阅读说明：本技术 一种带废气回收系统的自动喷房 (Automatic spraying room with waste gas recovery system ) 是由 秦炜 于 2019-10-14 设计创作，主要内容包括：本发明公开了一种带废气回收系统的自动喷房,包括喷漆房体、用于向所述喷漆房体内输送气体的气室、设置在所述喷漆房体底部的集漆盘、与所述喷漆房体连通的吸风装置以及废气回收系统；其中,所述喷漆房体和所述吸风装置之间设有用于供所述喷漆房体和所述吸风装置连通的吸风口,所述吸风口位于所述集漆盘的上方；所述废气回收系统包括第一过滤装置、造粒装置、第二过滤装置,所述第一过滤装置与所述吸风装置的输出端连通,所述造粒装置与所述第一过滤装置的输出端连通,所述第二过滤装置的输入端与所述造粒装置连通,所述第二过滤装置的输出端与所述气室连通。本方案具有大量节省固态滤材、极大降低自动喷房排量等优点。(The invention discloses an automatic spray booth with a waste gas recovery system, which comprises a spray booth body, an air chamber for conveying gas into the spray booth body, a paint collecting disc arranged at the bottom of the spray booth body, an air suction device communicated with the spray booth body and a waste gas recovery system, wherein the air chamber is used for conveying gas into the spray booth body; an air suction opening for communicating the paint spraying room body with the air suction device is formed between the paint spraying room body and the air suction device, and the air suction opening is positioned above the paint collecting disc; the waste gas recovery system comprises a first filtering device, a granulating device and a second filtering device, wherein the first filtering device is communicated with the output end of the air suction device, the granulating device is communicated with the output end of the first filtering device, the input end of the second filtering device is communicated with the granulating device, and the output end of the second filtering device is communicated with the air chamber. This scheme has a large amount of solid-state filter media of saving, greatly reduces and spouts advantage such as room discharge capacity automatically.)

1. An automatic spray booth with a waste gas recovery system is characterized by comprising a spray booth body, an air chamber for conveying gas into the spray booth body, a paint collecting disc arranged at the bottom of the spray booth body, an air suction device communicated with the spray booth body and a waste gas recovery system; an air suction opening for communicating the paint spraying room body with the air suction device is formed between the paint spraying room body and the air suction device, and the air suction opening is positioned above the paint collecting disc; the waste gas recovery system comprises a first filtering device, a granulating device and a second filtering device, wherein the first filtering device is communicated with the output end of the air suction device, the granulating device is communicated with the output end of the first filtering device, the input end of the second filtering device is communicated with the granulating device, and the output end of the second filtering device is communicated with the air chamber.

2. The automated spray booth of claim 1, wherein said air draft apparatus is disposed circumferentially around said spray booth body.

3. The automatic spray booth of claim 2, wherein the air suction device comprises a top plate, a bottom plate and side plates, wherein the top plate and the bottom plate are respectively connected to two ends of the side plates, one side of the top plate, which is far away from the side plates, is connected with the spray booth body, and a box body is enclosed among the top plate, the bottom plate and the side plates.

4. The automated paint spray booth according to claim 3, wherein said floor panel is not in contact with said paint spray booth body, and said paint collection tray is disposed on said floor panel and spaced from said paint spray booth body such that said air suction opening is formed between said floor panel and a bottom of said paint spray booth body.

5. The automatic spray booth of claim 4, wherein said air suction device further comprises a partition plate disposed between said top plate and said bottom plate, wherein two sides of said partition plate are connected to said side plate and said spray booth body, respectively, and said partition plate is provided with a plurality of through holes.

6. The automated spray booth of claim 3, wherein said side panel has a plurality of windows.

7. The automatic spray booth of claim 1, wherein said paint tray is arc-shaped in cross-section and is tilted in a direction toward said booth body.

8. The automatic spray booth of claim 1, wherein said spray booth body has a channel on an inner wall thereof, said channel having a flow guide tube.

9. The automatic spray booth of claim 1, wherein said first filtration device comprises a channel for exhaust gas to pass through, an input end of said channel being in communication with said suction device and an output end of said channel being in communication with said pelletizing device.

10. The automated spray booth of claim 9, wherein said channel increases in cross-sectional area from an inlet to an outlet of said channel.

Technical Field

The invention relates to the technical field of coating processes, in particular to an automatic spraying room with a waste gas recovery system.

Background

The coating process is a widely used construction process and is widely applied to the industries of machinery, electronic equipment, automobiles, ships, household appliances, furniture and the like. Whereas spray booths for spray painting are common equipment in paint shops. During the painting process, the paint is atomized into particles under the action of high pressure, wherein part of the film-forming substances are attached to the surface of the object to be painted, and part of the film-forming substances are dissipated to the air and the ground along with the air flow to form paint mist particles taking the film-forming substances as the main components. Meanwhile, the diluent in the paint is not attached to the surface of a painted object along with a film-forming substance, but is released in the process of painting and curing to form painting waste gas, and the content of the paint mist in the waste gas is large.

Traditional automatic room of spouting, generally will collect the lacquer tray setting in the bottom of spouting the room, set up the wind channel of inhaling again above collecting the lacquer tray, spout and set up the inlet scoop that corresponds with the wind channel of inhaling in the room main part, place the coconut palm filter screen on the inlet scoop and filter the coating cloud in order to getting into the waste gas in the wind channel of inhaling, waste gas passes through and inhales in the active carbon exhaust-gas treatment system of back end behind the wind channel. By adopting the scheme, the method has the following defects:

1. as more paint mist is remained on the coconut palm filter screen, the coconut palm filter screen needs to be frequently and periodically replaced, and solid waste is generated.

2. The filtration grade of coconut palm filter screen is lower, consequently, has a large amount of coating cloud granules along with during waste gas gets into the wind channel of inhaling, and the wind channel is located the bottom of spouting the room moreover, leads to inhaling and can pile up a large amount of paints in the wind channel.

3. Because the paint mist content in the waste gas entering the air suction duct is relatively high, a relatively large burden is brought to the active carbon waste gas treatment system at the rear end, and the operation cost of the active carbon waste gas treatment system is high.

Disclosure of Invention

In order to overcome the defects in the prior art, the embodiment of the invention provides an automatic spraying room with an exhaust gas recovery system, which is used for solving the problems.

The embodiment of the application discloses: an automatic spray booth with a waste gas recovery system comprises a spray booth body, an air chamber for conveying gas into the spray booth body, a paint collecting disc arranged at the bottom of the spray booth body, an air suction device communicated with the spray booth body and a waste gas recovery system; an air suction opening for communicating the paint spraying room body with the air suction device is formed between the paint spraying room body and the air suction device, and the air suction opening is positioned above the paint collecting disc; the waste gas recovery system comprises a first filtering device, a granulating device and a second filtering device, wherein the first filtering device is communicated with the output end of the air suction device, the granulating device is communicated with the output end of the first filtering device, the input end of the second filtering device is communicated with the granulating device, and the output end of the second filtering device is communicated with the air chamber.

Specifically, the air suction device encircles the circumference setting of the spray booth body.

Specifically, the device that induced drafts includes roof, bottom plate, curb plate, wherein the roof with the bottom plate is connected respectively the both ends of curb plate, the roof is kept away from one side of curb plate with the room body coupling that sprays paint, enclose between roof, bottom plate and the curb plate and constitute a box.

Specifically, the bottom plate with contactless between the room body of spraying paint, the collection lacquer tray sets up on the bottom plate and with the room body interval of spraying paint sets up, thereby makes the bottom plate with form between the bottom of the room body of spraying paint the inlet scoop.

Specifically, the device that induced drafts still includes the baffle, the baffle sets up the roof with between the bottom plate, the both sides of baffle respectively with the curb plate with the room body coupling sprays paint, set up a plurality of through-holes on the baffle.

Specifically, a plurality of windows are arranged on the side plate.

Specifically, the cross-section of collection lacquer tray is the arcuation, just the orientation all around of collection lacquer tray the direction perk of the room body of spraying paint.

Specifically, be equipped with the slot on the inner wall of the room body of spraying paint, be equipped with the honeycomb duct on the slot.

Specifically, first filter equipment includes the passageway that is used for supplying waste gas to pass through, the input of passageway with the device intercommunication that induced drafts, the output of passageway with prilling granulator intercommunication.

In particular, the cross-sectional area of the channel increases in a direction from the inlet to the outlet of the channel.

The invention has at least the following beneficial effects:

1. the adoption sets up the inlet scoop in the scheme that is higher than the position of collection lacquer tray, can avoid the waste lacquer (a large amount of large granule coating cloud subsides the back and forms waste lacquer) among the collection lacquer tray to get into the device that induced drafts (to the large granule coating cloud that has subsided and gathered, unless need very big wind-force, during difficult upwards inhaled the device that induced drafts), consequently, can need not set up solid filter media in inlet scoop department, saved the filter media in a large number.

2. The waste gas of the automatic spraying room can be recycled after being recycled, and the waste gas discharge capacity can be greatly reduced, so that the burden of a waste gas treatment system at the rear section can be reduced, and the cost of waste gas treatment is further reduced; in addition, after the recycled gas is input into the spray booth body, the fresh air quantity required for maintaining the air pressure in the spray booth body can be reduced, so that the operation cost of the automatic spray booth is further reduced.

3. Because when through the waste gas recovery system, a large amount of coating cloud have been got rid of by first filter equipment, the second filter equipment among the waste gas recovery system in the waste gas, consequently, when this automatic spray booth exhaust waste gas got into the paint removal system of back end, the coating cloud that the waste gas brought into in the paint removal system is very little, can alleviate the burden of equipment among the paint removal system, the maintenance cycle of extension equipment, reduction maintenance frequency.

In order to make the aforementioned and other objects, features and advantages of the invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an automatic spray booth with an exhaust gas recovery system according to an embodiment of the present invention;

FIG. 2 is a front view of an automatic spray booth with an exhaust gas recovery system according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken at B-B of FIG. 3;

fig. 5 is a schematic view of the structure of the channel in the embodiment of the present invention.

Reference numerals of the above figures: 1. painting the house body; 2. an air chamber; 3. collecting a paint tray; 4. an air suction device; 41. a top plate; 42. a base plate; 43. a side plate; 431. a window; 44. a partition plate; 441. a through hole; 5. a first filtering device; 51. a channel; 511. an inlet; 512. an outlet; 6. a granulation device; 7. a second filtering device; 71. a separation column; 72. a collection box; 8. a trench; 81. a flow guide pipe; 9. a fan.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, the automatic spray booth with an exhaust gas recovery system according to the present embodiment includes a spray booth body 1, an air chamber 2 for supplying air into the spray booth body 1, a paint collecting tray 3 disposed at the bottom of the spray booth body 1, an air suction device 4 communicating with the spray booth body 1, and an exhaust gas recovery system. Wherein, as shown in the important reference of fig. 3, an air suction opening for communicating the paint spraying room body 1 and the air suction device 4 is arranged between the paint spraying room body 1 and the air suction device 4, and the air suction opening is positioned above the paint collecting disc 3. The waste gas recovery system comprises a first filtering device 5, a granulating device 6 and a second filtering device 7, wherein the first filtering device 5 is communicated with the output end of the air suction device 4, the granulating device 6 is communicated with the output end of the first filtering device 5, the output end of the second filtering device 7 is communicated with the granulating device 6, and the output end of the second filtering device 7 is communicated with the air chamber 2.

Specifically, during operation in the automatic spray booth, the exhaust gas generated therefrom usually contains large particle paint mist (particle size of about 5 μm or more) and small particle paint mist (particle size of about 0.3 to 5 μm). Under the effect of coating cloud dead weight and the device 4 that induced drafts, the coating cloud of bigger granule can subside on album lacquer dish 3, and the coating cloud of less granule can be along with during waste gas gets into the device 4 that induced drafts. The air suction device 4 is substantially communicated with the bottom of the painting room body 1, but the air suction opening of the air suction device 4 is higher than the paint collecting tray 3 to prevent the exhaust gas from blowing the exhaust gas on the paint collecting tray 3 into the air suction device 4. The first filtering device 5 can carry out preliminary filtering on the waste gas from the air suction device 4, so that large-particle paint mist still carried into the air suction device 4 by the waste gas is filtered; the granulating device 6 is used for receiving the waste gas filtered by the first filtering device 5 and granulating the small-particle paint mist in the waste gas to form large-particle paint mist; subsequently, in second filter equipment 7, the coating cloud after the granulation separates with waste gas once more, thereby make the cleanliness factor of waste gas (the cleanliness factor in this implementation indicates that the coating cloud etc. in the waste gas have the granule impurity of certain particle diameter by filterable degree) can reach the gas cleanliness factor requirement in the room body 1 that sprays paint, thereby make waste gas after waste gas recovery system filters can directly flow back in air chamber 2, and then flow back again to the room body 1 that sprays paint in with recycle, reduce the emission in this automatic room that spouts, also can reduce this automatic fresh air demand who spouts the room.

By means of the structure, the automatic spraying room in the embodiment has the following advantages:

1. the adoption sets up the inlet scoop in the scheme that is higher than collection lacquer tray 3's position, can avoid collecting in the lacquer tray 3 waste lacquer (a large amount of large granule coating cloud subsides the back and form waste lacquer) get into in the device 4 that induced drafts (to the large granule coating cloud that has subsided and gathered, unless need very big wind-force, otherwise hardly by upwards inhaling in the device 4 that induced drafts), consequently, can need not set up solid filter media in inlet scoop department, saved the filter media in a large number.

2. The waste gas of the automatic spraying room can be recycled after being recycled, and the waste gas discharge capacity can be greatly reduced, so that the burden of a waste gas treatment system at the rear section can be reduced, and the cost of waste gas treatment is further reduced; in addition, since the amount of fresh air required to maintain the air pressure in the booth body 1 can be reduced after the recycled air is introduced into the booth body 1, the operating cost of the automatic booth can be further reduced.

3. Because when passing through the waste gas recovery system, a large amount of paint mist in the waste gas has been got rid of by first filter equipment 5, second filter equipment 7 among the waste gas recovery system, consequently, when this automatic spray booth exhaust waste gas got into the paint removal system of back end, the waste gas brought the paint mist in the paint removal system very little, can alleviate the burden of equipment among the paint removal system, the maintenance cycle of extension equipment, reduction maintenance frequency.

Specifically, as shown in fig. 1, the automatic spray booth in this embodiment may further include a fan 9, an input end of the fan 9 is communicated with an output end of the second filtering device 7, an output end of the fan 9 is communicated with the air chamber 2, and the fan 9 may provide power for the whole exhaust gas recovery system.

Specifically, as shown in fig. 1 and 2, the air suction device 4 is disposed around the circumference of the booth body 1. Preferably, the painting room body 1 can be substantially in a major arc shape, a conveying chain (not shown in the figure) for conveying workpieces is arranged in the painting room body 1 along the circumferential direction of the conveying chain, the conveying chain and the painting room body 1 are coaxially arranged, and the spray gun can be arranged at the center of the circle of the painting room body 1. Adopt this kind of structure setting, can be so that a plurality of work pieces get into the room of spraying paint 1 in and carry out the spraying simultaneously, the work piece is exported after the round room of spraying paint 1 roughly moves the round, and the distance of spray gun and each work piece equals, ensures the homogeneity of spraying.

Further, as shown in fig. 2 and 3, the air suction device 4 includes a top plate 41, a bottom plate 42, and side plates 43. Wherein, curb plate 43 can be parallel with the lateral wall of the painting room body 1, and roof 41 and bottom plate 42 connect respectively at the both ends of curb plate 43, and is preferred, and roof 41 and bottom plate 42 can be parallel, and the bottom plate 42 is kept away from the one side of curb plate 43 and is connected with the painting room body 1, encloses between roof 41, bottom plate 42 and the curb plate 43 and forms a box that has certain inner chamber. Furthermore, referring to fig. 3, the bottom plate 42 is not in contact with the paint spraying room body 1, the paint collecting tray 3 is disposed on the bottom plate 42, and the paint collecting tray 3 is spaced from the paint spraying room body 1, in other words, the paint collecting tray 3 is not in contact with the paint spraying room body 1, so that an air suction opening is formed between the bottom plate 42 and the bottom of the paint spraying room body 1. Specifically, the base plate 42 may be laid flat beneath the paint spray booth body 1, the base plate 42 being shaped to substantially follow the cross-sectional area of the paint spray booth body 1, and the base plate 42 having a larger area than the cross-sectional area of the paint spray booth body 1. Preferably, the paint-collecting tray 3 is also laid flat under the booth body 1 with an area slightly smaller than the area of the bottom plate 42, but preferably, the area of the paint-collecting tray 3 is larger than the cross-sectional area of the booth body 1.

Adopt above-mentioned structure, under the effect of the device 4 that induced drafts, the waste gas downward motion in the room body 1 that sprays paint, the wind-force of the department of induced drafts can set up in a suitable within range for large granule coating cloud in the waste gas can sink to the collection lacquer dish 3 under the dead weight effect, ensures simultaneously that the large granule coating cloud on the collection lacquer dish 3 can not upwards be inhaled in the device 4 that induced drafts.

Specifically, as shown in fig. 2 to 4, the air suction device 4 further includes a partition plate 44, and the partition plate 44 is disposed between the top plate 41 and the bottom plate 42. The two sides of the partition 44 are respectively connected with the side plate 43 and the side wall of the painting room body 1, and a plurality of through holes 441 are formed on the partition 44. The partition 44 may substantially divide the air suction device 4 into upper and lower stages, and the input end of the first filter device 5 is connected to the upper stage of the air suction device 4. Adopt above-mentioned scheme, from the inspiratory waste gas of suction opening through-hole 441 entering suction device 4's upper strata, waste gas receives the extrusion when through-hole 441 for the coating cloud in the waste gas carries out simple gathering, thereby forms the coating cloud of great granule, so that more large granule coating clouds can be filtered in first filter equipment 5.

Specifically, as shown in fig. 1 and 2, a plurality of windows 431 are provided on the side plate 43 of the air suction device 4, and a movable door (not shown) that can be opened and closed is provided on each of the plurality of windows 431. When the automatic spray booth works, the sliding door is closed, and when the automatic spray booth needs maintenance, the sliding door can be opened to clean and maintain the air suction device 4, so that the automatic spray booth is very convenient and fast.

Specifically, as shown in fig. 2 to 4, a groove 8 for collecting waste paint may be further provided on the inner wall of the painting booth body 1, and preferably, the groove 8 is located at the bottom of the inner wall of the painting booth body 1. More specifically, when the spray gun sprays a workpiece, a part of paint is sprayed on the workpiece, paint (commonly called overflowed paint mist) which is not attached to the surface of the workpiece is sprayed on the inner wall of the paint spray booth body 1, and then the overflowed paint mist flows downward along the inner wall of the paint spray booth body 1 under the action of its own weight. When the inner wall of the painting room body 1 is provided with the groove 8, the overflowing paint mist can flow into the groove 8, so that the collection of the waste paint is convenient. Further, can also be equipped with honeycomb duct 81 on the slot 8, through honeycomb duct 81, can be with the interior waste paint drainage of slot 8 to set up in the outside container that is used for holding waste paint of the room body 1 that sprays paint. Preferably, the height of the bottom of the channel 8 decreases in the direction towards the flow-guide tube 81, facilitating the flow of the collected paint overspray. Adopt above-mentioned scheme, the excessive paint spray mist of excessive paint spray mist is piled up in the room body of avoiding spraying paint 1 in the room body of can in time discharging room body 1 that sprays paint, can reduce the clean maintenance frequency in the room body of spraying paint 1.

Specifically, as shown in fig. 2 and 3, the cross section of the paint collecting tray 3 is arc-shaped, and the periphery of the paint collecting tray 3 is tilted toward the direction of the paint spray booth body 1. In other words, the paint collecting tray 3 is low in the middle and high in the periphery. By adopting the scheme, the waste paint on the paint collecting tray 3 can be gathered towards the center, and the waste paint on the paint collecting tray 3 can be conveniently treated.

As shown in fig. 5, the first filter device 5 includes a passage 51 for passing exhaust gas. The input end of the channel 51 is communicated with the suction device 4, and the output end of the channel 51 is communicated with the granulating device 6. Preferably, after the exhaust gas enters the passage 51, the flow rate of the exhaust gas can be changed to increase the sedimentation amount of the paint mist in the exhaust gas in the passage 51, and increase the filtering effect of the first filtering device 5 on the paint mist in the exhaust gas. More specifically, the cross-sectional area of the passage 51 increases from the inlet 511 to the outlet 512 of the passage, so that the flow velocity of the exhaust gas after entering the passage 51 may suddenly decrease, and the flow velocity of the exhaust gas may decrease along the direction from the inlet 511 to the outlet 512 of the passage 51, so that the residence time of the exhaust gas in the passage 31 may be prolonged, and the large-particle paint mist in the exhaust gas may be deposited on the bottom of the passage 51. Further, the channel 51 may be in a surrounding shape, or the channel 51 may be in a volute shape, so that a movement track of the exhaust gas in the channel 51 may be extended, thereby extending a retention time of the exhaust gas in the channel 51, and simultaneously saving a space required for arranging the channel 51.

Adopt above-mentioned scheme, can realize the subsidence of large granule coating cloud in the waste gas through the velocity of flow that changes the waste gas in the first filter equipment 5 in this embodiment rather than through being provided with the filter media to the realization is filtered large granule coating cloud from the waste gas. Therefore, the first filtering device 5 in this embodiment can save consumables such as filtering material.

Specifically, as shown in fig. 1, the granulating device 6 includes a venturi tube. In other words, the granulating device 6 can utilize the principle of a venturi flowmeter to extrude the small paint mist in the exhaust gas passing through it rapidly into a larger paint mist, so that the small paint mist in the exhaust gas is condensed to exist in a larger particle state, so that the paint mist is filtered in the subsequent second filtering device 7. Preferably, to increase the degree of squeezing of the small particle paint mist in the exhaust gas in the venturi, the velocity of the wind at the inlet of the venturi may be greater than the velocity of the wind at the outlet 512 of the passage 51 of the first filter device 5, but the velocity of the wind in the venturi is prevented from being so great as to suck the large particle paint mist settled on the inner wall of the passage 51 into the venturi.

Specifically, as shown in fig. 1, the second filtering device 7 includes a separation tower 71 communicating with the granulating device 6 and the air chamber 2, respectively, and a collecting tank 72 disposed below the separation tower 71. When the granulated exhaust gas passes through the second filtering device 7, the large-particle paint mist in the exhaust gas is easy to be subjected to centrifugal force in the separating tower 71 and is settled in the collecting box 72 below the separating tower 71, so that the exhaust gas and the paint mist are separated again. At this time, the exhaust gas after the secondary separation contains substantially no paint mist particles. Adopt above-mentioned scheme, second filter equipment 7 in this embodiment can realize the subsidence of large granule coating cloud in the waste gas after the granulation through wind-force rather than through being provided with the filter media to the realization is filtered large granule coating cloud from waste gas. Therefore, consumables such as filter materials can be further saved.

The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.