CN212069289U - No drainage miniaturized paint treatment equipment - Google Patents

Abstract

The utility model discloses a miniaturized paint spraying treatment equipment without drainage. It includes: a dry spray booth and a VOC treatment device, the dry paint booth and the VOC treatment device are connected through a filter screen module; the VOC treatment device includes a cavity, and the cavity has an inlet and an outlet; the cavity A plurality of adsorbents are arranged in sequence in the cavity, and a regeneration module is arranged in the cavity. After VOC enters from the inlet and is purified by the plurality of adsorbents, the gas is discharged from the outlet, and the adsorption capacity of the adsorbent is reduced. After reaching the set value, it is sent to the regeneration module for VOC release, the released VOC is decomposed by high temperature, and the adsorbent that has released the VOC is added to the adsorption waiting sequence. The utility model adopts a filter screen module to solve the treatment of particulate matter and the waste of water resources. The purification effect reaches more than 90%, no secondary harmful waste is generated, and it can be recycled and reused, which improves the use efficiency and service life, reduces the use cost and energy consumption, and is suitable for miniaturization operations.

Description

No drainage miniaturized paint treatment equipment

technical field

The utility model relates to the field of environmental protection, in particular to a miniaturized paint spraying treatment equipment without drainage.

Background technique

VOC is an abbreviation for volatile organic compounds. VOCs in the ordinary sense are volatile organic compounds; but the definition in the environmental sense refers to a class of volatile organic compounds that are active, that is, the kind of volatile organic compounds that can cause harm.

VOCs are Volatile Organic Compounds, which have a huge impact on human health. When the VOC in the room reaches a certain concentration, people will feel headache, nausea, vomiting, fatigue, etc. in a short period of time. In severe cases, convulsions and coma will occur, and it will damage the human liver, kidney, brain and nervous system, causing memory loss. serious consequences such as decline.

Existing VOC treatment methods include:

1. Active adsorption method

In the organic waste gas treatment process, adsorption is one of the methods with good treatment effect and wide use. The activated carbon can not only greatly reduce the VOC concentration through the adsorption system, and realize the discharge of waste gas up to the standard, but also desorb by stripping after adsorption. After activated carbon is damp, the adsorption effect is greatly reduced, and the activated carbon after adsorption becomes secondary hazardous waste. Replacing activated carbon has become a high-cost consumable for enterprises. Subsequent recovery and treatment also need to be completed by professional institutions, and the cost of use is extremely high.

2. Induced wind high-altitude discharge method

This is one of the most common and easiest methods used by general enterprises in painting, sanding and other positions. It is low-cost, easy to operate and has obvious effects. However, high-altitude emission is only the transfer of pollution, and does not really solve the pollution problem, and the power of the induced draft fan and the installation height of the tuyere directly affect the effect of the induced draft.

3. Combustion treatment method

VOC is an organic volatile substance, which is easy to burn. It can be treated by normal temperature or catalytic oxidation combustion. The gas is introduced into the boiler or incinerator through the draft duct for combustion. This method is relatively complete and can basically convert VOC into CO ₂ , H ₂ O . However, the high-temperature organic gas has to undergo safety demonstration, and the continuous combustion process consumes a lot of energy, which cannot simultaneously achieve the effect of energy saving and emission reduction.

VOCs are commonly found in automotive paint. Traditional automotive paint has water curtain filtration, which has obvious drawbacks, cannot be miniaturized and lightweight, and has high cost and large footprint. Treated water requires special sewage discharge facilities and cannot be used in miniaturized painting work scenarios.

Therefore, in the painting process, there is still a lot of potential to be tapped.

Utility model content

One purpose of the present utility model is to provide a miniaturized paint spraying treatment equipment without drainage to improve the purification efficiency.

Another object of the present invention is to provide a miniaturized paint spraying treatment equipment without drainage, which can reduce the purification cost and the energy consumption.

Another object of the present invention is to provide a miniaturized paint spraying treatment equipment without drainage to realize miniaturized production.

In order to solve the above-mentioned technical problems, the present utility model provides a non-drainage miniaturized spray paint treatment equipment, including: a dry paint spray room and a VOC treatment equipment, wherein the dry spray room and the VOC treatment equipment are connected through a filter screen module; the The VOC treatment equipment includes a cavity, and the cavity has an inlet and an outlet; a plurality of adsorbents are arranged in sequence in the cavity, a regeneration module is arranged in the cavity, and VOC enters from the inlet and passes through the plurality of adsorbents. After the adsorbent is purified, the gas is discharged from the outlet. After the adsorption capacity of the adsorbent is reduced to the set value, it is sent to the regeneration module for VOC release. The released VOC is decomposed by high temperature, and the adsorbent that has released the VOC is added. Adsorption waiting sequence.

Optionally, for the non-drainage miniaturized painting treatment equipment, the cavity is divided into a first area and a second area that are isolated from each other, and the first area is sequentially arranged from the inlet to the outlet. a plurality of adsorbents; the second region is arranged with a plurality of spare adsorbents, and the regeneration module is arranged in the second region.

Optionally, the non-drainage miniaturized paint spraying treatment equipment further includes an adsorbent conveying device, when the adsorption capacity of the adsorbent closest to the inlet decreases to a set value, the adsorbent conveying device After starting, a spare adsorbent is delivered to the first area, the adsorbents in the other first areas are replenished in the direction of the inlet in turn, and the adsorbent closest to the inlet is delivered to the regeneration module.

Optionally, for the non-drainage miniaturized paint spraying treatment equipment, an isolation door is provided between the first area and the second area, and the isolation door is opened when the adsorbent is conveyed.

Optionally, for the non-drainage miniaturized paint spraying treatment equipment, in the first area, a VOC concentration detection device is provided next to each of the adsorbents.

Optionally, for the non-drainage miniaturized painting treatment equipment, the regeneration module includes a sealed cavity, and the sealed cavity is provided with an adsorbent level, a heat treatment area, a hot air blower, an oxygen molecular sieve and a VOC concentration detection device. , the hot air blows the oxygen generated by the oxygen molecular sieve into the adsorbent position, and the hot air makes the VOC released from the adsorbent, reacts with the oxygen in the heat treatment zone, and circulates in the sealed cavity until the VOC concentration is reduced to the set point. Set the value to discharge the gas in the sealed cavity.

Optionally, for the non-drainage miniaturized paint spraying treatment equipment, the sealed cavity further includes a powder collecting net, which is arranged at the inlet of the hot air blower.

Optionally, for the non-drainage miniaturized paint spraying treatment equipment, the filter screen module includes a non-woven filter screen and an automatic replacement device, the automatic replacement device includes two rotating shafts, and the non-woven filter screen moves with the two The rotation of each shaft moves, providing a clean non-woven filter on one side of the shaft, collecting the used non-woven filter on the other shaft, and the non-woven filter between the two shafts. The mesh is used to filter the particles.

Compared with the prior art, the non-drainage miniaturized spray paint treatment equipment provided by the present invention includes: a dry spray booth and a VOC treatment device, wherein the dry paint booth and the VOC treatment device are connected through a filter screen module; the VOC The treatment equipment includes a cavity, the cavity has an inlet and an outlet; a plurality of adsorbents are arranged in sequence in the cavity, a regeneration module is arranged in the cavity, and VOC enters from the inlet and passes through the plurality of adsorbents After the VOC is purified, the gas is discharged from the outlet. After the adsorption capacity of the adsorbent is reduced to the set value, it is transferred to the regeneration module for VOC release. The released VOC is decomposed by high temperature, and the adsorbent that has released the VOC is added to the adsorbent for adsorption. waiting in sequence. The utility model adopts the filter screen module to replace the traditional water curtain device in the pre-filtering link, completely adsorbs the particulate matter in the atomized paint film to the filter net, and performs automatic renewal operation, solves the treatment of the particulate matter, and avoids the use of a large amount of water resources , to save water resources and avoid secondary pollution. Special adsorbents are used in the purification of volatiles to centrally adsorb VOCs and use the built-in heat treatment system to convert VOCs into CO2 and H2O while completely regenerating the adsorbents. The purification effect reaches more than 90%, and there is no secondary in the entire purification process. The generation of hazardous waste can be recycled and reused, greatly improving the use efficiency and service life, and at the same time greatly reducing the use cost and energy consumption. In addition, the whole equipment can be customized according to the workload of the spraying operation, and there is no specific space area requirement, which is very suitable for the needs of miniaturization operations.

Description of drawings

Fig. 1 is the product schematic diagram of the miniaturized spray paint treatment equipment without drainage in one embodiment of the present utility model;

2 is a schematic diagram of the non-drainage miniaturized paint spraying treatment equipment in an embodiment of the present utility model when the adsorbent is replaced;

3 is a schematic diagram of a filter screen module in an embodiment of the present invention;

4 is a schematic structural diagram of a regeneration module in an embodiment of the present invention.

Detailed ways

The non-drainage miniaturized painting treatment equipment of the present invention will be described in more detail below with reference to the schematic diagrams, wherein the preferred embodiments of the present invention are shown. It should be understood that those skilled in the art can modify the present invention described here, and still The advantageous effects of the present invention are achieved. Therefore, the following description should be construed as widely known to those skilled in the art, rather than as a limitation of the present invention.

The invention is described in more detail by way of example in the following paragraphs with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that, the accompanying drawings are all in a very simplified form and in inaccurate scales, and are only used to facilitate and clearly assist the purpose of explaining the embodiments of the present invention.

FIG. 1 is a schematic diagram of a product of a miniaturized paint spraying treatment equipment without drainage according to an embodiment of the present invention.

Please refer to FIG. 1 , an embodiment of the present invention provides a non-drainage miniaturized spray paint treatment equipment, including: a dry spray booth 40 and a VOC treatment device, the dry paint booth 40 and the VOC treatment device pass through a filter screen module 30 is connected; the VOC treatment equipment includes a cavity 10, the cavity 10 has an inlet 101 and an outlet 102; a plurality of adsorbents 103 are sequentially arranged in the cavity 10, and the cavity 10 is provided with In the regeneration module 20, after VOC enters from the inlet and is purified by the plurality of adsorbents 103, the gas is discharged from the outlet 102. After the adsorption capacity of the adsorbent 103 is reduced to a set value, it is sent to the regeneration module 20. The VOC is released, the released VOC is decomposed by high temperature, and the adsorbent after releasing the VOC is added to the adsorption waiting sequence.

In the embodiment of the present invention, the VOCs include most of the volatile organic compounds, especially the organic compounds that are harmful to human health and can cause environmental pollution, such as those produced in painting operations.

A fan may be provided at the inlet 101 to directly inhale VOC mist and the like into the cavity 10 .

Figure 1 shows the situation in the production workshop. After the painting operation, VOC mist (including VOC, particles, etc.) is adsorbed into the cavity.

The number of the adsorbents 103 can be multiple, which is determined according to the actual VOC concentration and operation time.

In one embodiment, the plurality of adsorbents 103 adsorb VOCs in the gas successively. For example, in the case shown in FIG. 1 , after the VOCs pass through ABCDE in sequence, when they reach the F adsorbent, the content is already very low, for example, lower than 10%, or even less than 5%, the adsorbed gas is basically harmless and can be discharged.

Further, a VOC concentration detection device 104 can be arranged beside each adsorbent 103 to detect the VOC concentration in the actual gas.

The distance between the VOC concentration detection device 104 and the adsorbent 103 is not particularly limited, for example, it may be close to the adsorbent, or may be arranged at intervals.

In the embodiment of the present invention, the adsorbent 103 may include modified activated carbon and modified diatomaceous earth, and the type of adsorbent is selected according to the actual working conditions.

Please continue to refer to FIG. 1 , the cavity 10 is divided into a first area A1 and a second area A2 which are separated from each other, and the first area A1 is sequentially arranged with a plurality of adsorbents from the inlet 101 to the outlet 102 103; a plurality of spare adsorbents are arranged in the second area A2, and the regeneration module 20 is arranged in the second area A2.

Preferably, the size of the adsorbent 103 in the vertical direction of the first area A1 is substantially the same as the size in the vertical direction of the first area A1, thereby improving the adsorption efficiency.

The standby adsorbent can be replenished after the adsorbent in a first area enters the regeneration module 20. Specifically, for example, as shown in FIG. 2, the adsorbent A enters the regeneration module 20, and the adsorbents B-F advance in sequence. At one location, backup sorbent I is then replenished into the first zone, at the location before sorbent F. At the same time, adsorbents H and G also move to the previous position. After adsorbent A releases VOCs, they enter the standby adsorbent sequence.

In one embodiment, the non-drainage miniaturized painting treatment equipment further includes an adsorbent conveying device 105, when the adsorption capacity of the adsorbent A closest to the inlet decreases to a set value, the adsorption The agent delivery device 105 is activated to deliver a spare adsorbent I to the first area, and the other adsorbents in the first area A1 are replenished in turn toward the inlet 101, and the adsorbent A closest to the inlet 101 is delivered into the regeneration module 20.

In one embodiment, the adsorbent conveying device 105 may be a crawler belt, and an adsorbent holding device, such as a buckle, a hook, etc., is provided on the crawler belt, and the corresponding adsorbent 103 has corresponding clamping grooves and hanging rings.

In one embodiment, the adsorbent conveying device 105 can be manually operated, for example, there is a rocker outside the cavity, and one end of the rocker has a gear, which is engaged with the crawler, so that the crawler is driven to rotate after shaking the rocker, so as to realize the transport of the adsorbent. .

In one embodiment, the adsorbent conveying device 105 can be operated automatically, for example, the non-drainage miniaturized paint treatment equipment further includes a controller, such as a CPU, or a computer, when the VOC concentration detection device 104 detects that the When the adsorbent at the inlet is saturated, a signal is transmitted to the controller, and the controller makes the motor that drives the crawler rotate to realize the transfer of the adsorbent.

The design of the motor driving the crawler to rotate is well known to those skilled in the art, and its specific structure will not be described here.

Further, an isolation door (not shown) is provided between the first area A1 and the second area A2, and the isolation door is opened when the adsorbent is conveyed.

The isolation door may be controlled by the controller.

Further, the pressure in the second area A2 may be higher than the pressure in the first area A1, so as to prevent the gas in the first area from entering when the isolation door is opened. For example, a blower can be provided in the second region, which is activated when the separating door is opened.

Specifically, in the first area A1, the VOC concentration detection device 104 is provided next to each of the adsorbents 103 .

As shown in FIG. 3, in the embodiment of the present invention, the filter screen module 30 includes a non-woven filter screen and an automatic replacement device. Specifically, the automatic replacement device includes two rotating shafts 301, and the non-woven filter screen It moves with the rotation of the two rotating shafts 301 . For example, on the rotating shaft 301 on one side is a clean non-woven filter 303, on the rotating shaft 301 on the other side is a used non-woven filter 304, and the non-woven filter between the two rotating shafts 301 The mesh acts as a filter for particles, ie the work area. An isolation layer 307 is provided between the working area and the rotating shaft 301 .

Further, a supporting wire mesh can be arranged between the two isolation layers 307 to support the non-woven filter mesh 303 .

The casing of the filter screen module along the axis of the inlet has a plurality of slits, so that the gas and mist containing VOC can enter.

Further, a wind speed detection device is installed on the side close to the inlet. When it is detected that the wind speed decreases to the set value, it indicates that the non-woven filter has absorbed more particles, and then the wind speed detection device will feed back the information to the control. The controller controls the rotation of the shaft to realize the replacement of the non-woven filter.

4, for the non-drainage miniaturized painting treatment equipment, the regeneration module 20 includes a sealed cavity 201, and the sealed cavity 201 is provided with an adsorbent position, a heat treatment zone 202, a hot air blower 203, The oxygen molecular sieve 205 and the VOC concentration detection device 207, the hot air blower 203 blows the oxygen generated by the oxygen molecular sieve 205 into the adsorbent position, and the hot air makes the VOC released from the adsorbent 103, and reacts with the oxygen in the heat treatment zone 202 to form CO2 and H2O, and circulate in the sealed cavity 201 until the VOC concentration is reduced to a set value, and the gas in the sealed cavity 201 is discharged.

In one embodiment, the sealed cavity 201 has a shield door, which may correspond to an isolation door (near the entrance 101 ) between the first area A1 and the second area A2, so that the adsorbent 103 delivered to the adsorbent site.

In one embodiment, the casing of the sealed cavity 201 is made of a heat insulating material, which can maintain a high temperature in the cavity. For example, the circulation temperature is between 400°C and 700°C. Further, the temperature of the heat treatment zone 202 is between 1200°C and 1400°C. °C.

In one embodiment, the heat treatment zone 202 may have a plurality of electric heating wires to achieve electrical heating to decompose VOCs.

The adsorbent can be selected as an adsorbent with a temperature resistance below 800°C, so that when the temperature is above 120°C, VOC can be released without damaging the adsorbent as much as possible.

Further, the sealed cavity 201 further includes a powder collecting net 204 disposed at the inlet of the hot air blower 203 . in order to collect the material shed from the sorbent. Generally, there is less sorbent shedding and will not affect the recycling of the sorbent.

Further, a powder collecting device may also be provided on one side of the oxygen molecular sieve 205 .

In the embodiment of the present invention, the regeneration device can make the adsorbent substantially completely release VOC.

When the VOC concentration detection device 207 detects that the VOC concentration of the circulating gas is not changing and is lower than the set value, the exhaust valve 209 is opened to discharge the gas that has not polluted the environment. When discharging, the gas can be cooled by a cooling device 208 , such as a water cooling device, and then the gas is discharged through the exhaust valve 209 .

Compared with traditional catalytic combustion, the decomposition of VOC in the regeneration module of the utility model has no other consumables except oxygen. Traditional combustion requires the use of a large number of combustion agents and catalysts, which greatly saves the use cost.

Compared with the prior art, the non-drainage miniaturized spray paint treatment equipment provided by the present invention includes: a dry spray booth and a VOC treatment device, wherein the dry paint booth and the VOC treatment device are connected through a filter screen module; the VOC The treatment equipment includes a cavity, the cavity has an inlet and an outlet; a plurality of adsorbents are arranged in sequence in the cavity, a regeneration module is arranged in the cavity, and VOC enters from the inlet and passes through the plurality of adsorbents After the odorant is purified, the gas is discharged from the outlet. After the adsorption capacity of the adsorbent is reduced to the set value, it is sent to the regeneration module for VOC release. The released VOC is decomposed by high temperature, and the adsorbent that has released the VOC is added to the adsorbent for adsorption. waiting in sequence. The utility model adopts the filter screen module to replace the traditional water curtain device in the pre-filtering link, completely adsorbs the particles in the atomized paint film to the filter screen, and performs automatic replacement operation to solve the treatment of the particles. Special adsorbents are used in the purification of volatiles to centrally adsorb VOCs and use the built-in heat treatment system to convert VOCs into CO2 and H2O while completely regenerating the adsorbents. The purification effect reaches more than 90%, and there is no secondary pollution in the entire purification process. The generation of hazardous waste can be recycled and reused, greatly improving the use efficiency and service life, while greatly reducing the use cost and energy consumption. In addition, the whole equipment can be customized according to the workload of the spraying operation, and there is no specific space area requirement, which is very suitable for the needs of miniaturization operations.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalents, the present utility model is also intended to include these modifications and variations.

Claims (8)

1. A drainless miniaturized paint spraying processing apparatus, comprising: the system comprises a dry paint spraying chamber and VOC treatment equipment, wherein the dry paint spraying chamber is connected with the VOC treatment equipment through a filter screen module; the VOC remediation device comprises a chamber having an inlet and an outlet; a plurality of adsorbents are arranged in the cavity in sequence, a regeneration module is arranged in the cavity, VOC enters from an inlet and passes through the plurality of adsorbents after being purified, gas is discharged from an outlet, the adsorption capacity of the adsorbents is reduced to a set value, namely, the adsorbent is conveyed to the regeneration module to release the VOC, the released VOC is decomposed at high temperature, and the adsorbent which releases the VOC is added into an adsorption waiting sequence.

2. The drainless miniaturized paint spraying apparatus according to claim 1, wherein the chamber is divided into a first area and a second area which are separated from each other, the first area being sequentially arranged with a plurality of adsorbents from the inlet to the outlet; the second zone is lined with a plurality of spare sorbents and the regeneration module is disposed in the second zone.

3. The drainless miniaturized paint spraying processing apparatus according to claim 2, further comprising an adsorbent transferring means which is activated to transfer one spare adsorbent to a first area after an adsorption capacity of the adsorbent closest to the inlet is decreased to a set value, and the adsorbents of other first areas are sequentially replenished toward the inlet, and the adsorbent closest to the inlet is transferred to the regeneration module.

4. The drainless miniaturized paint spraying apparatus of claim 2, wherein a separation door is provided between the first area and the second area, and the separation door is opened when the adsorbent transfer is performed.

5. The drainless miniaturized paint spraying apparatus according to claim 2, wherein a VOC concentration detecting device is provided beside each of the adsorbents in the first area.

6. The drainless miniaturized paint spraying processing equipment according to claim 1, wherein the regeneration module comprises a sealed cavity, the sealed cavity is provided with an adsorbent position, a heat treatment area, a hot air blower, an oxygen molecular sieve and a VOC concentration detection device, the hot air blower blows oxygen generated by the oxygen molecular sieve into the adsorbent position, and the VOC is released from the adsorbent by hot air, reacts with the oxygen in the heat treatment area, and circulates in the sealed cavity until the VOC concentration is reduced to a set value, so that gas in the sealed cavity is discharged.

7. The drainless miniaturized paint spraying apparatus of claim 6 further comprising a powder collecting net in the sealed chamber, disposed at an inlet of the air heater.

8. The drainless miniaturized paint spraying apparatus according to claim 1, wherein the filter screen module includes a non-woven fabric filter screen and an automatic replacing device, the automatic replacing device includes two rotating shafts, the non-woven fabric filter screen moves along with the rotation of the two rotating shafts, a clean non-woven fabric filter screen is provided on one rotating shaft, a used non-woven fabric filter screen is collected on the other rotating shaft, and the non-woven fabric filter screen between the two rotating shafts is used as filtering particles.

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