Sewage filtering device for power plant

Abstract

The utility model relates to the technical field of sewage treatment, and discloses a sewage filtering device for a power plant, which comprises a filtering box, a water inlet pipe is arranged at the upper end of the filtering box, the lower end of the water inlet pipe extends into the filtering box and is provided with a filtering inner container, and the lower end of the filtering inner container is provided with a filtering layer. Sewage entering the filtering inner container through the water inlet pipe is filtered by the filtering layer and then enters the filtering box; a water outlet pipe is mounted at the side part of the filter box, and the water outlet pipe is communicated with the bottom of the inner cavity of the filter box. Sewage is introduced into the filtering inner container through the water inlet pipe, solid particle impurities in the sewage are filtered through the filtering layer at the lower end of the filtering inner container, the filtered water enters the inner cavity of the filtering box and then is discharged outwards through the water outlet pipe, sewage filtering treatment is achieved, the overall structure is simple, operation is convenient and fast, and practicability is high. The purchase, use and maintenance cost can be reduced, the occupied area is small, and the plant space utilization rate can be increased.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically a wastewater filtration device for power plants. Background Technology

[0002] Gas-fired power generation is a type of gas-fired power generation. It generates steam by burning coal gas to heat water, converting the chemical energy of the coal gas into thermal energy. The steam pressure drives the turbine to rotate, converting the thermal energy into mechanical energy. Then, the turbine drives the generator to rotate, converting the mechanical energy into electrical energy. In this process, many steps will generate wastewater, which needs to be filtered and purified in multiple stages before it can be discharged or recycled.

[0003] Currently, most power plants use large-scale equipment to filter wastewater. This equipment is bulky, resulting in a large footprint and reduced plant space utilization. Moreover, the procurement, use, and maintenance costs of large-scale equipment are high. Therefore, there is an urgent need to design a small and easy-to-use wastewater filtration device. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model proposes a wastewater filtration device for power plants.

[0005] The present invention discloses a wastewater filtration device for power plants, comprising a filter box, an inlet pipe installed at the upper end of the filter box, and a filter inner liner installed at the lower end of the inlet pipe. The lower end of the filter inner liner has a filter layer. Wastewater entering the filter inner liner through the inlet pipe is filtered by the filter layer and then enters the filter box.

[0006] A water outlet pipe is installed on the side of the filter box, and the water outlet pipe is connected to the bottom of the inner cavity of the filter box.

[0007] As a further optimization of this utility model, a water guide platform is installed at the bottom of the inner cavity of the filter box. The water guide platform is frustum-shaped, with the lower base area of ​​the frustum being larger than the upper base area, and the lower end of the inclined surface of the frustum being flush with the lower base surface of the water outlet pipe.

[0008] As a further optimization of this utility model, the water guide platform is a hollow truncated cone, the lower end of the filter inner tank is tightly fitted inside the water guide platform, the lower end of the filter inner tank extends downward to the bottom of the water guide platform and is equipped with a pad, the pad is detachably connected to the bottom of the filter box and the connection is sealed.

[0009] As a further optimization of this utility model, the filter layer is circumferentially disposed on the lower outer wall of the filter inner liner, and the bottom edge of the filter layer is not lower than the upper surface of the water guide platform.

[0010] As a further optimization of this utility model, a threaded sleeve and a threaded tube are installed on the upper end face of the pad. The threaded sleeve is sleeved around the threaded tube. The lower end of the filter inner liner is threadedly fitted onto the outside of the threaded tube and is in close contact with the inner wall of the threaded sleeve. The outer wall of the threaded sleeve is threadedly connected to the mounting hole at the bottom of the filter box.

[0011] As a further optimization of this utility model, the upper opening of the filter inner liner has an internal thread, the lower end of the water inlet pipe has an external thread, and the upper end of the filter inner liner is threadedly engaged with the lower end of the water inlet pipe.

[0012] As a further optimization of this utility model, a filter plate is installed in the inner cavity of the filter box, which is positioned above the filter layer. The filter plate divides the inner cavity of the filter box into an upper filter chamber and a lower filter chamber. The water outlet pipe is connected to the lower filter chamber. A drain pipe is also installed on the side of the filter box, and the drain pipe is connected to the upper filter chamber.

[0013] As a further optimization of this utility model, the filter plate is annular and a filter membrane is inlaid on the annular surface. The outer wall of the filter plate is connected to the inner wall of the filter box. A sealing ring adapted to the filter inner liner is fixedly fitted at the center of the filter plate. The outer wall of the filter inner liner and the inner wall of the sealing ring are tightly fitted together.

[0014] As a further optimization of this utility model, the pore size of the filter membrane is smaller than that of the filter layer.

[0015] The wastewater filtration device for power plants proposed in this utility model has the following beneficial effects:

[0016] (i) Wastewater is introduced into the filter inner tank through the inlet pipe. The filter layer at the bottom of the filter inner tank is used to filter solid particulate impurities in the wastewater. The filtered water enters the inner cavity of the filter box and is discharged out through the outlet pipe, thus achieving wastewater filtration treatment. The overall structure is simple and easy to operate, which can reduce procurement, use and maintenance costs. Moreover, it occupies a small area, which is conducive to improving the utilization rate of factory space.

[0017] (ii) The pad plate is detachably connected to the bottom of the filter box via a threaded sleeve, so that the filter inner liner can be installed from the bottom of the filter box into the filter box, which facilitates actual disassembly, replacement and maintenance. The threaded tube design on the upper surface of the pad plate not only facilitates the threaded disassembly and assembly of the filter inner liner, but also allows the filter waste to be collected through the threaded tube, so as to clean the waste regularly and improve the convenience of actual use.

[0018] (III) By installing filter plates in the inner cavity of the filter box, and utilizing the design that the pore size of the filter membrane on the filter plate is smaller than that of the filter layer, layered filtration is achieved, improving the filtration effect of the upper layer of water in the inner cavity of the filter box, and performing graded filtration treatment of sewage, thereby facilitating the graded utilization of sewage, which is conducive to improving the sewage recycling rate, reducing production costs, and benefiting the enterprise's production efficiency.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the internal structure of the filter box of this utility model;

[0021] Figure 2 This is a schematic diagram of the bottom cross-sectional structure of the filter box of this utility model;

[0022] Figure 3 This is a top view of the filter plate of this utility model.

[0023] Figure descriptions: 1. Filter box; 2. Filter inner tank; 3. Inlet pipe; 4. Outlet pipe; 5. Water guide platform; 6. Filter layer; 7. Gasket; 8. Threaded sleeve; 9. Filter plate; 10. Drain pipe; 11. Threaded pipe; 12. First sealing ring; 13. Second sealing ring; 14. Sealing ring; 15. Filter membrane. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] Please see Figure 1 A wastewater filtration device for power plants includes a filter box 1. An inlet pipe 3 is installed at the upper end of the filter box 1. The lower end of the inlet pipe 3 extends into the filter box 1 and is fitted with a filter inner liner 2. The lower end of the filter inner liner 2 has a filter layer 6. Wastewater entering the filter inner liner 2 through the inlet pipe 3 is filtered by the filter layer 6 and then enters the filter box 1.

[0030] A water outlet pipe 4 is installed on the side of the filter box 1, and the water outlet pipe 4 is connected to the bottom of the inner cavity of the filter box 1.

[0031] A water guide platform 5 is installed at the bottom of the inner cavity of the filter box 1. The water guide platform 5 is in the shape of a frustum, with the lower base area of ​​the frustum being larger than the upper base area. The lower end of the inclined surface of the frustum is flush with the lower base surface of the outlet pipe 4, so that the sewage at the bottom of the inner cavity of the filter box 1 can be discharged out through the outlet pipe 4, and at the same time, it can also prevent water accumulation during maintenance.

[0032] The water guide platform 5 is a hollow truncated cone. The lower end of the filter inner liner 2 is tightly fitted inside the water guide platform 5. The lower end of the filter inner liner 2 extends downward to the bottom of the water guide platform 5 and is equipped with a pad 7. The pad 7 is detachably connected to the bottom of the filter box 1 and the connection is sealed. The vertical disassembly and assembly of the pad 7 facilitates the vertical disassembly and assembly of the filter inner liner 2 inside the filter box 1, so as to replace and maintain the filter inner liner 2.

[0033] The filter layer 6 is circumferentially arranged on the lower outer wall of the filter inner tank 2, and the bottom edge of the filter layer 6 is not lower than the upper surface of the water guide platform 5, so that the sewage in the filter inner tank 2 can smoothly enter the outlet pipe 4 through the inclined surface of the water guide platform 5 for discharge.

[0034] like Figure 2 As shown, a threaded sleeve 8 and a threaded tube 11 are installed on the upper end face of the pad 7. The threaded sleeve 8 is sleeved around the threaded tube 11. The lower end of the filter inner liner 2 is threadedly fitted onto the outside of the threaded tube 11 and is tightly attached to the inner wall of the threaded sleeve 8. The outer wall of the threaded sleeve 8 is threadedly connected to the mounting hole at the bottom of the filter box 1, which facilitates the sealing connection between the threaded sleeve 8 and the mounting hole at the bottom of the filter box 1 and quick assembly, thereby facilitating the disassembly and assembly of the filter inner liner 2.

[0035] Specifically, a first sealing ring 12 is provided on the upper end face of the threaded sleeve 8. When the threaded sleeve 8 is threadedly assembled with the mounting hole, the first sealing ring 12 is squeezed between the threaded sleeve 8 and the lower end face of the water guide platform 5, thereby forming a seal and preventing sewage in the filter box 1 from leaking downwards.

[0036] Furthermore, the device also includes two first sealing rings 12. The first first sealing ring 12 is fitted on the lower outer wall of the threaded tube 11, and the upper and lower end faces of the first first sealing ring 12 are respectively in contact with the lower end face of the filter inner liner 2 and the upper end face of the pad 7. The outer wall of the first first sealing ring 12 is in contact with the inner wall of the threaded sleeve 8. The second first sealing ring 12 is fitted on the water inlet pipe 3, and the upper and lower end faces of the second first sealing ring 12 are respectively in contact with the top wall of the inner cavity of the filter box 1 and the upper end face of the filter inner liner 2. This design can improve the sealing performance of the upper and lower ends of the filter box 1.

[0037] Furthermore, the upper opening of the filter inner liner 2 has an internal thread, and the lower end of the water inlet pipe 3 has an external thread. The upper end of the filter inner liner 2 and the lower end of the water inlet pipe 3 are threadedly engaged, which facilitates disassembly and assembly while improving the connection sealing.

[0038] Specifically, a filter plate 9 is installed in the inner cavity of the filter box 1 above the filter layer 6. The filter plate 9 divides the inner cavity of the filter box 1 into an upper filter chamber and a lower filter chamber. The water outlet pipe 4 is connected to the lower filter chamber. A drain pipe 10 is also installed on the side of the filter box 1 and is connected to the upper filter chamber. The filter plate 9 is annular and a filter membrane 15 is inlaid on the annular surface. The outer wall of the filter plate 9 is connected to the inner wall of the filter box 1. A sealing ring 14 that matches the filter inner liner 2 is fixedly fitted at the center of the filter plate 9. The outer wall of the filter inner liner 2 is tightly fitted to the inner wall of the sealing ring 14. The filter pore size of the filter membrane 15 is smaller than that of the filter layer 6, which can realize graded filtration so as to facilitate the graded utilization of sewage.

[0039] The number of filter plates 9 can be multiple and distributed in parallel vertically to further achieve multi-stage filtration;

[0040] The filter plate 9 can be installed using snap-fit ​​fastening or other methods, and can be easily disassembled.

[0041] In summary, the wastewater filtration device for power plants proposed in this utility model allows wastewater to be introduced into the filter inner tank 2 through the inlet pipe 3. The filter layer 6 at the lower end of the filter inner tank 2 filters solid particulate impurities from the wastewater. The filtered water then enters the inner cavity of the filter box 1 and is discharged outwards through the outlet pipe 4, thus achieving wastewater filtration. The overall structure is simple, easy to operate, and reduces procurement, usage, and maintenance costs. Furthermore, it occupies a small area, which is beneficial for improving the utilization rate of plant space. The pad 7 is detachably connected to the bottom of the filter box 1 through a threaded sleeve 8, allowing the filter inner tank 2 to be installed from the bottom of the filter box 1 into the filter box 1, facilitating... In actual disassembly, replacement, and maintenance, the design of the threaded tube 11 on the upper end face of the pad 7 facilitates the disassembly and assembly of the inner filter liner 2, and also allows for the collection of filter waste through the threaded tube 11 for regular cleaning, improving the convenience of actual use. By installing the filter plate 9 in the inner cavity of the filter box 1, and utilizing the design that the filtration pore size of the filter membrane 15 on the filter plate 9 is smaller than that of the filter layer 6, layered filtration is achieved, improving the filtration effect of the upper layer of water in the inner cavity of the filter box 1, and performing graded filtration treatment of sewage. This facilitates the graded utilization of sewage, which is conducive to improving the sewage recycling rate, reducing production costs, and benefiting enterprise production efficiency.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A wastewater filtration device for power plants, comprising a filter box (1), characterized in that: The upper end of the filter box (1) is equipped with a water inlet pipe (3), and the lower end of the water inlet pipe (3) extends into the filter box (1) and is equipped with a filter inner liner (2). The lower end of the filter inner liner (2) has a filter layer (6). Wastewater entering the filter inner liner (2) through the water inlet pipe (3) is filtered by the filter layer (6) and enters the filter box (1). The filter box (1) is equipped with a water outlet pipe (4) on its side, and the water outlet pipe (4) is connected to the bottom of the inner cavity of the filter box (1). The bottom of the inner cavity of the filter box (1) is equipped with a water guide platform (5). The water guide platform (5) is frustum-shaped, with the lower base area of ​​the frustum being larger than the upper base area, and the lower end of the inclined surface of the frustum being flush with the lower base surface of the water outlet pipe (4). The water guide platform (5) is a hollow truncated cone. The lower end of the filter inner liner (2) is tightly fitted inside the water guide platform (5). The lower end of the filter inner liner (2) extends downward to the bottom of the water guide platform (5) and is equipped with a pad (7). The pad (7) is detachably connected to the bottom of the filter box (1) and the connection is sealed.

2. The wastewater filtration device for power plants according to claim 1, characterized in that, The filter layer (6) is circumferentially disposed on the lower outer wall of the filter inner liner (2), and the bottom edge of the filter layer (6) is not lower than the upper surface of the water guide platform (5).

3. The wastewater filtration device for power plants according to claim 2, characterized in that, The upper end face of the pad (7) is equipped with a threaded sleeve (8) and a threaded tube (11). The threaded sleeve (8) is sleeved around the threaded tube (11). The lower end of the filter inner liner (2) is threadedly fitted onto the outside of the threaded tube (11) and is in close contact with the inner wall of the threaded sleeve (8). The outer wall of the threaded sleeve (8) is threadedly connected to the mounting hole at the bottom of the filter box (1).

4. A wastewater filtration device for power plants according to claim 3, characterized in that, The upper opening of the filter inner liner (2) has an internal thread, and the lower end of the water inlet pipe (3) has an external thread. The upper end of the filter inner liner (2) is threadedly engaged with the lower end of the water inlet pipe (3).

5. A wastewater filtration device for power plants according to any one of claims 1-4, characterized in that, The filter box (1) is equipped with a filter plate (9) installed above the filter layer (6) in its inner cavity. The filter plate (9) divides the inner cavity of the filter box (1) into an upper filter cavity and a lower filter cavity. The water outlet pipe (4) is connected to the lower filter cavity. A drain pipe (10) is also installed on the side of the filter box (1). The drain pipe (10) is connected to the upper filter cavity.

6. A wastewater filtration device for power plants according to claim 5, characterized in that, The filter plate (9) is annular and a filter membrane (15) is inlaid on the annular surface. The outer wall of the filter plate (9) is connected to the inner wall of the filter box (1). A sealing ring (14) that is compatible with the filter inner liner (2) is fixedly fitted at the center of the filter plate (9). The outer wall of the filter inner liner (2) and the inner wall of the sealing ring (14) are tightly fitted together.

7. A wastewater filtration device for power plants according to claim 6, characterized in that, The pore size of the filter membrane (15) is smaller than that of the filter layer (6).

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