Plant rainwater recovery device

Abstract

The utility model belongs to a plant rainwater recovery device in the technical field of rainwater recovery treatment systems. The rainwater settling pond (1) is connected with a water inlet pipeline (2) and a water outlet pipeline (3), the water inlet pipeline (2) is provided with a U-shaped part (4), a filter grid (5) is arranged at the joint of the water inlet pipeline (2) and the rainwater settling pond (1), a slope part (13) is arranged at the lower part of the filter grid (5), and the slope part (13) is communicated with a large-particle impurity collecting box body (12) positioned outside the rainwater settling pond (1). The plant rainwater recovery device can conveniently and reliably realize precipitation of rainwater, reliably clean large-particle impurities and sludge, improve the precipitation quality of the rainwater and meet the treatment requirements.

Description

Technical Field

[0001] This utility model belongs to the technical field of rainwater harvesting and treatment systems, and more specifically, it relates to a rainwater harvesting device for factory areas. Background Technology

[0002] Traditional rainwater harvesting systems use sedimentation tanks for simple sedimentation and discharge, which cannot effectively remove pollutants such as sludge and large particles, posing a risk of water source pollution. Rainwater that has undergone sedimentation in these tanks and is then supplied to wastewater treatment systems results in excessive impurities in those systems.

[0003] Among the existing technologies is a technology entitled "Plant Area Rainwater Recycling Device" with publication (announcement) number "CN1821496B". This technology discloses a factory rainwater recycling device, which is composed of: production wastewater and rainwater collection pipes (1) connected to a regulating water tank (7) and a rainwater drainage pipe (3) respectively through an intercepting well (2); the rainwater drainage pipe (3) is connected to a sedimentation tank (4), and a rainwater return pump (5) is located in the sedimentation tank (4). One end of the rainwater return pipe (6) is connected to the rainwater return pump (5), and the other end is connected to the regulating water tank (7); a booster pump (8) is located in the regulating water tank (7), and the booster pump (8) is connected to wastewater treatment equipment (9); a reclaimed water pump (11) is located in the reclaimed water tank (10), and the reclaimed water pump (11) is connected to the reclaimed water pipe (12). This invention is particularly suitable for areas with scarce water resources and high environmental protection requirements, as well as arid areas with low land use requirements. However, this technology does not address the technical issues and solutions of this application. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a rainwater recycling device for factories that is simple in structure, can conveniently and reliably achieve rainwater sedimentation, can reliably clean large particulate impurities and sludge, improve the quality of rainwater sedimentation, and meet the treatment requirements, in order to address the shortcomings of the existing technology.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] This utility model is a rainwater recycling device for a factory area. The rainwater sedimentation tank is connected to an inlet pipe and an outlet pipe. The inlet pipe is equipped with a U-shaped section. A filter screen is installed at the junction of the inlet pipe and the rainwater sedimentation tank. A slope is provided at the bottom of the filter screen. The slope is connected to a large particle impurity collection box located outside the rainwater sedimentation tank.

[0007] The first drain plug is screwed onto the bottom of the large particle impurity collection box.

[0008] The bottom of the rainwater sedimentation tank is designed with a conical structure, a screw conveyor is installed at the bottom of the rainwater sedimentation tank, and a sludge outlet is provided at the bottom of the rainwater sedimentation tank.

[0009] A first valve is installed at the sludge outlet at the bottom of the rainwater sedimentation tank.

[0010] The inlet pipe connects to the upper part of one side of the rainwater sedimentation tank, and the outlet pipe connects to the upper part of the other side of the rainwater sedimentation tank. The height of the part of the inlet pipe that connects to the rainwater sedimentation tank is higher than the height of the part of the outlet pipe that connects to the rainwater sedimentation tank.

[0011] A water level sensor is installed on the inner wall of the rainwater sedimentation tank near the upper part. A water level sensor is installed on the inner wall of the rainwater sedimentation tank 1 near the lower part.

[0012] A second valve is installed on the inlet pipe. A third valve is installed on the outlet pipe.

[0013] The outlet pipe of the rainwater sedimentation tank is connected to the sewage treatment tank.

[0014] The water inlet pipe is connected to a rainwater collection tank, and a water pump is installed on the water inlet pipe.

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

[0016] The rainwater harvesting device for factory areas described in this utility model includes a rainwater sedimentation tank for settling rainwater. The rainwater sedimentation tank is connected to an inlet pipe and an outlet pipe. The inlet pipe is used to transport rainwater collected in the rainwater collection tank to the rainwater sedimentation tank. The inlet pipe has a U-shaped section, which reduces the water flow rate. A filter screen is installed at the junction of the inlet pipe and the rainwater sedimentation tank. The lower part of the filter screen is connected to a large particle impurity collection box located outside the rainwater sedimentation tank. The filter screen can effectively intercept large particles with a diameter larger than the filter screen aperture. Moreover, due to gravity, the large particles will move downwards along the filter screen and enter the large particle impurity collection box. If some large particles cannot fall into the large particle collection box by gravity, a slope is provided at the bottom of the filter screen to hold a certain number of these large particles. The filter screen is recessed into the rainwater sedimentation tank, with its edges connected to the inner wall of the tank. This reliably prevents large particles from crossing the filter screen and entering the sedimentation tank. The slope also helps to hold the large particles, preventing them from accumulating and clogging the filter screen. The slope is inclined towards the large particle collection box. When the water inlet pipe stops flowing, the large particles accumulated on the slope will slide down into the large particle collection box by gravity. A first drain plug is screwed onto the bottom of the large particle collection box for periodic unscrewing and cleaning of the collected large particles, ensuring easy cleaning. Attached Figure Description

[0017] The following is a brief explanation of the contents depicted in the accompanying drawings and the markings therein:

[0018] Figure 1 This is a schematic diagram of the structure of the rainwater harvesting device for factory areas described in this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the rainwater harvesting device for factory areas described in this utility model;

[0020] The labels in the attached diagram are as follows: 1. Rainwater sedimentation tank; 2. Inlet pipe; 3. Outlet pipe; 4. U-shaped section; 5. Filter screen; 6. First sewage plug; 7. Screw conveyor; 8. Sludge discharge pipe; 9. First valve; 10. Water level sensor; 11. Second valve; 12. Large particle impurity collection box; 13. Sloping section; 14. Third valve; 15. Motor. Detailed Implementation

[0021] The following description, with reference to the accompanying drawings, provides a more detailed explanation of the specific embodiments of this utility model, including the shape and structure of each component, the relative positions and connections between the parts, the functions and working principles of each part:

[0022] As attached Figure 1 Appendix Figure 2As shown, this utility model is a rainwater harvesting device for a factory area. A rainwater sedimentation tank 1 is connected to an inlet pipe 2 and an outlet pipe 3. The inlet pipe 2 has a U-shaped section 4. A filter screen 5 is installed at the junction of the inlet pipe 2 and the rainwater sedimentation tank 1. A slope section 13 is provided at the lower part of the filter screen 5, and the slope section 13 connects to a large particle impurity collection box 12 located outside the rainwater sedimentation tank 1. This structure addresses the shortcomings of existing technologies by proposing an improved technical solution. In the structural design, a rainwater sedimentation tank is set up to settle rainwater. The rainwater sedimentation tank 1 is connected to the inlet pipe 2 and the outlet pipe 3. The inlet pipe is used to transport the rainwater collected in the rainwater collection tank to the rainwater sedimentation tank. The inlet pipe 2 is equipped with a U-shaped section 4. The structure of the U-shaped section 4 can reduce the water flow rate. A filter grid 5 is set at the junction of the inlet pipe 2 and the rainwater sedimentation tank 1. The lower part of the filter grid 5 is connected to the large particle impurity collection box 12 located outside the rainwater sedimentation tank 1. The filter grid 5 can effectively intercept large particle impurities with a diameter larger than the pore size of the filter grid 5. Moreover, due to gravity, the large particle impurities will move downward along the filter grid 5 and enter the large particle impurity collection box 12. If some large particles cannot fall into the large particle collection box 12 automatically due to gravity, a slope 13 is provided at the bottom of the filter screen 5 to hold a certain number of large particles. The filter screen 5 is recessed into the rainwater sedimentation tank 1, and its edges are connected to the inner wall of the rainwater sedimentation tank 1, reliably preventing large particles from crossing the filter screen 5 and entering the rainwater sedimentation tank 1. At the same time, the slope 13 holds large particles, preventing them from accumulating and clogging the filter screen 5. The slope 13 is inclined towards the large particle collection box 12. When the water inlet pipe 1 stops flowing, the large particles accumulated on the slope 13 will slide down into the large particle collection box 12 due to gravity. A first drain plug 6 is screwed onto the bottom of the large particle collection box 12. This is used to periodically unscrew and clean the collected large particles, ensuring easy cleaning.

[0023] The rainwater sedimentation tank 1 has a conical bottom structure, with a screw conveyor 7 and a sludge outlet 8 at its bottom. This conical bottom design facilitates the settling of sludge towards the screw conveyor. The sludge inlet at one end of the screw conveyor's outer casing aligns with the sludge outlet at the bottom of the sedimentation tank 1. The screw conveyor extends entirely outside the sedimentation tank, and a motor is fixedly mounted on the end of the outer casing. The motor's drive shaft is fixedly connected to the screw structure. The motor is periodically started to transport the settled sludge from the bottom of the sedimentation tank to the outside for collection. Sludge is also collected from the other end of the screw conveyor's outer casing and the sludge outlet.

[0024] A first valve 9 is installed at the bottom of the rainwater sedimentation tank 1. With this structure, the first valve can be closed when sludge cleaning is not required, preventing water from seeping from the rainwater sedimentation tank 1 to the outside.

[0025] The inlet pipe 2 connects to one side of the rainwater sedimentation tank 1 near the upper part, and the outlet pipe 3 connects to the other side of the rainwater sedimentation tank 1 near the upper part. The height of the section where the inlet pipe 2 connects to the rainwater sedimentation tank 1 is higher than the height of the section where the outlet pipe 3 connects to the rainwater sedimentation tank 1. In this structure, the height of the inlet of the inlet pipe 2 is higher than the height of the outlet pipe, ensuring reliable water output. Even if the inlet pipe stops receiving water, the rainwater sedimentation tank still has an output flow, which can meet the water discharge requirements.

[0026] A water level sensor 10 is installed near the upper part of the inner wall of the rainwater sedimentation tank 1, and another water level sensor 10 is installed near the lower part of the inner wall of the rainwater sedimentation tank 1. In this structure, the water level sensor 10 senses the water volume in the rainwater sedimentation tank. When the water volume is lower than that of the water level sensor at the lower part, water is added; when the water volume is higher than that of the water level sensor at the lower part, water intake is stopped.

[0027] A second valve 11 is installed on the water inlet pipe 2. A third valve 14 is installed on the water outlet pipe 3. With this structure, the valve on the water inlet pipe can be closed as needed to prevent water from entering. The valve on the water outlet pipe 3 can be closed as needed to stop water flow.

[0028] The outlet pipe 3 of the rainwater sedimentation tank 1 is connected to the sewage treatment tank. In this structure, the rainwater that has settled in the sedimentation tank is pumped to the sewage treatment tank for treatment.

[0029] The inlet pipe 2 is connected to the rainwater collection tank, and a water pump is installed on the inlet pipe 2. In this structure, the water pump on the inlet pipe is used to pump water, so that the rainwater enters the rainwater sedimentation tank.

[0030] The rainwater harvesting device for the factory area described in this utility model includes a rainwater sedimentation tank for settling rainwater. The rainwater sedimentation tank 1 is connected to an inlet pipe 2 and an outlet pipe 3. The inlet pipe is used to transport rainwater collected in the rainwater collection tank to the rainwater sedimentation tank. The inlet pipe 2 is provided with a U-shaped section 4. The structure of the U-shaped section 4 can reduce the water flow rate. A filter grid 5 is provided at the junction of the inlet pipe 2 and the rainwater sedimentation tank 1. The lower part of the filter grid 5 is connected to a large particle impurity collection box 12 located outside the rainwater sedimentation tank 1. The filter grid 5 can effectively intercept large particle impurities with a diameter larger than the aperture of the filter grid 5. Due to gravity, the large particle impurities will move downward along the filter grid 5 and enter the large particle impurity collection box 12. If some large particles cannot fall into the large particle collection box 12 automatically due to gravity, the filter screen 5 has a sloping section 13 at its lower part to bear a certain number of large particles. The filter screen 5 is recessed into the rainwater sedimentation tank 1, and its edges are connected to the inner wall of the rainwater sedimentation tank 1, reliably preventing large particles from crossing the filter screen 5 and entering the rainwater sedimentation tank 1. At the same time, the sloping section 13 bears large particles, preventing them from accumulating and clogging the filter screen 5. The sloping section 13 is inclined towards the large particle collection box 12. When the water inlet pipe 1 stops flowing, the large particles accumulated on the sloping section 13 will slide into the large particle collection box 12 due to gravity. The bottom of the large particle collection box 12 is screwed with a first drain plug 6 for periodically unscrewing and cleaning the collected large particles, making cleaning convenient. The rainwater recovery device for the factory area described in this utility model has a simple structure, can conveniently and reliably achieve rainwater sedimentation, and can reliably clean large particles and sludge, improving the quality of rainwater sedimentation and meeting treatment requirements.

[0031] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A plant rainwater recovery apparatus, characterized by: The rainwater sedimentation tank (1) is connected to the inlet pipe (2) and the outlet pipe (3). The inlet pipe (2) is equipped with a U-shaped section (4). A filter screen (5) is installed at the junction of the inlet pipe (2) and the rainwater sedimentation tank (1). A slope section (13) is installed at the bottom of the filter screen (5). The slope section (13) is connected to the large particle impurity collection box (12) located outside the rainwater sedimentation tank (1).

2. The plant rainwater recovery apparatus of claim 1, wherein: The bottom of the large particle impurity collection box (12) is screwed with a first drain plug (6).

3. The plant rainwater recovery apparatus according to claim 1 or 2, characterized in that: The bottom of the rainwater sedimentation tank (1) is set in a conical structure, and a sludge outlet (8) is set at the bottom of the rainwater sedimentation tank (1). A screw conveyor (7) is set at the bottom of the rainwater sedimentation tank (1).

4. The plant rainwater recovery apparatus of claim 3, wherein: A first valve (9) is installed at the sludge outlet (8) at the bottom of the rainwater sedimentation tank (1).

5. The plant rainwater recovery apparatus according to claim 1 or 2, characterized by: The inlet pipe (2) is connected to the upper part of the rainwater sedimentation tank (1) on one side, and the outlet pipe (3) is connected to the upper part of the rainwater sedimentation tank (1) on the other side. The height of the part where the inlet pipe (2) is connected to the rainwater sedimentation tank (1) is higher than the height of the part where the outlet pipe (3) is connected to the rainwater sedimentation tank (1).

6. The plant rainwater recovery apparatus according to claim 1 or 2, characterized by: A water level sensor (10) is installed on the inner wall of the rainwater sedimentation tank (1) near the upper part and on the inner wall of the rainwater sedimentation tank (1) near the lower part.

7. The plant rainwater recovery apparatus according to claim 1 or 2, characterized by: A second valve (11) is installed on the water inlet pipe (2), and a third valve (14) is installed on the water outlet pipe (3).

8. The plant rainwater recovery apparatus according to claim 1 or 2, characterized by: The outlet pipe (3) of the rainwater sedimentation tank (1) is connected to the sewage treatment tank.

9. The plant rainwater recovery apparatus of claim 1 or 2, wherein: The water inlet pipe (2) is connected to the rainwater collection tank, and a water pump is installed on the water inlet pipe (2).

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