Waste gas filtering treatment device for spraying production line

Abstract

The utility model provides a waste gas filtering treatment device for a spraying production line, and relates to the technical field of waste gas treatment. The device comprises a box body with an opening in the top, an air guide barrel with an opening in one end is arranged at the top of the box body, a plurality of water leakage holes are formed in the outer surface of the bottom side of the air guide barrel in an array penetrating mode, the outer surface of the side, close to the closed end, of the air guide barrel communicates with an exhaust pipe, and an activated carbon adsorption plate is arranged in the exhaust pipe; waste gas circulates in the air guide barrel, water is pumped and sprayed outwards from the interior of airflow through the guide pipe and the atomization spray head, water mist makes full contact with the waste gas, solid impurities in the waste gas are separated under the action of contact and collision, and filtration and separation are achieved by means of collision and neutralization of the water mist and the waste gas. Water mist is used for spraying, blockage is avoided, normal circulation of airflow is not affected, meanwhile, continuous filtering separation can be carried out, and the waste gas treatment efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of waste gas treatment, and in particular to a waste gas filtering and treatment device for a spray production line. Background Art

[0002] Spray painting is to cover the surface of metal or non-metal with a protective layer or decorative layer. The existing spraying methods mostly use two types: aerated spraying and airless spraying. Both of these spraying methods use liquid paint to form atomized dust particles under the action of air pressure or pressure to adhere to the surface of the material.

[0003] The existing paint spraying production lines are all in the indoor area where objects are sprayed with paint. In order to prevent the exhaust gas generated during the paint spraying from flowing into the outside air, the exhaust gas will be filtered. The existing method usually uses a filter to filter the particulate impurities in the exhaust gas, and then the exhaust gas is adsorbed and purified after filtering. Since the organic exhaust gas in the paint spraying room contains a large amount of paint mist, a large amount of paint mist will stick to the filter net if the paint mist is only filtered and intercepted by the filter net, which can easily cause blockage of the filter net. After the filter net has been used for a period of time, it needs to be frequently removed for cleaning and replacement. During the cleaning and replacement process, the organic exhaust gas cannot be treated, thereby reducing the efficiency of treating the organic exhaust gas. Therefore, the present application proposes an exhaust gas filtration and treatment device for a spraying production line. Utility Model Content

[0004] The purpose of this application is to solve the problems in the above-mentioned background technology, and to provide an exhaust gas filtration and treatment device for a spray production line.

[0005] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0006] An exhaust gas filtration and treatment device for a spray production line, comprising:

[0007] A box body with an open top is provided on the top of which an air guide tube with an open end is provided. A plurality of water leakage holes are provided in an array on the outer surface of the bottom side of the air guide tube. An outer surface of one side of the air guide tube close to the closed end is connected to an exhaust pipe, and an activated carbon adsorption plate is provided in the exhaust pipe.

[0008] A conduit with an opening at one end coaxially passes through the closed end of the air duct. The outer surface of one end of the conduit located inside the air duct is connected to a plurality of atomizing nozzles in an array. The open end of the conduit is connected to the box via a delivery pipe, and the delivery pipe is connected to a water pump arranged on the box.

[0009] Furthermore, the inner wall of the air guide tube is provided with a plurality of annular plates in an array along its length direction, and the duct is provided with a plurality of circular plates in an array along its length direction, and the plurality of circular plates and the plurality of annular plates are staggered.

[0010] Furthermore, the conduit is rotatably connected to the air guide tube, a rotary joint is connected between the open end of the conduit and the delivery pipe, a motor is provided on the air guide tube, and an output shaft of the motor is transmission-connected to the conduit through a bevel gear assembly.

[0011] Furthermore, the closed end of the duct is connected to a fan blade head.

[0012] Furthermore, a slot is provided on the inner wall of the exhaust pipe, the activated carbon adsorption plate is movably inserted into the slot, and a pressure ring is threadedly provided on the end of the exhaust pipe.

[0013] Furthermore, a filter screen is provided on the inner wall of the box.

[0014] Furthermore, the filter is tiltedly arranged in the box body, and the outer wall of the box body and the end at which the filter has a low inclination are connected to a discharge pipe, and the end of the discharge pipe is threadedly sleeved with a pipe cap.

[0015] Furthermore, the filter screen includes an arc portion and two connected straight plate portions, and the arc portion corresponds to the discharge pipe.

[0016] The beneficial effects of this application are as follows:

[0017] In the present application, the exhaust gas is circulated along the air duct, and water is extracted and sprayed out from the inside of the air flow through the conduit and the atomizing nozzle. The water mist is in full contact with the exhaust gas, and the solid impurities in the exhaust gas are separated under the action of contact and collision. The collision between the water mist and the exhaust gas is used to neutralize them, thereby achieving filtration and separation. Compared with the traditional method of filtering and intercepting with a filter mesh, the use of water mist for spraying will not only not clog and affect the normal circulation of the airflow, but also can perform continuous filtration and separation, thereby improving the efficiency of exhaust gas treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural diagram of this application;

[0019] Figure 2 It is a sectional view of the three-dimensional structure of this application;

[0020] Figure 3 This is another three-dimensional structural cross-sectional view of the present application;

[0021] Figure 4 This application Figure 2 Enlarged view of point A in the middle;

[0022] Figure 5 This application Figure 2 Enlarged view of point B in the middle;

[0023] Figure numerals: 1. Box body; 2. Air guide tube; 3. Water leakage hole; 4. Exhaust pipe; 5. Activated carbon adsorption plate; 6. Conduit; 7. Atomizing nozzle; 8. Delivery pipe; 9. Water pump; 10. Ring plate; 11. Round plate; 12. Rotary joint; 13. Motor; 14. Bevel gear assembly; 15. Fan blade head; 16. Slot; 17. Pressure ring; 18. Filter; 19. Discharge pipe; 20. Pipe cap. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0025] like Figure 1-Figure 5 As shown, an embodiment of the present application proposes an exhaust gas filtration and treatment device for a spray production line, comprising:

[0026] A box body 1 with an opening at the top is used to place clean water in the box body 1. An air duct 2 with an open end is provided on the top of the box body 1. The air duct 2 covers the top opening of the box body 1. The open end of the air duct 2 is constructed with a tapered closing, and the tapered closing is connected to the external pipeline for conveying exhaust gas. A plurality of water leakage holes 3 are provided in an array on the outer surface of the bottom side of the air duct 2. The outer surface of the side of the air duct 2 close to the closed end is connected to an exhaust pipe 4. An activated carbon adsorption plate 5 is provided in the exhaust pipe 4. When purifying the exhaust gas, the exhaust gas is conveyed to the air duct 2 via the external conveying pipeline, then circulates along the air duct 2, and is finally discharged from the exhaust pipe 4. When passing through the exhaust pipe 4, the activated carbon adsorption plate 5 purifies the exhaust gas;

[0027] A conduit 6 with an opening at one end coaxially passes through the closed end of the air duct 2. An array of atomizing nozzles 7 are connected to the outer surface of one end of the conduit 6 located inside the air duct 2. A delivery pipe 8 is connected to the open end of the conduit 6 and the box 1. The delivery pipe 8 is connected to a water pump 9 provided on the box 1. When the exhaust gas is filtered, the water pump 9 works to deliver the water in the box 1 through the delivery pipe 8 to the conduit 6, and then sprays it through the atomizing nozzles 7. When the exhaust gas flows along the air duct 2, the sprayed water mist impacts the airflow. Since the conduit 6 is coaxial with the air duct 2, the water mist is sprayed outward from the center of the airflow. , so that the sprayed water mist effectively contacts the exhaust gas, the water will react with the exhaust gas to neutralize it, and the water will carry out a small particle impurity in the exhaust gas and fall downward, thereby flowing back into the box body 1 through the water leakage hole 3. The water flow is circulated and sprayed, and the exhaust gas can be continuously filtered and treated. Preferably, in order to make the device more reasonable, a purification chemical agent can be added to the water in the box body 1, and the chemical agent is used to react with the chemical substances in the exhaust gas to neutralize it. In combination with the flushing and spraying of water, the solid impurities in the exhaust gas can be effectively separated. The solid impurities follow the water flow back into the box body 1, and the gas is discharged after being purified through the exhaust pipe 4;

[0028] In this solution, the exhaust gas is circulated along the air duct 2, and water is extracted and sprayed out from the inside of the air flow through the conduit 6 and the atomizing nozzle 7. The water mist is in full contact with the exhaust gas, and the solid impurities in the exhaust gas are separated under the action of contact and collision. The collision between the water mist and the exhaust gas is used to neutralize them, thereby achieving filtration and separation. Compared with the traditional method of filtering and intercepting with a filter mesh, the use of water mist for spraying will not only not clog and affect the normal circulation of the airflow, but also can perform continuous filtration and separation, thereby improving the treatment efficiency of the exhaust gas.

[0029] like Figure 2 As shown, in some embodiments, the inner wall of the air guide 2 is provided with a plurality of ring plates 10 in an array along its length direction, and the duct 6 is provided with a plurality of circular plates 11 in an array along its length direction. The plurality of circular plates 11 and the plurality of ring plates 10 are staggered. Preferably, a ventilation gap is left between the inner wall of the ring plate 10 and the duct 6, and a ventilation gap is left between the outer wall of the circular plate 11 and the inner wall of the air guide 2. The ring plates 10 and circular plates 11 are provided, and the two are staggered to guide the airflow, avoiding the horizontal straight flow of the airflow, and instead bend up and down to circulate, so that the exhaust gas can be better neutralized under the spray of water mist, and the filtering and separation effect of impurities can be effectively improved.

[0030] like Figure 5 As shown, in some embodiments, the conduit 6 is rotatably connected to the air duct 2, and a rotary joint 12 is connected between the open end of the conduit 6 and the delivery pipe 8. A motor 13 is provided on the air duct 2, and the output shaft of the motor 13 is transmission-connected to the conduit 6 through a bevel gear assembly 14. Preferably, the bevel gear assembly 14 includes two bevel gears, which are respectively fixed on the conduit 6 and the output shaft of the motor 13, and the teeth of the two are engaged. By rotatably connecting the conduit 6 with the air duct 2, the motor 13 performs work, and the conduit 6 is driven to rotate under the linkage of the bevel gear assembly 14, so that the sprayed water mist can completely cover the flow surface of the air duct 2, further improving the filtering and separation effect of solid impurities in the exhaust gas. The rotary joint 12 is connected between the conduit 6 and the delivery pipe 8. Without affecting the normal delivery of water, the delivery pipe 8 will not interfere with the rotation of the conduit 6, thereby improving practicality.

[0031] like Figure 2 As shown, in some embodiments, the closed end of the duct 6 is connected to a fan head 15, preferably, as shown in FIG. Figure 2As shown, the fan head 15 is located at the left end of the air guide tube 2. When the duct 6 rotates, the fan head 15 will be driven to rotate synchronously. When the fan head 15 rotates, it will apply an auxiliary conveying force to the right to the airflow. Since the water mist completely covers the air guide tube 2, the water mist will cause a certain resistance to the airflow. By setting the fan head 15, the auxiliary thrust generated by its rotation is utilized to ensure that the exhaust gas can flow smoothly along the air guide tube 2, thereby ensuring the filtering treatment effect of the exhaust gas.

[0032] like Figure 4 As shown, in some embodiments, a slot 16 is provided on the inner wall of the exhaust pipe 4, and the activated carbon adsorption plate 5 is movably inserted in the slot 16. A pressure ring 17 is threadedly sleeved on the end of the exhaust pipe 4. The activated carbon adsorption plate 5 will be saturated after being used for a period of time and needs to be replaced regularly. The activated carbon adsorption plate 5 is inserted into the slot 16, and then the pressure ring 17 is threadedly sleeved, so that the pressure ring 17 presses and fixes the activated carbon adsorption plate 5, making the installation or removal of the activated carbon adsorption plate 5 simple and convenient, and only the pressure ring 17 needs to be twisted to rotate.

[0033] like Figure 2 As shown, in some embodiments, a filter screen 18 is provided on the inner wall of the box body 1. The filter screen 18 is used to intercept impurities in the return water after separation, to prevent the separated impurities from mixing in the water in the box body 1 and entering the water pump 9, thereby protecting the water pump 9.

[0034] like Figure 1 and Figure 2 As shown, in some embodiments, the filter screen 18 is tiltedly arranged in the box body 1, and the outer wall of the box body 1 and the end at which the filter screen 18 has a low inclination are connected to a discharge pipe 19, and the end of the discharge pipe 19 is threadedly sleeved with a pipe cap 20. By tilting the filter screen 18, the intercepted impurities are guided to slide to the lower end to ensure that the circulation of water is not blocked. When filtering and separation are performed, the pipe cap 20 blocks the discharge pipe 19. When filtering and separation are not performed, the pipe cap 20 can be removed to clean the intercepted impurities through the discharge pipe 19.

[0035] like Figure 3 As shown, in some embodiments, the filter screen 18 includes an arc-shaped portion and two straight plate portions connected to each other, and the arc-shaped portion corresponds to the discharge pipe 19. The structure of the arc-shaped portion and the straight plate portion of the filter screen 18 allows solid impurities to eventually fall into the arc-shaped portion, and the arc-shaped portion corresponds to the discharge pipe 19, so as to facilitate more convenient and quick cleaning of impurities.

[0036] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A waste gas filtration treatment device for a spray production line, characterized in that: include: A box body (1) with an open top is provided on the top of which an air guide tube (2) with an open end is provided. A plurality of water leakage holes (3) are provided in an array on the outer surface of the bottom side of the air guide tube (2). An outer surface of one side of the air guide tube (2) close to the closed end is connected to an exhaust pipe (4). An activated carbon adsorption plate (5) is provided in the exhaust pipe (4). A conduit (6) with an open end coaxially passes through the closed end of the air guide tube (2); an outer surface of one end of the conduit (6) located inside the air guide tube (2) is connected to a plurality of atomizing nozzles (7) in an array; the open end of the conduit (6) is connected to the box (1) via a delivery pipe (8); and the delivery pipe (8) is connected to a water pump (9) provided on the box (1).

2. The exhaust gas filtration treatment device for a spraying production line according to claim 1, characterized in that: The inner wall of the air guide tube (2) is provided with a plurality of annular plates (10) in an array along its length direction, and the duct (6) is provided with a plurality of circular plates (11) in an array along its length direction, wherein the plurality of circular plates (11) and the plurality of annular plates (10) are distributed in an alternating manner.

3. The exhaust gas filtration treatment device for a spray coating production line according to claim 1, characterized in that: The conduit (6) is rotatably connected to the air guide tube (2); a rotary joint (12) is connected between the open end of the conduit (6) and the delivery pipe (8); a motor (13) is provided on the air guide tube (2); and an output shaft of the motor (13) is transmission-connected to the conduit (6) via a bevel gear assembly (14).

4. The exhaust gas filtration treatment device for a spray coating production line according to claim 3, characterized in that: The closed end of the duct (6) is connected to a fan blade head (15).

5. The exhaust gas filtration treatment device for a spray coating production line according to claim 1, characterized in that: A slot (16) is provided on the inner wall of the exhaust pipe (4), and the activated carbon adsorption plate (5) is movably inserted into the slot (16). A pressure ring (17) is threadedly sleeved on the end of the exhaust pipe (4).

6. The exhaust gas filtration treatment device for a spray coating production line according to claim 1, characterized in that: The inner wall of the box (1) is provided with a filter screen (18).

7. The exhaust gas filtration treatment device for a spray coating production line according to claim 6, characterized in that: The filter screen (18) is tiltedly arranged in the box body (1); the outer wall of the box body (1) and the end at which the filter screen (18) has a low tilt are connected to a discharge pipe (19); the end of the discharge pipe (19) is threadedly sleeved with a pipe cap (20).

8. The exhaust gas filtration treatment device for a spray coating production line according to claim 7, characterized in that: The filter screen (18) comprises an arc portion and two connected straight plate portions, and the arc portion corresponds to the discharge pipe (19).

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