Connecting device for waste liquid recovery system of dry type spraying room and waste liquid recovery system

Abstract

The utility model discloses a connecting device for a waste liquid recovery system of a dry type spray room and the waste liquid recovery system. The connecting device comprises a blow-off pipe communicated with a gas-liquid separator, and the blow-off pipe is inserted into a waste liquid recovery pipe to form an annular gap; the device further comprises a sputtering guide part, and the sputtering guide part is arranged on the blow-off pipe in a sleeving mode and used for blocking and guiding waste liquid sputtered out of the annular gap. When the connecting device for the waste liquid recovery system of the dry type spraying room and the waste liquid recovery system are used, waste liquid separated from the gas-liquid separator can normally flow into the waste liquid recovery system, and meanwhile, the waste liquid can be prevented from splashing into the environment of the dry type spraying room from the joint of the blow-off pipe and the waste liquid recovery pipe; pollution to the environment is avoided, and waste liquid is prevented from being splashed to a vehicle body to affect the quality of the vehicle body.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile painting, in particular to a connecting device for a dry-type spray room waste liquid recovery system and a waste liquid recovery system. Background Art

[0002] Currently, automobile painting is performed in a dry spray booth, where a painting robot is deployed to apply the paint. The robot is equipped with internal cleaning systems, a gun head internal cleaning system, and a mini-pump cleaning system. These systems clean the robot's interior, the gun head, and the mini-pump after the robot completes its painting job. Due to the unique characteristics of the robot's three cleaning systems, three independent piping systems are typically established within the dry spray booth to recycle the wastewater generated during these cleaning processes. During the recycling process, a gas-liquid separator is required to separate the mixture of waste liquid and compressed gas generated by the cleaning of the painting robot, and then the waste liquid discharged from the gas-liquid separator is discharged through a drain pipe to the waste liquid recovery pipe of the waste liquid recovery system, and then recycled through the waste liquid recovery system. Since the waste liquid discharged from the gas-liquid separator contains gas, in actual applications, the drain pipe is generally directly inserted into the waste liquid recovery pipe for pressure relief. However, this method will cause waste liquid to splash into the environment from the connection between the drain pipe and the waste liquid recovery pipe, which does not meet the requirements of occupational health and environmental standards and poses a fire safety hazard. There is also the problem of waste liquid splashing onto the vehicle body and affecting the quality of the vehicle body.

[0003] Therefore, there is an urgent need to develop a connection device and a waste liquid recovery system for a dry spray booth waste liquid recovery system, which can prevent waste liquid from splashing into the working environment of the dry spray booth while ensuring pressure relief, avoiding affecting the vehicle body and the working environment, and at the same time not interfering with other components to avoid occupying the working space. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a connection device and a waste liquid recovery system for a dry spray booth waste liquid recovery system, which can prevent waste liquid from splashing into the working environment of the dry spray booth while ensuring pressure relief, avoid affecting the vehicle body and the working environment, and at the same time do not interfere with other components to avoid occupying the working space.

[0005] The utility model relates to a connecting device for a waste liquid recovery system of a dry-type spray booth, comprising a drain pipe connected to a gas-liquid separator, wherein the drain pipe is inserted into a waste liquid recovery pipe to form an annular gap;

[0006] It also includes a sputtering guide, which is sleeved on the drain pipe and is used to block and drain the waste liquid sputtered from the annular gap; the sputtering guide is set to block and drain the waste liquid sputtered from the annular gap, thereby preventing the waste liquid from splashing into the working environment of the dry spray room and avoiding affecting the vehicle body and the working environment.

[0007] Furthermore, it also includes an outer sleeve, which is arranged corresponding to the end of the waste liquid recovery pipe and is fixedly connected to the sewage pipe; the outer sleeve can protect the sewage pipe.

[0008] Furthermore, the sputtering guide is a frustum structure that is small at the top and large at the bottom. Both ends of the frustum structure are open. A connecting portion is provided at the end of the frustum structure close to the drain pipe. The connecting portion is inserted between the outer sleeve and the drain pipe, and the end with the large opening of the frustum structure faces the waste liquid recovery pipe. By inserting the connecting portion between the drain pipe and the waste liquid recovery pipe, the sputtering guide is installed, making the structure simple and eliminating the need to set up an additional installation structure.

[0009] Furthermore, the relationship between the radius r1 of the large opening end of the truncated cone structure and the radius r2 of the small opening end of the truncated cone structure is: r1=2.5r2.

[0010] Furthermore, a pressure relief port is provided at one end of the waste liquid recovery pipe close to the sputtering guide, and the pressure relief port is arc-shaped; providing the pressure relief port can prevent waste liquid from flowing back from the waste liquid recovery system to the spraying robot, causing pollution to the spraying robot.

[0011] Furthermore, the lowest point of the pressure relief port is higher than the lower edge of the large opening end of the frustum structure; the lowest point of the pressure relief port is higher than the lower edge of the frustum structure, which can effectively block the waste liquid, thereby preventing the waste liquid from splashing into the environment of the dry spray room.

[0012] Furthermore, the relationship between the outer diameter r3 of the waste liquid recovery pipe and the radius r4 of the pressure relief port is: r3=2r4; the radius of the pressure relief port can be designed to ensure the pressure relief effect while avoiding an opening that is too large, causing waste liquid to splash into the dry spray room environment.

[0013] Furthermore, the sewage pipe is a hose, which facilitates the installation of the sewage pipe.

[0014] Furthermore, the length of the outer sleeve is smaller than the length of the drain pipe, and the length L of the drain pipe extending into the waste liquid recovery pipe is: 1.5r3~3r3; the length of the outer sleeve is smaller than the length of the drain pipe, which protects the drain pipe, facilitates the installation and fixation of the sputtering guide, and saves materials. The length of the drain pipe extending into the waste liquid recovery pipe is designed to avoid excessive waste liquid from being splashed into the environment from the annular gap, and also to avoid being affected by the waste liquid recovery system under certain working conditions, causing the drain pipe to be separated from the gas-liquid separator and affecting normal operation.

[0015] The utility model provides a waste liquid recovery system, which comprises a connecting device for the dry-type spray booth waste liquid recovery system.

[0016] The beneficial effects of the utility model are as follows: the connecting device for the waste liquid recovery system of the dry spray room and the waste liquid recovery system of the utility model can, when in use, enable the waste liquid separated at the gas-liquid separator to flow normally into the waste liquid recovery system, and at the same time prevent the waste liquid from splashing from the connection between the drain pipe and the waste liquid recovery pipe into the environment of the dry spray room, thereby avoiding pollution to the environment, and also preventing the waste liquid from splashing onto the vehicle body and affecting the quality of the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 is a structural diagram of the connecting device;

[0020] Figure 3 for Figure 2 Structural diagram from another perspective;

[0021] Figure 4 for Figure 3 sectional view of

[0022] The above drawings include the following reference numerals:

[0023] 1. Drain pipe; 2. Sputtering guide; 3. Waste liquid recovery pipe; 301. Pressure relief port; 4. Outer casing; 5. Toilet cleaning. DETAILED DESCRIPTION

[0024] Figure 1 This is a schematic diagram of the structure of the utility model. Figure 2 is a structural diagram of the connecting device. Figure 3 for Figure 2 Structural diagram from another perspective, Figure 4 for Figure 3 A cross-sectional view of Figure 1-4As shown: This embodiment of a connection device for a dry-type spray booth waste liquid recovery system includes a drain pipe 1 connected to a gas-liquid separator. The drain pipe 1 is inserted into a waste liquid recovery pipe 3 to form an annular gap. When in use, the gas-liquid separator is disposed in a robot toilet 5. The drain pipe 1 is connected to the gas-liquid separator (not shown) to discharge the waste liquid separated by the gas-liquid separator to the waste liquid recovery system. The drain pipe 1 is inserted into the waste liquid recovery pipe 3 of the waste liquid recovery system to form an annular gap to facilitate pressure relief.

[0025] It also includes a sputtering guide 2, which is mounted on the drain pipe 1 and is used to block and drain the waste liquid sputtered from the annular gap; in this structure, the sputtering guide 2 can be a cover structure, and the shape of the cover can be a truncated cone, a frustum, etc. The sputtering guide 2 is mounted on the drain pipe 1 and is used to block and drain the waste liquid sputtered from the annular gap, thereby preventing the waste liquid from splashing into the working environment of the dry spray room, avoiding affecting the environment, and at the same time preventing the waste liquid from splashing onto the body of the vehicle being painted in the dry spray room, avoiding affecting the quality of the vehicle body.

[0026] In the prior art, when recycling waste liquid, it is necessary to use a gas-liquid separator to separate the mixture of waste liquid and compressed gas generated by the cleaning of the painting robot, and then discharge the waste liquid discharged from the gas-liquid separator through the sewage pipe 1 to the waste liquid recovery pipe 3 of the waste liquid recovery system, and then recycle it through the waste liquid recovery system. Since the waste liquid discharged from the gas-liquid separator contains gas, in actual application, the sewage pipe 1 is generally directly inserted into the waste liquid recovery pipe 3 for pressure relief treatment, but this method will cause waste liquid to flow from the sewage pipe 1 and the waste liquid recovery pipe 3. The connection splashes into the environment, which does not meet the requirements of occupational health and environmental standards and poses a fire safety hazard. There is also the problem of waste liquid splashing onto the vehicle body and affecting the quality of the vehicle body. The connection device and waste liquid recovery system for the dry spray room waste liquid recovery system of the utility model can, when in use, allow the waste liquid separated from the gas-liquid separator to flow normally into the waste liquid recovery system, and at the same time, avoid waste liquid from splashing from the connection between the drain pipe 1 and the waste liquid recovery pipe 3 into the environment of the dry spray room, avoid pollution to the environment, and also avoid waste liquid splashing onto the vehicle body and affecting the quality of the vehicle body.

[0027] In this embodiment, an outer sleeve 4 is also included, which is arranged corresponding to the end of the waste liquid recovery pipe 3 and is fixedly connected to the sewage pipe 1; the outer sleeve 4 is arranged corresponding to the end of the waste liquid recovery pipe 3 (the end is the end close to the sewage pipe 1). Generally, the sewage pipe 1 is a hose structure, and the outer sleeve 4 is made of hard material, which can be a plastic pipe or a steel pipe, etc. By arranging the outer sleeve 4 on the outside of the sewage pipe 1, the sewage pipe 1 can be protected.

[0028] In this embodiment, the sputtering guide 2 is a truncated cone structure with a small top and a large bottom. Both ends of the truncated cone structure are open. A connecting portion is provided at one end of the truncated cone structure close to the drain pipe 1. The connecting portion is inserted between the outer sleeve 4 and the drain pipe 1. The end with the large opening of the truncated cone structure faces the waste liquid recovery pipe 3. The sputtering guide 2 is a truncated cone structure with an opening at both ends and a small top and a large bottom (the upper and lower parts are relative to each other). Figure 2 The sputtering guide 2 is arranged corresponding to the annular gap. At the same time, when connecting, the connecting part is directly inserted between the sewage pipe 1 and the outer sleeve 4, and the connecting part is pressed by gravity. There is no need to set up an additional structure, so that the overall structure is compact and simple. The end of the sputtering guide 2 facing the waste liquid recovery pipe 3 is an end with a large opening. The sputtering guide 2 is set to a frustum structure. The inner wall of the frustum structure can block the sputtered waste liquid and allow the waste liquid to flow down along the inner wall.

[0029] In this embodiment, the radius of the large opening end of the frustum structure is r1, and the relationship between the radius of the small opening end of the frustum structure is r2: r1 = 2.5r2; the radius of the large opening end of the frustum structure is designed to ensure that the direction and position of the waste liquid splashing are controllable. Preferably, in actual production, the radius of the large opening end of the frustum structure can be 5 to 10 mm.

[0030] In this embodiment, a pressure relief port 301 is provided at one end of the waste liquid recovery pipe 3 close to the sputtering guide 2, and the pressure relief port 301 is arc-shaped; providing the pressure relief port 301 can avoid the pressure imbalance caused by the bottom surface of the sputtering guide 2 and the top of the waste liquid recovery pipe 3 being closed, so that the waste liquid is reversed from the recovery pipeline of the waste liquid recovery system connected to the bottom of the waste liquid recovery pipe 3 to pollute the painting robot (that is, it is reversed from the cleaning toilet 5 to pollute the painting robot).

[0031] In this embodiment, the lowest point of the pressure relief port 301 is higher than the lower edge of the large opening end of the frustum structure; the lowest point of the pressure relief port 301 is higher than the lower edge of the large opening end of the frustum structure (the length of the higher point can be 0.5r1), and the pressure relief port 301 opens toward the sewage pipe 1. The lowest point of the pressure relief port 301 is at the end away from the sewage pipe 1, which can achieve pressure relief while allowing the waste liquid to be blocked by the sputtering guide 2 and drained to the receiving device below (not shown in the figure, it can be a receiving tank, etc.).

[0032] In this embodiment, the relationship between the outer diameter r3 of the waste liquid recovery pipe 3 and the radius r4 of the pressure relief port 301 is: r3=2r4; by designing the radius of the pressure relief port 301, it is possible to ensure pressure relief while avoiding an opening that is too large, causing waste liquid to splash into the environment of the dry spray room.

[0033] In this embodiment, the sewage pipe 1 is a hose, which facilitates the installation of the sewage pipe 1.

[0034] In this embodiment, the length of the outer sleeve 4 is smaller than the length of the sewage pipe 1, and the length L of the sewage pipe 1 extending into the waste liquid recovery pipe 3 is: 1.5r3~3r3; the length of the outer sleeve 4 is smaller than the length of the sewage pipe 1, which protects the sewage pipe 1, facilitates the installation and fixation of the sputtering guide 2, and saves materials. The length of the sewage pipe 1 extending into the waste liquid recovery pipe 3 is designed to avoid the sewage pipe 1 extending too short, resulting in excessive waste liquid splashing into the environment from the annular gap. At the same time, it can also avoid the sewage pipe 1 extending too long, which is affected by the waste liquid recovery system under certain working conditions, causing the sewage pipe 1 to be reversed out of the robot toilet cleaning 5 (the upper opening of the robot toilet cleaning), affecting normal operation.

[0035] The waste liquid recovery system of this embodiment includes the connecting device for the dry spray room waste liquid recovery system; by applying the connecting device for the dry spray room waste liquid recovery system to the waste liquid recovery system, the problem of waste liquid splashing when the waste liquid recovery system is working is avoided, the occupational health and environmental standards are met, and the problem of waste liquid splashing onto components and affecting the quality of components is also avoided.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A connection device for a dry spray booth waste liquid recovery system, characterized by: It includes a sewage pipe connected to the gas-liquid separator, wherein the sewage pipe is inserted into a waste liquid recovery pipe to form an annular gap; It also includes a sputtering guide, which is sleeved on the sewage pipe and is used to block and drain the waste liquid sputtered from the annular gap.

2. The connection device for the dry-type spray booth waste liquid recovery system according to claim 1, characterized in that: It also includes an outer sleeve, which is arranged corresponding to the end of the waste liquid recovery pipe and is fixedly connected to the sewage pipe.

3. The connection device for the dry-type spray booth waste liquid recovery system according to claim 2, characterized in that: The sputtering guide is a frustum structure that is small at the top and large at the bottom. Both ends of the frustum structure are open. A connecting portion is provided at one end of the frustum structure close to the sewage pipe. The connecting portion is inserted between the outer sleeve and the sewage pipe. The end of the frustum structure with the large opening faces the waste liquid recovery pipe.

4. The connection device for a dry-type spray booth waste liquid recovery system according to claim 3, characterized in that: The relationship between the radius r1 of the large opening end of the truncated cone structure and the radius r2 of the small opening end of the truncated cone structure is: r1=2.5r2.

5. The connection device for the dry-type spray booth waste liquid recovery system according to claim 3, characterized in that: A pressure relief port is provided at one end of the waste liquid recovery pipe close to the sputtering guide, and the pressure relief port is arc-shaped.

6. The connection device for a dry-type spray booth waste liquid recovery system according to claim 5, characterized in that: The lowest point of the pressure relief port is higher than the lower edge of one end of the large opening of the frustum structure.

7. The connection device for a dry-type spray booth waste liquid recovery system according to claim 5, characterized in that: The relationship between the outer diameter r3 of the waste liquid recovery pipe and the radius r4 of the pressure relief port is: r3=2r4.

8. The connection device for a dry-type spray booth waste liquid recovery system according to claim 1, characterized in that: The sewage pipe is a hose.

9. The connection device for a dry-type spray booth waste liquid recovery system according to claim 7, characterized in that: The length of the outer sleeve is smaller than that of the sewage pipe, and the length L of the sewage pipe extending into the waste liquid recovery pipe is 1.5r3 to 3r3.

10. A waste liquid recovery system, characterized in that: The invention comprises a connecting device for a dry spray room waste liquid recovery system according to any one of claims 1 to 9.

Images