulled inwards or outwards with a certain force, and can be kept immobile when no force is applied. Through the above settings, the device can select appropriate spraying and flowing modes according to the properties of the particulate matter. For example, when the particle size is small, the size of the mist droplets can be reduced, the length of the water baffle 60 can be increased, etc. When there are more particles, the water pressure can be increased, the spraying amount can be increased, etc.

[0040] When the device of the present invention is applied, the gas with particulate matter can be from different sources, such as paint particles, dust particles, etc. When the wind speed is adjusted to 10 - 15 m / s and the water volume is 350 - 500 m / s, the treatment rate of the particulate matter can reach 95% - 99%, and the particulate matter in the air can be effectively intercepted.

[0041] Finally, it should be emphasized that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An apparatus for removing particulate matter from a gas, characterized in that It includes a housing, a water tray, a water dripping plate, a Venturi air nozzle, a spiral multi-layer atomizing nozzle, a water baffle, a mounting plate and a water seal groove. The water tray is arranged inside the housing. The water dripping plate is arranged above the water tray. The upper end of the water dripping plate is connected with a water outlet mechanism. The water dripping plate divides the space above the water tray inside the housing into a first interval and a second interval which are communicated at the lower end. The first interval is provided with a gas inlet, and the upper end of the second interval is provided with a gas outlet. Air enters the first interval and enters the second interval through the lower end of the water dripping plate. The number of the water baffles is one or more. The one or more water baffles are arranged in the up-down direction and are alternately connected to the opposite first side wall and second side wall in the second interval. The water baffle connected to the first side wall is inclined downward in the direction towards the second side wall, and the water baffle connected to the second side wall is inclined downward in the direction towards the first side wall. The mounting plate is arranged below the water baffle. The mounting plate is provided with the Venturi air nozzle penetrating through it. The diameter of the Venturi air nozzle decreases from bottom to top. The spiral multi-layer atomizing nozzle extends into the Venturi air nozzle and the spraying direction is opposite to the gas flow direction. The mounting plate is inclined, and the inclination direction of the mounting plate is opposite to the inclination direction of the lowermost water baffle. The water seal groove includes an open part and a closed part. The lower end of the mounting plate leads to the open part. The upper end of the closed part is closed. The lower end of the closed part is provided with a communication port communicating with the open part. The closed part is provided with an opening leading to the water tray above the communication port. The mounting plate and the water seal groove divide the second interval into two parts communicated by the Venturi air nozzle.

2. The device for removing particulate matter in gas according to claim 1, wherein: The number of the Venturi air nozzles is at least one. The at least one Venturi air nozzles are distributed on the mounting plate in a direction perpendicular to the inclination direction of the mounting plate. The number of the spiral multi-layer atomizing nozzles is the same as that of the Venturi air nozzles and they are matched one by one.

3. The device for removing particulate matter in gas according to claim 1 or 2, wherein: The water outlet mechanism includes a water outlet pipe and an overflow tank. The number of the water outlet pipes is at least one. The water outlet pipe extends into the overflow tank. The overflow tank is connected to the upper end of the water dripping plate. When the number of the water outlet pipes is one or more, the water outlet pipes are evenly distributed in the overflow tank.

4. The device for removing particulate matter in gas according to claim 3, wherein: The device further includes a water pipeline. The lower end of the water tray is provided with a water return port. The water pipeline connects the water return port, the water outlet pipe and the spiral multi-layer atomizing nozzle. The water tray is used for carrying water or solution.

5. The device for removing particulate matter in gas according to claim 4, wherein: The water pipeline includes a main pipeline, a first branch pipeline, and a second branch pipeline. After the water return port extends through the main pipeline to a position corresponding to the height of the water outlet pipe, it is connected to the water outlet pipe through the first branch pipeline and connected to the spiral multi-layer atomizing nozzle through the second branch pipeline.

6. The device for removing particulate matter from gas according to claim 1 or 2, characterized in that: The device further includes a buffer chamber, which is arranged at the gas outlet, and the ventilation cross-sectional area of the buffer chamber is larger than that of the second interval.

7. The device for removing particulate matter from gas according to claim 6, characterized in that: An inspection door is provided on the side surface of the buffer chamber and / or the side surface of the second interval.

8. The device for removing particulate matter from gas according to claim 1 or 2, characterized in that: The device further includes one or more other atomizing nozzles, which are arranged between the mounting plate and the water baffle; The projection of the other atomizing nozzle on the mounting plate is staggered from the spiral multi-layer atomizing nozzle.

9. The device for removing particulate matter from gas according to claim 1 or 2, characterized in that: The device further includes a water pressure gauge and a water pressure control mechanism that are directly or indirectly connected to the spiral multi-layer atomizing nozzle; The spiral multi-layer atomizing nozzle is detachable or adjustable in the spraying mode; The length of the water baffle is adjustable.

10. The device for removing particulate matter from gas according to claim 9, characterized in that: The water baffle includes a base plate and a telescopic plate. The base plate is connected to the corresponding first side wall and second side wall, and the telescopic plate can be telescoped relative to the base plate to adjust the length of the water baffle.

Images