Recycling device for waste water of withdrawal and straightening machine in galvanized wire

Abstract

The utility model discloses a recovery device for waste water of a withdrawal and straightening machine in a galvanized wire. The recovery device comprises a recovery water tank connected with a waste water reservoir of the withdrawal and straightening machine, the recycling water tank is connected with the cleaning area flushing tank through a recycling pipeline; wherein one end of the recycling pipeline is connected with the recycling water tank, and the other end of the recycling pipeline is further provided with a waste water discharging branch and a cleaning area flushing tank recycling branch; the wastewater discharge branch is connected to the wastewater pit, and the cleaning area flushing tank recovery branch is connected to the cleaning area flushing tank; according to the utility model, the waste water of the withdrawal and straightening machine is recycled to the washing tank of the washing area in the galvanized wire for washing, so that the waste of pure water resources is reduced, and the waste water treatment capacity is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of steel strip galvanized wire manufacturing, specifically relating to a wastewater recovery device for a straightening machine in galvanized wire production. Background Technology

[0002] In steel strip galvanizing lines, the mechanical components of the straightening machine generate a large amount of heat due to friction during operation. According to the production process requirements of the galvanizing line, pure water flows through the key components of the straightening machine via a circulation system, forming a thin water film on the contact surface between the rollers and the steel strip. This reduces friction between the two and also helps improve the straightening accuracy. However, this process also generates a large amount of wastewater from the straightening machine.

[0003] In current technology, wastewater from the leveling machine is directly discharged from the leveling machine's storage tank into a wastewater pit. This means that the invested resources are wasted, increasing production and wastewater treatment costs, and is inconsistent with the concept of sustainable development. Since leveling machine wastewater is essentially used pure water, to reduce the waste of pure water resources and lower the wastewater treatment volume, there is an urgent need to design a wastewater recycling device to achieve the recycling and reuse of leveling machine wastewater. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a wastewater recovery device for a straightening machine in a galvanizing line, which recovers the wastewater from the straightening machine to the rinsing tank in the cleaning area of ​​the galvanizing line for rinsing and reuse, thereby reducing the waste of pure water resources and reducing the amount of wastewater to be treated.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A device for recycling wastewater from a straightening machine in a galvanizing line includes a recycling tank connected to a wastewater storage tank of the straightening machine; the recycling tank is connected to a rinsing tank in a cleaning area via a recycling pipeline; wherein one end of the recycling pipeline is connected to the recycling tank, and the other end is respectively provided with a wastewater discharge branch and a rinsing tank recycling branch in the cleaning area; the wastewater discharge branch is connected to a wastewater pit, and the rinsing tank recycling branch is connected to the rinsing tank in the cleaning area.

[0007] Preferably, a first switching valve is provided on the recovery branch of the rinsing tank in the cleaning area; by selectively opening and closing the first switching valve, the water flow is selectively directed into the wastewater pit and the rinsing tank in the cleaning area.

[0008] Preferably, the wastewater pit is equipped with a water quality monitoring device; wherein, the first switch valve is closed to control the water flow into the wastewater pit, and when the water quality monitoring device detects that the wastewater quality is qualified, the first switch valve is opened to control the water flow into the rinsing tank of the cleaning area.

[0009] Preferably, an outlet water meter is also provided on the recovery branch of the rinsing tank in the cleaning area. The outlet water meter is located between the first switch valve and the rinsing tank in the cleaning area and is used to count the wastewater outlet flow rate.

[0010] Preferably, a self-circulation device for realizing the self-recycling of water flow is provided between the outlet and the inlet of the rinsing tank in the cleaning area; wherein, the self-circulation device includes a heating module for heating the recycled water flow and / or a filtration module for filtering the recycled water flow; the recycling branch of the rinsing tank in the cleaning area is connected to the self-circulation device.

[0011] Preferably, a wastewater drainage pipeline is provided between the recycling water tank and the wastewater storage tank of the straightening machine; wherein, an inlet water meter is provided on the wastewater drainage pipeline for counting the amount of wastewater recycled at the inlet.

[0012] Preferably, a first water pump is provided on the recycling pipeline, and a second switch valve is provided between the first water pump and the recycling water tank.

[0013] Preferably, the recycled water tank is equipped with a level gauge that is communicatively connected to the first water pump, and the first water pump determines whether to start or stop operation based on the liquid level in the recycled water tank.

[0014] Preferably, the recovery pipeline is further provided with a second water pump connected in parallel with the first water pump, and a third switching valve is provided between the second water pump and the recovery water tank; wherein, the first water pump and the second water pump are respectively connected to a first switching valve and a second switching valve, and the second water pump serves as a standby water pump.

[0015] Preferably, both the first and second switching valves are ball valves; the second water pump is the same as the first water pump; and both the third switching valve and the second switching valve are butterfly valves.

[0016] This application proposes a recycling water tank connected to the wastewater storage tank of the straightening machine. The recycling water tank is connected to the rinsing tank of the cleaning area via a recycling pipeline. One end of the recycling pipeline is connected to the recycling water tank, and the other end is simultaneously connected to a wastewater discharge branch leading to the wastewater pit and a rinsing tank recycling branch leading to the rinsing tank of the cleaning area. In practical application, recycling can be selected according to the water quality of the wastewater. At the same time, this application recycles the wastewater from the straightening machine to the rinsing tank of the cleaning area in the galvanizing line for rinsing and reuse, reducing the waste of pure water resources and reducing the amount of wastewater to be treated. Moreover, since the rinsing tank of the cleaning area is usually equipped with a self-circulation device, the recycling efficiency of the wastewater from the straightening machine is further improved. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the connection structure of the wastewater recovery device for the straightening machine in a galvanizing line under a specific embodiment of this utility model (the arrows in the diagram represent the direction of water flow).

[0018] Figure 2 This is a schematic diagram of the connection structure of the wastewater storage tank end of the pull-down straightening machine according to a specific embodiment of this utility model (the arrows in the diagram represent the direction of water flow).

[0019] Figure 3 This is a schematic diagram of the connection structure of the rinsing tank end in the cleaning area according to a specific embodiment of this utility model. Detailed Implementation

[0020] This utility model discloses a device for recycling wastewater from a straightening machine in a galvanizing line, including a recycling water tank connected to a wastewater storage tank of the straightening machine; the recycling water tank is connected to a rinsing tank in the cleaning area via a recycling pipeline; wherein, one end of the recycling pipeline is connected to the recycling water tank, and the other end is respectively provided with a wastewater discharge branch and a rinsing tank recycling branch in the cleaning area; the wastewater discharge branch is connected to a wastewater pit, and the rinsing tank recycling branch in the cleaning area is connected to the rinsing tank in the cleaning area.

[0021] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. 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 should fall within the protection scope of this utility model.

[0022] Please see Figure 1 and combined Figure 2 and Figure 3 As shown, a wastewater recovery device for a straightening machine in a galvanizing line includes a recovery water tank 2 connected to a wastewater storage tank 1 of the straightening machine; the recovery water tank 2 is connected to a rinsing tank in the cleaning area via a recovery pipeline 3; wherein, one end of the recovery pipeline 3 is connected to the recovery water tank 2, and the other end is respectively provided with a wastewater discharge branch 31 and a rinsing tank recovery branch 32 in the cleaning area; the wastewater discharge branch 31 is connected to a wastewater pit 4, and the rinsing tank recovery branch 32 in the cleaning area is connected to the rinsing tank in the cleaning area 5;

[0023] Preferably, in this embodiment, a wastewater drainage pipe 6 is provided between the recovery water tank 2 and the wastewater storage tank 1 of the straightening machine; wherein, an inlet water meter 7 is provided on the wastewater drainage pipe 6 to count the amount of wastewater recovered at the inlet; specifically preferably, in this embodiment, a wastewater drainage pipe 6 with a size specification of DN50 is used, and the length, width and height dimensions of the recovery water tank 2 are specifically set to 1000mm*1000mm*1000mm;

[0024] Preferably, in this embodiment, a first water pump 8a is provided on the recovery pipeline 3, and a second switch valve 9a is provided between the first water pump 8a and the recovery water tank 2; more preferably, in this embodiment, a level gauge (a known structure, not shown in the figure) is provided in the recovery water tank 2 and is communicatively connected to the first water pump 8a, and the first water pump 8a determines whether to start or stop operation according to the liquid level in the recovery water tank 2.

[0025] Preferably, in this embodiment, the recovery pipeline 3 is further provided with a second water pump 8b connected in parallel with the first water pump 8a, and a third switch valve 9b is provided between the second water pump 8b and the recovery water tank 2; wherein, the first water pump 8a and the second water pump 8b are respectively connected to the first switching valve 10a and the second switching valve 10b, and the second water pump 8b serves as a backup water pump, that is, a water pump structure scheme of one backup and one use is set up, which further facilitates the long-term continuous operation effect of this application during implementation;

[0026] Preferably, in this embodiment, both the first switching valve 10a and the second switching valve 10b are ball valves; the second water pump 8b is the same as the first water pump 8a; and both the third switching valve 9b and the second switching valve 9a are butterfly valves. More preferably, in this embodiment, when the first water pump 8a is working normally, the liquid level of the recovery water tank 2 is normally maintained at about 4 / 5; when the liquid level of the recovery water tank 2 drops by about half, the first water pump 8a stops working, and the second switching valve 9a works in coordination with the first water pump 8a; the second water pump 8b serves as a backup structure for the first water pump 8a, and its working state is the same as that of the first water pump 8a. The switching between the first water pump 8a and the second water pump 8b is achieved through the first switching valve 10a and the second switching valve 10b. Specifically, when the first water pump 8a is working, the first switching valve 10a is open and the second switching valve 10b is closed; when the second water pump is working, the first switching valve 10a is closed and the second switching valve 10b is open.

[0027] Preferably, in this embodiment, a first switching valve 11 (specifically a ball valve in this embodiment) is provided on the recovery branch 32 of the rinsing tank in the cleaning area; by selectively opening and closing the first switching valve 11, the water flow is selectively controlled to enter the wastewater pit 4 and the rinsing tank 5 in the cleaning area; more preferably, in this embodiment, the wastewater pit 4 is provided with a water quality monitoring device (a known water quality testing device can be used, which is not an innovation of this application and will not be specifically elaborated in this embodiment); wherein, when the first switching valve 11 is closed, the water flow is controlled to enter the wastewater pit 4, and when the water quality monitoring device detects that the wastewater quality is qualified, the first switching valve 11 is opened to control the water flow to enter the rinsing tank 5 in the cleaning area.

[0028] Preferably, in this embodiment, an outlet water meter 12 is also provided on the recovery branch 32 of the rinsing tank in the cleaning area. The outlet water meter 12 is located between the first switch valve 11 and the rinsing tank 5 in the cleaning area and is used to count the wastewater outlet flow rate.

[0029] Preferably, a self-circulation device (not shown in the figure, but a known self-circulation device can be used, which is a conventional technical means in this field and its solution itself is not an innovation of this application, and will not be elaborated in this embodiment) is provided between the outlet and the inlet of the rinsing tank 5 in the cleaning area; wherein, the self-circulation device includes a heating module (known structure) for heating the recycled water flow and / or a filtration module (known structure) for filtering the recycled water flow; the recycling branch 32 of the rinsing tank in the cleaning area is connected to the self-circulation device; in order to improve the rinsing water quality of the rinsing tank 5 in the cleaning area, in this embodiment, the water flow can be treated by the self-circulation device of the rinsing tank 5 in the cleaning area before being used for rinsing in the cleaning area.

[0030] This embodiment proposes a recycling water tank 2 connected to the wastewater storage tank 1 of the straightening machine. The recycling water tank 2 is connected to the rinsing tank 5 of the cleaning area via a recycling pipeline 3. One end of the recycling pipeline 3 is connected to the recycling water tank 2, and the other end is simultaneously provided with a wastewater discharge branch 31 connected to the wastewater pit 4 and a rinsing tank recycling branch 32 connected to the rinsing tank 5 of the cleaning area. In actual implementation, recycling can be selected according to the water quality of the wastewater. At the same time, this application recycles the wastewater from the straightening machine to the rinsing tank 5 of the galvanizing line for rinsing and utilization, reducing the waste of pure water resources and reducing the amount of wastewater to be treated. Moreover, since the rinsing tank 5 of the cleaning area is usually equipped with a self-circulation device, the recycling efficiency of the wastewater from the straightening machine is further improved.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for recycling wastewater from a straightening machine in a galvanizing line, characterized in that, It includes a recycling water tank connected to the wastewater storage tank of the leveling machine; the recycling water tank is connected to the rinsing tank of the cleaning area through a recycling pipeline; wherein, one end of the recycling pipeline is connected to the recycling water tank, and the other end is respectively provided with a wastewater discharge branch and a rinsing tank recycling branch of the cleaning area; the wastewater discharge branch is connected to the wastewater pit, and the rinsing tank recycling branch of the cleaning area is connected to the rinsing tank of the cleaning area.

2. The wastewater recovery device for the straightening machine in the galvanizing line according to claim 1, characterized in that, A first switch valve is provided on the recovery branch of the rinsing tank in the cleaning area; by selectively opening and closing the first switch valve, the water flow is selectively directed into the wastewater pit and the rinsing tank in the cleaning area.

3. The wastewater recovery device for the straightening machine in the galvanizing line according to claim 2, characterized in that, The wastewater pit is equipped with a water quality monitoring device; wherein, the first switch valve is closed to control the water flow into the wastewater pit, and when the water quality monitoring device detects that the wastewater quality is qualified, the first switch valve is opened to control the water flow into the rinsing tank of the cleaning area.

4. The wastewater recovery device for the straightening machine in the galvanizing line according to claim 2, characterized in that, An outlet water meter is also installed on the recovery branch of the rinsing tank in the cleaning area. The outlet water meter is located between the first switch valve and the rinsing tank in the cleaning area and is used to count the wastewater outlet flow rate.

5. The wastewater recovery device for the straightening machine in a galvanizing line according to claim 1 or 2, characterized in that, A self-circulation device for realizing the self-recycling of water flow is provided between the outlet and the inlet of the rinsing tank in the cleaning area; wherein, the self-circulation device includes a heating module for heating the recycled water flow and / or a filtration module for filtering the recycled water flow; the recycling branch of the rinsing tank in the cleaning area is connected to the self-circulation device.

6. The wastewater recovery device for the straightening machine in the galvanizing line according to claim 1, characterized in that, A wastewater drainage pipeline is provided between the recycling water tank and the wastewater storage tank of the straightening machine; wherein, an inlet water meter is provided on the wastewater drainage pipeline to count the amount of wastewater recycled at the inlet.

7. The wastewater recovery device for the straightening machine in a galvanizing line according to claim 1 or 2, characterized in that, The recycling pipeline is equipped with a first water pump, and a second switch valve is provided between the first water pump and the recycling water tank.

8. The wastewater recovery device for the straightening machine in the galvanizing line according to claim 7, characterized in that, The recycled water tank is equipped with a level gauge that is communicatively connected to the first water pump. The first water pump determines whether to start or stop operation based on the liquid level in the recycled water tank.

9. The wastewater recovery device for the straightening machine in the galvanizing line according to claim 7, characterized in that, The recycling pipeline is also equipped with a second water pump connected in parallel with the first water pump, and a third switching valve is provided between the second water pump and the recycling water tank; wherein, the first water pump and the second water pump are respectively connected to a first switching valve and a second switching valve, and the second water pump serves as a standby water pump.

10. The wastewater recovery device for the straightening machine in a galvanizing line according to claim 9, characterized in that, Both the first and second switching valves are ball valves; the second water pump is the same as the first water pump; and both the third switching valve and the second switching valve are butterfly valves.

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