CN206104221U - Two air inlet water rotating formula cascade cabinets - Google Patents

Abstract

The utility model provides a double-inlet air-water rotary water curtain cabinet, which includes an exhaust device, a gas-liquid separation chamber, a water tank and a water circulation system. The exhaust device is arranged on the top of the water curtain cabinet, and the water tank is arranged on the bottom of the water curtain cabinet. There is a gas-liquid separation chamber above, and the water circulation system sprays the front outer wall of the gas-liquid separation chamber to form a water curtain. There are multiple barrier baffles in the gas-liquid separation chamber, and the barrier baffles are all inclined downward; the inlet of the gas-liquid separation chamber There are two air outlets in the vertical direction facing the spraying area. In addition, a plurality of water mist nozzles are arranged on the outer side of the front wall of the gas-liquid separation chamber; a small hole structure is arranged on the barrier baffle, and a plurality of upper and lower barrier baffles form a multi-stage screen. The invention has high paint mist purification efficiency and is convenient for cleaning paint slag.

Description

Double inlet wind water rotary water curtain cabinet

technical field

The invention relates to paint spraying and purifying equipment, in particular to a double-inlet air-water rotary water curtain cabinet.

Background technique

Spraying is one of the common processes in industrial production. It is generally carried out in the spray booth. When the workpiece is sprayed, there is always a part of the paint mist dispersed around the workpiece, which affects the health of the operator. If it is discharged directly to the outside, it will pollute the air environment. , so there is a spray paint purification equipment to solve this problem. The spraying workshop equipped with paint mist purification equipment is called a spraying room or a spraying room. The spraying room is a special place for spraying operations, which can meet the requirements of spraying operations on temperature, humidity, and air cleanliness, and can treat the waste gas generated by spraying operations. The rear discharge is an environmentally friendly spraying device.

The existing water curtain paint mist purification equipment divides the spraying room into the spraying operation section and the paint mist purification treatment section with the water curtain plate as the boundary. After the paint mist is fully mixed, the separation of the paint mist particles is achieved with the centrifugal force formed by the fan suction and the barrier of the baffle plate. In order to meet the requirements of environmental protection, the water curtains in the water curtain cabinet mostly use circulating water containing chemicals.

At present, the effect of the water curtain cabinet on separating paint particles is poor, resulting in exhaust gas being discharged into the air along with the air flow, and the outside air is polluted. The existing water curtain cabinet is equipped with a bottom air inlet, which is not conducive to the rapid removal of exhaust gas in the spraying area, and the purification efficiency is not high, and the cleaning position of the water tank is set on the spraying side, and the cleaning operation can only be performed when there is no spraying operation, especially in continuous During the operation, if the cleaning is not timely, the purification effect of the water curtain will be reduced.

Contents of the invention

In order to solve the above technical problems, the present invention provides a double-inlet wind water rotary water curtain cabinet, which has greatly improved purification efficiency, and the paint residue in the water tank can be cleaned at any time regardless of the spraying operation or not.

To achieve the above object, the technical solution of the present invention is:

Double-inlet and water-rotating water curtain cabinet, including exhaust device, gas-liquid separation chamber, water tank and water circulation system, the exhaust device is installed on the top of the water curtain cabinet, the water tank is installed at the bottom of the water curtain cabinet, and the gas-liquid separation is installed above the water tank The water circulation system supplies water to the front outer wall of the gas-liquid separation chamber to form a water curtain. There are multiple barrier baffles in the gas-liquid separation chamber, and the barrier baffles are all inclined downward; the air inlet of the gas-liquid separation chamber is vertically facing the spraying area. There are two vertically.

Further, a plurality of water mist nozzles are arranged outside the front wall of the gas-liquid separation chamber.

Further, one air inlet is adjacent to the water surface of the water tank, and the other air inlet is arranged in the middle of the front outer wall of the gas-liquid separation chamber.

Further, the air duct of the above-mentioned air inlet is designed to be U-shaped.

Further, barrier baffles are installed above the air inlets inside the gas-liquid separation chamber to form a primary barrier.

Further, the barrier baffles in the gas-liquid separation chamber are arranged transversely and crosswise.

Further, the blocking baffle is provided with a small hole structure, and the upper and lower blocking baffles form a multi-stage screen.

Further, the lower end of the blocking baffle is provided with a drooping edge.

Further, the rear side wall of the gas-liquid separation chamber is inclined forward near the bottom water tank, and is inserted into the water tank, so that the rear part of the water tank is exposed, and the front and rear of the water tank are connected.

Further, the water circulation system includes a water pump, a water spray pipeline, a water filter, and a water mist nozzle. The input pipe of the water pump is inserted into the water tank, and a water filter is arranged on the input pipe. The gas-liquid separation chamber faces the front of the spraying area. There are two overflow tanks on the side outer wall, and the output pipes of the water pump lead into the above-mentioned water mist nozzle and the overflow tank respectively, and the water overflowing from the overflow tank flows down along the front outer wall of the gas-liquid separation chamber to form a water curtain, and into the tank.

Furthermore, the upper side of the water tank is provided with a deflector inclined towards the rear of the water tank, so that the water flowing down from the water curtain and the gas-liquid separation chamber is guided to the rear of the water tank by the deflector, and then enters the water pump after passing through the filter device to realize water circulation. .

The paint mist purification efficiency of the double-inlet water-rotary water curtain cabinet is significantly improved, and the paint slag accumulates on the back of the sink, even if the front is being sprayed, it can also be cleaned.

Description of drawings

The longitudinal section schematic diagram of Fig. 1 the present invention;

Fig. 2 is a schematic diagram of water mist arrangement of the present invention;

Fig. 3 is a schematic diagram of the barrier baffle structure of the present invention;

The structural representation of the water tank of Fig. 4 of the present invention;

In the figure: 1-spray gun, 2-overflow tank, 3-front outer wall, 31-water mist nozzle, 4-exhaust fan, 5-rear outer wall, 6-blocking baffle, 61-small hole, 7-after blocking water drops, 8-water tank, 9-water pump, 10-purified exhaust gas, 11-gas-liquid separation chamber, 12-air inlet, 13-deflector, 14 filter device.

detailed description

The present invention will be further explained below in conjunction with accompanying drawings 1-3 of the description.

The double-inlet wind water rotary water curtain cabinet of the present invention, as shown in Figure 1, comprises exhaust fan 4, barrier baffle plate 6, water tank 8, water pump 9 and water spray pipeline, water filter, and the input pipe of water pump 9 is inserted into water tank , and a water filter is provided on the input pipe, and two overflow grooves 2 are arranged on the front side outer wall of the gas-liquid separation chamber 11 facing the spraying area, and the water overflowing from the overflow groove 2 runs along the front side of the gas-liquid separation chamber 11 The outer wall 3 flows downward into the water tank, and the output pipes of the water pump 9 respectively lead into the water mist nozzle 31 and the overflow tank 2; the exhaust fan 4 is arranged on the top of the water curtain cabinet to extract the waste gas in the water curtain cabinet, the water tank 8 and the water pump 9 is arranged at the bottom of the water curtain cabinet, and a gas-liquid separation chamber 11 is arranged above the water tank 8, and a barrier baffle 6 is arranged in the gas-liquid separation chamber 11, and the barrier baffle 6 is inclined downward to facilitate the exhaust gas being sucked Contained moisture and paint mist particles are blocked by the barrier baffle, and the blocked water droplets condense and drip down into the lower water tank 8;

There are two air inlets of the water curtain cabinet in the vertical direction facing the spraying area, one of which is close to the water surface of the water tank, called air inlet 1, and the other is set in the middle above the water tank, called air inlet 2, for gas-liquid separation The side wall of the chamber 11 facing the spraying area is provided with horizontal gaps at the positions corresponding to the first air inlet and the second air inlet, so that the water curtain flowing on the front side wall can shower and clean the waste gas at the air inlet; The air duct of the air outlet 2 is designed as U-shaped, and the air flow forms a vortex movement at the U-shaped structure, which is called vortex paint mist treatment. The inside of the gas-liquid separation chamber 11 is provided with a barrier baffle above the air inlet 1 and the air inlet 2. 6. After passing through the U-shaped air duct, the exhaust gas meets the primary barrier, and each barrier baffle 6 is arranged horizontally and crosswise, and then the air flow rises along the gap between the barrier baffles and is sucked away by the exhaust fan.

The rear outer wall of the gas-liquid separation chamber 11 of the present invention is inclined forward at the lower part, and is inserted into the water tank, so that the rear part of the water tank is exposed on the rear side, and the front and rear parts of the water tank are connected. The advantage is that the operator can clean it up in time. Sediment and floating matter in the tank.

Under the rotating centrifugal force of the exhaust fan, the mixed air containing paint mist is sucked into the air inlet 1 and the air inlet 2 at a high speed, and the vortex paint mist is processed. The treated paint mist waste gas enters the gas-liquid separation chamber 11, and the paint mist is separated by centrifugal force. The fog is separated from the exhaust gas, blocked by the blocking baffle, and then discharged to the outside through the exhaust fan. The blocked water and paint residue fall back to the lower water tank, and the paint residue floats on the water surface of the water tank. The cleaned exhaust gas is discharged to the outdoor purification box through the exhaust fan, and is discharged at high altitude after the treatment reaches the standard.

In order to improve the paint mist treatment efficiency, the present invention is further provided with a plurality of water mist nozzles 31 on the outside of the front wall of the gas-liquid separation chamber 11. The water mist nozzles 31 carry out primary treatment to the paint mist that will enter the air inlet, and pass through the paint mist particles. Water mist is attached to the top to increase the weight of the particles. During the falling process of the particles, a part flows into the lower water tank with the water flow on the front wall, and the other part is sucked into the air inlet, and then enters the gas-liquid separation chamber 11. It is precisely because of the water mist that the paint The weight of the mist particles makes them easier to be thrown off by centrifugal force and blocked by the blocking baffle during the process of vortex paint mist treatment and gas-liquid separation. The implementation of this technical means improves the purification efficiency of the present invention by 20 %.

On the other hand, another improvement of the present invention is that small holes are provided on the blocking baffle 6 , as shown in FIG. 3 , the small holes are evenly distributed on the blocking baffle 6 . On the one hand, the setting of the small holes is conducive to the flow of the suction airflow. On the other hand, the water on the small holes is more likely to absorb the water in the airflow due to the effect of surface tension, and can also screen out some paint mist particles. The small holes on the barrier baffle 6 can be designed with different apertures or different shapes.

Furthermore, the size of the small holes on each blocking baffle plate 6 is from the low position to the high position and in turn from large to small, forming a multi-stage screen structure. This structure further effectively improves the purification efficiency of the present invention, reduces power consumption at the same time, and effectively improves the working efficiency without changing the general structure of the hydrocyclone water curtain cabinet.

The upper side of the water tank 8 is provided with a deflector 13 inclined to the rear of the water tank, so that the water flowing down from the water curtain and the gas-liquid separation chamber is guided to the rear of the water tank by the deflector, and then enters the water pump after passing through the filter device 14 to realize water circulation. .

In order to eliminate the viscosity of the paint residue and prevent the rust of the water curtain cabinet, use a treatment agent to control the pH value in the water tank within the range of pH9~11, especially when using strong acidic paint. The paint slag in the water tank should be removed in time to avoid accumulation.

The double-inlet water-rotary water curtain cabinet of the present invention has high paint mist purification efficiency, and paint residues accumulate on the back of the water tank so that they can be cleaned at any time.

The invention adopts the centrifugal force eddy current mode of the fan, and the purification efficiency of the paint mist is as follows: the melamine paint reaches 95%, and the plastic grease paint and nitro paint reach 94%.

The above embodiments are only used to illustrate the present application, but not to limit the present application. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions will not depart from the spirit and scope of the technical solutions of the present invention, and should be covered by this technical solution. within the scope of the claims of the invention.

Claims (10)

1. The water curtain cabinet with double inlet and water rotation is characterized in that the water curtain cabinet includes an exhaust device, a gas-liquid separation chamber, a water tank and a water circulation system, the exhaust device is arranged on the top of the water curtain cabinet, and the water tank is arranged on the water curtain There is a gas-liquid separation chamber at the bottom of the cabinet and above the water tank. The water circulation system supplies water to the front outer wall of the gas-liquid separation chamber to form a water curtain. There are multiple barrier baffles in the gas-liquid separation chamber, and the barrier baffles are all inclined downward; There are two air inlets of the separation chamber in the vertical direction facing the spraying area. 2. The double-inlet hydro-rotary water curtain cabinet according to claim 1, characterized in that: one air inlet is close to the water surface of the water tank, and the other air inlet is set in the middle of the front outer wall of the gas-liquid separation chamber. 3. The double-inlet hydro-rotary water curtain cabinet according to claim 2, characterized in that: the air duct of the air inlet is designed in a U-shape. 4. The water curtain cabinet with double air inlet and water rotation according to claim 3, characterized in that: barrier baffles are arranged above the air inlet in the gas-liquid separation chamber to form a first-level barrier. 5. The double-inlet water-rotating water curtain cabinet according to claim 4, characterized in that: the barrier baffles in the gas-liquid separation chamber are arranged transversely and crosswise. 6. The double-inlet water-rotating water curtain cabinet according to claim 1, characterized in that: the barrier baffle is provided with a small hole structure, and a plurality of upper and lower barrier baffles form a multi-stage screen. 7. The water curtain cabinet with double air intake and water rotation according to claim 6, characterized in that: the lower end of the barrier baffle is provided with a drooping edge. 8. The double-inlet water-rotary water curtain cabinet according to claim 7, characterized in that: the rear side wall of the gas-liquid separation chamber is inclined forward at a position close to the bottom water tank, and is inserted into the water tank, so that the rear part of the water tank is exposed , and the front and rear of the water tank are connected. 9. The double-inlet water-rotary water curtain cabinet according to claim 8, characterized in that: the water circulation system includes a water pump, a water spray pipeline, a water filter, and a water mist nozzle, and the input pipe of the water pump is inserted into the water tank, and A water filter is provided on the input pipe, and two overflow tanks are provided on the outer wall of the front side of the gas-liquid separation chamber facing the spraying area. The water flows down along the front outer wall of the gas-liquid separation chamber to form a water curtain, and flows into the water tank. 10. The double-inlet water-rotary water curtain cabinet according to claim 8 or 9, characterized in that: the upper side of the water tank is provided with a deflector inclined to the rear of the water tank, so that the water flowing down from the water curtain and the gas-liquid separation chamber The water is led to the rear of the water tank by the deflector, and then enters the water pump after passing through the filter device to realize water circulation.