Wastewater treatment system of container spraying device

Abstract

The wastewater treatment system of the container spraying device comprises a reaction tank, a clean water tank, a filtered water collecting tank and a conveying mechanism, a water receiving hopper is arranged above the front end of the filtered water collecting tank, and the rear end of the filtered water collecting tank is communicated with the clean water tank; a submersible pump is arranged in the reaction tank and is used for upwards pumping wastewater deposited at the bottom of the reaction tank into the water receiving hopper; the conveying mechanism is located above the filtered water collecting tank, one end of the conveying mechanism is arranged below the water receiving hopper, the conveying mechanism comprises a filter screen crawler belt and a driving unit used for driving the filter screen crawler belt to move in the extending direction of the filtered water collecting tank, and the filter screen crawler belt is used for filtering waste water flowing out from the lower portion of the water receiving hopper; the filter screen crawler belt is further provided with an extrusion mechanism used for extruding waste residues on the filter screen crawler belt. According to the utility model, the continuous separation of waste residues and water in the wastewater can be realized, the wastewater treatment efficiency is improved, the manual operation is reduced, and the labor cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of container processing technology, specifically to a wastewater treatment system for a container painting device. Background Technology

[0002] Due to the large size of shipping containers, a large amount of paint mist is generated during the painting process. Inside the spray booth, the paint mist is dissolved in water through water curtains and spraying to form wastewater. This large amount of wastewater generated during the painting process needs to be treated by a wastewater treatment system to separate the wastewater into solid paint residue and clean water that can be reused in the water curtain and spraying systems inside the spray booth. Existing wastewater treatment systems for container painting equipment typically include a reaction tank and a clear water tank. During operation, the wastewater generated in the spray booth is diverted to the reaction tank, where a treatment liquid is added. After a full reaction, the paint residue settles at the bottom of the reaction tank. The clear water at the top of the reaction tank is drained, and the paint residue is then removed and dehydrated by squeezing or other methods. Although this wastewater treatment system can separate wastewater into paint residue and recyclable clean water, its treatment efficiency is slow and the labor costs are high. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to propose a wastewater treatment system for a container painting device, which can improve the efficiency of wastewater treatment and has a low labor cost.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] The wastewater treatment system for the container painting unit includes a reaction tank, a clear water tank, a filter water collection tank, and a conveying mechanism;

[0006] A water receiving hopper is installed at the front end of the water collection tank, and the rear end is connected to the clear water tank;

[0007] A submersible pump is installed in the reaction tank to pump the wastewater deposited at the bottom of the reaction tank upwards into the receiving hopper;

[0008] The conveying mechanism is located above the water collection tank, and one end of the conveying mechanism is placed below the water receiving hopper. The conveying mechanism includes a filter screen track and a drive unit for driving the filter screen track to move along the extension direction of the water collection tank. The filter screen track is used to filter the wastewater flowing out from below the water receiving hopper. The filter screen track is also equipped with a squeezing mechanism for squeezing the waste residue on the filter screen track.

[0009] The drive unit includes a drive roller, a driven roller, and a motor for driving the drive roller to rotate. The filter screen track is synchronously wound around the outside of the drive roller and the driven roller. The extrusion mechanism includes two extrusion rollers that are positioned opposite each other, one above and one below the upper part of the filter screen track.

[0010] The reaction tank and the clear water tank are arranged in a front-to-back direction. The filter water collection tank is located on one side of the reaction tank and the clear water tank. The rear end of the filter water collection tank is connected to the clear water tank through a connecting hole, and a waste residue filter screen is installed in the connecting hole.

[0011] It includes two reaction tanks, which are arranged in a front-to-back direction with the clear water tank.

[0012] The filter track includes a first section extending horizontally from front to back, and a second section extending obliquely upward from the rear end of the first section. A waste hopper is provided below the rear end of the second section of the filter track.

[0013] It includes a stirrer built into the reaction tank, an additive for adding treatment liquid into the reaction tank, and a control unit. The control unit is used to control the start and stop of the stirrer and the additive according to a set unit time.

[0014] The reaction tank is equipped with external pipelines for conveying wastewater into the tank, and gate valves are installed on the pipelines.

[0015] The beneficial effects of this utility model are as follows:

[0016] In this invention, a filter conveyor belt is used to separate suspended solids from wastewater. The separated water flows into a clear water tank through a filter collection tank and is collected. The solids on the filter conveyor belt are further dehydrated by a squeezing mechanism, which further removes water and reduces the space occupied by the treated solids. The water collected in the clear water tank can be reused, reducing water waste. In addition, since this invention uses a filter conveyor belt to transport solids and a filter collection tank to collect the filtered water, it can achieve continuous separation of solids and water in wastewater, improve wastewater treatment efficiency, and reduce manual operation and labor costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 For Figure 1 AA section view;

[0019] Figure 3 for Figure 1 BB section view;

[0020] Figure 4 for Figure 1 CC section view;

[0021] Figure 5 for Figure 1 DD sectional view. Detailed Implementation

[0022] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0023] like Figure 1 , 2 As shown in Figures 3, 4, and 5, this utility model discloses a wastewater treatment system for a container painting apparatus. The system includes a reaction tank 10, a clear water tank 20, a filter collection tank 30, and a conveying mechanism. The reaction tank 10 and the clear water tank 20 are arranged sequentially in a front-to-back direction. The filter collection tank 30 is located on one side of the reaction tank 10 and the clear water tank 20 and extends in a front-to-back direction. A water receiving hopper 61 is installed above the front end of the filter collection tank 30, and the rear end of the filter collection tank 30 is connected to the clear water tank 20. A submersible pump 15 is installed inside the reaction tank 10. The submersible pump 15 is used to pump the wastewater deposited at the bottom of the reaction tank upwards into the water receiving hopper 61. Wastewater generated in the container painting booth is sent to the reaction tank 10. A treatment liquid is added inside the reaction tank 10. The wastewater inside the reaction tank 10... The reaction with the treatment liquid produces wastewater containing suspended solids. This wastewater is pumped to the receiving hopper 61 via a submersible pump 16. A conveying mechanism is located above the filter collection tank 30, with one end positioned below the receiving hopper 61. This mechanism includes a filter conveyor belt 40 and a drive unit for moving the filter conveyor belt 40 along the extension direction of the filter collection tank 30. The filter conveyor belt 40 receives the wastewater containing suspended solids falling from the receiving hopper 61. The wastewater is filtered through the filter conveyor belt 40, isolating the solids on it and conveying them to the rear end for collection. Water falling from the filter conveyor belt 40 enters the filter collection tank 30 and flows into the clear water tank 20. A squeezing mechanism is also provided on the filter conveyor belt 40 to squeeze the wastewater conveyed by the filter conveyor belt 40, further dewatering the wastewater.

[0024] In operation, this invention transports wastewater generated from dissolving paint mist in the container spray booth to the reaction tank 10. A treatment solution is added to the reaction tank 10, and after the treatment solution reacts fully with the wastewater, the wastewater containing suspended waste residue is transported to the receiving hopper 61. Through the buffering effect of the receiving hopper 61, the wastewater containing suspended waste residue slowly falls onto the filter conveyor belt 40. The filter conveyor belt 40 filters most of the water from the waste residue, causing it to fall into the filter collection tank 30. While the filter conveyor belt 40 is transporting the waste residue, a squeezing mechanism further dehydrates the waste residue, ultimately transporting it to the end of the filter conveyor belt 40 for centralized storage. The water separated from the waste residue flows into the clear water tank 20 through the filter collection tank 30 for collection. The water in the clear water tank 20 can be supplied to the water-using equipment inside the spray booth to achieve water reuse.

[0025] In this invention, a filter conveyor belt 40 is used to separate suspended waste residue from wastewater. The separated water flows into a clear water tank 20 via a filter water collection tank 30 and is collected. The waste residue on the filter conveyor belt 40 is further dehydrated by a squeezing mechanism, which further removes water and reduces the space occupied by the treated waste residue. The water collected inside the clear water tank 20 can be reused, reducing water waste. In addition, since this invention uses a filter conveyor belt 40 to transport waste residue and a filter water collection tank 30 to collect the filtered water, it can achieve continuous separation of waste residue and water in wastewater, improve wastewater treatment efficiency, and reduce manual operation and labor costs.

[0026] The drive unit includes a drive roller 51, a driven roller 52, and a motor. The motor drives the drive roller 51 to rotate. The filter screen track 40 is synchronously wound around the outside of the drive roller 51 and the driven roller 52, forming a ring structure. The portion above the drive roller 51 and the driven roller 52 is used to support the waste residue. The extrusion mechanism includes an extrusion roller 71 and an extrusion roller 72 that are positioned vertically opposite each other. The extrusion roller 71 is located above the upper part of the filter screen track, and the extrusion roller 72 is located below the upper part of the filter screen track 40. The extrusion rollers 71 and 72 can be used to extrude and dewater the waste residue passing between them. In other embodiments, the extrusion mechanism can also be in other structural forms, such as an extrusion block that can move vertically above the filter screen track.

[0027] The reaction tank 10 and the clear water tank 20 are arranged in a front-to-back direction. A filter collection tank 30 is located on one side of the reaction tank 10 and the clear water tank 20. The rear end of the filter collection tank 30 is connected to the clear water tank 20 through a connecting hole 21, allowing water in the filter collection tank 30 to flow into the clear water tank 20 through the connecting hole 21. The filter collection tank 30 can be configured with a front-high, rear-low structure, allowing water to flow from front to back. A waste residue filter screen 22 is installed inside the connecting hole 21 to prevent waste residue on the filter screen conveyor 40 from falling into the clear water tank 20 through the filter collection tank 30. Alternatively, this invention can have two reaction tanks 10 arranged in a front-to-back direction with the clear water tank 20. The two reaction tanks 10 can treat wastewater simultaneously, increasing wastewater treatment efficiency and allowing waste residue in the wastewater to be separated from the water as much as possible.

[0028] To facilitate the recycling of waste residue, the filter track 40 of this utility model includes a first section 41 extending horizontally from front to back and a second section 42 extending obliquely upward from the rear end of the first section 41. A waste residue receiving hopper 62 is provided below the rear end of the second section 42 of the filter track 40. By setting the second section 42 at the rear of the filter track 40 to a structure that gradually slopes upward from front to back, the height between the rear of the filter track 40 and the ground is raised. In this way, a sufficiently large waste residue receiving hopper 62 can be placed below the rear of the filter track 40 to store more waste residue and reduce the number of times waste residue is transferred.

[0029] This invention also includes a stirrer 11 located inside the reaction tank 10, an additive 12 for adding treatment liquid into the reaction tank, and a control unit. The stirrer 11 continuously stirs the wastewater during the reaction between the treatment liquid and the wastewater inside the reaction tank 10 to ensure a more complete reaction. The additive 12 automatically adds treatment liquid into the reaction tank 10. The control unit controls the additive 12 and the stirrer 11. For example, it can calculate the reaction time and the time required to add a quantitative amount of treatment liquid based on the internal volume of the wastewater tank 10, and define the required time as a unit time. The control unit controls the stirrer 11 and the additive 12 accordingly based on this unit time, so that the stirrer 11 and the additive 12 can be automatically turned on and off, thereby improving the automation level of the wastewater treatment system, reducing manual operation, and thus reducing labor costs.

[0030] The aforementioned reaction tank 10 is externally equipped with a pipeline 13 for conveying wastewater into the reaction tank 10. The pipeline 13 is connected to the wastewater output interface of the paint booth, so that the wastewater generated by the paint booth is directly sent into the reaction tank 10. A gate valve 14 is installed on the pipeline 13, which can control the opening and closing of the pipeline 13. When the liquid level inside the reaction tank 10 reaches a preset height, the gate valve 14 can be closed. The gate valve 14 can also be controlled by the aforementioned control unit. For example, when the liquid level inside the reaction tank 10 reaches a preset height, the control unit controls the gate valve 14 to close, and at the same time starts the additive 12 to add treatment liquid into the reaction tank 10. After the treatment liquid is added for a preset time, the additive 12 is controlled to stop working, and then the stirrer 11 is controlled to start.

[0031] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A wastewater treatment system for a container painting unit, characterized in that, Includes a reaction tank, a clear water tank, a filtered water collection tank, and a conveying mechanism; A water receiving hopper is installed at the front end of the water collection tank, and the rear end is connected to the clear water tank; A submersible pump is installed in the reaction tank to pump the wastewater deposited at the bottom of the reaction tank upwards into the water receiving hopper; The conveying mechanism is located above the water collection tank, and one end of the conveying mechanism is placed below the water receiving hopper. The conveying mechanism includes a filter screen track and a drive unit for driving the filter screen track to move along the extension direction of the water collection tank. The filter screen track is used to filter the wastewater flowing out from below the water receiving hopper. The filter screen track is also equipped with a squeezing mechanism for squeezing the waste residue on the filter screen track.

2. The wastewater treatment system of the container painting apparatus as described in claim 1, characterized in that, The drive unit includes a drive roller, a driven roller, and a motor for driving the drive roller to rotate. The filter screen track is synchronously wound around the outside of the drive roller and the driven roller. The extrusion mechanism includes two extrusion rollers that are positioned opposite each other, one above and one below the upper part of the filter screen track.

3. The wastewater treatment system of the container painting apparatus as described in claim 1, characterized in that, The reaction tank and the clear water tank are arranged in a front-to-back direction. The filter water collection tank is located on one side of the reaction tank and the clear water tank. The rear end of the filter water collection tank is connected to the clear water tank through a connecting hole, and a waste residue filter screen is installed in the connecting hole.

4. The wastewater treatment system of the container painting apparatus as described in claim 3, characterized in that, It includes two reaction tanks, which are arranged in a front-to-back direction with the clear water tank.

5. The wastewater treatment system of the container painting apparatus as described in claim 3, characterized in that, The filter track includes a first section extending horizontally from front to back and a second section extending obliquely upward from the rear end of the first section. A waste hopper is provided below the rear end of the second section of the filter track.

6. The wastewater treatment system of the container painting apparatus as described in claim 1, characterized in that, It includes a stirrer built into the reaction tank, an additive for adding treatment liquid into the reaction tank, and a control unit. The control unit is used to control the start and stop of the stirrer and the additive according to a set unit time.

7. The wastewater treatment system of the container painting apparatus as described in claim 1, characterized in that, The reaction tank is equipped with external pipelines for conveying wastewater into the tank, and gate valves are installed on the pipelines.

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