CN201437105U - Purification recovery device for wet enamel spraying - Google Patents

Abstract

The utility model discloses a purification and recovery device for wet enamelling spraying. The purification and recovery device comprises: a spraying chamber (1), which is used for spraying workpieces and generating wet enamelling dust gas therein; the dust gas chamber ( 4), the dust chamber (4) is in communication with the spray chamber (1); a sintered plate filter (3), the sintered plate filter (3) includes a gas channel and a sintered filter installed in the gas channel A plate filter element, the gas passage includes an air inlet, and the air inlet is connected to the dust chamber. The sintered plate filter element is a porous filter material with good air permeability made of polymer material by sintering process. After the dust gas from the spraying chamber (1) enters the dust gas chamber (4), it is dedusted and purified by the sintered plate filter (3) and then sent to the atmosphere or the spraying chamber (1).

Description

Purification recovery device for wet enamel spraying

technical field

The utility model relates to a device for purifying and recovering wet enamel powder produced in wet enamel spraying production.

Background technique

When spraying wet enamel, after the glaze slurry is atomized by the spray gun, part of it is sprayed and deposited on the surface of the workpiece, and the other part is dissipated into the spraying room. The spraying room should be equipped with an air supply, exhaust and purification system to treat the dissipated glaze and avoid pollution to the working environment.

Wet purifiers can be used for purification and dust removal. However, wet scrubbers cannot meet the current national environmental emission standards due to low capture efficiency. Moreover, wet purifier equipment occupies a large area, which will cause secondary water pollution, and the captured glaze slurry cannot be recycled, so wet enamel spraying rarely uses wet purifiers.

Dry dust collectors such as bag or cartridge dust collectors can also be used for purification and dust removal. However, in the field of wet enamel spraying, due to the sticky glaze slurry and strong abrasiveness, conventional dry dust collectors are easily blocked and damaged, and cannot be used normally.

Therefore, it is desired to provide a dry-type high-efficiency purification and recovery device with high efficiency, low energy consumption, long service life and recyclable glaze.

Contents of the invention

The utility model aims at the problems existing in the existing purification technology, and provides a purification recovery device with high dust removal efficiency, low energy consumption, long service life, low maintenance cost and recyclable glaze.

According to one aspect of the present utility model, there is provided a purification and recovery device for wet enamelling spraying, the purification and recovery device includes: a spraying chamber for spraying workpieces therein and generating wet enamelling dust gas therein; dust gas chamber , the dust chamber communicates with the spray chamber; a sintered plate filter, the sintered plate filter includes a gas channel and a sintered plate filter element installed in the gas channel, the gas channel includes an air inlet, the air inlet Connected to the dust chamber, the sintered plate filter element is a porous filter material with good air permeability made of polymer material by sintering process, wherein, after the dust gas from the spraying chamber enters the dust chamber, it passes through The sintered plate filter is sent to the atmosphere or the spraying room after dedusting and purifying.

According to a preferred embodiment, the spraying chamber and the dust chamber of the purification recovery device are designed as an integrated structure, the air inlet is inserted in the dust chamber, and a The baffle is used to prevent the glaze slurry from being directly sprayed onto the surface of the sintered plate filter, and the baffle is provided with grooves or holes, or has a gap in the lower part.

In the above embodiments, the spray chamber and the dust chamber are physically separated by baffles. However, the baffle is not necessary, that is to say, the spray chamber and the dust chamber can be directly communicated without a baffle, so that the spray chamber and the dust chamber share a space.

According to a preferred embodiment, in the above purification and recovery device, the dust chamber and the spraying chamber can be designed as a separate structure, wherein the spraying chamber and the dust chamber are connected through pipelines. According to the difference of the drying time of the glaze, the length of the pipeline connecting the spray chamber and the dust chamber is usually not more than 30 meters, preferably, the length of the pipeline is 10-20 meters.

Preferably, the sintered plate filter has a vertical gas passage, and the sintered plate filter element is communicated with a clean gas box. Preferably, an induced draft fan, a motor, and a muffler box are arranged on the clean air box. The muffler box is connected to the above air outlet, and the purified air can be directly discharged indoors through the air outlet. Preferably, a tee and an air regulating valve are connected to the outlet of the air outlet, and the purified air flow can be partially or completely returned to the spraying room through the air supply pipe.

Preferably, the above-mentioned induced draft fan, motor, silencer box and sintered plate filter adopt an integrated structure, that is, the induced draft fan, motor and silencer box are installed on the clean air box of the sintered plate filter step by step, for reducing floor space and Duct wind resistance.

The sintered plate filter of the above-mentioned purification and recovery device adopts a sintered plate filter element with good oil and water repellency and good anti-abrasion performance. The sintered plate is a porous filter material with good air permeability made of polymer material by sintering process. It has a wavy pleated structure, and its surface is coated with PTFE (polytetrafluoroethylene), which has good oil and water repellency. The sintered plate has a long service life and high filtration precision. The width of the sintered plate filter element is 400mm-1600mm, the height is 500mm-1600mm, and the thickness is 40mm-90mm. Sintered plate filter elements can be installed vertically or horizontally. Preferably, it is installed vertically.

Preferably, the sintered plate filter also includes a pulse back-blowing soot cleaning system, which uses compressed air as a back-blowing soot cleaning medium to remove dust on the filter plate. The above-mentioned pulse back-blowing dust cleaning system can use timing, differential pressure or mixed methods for cleaning, and the mixed cleaning method is preferred.

Preferably, in the above-mentioned purification and recovery device, when the dust chamber and the spraying chamber are designed as a separate structure, an ash hopper and an ash bucket can be arranged under the sintered plate filter element of the above-mentioned purification and recovery device for recovering the glaze.

Preferably, in the above-mentioned purification and recovery device, when the dust chamber and the spraying chamber are designed as an integrated structure, no ash hopper or ash bucket can be provided under the sintered plate filter element, and the glaze collected by the sintered plate filter can be combined with the spraying The glaze deposited in the chamber shares a centralized ash hopper or ash bin.

The utility model has the advantage that, because the sintered plate filter has a very high collection efficiency, the emission is less than 1mg/m ³ , and the purified airflow can be discharged indoors directly. In addition, part or all of the purified air flow can be discharged into the spray booth through the air supply pipe, so that there is no need to set up a separate air supply system, which not only saves equipment investment, but also has a good energy-saving effect.

Description of drawings

Fig. 1 is a schematic diagram of an embodiment of a purification and recovery device for wet enamel spraying according to the present invention, wherein the spraying chamber and the clean air chamber adopt an integrated structure design.

Fig. 2 is a schematic diagram of another embodiment of the purification and recovery device for wet enamel spraying according to the present invention, wherein the spraying chamber and the clean air chamber adopt a split structure design.

Detailed ways

The specific embodiment of the utility model is described in detail below in conjunction with accompanying drawing.

Fig. 1 is a schematic diagram of an embodiment of a purification and recovery device for wet enamel spraying according to the present invention, wherein the spraying chamber and the clean air chamber adopt an integrated structure design.

As shown in FIG. 1 , the purification recovery device for wet enamel spraying according to the present invention includes a spraying chamber 1 and a dust chamber 4 , which are separated by a baffle 2 . A workpiece 14 and a glaze slurry tank 15 are placed in the spray booth 1 . During work, the spray gun 13 sprays the glaze slurry from the glaze slurry tank 15 to the workpiece 14, and a large amount of dust can be generated in the process.

In order to purify the dust generated during the spraying process, the dust-containing air in the spraying chamber 1 needs to be introduced into the dust chamber 4 for purification and dust removal. A sintered plate filter 3 for cleaning the air is arranged in the dust chamber 4 . The sintered plate filter 3 may include a sintered plate filter element for purifying air and a scrubber box 6 for discharging the purified air. In the device shown in FIG. 1 , the scrubber box 6 is placed on the upper part of the sintered plate filter 3 .

In order to prevent the glaze slurry from being directly sprayed into the dust chamber 4 during wet enamel spraying, a baffle or a retaining wall 2 can be set between the spray chamber 1 and the dust chamber 4 . The baffle plate 2 can be slotted or holed, or there is a gap at the bottom of the baffle plate 2, so that the dust gas generated during the spraying process can enter the dust gas chamber 4.

Preferably, the above-mentioned sintered plate filter 3 may also include a pulse back-blowing soot cleaning system 5, which uses compressed air as a back-blowing soot cleaning medium to remove dust on the filter plate. The above-mentioned pulse back-blowing ash cleaning system 5 can use timing, differential pressure or mixed methods for ash removal, and the mixed ash removal method is preferred.

The clean air box can be connected with the induced draft fan 7, the motor 8 and the muffler box 9. Preferably, the muffler box 9 is provided with an air outlet 10 through which the purified air can be directly discharged. Preferably, a tee and an air regulating valve 11 are connected to the outlet of the air outlet 10 , and part or all of the purified air flow can be discharged into the spraying chamber 1 through the air supply pipe 12 .

Preferably, the above-mentioned induced draft fan 7, motor 8, silencer box 9 and sintered plate filter 3 adopt an integrated structure, that is, the induced draft fan 7, motor 8 and silencer box 9 are installed in the clean air box 6 of the sintered plate filter 3 step by step It is used to reduce floor space and pipe wind resistance.

Fig. 2 is a schematic diagram of another embodiment of the purification and recovery device for wet enamel spraying according to the present invention, wherein the spraying chamber and the clean air chamber adopt a split structure design. The partial structure of the purification recovery device shown in FIG. 2 is the same as or similar to the embodiment in FIG. 1 , so the same or similar structure as the embodiment in FIG. 1 will not be described again. In FIG. 2, structures similar to those in FIG. 1 are given the same reference numerals.

As shown in Figure 2, in this embodiment, the difference from the embodiment shown in Figure 1 is that the spray chamber 1 and the dust chamber 4 adopt a split structure design, wherein the spray chamber 1 and the dust chamber 4 are connected by pipelines Up, the airflow containing dust from the spray booth is introduced into the dust air chamber through the pipe. An ash hopper 16 and an ash bucket 17 for collecting and storing the cleaned dust are arranged at the bottom of the dust chamber.

However, although the ash hopper 16 and the ash bucket 17 shown in FIG. 2 are not shown in FIG. 1 , it is not difficult to understand that the ash hopper 16 and the ash bucket 17 can also be applied to the embodiment shown in FIG. 1 . Preferably, when the dust chamber and the spraying chamber are designed as an integrated structure, no ash hopper or ash bucket can be provided under the sintered plate filter element, and the glaze collected by the sintered plate filter can be shared with the glaze deposited in the spraying chamber. Type ash hopper or ash bin.

Since various changes could be made without departing from the scope of the present invention, all technical features or contents contained in the above description or shown in the accompanying drawings should be interpreted as illustrative rather than restrictive.

Claims (10)

1. A purification recovery device for wet enamel spraying, characterized in that, the purification recovery device comprises: A spray booth (1) for spraying workpieces therein and generating wet spray dust therein; A dust chamber (4), the dust chamber (4) communicates with the spray chamber (1); A sintered plate filter (3), the sintered plate filter (3) includes a gas channel and a sintered plate filter element installed in the gas channel, the gas channel includes an air inlet, the air inlet communicates with the dust chamber, the The sintered plate filter element is a porous filter material with good air permeability made of polymer material by sintering process. Wherein, after the dust gas from the spraying chamber (1) enters the dust chamber (4), it is dedusted and purified by the sintered plate filter (3) and then sent to the atmosphere or the spraying chamber (1). 2. The purification recovery device for wet enamel spraying as claimed in claim 1, characterized in that, the air inlet is inserted in the dust chamber (4), and the spray chamber (1) and the dust A baffle (2) is arranged between the air chambers (4) to prevent the glaze slurry from being directly sprayed onto the surface of the sintered plate filter element, and the baffle (2) is provided with grooves or holes, or has a gap. 3. The purification recovery device for wet enamel spraying as claimed in claim 1, characterized in that, the sintered plate filter (3) adopts a split type with the dust chamber (4) and the spraying chamber (1) According to the structural design, the dust chamber (4) communicates with the air inlet of the sintered plate filter (3) through a pipeline. 4. The purification recovery device for wet enamel spraying as claimed in claim 3, wherein the length of the pipeline is not more than 30 meters. 5. The purification and recovery device for wet enamel spraying according to any one of claims 1 to 4, characterized in that, the sintered plate filter (3) also includes a pulse back-blowing soot cleaning system (5), The pulse back-blowing soot cleaning system (5) uses compressed air as a back-blowing soot cleaning medium to remove dust on the sintered plate filter element. 6. The purification and recovery device for wet enamel spraying as claimed in any one of claims 1 to 4, wherein the sintered plate filter element has a wave-shaped pleated structure, and its surface is a polytetrafluoroethylene coating , the width is 400mm-1600mm, the height is 500mm-1600mm, and the thickness is 40mm-90mm. 7. The purification and recovery device for wet enamel spraying according to claim 6, wherein the sintered plate filter element is installed vertically or horizontally. 8. The purification recovery device for wet enamel spraying according to any one of claims 1 to 4, characterized in that, the gas channel of the sintered plate filter (3) has a clean air box. 9. The purification and recovery device for wet enamel spraying as claimed in claim 8, characterized in that, in the gas channel, an induced draft fan (7), a motor (8) and silencer box (9). 10. The purification recovery device for wet enamel spraying as claimed in claim 9, characterized in that, the muffler box (9) is connected to an air outlet (10) downstream, and the air outlet (10) An air regulating valve (11) is provided, whereby the air stream purified by the sintered plate filter (3) can be returned to the spraying chamber (1) in whole or in part through one or more air supply pipes (12).

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