Remote pipeline conveying device and wastewater transportation system of plating line

Abstract

The utility model discloses a long-distance pipeline conveying device and a waste water transportation system of a plating line, the device comprises a conveying pipeline, a conveying pump, a control assembly and a switch valve, the conveying pipeline is communicated with a production line waste water collecting tank and a waste water barrel, the conveying pump is arranged near production line waste water, and the control assembly is located between the conveying pump and the waste water barrel. The distance between the control assembly and the conveying pump does not exceed 20 m, the switch valve is arranged at the outlet end of the conveying pipeline, the control assembly is electrically connected with the conveying pump, a first pressure threshold value and a second pressure threshold value are stored in the control assembly, and when the liquid level of the waste water bucket is lower than the first height, the switch valve is kept open; when the pressure in the conveying pipe is smaller than a second pressure threshold value, the control assembly controls the conveying pump to start; when the liquid level of the waste water barrel is higher than a set first height, the switch valve is kept closed, and when the pressure in the conveying pipe is larger than a first pressure threshold value, the control assembly controls the conveying pump to be closed. The device can solve the problem that control is inconvenient in long-distance pipeline conveying.

Description

Technical Field

[0001] This utility model belongs to the technical field of pipeline transportation, specifically relating to a long-distance pipeline transportation device and a wastewater transportation system for an electroplating line including the long-distance pipeline transportation device. Background Technology

[0002] Electroplating lines, oxidation lines and other surface treatment equipment generate wastewater during production. This wastewater must be transported to wastewater tanks in the wastewater treatment area via pumps and pipelines.

[0003] In existing technology, the wastewater tank is equipped with a level gauge and a switching valve. The opening and closing of the transfer pump is controlled by the switching valve and the level signal. The transfer pump is located near the wastewater collection tank. Typically, factories place the wastewater treatment area (wastewater tank) in a relatively remote location within the factory area, away from people and production workshops. The transfer distance can exceed 200 meters, and in some cases even reach 500 to 600 meters. The transfer pump is connected to the switching valve and level gauge via electrical wires to receive the switching valve's opening and closing and the level signal from the level gauge. When the transfer distance is too long, it becomes difficult to connect the transfer pump to the switching valve and level gauge via electrical wires. Firstly, the excessively long wires are difficult to lay out, and when they fail, it takes more time to locate the fault. Furthermore, the distance between the control components and the transfer pump may lead to unresponsive control or malfunctions. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the above-mentioned deficiencies in the existing technology by providing a long-distance pipeline transportation device and a wastewater transportation system for electroplating lines. The long-distance pipeline transportation device can effectively solve the problem of inconvenient control in long-distance pipeline transportation.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] A long-distance pipeline conveying device for conveying wastewater generated from a production line includes a conveying pipeline, a conveying pump, a control component, and a switching valve. One end of the conveying pipeline is connected to a wastewater collection tank located in a first area, and the other end is connected to a wastewater tank located in a second area, for conveying wastewater from the production line wastewater collection tank to the wastewater tank. The conveying pump is located at the end of the conveying pipeline near the production line wastewater collection tank. The control component is located between the conveying pump and the wastewater tank, and the distance between the control component and the conveying pump does not exceed 20m. The switching valve is located at the end of the conveying pipeline near the wastewater tank. The control component is electrically connected to the conveying pump and internally stores a first pressure threshold and a second pressure threshold, wherein the first pressure threshold is greater than the second pressure threshold. When the liquid level in the wastewater tank is lower than a set first height, the switching valve remains open. When the pressure in the conveying pipeline is less than the second pressure threshold, the control component controls the conveying pump to start. When the liquid level in the wastewater tank is higher than the set first height, the switching valve remains closed. When the pressure in the conveying pipeline is greater than the first pressure threshold, the control component controls the conveying pump to shut down.

[0007] Preferably, the control component includes a first control unit and a second control unit. The first control unit includes a first monitor and a first switch. The first monitor is electrically connected to the first switch. The first monitor stores a first pressure threshold. When the first monitor detects that the pressure in the delivery pipeline is greater than the first pressure threshold, it sends a first signal to the first switch. The first switch is also electrically connected to the delivery pump and is used to control the delivery pump to shut down after receiving the first signal. The second control unit includes a second monitor and a second switch. The second monitor is electrically connected to the second switch. The second monitor stores a second pressure threshold. When the second monitor detects that the pressure in the delivery pipeline is less than the second pressure threshold, it sends a second signal to the second switch. The second switch is also electrically connected to the delivery pump and is used to control the delivery pump to turn on after receiving the second signal.

[0008] Preferably, the difference between the first pressure threshold and the second pressure threshold is in the range of 0.2 to 0.3 MPa.

[0009] Preferably, the distance between the first region and the second region is greater than 200m.

[0010] Preferably, the switching valve is an electric valve.

[0011] Preferably, the control component further includes a controller and a liquid level sensor. The liquid level sensor is disposed inside the wastewater tank to sense the liquid level height inside the wastewater tank. The controller is electrically connected to the liquid level sensor. When the liquid level sensor detects that the liquid level in the wastewater tank is lower than a first height, it sends a third signal to the controller. The controller is also electrically connected to the switching valve to control the switching valve to open after receiving the third signal. When the liquid level sensor detects that the liquid level in the wastewater tank is higher than the first height, it sends a fourth signal to the controller. After receiving the fourth signal, the controller controls the switching valve to close.

[0012] This utility model also provides a wastewater transportation system for an electroplating line, including a production line wastewater collection tank, a wastewater bucket, and the aforementioned long-distance pipeline transportation device. The production line wastewater collection tank is located at the end of the production line and is used to collect the wastewater generated by the production line. The wastewater bucket is used to store the wastewater.

[0013] The long-distance pipeline transportation device of this utility model changes the control method of the transportation pump. Instead of relying on the feedback signal of the liquid level gauge and the switch valve on the wastewater tank side to control the transportation pump, it adopts a separate control switch. The control switch is located near the transportation pump, which solves the problem of redundant signal lines in long-distance pipeline transportation and makes the control of the transportation pump simple and precise. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the long-distance pipeline transportation device in Embodiment 1 of the present invention.

[0015] In the diagram: 100-transportation pipe, 200-first control unit, 300-second control unit, 400-wastewater tank, 500-switch valve, 600-liquid level sensor, 700-production line wastewater collection tank, 800-transportation pump. Detailed Implementation

[0016] The technical solutions of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of this utility model.

[0017] In the description of this utility model, it should be noted that the terms "above" and other indications of orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience and simplification of description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection," "setting," "installation," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] This utility model provides a long-distance pipeline conveying device for conveying wastewater generated by a production line. It includes a conveying pipeline, a conveying pump, a control component, and a switching valve. One end of the conveying pipeline is connected to a wastewater collection tank located in a first area, and the other end is connected to a wastewater tank located in a second area, for conveying wastewater from the production line wastewater collection tank to the wastewater tank. The conveying pump is located at the end of the conveying pipeline near the production line wastewater collection tank. The control component is located between the conveying pump and the wastewater tank, and the distance between the control component and the conveying pump does not exceed 20m. The switching valve is located at the end of the conveying pipeline near the wastewater tank. The control component is electrically connected to the conveying pump and internally stores a first pressure threshold and a second pressure threshold, where the first pressure threshold is greater than the second pressure threshold. When the liquid level in the wastewater tank is lower than a set first height, the switching valve remains open. When the pressure in the conveying pipeline is less than the second pressure threshold, the control component controls the conveying pump to start. When the liquid level in the wastewater tank is higher than the set first height, the switching valve remains closed. When the pressure in the conveying pipeline is greater than the first pressure threshold, the control component controls the conveying pump to shut down.

[0021] This utility model also provides a wastewater transportation system for an electroplating line, including a production line wastewater collection tank, a wastewater bucket, and the aforementioned long-distance pipeline transportation device. The production line wastewater collection tank is located at the end of the production line and is used to collect the wastewater generated by the production line. The wastewater bucket is used to store the wastewater.

[0022] Example 1

[0023] like Figure 1As shown, this embodiment discloses a long-distance pipeline conveying device for conveying wastewater generated from electroplating or oxidation production lines. The device includes a conveying pipeline 100, a conveying pump 800, a control component, and a switching valve 500. One end of the conveying pipeline 100 is connected to a production line wastewater collection tank 700 located in a first area, and the other end is connected to a wastewater tank 400 located in a second area. This conveying pipeline 100 is used to transport wastewater from the production line wastewater collection tank 700 to the wastewater tank 400. The conveying pump 800 is located at one end of the conveying pipeline 100 near the production line wastewater collection tank 700. The control component is located between the conveying pump 800 and the wastewater tank 400, and the distance between the control component and the conveying pump 800 does not exceed 20m. The switching valve 500 is located at one end of the conveying pipeline 100 near the wastewater tank 400 (near the outlet of the conveying pipeline 100). The control component is electrically connected to the conveying pump 800 and internally stores a first pressure threshold and a second pressure threshold.

[0024] Wherein, the first pressure threshold is greater than the second pressure threshold. When the liquid level in the wastewater tank 400 is lower than the set first height, the switch valve 500 remains open. Since the switch valve 500 of the conveying pipe 100 is in the open state at this time, the internal pressure value is small. When the pressure in the conveying pipe is less than the second pressure threshold, the control component controls the conveying pump 800 to start, thereby conveying the wastewater in the production line wastewater collection tank 700 to the wastewater tank 400.

[0025] When the liquid level in the wastewater tank 400 exceeds the set first height (indicating that the wastewater tank 400 is about to be full), the switch valve 500 remains closed. Since the switch valve 500 of the delivery pipeline 100 is closed at this time, the internal pressure continuously increases until the pressure inside the delivery pipeline 100 exceeds the first pressure threshold. At this point, the control component controls the delivery pump 800 to shut down. At this time, the delivery pipeline 100 stops delivering wastewater into the wastewater tank 400.

[0026] Furthermore, the difference between the first pressure threshold and the second pressure threshold ranges from 0.2 to 0.3 MPa.

[0027] In this embodiment, the first pressure threshold is 0.4 MPa, and the second pressure threshold is 0.1 MPa. That is, when the pressure in the pipeline is below 0.1 MPa, the control component starts the delivery pump 800; when the pressure in the pipeline is above 0.4 MPa, the control component shuts down the delivery pump 800. It is worth noting that the first and second pressure thresholds need to be determined after testing based on actual conditions.

[0028] like Figure 1As shown, specifically, the control components include a first control unit 200 and a second control unit 300. The first control unit 200 includes a first monitor and a first switch. The first monitor and the first switch are electrically connected. The first monitor stores a first pressure threshold. When the first monitor detects that the pressure in the delivery pipeline 100 is greater than the first pressure threshold, it sends a first signal to the first switch. The first switch is also electrically connected to the delivery pump 800 and is used to control the delivery pump 800 to shut down after receiving the first signal.

[0029] Specifically, the second control unit 300 includes a second monitor and a second switch. The second monitor and the second switch are electrically connected. The second monitor stores a second pressure threshold. When the second monitor detects that the pressure in the delivery pipeline 100 is less than the second pressure threshold, it sends a second signal to the second switch. The second switch is also electrically connected to the delivery pump 800 and is used to control the delivery pump 800 to start after receiving the second signal.

[0030] In this embodiment, the conveying pipeline 100 is for long-distance transportation, and the distance between the first area and the second area is greater than 200m, that is, the length of the conveying pipeline 100 is greater than 200m.

[0031] Optionally, the switching valve 500 is an electric valve.

[0032] Furthermore, the control assembly also includes a controller and a liquid level sensor 600. The liquid level sensor 600 is installed inside the wastewater tank 400 to sense the liquid level height inside the wastewater tank 400. Specifically, the first height measured by the liquid level sensor 600 can be selected according to actual conditions. In this embodiment, the first height is a position 150mm from the top of the wastewater tank 400. The controller is electrically connected to the liquid level sensor 600. When the liquid level sensor 600 detects that the liquid level in the wastewater tank 400 is lower than the first height, it sends a third signal to the controller. The controller is also electrically connected to the switching valve 500 to control the switching valve 500 to open after receiving the third signal. When the liquid level sensor 600 detects that the liquid level in the wastewater tank 400 is higher than the first height, it sends a fourth signal to the controller. After receiving the fourth signal, the controller controls the switching valve 500 to close.

[0033] The working principle of the long-distance pipeline transportation device in this embodiment is as follows:

[0034] In the initial state, there is no wastewater in the conveying pipeline 100 and the pressure is low, below the second pressure threshold. The second switch controls the conveying pump 800 to start. At this time, the liquid level in the wastewater tank 400 is lower than the first height. The controller controls the electric valve to open, and the conveying pump 800 conveys the wastewater from the production line wastewater collection tank 700 along the conveying pipeline 100 to the wastewater tank 400.

[0035] When the liquid level in the wastewater tank 400 rises to the first height, the liquid level sensor 600 sends a fourth signal to the controller, which then controls the switch valve 500 to close. After that, the pressure in the delivery pipeline 100 continues to rise until it reaches the first pressure threshold. At this point, the first switch controls the delivery pump 800 to close.

[0036] The long-distance pipeline transportation device of this invention changes the control method of the transportation pump 800. Instead of relying on the feedback signals from the level gauge on the wastewater tank 400 and the switching valve 500 to control the pump 800, it uses a separate control switch located near the pump 800. This solves the problem of long signal lines in long-distance pipeline transportation and makes the control of the pump 800 simple and precise. Furthermore, by using the feedback from the level sensor 600 to control the opening and closing of the switching valve 500, and through the coordination of the control switch and the pump 800, fully automated and precise control of long-distance pipeline transportation is achieved.

[0037] Example 2

[0038] This embodiment discloses a wastewater transportation system for an electroplating line, including a production line wastewater collection tank 700, a wastewater bucket 400, and a long-distance pipeline transportation device as described in Embodiment 1. The production line wastewater collection tank 700 is located at the end of the production line and is used to collect the wastewater generated by the production line. The wastewater bucket 400 is used to store the wastewater.

[0039] Specifically, the production line wastewater collection tank 700 is a tank-shaped container used to collect and temporarily store the wastewater generated by the production line. The wastewater is then transported over a long distance to the wastewater tank 400 via the conveying pipe 100. The start and stop of the conveying pump 800 are controlled by the first control unit 200 and the second control unit 300, and the start of the switching valve 500 is controlled by the liquid level sensor 600 and the controller.

[0040] In this embodiment, the wastewater transportation system of the electroplating line achieves fully automated and precise control of long-distance pipeline transportation by using the feedback control of the liquid level sensor 600 to open and close the switching valve 500, and by cooperating with the control switch and the delivery pump 800. This effectively solves the problem of long-distance transportation of wastewater from the electroplating line.

[0041] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.

Claims

1. A long-distance pipeline conveying device for conveying wastewater generated from a production line, characterized in that, Includes a delivery pipeline (100), a delivery pump (800), control components, and a switching valve (500). One end of the conveying pipe (100) is connected to the production line wastewater collection tank (700) located in the first area, and the other end is connected to the wastewater tank (400) located in the second area, for conveying wastewater from the production line wastewater collection tank (700) to the wastewater tank (400). The delivery pump (800) is located at one end of the delivery pipeline (100) near the wastewater collection tank (700) of the production line. The control component is located between the delivery pump (800) and the wastewater tank (400), and the distance between the control component and the delivery pump (800) does not exceed 20m. The switch valve (500) is located at one end of the conveying pipe (100) near the wastewater tank (400). The control component is electrically connected to the delivery pump (800) and stores a first pressure threshold and a second pressure threshold internally. The first pressure threshold is greater than the second pressure threshold. When the liquid level in the wastewater tank (400) is lower than the set first height, the switch valve (500) remains open. When the pressure in the delivery pipe is less than the second pressure threshold, the control component controls the delivery pump (800) to start. When the liquid level in the wastewater tank (400) is higher than the set first height, the switch valve (500) remains closed. When the pressure in the delivery pipe is greater than the first pressure threshold, the control component controls the delivery pump (800) to shut down.

2. The long-distance pipeline transportation device according to claim 1, characterized in that, The control assembly includes a first control unit (200) and a second control unit (300). The first control unit (200) includes a first monitor and a first switch. The first monitor is electrically connected to the first switch. The first monitor stores a first pressure threshold. When the first monitor detects that the pressure in the delivery pipeline (100) is greater than the first pressure threshold, it sends a first signal to the first switch. The first switch is also electrically connected to the delivery pump (800) and is used to control the delivery pump (800) to shut down after receiving the first signal. The second control unit (300) includes a second monitor and a second switch. The second monitor is electrically connected to the second switch. The second monitor stores a second pressure threshold. When the second monitor detects that the pressure in the delivery pipe (100) is less than the second pressure threshold, it sends a second signal to the second switch. The second switch is also electrically connected to the delivery pump (800) and is used to control the delivery pump (800) to start after receiving the second signal.

3. The long-distance pipeline transportation device according to claim 2, characterized in that, The difference between the first pressure threshold and the second pressure threshold is in the range of 0.2 to 0.3 MPa.

4. The long-distance pipeline transportation device according to claim 3, characterized in that, The distance between the first region and the second region is greater than 200m.

5. The long-distance pipeline transportation device according to claim 1, characterized in that, The switching valve (500) is an electric valve.

6. The long-distance pipeline transportation device according to claim 2, characterized in that, The control assembly also includes a controller and a liquid level sensor (600), which is disposed inside the wastewater tank (400) and used to sense the liquid level height inside the wastewater tank (400). The controller is electrically connected to the liquid level sensor (600). When the liquid level sensor (600) detects that the liquid level in the wastewater tank (400) is lower than the first height, it sends a third signal to the controller. The controller is also electrically connected to the switching valve (500) and is used to control the switching valve (500) to open after receiving the third signal. When the liquid level sensor (600) detects that the liquid level in the wastewater tank (400) is higher than the first height, it sends a fourth signal to the controller. After receiving the fourth signal, the controller controls the switch valve (500) to close.

7. A wastewater transportation system for an electroplating line, comprising a production line wastewater collection tank (700) and a wastewater bucket (400), characterized in that, It also includes the long-distance pipeline transportation device according to any one of claims 1-6, The production line wastewater collection tank (700) is located at the end of the production line and is used to collect the wastewater generated by the production line. The wastewater tank (400) is used to store the wastewater.

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