Raw water filtering device for make-up water of coal-fired power plant boiler

Abstract

The utility model relates to the technical field of filtering equipment, and discloses a coal-fired power plant boiler make-up water raw water filtering device which comprises a filtering bin, a first filtering net is arranged in the filtering bin, one side of the first filtering net is fixedly connected with a collecting box, and a protection assembly and a recycling assembly are arranged on the outer wall of the first filtering net. The protection assembly comprises a plurality of second springs, the second springs are located on the outer wall of the first filter screen, a plurality of first connecting blocks and second connecting blocks are fixedly connected to one side of the first filter screen, a fixing block is slidably connected to the outer wall of each second connecting block, and a second filter screen is fixedly connected to one side of each fixing block. One end of the second spring is fixedly connected to the outer wall of the second connecting block, and the other end of the second spring is fixedly connected to the inner wall of the fixing block. According to the device disclosed by the utility model, the scouring force of water flow to the surface of the filter screen I is relieved through the stretching of the spring I and the compression of the spring II, so that the effect of protecting the filter screen I is achieved, and the protection property of the device to the filter screen I is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of filtration equipment technology, and in particular to a raw water filtration device for boiler feedwater in coal-fired power plants. Background Technology

[0002] In modern industrial production and domestic water use, the quality of makeup water directly affects the operating efficiency and service life of downstream equipment. The raw water filtration system for boiler makeup water in coal-fired power plants is crucial, undertaking the key task of removing impurities and ensuring water quality meets standards. It is widely used in various industrial production, urban water supply, and sewage treatment fields, and is an important link in ensuring water safety and stable equipment operation.

[0003] Currently, most existing boiler feedwater filtration devices in coal-fired power plants employ relatively simple filter screen structures. Water flows directly through the filter screen, and the screen's pore size intercepts impurities. The underlying technology relies primarily on the natural pressure of the water flow, allowing water to pass through the filter screen under gravity or pressure provided by a pump, thus separating water from impurities. This structure is simple, easy to operate, and can meet basic filtration needs to a certain extent.

[0004] However, this common filtration device has certain problems. In actual use, the water flow has a certain impact force. When the water flow hits the filter screen at high speed, it generates a large scouring force on the filter screen surface. Prolonged exposure to this scouring can easily damage the filter screen, affecting not only the filtration effect but also causing equipment failure, increasing maintenance costs and downtime, and seriously affecting the stable operation of the entire boiler feedwater system. Therefore, a boiler feedwater filtration device for coal-fired power plants is proposed to solve these problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a raw water filtration device for boiler feedwater in coal-fired power plants, which aims to improve the problem that the impact force of the water flow on the surface of the filter screen during use can easily cause damage to the filter screen.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A raw water filtration device for boiler feedwater in a coal-fired power plant includes a filter chamber, a filter screen is installed inside the filter chamber, a collection box is fixedly connected to one side of the filter screen, and a protective component and a recycling component are installed on the outer wall of the filter screen.

[0008] The protective component includes multiple springs II, which are located on the outer wall of the filter screen I. Multiple connecting blocks I and connecting blocks II are fixedly connected to one side of the filter screen I. A transmission plate is rotatably connected inside each connecting block I. A slider is rotatably connected inside each transmission plate. A filter screen II is slidably connected to one side of the slider. The filter screen II is in contact with the inner wall of the filter chamber. Springs I are fixedly connected between adjacent sliders on both sides.

[0009] As a further description of the above technical solution:

[0010] Each of the connecting blocks 2 has a fixed block slidably connected to its outer wall. One side of the fixed block is fixedly connected to the outer wall of the filter screen 2. One end of the spring 2 is fixedly connected to the outer wall of the connecting block 2, and the other end of the spring 2 is fixedly connected to the inner wall of the fixed block.

[0011] As a further description of the above technical solution:

[0012] The recycling assembly includes multiple retaining balls located on the outer wall of the filter screen, and the retaining balls are used to fix the filter chamber and the collection box.

[0013] As a further description of the above technical solution:

[0014] A connecting frame is fixedly connected to the top of the filter screen, and the connecting frame is slidably connected inside the filter chamber.

[0015] As a further description of the above technical solution:

[0016] Both sides of the inside of the connecting frame are fixedly connected to connecting pipes, and each connecting pipe is rotatably connected to a threaded column.

[0017] As a further description of the above technical solution:

[0018] Each of the threaded posts is fixedly connected to a handle at its top end, and each of the connecting tubes is fixedly connected to a connecting shell at its bottom.

[0019] As a further description of the above technical solution:

[0020] The ball is slidably connected inside the connecting shell, and a connecting post is fixedly connected to the bottom of each threaded post;

[0021] As a further description of the above technical solution:

[0022] The connecting post is located inside the connecting shell, and a frustum-shaped locking block is fixedly connected to one end of each connecting post.

[0023] As a further description of the above technical solution:

[0024] The frustum-shaped locking block and the locking ball are fitted together, and each of the connecting shells has a fixing shell on its outer wall;

[0025] As a further description of the above technical solution:

[0026] The outer wall of the fixed shell is fixedly connected to the inside of the filter chamber, and the locking ball engages with the inside of the fixed shell.

[0027] This utility model has the following beneficial effects:

[0028] 1. In this utility model, the scouring force of the water flow on the surface of the filter screen is reduced by the stretching of spring one and the compression of spring two, thereby achieving the effect of protecting the filter screen. This solves the problem that the impact force of the water flow on the surface of the filter screen can easily damage the filter screen during use, and enhances the protection of the filter screen.

[0029] 2. In this utility model, the installation and disassembly of the filter component are achieved by the engagement between the locking ball and the inner wall of the fixed shell, which facilitates the recycling of filtered impurities. This solves the problem that the filter component usually needs to be disassembled with special tools during the process of recycling filtered impurities, which is time-consuming. This improves the efficiency of waste and impurity recycling. Attached Figure Description

[0030] Figure 1 This is a three-dimensional schematic diagram of the raw water filtration device for boiler feedwater in a coal-fired power plant proposed in this utility model.

[0031] Figure 2 This is a schematic diagram of the internal structure of the filter chamber of the raw water filtration device for boiler feedwater in a coal-fired power plant proposed in this utility model.

[0032] Figure 3 This is a schematic diagram of the spring-explosion structure of the raw water filtration device for boiler feedwater in a coal-fired power plant proposed in this utility model.

[0033] Figure 4 This is a schematic diagram of the ball-operated planar structure of the raw water filtration device for boiler feedwater in a coal-fired power plant proposed in this utility model.

[0034] Figure 5 This is a technical roadmap of the process system for the raw water filtration device for boiler feedwater in a coal-fired power plant, as proposed in this utility model.

[0035] Legend:

[0036] 1. Filter chamber; 2. Collection box; 3. Filter screen one; 4. Connecting block one; 5. Transmission plate; 6. Spring one; 7. Sliding block; 8. Filter screen two; 9. Connecting block two; 10. Fixing block; 11. Spring two; 12. Connecting frame; 13. Connecting pipe; 14. Threaded column; 15. Connecting shell; 16. Fixing shell; 17. Connecting column; 18. Frustum-shaped locking block; 19. Ball locking block; 20. Handle. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] Reference Figure 1 and Figure 5 An embodiment of this utility model provides a raw water filtration device for boiler feedwater in a coal-fired power plant, including a filter chamber 1, a filter screen 3 inside the filter chamber 1, a collection box 2 fixedly connected to one side of the filter screen 3, and a protective component and a recycling component on the outer wall of the filter screen 3.

[0039] Specifically, the entire water treatment process begins with the discharge of circulating water. The discharged wastewater first enters the circulating water drainage tank for collection, then flows into a crystallization and granulation fluidized bed, where crystallization and granulation processes remove large particles and some pollutants. The treated water, along with supplemental Yangtze River water, flows into a comprehensive water tank, where it is mixed and then enters an intermediate water tank for temporary storage. Next, the water flows into a high-speed filter for preliminary filtration, removing suspended solids and large particles, and then into a clarification tank for sedimentation and clarification, further removing remaining suspended solids. The clarified water then enters the primary desalination tank, where a primary reverse osmosis unit uses membrane separation technology to remove most dissolved salts and organic matter. The water treated by the primary reverse osmosis unit enters the secondary desalination tank, where a secondary reverse osmosis unit further improves water quality, reducing residual salts and impurities. A portion of the water from the primary desalination tank flows into the ultrafiltration tank, where ultrafiltration removes fine particles and bacteria, improving water quality stability. The permeate from the secondary reverse osmosis unit then enters the EDI unit, where deep ion removal technology further enhances water purity. Finally, the permeate is stored in a demineralized water tank. The final treated pure water is stored in the first-stage demineralized water tank as the final reserve water for high-quality industrial water or other uses. The entire process uses multi-stage filtration, reverse osmosis, ultrafiltration, and electro-deionization technologies to effectively remove suspended solids, dissolved salts, organic pollutants, and microorganisms from the water, ensuring that the produced water meets the technical standards required for industrial or high-purity water.

[0040] Reference Figures 1-3 The protective components include multiple springs 11, located on the outer wall of filter screen 3, which protect the filter screen 3 from damage caused by water flow impact. Multiple connecting blocks 4 and 9 are fixedly connected to one side of filter screen 3. A fixing block 10 is slidably connected to the outer wall of each connecting block 9. Filter screen 8 is fixedly connected to one side of the fixing block 10, and the filter screen 8 is securely connected via the fixing block 10, thereby enhancing its structural stability and durability. One end of spring 11 is fixedly connected to the outer wall of connecting block 9, and the other end is fixedly connected to the inner wall of fixing block 10. The elasticity of spring 11 effectively alleviates the pressure on filter screen 3 during water flow impact, reducing wear. A transmission plate 5 is rotatably connected inside each connecting block 4. The rotational design of the transmission plate 5 enables the mutual cooperation and force transmission between components through mechanical transmission parts, enhancing the flexibility and stability of the device. Each transmission plate 5 has a slider 7 rotatably connected inside. The function of the slider 7 is to provide more precise motion control. It is slidably connected inside the filter screen 8 to ensure the stable movement of the filter screen 8 during operation. A spring 6 is fixedly connected between adjacent sliders 7. The spring 6 can effectively slow down the movement of the slider 7 through tension, preventing damage caused by excessive movement. At the same time, the spring 6 also enhances the buffering capacity of the entire component and improves the durability of the device.

[0041] Specifically, during the water filtration process, the scouring force of the water flow propels the filter screen 3, causing it to shift. As the filter screen 3 moves, connecting block 4 and connecting block 9 move synchronously. During this process, the movement of connecting block 9 compresses spring 11, generating a certain elastic force. Simultaneously, the movement of connecting block 4, via transmission plate 5, pushes the sliders 7 on both sides to move in the opposite direction. This reverse movement causes spring 6 to stretch. The stretching of spring 6 combined with the compression of spring 11 forms a buffer mechanism, effectively reducing the scouring force exerted by the water flow on the surface of filter screen 3. Through this structural design, the elastic deformation of springs 6 and 11 effectively protects filter screen 3 from water flow impacts, reducing wear and extending its service life. In addition, the tension of spring 6 and the compression of spring 11 not only improve the durability of the equipment, but also enhance the protection of filter screen 3, so that the entire filter component can maintain more stable performance when facing large flow or high impact water flow. Through this design, the entire filter device can effectively cope with the wear and tear caused by water flow during long-term operation, ensuring the efficient operation of the water source filter device and improving its overall service life.

[0042] Reference Figure 2 and Figure 4The recycling assembly includes multiple retaining balls 19 located on the outer wall of the filter screen 3. The movable design of the retaining balls 19 allows for automatic adjustment during filtration, ensuring the stability of the filter components. A connecting frame 12 is fixedly connected to the top of the filter screen 3. The connecting frame 12 supports and stabilizes the entire recycling assembly, facilitating subsequent operations. The connecting frame 12 is slidably connected inside the filter chamber 1. This sliding design allows for more flexible position adjustment of the recycling assembly during filtration. Connecting pipes 13 are fixedly connected to both sides of the connecting frame 12. Each connecting pipe 13 has a rotatably connected threaded post 14. The rotation of the threaded post 14 allows for adjustment and control of the recycling assembly, enhancing the operability of the device. A handle 20 is fixedly connected to the top of each threaded post 14, providing a stable grip for easy rotation and ensuring smooth adjustment of the device. A connecting shell 15 is fixedly connected to the bottom of each connecting pipe 13, connecting the recycling assembly to other parts of the filter components for secure fixation. The ball 19 is slidably connected inside the connecting shell 15, allowing it to move smoothly within the shell, further improving the component's fluidity and adjustability. Each threaded post 14 has a connecting post 17 fixedly connected to its bottom. The connecting post 17 adjusts the up and down of the recycling assembly by rotating the threaded post 14, providing more precise operational adjustments. Each connecting post 17 has a frustum-shaped locking block 18 fixedly connected to one end. The frustum-shaped locking block 18 fits snugly against the ball 19, forming a good cooperation mechanism that ensures the ball 19 can unlock smoothly when needed, avoiding jamming and improving recycling efficiency. Each connecting shell 15 has a fixing shell 16 on its outer wall. The fixing shell 16 provides external support for the connecting shell 15, ensuring the stability of the entire recycling assembly during operation. The outer wall of the fixing shell 16 is fixedly connected to the inside of the filter chamber 1, ensuring the recycling assembly remains in a fixed position within the filter chamber 1. The ball 19 engages with the inside of the fixed shell 16, so that the ball 19 can be firmly locked in the filter chamber 1, preventing it from shifting or falling off during operation, ensuring the efficient operation of the recovery component and the smooth recovery of filtered impurities.

[0043] Specifically, during the recovery of filtered impurities, the handle 20 is first rotated, causing the threaded column 14 to rotate, which in turn pushes the frustum-shaped locking block 18 at one end of the connecting column 17. This movement causes the frustum-shaped locking block 18 to move out of the outer wall of the locking ball 19, providing sufficient space for the movement of the locking ball 19. After the outer wall of the locking ball 19 is released from its locking position, it can move freely, further expanding the operating space. Subsequently, the connecting frame 12 is pulled upwards. The upward pull of the connecting frame 12 causes the inner wall of the fixed shell 16 to push the locking ball 19 inwards into the connecting shell 15. After being pushed by the inner wall, the locking ball 19 begins to retract inwards, thereby pushing the connecting shell 15 out of the inner wall of the fixed shell 16. At this point, the separation of the connecting shell 15 and the fixed shell 16 is completed, allowing the filter component to be disassembled smoothly. Through this structural design, the entire filter component becomes more efficient and convenient in recovering impurities after filtration. Users can easily disassemble the filter component to facilitate the cleaning and recovery of filtered impurities, thereby ensuring the continuous and efficient operation of the equipment.

[0044] Working Principle: The entire water treatment process begins with the discharge of circulating water. After being collected in a drainage pond, the wastewater undergoes a crystallization granulation fluidized bed process to remove large particulate impurities before being combined with Yangtze River water into a comprehensive water tank. The water then passes through a high-speed filter and a clarification tank for initial removal of suspended solids and impurities. After passing through a primary reverse osmosis unit to remove most salts and organic matter, the water enters a secondary reverse osmosis unit for further purification. A portion of the water passes through an ultrafiltration unit to remove fine particles and bacteria. Finally, the water undergoes deep deionization via an EDI unit and is stored in a demineralized water tank as a high-quality pure water reserve. The entire process, through multi-stage filtration and purification, gradually improves water quality to meet industrial or high-purity water requirements.

[0045] During the water filtration process, the scouring force of the water flow pushes the filter screen 3 to move, thereby causing the connecting block 4 and the connecting block 9 to move synchronously. While the connecting block 9 is moving, it will drive the spring 11 to compress. While the connecting block 4 is moving, it will push the sliders 7 on both sides to move in the opposite direction through the transmission plate 5, causing the spring 6 to be stretched. The stretching of the spring 6 and the compression of the spring 11 are used to reduce the scouring force of the water flow on the surface of the filter screen 3, thereby enhancing the protective properties of the filter screen 3.

[0046] During the process of recovering filtered impurities, rotate the handle 20, thereby using the threaded post 14 to push the frustum block 18 at one end of the connecting post 17 out of the outer wall of the ball 19, providing space for the ball 19 to move. Then, pull the connecting frame 12 upward, using the inner wall of the fixed shell 16 to push the ball 19 into the connecting shell 15, thus removing the connecting shell 15 from the inner wall of the fixed shell 16, thereby disassembling the filter component and facilitating the cleaning and recovery of filtered impurities.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A raw water filtration device for boiler feedwater in a coal-fired power plant, comprising a filter chamber (1), characterized in that: The filter chamber (1) is equipped with a filter screen (3), and a collection box (2) is fixedly connected to one side of the filter screen (3). The outer wall of the filter screen (3) is equipped with a protective component and a recycling component. The protective assembly includes multiple springs (11), which are located on the outer wall of the filter screen (3). Multiple connecting blocks (4) and connecting blocks (9) are fixedly connected to one side of the filter screen (3). A transmission plate (5) is rotatably connected inside each connecting block (4), and a slider (7) is rotatably connected inside each transmission plate (5). A filter screen (8) is slidably connected to one side of the slider (7). The filter screen (8) is in contact with the inner wall of the filter chamber (1). A spring (6) is fixedly connected between adjacent sliders (7).

2. The coal-fired power plant boiler feedwater raw water filtration apparatus of claim 1, wherein: Each of the connecting blocks 2 (9) has a fixed block (10) slidably connected to its outer wall. One side of the fixed block (10) is fixedly connected to the outer wall of the filter screen 2 (8). One end of the spring 2 (11) is fixedly connected to the outer wall of the connecting block 2 (9), and the other end of the spring 2 (11) is fixedly connected to the inner wall of the fixed block (10).

3. The coal-fired power plant boiler feedwater raw water filtration apparatus of claim 1, wherein: The recycling assembly includes multiple retaining balls (19) located on the outer wall of the filter screen (3) and used to fix the filter chamber (1) and the collection box (2).

4. The coal-fired power plant boiler makeup water raw water filtration apparatus of claim 3, wherein: The top of the filter screen (3) is fixedly connected to a connecting frame (12), which is slidably connected inside the filter chamber (1).

5. The coal-fired power plant boiler makeup water raw water filtration apparatus of claim 4, wherein: The connecting frame (12) has connecting pipes (13) fixedly connected to both sides inside, and each connecting pipe (13) has a threaded column (14) rotatably connected inside.

6. The coal-fired power plant boiler makeup water raw water filtration apparatus of claim 5, wherein: Each of the threaded posts (14) is fixedly connected to a handle (20) at its top end, and each of the connecting tubes (13) is fixedly connected to a connecting shell (15) at its bottom.

7. The coal-fired power plant boiler makeup water raw water filtration apparatus of claim 6, wherein: The ball (19) is slidably connected inside the connecting shell (15), and a connecting post (17) is fixedly connected to the bottom of each threaded post (14).

8. The coal-fired power plant boiler makeup water raw water filtration apparatus of claim 7, wherein: The connecting post (17) is located inside the connecting shell (15), and a frustum block (18) is fixedly connected to one end of each connecting post (17).

9. The raw water filtration device for boiler feedwater in a coal-fired power plant according to claim 8, characterized in that: The frustum block (18) and the ball (19) are fitted together, and each of the connecting shells (15) has a fixing shell (16) on its outer wall.

10. The coal-fired power plant boiler feedwater raw water filtration apparatus of claim 9, wherein: The outer wall of the fixed shell (16) is fixedly connected to the inside of the filter chamber (1), and the locking ball (19) is engaged with the inside of the fixed shell (16).

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