Paint spraying waste gas treatment device

Abstract

The utility model relates to a paint spraying waste gas treatment device which comprises a sealed water tank and a sucking pump, two ends of the sealed water tank are respectively provided with a waste gas inlet and a waste gas outlet, the waste gas outlet extends upwards to be provided with an exhaust pipe, and a gas outlet of the exhaust pipe is connected with the sucking pump. And a first flow guide plate for guiding water to form sea wave type turnup is also arranged between the waste gas outlet and the exhaust pipe. The device is simple in structure, capable of enabling water to form sea wave type curled waves at the first flow guide plate under the action of negative pressure by only using one sucking pump, capable of repeatedly washing paint spraying waste gas by means of the waves, capable of greatly increasing the contact area of the water and the paint spraying waste gas and filtering out most particle impurities in the paint spraying waste gas, ingenious in design, convenient to operate and high in practicability. The equipment cost and the equipment energy consumption are low, and the economic value is high.

Description

Technical Field

[0001] The utility model relates to the technical field of paint spraying waste gas treatment, and more specifically refers to a paint spraying waste gas treatment device. Background Art

[0002] In the painting production process, the paint is atomized and attached to the surface of the workpiece, and then the excess paint is extracted in the form of atomization to form waste gas. Since the waste gas contains a large amount of particulate matter such as paint and additives, the waste gas has a strong odor. Direct discharge will cause great harm to the human body and serious pollution to the environment. Therefore, the waste gas should be treated before it is discharged.

[0003] Existing methods for treating paint waste gas include water spray filtration, activated carbon adsorption, catalytic combustion, catalytic oxygen and other treatment methods. Among them, water spray filtration is widely used in current industrial production due to its low energy consumption and high filtration efficiency. However, in the existing water spray filtration method, such as a pre-water curtain cleaning device for waste gas treatment in a paint spray room with authorization announcement number CN212492117U, or a water filtration structure of a water curtain cabinet for paint waste gas treatment with authorization announcement number CN216136913U, most of them use a water pump to pump water to form a water curtain, and an air pump to pump air to form an air flow loop to flow through the water curtain for filtration. This filtration method requires at least one water pump and one air pump to work together to complete the filtration operation, resulting in high cost of waste gas treatment equipment, high energy consumption of equipment, complex pipeline structure, and cumbersome assembly. Utility Model Content

[0004] The purpose of the utility model is to provide a paint spraying waste gas treatment device to solve the above problems.

[0005] The utility model adopts the following technical solutions:

[0006] A paint spraying waste gas treatment device includes a sealed water tank and an air pump, wherein an exhaust gas inlet and an exhaust gas outlet are respectively provided at both ends of the sealed water tank, an exhaust pipe is provided upwardly extending from the exhaust gas outlet, an air outlet of the exhaust pipe is connected to the air pump, and a first guide plate for guiding water to form a wave-like roll is also provided between the exhaust gas outlet and the exhaust pipe.

[0007] Furthermore, the first guide plate is an arc-shaped curved plate.

[0008] Preferably, the upper end of the arc-shaped curved plate extends toward the air inlet of the exhaust pipe, the lower end of the arc-shaped curved plate extends downward toward the exhaust gas inlet, and the lower end of the arc-shaped curved plate extends below the water level in the sealed water tank.

[0009] Furthermore, the exhaust pipe is a vertical tubular structure, and a plurality of second guide plates are alternately arranged from top to bottom in the exhaust pipe, and the second guide plates are arranged to be inclined downward.

[0010] Furthermore, an exhaust gas filter layer is provided on the air outlet of the exhaust pipe, and the exhaust gas filter layer can be a single-layer structure or a multi-layer structure.

[0011] Preferably, the exhaust gas filter layer is composed of one or more of a steel wire filter, an activated carbon filter layer, and a textile filter cloth.

[0012] Furthermore, the sealed water tank is composed of a rectangular box body sealed on six sides, the exhaust gas inlet is opened at the top of one end of the rectangular box body, and the exhaust gas outlet is opened at the top of the other end of the rectangular box body.

[0013] Furthermore, there is a certain distance between the water level line in the sealed water tank and the top inner wall of the sealed water tank.

[0014] Preferably, the water contained in the sealed water tank accounts for 80% of the volume of the sealed water tank.

[0015] From the above description of the structure of the utility model, it can be seen that compared with the prior art, the utility model has the following advantages:

[0016] 1. The utility model has a simple structure. It only uses an air pump and a first guide plate arranged at the exhaust gas outlet of the sealed water tank. Under the action of negative pressure, water can be formed into a wave-like rolling wave at the first guide plate. The paint exhaust gas is repeatedly flushed by the wave, which greatly increases the contact area between water and the paint exhaust gas, and filters out most of the particulate impurities in the paint exhaust gas. The utility model has a clever design, is easy to operate, has low equipment cost and energy consumption, and has high economic value.

[0017] 2. The utility model also has two filtering means on the exhaust pipe, which are the second guide plates staggered from top to bottom, forming a waterfall water curtain, and the exhaust gas filter layer arranged at the exhaust pipe outlet. Combined with the above-mentioned wave-like rolling waves, three filtering means are formed to gradually filter the paint exhaust gas, which has the advantages of good filtering effect and fast filtering speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model.

[0019] Figure 2 It is the left view of the utility model.

[0020] Figure 3 It is a top view of the utility model.

[0021] Among them, the numbers in the figure are: sealed water tank 10, exhaust gas inlet 11, exhaust gas outlet 12, first guide plate 13, exhaust pipe 20, second guide plate 21, exhaust gas filter layer 22, paint spray box 30. DETAILED DESCRIPTION

[0022] The specific implementation of the embodiment of the utility model is described below with reference to the accompanying drawings.

[0023] Reference Figures 1 to 3 A paint spraying waste gas treatment device includes a sealed water tank 10 and an air pump. The sealed water tank 10 is provided with an exhaust gas inlet 11 and an exhaust gas outlet 12 at both ends, and the exhaust gas outlet 12 is provided with an exhaust pipe 20 extending upward, and the air outlet of the exhaust pipe 20 is connected to the air pump. The air pump extracts the paint spraying waste gas from the exhaust gas inlet 11 to the exhaust gas outlet 12 and the exhaust gas outlet of the exhaust pipe 20 in sequence. A paint spraying box 30 is provided above the exhaust gas outlet 12, and the paint spraying box 30 is used for painting the workpiece, and the air outlet of the paint spraying box 30 is connected to the exhaust gas inlet 11.

[0024] In the utility model, the sealed water tank 10 is composed of a fully sealed box body, preferably but not limited to a rectangular box body, a cylindrical box body and the like, and in this embodiment, a rectangular box body is preferred. The top of one end of the rectangular box body is provided with the above-mentioned exhaust gas inlet 11, and a paint spraying box 30 arranged at the exhaust gas inlet 11; the top of the other end of the rectangular box body is provided with the above-mentioned exhaust gas outlet 12, and an exhaust pipe 20 arranged on the exhaust gas outlet 12. There is a certain distance between the water level line in the sealed water tank 10 and the inner side wall of the top of the sealed water tank 10, and the distance can be used as a flow path for the exhaust gas from the paint spraying. In this embodiment, the water contained in the sealed water tank 10 accounts for 80% of the volume of the sealed water tank 10.

[0025] Reference Figure 1 A first guide plate 13 for guiding water to form a wave-like roll is also provided between the exhaust gas outlet 12 of the sealed water tank 10 and the exhaust pipe 20. The first guide plate 13 is preferably an arc-shaped curved plate. The upper end of the arc-shaped curved plate extends toward the air inlet of the exhaust pipe 20, and the lower end of the arc-shaped curved plate extends downward toward the exhaust gas inlet 11, and the lower end of the arc-shaped curved plate extends below the water level line in the sealed water tank 10.

[0026] Reference Figure 1 The exhaust pipe 20 is a vertical tubular structure, which is vertically arranged on the exhaust gas outlet 12. A plurality of second guide plates 21 are staggered from top to bottom in the exhaust pipe 20. Preferably, the second guide plates 21 are staggered on the inner side walls of both sides of the exhaust pipe 20 in a tilted downward state.

[0027] An exhaust gas filter layer 22 is provided at the air outlet of the exhaust pipe 20. The exhaust gas filter layer 22 may be a single-layer structure or a multi-layer structure. The exhaust gas filter layer 22 may be composed of one or more filter structures such as a steel wire filter, an activated carbon filter layer, and a textile filter cloth. In this embodiment, the exhaust gas filter layer 22 is preferably a single-layer filter layer structure composed of a steel wire filter.

[0028] Reference Figures 1 to 3 When the utility model treats the paint exhaust gas, three filtering treatment methods are adopted to gradually treat the paint exhaust gas. Specifically, under the operation of the vacuum pump, the paint exhaust gas flows from the paint spray box 30 through the exhaust gas inlet 11, the water surface of the sealed water tank 10, the exhaust gas outlet 12, the exhaust pipe 20 and the exhaust gas filter layer 22 on the exhaust pipe 20 outlet, and is finally discharged by the vacuum pump.

[0029] Among them, the water in the sealed water tank 10, under the negative pressure of the vacuum pump, will form a wave-like rolling wave at the exhaust gas outlet 12 and the air inlet of the exhaust pipe through the arc-shaped curved structure of the first guide plate 13. The wave can be used to perform the first filtering treatment on the paint exhaust gas, that is, the paint exhaust gas is repeatedly washed by the wave-like rolling wave, which greatly increases the contact area between water and the paint exhaust gas, and filters out most of the particulate impurities in the paint exhaust gas.

[0030] Subsequently, part of the water and the paint exhaust gas will continue to be pumped into the exhaust pipe 20 under the action of negative pressure, wherein the part of the water will drip onto the second guide plate 21 under the action of inertia and gravity, and form a waterfall water curtain, through which the paint exhaust gas will be subjected to a second filtering treatment.

[0031] Finally, the paint exhaust gas is discharged to the exhaust port of the exhaust pipe 20, flows through the exhaust gas filter layer 22, and is subjected to a third filtering treatment by the exhaust gas filter layer 22, thereby achieving the purpose of basically removing particles in the paint exhaust gas.

[0032] The above is only a specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any non-substantial changes to the utility model using this concept shall be deemed as an infringement of the protection scope of the utility model.

Claims

1. A paint spraying waste gas treatment device, characterized in that: It includes a sealed water tank and an air pump. The sealed water tank is respectively provided with an exhaust gas inlet and an exhaust gas outlet at both ends. The exhaust gas outlet is provided with an exhaust pipe extending upward. The air outlet of the exhaust pipe is connected to the air pump. A first guide plate for guiding water to form a wave-like roll is also provided between the exhaust gas outlet and the exhaust pipe.

2. A paint spraying waste gas treatment device according to claim 1, characterized in that: The first guide plate is an arc-shaped curved plate.

3. A paint spraying waste gas treatment device according to claim 2, characterized in that: The upper end of the arc-shaped curved plate extends toward the air inlet of the exhaust pipe, the lower end of the arc-shaped curved plate extends downward toward the exhaust gas inlet, and the lower end of the arc-shaped curved plate extends below the water level in the sealed water tank.

4. A paint spraying waste gas treatment device according to claim 1, characterized in that: The exhaust pipe is a vertical tubular structure, and a plurality of second guide plates are arranged alternately from top to bottom in the exhaust pipe, and the second guide plates are arranged obliquely downward.

5. The paint spraying waste gas treatment device according to claim 1, characterized in that: An exhaust gas filtering layer is arranged on the air outlet of the exhaust pipe.

6. A paint spraying waste gas treatment device according to claim 5, characterized in that: The exhaust gas filter layer is composed of one or more of a steel wire filter, an activated carbon filter layer, and a textile filter cloth.

7. A paint spraying waste gas treatment device according to claim 1, characterized in that: The sealed water tank is composed of a rectangular box body with six sealed sides. The top of one end of the rectangular box body is provided with the exhaust gas inlet, and the top of the other end of the rectangular box body is provided with the exhaust gas outlet.

8. The paint spraying waste gas treatment device according to claim 1, characterized in that: There is a certain distance between the water level line in the sealed water tank and the top inner side wall of the sealed water tank.

9. A paint spraying waste gas treatment device according to claim 8, characterized in that: The water contained in the sealed water tank accounts for 80% of the volume of the sealed water tank.

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