Civil air defense door surface spraying device

Abstract

The utility model relates to the technical field of surface spraying, in particular to a civil air defense door surface spraying device which comprises a supporting structure and a reciprocating motion mechanism. The civil defense door is placed on the supporting structure, and supports are arranged at the two ends of the supporting structure respectively. The reciprocating motion mechanism is arranged on the support, a spray pipe, a first air pipe and a second air pipe are arranged on the reciprocating motion mechanism at intervals, and the reciprocating motion mechanism can drive the spray pipe, the first air pipe and the second air pipe to do reciprocating motion along the supporting structure; the input end of the spraying pipe is connected with a spraying machine; the opening of the output end of the first air pipe faces downwards, and a first valve is arranged on the first air pipe; an opening of the output end of the second air pipe faces downwards and inclines towards one side, and a second valve is arranged on the second air pipe. The input ends of the first air pipe and the second air pipe are connected with an air blower. The coating surface air shower device can solve the problem that a coating layer may peel off when air shower is carried out on the coating surface.

Description

Technical Field

[0001] This utility model relates to the field of surface spraying technology, specifically to a surface spraying device for air defense doors. Background Technology

[0002] Civil defense doors, also known as air defense protective doors, are special doors with specified protective capabilities. They are primarily used to prevent damage from shock waves, conventional bombs, and biological and chemical weapons, while also blocking electromagnetic pulses from damaging internal equipment. They are typically installed in underground civil defense projects, basements of high-rise buildings, or specialized civil defense facilities to protect personnel and equipment during wartime or natural disasters. To enhance corrosion resistance, appropriate coatings are usually applied to the surface of civil defense doors during production to improve their overall corrosion resistance and other properties.

[0003] Patent application number CN202323353831.0 discloses a spraying equipment for air-raid shelter doors. During the spraying process, a pump supplies airflow into the air duct for air outlet, achieving air showering of the air-raid shelter door. Although it can remove particulate matter, dust and other contaminants attached to the coating surface, the air showering method used in this patent is reverse air showering (i.e., blowing from the outside to the surface of the object). Since the surface of the air-raid shelter door after the coating has not been fully cured, the surface is relatively fragile and sensitive to wind. Therefore, the wind force of the reverse air shower may impact the uncured coating surface, causing the coating layer to peel off. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a spraying device for the surface of air-raid shelter doors to solve the problem that the coating layer may peel off when the coating surface is air-sprayed.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A surface coating device for air-raid shelter doors includes a support structure and a reciprocating motion mechanism. The support structure is used to hold the air-raid shelter door, and supports are provided at both ends of the support structure. The reciprocating motion mechanism is mounted on the supports, and a spray pipe, a first air duct, and a second air duct are spaced apart on the reciprocating motion mechanism. The reciprocating motion mechanism can drive the spray pipe, the first air duct, and the second air duct to reciprocate along the support structure. A spraying machine is connected to the input end of the spray pipe. The output end of the first air duct opens downwards and is equipped with a first valve. The output end of the second air duct opens downwards and is tilted to one side, and is equipped with a second valve. A blower is connected to the input ends of the first and second air ducts.

[0007] As a further improvement of this utility model, the supporting structure is a roller conveyor.

[0008] As a further improvement of this utility model, the reciprocating motion mechanism is a linear motor.

[0009] As a further improvement of this utility model, the output end opening of the nozzle is strip-shaped, and its length is greater than the width of the air-raid shelter door.

[0010] As a further embodiment of this utility model: wherein the nozzle, the first air duct and the second air duct are arranged along the length direction of the support structure, and the first air duct is located between the nozzle and the second air duct.

[0011] As a further embodiment of this utility model, the angle between the inclined direction of the output end of the second air duct and the horizontal plane is 15° to 30°.

[0012] As a further improvement of this utility model, both the first valve and the second valve are solenoid valves.

[0013] By adopting the above technical solution, this utility model will have the following beneficial effects:

[0014] This utility model provides a surface spraying device for air-raid shelter doors. Before spraying, a blower blows air downwards from the second air duct toward the upper surface of the air-raid shelter door, forming a reverse air shower to quickly blow away dust and particles from the surface of the air-raid shelter door. During spraying, a spraying machine sprays paint downwards from the spray nozzle toward the air-raid shelter door, while a reciprocating motion mechanism drives the spray nozzle to move back and forth, so that the paint is fully sprayed onto the upper surface of the air-raid shelter door. After spraying, a blower draws air along the upper surface of the air-raid shelter door from the first air duct, forming a forward air shower to suck away dust and particles from the coating surface.

[0015] Compared to existing technologies that use reverse air showers to clean the surface of air-raid shelter doors during the spraying process, this invention employs a forward air shower after spraying. This results in a more uniform airflow distribution (flowing along the surface of the air-raid shelter panel), reducing excessive localized airflow and achieving a uniform cleaning effect without damaging the coating layer. Furthermore, post-spray air showering prevents the coating from mixing with impurities in the air, ensuring a pure coating. In addition, the reverse air shower performed before spraying provides a rapid preliminary cleaning of the air-raid shelter door substrate surface, thereby improving the cleaning efficiency of subsequent coating processes on the air-raid shelter panel surface. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the air-raid shelter door surface spraying device after spraying, as described in this embodiment of the utility model.

[0018] Figure 2 for Figure 1 A schematic diagram of the structure of the air-raid shelter door surface spraying device before spraying, as described in the embodiment;

[0019] Figure 3 for Figure 1 A schematic diagram of the structure of the surface spraying device for the air-raid shelter door described in the embodiment during spraying.

[0020] The correspondence between the labels and component names in the attached figures is as follows:

[0021] 1. Support structure; 2. Reciprocating motion mechanism; 3. Bracket; 4. Spray pipe; 5. First air duct; 51. First valve; 6. Second air duct; 61. Second valve; 7. Spraying machine; 8. Blower; 9. Air defense door. Detailed Implementation

[0022] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the following description is to be considered exemplary in nature and not restrictive.

[0023] Please refer to Figure 1-3 In one embodiment of the surface spraying device for air-raid shelter doors according to this utility model, the surface spraying device for air-raid shelter doors includes a support structure 1 and a reciprocating motion mechanism 2; wherein, the support structure 1 is used to place the air-raid shelter door 9 to be coated, and vertical brackets 3 are respectively installed at both ends of the support structure 1; the reciprocating motion mechanism 2 is arranged on the brackets 3, and a spray pipe 4, a first air duct 5 and a second air duct 6 are arranged at intervals on the reciprocating motion mechanism 2, and the reciprocating motion mechanism 2 can drive the spray pipe 4, the first air duct 5 and the second air duct 6 to reciprocate along the support structure 1; the input end of the spray pipe 4 is connected to a spraying machine 7; the output end of the first air duct 5 opens downward and is provided with a first valve 51; the output end of the second air duct 6 opens downward and is inclined to one side, and is provided with a second valve 61; the input ends of the first air duct 5 and the second air duct 6 are connected to a blower 8.

[0024] Before spraying, the second air duct 6 is moved to one side of the air-raid shelter door 9 by the reciprocating motion mechanism 2, and then the second valve 61 is opened. The blower 8 blows air, causing the airflow to be blown from the second air duct 6 downwards toward the upper surface of the air-raid shelter door 9, forming a reverse air shower, which quickly blows away the dust and particles on the surface of the air-raid shelter door 9. During spraying, the paint is sprayed from the spray pipe 4 downwards toward the air-raid shelter door 9 by the spraying machine 7. At the same time, the reciprocating motion mechanism 2 drives the spray pipe 4 to move back and forth, thereby spraying the paint all over the upper surface of the air-raid shelter door 9. After spraying, the first air duct 5 is moved to directly above the air-raid shelter door 9 by the reciprocating motion mechanism 2, and then the first valve 51 is opened. The blower 8 draws air in from the first air duct 5 along the upper surface of the air-raid shelter panel, forming a forward air shower, which sucks away the dust and particles on the coating surface.

[0025] Specifically, the support structure 1 can be configured as a roller conveyor. Roller conveyors are common material conveying equipment, widely used in manufacturing, logistics, warehousing, packaging and other industries. Roller conveyors transport items through a series of parallel rollers, facilitating the movement of the air-raid shelter door 9 to be coated.

[0026] In this example, the reciprocating motion mechanism 2 can be configured as a linear motor. A linear motor is an existing type of motor that directly converts electrical energy into linear motion. The guide rail of the linear motor extends along the conveying direction of the roller conveyor, and its two ends are fixedly connected to the two aforementioned supports 3. A hanger is installed below the slider of the linear motor. The nozzle 4, the first air duct 5, and the second air nozzle 6 are arranged at intervals and fixedly connected to the hanger along the length direction of the support structure 1, with the first air duct 5 located between the nozzle 4 and the second air duct 6. The slider of the linear motor can drive the nozzle 4, the first air duct 5, and the second air nozzle to move along the guide rail of the linear motor via the hanger. Of course, the reciprocating motion mechanism 2 of this utility model can also adopt the pneumatic push rod structure disclosed in patent application number CN202323353831.0, or other existing devices. In principle, as long as the nozzle 4, the first air duct 5, and the second air duct 6 can reciprocate along the support structure 1 and be stopped at any time, it is acceptable.

[0027] Specifically, the output end opening of the nozzle 4 is strip-shaped, and its length is greater than the width of the air-raid shelter door 9. In this way, the paint sprayed by the nozzle 4 can complete one coat in each round trip of the reciprocating motion mechanism 2, thereby improving work efficiency.

[0028] Specifically, the angle between the output end of the second air duct 6 and the horizontal plane is 15° to 30°. This allows the airflow from the second air duct 6 to produce a cutting effect, which helps to quickly blow away dust and particles from the surface of the air-raid shelter door 9 before the coating is applied.

[0029] Specifically, both the first valve 51 and the second valve 61 are solenoid valves. A solenoid valve is a valve that controls fluid flow through electromagnetic force. Its main function is to control the opening and closing of the valve through electrical signals, thereby achieving precise control of fluid flow. Setting the first valve 51 and the second valve 61 as solenoid valves can precisely control the airflow velocity from the first air duct 5 and the second air duct 6, so that they respectively meet the requirements of forward air shower (5-10 m / s) and reverse air shower (10-20 m / s).

[0030] The method of use or working principle of this utility model is as follows:

[0031] First, lay the air-raid shelter door 9 flat and move it onto the supporting structure 1, then... Figure 2 As shown, before spraying, the second air duct 6 is moved to one side of the air-raid shelter door 9 via the reciprocating motion mechanism 2, then the second valve 61 is opened and the first valve 51 is closed. Air is blown by the blower 8, causing the airflow to be directed downwards from the second air duct 6 towards the upper surface of the air-raid shelter door 9. Because the airflow is from the outside towards the surface, a reverse air shower is formed. The reverse air shower has a faster wind speed and stronger impact force, which can quickly blow away dust and particulate matter from the surface of the air-raid shelter door 9. Figure 3 As shown, during spraying, the paint is sprayed downwards from the spray nozzle 4 onto the air-raid shelter door 9 by the spraying machine 7. Simultaneously, the reciprocating mechanism 2 drives the spray nozzle 4 to move back and forth, ensuring the paint covers the entire upper surface of the air-raid shelter door 9. Throughout the process, the first valve 51 and the second valve 61 remain closed, and no air shower is performed. Figure 1 As shown, after spraying, the first air duct 5 is moved to the top of the air-raid shelter door 9 by the reciprocating motion mechanism 2, then the first valve 51 is opened and the second valve 61 is closed. The blower 8 draws air in from the first air duct 5 along the upper surface of the air-raid shelter panel. Since the wind blows from the surface of the object to the outside, a forward air shower is formed. The wind speed of the forward air shower is low, and the wind force distribution is more uniform (flowing along the surface of the air-raid shelter panel), reducing the local wind force. Therefore, dust and particulate matter on the coating surface can be sucked away without damaging the coating layer.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A surface spraying device for a civil defense door, characterized in that, It includes a support structure (1) and a reciprocating motion mechanism (2); the support structure (1) is used to place the air defense door (9), and the two ends of the support structure (1) are respectively provided with brackets (3); the reciprocating motion mechanism (2) is set on the brackets (3), and the reciprocating motion mechanism (2) is provided with a spray pipe (4), a first air duct (5) and a second air duct (6) at intervals. The reciprocating motion mechanism (2) can drive the spray pipe (4), the first air duct (5) and the second air duct (6) to reciprocate along the support structure (1); the input end of the spray pipe (4) is connected to a sprayer (7); the output end of the first air duct (5) is open downwards, and the first air duct (5) is provided with a first valve (51); the output end of the second air duct (6) is open downwards and tilted to one side, and the second air duct (6) is provided with a second valve (61); the input ends of the first air duct (5) and the second air duct (6) are connected to a blower (8).

2. The civil air defense door surface spraying device according to claim 1, characterized in that, The supporting structure (1) is a roller conveyor.

3. The civil air defense door surface spraying device according to claim 1, characterized in that, The reciprocating motion mechanism (2) is a linear motor.

4. The civil air defense door surface spraying device according to claim 1, characterized in that, The output end of the nozzle (4) has a strip-shaped opening, and its length is greater than the width of the air defense door (9).

5. The civil air defense door surface spraying device according to claim 1, characterized in that, The nozzle (4), the first air duct (5), and the second air duct (6) are arranged along the length of the support structure (1), with the first air duct (5) located between the nozzle (4) and the second air duct (6).

6. The civil air defense door surface spraying device according to claim 1, characterized in that, The angle between the output end of the second duct (6) and the horizontal plane is 15° to 30°.

7. The surface spraying device for air-raid shelter doors according to claim 1, characterized in that, Both the first valve (51) and the second valve (61) are solenoid valves.

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