CN106984480A - A kind of paint spray booth and discharge duct - Google Patents

Abstract

The invention discloses an exhaust pipe, which solves the problem that paint mist will be adsorbed on the inner wall of the exhaust pipe during the process of passing through the exhaust pipe, thereby causing a thick layer of paint to accumulate on the inner wall of the exhaust pipe. The problem that it will be scrapped in a few months, the main point of its technical solution is that a water curtain generating device is arranged on the inner wall of the pipeline body, and the water curtain generating device forms a water curtain on the inner wall of the pipeline body, and a water curtain is formed on the inner wall of the pipeline body The bottom is equipped with a water collecting device, so that the paint mist will not adhere to the inner wall of the exhaust pipe during the process of passing through the exhaust pipe, and the water in the water curtain is collected through the water collecting device at the bottom, effectively ensuring Improve the smoothness of the ventilation in the exhaust pipe.

Description

A spray booth and exhaust pipe

technical field

The invention relates to painting equipment, in particular to a painting booth and an exhaust pipe of the painting booth.

Background technique

In the spraying industry, the spraying treatment of workpieces is usually carried out in a relatively closed room, which is called a spray booth. The spray booth is an equipment that provides a special environment for painting operations, which can meet the requirements of the painting operation on temperature, humidity, illuminance, and air cleanliness; it can limit and treat the paint mist and organic waste gas generated during the painting operation, which is environmentally friendly. type of coating equipment. According to the classification of paint mist treatment, the spray booth can be divided into two categories: dry spray booth and wet spray booth (water treatment). Among them, the dry spray booth is widely used because of its simple structure, energy saving and environmental protection.

The operation process of the painting machine is as follows: when painting, the blower and exhaust fan are started at the same time, and the outdoor fresh air enters the blower unit through the air inlet filter through the air inlet, and then the blower unit sends the processed air to the static pressure chamber at the top of the spray booth After the paint is sprayed, it is discharged from the exhaust pipe to the sewage treatment device for further treatment. For example, the patent application number 200620059112.5 discloses that water curtain generators are installed in the walls of the spray booth to form a water curtain on the wall surface, which can not only effectively absorb excess paint mist, but also effectively avoid paint mist. Attaches to the wall surface. Although the above-mentioned water curtain generating device solves the problem of paint mist inside the spray booth, there are still residual paint mist that needs to be transported to the pollution gas treatment device through the exhaust pipe for final treatment, but the paint mist passes through the exhaust pipe. During the process, it will be adsorbed on the inner wall of the exhaust pipe, which will cause a thick layer of paint to accumulate on the inner wall of the exhaust pipe. It will be scrapped within a few months. Repairs or installation of new exhaust pipes will cost a lot of maintenance. high.

Contents of the invention

The first object of the present invention is to provide an exhaust duct in which paint mist does not adhere to the inner wall.

In order to solve the above problems, the present invention provides an exhaust pipe, including a pipe body, a water curtain generating device is arranged on the inner wall of the pipe body, and a water curtain is formed on the inner wall of the pipe body by the water curtain generating device. The bottom of the pipe body is provided with a water collecting device.

By adopting the above-mentioned technical scheme, by installing a water curtain generating device on the inner wall of the pipeline, the water curtain can be formed on the inner wall, and the paint mist will not adhere to the inner wall of the exhaust pipeline during the process of passing through the exhaust pipeline. The water collecting device at the bottom collects the water in the water curtain, effectively ensuring the smoothness of the ventilation in the exhaust pipe.

As a further improvement of the present invention, the pipeline body includes a vertical section and a transverse section, and the transverse section is connected to the sewage treatment device.

By adopting the above technical scheme, the pipeline body is divided into a vertical section and a horizontal section. The vertical section is used to lead out the paint mist, and the horizontal section is conveniently connected with the sewage gas treatment device, so that the gas with paint mist can pass into the sewage gas. The final processing takes place in the processing unit.

As a further improvement of the present invention, the pipe body is a square pipe, the water curtain generating device includes an overflow tank formed at the top of the vertical section, and a drainage pipe is arranged in the overflow tank; An overflow tank is formed above the side wall of the section, and a drainage pipe is arranged in the overflow tank.

By adopting the above technical scheme, the pipeline is set as a square pipeline, and an overflow tank is arranged at the top of the vertical section, and a drainage pipeline is arranged in the overflow tank, and water flows out from the inside of the drainage pipeline to the overflow tank and flows from the overflow tank. After the launder is full, it can flow out along the direction of the vertical section in the form of a water curtain to protect the vertical section. Moreover, an overflow groove is also arranged on the side wall of the transverse section, and a drainage pipe is arranged in the overflow groove, which can also protect the side wall of the transverse section.

As a further improvement of the present invention, the middle part of the top wall of the transverse section is provided with a water spray pipe for spraying water to both sides, and the inner side of the top wall of the transverse section is covered with an anti-paint film.

By adopting the above technical scheme, by setting a water spray pipe in the middle of the top wall, water can be sprayed to both sides, and the paint mist attached to the inside of the top wall can be washed away during the water spray process, and further covered with The anti-paint film further plays the role of anti-paint.

As a further improvement of the present invention, the top wall of the transverse section and the transverse section are detachable.

By adopting the above-mentioned technical scheme, by setting it as a detachable setting, since the top wall is only formed as a water spraying method, a water curtain cannot be formed. On the basis of the water spraying and anti-paint film, the horizontal section is set Being detachable, the transverse section can be disassembled separately, the transverse section can be cleaned, and the interior of the transverse section can also be cleaned.

As a further improvement of the present invention, the pipeline body is a cylindrical pipeline, and the water curtain generating device includes an overflow tank formed at the top of the vertical section, and a drainage pipeline is arranged in the overflow tank; The top of the transverse section is arranged with a water spray pipe that sprays water toward the two side walls, and an arc-shaped guide plate that is adapted to the shape of the inner wall of the pipe body is arranged below the water spray pipe. A water curtain gap is formed between the shaped guide plate and the transverse section.

By adopting the above-mentioned technical scheme, by setting it as a cylindrical pipe, an overflow tank is provided at the vertical section, and a drainage pipe is arranged in the overflow tank, and the water flows out from the inside of the drainage pipe to the overflow tank and flows out from the overflow tank. After it is full, it can flow out in the form of a water curtain along the direction of the vertical section to protect the vertical section. In addition, a water spray pipe is arranged on the top of the transverse section, and the water spray pipe has a water spray port for spraying water on both sides, so that water can be sprayed out from both sides, and under the action of the arc-shaped guide plate, it can effectively A water curtain is formed on the inner wall of the cylindrical pipe to play a protective role.

As a further improvement of the present invention, the other side of the curved guide plate relative to the water curtain gap is covered with an anti-paint film.

By adopting the above technical scheme, the other side of the arc-shaped guide plate is covered with an anti-paint film, which can effectively avoid the effect of the arc-shaped guide plate.

As a further improvement of the present invention, the transverse section is arranged obliquely downward toward the gas outflow direction, and a drainage port is provided on the bottom wall of the transverse section near the sewage treatment device.

By adopting the above technical solution, the transverse section is arranged obliquely downward, and then the water flowing in the transverse section can automatically flow to the drainage port under the action of gravity.

As a further improvement of the present invention, the water collecting device includes a first water tank arranged under the vertical section, and a first water pump is connected to the first water tank, and the first water pump is connected to the drain of the vertical section. The pipelines are connected; the water collecting device also includes a second water tank connected to the drainage port, the second water tank is connected with a second water pump, and the second water pump is connected with the water drainage pipe and the spray nozzle of the horizontal section. Water pipes are connected.

By adopting the above technical solution, the first water tank can collect the water in the vertical section, and the water can be returned to the water spray pipe through the water pump, so as to realize the recycling and reuse of the water in the vertical section; Connected with a second water pump, the second water tank plays a role in collecting the water that flows into the drainage port for the lateral section, and realizes that the water in the second water tank is injected into the water spray pipe and spray water again through the second water pump Among the pipelines, the water in the horizontal section can be reused.

Based on the above technical solutions, the present invention has the following beneficial effects:

1. Form a water curtain on the inner wall of the exhaust pipe, the water curtain can effectively protect the inner wall of the exhaust pipe, and can also further absorb the paint mist in the water;

2. Set the exhaust pipe as a vertical section and a horizontal section. The vertical section plays a guiding role for the paint mist gas, and then the horizontal section can be effectively connected with the sewage treatment device;

3. The horizontal section is arranged obliquely, so that the water can flow to the drainage port under the action of gravity;

4. The first water tank, the first water pump, the second water tank, and the second water pump are provided, so that the water in the vertical section and the horizontal section can be recycled.

The second object of the present invention is to provide a spray booth, including a spray booth body, the spray booth body includes an air inlet device and an air exhaust device, and the air inlet device includes an air inlet pipe connected to the paint spray booth body and an air inlet device. The fan unit, the exhaust device includes an exhaust duct and an exhaust unit, and the exhaust duct is as described above.

Description of drawings

Fig. 1 is the overall front view among the following embodiments;

Fig. 2 is the branch schematic diagram of the pipe body and the water collecting device of embodiment 1;

Fig. 3 is an enlarged view of part A of Fig. 2;

Fig. 4 is a schematic diagram of the branching of the pipe body and the water collecting device of the second embodiment.

In the figure, 1, painting room; 11, air inlet device; 11a, air inlet pipe; 11b, air inlet unit; 12, exhaust fan unit; 2, pipe body; 21, vertical section; 211, top; 212, connection 22, transverse section; 221, top wall; 23, drainage opening; 3a, drainage pipe; 3b, spray pipe; 3c, drainage hole; 4, water collecting device; 41, the first water tank; 42, the first Suction pump; 43, second water tank; 44, second water pump; 5, sewage treatment device; 6, connecting pipe; 7, anti-paint film; 8, overflow tank; 9, arc guide plate.

detailed description

The present invention will be described in further detail below in conjunction with the accompanying drawings.

Example 1:

Referring to accompanying drawing 1, a kind of exhaust duct, is particularly suitable for the exhaust duct that is connected with spray booth 1, and spray booth 1 comprises air inlet device 11 and exhaust device, and air inlet device 11 comprises air inlet pipe 11a and air inlet unit 11b, the exhaust device includes an exhaust duct and an exhaust fan unit 12, the air is sucked by the air intake device 11, is sucked through the air intake duct 11a, and enters the relatively airtight spray booth 1, and the product is processed under the operation of the staff. Paint spraying, the excess paint mist produced by spray painting is discharged to the outside through the exhaust pipe under the action of the exhaust fan unit 12, and the exhaust pipe is connected with the sewage treatment device 5 to further filter the paint mist, and finally discharged into the atmosphere.

In conjunction with accompanying drawing 2, the exhaust pipe is further described below. In this embodiment, the exhaust pipe is a square pipe. The exhaust pipe (hereinafter referred to as the pipe body 2) includes a vertical section 21 and a transverse section 22. Wherein the vertical section 21 is connected with the spray booth 1 , the end of the vertical section 21 is connected with the transverse section 22 at 90°, and the end of the transverse section 22 is connected with the sewage treatment device 5 . A water curtain generating device is arranged inside the exhaust pipe, and the water curtain generating device is used to form a water curtain on the inner wall surface of the transverse section 22 and the vertical section 21 of the pipe body 2, so as to achieve the process of the paint mist passing through the pipe body 2 Among them, the inner wall of the pipe body 2 is protected by a water curtain, and a water collecting device 4 is arranged below the vertical section 21 of the pipe body 2, and the water collecting device 4 is used to collect the water flowing through the inner wall of the pipe body 2.

In conjunction with accompanying drawing 3, the structure of the water curtain generating device will be further elaborated below. The top 211 of the vertical section 21 includes three connecting ends 212 that are almost at the same height and are higher than the top 211 connected to the horizontal section 22. The top 211 is provided with an overflow groove 8 on the top 211 and the connecting end 212. The shape of the overflow groove 8 is a trapezoidal groove in the present embodiment, and an overflow groove 8 is arranged inside the overflow groove 8. The flow channel 8 is provided with a drain pipe 3a in a suitable direction, and a drain hole 3c is opened on the drain pipe 3a. Water flows out from the drain hole 3c and accumulates in the overflow tank 8, and finally flows out from the edge of the overflow tank 8 , to form water curtains on the four side walls of the vertical section 21. An overflow groove 8 is also arranged on the top of the side wall of the transverse section 22, and the direction of the overflow groove 8 matches the length direction of the transverse section 22, and its shape also adopts a trapezoidal groove. A drainage pipe 3a is arranged inside to form a water curtain on the side wall of the transverse section 22; furthermore, the transverse section 22 is arranged obliquely downward toward the direction of the sewage treatment device 5 to reach the water curtain formed on the side wall. The curtain can accumulate on the bottom wall, and the water on the bottom wall forms a layer of water curtain under the action of gravity along with the inclined direction; The setting direction of 3b is adapted to the length direction of the transverse section 22, and the water spray pipe 3b has water spray openings facing the side walls on both sides, so that a water curtain can be formed in the top wall 221, and a water curtain can be formed on the bottom wall of the transverse section 22. The part close to the sewage treatment device 5 is provided with a drainage port 23 for draining the water in the transverse section 22 .

The following is a further elaboration on the water collection device 4, the water collection device 4 includes a first water tank 41 arranged below the vertical section 21, the first water tank 41 is connected with a first water pump 42, and the first water pump 42 is connected to Pipeline 6 is communicated with the drain pipe 3a of vertical section 21; Water collecting device 4 also comprises the second water tank 43 that is connected with drain port 23, is connected with second water pump 44 on the second water tank 43, and the second water pump 44 are all connected to the drainage pipe 3 a and the water spray pipe 3 b of the transverse section 22 through the connecting pipe 6 . The first water tank 41 has played the collection of the moisture in the vertical section 21, and water can be re-arrived in the middle of the water spray pipeline 3b by the water pump, realizes the recycling and reuse of water in the vertical section 21; Connect on the second water tank 43 There is a second water pump 44, and the second water tank 43 has played a role in collecting the moisture that the lateral section 22 flows into the drain port 23, and realizes that the water in the second water tank 43 is driven into the water tank 43 again by the second water pump 44. Among the water spray pipes 3b, the water in the transverse section 22 can be reused.

The inside of the top wall 221 of the transverse section 22 is covered with an anti-paint film 7, the anti-paint film 7 can play a further role of anti-paint for the top wall 221, and the top wall 221 and the transverse section 22 are detachably arranged, because The top wall 221 is only formed as a water spray, so a water curtain cannot be formed. On the basis of the water spray and the anti-paint film 7, the transverse section 22 is set to be detachable, so that the transverse section 22 can be installed separately. 22 is disassembled, the transverse section 22 can be cleaned, and the inside of the transverse section 22 can also be cleaned.

Example 2:

Referring to accompanying drawing 4, on the basis of embodiment 1, the difference with embodiment 1 is that the shape of the pipe body 2 among the embodiment 2 is a cylindrical pipe, and the vertical section 21 and the transverse section 22 are both cylindrical. The top 211 of the top wall 221 of the vertical section 21 includes a circular arc-shaped top 211 and a connecting end 212 connected to the transverse section 22 lower than the above-mentioned top 211, and an overflow groove is arranged on the top 211 and the connecting end 212 8. The shape of the overflow tank 8 is a trapezoidal groove in this embodiment, wherein a drain pipe 3a matching the opening direction of the overflow tank 8 is arranged inside the overflow tank 8, and the drain pipe 3a A drainage hole 3c is opened on the top, water flows out from the drainage hole 3c and accumulates in the overflow groove 8, and finally flows out from the edge of the overflow groove 8, and forms a water curtain on the inner side wall of the vertical section 21. The top of the transverse section 22 is arranged with a water spray pipe 3b, and the setting direction of the water spray pipe 3b is adapted to the length direction of the transverse section 22. An arc-shaped guide plate 9 is arranged below the water pipe 3 b, and a water curtain gap is formed between the arc-shaped guide plate 9 and the transverse section 22 . The water spray pipe 3b can spray water from both sides, and under the action of the arc-shaped guide plate 9, it can effectively form a water curtain on the inner wall of the cylindrical pipe to play a protective role. Further, the other side of the curved guide plate 9 is covered with an anti-paint film 7, which can effectively avoid the effect of the curved guide plate 9.

This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications to this embodiment without creative contribution as required after reading this specification, but as long as they are within the rights of the present invention All claims are protected by patent law.

Claims (10)

1. a kind of discharge duct, including pipeline body (2), it is characterised in that the inwall of the pipeline body (2) is provided with water Curtain generating means, the water curtain generating means is formed with water curtain in the inwall of pipeline body (2), in the pipeline body (2) Bottom is provided with captation (4).

2. a kind of discharge duct according to claim 1, it is characterised in that the pipeline body (2) includes vertical section (21) with traversing section (22), the traversing section (22) is connected with dirty Flash Gas Compression Skid System (5).

3. a kind of discharge duct according to claim 1, it is characterised in that the pipeline body (2) is square pipe, institute Stating water curtain generating means includes forming the overflow launder (8) at top (211) place of vertical section (21), is arranged in overflow launder (8) There is drainage pipeline (3a)；Overflow launder (8) is formed with above the side wall of the traversing section (22), is disposed with overflow launder (8) Drainage pipeline (3a).

4. a kind of discharge duct according to claim 3, it is characterised in that in the roof (221) of the traversing section (22) Portion sets the water pipeline (3b) of oriented both sides water spray.

5. a kind of discharge duct according to claim 4, it is characterised in that in the roof (221) of the traversing section (22) Side is covered with anti-paint film (7), and roof (221) and the traversing section (22) of the traversing section (22) are detachable setting.

6. a kind of discharge duct according to claim 1, it is characterised in that the pipeline body (2) is cylindrical tube, The water curtain generating means includes forming the overflow launder (8) at top (211) place of vertical section (21), in overflow launder (8) interior cloth It is equipped with drainage pipeline (3a)；In the water pipeline that sidewall direction is sprayed water at arrangement oriented two at the top of the traversing section (22) (3b), is provided with the arcuate guide being adapted with the madial wall shape of pipeline body (2) below the water pipeline (3b) Plate (9), forms water curtain gap between the arc-shaped guide plate (9) and traversing section (22).

7. a kind of discharge duct according to claim 6, it is characterised in that the arc-shaped guide plate (9) relative to water The opposite side of interlude gap is covered with anti-paint film (7).

8. a kind of discharge duct according to claim 1 to 7 any one, it is characterised in that traversing section (22) court Gas outflow direction is set diagonally downward, and draining is provided with sewage-treatment plant position in the bottom wall of traversing section (22) leads to Mouth (23).

9. a kind of discharge duct according to claim 8, it is characterised in that the captation (4) is perpendicular including being arranged on The first suction pump (42) is connected with the first water tank (41) below straight section (21), first water tank (41), described first takes out Water pump (42) is connected with the drainage pipeline (3a) of vertical section (21)；The captation (4) also includes and draining port (23) The second suction pump (44), second suction pump are connected with the second water tank (43) being connected, second water tank (43) (44) it is connected with the drainage pipeline (3a) and water pipeline (3b) of traversing section (22).

10. a kind of paint spray booth, including air-intake device (11) and air exhausting device, the air-intake device (11) include and paint spray booth (1) The intake stack (11a) and air intake unit (11b) of body connection, the air exhausting device include discharge duct and exhaust fan unit (12), The discharge duct is as described in claim 1 to 9 any one.