Exhaust flow guide structure of waste gas filtering and discharging machine and waste gas filtering and discharging machine

Abstract

The utility model provides an air draft flow guide structure of a waste gas filtering and discharging machine and the waste gas filtering and discharging machine, and belongs to the technical field of environmental protection devices. The air draft flow guide structure comprises a sailboard, a curtain board and a flow guide board. And the sailboard is obliquely arranged at the upper part in the shell of the waste gas filtering and discharging machine. The curtain plate is obliquely arranged on the lower portion in the shell and located below the sailboard. A gap between the inclined upper end of the curtain plate and the inclined lower end of the sailboard serves as a first air inlet. The drainage plate is arranged on the lower portion in the shell and located below the curtain plate. And a second air inlet is formed between the front end of the drainage plate and the inclined lower end of the curtain plate. The waste gas filtering and discharging machine comprises the air draft flow guide structure. According to the utility model, the drainage plate is additionally arranged below the curtain plate, and waste paint mist can enter a negative pressure suction area from the first air inlet and the second air inlet at different positions up and down along with airflow, so that the flow direction of gas in the waste gas filtering and discharging machine is improved, and the suction effect of the waste gas paint mist in the whole operation area is ensured as far as possible.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection devices, in particular to an exhaust air exhaust guide structure of an exhaust gas filter exhaust machine and the exhaust gas filter exhaust machine. Background Art

[0002] In the process of model making, spray painting is an indispensable step. However, the waste gas and paint mist generated by spray painting will pollute the working environment and cause health hazards to the human body. For this reason, relevant personnel have developed a water curtain discharge device to remove waste gas and paint mist through extraction and adsorption.

[0003] For example, the utility model designed, developed and authorized by the applicant in the early stage (name: "Desktop Small Exhaust Gas Filter and Emission Machine", announcement number: CN216856092U, announcement date: 20220701).

[0004] This desktop small exhaust gas filter exhaust machine, as attached Figure 1 and attached Figure 2 As shown in the figure, the inclination direction of the negative pressure cabin 3' is from the open front side wall of the shell 2' to the lower part of the rear side wall of the shell 2', and there is a certain gap between the inclination lower end of the negative pressure cabin 3' and the rear side wall of the shell 2'. After the negative pressure cabin 3' is installed, it can form a roughly closed fan-shaped negative pressure working area after being enclosed by the top cover and a part of the left rear plate and the right rear plate. The gap between the inclination lower end of the negative pressure cabin 3' and the rear side wall of the shell 2' serves as the main air intake channel of the fan-shaped negative pressure working area. The water curtain plate 4' is obliquely arranged in the shell 2' and is located below the negative pressure cabin 3'. An overflow groove 41' is provided outside the inclined upper end of the water curtain plate 4' along its length direction. The gap between the inclined upper end of the water curtain plate 4' and the inclined lower end of the negative pressure cabin 3' is the air inlet 42', and the gas outside the fan-shaped negative pressure working area enters the fan-shaped negative pressure working area through the air inlet 42'.

[0005] However, the air inlet (i.e., air inlet) of the desktop small-sized exhaust gas filter and discharge machine is located at the inclined lower end of the negative pressure cabin and roughly near the middle area of ​​the shell. The negative pressure suction effect near the air inlet is stronger, while the negative pressure suction effect is weaker at the position far from the air inlet, such as near the inclined lower end of the water curtain plate. Therefore, when spraying the model, it is necessary to be as close to the air inlet area as possible to ensure the suction effect of the exhaust paint mist, otherwise there will be a risk of exhaust paint mist escaping and polluting the environment. Utility Model Content

[0006] The utility model aims to provide an exhaust gas filter discharger exhaust air ...

[0007] The technical solution adopted by the utility model is:

[0008] An exhaust air extraction and flow guiding structure of an exhaust gas filtering and discharging machine, comprising:

[0009] A sailboard, wherein the sailboard is tiltedly arranged at the upper inner part of the shell of the exhaust gas filter discharger, and the tilting direction of the sailboard is tilted from the open front side of the shell to the lower part of the rear side wall; there is a gap between the tilted lower end of the sailboard and the rear side wall of the shell; the tilted upper end and left and right edges of the sailboard are respectively in contact and sealed with the top and left and right side walls of the shell, so that the area above the sailboard and surrounded by the shell forms a negative pressure suction area;

[0010] A curtain plate, the curtain plate is tiltedly arranged at the lower part of the shell body and is located below the sail plate, and a liquid medium flowing out of the liquid storage tank forms a liquid curtain on the upper surface of the curtain plate to capture the exhaust paint mist; the tilt direction of the curtain plate is from the rear side wall of the shell body to the lower front side of the opening; the tilted upper end of the curtain plate is located between the tilted lower end of the sail plate and the rear side wall of the shell body; the gap between the tilted upper end of the curtain plate and the tilted lower end of the sail plate serves as a first air inlet; the gas outside the negative pressure suction area can directly enter the negative pressure suction area through the first air inlet;

[0011] A guide plate, the guide plate is arranged at the lower inner part of the shell and is located below the curtain plate; the left and right edges of the guide plate and one end of the rear side wall adjacent to the shell are respectively in contact and sealed with the left and right side walls and the rear side wall of the shell, so that an auxiliary air flow channel is formed between the guide plate and the curtain plate; the auxiliary air flow channel is connected to the negative pressure suction area; a second air inlet is formed between the front end of the guide plate and the inclined lower end of the curtain plate; the gas outside the negative pressure suction area can first enter the auxiliary air flow channel through the second air inlet, and then enter the negative pressure suction area.

[0012] Furthermore, a plurality of air inlet holes are provided near the inclined lower end of the sailboard.

[0013] Furthermore, the air inlet hole is one or more of a circular hole, a polygonal hole, a waist-shaped hole, and a fan-shaped hole.

[0014] Furthermore, the inclined lower end of the sailboard is sawtooth-shaped.

[0015] Furthermore, the guide plate and the curtain plate are arranged in parallel.

[0016] Furthermore, a porous plate is provided at the inclined lower end of the curtain plate along its length direction; the porous plate is arranged at an obtuse angle with the curtain plate and faces the bottom direction of the shell.

[0017] Furthermore, an edge of one end of the porous plate away from the curtain plate is serrated.

[0018] Furthermore, the holes on the porous plate are one or more of circular holes, polygonal holes, waist-shaped holes, and fan-shaped holes.

[0019] Furthermore, it is characterized in that the guide plate can be replaced by a guide slope processed when the shell is formed.

[0020] Based on the same inventive concept, the utility model also provides an exhaust gas filter and discharge machine, including the exhaust and flow guiding structure of the aforementioned exhaust gas filter and discharge machine.

[0021] The beneficial effects of the utility model are:

[0022] The utility model designs an exhaust gas filter discharger exhaust air exhaust guide structure and an exhaust gas filter discharger, which are redesigned on the basis of the gas guide structure composed of the original negative pressure cabin plate and the water curtain plate, and a guide plate is added under the curtain plate to form an auxiliary air flow channel, and the waste paint mist can enter the negative pressure suction area from the first air inlet and the second air inlet at different upper and lower positions with the air flow, thereby improving the gas flow direction in the exhaust gas filter discharger and ensuring the exhaust gas paint mist suction effect in the entire operating area as much as possible. In addition, the above-mentioned exhaust guide structure also makes it unnecessary for the operator to deliberately perform the painting operation near the first air inlet area, and the convenience of operation is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of a desktop small-sized exhaust gas filtering and discharging machine in the prior art.

[0025] Figure 2 The present invention is a schematic cross-sectional structural diagram of a desktop small-sized exhaust gas filtering and discharging machine in the prior art.

[0026] Figure 3 This is a front view of the exhaust air guide structure of the exhaust gas filtering and discharging machine in this embodiment.

[0027] Figure 4 This is a three-dimensional schematic diagram of the exhaust air guide structure of the exhaust gas filtering and discharging machine in this embodiment.

[0028] Figure 5 for Figure 3 AA section view.

[0029] Wherein, the accompanying drawings are marked as follows:

[0030] 100 - sailboard, 110 - first air inlet, 120 - air inlet;

[0031] 200-housing;

[0032] 300-curtain plate, 310-baffle plate, 320-porous plate;

[0033] 400-liquid storage tank;

[0034] 500- guide plate, 510- second air inlet. DETAILED DESCRIPTION

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention.

[0037] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0038] This embodiment provides an exhaust gas filter exhaust machine exhaust air exhaust guide structure, as shown in the attached Figure 3 and attached Figure 4 As shown in the figure, it aims to improve the gas flow direction in the exhaust gas filter exhaust machine and ensure the exhaust gas paint mist suction effect in the entire working area as much as possible.

[0039] Specifically, the exhaust air filter discharger's air extraction and flow guiding structure includes a roughly rectangular sailboard 100. The sailboard 100 is tilted above the inner side of a hollow rectangular shell 200 with an open front side of the exhaust air filter discharger. The tilting direction of the sailboard 100 is from the upper open front side of the shell 200 to the lower middle part of the opposite rear side wall. The tilted upper end and left and right edges of the sailboard 100 are in contact and sealed with the top and left and right side walls of the shell 200 respectively. Under the suction action of the fan installed on the top of the shell 200, the area surrounded by the sailboard 100 and the top wall and left and right side walls of the shell 200 forms a negative pressure suction area. The air inlet channel opening of the negative pressure suction area is between the tilted lower end of the sailboard 100 and the rear side wall of the shell 200.

[0040] The exhaust air filtration and discharge machine also includes a curtain plate 300 and a liquid storage tank 400. The curtain plate 300 is roughly rectangular, and has baffles 310 at the left and right edges. The baffles 310 are tilted and arranged inside the housing 200 and below the sailboard 100. Figure 5As shown in . The inclination direction of the curtain plate 300 is from the rear side wall inside the shell 200 to the lower side of the open front side. The inclined upper end of the curtain plate 300 is located between the inclined lower end of the sailboard 100 and the rear side wall of the shell 200. At the same time, the baffles 310 at the left and right edges of the curtain plate 300 are in contact and sealed with the left and right side walls of the shell 200. As a result, a "V"-shaped structure is formed between the curtain plate 300 and the sailboard 100. At the same time, the first air inlet 110 is between the inclined upper end of the curtain plate 300 and the inclined lower end of the sailboard 100. The length of the liquid storage tank 400 is greater than the length of the inclined upper end of the curtain plate 300. The liquid storage tank 400 is arranged along the length direction of the inclined upper end of the curtain plate 300 and is connected to the curtain plate 300. And the liquid storage tank 400 is completely not in contact with or partially in contact with the rear side wall of the shell 200. The liquid storage tank 400 is partially in contact with the rear side wall of the shell 200, which means that the liquid storage tank 400 does not completely block the upper and lower areas in the shell. For example, the rear side wall of the liquid storage tank 400 close to the shell 200 is designed to be a structure with a middle depression. That is, the two sides of the liquid storage tank 400 are in contact and sealed with the rear side wall of the shell 200, and the middle area is also unobstructed up and down. A rectangular overflow port 332 is opened along the length direction of the liquid storage tank 400 at a position close to the upper surface of the curtain plate 300. When the liquid medium (such as water) used to capture the waste gas paint mist flows continuously from the rectangular overflow port on the liquid storage tank 400, a liquid curtain is formed on the upper surface of the curtain plate 300. During the model spray painting operation, part of the waste gas paint mist is captured by the liquid curtain, and the rest enters the negative pressure suction area under the guidance of the airflow. In this embodiment, a rectangular guide plate 500 is also provided below the curtain plate 300. The left and right edges of the guide plate 500 and one end of the rear side wall adjacent to the shell 200 are in contact and sealed with the left and right side walls and the rear side wall of the shell 200, respectively. Thus, an auxiliary airflow channel is formed between the curtain plate 300 and the guide plate 500, and the auxiliary airflow channel is connected to the negative pressure suction area, and the second air inlet 510 is formed between the front end of the guide plate 500 and the inclined lower end of the curtain plate 300. Since the airflow channel is located in the lower area inside the shell, when the model spray painting operation is performed in the working area in front of the curtain plate 300 (i.e., the inner area of ​​the "V"-shaped structure), part of the waste gas paint mist is captured by the liquid curtain, and the rest of the waste gas paint mist is sucked by the fan on the shell 200, and flows along the auxiliary airflow channel from the second air inlet 510 and then enters the negative pressure suction area, and finally is sucked out and discharged by the air inlet fan.

[0041] In this embodiment, the gas guide structure composed of the original negative pressure cabin plate and the water curtain plate is redesigned, and a guide plate is added under the curtain plate to form an auxiliary airflow channel. The waste paint mist can enter the negative pressure suction area from the first air inlet and the second air inlet at different positions above and below with the airflow, thereby improving the gas flow direction in the exhaust gas filter discharger and ensuring the suction effect of the exhaust gas paint mist in the entire operating area as much as possible. In addition, the above-mentioned exhaust guide structure also makes it unnecessary for the operator to deliberately perform the painting operation near the first air inlet area, which greatly improves the convenience of operation.

[0042] In this embodiment, in order to increase the air intake of the first air inlet 110, a plurality of air intake holes 120 are provided near the inclined lower end of the windsurfing board 100, as shown in the attached Figure 3 and attached Figure 4 The air inlet hole 120 may be one or more of a circular hole, a polygonal hole, a waist-shaped hole, and a fan-shaped hole.

[0043] In this embodiment, the inclined lower end of the windsurfing board 100 is serrated. Figure 3 and attached Figure 4 The sawtooth structure is beneficial to reducing wind noise at the first air inlet.

[0044] In this embodiment, in order to make the gas flow rate of the auxiliary air flow channel uniform and reduce the deposition of waste gas paint mist, the guide plate 500 and the curtain plate 300 are arranged in parallel. Therefore, the distance between each position point of the guide plate 500 and the curtain plate 300 is the same.

[0045] In this embodiment, the guide plate 500 may also be replaced by a guide slope processed when the shell 200 is formed, so as to reduce the cost of separately processing the guide plate.

[0046] In this embodiment, a porous plate 320 is provided at the inclined lower end of the curtain plate 300 along its length direction. Figure 4 As shown in . The holes on the porous plate 320 can be one or more of circular holes, polygonal holes, waist-shaped holes, and fan-shaped holes. The porous plate 320 is not flush with the surface of the curtain plate 300, that is, the porous plate 320 and the curtain plate 300 are arranged at an obtuse angle, and the porous plate 320 is approximately vertically facing the bottom direction of the shell 200. The porous plate 320 can completely block the second air inlet 510, or only partially block the second air inlet 510. As a result, the liquid medium on the curtain plate 300 continues to flow along the porous plate 320 after the inclined lower end of the curtain plate 300. On the one hand, under the suction action of the induced draft fan, the airflow carrying the exhaust gas paint mist can pass through the porous plate, increase the contact time between the exhaust gas paint mist and the liquid medium, and improve the capture and adsorption effect of the exhaust gas paint mist; on the other hand, the liquid medium can be slightly atomized when passing through the porous plate 320, which can further improve the capture effect of the exhaust gas paint mist.

[0047] In this embodiment, the edge of one end of the porous plate 320 away from the curtain plate 300 is serrated. Therefore, the serrated edge structure on the porous plate can reduce the splashing of liquid and is also conducive to reducing the wind noise at the second air inlet.

Claims

1. An exhaust gas filter discharger exhaust air exhaust guide structure, characterized in that: include: A sailboard, wherein the sailboard is tiltedly arranged at the upper inner part of the shell of the exhaust gas filter discharger, and the tilting direction of the sailboard is tilted from the open front side of the shell to the lower part of the rear side wall; there is a gap between the tilted lower end of the sailboard and the rear side wall of the shell; the tilted upper end and left and right edges of the sailboard are respectively in contact and sealed with the top and left and right side walls of the shell, so that the area above the sailboard and surrounded by the shell forms a negative pressure suction area; A curtain plate, the curtain plate is tiltedly arranged at the lower part of the shell body and is located below the sail plate, and a liquid medium flowing out of the liquid storage tank forms a liquid curtain on the upper surface of the curtain plate to capture the exhaust paint mist; the tilt direction of the curtain plate is from the rear side wall of the shell body to the lower front side of the opening; the tilted upper end of the curtain plate is located between the tilted lower end of the sail plate and the rear side wall of the shell body; the gap between the tilted upper end of the curtain plate and the tilted lower end of the sail plate serves as a first air inlet; the gas outside the negative pressure suction area can directly enter the negative pressure suction area through the first air inlet; A guide plate, the guide plate is arranged at the lower inner part of the shell and is located below the curtain plate; the left and right edges of the guide plate and one end of the rear side wall adjacent to the shell are respectively in contact and sealed with the left and right side walls and the rear side wall of the shell, so that an auxiliary air flow channel is formed between the guide plate and the curtain plate; the auxiliary air flow channel is connected to the negative pressure suction area; a second air inlet is formed between the front end of the guide plate and the inclined lower end of the curtain plate; the gas outside the negative pressure suction area can first enter the auxiliary air flow channel through the second air inlet, and then enter the negative pressure suction area.

2. The exhaust gas filter discharger exhaust air exhaust guide structure according to claim 1, characterized in that: A plurality of air inlet holes are provided near the inclined lower end of the sailboard.

3. The exhaust air extraction and flow guiding structure of the exhaust gas filter discharger according to claim 2, characterized in that: The air inlet hole is one or more of a circular hole, a polygonal hole, a waist-shaped hole, and a fan-shaped hole.

4. The exhaust gas filter discharger exhaust air exhaust guide structure according to claim 1, characterized in that: The inclined lower end of the sailboard is sawtooth-shaped.

5. The exhaust air extraction and flow guiding structure of the exhaust gas filter discharger according to claim 1, characterized in that: The guide plate and the curtain plate are arranged in parallel.

6. The exhaust gas filter discharger exhaust air exhaust guide structure according to claim 1, characterized in that: A perforated plate is provided at the inclined lower end of the curtain plate along its length direction; the perforated plate is arranged at an obtuse angle with the curtain plate and faces the bottom direction of the shell body.

7. The exhaust gas filter discharger exhaust air exhaust guide structure according to claim 6, characterized in that: The edge of one end of the porous plate away from the curtain plate is serrated.

8. The exhaust air extraction and flow guiding structure of the exhaust gas filter discharger according to claim 6, characterized in that: The holes on the porous plate are one or more of circular holes, polygonal holes, waist-shaped holes, and fan-shaped holes.

9. The exhaust air flow guiding structure of the exhaust gas filter discharger according to any one of claims 1 to 8, characterized in that: The guide plate can be replaced by a guide slope processed when the shell is formed.

10. An exhaust gas filter discharger, characterized in that: It comprises the exhaust gas filtering and discharging machine exhaust gas exhaust structure as described in any one of claims 1 to 9.

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