Coating device for metal plate production

Abstract

The utility model discloses a coating device for metal plate production, and belongs to the technical field of metal plate processing. Comprising a coating box, a feeding door and a discharging door which are arranged on the two opposite sides of the coating box correspondingly, a conveying belt arranged in the coating box, and a spraying assembly arranged on the top wall of the coating box. The coating device further comprises a filtering device arranged outside the coating box and communicated with the interior of the coating box, and an adsorption device connected with the air outlet end of the filtering device. The adsorption device comprises an adsorption tower, a filter screen arranged in the adsorption tower, a discharge pipe arranged at the bottom end of the filter screen, and a plugging block arranged at the discharge end of the discharge pipe; the bottom end of the discharge pipe penetrates through the adsorption tower and is communicated with the outside; a material receiving bag is arranged at the bottom end of the adsorption tower, and the plugging block is arranged on the inner bottom wall of the material receiving bag. According to the waste gas treatment device, particulate matters and volatile organic compounds in waste gas can be effectively removed, and the technical problems that the particulate matters and the volatile organic compounds are diffused into the environment to cause environmental pollution and harm human health are effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal sheet processing technical field especially relates to a coating device for metal sheet production. BACKGROUND

[0002] Metal sheet is with metal material quality as base material, such as aluminium and aluminium alloy base material, steel sheet base material, stainless steel base material, copper base material etc., is the sheet that is processed through different processes.

[0003] In order to promote the use performance of metal sheet and prolong the service life of metal sheet, the surface of metal sheet is often painted coating treatment, and the treatment mode has spraying, scraping or rolling.

[0004] Because paint forms a large amount of paint mist in the coating process, volatile organic compounds contained in the paint mist can cause great harm to the human body and the environment, therefore, how to effectively remove volatile organic compounds in the coating process is extremely important. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a coating device for metal sheet production, which can effectively remove the paint mist generated in the coating process.

[0006] The utility model aims at realizing the following technical scheme:

[0007] A coating device for metal sheet production, comprising a coating box, a feeding door and a discharging door arranged on opposite sides of the coating box respectively, a conveying belt arranged in the coating box, and a spraying assembly arranged on the top wall of the coating box; the coating device further comprises a filtering device arranged outside the coating box and communicating with the inside of the coating box, and an adsorption device connected with the air outlet end of the filtering device; the adsorption device comprises an adsorption tower, a filter screen arranged in the adsorption tower, a discharging pipe arranged at the bottom end of the filter screen, and a plugging block arranged at the discharging end of the discharging pipe; the bottom end of the discharging pipe penetrates through the adsorption tower and communicates with the outside; the bottom end of the adsorption tower is provided with a collecting bag, and the plugging block is arranged on the inner bottom wall of the collecting bag.

[0008] Preferably, the filter screen is inclined downward along the direction of the discharging pipe.

[0009] Preferably, the plugging block is threadedly connected between the upper portion and the discharging pipe.

[0010] Preferably, the top end of the plugging block is provided with a buffer layer.

[0011] Preferably, the filtering device comprises G3 and F5 filters.

[0012] Preferably, the top end of the collecting bag is provided with a mounting ring, a plurality of mounting holes are circumferentially arranged on the mounting ring, and the bottom end of the adsorption tower is provided with a plurality of hooks matched with the mounting holes through a connecting rope.

[0013] Preferably, the spraying assembly comprises a temporary storage box arranged on the inner top wall of the coating box, and a spraying gun arranged at the bottom end of the temporary storage box; the temporary storage box is connected with a paint tank arranged outside the coating box through a connecting pipe, and a water pump is arranged on the connecting pipe.

[0014] Preferably, the feeding door and the discharging door are both vertical sliding doors.

[0015] Compared with the prior art, the utility model has the beneficial effects as follows:

[0016] 1. By setting the filter device communicated with the coating box, the particulate matter or sticky substance in the generated paint mist can be removed, so that the pores of the activated carbon are not blocked during the subsequent activated carbon adsorption operation, and the adsorption efficiency of the activated carbon on the organic matter is reduced; by setting the adsorption device, the activated carbon can be placed in the adsorption device, the volatile organic compounds are adsorbed by the activated carbon, and then the content of the volatile organic compounds in the exhaust gas is effectively reduced, so that the environmental pollution caused by the diffusion of the volatile organic compounds into the environment and the harm to human health are effectively avoided.

[0017] In the prior art, when the activated carbon is replaced, the blocking block is directly taken out, and then collected by a collecting container placed below the discharging pipe. However, because the interval between the collecting container and the discharging port is large, part of the activated carbon will fall outside the collecting container along the arm during the manual removal of the blocking block, and part of the material will also splash outside the collecting container, thereby causing material loss. Therefore, the utility model sets a collecting bag on the blocking block, so that when the activated carbon needs to be replaced, the blocking block can be taken out from the discharging pipe by hand through the collecting bag. During the taking-out process, other workers can pull the bag opening of the collecting bag to make it close to the bottom wall of the adsorption tower. In this way, when the blocking block is taken out from the discharging port, the activated carbon directly falls into the collecting bag, and does not splash into the collecting bag, thereby effectively avoiding material loss. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a sectional structure schematic view of the front direction of the embodiment 1.

[0019] Figure 2 It is a structure schematic view of the front direction of the hook.

[0020] Figure 3 It is a structure schematic view of the top direction of the mounting ring.

[0021] In the diagram: 1-Coating box, 3-Infeed gate, 2-Conveyor belt, 4-Adsorption tower, 5-Filter screen, 6-Discharge pipe, 7-Sealing block, 8-Collection bag, 9-Mounting ring, 10-Mounting hole, 12-Connecting rope, 11-Hook, 14-Temporary storage box, 15-Spray gun, 16-Connecting pipe, 17-Filter device Detailed Implementation

[0022] Example 1

[0023] A coating apparatus for producing metal sheets, such as Figure 1 As shown, the coating includes a coating box 1, an inlet gate 3 and an outlet gate respectively located on opposite sides of the coating box 1, a conveyor belt 2 installed inside the coating box 1 (the conveying principle of the conveyor belt 2 is existing technology; a motor drives a rotating shaft on the conveyor belt 2 to rotate, thereby achieving the purpose of conveying the sheet material; since the conveyor belt 2 is existing technology, its detailed structure and working principle will not be described in detail here), and a spraying assembly installed on the top wall of the coating box 1. Specifically, as shown... Figure 1 As shown, the spraying assembly includes a temporary storage box 14 disposed on the top wall of the coating box 1, and a spray gun (existing technology, the working principle of which will not be described in detail here) disposed at the bottom of the temporary storage box 14 and communicating with the interior of the coating box 1. The number of spray guns 15 is not limited here and can be set according to actual conditions. The temporary storage box 14 is connected to a paint tank (existing technology, not shown in the figure, mainly used to hold paint) disposed outside the coating box 1 via a connecting pipe 16. A water pump (existing technology, not shown in the figure) is provided on the connecting pipe 16.

[0024] In addition, such as Figure 1 As shown, the coating apparatus further includes a filter device 17 disposed outside the coating box 1 and connected to the interior of the coating box 1 via an air pipe, and an adsorption device connected to the air outlet of the filter device 17. An air pump (existing technology, not shown in the figure) is installed on the air pipe. The filter device 17 includes G3 and F5 filters (both of these precision filters are existing technology and are not shown in the figure). The adsorption device includes an adsorption tower 4, a filter screen 5 horizontally disposed within the adsorption tower 4, an air outlet pipe disposed at the top of the adsorption tower 4, a discharge pipe 6 disposed at the bottom of the filter screen 5, and a sealing block 7 disposed at the discharge end of the discharge pipe 6; the bottom end of the discharge pipe 6 penetrates the adsorption tower 4 and communicates with the outside; granular activated carbon is disposed inside the adsorption tower 4 and at the top of the filter screen 5. Figures 1-2 As shown, a collection bag 8 (a common bag used to collect activated carbon inside the adsorption tower 4, such as a woven bag or a thick plastic bag) is provided at the bottom of the adsorption tower 4, and the sealing block 7 is fixedly installed on the inner bottom wall of the collection bag 8. Further, as... Figure 1As shown, the filter screen 5 is arranged downwardly along the direction of the discharge pipe 6. Further, the upper portion of the blocking block 7 is threadedly connected with the discharge pipe 6.

[0025] Working principle: the metal plate to be sprayed is placed on the conveying belt 2 at the feeding door 3, and then conveyed to the discharging door by the conveying belt 2. In this process, the water pump is opened, so that the paint in the paint tank enters the temporary storage tank 14 through the connecting pipe 16, and then flows into the spraying gun 15 through the pipeline between the temporary storage tank 14 and the spraying gun 15, and then the paint is sprayed out of the spraying gun 15 to spray the surface of the metal plate. In the spraying process, the air pump is opened, so that the waste gas or paint mist generated in the coating tank 1 enters the filtering device 17 along the air pipe, and the particles and sticky substances in the paint mist are effectively removed through the two different precision filters G3 and F5, so as to avoid the adverse effects of particles and sticky substances on subsequent adsorption. After that, the waste gas enters the adsorption tower 4, and then the volatile organic compounds in the waste gas are adsorbed by the granular activated carbon after passing through the filter screen 5, and then discharged along the exhaust pipe.

[0026] Through the synergistic effect of the above-mentioned devices, the particulate matter and volatile organic compounds in the waste gas can be effectively removed, and the technical problems of environmental pollution and harm to human health caused by the diffusion of volatile organic compounds into the environment can be effectively avoided.

[0027] It is worth noting that in the coating process, in order to maximize the avoidance of the diffusion of waste gas into the environment, the feeding door 3 and the discharging door need to be closed. Therefore, after coating a plate and taking it out of the discharging door, the feeding door 3 can be opened to place the next metal plate to be sprayed. Therefore, in order to observe whether the metal plate is conveyed to the discharging door, a transparent observation window can be arranged on the side wall of the spraying tank.

[0028] Example 2

[0029] On the basis of example 1, the top end of the blocking block 7 is provided with a buffer layer (prior art, not shown in the figure) to avoid hard collision between the activated carbon and the blocking block 7 during the falling process, which may cause damage to the activated carbon. Further, as shown in the figure, the buffer layer is arranged on the top end of the blocking block 7, and the filter screen 5 is arranged on the buffer layer. Figures 2-3As shown, the top end of the collecting bag 8 is provided with a hard mounting ring 9, and a plurality of mounting holes 10 are circumferentially arranged on the mounting ring 9. The bottom end of the adsorption tower 4 is provided with a plurality of hooks 11 adapted to the mounting holes 10 through a connecting rope 12. The hooks 11 can rotate in any direction. In actual implementation, the distance between the working mounting ring 9 and the adsorption tower 4 is relatively close, and the caliber of the mounting ring 9 is relatively large, so that the activated carbon is difficult to splash out from the gap between the mounting ring 9 and the adsorption tower 4. When the activated carbon needs to be taken out, the mounting ring 9 is first moved upward to the inside of the plurality of hooks 11, and then the hooks 11 adapted to the mounting holes 10 are hung into the corresponding mounting holes 10 to achieve the purpose of limiting the mounting ring 9 on the adsorption tower 4. In this way, during the material taking process, the staff does not need to pull the bag opening, thereby reducing the manpower and workload. Further, the feeding door 3 and the discharging door are both vertical sliding doors (prior art, such as vertical sliding windows), so as to reduce the horizontal space occupation when the two are opened.

Claims

1. A coating device for metal sheet production, comprising a coating box (1), an inlet door (3) and an outlet door arranged respectively on opposite sides of the coating box (1), a conveying belt (2) arranged in the coating box (1), and a spraying assembly arranged on the top wall of the coating box (1); characterized in that, The filter device (17) is arranged outside the coating box (1) and communicates with the inside of the coating box (1), and an adsorption device is connected to the air outlet end of the filter device (17); the adsorption device comprises an adsorption tower (4), a filter screen (5) arranged in the adsorption tower (4), a discharge pipe (6) arranged at the bottom end of the filter screen (5), and a blocking block (7) arranged at the discharge end of the discharge pipe (6); the bottom end of the discharge pipe (6) penetrates through the adsorption tower (4) and communicates with the outside; the bottom end of the adsorption tower (4) is provided with a material collecting bag (8), and the blocking block (7) is arranged on the inner bottom wall of the material collecting bag (8).

2. The coating device for metal sheet production according to claim 1, characterized in that, The filter screen (5) is arranged downwardly and obliquely along the direction of the discharge pipe (6).

3. The coating device for metal sheet production according to claim 1, characterized in that, The upper part of the blocking block (7) is threadedly connected with the discharge pipe (6).

4. The coating device for metal sheet production according to claim 3, characterized in that The top end of the blocking block (7) is provided with a buffer layer.

5. The coating device for metal sheet production according to claim 1, characterized in that, The filter device (17) comprises G3 and F5 filters.

6. The coating device for metal sheet production according to claim 1, characterized in that, The top end of the material collecting bag (8) is provided with a mounting ring (9), a plurality of mounting holes (10) are circumferentially arranged on the mounting ring (9), and the bottom end of the adsorption tower (4) is provided with a plurality of hooks (11) matched with the mounting holes (10) through a connecting rope (12).

7. The coating device for metal sheet production according to claim 1, characterized in that, The spraying assembly comprises a temporary storage box (14) arranged on the top wall of the coating box (1), and a spraying gun (15) arranged at the bottom end of the temporary storage box (14); the temporary storage box (14) is connected to a paint box arranged outside the coating box (1) through a connecting pipe (16), and a water pump is arranged on the connecting pipe (16).

8. The coating device for metal sheet production according to claim 1, characterized in that, The feeding door (3) and the discharging door are both vertical sliding doors.

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