Secondary filter screen with integral screen plate capable of being opened and capable of discharging sewage in forward and reverse directions

Abstract

The utility model belongs to the technical field of filtering equipment, and provides a secondary filter screen with an overall openable screen plate and a forward and reverse pollution discharge function, which comprises a shell, an inlet flange is communicated with the top of the shell, and an outlet flange is communicated with one side of the outer wall of the shell; the net body is connected with an inner cavity of the shell, net plates are arranged on the two sides of the net body, the tops of the net plates are hinged to the inner cavity of the shell, the net plates are matched with the net body, a net plate supporting plate is arranged on the bottom wall of the net body, and two symmetrical forward drain outlets are formed in the net plate supporting plate; and the two symmetrical L-shaped forward blow-off pipes are connected with the forward blow-off ports. The design that the net plate can be opened is adopted, the problem that in the prior art, sewage cannot be discharged when the net plate is clamped astringent is effectively solved, water resistance can be remarkably reduced by opening the net plate, and normal operation of the condenser is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of filtration equipment technology, and specifically relates to a secondary filter screen with an openable overall mesh panel and forward and reverse sewage discharge functions. Background Technology

[0002] In industrial water systems, the condenser is one of the key pieces of equipment. Its function is to cool steam and convert it into water, thereby improving the system's thermal efficiency. To maintain the normal operation of the condenser, the water entering the condenser needs to be continuously purified to prevent debris from clogging the tube sheet, copper tubes, or ball catcher, which would affect the cleanliness of the cooling water and the flow characteristics of the condenser inlet water chamber.

[0003] Currently, one of the commonly used purification devices is the secondary filter, which is usually installed at the inlet of the circulating water pump to further remove impurities that may enter the condenser. However, existing secondary filters have some problems. First, they only have a blowdown function; the screen cannot be opened. This means that if the blowdown drive malfunctions or the screen becomes stuck, the secondary filter will experience increased water resistance and be unable to discharge blowdowns, thus reducing the condenser's heat exchange efficiency. In severe cases, it can even block the condenser inlet water pipe, leading to unscheduled unit shutdowns.

[0004] To address the aforementioned issues, a secondary filter with an openable integrated screen and forward / reverse drainage functions is required. This novel secondary filter not only effectively removes impurities from the water, keeping the condenser water chamber clean and ensuring the normal operation of the condenser balls and improving their recovery rate, but also reduces water resistance and ensures the normal operation of the condenser by opening the screen when the drainage drive malfunctions or the screen becomes stuck. Summary of the Invention

[0005] To solve the above-mentioned technical problems, this utility model proposes a secondary filter screen with an openable overall screen plate and forward and reverse sewage discharge functions. The openable screen plate design effectively solves the problem of sewage discharge failure when the screen plate is stuck in the existing problem. By opening the screen plate, water resistance can be significantly reduced, ensuring the normal operation of the condenser.

[0006] The technical solution of this utility model is:

[0007] This utility model proposes a secondary filter screen with an openable overall mesh panel and forward and reverse sewage discharge functions, comprising:

[0008] The shell has an inlet flange connected to the top and an outlet flange connected to one side of the outer wall of the shell;

[0009] The mesh body is connected to the inner cavity of the shell. Mesh plates are provided on both sides of the mesh body. The top of the mesh plate is hinged to the inner cavity of the shell. The mesh plate and the mesh body cooperate with each other. A mesh plate support plate is provided on the bottom wall of the mesh body. The mesh plate support plate has two symmetrical positive sewage outlets.

[0010] Two symmetrical L-shaped forward drain pipes are connected to the forward drain port. The end of the L-shaped forward drain pipe away from the forward drain port penetrates the outer wall of the shell.

[0011] The adjustment section is used to adjust the spacing between the two mesh plates;

[0012] The drive shaft is rotatably connected to the mesh support plate, and the drive shaft is equipped with a scraping unit.

[0013] Preferably, the scraping unit includes a reverse drain pipe coaxially and fixedly connected to the drive shaft, a scraper connected to the outer wall of the reverse drain pipe, the scraper being located in the inner cavity of the housing, an L-shaped reverse drain port connected to the end of the reverse drain pipe away from the drive shaft, one end of the L-shaped reverse drain port being rotatably connected to the reverse drain pipe, and the other end of the L-shaped reverse drain port penetrating through the outer wall of the housing and connected to the outer wall of the housing.

[0014] Preferably, the adjustment section includes:

[0015] Two symmetrical connecting blocks, each corresponding to a mesh panel, and connected to the outer wall of the mesh panel;

[0016] Two symmetrical connecting rods, each corresponding to a connecting block, the connecting rods and connecting blocks are hinged together, and a moving block is connected to the end of the connecting rod away from the connecting block.

[0017] Two symmetrical moving rods, each corresponding to a moving block, and the moving rods and moving blocks are hinged together;

[0018] Two symmetrical telescopic cylinders are provided, with each telescopic cylinder corresponding to a moving rod. The telescopic cylinders are connected to the outer wall of the housing, and the telescopic ends of the cylinders pass through the inner cavity of the housing and are coaxially and fixedly connected to the moving rods. The telescopic ends of the cylinders are also slidably connected to the housing.

[0019] Preferably, a motor is connected to the bottom of the housing, and the output shaft of the motor passes through the bottom wall of the housing and is coaxially and fixedly connected to the drive shaft. The output shaft of the motor is rotatably connected to the housing.

[0020] Preferably, a groove is opened on the outer side of the scraper, and several equally spaced through grooves are opened on the inner side of the scraper, which are connected to the reverse sewage pipe.

[0021] Preferably, the moving rod is located below the outlet flange.

[0022] This utility model has the following advantages and effects compared with the prior art:

[0023] (1) The design of the screen plate can be opened, which effectively solves the problem of sewage discharge when the screen plate is stuck in the existing problem. By opening the screen plate, the water resistance can be significantly reduced, ensuring the normal operation of the condenser.

[0024] (2) This utility model has a forward sewage discharge function and also introduces a reverse sewage discharge function. Forward sewage discharge is achieved through an L-shaped forward sewage discharge pipe, while reverse sewage discharge is achieved through the rotational connection between the reverse sewage discharge pipe and the drive shaft and the external cleaning pump connected to the L-shaped reverse sewage discharge port, making the sewage discharge process more efficient and thorough, and effectively preventing the accumulation and blockage of impurities.

[0025] (3) This utility model uses a motor to drive the scraper to rotate, thereby automatically scraping impurities off the screen. This design not only improves the sewage discharge efficiency but also reduces the need for manual intervention and lowers maintenance costs. The screen spacing is adjustable. Through the combination of the connecting block, connecting rod, moving block, moving rod and telescopic cylinder in the adjustment part, the spacing between the two screens is automatically adjusted, so that the filter can adapt to different water quality and flow conditions, improving the applicability and flexibility of the filter.

[0026] In summary, this utility model provides an efficient, automatic, and adjustable filtration and sewage discharge solution, which effectively solves the problems existing in the prior art, improves the operating efficiency and stability of this utility model, and has significant technological progress and practical value. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 .

[0028] Figure 2 This is a schematic diagram of the internal structure of the present invention. Figure 1 .

[0029] Figure 3 This is a schematic diagram of the mesh support plate structure of this utility model.

[0030] Figure 4 This is a partial structural schematic diagram of the present invention.

[0031] Figure 5 This is a schematic diagram of the scraper structure of this utility model. Figure 1 .

[0032] Figure 6 This is a schematic diagram of the scraper structure of this utility model. Figure 2 .

[0033] Figure label:

[0034] 1. Shell; 10. Inlet flange; 11. Outlet flange;

[0035] 2. Mesh body; 20. Mesh panel; 21. Mesh panel support plate; 22. Forward sewage outlet;

[0036] 3. L-shaped forward drain pipe;

[0037] 4. Drive shaft;

[0038] 5. Reverse drain pipe; 50. Scraper; 51. L-shaped reverse drain outlet; 500. Groove opening; 501. Through groove;

[0039] 6. Connecting block; 60. Connecting rod; 601. Moving block; 61. Moving rod;

[0040] 62. Telescopic cylinder;

[0041] 7. Motor. Detailed Implementation

[0042] To enable those skilled in the art to better understand this utility model, the present utility model will now be further described in conjunction with specific embodiments.

[0043] Example 1:

[0044] like Figures 1-6 As shown, this utility model provides a secondary filter screen with an openable overall mesh panel and forward and reverse sewage discharge functions, comprising:

[0045] The shell 1 has an inlet flange 10 connected to the top of the shell 1 and an outlet flange 11 connected to one side of the outer wall of the shell 1.

[0046] The mesh body 2 is connected to the inner cavity of the shell 1. Mesh plates 20 are provided on both sides of the mesh body 2. The top of the mesh plates 20 is hinged to the inner cavity of the shell 1. The mesh plates 20 cooperate with the mesh body 2. A mesh plate support plate 21 is provided on the bottom wall of the mesh body 2. The mesh plate support plate 21 has two symmetrical positive sewage outlets 22.

[0047] Two symmetrical L-shaped forward drain pipes 3 are connected to the forward drain port 22. The end of the L-shaped forward drain pipe 3 away from the forward drain port 22 passes through the outer wall of the shell 1.

[0048] The adjustment section is used to adjust the spacing between the two mesh plates 20;

[0049] The drive shaft 4 is rotatably connected to the mesh support plate 21, and the drive shaft 4 is equipped with a scraping unit.

[0050] The scraping unit includes a reverse drain pipe 5 coaxially and fixedly connected to the drive shaft 4. A scraper 50 is connected to the outer wall of the reverse drain pipe 5. The scraper 50 is located in the inner cavity of the housing 1. An L-shaped reverse drain port 51 is connected to one end of the reverse drain pipe 5 away from the drive shaft 4. One end of the L-shaped reverse drain port 51 is rotatably connected to the reverse drain pipe 5. The other end of the L-shaped reverse drain port 51 penetrates the outer wall of the housing 1 and is connected to the outer wall of the housing 1.

[0051] The regulating unit includes:

[0052] Two symmetrical connecting blocks 6, each corresponding to a mesh plate 20, and connected to the outer wall of the mesh plate 20;

[0053] Two symmetrical connecting rods 60, each corresponding to a connecting block 6, are hinged to the connecting rod 60 and the connecting block 60. A movable block 601 is connected to the end of the connecting rod 60 away from the connecting block 60.

[0054] Two symmetrical movable rods 61, each corresponding to a movable block 601, are hinged to the movable rods 61 and the movable blocks 601.

[0055] Two symmetrical telescopic cylinders 62 are provided, with each telescopic cylinder 62 corresponding to a moving rod 61. The telescopic cylinder 62 is connected to the outer wall of the housing 1, and the telescopic end of the telescopic cylinder 62 passes through the inner cavity of the housing 1 and is coaxially and fixedly connected to the moving rod 61. The telescopic end of the telescopic cylinder 62 is slidably connected to the housing 1.

[0056] A motor 7 is connected to the bottom of the housing 1. The output shaft of the motor 7 passes through the bottom wall of the housing 1 and is coaxially and fixedly connected to the drive shaft 4. The output shaft of the motor 7 is rotatably connected to the housing 1.

[0057] The scraper 50 has a slot 500 on its outer side and several equally spaced through slots 501 on its inner side. The through slots 501 are connected to the reverse sewage pipe 5.

[0058] The movable rod 61 is located below the outlet flange 11.

[0059] In some embodiments, both the L-shaped forward drain pipe 3 and the L-shaped reverse drain port 51 are connected to valves (not shown in the figure).

[0060] Working principle:

[0061] During the filtration process, industrial water enters the shell 1 through the inlet flange 10. When the water flows through the mesh 2, impurities are intercepted by the mesh plate 20, and clean water flows through the mesh plate 20 to the outlet flange 11 for discharge. This process ensures that the water entering the condenser is purified, thereby improving the operating efficiency and lifespan of the condenser.

[0062] During the forward drainage process, when the impurities intercepted by the mesh plate 20 accumulate to a certain extent, drainage is required. At this time, the L-shaped forward drainage pipe 3 is connected to the mesh plate support plate 21 through the forward drainage port 22. The impurities enter the L-shaped forward drainage pipe 3 through the forward drainage port 22 and are eventually discharged.

[0063] During the reverse sewage discharge process, the reverse sewage pipe 5 is rotatably connected to the drive shaft 4, and the L-shaped reverse sewage outlet 51 is connected to an external cleaning pump. Impurities enter the reverse sewage pipe 5 from the through groove 501 and are discharged.

[0064] The scraping action of the scraper 50 is achieved when the motor 7 is started. The output shaft of the motor 7 rotates, causing the scraper 50 to rotate and scrape the impurities on the screen plate 20.

[0065] The spacing between the screen panels 20 is adjusted by a connecting block 6, a connecting rod 60, a moving block 601, a moving rod 61, and a telescopic cylinder 62. The telescopic cylinder 62 moves the moving rod 61 and the moving block 601 to adjust the spacing between the two screen panels 20, thereby meeting the sewage discharge requirements.

[0066] In summary, this utility model achieves efficient, automatic, and adjustable filtration and sewage discharge functions, effectively solves the problems existing in the prior art, and improves the operating efficiency and stability of this utility model.

[0067] The above are merely preferred embodiments of the present utility model and do not limit the patent scope of the present utility model. All equivalent changes and modifications made within the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A secondary filter screen with an openable integral mesh panel and forward and reverse sewage discharge functions, characterized in that, include: The shell (1) has an inlet flange (10) connected to the top of the shell (1) and an outlet flange (11) connected to one side of the outer wall of the shell (1). The mesh body (2) is connected to the inner cavity of the shell (1). Mesh plates (20) are provided on both sides of the mesh body (2). The top of the mesh plate (20) is hinged to the inner cavity of the shell (1). The mesh plate (20) cooperates with the mesh body (2). A mesh plate support plate (21) is provided on the bottom wall of the mesh body (2). The mesh plate support plate (21) has two symmetrical positive sewage outlets (22). Two symmetrical L-shaped forward drain pipes (3) are connected to the forward drain port (22). The end of the L-shaped forward drain pipe (3) away from the forward drain port (22) penetrates the outer wall of the shell (1). An adjustment section is provided for adjusting the spacing between the two mesh plates (20). The drive shaft (4) is rotatably connected to the mesh support plate (21), and the drive shaft (4) is equipped with a scraping unit.

2. The secondary filter screen with an openable integral mesh panel and forward and reverse sewage discharge function as described in claim 1, characterized in that, The scraping unit includes a reverse drain pipe (5) coaxially fixedly connected to the drive shaft (4). A scraper (50) is connected to the outer wall of the reverse drain pipe (5). The scraper (50) is located in the inner cavity of the housing (1). An L-shaped reverse drain port (51) is connected to one end of the reverse drain pipe (5) away from the drive shaft (4). One end of the L-shaped reverse drain port (51) is rotatably connected to the reverse drain pipe (5). The other end of the L-shaped reverse drain port (51) penetrates the outer wall of the housing (1) and is connected to the outer wall of the housing (1).

3. A secondary filter screen with an openable overall mesh panel and forward and reverse sewage discharge functions as described in claim 1, characterized in that, The regulating unit includes: Two symmetrical connecting blocks (6) are connected to the mesh plate (20) one by one, and the connecting blocks (6) are connected to the outer wall of the mesh plate (20). Two symmetrical connecting rods (60) are connected to the connecting block (6) one by one. The connecting rod (60) is hinged to the connecting block (6). The end of the connecting rod (60) away from the connecting block (6) is connected to a moving block (601). Two symmetrical moving rods (61) are connected to each other, and the moving rods (61) and the moving blocks (601) are hinged together. Two symmetrical telescopic cylinders (62) are provided, and each telescopic cylinder (62) corresponds to a moving rod (61). The telescopic cylinder (62) is connected to the outer wall of the housing (1). The telescopic end of the telescopic cylinder (62) passes through the inner cavity of the housing (1) and is coaxially fixedly connected to the moving rod (61). The telescopic end of the telescopic cylinder (62) is slidably connected to the housing (1).

4. A secondary filter screen with an openable overall mesh panel and forward and reverse sewage discharge functions as described in claim 1, characterized in that, A motor (7) is connected to the bottom of the housing (1). The output shaft of the motor (7) passes through the bottom wall of the housing (1) and is coaxially fixedly connected to the drive shaft (4). The output shaft of the motor (7) is rotatably connected to the housing (1).

5. A secondary filter screen with an openable overall mesh panel and forward and reverse sewage discharge functions as described in claim 1, characterized in that, A slot (500) is opened on the outside of the scraper (50), and several through slots (501) with equal spacing are opened on the inside of the scraper (50). The through slots (501) are connected to the reverse sewage pipe (5).

6. A secondary filter screen with an openable overall mesh panel and forward and reverse sewage discharge functions as described in claim 3, characterized in that, The moving rod (61) is located below the outlet flange (11).

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