Hydropower station construction camp domestic wastewater treatment device

Abstract

The utility model discloses a domestic wastewater treatment device for a construction camp of a hydropower station, which belongs to the technical field of hydropower station construction and comprises a construction camp site which is symmetrically provided with a first wastewater treatment tank and a second wastewater treatment tank. The anti-blocking assembly comprises a first filter screen, a second filter screen, a middle fork ejector rod, four edge fork ejector rods which are distributed on the peripheral side of the middle fork ejector rod in a rectangular shape and are positioned above the first filter screen, and a spiral vortex guide piece which is arranged between the first filter screen and the second filter screen; middle intercepting iron wires are connected between the four edge fork ejector rods and the middle fork ejector rod, edge intercepting iron wires are connected between every two adjacent edge fork ejector rods, and the top ends of the middle fork ejector rod and the edge fork ejector rods are of sharp tip structures. According to the utility model, large-particle solid impurities and floating objects can be effectively captured, forked and intercepted, and are prevented from falling on the first filter screen and the second filter screen to cause blockage.

Description

Technical Field

[0001] This utility model belongs to the field of hydropower station construction technology, and in particular to a device for treating domestic wastewater at a hydropower station construction camp. Background Technology

[0002] A hydroelectric power station is a comprehensive engineering facility that converts water energy into electrical energy. It generally includes a reservoir formed by water-retaining and spillway structures, a water intake system, a power plant, and electromechanical equipment. High-level water from the reservoir flows into the power plant through the water intake system, driving turbine generators to generate electricity, which is then transmitted to the power grid via step-up transformers, switchyards, and transmission lines. In the current context, the domestic wastewater from hydroelectric power station construction camps is not only large in volume but also complex in composition, containing significant amounts of solid impurities, floating matter, and chemical pollutants, posing higher demands on wastewater treatment.

[0003] Traditional wastewater treatment devices typically rely on simple bar screens or single filters for initial filtration. These designs fail to adequately consider the complexity of construction site wastewater, which contains a large amount of solid impurities, floating matter, and large particulate pollutants such as plastic bags. They lack design structures to intercept these impurities. If this problem is not solved, solid impurities will directly enter the bar screen or single filter, causing frequent clogging and reducing overall treatment efficiency.

[0004] A search revealed a Chinese patent publication number: CN216711766U, which describes a multi-stage environmentally friendly domestic wastewater treatment device for municipal engineering. The device includes a treatment tank with a funnel at the center of its top surface. A filter plate is horizontally fixed inside the treatment tank, and a filter cloth is provided on the top surface of the filter plate. Vertical axial displacement pressure rods are provided at the four corners of the filter cloth. A side groove is provided on one side of the treatment tank, and a sealing plate is hinged to one side of the side groove. A pull block is provided on one side of the outer surface of the sealing plate. A multi-stage filtration assembly is located at the center of the inside of the treatment tank, and a dosing and stirring mechanism is located at the bottom of the inside of the treatment tank.

[0005] The patent documents cited above also have the same problem: they lack a design structure to intercept these impurities. If this problem is not solved, solid impurities will directly enter the grid or single filter, causing the grid or single filter to be frequently clogged and reducing the overall processing efficiency. Utility Model Content

[0006] The purpose of this utility model is to provide a wastewater treatment device for hydropower station construction camps to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a domestic wastewater treatment device for a hydropower station construction camp, comprising a construction camp site, on which a first wastewater treatment tank and a second wastewater treatment tank are symmetrically arranged. An inlet pipe is connected through the top surface of the first wastewater treatment tank, and a drain pipe is connected through the periphery of the bottom end of the second wastewater treatment tank. A U-shaped conveying pipe is inserted between the top ends of the first and second wastewater treatment tanks, so that the water filtered in the first wastewater treatment tank is conveyed to the second wastewater treatment tank for further treatment. A filter anti-clogging pipe is connected to the end of the inlet pipe near the first wastewater treatment tank, and an anti-clogging component is provided in the filter anti-clogging pipe.

[0008] The anti-clogging component includes a first filter screen and a second filter screen symmetrically fixed in the filter anti-clogging pipe, a central fork rod positioned above the middle of the first filter screen, four edge fork rods arranged in a rectangular pattern around the central fork rod and above the first filter screen, and a spiral vortex guide between the first and second filter screens. Each of the four edge fork rods is connected to the central fork rod with a central intercepting wire, and each adjacent edge fork rod is connected to an edge intercepting wire. The tips of the central fork rod and the edge fork rods are all sharp-pointed structures.

[0009] In a preferred embodiment, the top surface of the first filter screen is provided with four support plates welded in a rectangular pattern. A cross bracket is welded to the top of each of the four support plates. The middle fork rod is vertically welded to the middle position of the cross bracket, and the four edge fork rods are respectively welded to the top surfaces of the four free ends of the cross bracket.

[0010] In a preferred embodiment, the bottom end of the spiral vortex guide is rotatably mounted with a rotating shaft, and propeller blades are fixed around the circumference of the rotating shaft. The bottom end of the rotating shaft is rotatably mounted at the center of the top surface of the second filter screen.

[0011] In this preferred embodiment, both ends of the rotating shaft are rotatably connected to the opposite ends of the second filter screen and the spiral vortex guide via sealed bearings.

[0012] In this preferred embodiment, both the upper and lower ends of the filter anti-clogging pipe are integrally connected with flanges. The flange at the bottom end is bolted to the top surface of the first wastewater treatment tank, and the flange at the top end is bolted to one end of the inlet pipe.

[0013] In this preferred embodiment, a support collar is fixed at one end of the water inlet pipe near the filter anti-clogging pipe, and two lifting brackets are welded to the outer wall of one end of the support collar.

[0014] In a preferred embodiment, both the top of the first wastewater treatment tank and the second wastewater treatment tank are fixed with inverted U-shaped supports, and the ends of the two hoisting supports away from the support collar are welded to the U-shaped supports of the first wastewater treatment tank.

[0015] In a preferred embodiment, the top surfaces of the U-shaped supports of the first and second wastewater treatment tanks are each fixed with a stirring motor, and the output shafts of the two stirring motors extend into the first and second wastewater treatment tanks respectively and are connected to a stirrer.

[0016] In this preferred embodiment, an F-type sludge discharge pipe is connected between the bottom ends of the first wastewater treatment tank and the second wastewater treatment tank. A sludge pool is located on one side of the construction camp site. The F-type sludge discharge pipe uses an external negative pressure sludge pump to pump the sludge from the bottom of the first wastewater treatment tank and the second wastewater treatment tank into the sludge pool.

[0017] In a preferred embodiment of this scheme, the pore size of the first filter screen is larger than that of the second filter screen.

[0018] Compared with the prior art, the technical effects and advantages of this utility model are as follows:

[0019] The wastewater treatment device at the hydropower station construction camp uses an inlet pipe to filter and prevent clogging of the wastewater. This device includes a first filter screen, a second filter screen, a central forked rod, an edge forked rod, a central intercepting wire, an edge intercepting wire, and a spiral vortex guide. These components work together to perform preliminary physical filtration of the incoming wastewater. This design effectively captures and intercepts large solid impurities and floating objects, preventing them from falling onto the first and second filter screens and causing blockages, thus ensuring a smoother and more efficient subsequent treatment process.

[0020] After initial filtration by the first filter screen, the water flows in a vortex shape towards the second filter screen under the action of the spiral vortex guide, further improving the water flow speed and filtration efficiency. Compared with the traditional straight flow path, the vortex flow can not only speed up the water flow, but also make the water more evenly distributed on the filter screen, improve the filtration quality, and reduce the risk of clogging. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A;

[0024] Figure 3 This is a schematic diagram of the installation structure of the anti-clogging component and the filter anti-clogging pipe of this utility model;

[0025] Figure 4 This is a schematic diagram of the disassembly structure of the anti-blocking component of this utility model;

[0026] Figure 5 This is a schematic diagram of the connection structure between the first and second filter screens of this utility model.

[0027] Figure 6 This is a schematic diagram of the installation structure of the propeller blade of this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] In the diagram: 1. Construction camp site; 2. First wastewater treatment tank; 3. Second wastewater treatment tank; 4. Drainage pipe; 5. Inlet pipe; 6. Conveying pipe; 7. Mixing motor; 8. F-type sludge discharge pipe; 9. Sludge pool; 10. U-shaped support; 11. Filter anti-clogging pipe; 12. Lifting support; 13. Flange; 14. Anti-clogging component; 15. Cross support; 16. Support plate; 17. First filter screen; 18. Second filter screen; 19. Spiral vortex guide; 20. Propeller blade; 21. Intermediate fork rod; 22. Edge fork rod; 23. Intermediate intercepting wire; 24. Edge intercepting wire; 25. Sealed bearing; 26. Shaft. Detailed Implementation

[0030] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0031] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0032] This embodiment provides, for example Figures 1 to 6The illustrated device for treating domestic wastewater from a hydropower station construction camp includes a construction camp site 1. A first wastewater treatment tank 2 and a second wastewater treatment tank 3 are symmetrically arranged on the construction camp site 1. An inlet pipe 5 is connected through the top surface of the first wastewater treatment tank 2, and a drain pipe 4 is connected through the periphery of the bottom end of the second wastewater treatment tank 3. A U-shaped conveying pipe 6 is inserted between the top ends of the first wastewater treatment tank 2 and the second wastewater treatment tank 3, allowing the filtered water in the first wastewater treatment tank 2 to be transported to the second wastewater treatment tank 3 for further treatment. A filter anti-clogging pipe 11 is connected to the end of the inlet pipe 5 closest to the first wastewater treatment tank 2. An anti-clogging component 14 is installed in the filter anti-clogging pipe 11 to prevent clogging. The blockage assembly 14 includes a first filter screen 17 and a second filter screen 18 symmetrically fixed in the filter anti-blockage pipe 11, a central fork rod 21 positioned above the first filter screen 17, four edge fork rods 22 arranged in a rectangular pattern around the central fork rod 21 and above the first filter screen 17, and a spiral vortex guide 19 positioned between the first filter screen 17 and the second filter screen 18. Each of the four edge fork rods 22 is connected to the central fork rod 21 by a central intercepting wire 23, and each of two adjacent edge fork rods 22 is connected to an edge intercepting wire 24. The tops of the central fork rod 21 and the edge fork rods 22 are all sharp-pointed structures. The design of the middle fork top rod 21 and the edge fork top rod 22 can trap solid impurities, floating impurities, as well as household plastic bags and leaves. The middle intercepting wire 23 and the edge intercepting wire 24 can further expand the range of interception of solid impurities in domestic wastewater, reducing the amount of solid impurities falling onto the first filter screen 17 and the second filter screen 18 and causing blockage. At the same time, the design of the spiral vortex guide 19 can make the water filtered from the first filter screen 17 vortexed and transported towards the second filter screen 18 under the action of the spiral vortex guide 19, thereby accelerating the filtration of water.

[0033] In this embodiment, the top surface of the first filter screen 17 is welded with four support plates 16 in a rectangular distribution. The top of the four support plates 16 is welded with a cross bracket 15. The middle fork rod 21 is vertically welded to the middle position of the cross bracket 15, and the four edge fork rods 22 are respectively welded to the top surface of the four free ends of the cross bracket 15.

[0034] In this embodiment, a rotating shaft 26 is rotatably mounted on the bottom end of the spiral vortex guide 19, and a propeller blade 20 is fixed on the periphery of the rotating shaft 26. The bottom end of the rotating shaft 26 is rotatably mounted at the center of the top surface of the second filter screen 18.

[0035] In this embodiment, both ends of the rotating shaft 26 are rotatably connected to the opposite ends of the second filter screen 18 and the spiral vortex guide 19 via sealed bearings 25. With the design of the sealed bearings 25, when water flows and impacts the propeller blade 20, the entire propeller blade 20 rotates, thereby knocking some impurities not filtered by the first filter screen 17 to the top edge of the second filter screen 18, preventing blockage of the middle position of the second filter screen 18. This allows the water flowing down the vortex from the spiral vortex guide 19 to be further filtered by the second filter screen 18.

[0036] In this embodiment, flanges 13 are integrally connected to both the upper and lower ends of the filter anti-clogging pipe 11. The flange 13 at the bottom end is installed on the top surface of the first wastewater treatment tank 2 by bolts, and the flange 13 at the top end is fixedly connected to one end of the water inlet pipe 5 by bolts.

[0037] In this embodiment, a support collar is fixed at one end of the water inlet pipe 5 near the filter anti-clogging pipe 11, and two hoisting brackets 12 are welded to the outer wall of one end of the support collar.

[0038] In this embodiment, the top of both the first wastewater treatment tank 2 and the second wastewater treatment tank 3 is fixed with an inverted U-shaped bracket 10, and the ends of the two hoisting brackets 12 away from the support collar are welded together with the U-shaped bracket 10 of the first wastewater treatment tank 2.

[0039] In this embodiment, the top surface of the U-shaped support 10 of the first wastewater treatment tank 2 and the second wastewater treatment tank 3 is fixed with a stirring motor 7. The output shafts of the two stirring motors 7 extend into the first wastewater treatment tank 2 and the second wastewater treatment tank 3 respectively and are connected to the stirrer.

[0040] In this embodiment, an F-type sludge discharge pipe 8 is connected between the bottom ends of the first wastewater treatment tank 2 and the second wastewater treatment tank 3. A sludge pool 9 is located on one side of the construction camp site 1. The F-type sludge discharge pipe 8 uses an external negative pressure sludge pump to pump the sludge from the bottom of the first wastewater treatment tank 2 and the second wastewater treatment tank 3 into the sludge pool 9.

[0041] In this embodiment, the pore size of the first filter screen 17 is larger than that of the second filter screen 18. Domestic wastewater enters the filter anti-clogging pipe 11 from the inlet pipe 5, is filtered by the anti-clogging component 14, and then flows into the first wastewater treatment tank 2. The wastewater in the first wastewater treatment tank 2 is stirred by the stirring motor 7 and the agitator to carry out sedimentation filtration by adding the required chemicals to the first wastewater treatment tank 2. Subsequently, the filtered water in the first wastewater treatment tank 2 is transported to the second wastewater treatment tank 3 for further filtration by the action of the water pump and the delivery pipe 6. The required chemicals are then added to the second wastewater treatment tank 3, and the water in the second wastewater treatment tank 3 is filtered by the stirring motor 7 and the agitator. Finally, the filtered water is discharged from the drain pipe 4, and the negative pressure sludge pump is turned on to pump out the sludge settled at the bottom of the inner cavity of the first wastewater treatment tank 2 and the second wastewater treatment tank 3 through the F-type sludge discharge pipe 8 and discharge it into the sludge pool 9.

[0042] Working principle

[0043] The domestic wastewater treatment device at the hydropower station construction camp allows domestic wastewater to enter the filter and anti-clogging pipe 11 through the inlet pipe 5. An anti-clogging component 14 is installed inside the pipe. When the wastewater first enters the filter and anti-clogging pipe 11, large solid impurities and floating objects such as plastic bags and leaves are captured and caught by the sharp, pointed middle fork rod 21 and edge fork rod 22. The middle intercepting wire 23 is connected between the middle fork rod 21 and the edge fork rod 22, while the edge intercepting wire 24 is located between two adjacent edge fork rods 22. Together, they further expand the range of solid impurity interception, reducing the possibility of these impurities clogging the first filter screen 17 and the second filter screen 18.

[0044] After initial filtration, the wastewater undergoes primary filtration through the first filter screen 17. Subsequently, under the action of the spiral vortex guide 19, the water flow forms a vortex and flows towards the second filter screen 18. This design not only accelerates the filtration speed but also improves filtration efficiency. The filtered wastewater flows into the first wastewater treatment tank 2. During this process, appropriate chemicals are added according to actual site requirements. The stirring motor 7 drives the agitator to thoroughly mix the wastewater, promoting sedimentation and chemical reactions to achieve the purpose of preliminary purification.

[0045] The pre-treated water is pumped from the first wastewater treatment tank 2 to the second wastewater treatment tank 3 via a water pump and a U-shaped conveying pipe 6. Here, chemicals are added again as needed, and the water is further treated by a stirring motor 7 and a stirrer to ensure that the water quality meets the standards.

[0046] After secondary treatment, the water is discharged through the drain pipe 4, which realizes the effective treatment of domestic wastewater from the hydropower station construction camp. The sludge accumulated at the bottom of the first wastewater treatment tank 2 and the second wastewater treatment tank 3 is pumped out through the F-type sludge discharge pipe 8 by the external negative pressure sludge pump and discharged to the sludge pool 9 for centralized treatment.

[0047] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0048] 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 wastewater treatment device for a hydropower station construction camp, comprising a construction camp site (1), characterized in that: The construction camp site (1) is symmetrically provided with a first wastewater treatment tank (2) and a second wastewater treatment tank (3). The top surface of the first wastewater treatment tank (2) is connected to an inlet pipe (5), and the bottom periphery of the second wastewater treatment tank (3) is connected to a drain pipe (4). A U-shaped conveying pipe (6) is inserted between the top of the first wastewater treatment tank (2) and the second wastewater treatment tank (3) so that the water filtered in the first wastewater treatment tank (2) is transported to the second wastewater treatment tank (3) for further treatment. The end of the inlet pipe (5) near the first wastewater treatment tank (2) is connected to a filter anti-clogging pipe (11), and an anti-clogging component (14) is provided in the filter anti-clogging pipe (11). The anti-clogging component (14) includes a first filter screen (17) and a second filter screen (18) symmetrically fixed in the filter anti-clogging pipe (11), a middle fork rod (21) located at the middle position above the first filter screen (17), four edge fork rods (22) arranged in a rectangular distribution around the middle fork rod (21) and located above the first filter screen (17), and a spiral vortex guide (19) arranged between the first filter screen (17) and the second filter screen (18). The four edge fork rods (22) are connected to the middle fork rod (21) by a middle intercepting wire (23), and the two adjacent edge fork rods (22) are connected by an edge intercepting wire (24). The tops of the middle fork rod (21) and the edge fork rods (22) are all sharp pointed structures.

2. The wastewater treatment device for a hydropower station construction camp according to claim 1, characterized in that: The top surface of the first filter screen (17) is welded with four support plates (16) in a rectangular distribution. The top of the four support plates (16) is welded with a cross bracket (15). The middle fork rod (21) is vertically welded to the middle position of the cross bracket (15). The four edge fork rods (22) are respectively welded to the top surface of the four free ends of the cross bracket (15).

3. The wastewater treatment device for a hydropower station construction camp according to claim 2, characterized in that: The bottom end of the spiral vortex guide (19) is rotatably mounted with a rotating shaft (26), and a propeller blade (20) is fixed on the periphery of the rotating shaft (26). The bottom end of the rotating shaft (26) is rotatably mounted at the center of the top surface of the second filter screen (18).

4. The wastewater treatment device for a hydropower station construction camp according to claim 3, characterized in that: Both ends of the rotating shaft (26) are rotatably connected to the opposite ends of the second filter screen (18) and the spiral vortex guide (19) respectively through sealed bearings (25).

5. The wastewater treatment device for a hydropower station construction camp according to claim 4, characterized in that: The filter anti-clogging pipe (11) is integrally connected to both the upper and lower ends with flanges (13). The flange (13) at the bottom end is installed on the top surface of the first wastewater treatment tank (2) by bolts, and the flange (13) at the top end is fixedly connected to one end of the water inlet pipe (5) by bolts.

6. The wastewater treatment device for a hydropower station construction camp according to claim 5, characterized in that: The water inlet pipe (5) is fixed with a support collar at one end near the filter anti-clogging pipe (11), and two hoisting brackets (12) are welded to the outer wall of one end of the support collar.

7. A wastewater treatment device for a hydropower station construction camp according to claim 6, characterized in that: The top of the first wastewater treatment tank (2) and the second wastewater treatment tank (3) are both fixed with an inverted U-shaped bracket (10), and the ends of the two hoisting brackets (12) away from the support collar are welded together with the U-shaped bracket (10) of the first wastewater treatment tank (2).

8. A wastewater treatment device for a hydropower station construction camp according to claim 7, characterized in that: The top surface of the U-shaped bracket (10) of the first wastewater treatment tank (2) and the second wastewater treatment tank (3) is fixed with a stirring motor (7). The output shafts of the two stirring motors (7) extend into the first wastewater treatment tank (2) and the second wastewater treatment tank (3) respectively and are connected to a stirrer.

9. A wastewater treatment device for a hydropower station construction camp according to claim 8, characterized in that: An F-type sludge discharge pipe (8) is connected between the bottom ends of the first wastewater treatment tank (2) and the second wastewater treatment tank (3). A sludge pool (9) is located on one side of the construction camp site (1). The F-type sludge discharge pipe (8) uses an external negative pressure sludge pump to pump the sludge from the bottom of the first wastewater treatment tank (2) and the second wastewater treatment tank (3) into the sludge pool (9).

10. A wastewater treatment device for a hydropower station construction camp according to claim 9, characterized in that: The pore size of the first filter screen (17) is larger than that of the second filter screen (18).

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