CN202752149U - Coating spaying device - Google Patents

Abstract

The utility model relates to a paint spraying device, comprising a paint spray box (1), a paint recovery box (2), a paint pump (3) and a blower (4); the upper end of the spray paint box (1) and the paint recovery box (2) The upper end of the upper end is connected and sealed through the first connecting pipe (51), wherein, the middle part of the spray box (1) is provided with a feed port (11) connecting the spray box (1) with the outside atmosphere, below the feed port (11) The spraying box (1) is filled with paint; the inlet of the paint pump (3) is connected to the paint recovery box (2), and the outlet is connected to the spraying box (1) to transport the paint recovered in the paint recovery box (2) to the spraying box (1 ) below; the air blower (4) is connected to the upper part of the paint recovery box (2) and sucks air. The realization of the embodiment of the utility model can not only make the paint evenly distributed on the surface of the workpiece, but also effectively prevent the paint from diffusing into the air outside the device, thereby preventing the air from being polluted, ensuring the health of the sprayers, and at the same time realizing To make full use of 100% of the paint.

Description

A paint spraying device

technical field

The utility model belongs to the technical field of spraying, in particular to a paint spraying device.

Background technique

At present, the existing paint spraying process mainly uses a spray gun to atomize the paint and then sprays the workpiece; however, the utility model finds that the existing paint spraying process has at least the following disadvantages:

First, as shown in Figure 1, after the paint is sprayed from the spray gun 1, a fan-shaped atomization area A will be formed; only a part of the atomized paint in the atomization area A will adhere to the workpiece 2, while the rest Some of the atomized coatings are directly diffused into the air, and some are splashed into the air after impacting the surface of the workpiece 2; under the existing technical conditions, there is no good way for these atomized coatings to diffuse into the air Therefore, this spraying process will not only cause serious waste of paint, but also cause serious air pollution and endanger the health of sprayers. Long-term production practice shows that: for strip-shaped workpieces, the effective utilization rate of paint by this spraying process does not exceed 30%.

Second, as shown in Figure 1, use the spray gun 1 and the spray gun 1' to spray the workpiece 2; wherein, after the paint is sprayed out from the spray gun 1, a fan-shaped atomization area A will be formed, and after the paint is sprayed out from the spray gun 1' A fan-shaped atomization area A' will be formed; in actual operation, there will inevitably be a certain range of overlapping areas between the atomization area A and the atomization area A', which is the overlapping atomization area S. In the process of spraying the workpiece 2, a layer of paint will be attached to the surface of the workpiece 2 covered by the atomization area A', and a layer of paint will also be attached to the surface of the workpiece 2 covered by the atomization area A'; There is an overlapping atomization area S between the area A and the atomization area A', so the surface of the workpiece 2 covered by the overlapping atomization area S will form two layers of paint. This will cause the coating on the surface of the workpiece 2 to be uneven, and even cause paint leakage and sagging, which will not only affect the aesthetic appearance of the workpiece 2, but also may cause uneven performance of the workpiece 2.

Utility model content

The utility model provides a paint spraying device, which not only can make the paint evenly distributed on the surface of the workpiece, but also can effectively prevent the paint from diffusing into the air outside the device, thereby preventing the air from being polluted and ensuring the health of sprayers. Also realized the full utilization of 100% to coating simultaneously.

The purpose of this utility model is achieved through the following technical solutions:

A paint spraying device, comprising a paint spray box 1, a paint recovery box 2, a paint pump 3 and a blower 4;

The upper end of the spraying box 1 and the upper end of the paint recovery box 2 are communicated and sealed through the first connecting pipe 51, wherein, the middle part of the spraying box 1 is provided with a feed port 11 connecting the spraying box 1 with the outside atmosphere , paint is filled in the spray box 1 below the feed port 11;

The inlet of the paint pump 3 is connected to the paint recovery box 2, and the outlet is connected to the spraying box 1 to transport the paint recovered in the paint recovery box 2 to the bottom of the spraying box 1;

The blower 4 is connected to the upper part of the paint recovery box 2 and sucks air.

Preferably, the shape of the corresponding feed opening 11 is the same as the cross-sectional shape of the workpiece to be processed.

Preferably, the liquid level of the paint contained in the corresponding spraying box 1 is located below the feed port 11;

Preferably, the inside of the corresponding paint recovery box 2 is provided with a partition plate 21 along the vertical direction;

The upper end of the right side of the paint recovery box 2 communicates with the upper end of the spraying box 1 through the first connecting pipe 51;

The left upper end of the paint recovery tank 2 communicates with the air blower 4 through the fourth connection pipe 54 .

Preferably, the corresponding partition board 21 extends from the top of the paint recovery tank 2 to the lower part of the paint recovery tank 2 , and the partition board 21 located in the middle and lower part of the paint recovery tank 2 is provided with an opening.

Preferably, the bottom surface of the corresponding paint recovery box 2 is a slope 22 , and the slope on the left side of the paint recovery box 2 is higher than the slope on the right side of the paint recovery box 2 .

Preferably, the inlet of the corresponding paint pump 3 is communicated and sealed with the bottom of the paint recovery tank 2 through the second connecting pipe 52; the outlet of the paint pump 3 is communicated and sealed with the spray tank 1 through the third connecting pipe 53, and the paint is recovered The paint recovered in the box 2 is conveyed to the bottom of the spraying box 1.

As can be seen from the technical solutions provided by the above-mentioned embodiments of the present invention, the blower 4 of the embodiments of the present invention can continuously extract air from the spraying tank 1 through the paint recovery tank 2, because each part of the device is well sealed and the gap between each part Both adopt sealed connection, so the air can only flow into the device through the feed port 11 of the spray box 1; when the workpiece enters the spray box 1 from the feed port 11, there will be a certain gap between the workpiece surface and the feed port 11, The air flows into the spray box 1 at high speed and flows through the surface of the paint, thereby fully atomizing the paint; due to the limited space of the spray box 1, when a large amount of atomized paint is suspended in this space, the density of the atomized paint in the spray box 1 is Basically consistent, so these atomized paints will evenly adhere to the surface of the workpiece, so as to achieve uniform spraying on the workpiece. At the same time, the atomized paint that is not attached to the surface of the workpiece will flow into the right side of the paint recovery box 2 together with the air. At this time, due to the large space of the cavity, the flow speed of the air suddenly slows down, and it is also affected by the paint recovery box. 2 inner walls and partitions 21 block, so the atomized paint in the air will be separated from the air, and will settle to the bottom of the paint recovery tank 2 under the action of gravity; 3 under the action of pumping back to the spraying box 1, thereby realizing the full recycling of 100% of the paint; and the clean air separated from the atomized paint on the right side of the paint recovery box 2 will pass through the partition plate 21 The provided opening flows into the left side of the paint recovery box 2, and is discharged into the atmosphere under the action of the blower 4; since these airs are clean air that has been separated from the paint, each part of the device is well sealed and will not leak Therefore, the device can effectively prevent the paint from diffusing into the air outside the device, thereby protecting the air from pollution and ensuring the health of sprayers.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the paint spraying process schematic diagram that utilizes spray gun to carry out spraying in the prior art;

Fig. 2 is a structural schematic diagram of the paint spraying device provided by the utility model.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. It should be understood that the described embodiments are only part of the embodiments of the present invention, rather than Full examples. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The paint spraying device provided by the embodiment of the present invention will be further described in detail with reference to the accompanying drawings.

As shown in Figure 2, a kind of paint spraying device, its concrete structure can comprise spray box 1, paint recovery box 2, paint pump 3 and blower 4; The upper end of spray box 1 and the upper end of paint recovery box 2 pass through first The connecting pipe 51 is connected and airtight; the middle part of the spray box 1 is provided with a feed port 11 connecting the spray box 1 with the outside atmosphere, and the spray box 1 below the feed port 11 is filled with paint; the blower 4 is connected to the top of the paint recovery box 2 and pump air;

The inlet of the paint pump 3 is connected to the paint recovery box 2, and the outlet is connected to the spraying box 1 to transport the paint recovered in the paint recovery box 2 to the bottom of the spraying box 1; It is communicated with the bottom of the paint recovery tank 2 and sealed; the outlet of the paint pump 3 is preferably communicated with the spray tank 1 through the third connecting pipe 53 and sealed, so that the recovered paint in the paint recovery tank 2 can be transported to the inlet as much as possible. The spraying box 1 below the feed port 11 provides necessary conditions for the full utilization of 100% of the paint.

Wherein, the shape of the corresponding feed port 11 is the same as the cross-sectional shape of the workpiece to be processed, and the size of the feed port 11 should be slightly larger than the size of the cross-section of the workpiece to be processed; in practical applications, the feed port 11 It is advisable that there is still a gap of 1 mm to 30 mm between the outer surface of the workpiece to be processed and the feed inlet 11 after the workpiece to be processed is put into the feed port 11; In the spraying box 1, the air can have a higher flow velocity, thereby providing the necessary implementation conditions for the atomization of the paint. Simultaneously, the liquid level of the contained coating in the corresponding spraying box 1 is positioned at the below of the described feed inlet 11, and in actual application, the liquid level of the contained coating in the spraying box 1 is preferably positioned at 4 millimeters below the feed inlet 11 to 50 mm; this can ensure that the paint will not overflow from the feed port 11, and can make the air flow into the spray box 1 as close as possible to the paint surface, thereby ensuring that the paint can be fully atomized under the action of high-speed air. In order to achieve uniform spraying on the workpiece.

Specifically, the inside of the paint recovery box 2 is provided with a partition plate 21 in the vertical direction; Partition plate 21 is provided with opening; The upper end of the right side of paint recovery box 2 is communicated with the upper end of spraying box 1 by first connecting pipe 51, and the upper end of left side of paint recovery box 2 is through the 4th connecting pipe 54 It communicates with the blower 4; since the partition plate 21 in the paint recovery tank 2 extends from the top of the paint recovery tank 2 to the bottom of the paint recovery tank 2, the gas flowing into the paint recovery tank 2 from the spray tank 1 cannot directly flow into the paint recovery tank 2, but can only flow into the left side of the paint recovery tank 2 through the opening provided on the partition plate 21 at the lower part of the paint recovery tank 2; When flowing into the paint recovery box 2, due to the large space on the right side of the paint recovery box 2, the flow velocity of the air suddenly slows down, and it is also blocked by the inner wall of the paint recovery box 2 and the partition plate 21, so the atomized paint in the air It will be separated from the air and settle to the bottom of the paint recovery tank 2 under the action of gravity for the paint pump 3 to transfer it to the spray tank 1; in order to facilitate the paint entrained in the air to better collect in the paint recovery tank 2, in practical applications, the bottom surface of the corresponding paint recovery box 2 is preferably a slope 22, and the slope on the left side of the paint recovery box 2 is higher than the slope on the right side of the paint recovery box 2.

Further, the working principle of the paint spraying device provided by the embodiment of the present invention is as follows:

(1) The principle of uniform spraying on the workpiece

As we all know, when the air flow passes over the surface of the liquid at high speed, the liquid will be blown into granular droplets suspended in the air, which is the principle of atomization. The paint spraying device provided by the embodiment of the utility model just utilizes this principle: when the device is started, the air blower 4 can continuously extract air from the spraying box 1 through the paint recovery box 2, because each part of the device is well sealed And each part is sealed and connected, so the air can only flow into the device through the feed port 11 of the spray box 1; because the shape of the feed port 11 is the same as the cross-sectional shape of the workpiece, only the size is slightly larger than the cross-section of the workpiece, so When the workpiece enters the spraying box 1 by the feed port 11, there will be a certain gap between the workpiece surface and the feed port 11, and the air can only flow into the spraying box 1 through the gap; since the operating power of the blower 4 does not change, Therefore air can only flow into the spraying box 1 at a high speed; because the liquid level of the paint contained in the spraying box 1 is just below the described feed port 11, when the air flows through the surface of the coating at a high speed, the coating will be sprayed due to the principle of atomization. And atomization takes place, and then make in the whole spraying box 1, be full of atomized paint; Because spraying box 1 space is limited, when a large amount of atomized paints are all suspended in this space, the density of the atomized paint everywhere in this spraying box 1 is Basically consistent, so these atomized paints will evenly adhere to the surface of the workpiece to achieve uniform spraying on the workpiece. According to the working principle of the paint spraying device, the faster the air flows through the surface of the paint, the higher the degree of atomization of the paint, and the slower the speed of air flowing through the surface of the paint, the slower the degree of atomization of the paint. Therefore By adjusting the operating power of the blower 4 and/or adjusting the width of the gap between the workpiece surface and the feed port 11 when the workpiece is put into the feed port 11, the flow rate of the air flowing into the spraying box 1 can be adjusted, thereby adjusting the atomization degree of the paint . In practical application, no matter how complicated the surface shape of the workpiece is, since the atomized paint is evenly distributed in this space, the paint can be evenly attached to the surface of the workpiece, thereby ensuring the consistency of the spray thickness of the workpiece.

(2) The principle of recycling paint

The atomized paint that is not attached to the surface of the workpiece will flow into the right side of the paint recovery box 2 together with the air. At this time, due to the large space in the cavity, the flow speed of the air suddenly slows down, and it is also affected by the inner wall of the paint recovery box 2. And partition plate 21 blocks, so the atomized paint in the air can separate with air, and settle down to the bottom of paint recovery tank 2 under the action of gravity; Under the action, it is pumped back to the spraying box 1, thereby realizing the full recycling of 100% of the paint; and the clean air separated from the atomized paint on the right side of the paint recovery box 2 will pass through the bottom of the paint recovery box 2. The opening provided on the dividing plate 21 flows into the left side of the paint recovery box 2, and is discharged into the atmosphere under the effect of the blower 4; because these airs are clean air that has been separated from the paint, and each part of the device is sealed It is good and will not leak air, so the device can effectively prevent the paint from spreading into the air outside the device, thereby preventing the air from being polluted and ensuring the health of sprayers.

It should be noted that the first connecting pipe 51, the second connecting pipe 52, the third connecting pipe 53 and the fourth connecting pipe 54 described in this application document may all be pipelines in the prior art, and these four connecting pipes The same pipeline may be used, or different pipelines may be used. In addition, according to experimental calculations, the cycle time of the paint spraying device is about 3 minutes, so the paint spraying device provided by the embodiment of the present invention has a relatively high processing speed.

It can be seen that the realization of the embodiment of the utility model can not only make the paint evenly distributed on the surface of the workpiece, but also effectively prevent the paint from spreading into the air outside the device, thereby preventing the air from being polluted, ensuring the health of the sprayers, and at the same time It also achieves full utilization of 100% of the paint.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (7)

1. A paint spraying device, characterized in that it comprises a spray box (1), a paint recovery box (2), a paint pump (3) and a blower (4); The upper end of the spraying box (1) communicates with the upper end of the paint recovery box (2) through the first connecting pipe (51) and is sealed, wherein, the middle part of the spraying box (1) is provided with a communicating spraying box ( 1) The feed port (11) with the outside atmosphere, and the spray box (1) below the feed port (11) is filled with paint; The inlet of the paint pump (3) is connected to the paint recovery box (2), and the outlet is connected to the spraying box (1) to transport the recovered paint in the paint recovery box (2) to the bottom of the spraying box (1); The air blower (4) is connected to the upper part of the paint recovery box (2) and sucked air. 2. The paint spraying device according to claim 1, characterized in that, the shape of the feeding port (11) is the same as the cross-sectional shape of the workpiece to be processed. 3. The paint spraying device according to claim 1 or 2, characterized in that, the liquid level of the paint contained in the spray tank (1) is located below the feed inlet (11). 4. The paint spraying device according to claim 1 or 2, characterized in that, the inside of the paint recovery box (2) is provided with a partition plate (21) along the vertical direction; The upper end of the right side of the paint recovery box (2) communicates with the upper end of the spraying box (1) through the first connecting pipe (51); The left upper end of the paint recovery box (2) communicates with the air blower (4) through a fourth connecting pipe (54). 5. The paint spraying device according to claim 4, characterized in that, the partition plate (21) extends from the top of the paint recovery box (2) to the lower part of the paint recovery box (2), and is located at the bottom of the paint recovery box (2). The partition plate (21) in the lower part of the box (2) is provided with an opening. 6. The paint spraying device according to claim 1 or 2, characterized in that, the bottom surface of the paint recovery box (2) is a slope (22), and the slope on the left side of the paint recovery box (2) is as high as on the slope to the right of the paint recovery bin (2). 7. The paint spraying device according to claim 1 or 2, characterized in that, the inlet of the paint pump (3) is connected and sealed with the bottom of the paint recovery tank (2) through the second connecting pipe (52); the paint pump ( 3) The outlet of the outlet is connected and sealed with the spraying box (1) through the third connecting pipe (53), and the paint recovered in the paint recovery box (2) is transported to the bottom of the spraying box (1). the

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