A harmful waste gas purification system for sheet metal painting production line

Abstract

This utility model discloses a harmful waste gas purification system for a sheet metal painting production line, relating to the field of waste gas purification technology. It includes a conveying pipeline connected to a fan, with the fan's outlet connected to a waste gas purification device. Multiple segmented pipes are connected at intervals along the conveying pipeline. In this harmful waste gas purification system for sheet metal painting production lines, when a paint mist sensor detects that the concentration at a certain station on the production line exceeds a threshold, a motor drives a sealing cover to open, opening the segmented pipes to draw in waste gas from that area. This achieves targeted suction in that area, preventing localized pollution accumulation. Once the paint mist sensor detects that the concentration at a certain station on the production line has returned to normal, the motor drives the sealing cover to close the suction port or leave it partially open, effectively preventing waste of suction power in that area.

Description

Technical Field

[0001] This utility model relates to the field of waste gas purification technology, specifically a harmful waste gas purification system for sheet metal painting production lines. Background Technology

[0002] In sheet metal painting production lines, the purification of harmful waste gases (including paint mist particles, VOCs, etc.) relies on fan suction and pipeline transportation. Existing harmful waste gas purification systems use a single fan to power the entire production line. When a high concentration of emissions suddenly occurs at a workstation in a sheet metal painting production line, the system cannot selectively activate the suction power in that area, resulting in localized pollution accumulation. Furthermore, when the fan powers the suction power of the entire production line, the suction power is wasted when a part of the production line is not operating, failing to maximize the utilization of the fan's suction power. Therefore, this application proposes a harmful waste gas purification system for sheet metal painting production lines to solve the above problems. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a harmful waste gas purification system for sheet metal painting production lines, which solves the technical problems mentioned in the background.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a harmful waste gas purification system for a sheet metal painting production line, including a conveying pipe, a fan connected to the conveying pipe, and a waste gas purification device connected to the fan's outlet. Multiple segmented pipes are connected at intervals along the conveying pipe. A lifting pipe is provided at the bottom of each segmented pipe. A paint mist sensor is installed at the bottom of each lifting pipe. A telescopic pipe is connected between the top of the lifting pipe and the bottom of each segmented pipe. Two sliding rods are provided on the lifting pipe, and the two sliding rods are slidably connected to two sliding grooves at the bottom of each segmented pipe. A sealing cover is provided at the bottom port of the lifting pipe, and the sealing cover can be closed, opened, or partially opened by a motor drive.

[0007] Preferably, the conveying pipe and the segmented pipe are installed at the top of the sheet metal painting production line workshop.

[0008] Preferably, the multiple segmented pipes are all vertically distributed, and the lifting pipes correspond to different positions on the sheet metal painting production line by adjusting the lifting of the slide rod.

[0009] Preferably, the paint mist sensor and motor at the bottom of each of the lifting pipes form a group, and multiple groups of paint mist sensors and motors, fans, and exhaust gas purification equipment are electrically connected to the control terminal.

[0010] Preferably, the fan and exhaust gas purification equipment are installed outside the sheet metal painting production line workshop.

[0011] Preferably, the paint mist sensor is located at a distance of more than 1m from the bottom of the lifting pipe, and the paint mist sensor is within a near-field range of 1-1.5m from the painting station.

[0012] (III) Beneficial Effects

[0013] The beneficial effects of this utility model are as follows:

[0014] This type of sheet metal painting production line uses a harmful waste gas purification system. When the paint mist sensor detects that the concentration at a certain station of the sheet metal painting production line is greater than the threshold, the motor drives the sealing cover to open, so that the segmented pipe is in the open state to suck up the waste gas in that area. This achieves directional opening of the suction force in that area, avoiding the accumulation of local pollution. After the paint mist sensor detects that the concentration at a certain station of the sheet metal painting production line has returned to normal, the motor drives the sealing cover to close the suction port or leave it in a half-open state, effectively avoiding the waste of suction force in that area. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the segmented pipeline of this utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the segmented pipeline of this utility model, viewed from below.

[0018] In the diagram: 1. Conveying pipe, 2. Fan, 3. Waste gas purification equipment, 4. Segmented pipe, 5. Paint mist sensor, 6. Control terminal, 7. Lifting pipe, 8. Telescopic pipe, 9. Slide bar, 10. Sealing cover, 11. Motor. Detailed Implementation

[0019] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] like Figure 1-3As shown, this utility model provides a technical solution: a harmful waste gas purification system for a sheet metal painting production line, including a conveying pipe 1, a fan 2 connected to the conveying pipe 1, and a waste gas purification device 3 connected to the outlet of the fan 2. The fan 2 and the waste gas purification device 3 are installed outside the sheet metal painting production line workshop. Multiple segmented pipes 4 are connected at intervals on the conveying pipe 1. The conveying pipe 1 and the segmented pipes 4 are installed at the top of the sheet metal painting production line workshop. A lifting pipe 7 is installed at the bottom of the segmented pipes 4. A paint mist sensor 5 is installed at the bottom of each lifting pipe 7. The paint mist sensor 5 is located at a distance of more than 1m from the bottom of the lifting pipe 7 to avoid close proximity to the lifting pipe 7. Too close a distance would affect monitoring, and the paint mist sensor 5 is within a 1-1.5m near-field range of the painting station. To ensure the paint mist sensor 5 is within the monitoring range, a telescopic pipe 8 connects the top of the lifting pipe 7 to the bottom of the segmented pipe 4. Two sliding rods 9 are installed on the lifting pipe 7, and these two sliding rods 9 are slidably connected to two sliding grooves at the bottom of the segmented pipe 4. Fastening bolts are installed at the sliding grooves to fix the sliding rods 9. Multiple segmented pipes 4 are vertically distributed, and the lifting of multiple lifting pipes 7 corresponds to different positions on the sheet metal painting production line by adjusting the lifting of the sliding rods 9. A sealing cover 10 is installed at the bottom end of the lifting pipe 7, and the sealing cover 10 can be closed, opened, or closed by a motor 11. In the semi-open state, by adjusting the height of the slide bar 9, the lifting pipe 7 is adjusted to a preset height, within a near-field range of 1-1.5m from the painting station. The paint mist sensor 5 continuously collects the concentration of exhaust gas at the station, and the control terminal 6 receives, analyzes, and processes the data from the paint mist sensor 5 in real time. Under normal conditions, multiple sealing covers 10 can be partially opened at intervals, allowing for the normal extraction of exhaust gas from the sheet metal painting production line. The paint mist sensor 5 and motor 11 at the bottom of each lifting pipe 7 form a group. Under the control of the control terminal 6, the data transmitted back from the paint mist sensor 5 controls the motor 11 to open and close the sealing cover 10 in real time. Multiple groups of paint mist sensors 5 and motor 11... The fan 2, exhaust gas purification equipment 3, and control terminal 6 are electrically connected. When the paint mist sensor 5 detects that the concentration at a certain station of the sheet metal painting production line is greater than the threshold, the motor 11 will drive the sealing cover 10 at that location to open. The fan 2 is a variable frequency fan that increases speed and suction force, thereby directional opening of the suction force in that area to avoid local pollution accumulation. The extracted exhaust gas is purified by the exhaust gas purification equipment 3 and then discharged. After the paint mist sensor 5 detects that the concentration at a certain station of the sheet metal painting production line has returned to normal, the motor 11 can drive the sealing cover 10 to close the suction port or leave it in a half-open state, effectively avoiding waste of suction force in that area. At the same time, the fan 2 reduces the suction force to save energy and reduce consumption.

[0021] The operational steps for this application are as follows:

[0022] By adjusting the height of the slide bar 9, the lifting pipe 7 is adjusted to the preset height, within a near-field range of 1-1.5m from the painting station. The paint mist sensor 5 continuously collects the concentration of exhaust gas at the station. The control terminal 6 receives, analyzes, and processes the data from the paint mist sensor 5 in real time. Under normal conditions, multiple sealing covers 10 can be partially opened at intervals, and the sealing covers 10 can be in a half-open state to extract exhaust gas from the sheet metal painting production line. When the paint mist sensor 5 detects that the concentration at a certain station of the sheet metal painting production line is greater than the threshold, it will drive the sealing cover 10 at that location to open through the motor 11, and the fan 2, which is a variable frequency fan, will speed up to increase the suction force, thereby achieving directional opening of the suction force in that area and avoiding local pollution accumulation. The extracted exhaust gas is discharged after being purified by the exhaust gas purification equipment 3. After the paint mist sensor 5 detects that the concentration at a certain station of the sheet metal painting production line has returned to normal, it can drive the sealing cover 10 to close the suction port or remain in a half-open state through the motor 11, effectively avoiding waste of suction force in that area. At the same time, the fan 2 reduces the suction force to save energy and reduce consumption.

[0023] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] In this utility model, unless otherwise explicitly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A harmful waste gas purification system for a sheet metal painting production line, characterized in that: The system includes a conveying pipe (1), which is connected to a fan (2), and the outlet of the fan (2) is connected to a waste gas purification device (3). Multiple segmented pipes (4) are connected at intervals on the conveying pipe (1). A lifting pipe (7) is provided at the bottom of each segmented pipe (4). A paint mist sensor (5) is installed at the bottom of each lifting pipe (7). A telescopic pipe (8) is connected between the top of the lifting pipe (7) and the bottom of the segmented pipe (4). Two sliding rods (9) are provided on the lifting pipe (7), and the two sliding rods (9) are slidably connected to two sliding grooves at the bottom of the segmented pipe (4). A sealing cover (10) is provided at the bottom port of the lifting pipe (7), and the sealing cover (10) is driven by a motor (11).

2. The harmful waste gas purification system for a sheet metal painting production line according to claim 1, characterized in that: The conveying pipe (1) and the segmented pipe (4) are installed at the top of the sheet metal painting production line workshop.

3. The harmful waste gas purification system for a sheet metal painting production line according to claim 2, characterized in that: The multiple segmented pipes (4) are all vertically distributed, and the multiple lifting pipes (7) correspond to different positions on the sheet metal painting production line by adjusting the lifting of the slide bar (9).

4. The harmful waste gas purification system for a sheet metal painting production line according to claim 1, characterized in that: Each of the lifting pipes (7) has a paint mist sensor (5) and a motor (11) at the bottom, and multiple sets of paint mist sensors (5) and motors (11), fans (2), exhaust gas purification equipment (3) are electrically connected to the control terminal (6).

5. A harmful waste gas purification system for a sheet metal painting production line according to claim 1, characterized in that: The fan (2) and the exhaust gas purification equipment (3) are installed outside the sheet metal painting production line workshop.

6. The harmful waste gas purification system for a sheet metal painting production line according to claim 1, characterized in that: The paint mist sensor (5) is located at a distance of more than 1m from the bottom of the lifting pipe (7), and the paint mist sensor (5) is within a near-field range of 1-1.5m from the painting station.

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