A bar screen for wastewater treatment

Abstract

This utility model discloses a wastewater treatment bar screen, applied in the field of bar screen technology. It includes a first bar frame, a second bar frame on the back of the first bar frame, a first bar plate and a second bar plate respectively placed inside the first and second bar frames, a first fixing plate and a second fixing plate bolted to the top of the first and second bar frames respectively, a first retaining seat and a second retaining seat bolted to the bottom of the first and second fixing plates respectively, and a first retaining plate and a second retaining plate integrally formed on the top of the first and second bar plates respectively. It enables a modular spacing adjustment function, eliminating the burden of disassembly and re-fixing by personnel. It can be flexibly adjusted according to usage, has good stability, and allows for easy replacement of individual bar sections. Operation is simple and convenient, reducing the economic burden on users, and offering high flexibility and practicality.

Description

Technical Field

[0001] This utility model belongs to the field of bar screen technology, and specifically relates to a bar screen for sewage treatment. Background Technology

[0002] Wastewater treatment bar is a device used to continuously and automatically intercept and remove suspended solids and floating debris from wastewater. It is mainly used in urban wastewater treatment plants, water supply industry, power plant inlets, and pre-screening of industrial wastewater. Its core function is to intercept large solids in wastewater through metal bars to prevent them from entering subsequent treatment equipment.

[0003] Currently, Chinese utility model patent CN210795821U discloses a bar screen for sewage treatment. Although this bar screen is composed of a frame, horizontal bars, and vertical bars, and its surface is coated with a paint layer to reduce rust, it still has other problems during use. For example, it cannot adjust the spacing of the bars in combination. The large bar spacing is for removing suspended solids, while the small bar spacing is for removing fine impurities. The existing bar screens with these two spacings are designed independently and cannot be changed to suit the current situation. When adjustment is needed, the original bar screen must be removed and a new one installed, which is cumbersome and complicated. Moreover, broken bars cannot be replaced individually. The bars are subject to impacts and collisions from external objects in the bar screen. When they deform or break due to excessive force, the entire bar screen must be replaced to ensure the interception quality, which increases the economic cost for users. Utility Model Content

[0004] The purpose of this utility model is to provide a bar screen for sewage treatment, which has the advantages of enabling combined spacing adjustment and facilitating the individual replacement of the bar screens.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a bar screen for sewage treatment, comprising a first grid frame, a second grid frame disposed on the back of the first grid frame, a first grid plate and a second grid plate respectively placed inside the first grid frame and the second grid frame, a first fixing plate and a second fixing plate respectively bolted to the top of the first grid frame and the top of the second grid frame, a first card seat and a second card seat respectively bolted to the bottom of the first fixing plate and the second fixing plate, a first card plate and a second card plate integrally formed on the top of the first grid plate and the second grid plate, a first card slot for cooperating with the first card plate being provided at the bottom of the first card seat, and a second card slot for cooperating with the second card plate being provided at the bottom of the second card seat.

[0006] The above technical solution enables a combined spacing adjustment function, eliminating the burden of dismantling and re-fixing by personnel. It can be flexibly adjusted according to usage, has good stability, and allows for easy replacement of individual grid bars. The operation is simple and convenient, reducing the economic burden on users and offering high flexibility and practicality.

[0007] The present invention is further configured such that a first guide rod is welded to the bottom of the first grid plate, a first guide groove is formed at the bottom of the first grid frame to cooperate with the first guide rod, a second guide rod is welded to the bottom of the second grid plate, and a second guide groove is formed at the bottom of the second grid frame to cooperate with the second guide rod.

[0008] The above technical solution, through the setting of the first guide rod, the first guide groove, the second guide rod and the second guide groove, can limit and guide the first grid plate and the second grid plate, helping the user to quickly place them into position when replacing the first grid plate and the second grid plate.

[0009] The present invention is further configured such that a connecting plate and a fixing frame are welded to the top of the first grid frame and the second grid frame respectively, a movable plate is provided inside the fixing frame, a limit spring is bolted between the top of the movable plate and the fixing frame by a spring fixing piece, a limit pin is welded to the bottom of the movable plate, and a limit groove is provided on the top of the connecting plate to cooperate with the limit pin.

[0010] By adopting the above technical solution, the second grid frame can be fixed by setting up a connecting plate, a fixed frame, a movable plate, a limiting spring, and a limiting pin, thereby improving the stability between the second grid frame and the first grid frame.

[0011] The present invention is further configured such that a fixing rod is welded to the top of the movable plate, and the other end of the fixing rod extends through to the outside of the fixing frame and is bolted to a pull plate.

[0012] The above technical solution allows users to easily lift the movable plate by using a fixed rod and a pull plate.

[0013] The present invention is further configured such that the first grid frame, the second grid frame, the first grid plate, the second grid plate, the first fixing plate, and the second fixing plate are all made of stainless steel.

[0014] The above technical solution, including the first grid frame, the second grid frame, the first grid plate, the second grid plate, the first fixing plate, and the second fixing plate, features high strength, low density, and excellent corrosion resistance.

[0015] The present invention is further configured such that the width of the first grid frame and the second grid frame are the same, the width of the first grid plate and the second grid plate are the same, and the width of the first grid plate and the second grid plate is twice the width of the first grid frame and the second grid frame.

[0016] In summary, this utility model has the following beneficial effects: 1. First, fix the first grid frame to the designated position with screws. When the spacing needs to be reduced after the first grid frame is fixed, pick up the second grid frame and pull it upward by grasping the pull plate. When the pull plate is pulled up, it will drive the moving plate and the limit pin to move upward through the fixing rod. When the pull plate is pulled up to the bottom, push the protruding end of the second grid plate inside the second grid frame into the two first grid plates in the first grid frame. After pushing it in to the bottom and making the first grid frame and the second grid frame fit together, release the pull plate. After the pull plate is released, the limit spring will push the moving plate to reset so that the limit pin is inserted into the limit groove in the connecting plate. This can realize the combined spacing adjustment function, eliminating the burden of personnel to disassemble and re-fix it. It can be flexibly adjusted according to the usage and has good stability. 2. When the internal grid bars are damaged, first use tools to remove the first and second fixing plates at the top of the first and second grid frames. After removing the first and second fixing plates, lift them outwards to remove the first and second brackets. Then pull out the damaged first or second grid plate from below. Insert the new first or second grid plate and then re-fix the first and second fixing plates. This allows for easy replacement of individual grid bars, is simple and convenient to operate, reduces the economic burden on users, and is highly flexible and practical. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the front grille assembly of this utility model; Figure 3 This is a schematic diagram of the rear grille assembly of this utility model; Figure 4 This is a partial bottom view of the structure of this utility model; Figure 5 This is the utility model Figure 3 Enlarged diagram of point A in the middle.

[0018] Reference numerals in the attached drawings: 1. First grid frame; 2. Second grid frame; 3. First grid plate; 4. Second grid plate; 5. First fixing plate; 6. Second fixing plate; 7. First card holder; 8. Second card holder; 9. First card plate; 10. Second card plate; 11. First card slot; 12. Second card slot; 13. First guide rod; 14. First guide groove; 15. Second guide rod; 16. Second guide groove; 17. Connecting plate; 18. Fixing frame; 19. Moving plate; 20. Limiting spring; 21. Limiting pin; 22. Fixing rod; 23. Pull plate. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] Example 1: refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A wastewater treatment screen includes a first screen frame 1, a second screen frame 2 on the back of the first screen frame 1, a first screen plate 3 and a second screen plate 4 respectively placed inside the first screen frame 1 and the second screen frame 2, and a first fixing plate 5 and a second fixing plate 6 bolted to the top of the first screen frame 1 and the top of the second screen frame 2 respectively. The first screen frame 1 is first fixed to a designated position with screws. When the spacing needs to be reduced after the first screen frame 1 is fixed, the second screen frame 2 is lifted and a pull plate 23 is grasped and pulled upwards. When the pull plate 23 is pulled upwards, it is fixed by a fixing rod 22. The lower moving plate 19 and the limiting pin 21 move upward. When the pulling plate 23 is pulled up to the bottom, the protruding end of the second grid plate 4 inside the second grid frame 2 is pushed into the space between the two first grid plates 3 in the first grid frame 1. When the first grid frame 1 and the second grid frame 2 are pressed together, the pulling plate 23 is released. After the pulling plate 23 is released, the limiting spring 20 will push the moving plate 19 to reset so that the limiting pin 21 is inserted into the limiting groove in the connecting plate 17. This can realize the combined spacing adjustment function, eliminating the burden of disassembly and re-fixing by personnel. It can be flexibly adjusted according to the usage and has good stability.

[0021] refer to Figure 1 , Figure 2 , Figure 3 and Figure 5 The top of the first grid frame 1 and the second grid frame 2 are respectively welded with a connecting plate 17 and a fixing frame 18. The fixed frame 18 is provided with a movable plate 19. The top of the movable plate 19 and the fixed frame 18 are connected by a spring fixing piece to a limit spring 20. The bottom of the movable plate 19 is welded with a limit pin 21. The top of the connecting plate 17 is provided with a limit groove that cooperates with the limit pin 21. Through the arrangement of the connecting plate 17, the fixing frame 18, the movable plate 19, the limit spring 20 and the limit pin 21, the second grid frame 2 can be fixed, which improves the stability between the second grid frame 2 and the first grid frame 1.

[0022] refer to Figure 3 and Figure 5 A fixing rod 22 is welded to the top of the movable plate 19. The other end of the fixing rod 22 extends through the outside of the fixed frame 18 and is bolted to a pull plate 23. With the setting of the fixing rod 22 and the pull plate 23, it is easy for the user to pull up and lift the movable plate 19.

[0023] refer to Figure 1 , Figure 2 and Figure 3The first grid frame 1, the second grid frame 2, the first grid plate 3, the second grid plate 4, the first fixing plate 5, and the second fixing plate 6 are all made of stainless steel. The first grid frame 1, the second grid frame 2, the first grid plate 3, the second grid plate 4, the first fixing plate 5, and the second fixing plate 6 have the characteristics of high strength, low density, and excellent corrosion resistance.

[0024] refer to Figure 1 , Figure 2 and Figure 3 The widths of the first grid frame 1 and the second grid frame 2 are the same, the widths of the first grid plate 3 and the second grid plate 4 are the same, and the widths of the first grid plate 3 and the second grid plate 4 are twice the widths of the first grid frame 1 and the second grid frame 2.

[0025] Brief description of the usage process: First, fix the first grid frame 1 to the designated position with screws. When it is necessary to reduce the spacing after the first grid frame 1 is fixed, pick up the second grid frame 2 and grab the pull plate 23 and pull it upward. When the pull plate 23 is pulled up, it will drive the moving plate 19 and the limit pin 21 to move upward through the fixing rod 22. When the pull plate 23 is pulled up to the bottom, the protruding end of the second grid plate 4 inside the second grid frame 2 is pushed into the space between the two first grid plates 3 in the first grid frame 1. After pushing it in to the bottom and making the first grid frame 1 and the second grid frame 2 fit together, the pull plate 23 is released. After the pull plate 23 is released, the limit spring 20 will push the moving plate 19 to reset so that the limit pin 21 is inserted into the limit groove in the connecting plate 17.

[0026] Example 2: refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 A wastewater treatment screen has a first mounting plate 5 and a second mounting plate 6 bolted to the bottom of the first mounting plate 5 and the second mounting plate 6, respectively. The top of the first screen plate 3 and the second screen plate 4 are integrally formed with a first mounting plate 9 and a second mounting plate 10, respectively. The bottom of the first mounting plate 7 has a first mounting groove 11 that cooperates with the first mounting plate 9, and the bottom of the second mounting plate 8 has a second mounting groove 12 that cooperates with the second mounting plate 10. When the internal screen bars are damaged, the first mounting plate 5 and the second mounting plate 6 at the top of the first screen frame 1 and the second screen frame 2 are first removed with tools. After the first mounting plate 5 and the second mounting plate 6 are removed, they are lifted outward to remove the first mounting plate 7 and the second mounting plate 8. Then, the damaged first screen plate 3 or the second screen plate 4 below is pulled upward. Then, a new first screen plate 3 or the second screen plate 4 is inserted and the first mounting plate 5 and the second mounting plate 6 are re-fixed. This allows for easy replacement of individual screen bars, is simple and convenient to operate, reduces the economic burden on users, and has high flexibility and practicality.

[0027] refer to Figure 2 and Figure 3The bottom of the first grid plate 3 is welded with a first guide rod 13, and the bottom of the first grid frame 1 is provided with a first guide groove 14 that works in conjunction with the first guide rod 13. The bottom of the second grid plate 4 is welded with a second guide rod 15, and the bottom of the second grid frame 2 is provided with a second guide groove 16 that works in conjunction with the second guide rod 15. By setting the first guide rod 13, the first guide groove 14, the second guide rod 15, and the second guide groove 16, the first grid plate 3 and the second grid plate 4 can be limited and guided, helping the user to quickly place the first grid plate 3 and the second grid plate 4 into place when replacing them.

[0028] Brief description of usage: When the internal grid is damaged, first use a tool to remove the first fixing plate 5 and the second fixing plate 6 at the top of the first grid frame 1 and the second grid frame 2. After removing the first fixing plate 5 and the second fixing plate 6, lift them outward to remove the first card holder 7 and the second card holder 8. Then pull out the damaged first grid plate 3 or the second grid plate 4 from below. After inserting the new first grid plate 3 or the second grid plate 4, re-fix the first fixing plate 5 and the second fixing plate 6.

[0029] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.

[0030] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A grille for sewage treatment comprising a first frame (1), characterized in that: A second grid frame (2) is provided on the back of the first grid frame (1). A first grid plate (3) and a second grid plate (4) are respectively placed inside the first grid frame (1) and the second grid frame (2). A first fixing plate (5) and a second fixing plate (6) are respectively bolted to the top of the first grid frame (1) and the top of the second grid frame (2). A first card seat (7) and a second card seat (8) are respectively bolted to the bottom of the first fixing plate (5) and the second fixing plate (6). A first card plate (9) and a second card plate (10) are integrally formed on the top of the first grid plate (3) and the second grid plate (4). A first card slot (11) is opened at the bottom of the first card seat (7) to cooperate with the first card plate (9). A second card slot (12) is opened at the bottom of the second card seat (8) to cooperate with the second card plate (10).

2. A screen for sewage treatment according to claim 1, wherein: The bottom of the first grid plate (3) is welded with a first guide rod (13), the bottom of the first grid frame (1) is provided with a first guide groove (14) that works with the first guide rod (13), the bottom of the second grid plate (4) is welded with a second guide rod (15), and the bottom of the second grid frame (2) is provided with a second guide groove (16) that works with the second guide rod (15).

3. A screen for sewage treatment according to claim 1, wherein: The top of the first grid frame (1) and the second grid frame (2) are respectively welded with a connecting plate (17) and a fixed frame (18). The fixed frame (18) is provided with a movable plate (19). The top of the movable plate (19) and the fixed frame (18) are connected by a spring fixing piece to a limiting spring (20). The bottom of the movable plate (19) is welded with a limiting pin (21). The top of the connecting plate (17) is provided with a limiting groove that cooperates with the limiting pin (21).

4. A screen for sewage treatment according to claim 3, wherein: A fixing rod (22) is welded to the top of the movable plate (19), and the other end of the fixing rod (22) extends through the outside of the fixing frame (18) and is bolted to a pull plate (23).

5. The screen according to claim 1, wherein: The first grid frame (1), the second grid frame (2), the first grid plate (3), the second grid plate (4), the first fixing plate (5), and the second fixing plate (6) are all made of stainless steel.

6. A bar screen for wastewater treatment according to claim 1, characterized in that: The first grid frame (1) and the second grid frame (2) have the same width, the first grid plate (3) and the second grid plate (4) have the same width, and the width of the first grid plate (3) and the second grid plate (4) is twice the width of the first grid frame (1) and the second grid frame (2).

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