Double-layer self-cleaning type rotary grating decontamination assembly and sewage treatment pretreatment equipment

Abstract

The invention relates to the technical field of sewage treatment, in particular to a double-layer self-cleaning type rotary grating decontamination assembly and sewage treatment pretreatment equipment. The assembly comprises grating side plates, grating plates are arranged at the bottoms of the grating side plates, side pushing blocks with receding grooves are symmetrically installed at the tops of the grating side plates, trapezoidal sliding plates and trapezoidal pushing plates are slidably connected into the side plates, one sides of the trapezoidal sliding plates are connected with the groove walls through tension springs, inserting blocks are fixed to the other sides of the trapezoidal sliding plates, and rotating blocks drive the trapezoidal pushing plates to move through lead screws to control the inserting blocks to stretch out and draw back so as to achieve assembly and disassembly of the grating side plates. The equipment further comprises a sewage treatment box, an L-shaped top plate in sliding connection and a sewage storage box with a chute. After sewage is filtered, the servo motor drives the grating side plate to incline, impurities slide into the dirt storage box and are discharged through the inclined groove, the dirt discharging hole and the discharging inclined plate set, and when one set is cleaned, the other set can continue to work. According to the structure, self-cleaning, non-stop decontamination and convenient maintenance are realized, and the sewage treatment continuity and the operation efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a double-layer self-cleaning rotary bar screen cleaning assembly and wastewater pretreatment equipment. Background Technology

[0002] In the field of wastewater treatment, bar screens are commonly used pretreatment equipment. Their main function is to intercept larger suspended solids and floating matter in wastewater to prevent these impurities from entering subsequent treatment units and affecting treatment efficiency and normal equipment operation. However, traditional bar screen equipment has many problems in practical applications.

[0003] On the one hand, traditional bar screens are usually fixed structures. After long-term operation, a large amount of impurities accumulate on the surface of the bar screen, causing blockage, reducing water flow capacity, and affecting sewage treatment efficiency. To clean the impurities on the bar screen, it is often necessary to shut down the machine for manual cleaning. This not only increases the labor intensity but also causes the sewage treatment process to be interrupted, affecting the stable operation of the entire sewage treatment system.

[0004] On the other hand, while some rotatable bar screens have solved the problem of impurity removal to some extent, they have structural design flaws. For example, the rotating mechanism of some devices is complex, inconvenient to operate, and prone to malfunction during rotation, affecting the reliability and service life of the equipment. In addition, existing equipment also has shortcomings in impurity discharge; poor discharge can easily lead to impurity accumulation inside the equipment, further affecting its normal operation.

[0005] Therefore, developing a wastewater pretreatment equipment with efficient decontamination and self-cleaning functions, stable structure, convenient operation, and smooth impurity discharge is of great practical significance. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies, such as traditional fixed-structure bar screens, which accumulate a large amount of impurities on their surface after prolonged operation, leading to blockage, reduced water flow capacity, and decreased wastewater treatment efficiency. Cleaning these impurities often requires manual shutdown, increasing labor intensity and disrupting the wastewater treatment process, thus affecting the stable operation of the entire system. While some rotatable bar screens address the impurity cleaning issue to some extent, their structural design has flaws. For example, some devices have complex rotating mechanisms, making operation inconvenient and prone to malfunctions during rotation, affecting reliability and lifespan. Furthermore, existing equipment is inadequate in impurity discharge; poor discharge can lead to accumulation within the equipment, further impacting its normal operation. Therefore, this invention proposes a double-layer self-cleaning rotating bar screen cleaning component and wastewater pretreatment equipment.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A double-layer self-cleaning rotating bar screen cleaning assembly includes a bar screen side plate. A bar screen plate is fixedly installed at the bottom of the bar screen side plate, and two symmetrically arranged side push blocks are fixedly installed at the top of the bar screen side plate. A clearance groove is opened on one side of each of the two side push blocks. A rectangular groove I is provided on one side of the grille side plate, and a connected rectangular groove II is provided on the top inner wall of the rectangular groove I. A trapezoidal sliding plate is slidably connected to the inner wall of the rectangular groove I, and two tension springs are provided between one side of the trapezoidal sliding plate and one side inner wall of the rectangular groove I. A trapezoidal push plate is slidably connected inside the rectangular groove II, and the trapezoidal push plate cooperates with the trapezoidal sliding plate; A plug is fixedly installed on one side of the trapezoidal slide plate, a circular groove is opened on the top of the grid side plate, a rotating block is rotatably connected inside the circular groove, a screw is fixedly installed at the bottom of the rotating block, and the bottom of the screw extends rotatably into the interior of the rectangular groove II and is threadedly connected to the trapezoidal push plate. When the rotating block is rotated, the lead screw drives the trapezoidal push plate to move, which in turn pushes the trapezoidal slide plate to move laterally, causing the insert block to retract or extend, thereby realizing the connection or disassembly of the grid side plate.

[0008] In one possible design, the tension springs are symmetrically arranged on one side of the trapezoidal slide to provide tension for the trapezoidal slide to return to its original position.

[0009] A wastewater pretreatment device includes a double-layer self-cleaning rotary bar screen as described above.

[0010] In one possible design, a wastewater treatment tank is also included, the bottom inner wall of which is inclined, one end of which is fixedly connected to a drain pipe, and the same L-shaped top plate is slidably connected between the two inner walls of the wastewater treatment tank, with a receiving component for receiving impurities fixedly installed at the bottom of the L-shaped top plate.

[0011] In one possible design, the receiving component includes a sludge storage box fixedly connected to the bottom of an L-shaped top plate, the top of the sludge storage box being connected to the bottom of the L-shaped top plate, an inclined groove being formed on the inner bottom wall of the sludge storage box, a triangular block being fixedly installed on one side of the sludge storage box, the triangular block cooperating with a clearance groove, and a drain hole being formed on one side of the sewage treatment tank, the inclined groove being connected to the drain hole.

[0012] In one possible design, a sewage discharge assembly is also included, comprising discharge ramp I and discharge ramp III fixedly installed on one side of the sewage treatment tank, the discharge ramp I and discharge ramp III being located below two sewage discharge holes respectively. A discharge ramp II is also fixedly installed on one side of the sewage treatment tank, the discharge ramp II being located below discharge ramp I and discharge ramp III. A sewage discharge pipe is fixedly installed on one side of the sewage treatment tank, the sewage discharge pipe being connected to discharge ramp II.

[0013] In one possible design, a drive assembly is also included, comprising a protective shell fixedly mounted on one side of the wastewater treatment tank, a servo motor fixedly mounted on the inner wall of the protective shell, a drive shaft fixedly mounted on the output shaft of the servo motor, and a slot provided on one side of the drive shaft, the slot engaging with a plug.

[0014] In one possible design, heat dissipation holes are provided on both sides of the protective shell.

[0015] In one possible design, a support frame is fixedly installed at the bottom of the sewage treatment tank, and multiple legs are fixedly installed at the bottom of the support frame. A fixed frame is fixedly installed on the inner wall of the sewage treatment tank, and a support rod is fixedly installed on one side of the fixed frame. One end of the support rod is used to support the side plate of the grille.

[0016] In this application, when in use, sewage enters from the top side of the sewage treatment tank and is filtered by two layers of bar screens and bar screens. Impurities remain on one side of the bar screens. After pretreatment, the sewage is discharged through the drain pipe. By starting the servo motor, the output shaft of the servo motor drives the drive shaft to rotate, the drive shaft drives the insert block to rotate, and then drives the bar screens and bar screens to rotate. At this time, the bar screens are in an inclined state. At the same time, the side plate of the grille drives the side push block to rotate, and the L-shaped top plate located at the top of the side push block begins to move down under the action of gravity. Since the L-shaped top plate is slidably connected to the inside of the sewage treatment tank, the L-shaped top plate drives the sludge storage box and the triangular block to move down. At this time, the triangular block and the sludge storage box move to one side of the grille side plate. Since the grille side plate is in an inclined state, the impurities slide down through the inclined surface of the grille side plate into the inside of the sludge storage box and slide down to one side along the inclined surface of the inclined groove. At this time, the servo motor is started, causing the output shaft of the servo motor to reverse, which can drive the grid side plate to reset. When the grid side plate is tilted, the other grid side plate can work normally. When the grid side plate is reset, one side of the grid side plate will be supported by the support rod to ensure the stability of the grid side plate. When the sludge storage box moves down, the sludge storage box will fall on the top of the fixed frame and be supported by the fixed frame. When the grid side plate is in a vertical state, the side push block will push the L-shaped top plate to move up. The L-shaped top plate will drive the impurities to move up and finally slide down through the sewage discharge hole. It will be discharged into the sewage pipe through the discharge inclined plate I, discharge inclined plate II and discharge inclined plate III for easy collection. When it is necessary to clean the side panel of the grille, the rotating block can be turned with a screwdriver. The rotating block drives the lead screw to rotate, and the lead screw drives the trapezoidal push plate to move up. The trapezoidal push plate no longer resists the trapezoidal sliding plate. Under the tension of the tension spring, the trapezoidal sliding plate moves laterally, and the trapezoidal sliding plate drives the insert block to retract. The insert block is no longer engaged with the slot, and the connection between the trapezoidal sliding plate and the drive shaft can be released. The side panel of the grille can then be removed for cleaning.

[0017] Beneficial effects: This double-layer self-cleaning rotating bar screen cleaning component and sewage treatment pretreatment equipment, by setting rotatable bar screen side plates, can periodically change the state of the bar screen side plates during the sewage filtration process, so that impurities will automatically slide into the sludge storage box under the action of gravity, realizing the self-cleaning of the bar screen, avoiding the drawbacks of traditional bar screens that require frequent manual cleaning, greatly improving the cleaning efficiency and reducing labor costs.

[0018] When one set of bar screens is tilted to clean impurities, the other set of bar screens can remain vertical and work normally, ensuring that the sewage treatment process is uninterrupted, improving the continuity and stability of sewage treatment, and meeting the needs of large-scale sewage treatment.

[0019] When the side panel of the bar screen is reset, one side will be held in place by a support rod, which ensures the stability of the side panel during operation, reduces the occurrence of situations where the cleaning effect is affected by the shaking or displacement of the bar screen, and improves the overall reliability of the equipment.

[0020] By setting up discharge ramp I, discharge ramp II, and discharge ramp III, and designing reasonable drain hole positions, impurities cleaned from the side plate of the grid can be smoothly and orderly discharged into the drain pipe, facilitating collection and treatment, and preventing impurities from accumulating inside the equipment.

[0021] When cleaning or maintenance of the grating side panels is required, the grating side panels can be removed by simply rotating the rotating block, which drives the lead screw to rotate and disconnects the trapezoidal slide plate from the drive shaft. The operation is convenient and quick, greatly shortening maintenance time and improving the maintainability of the equipment. Attached Figure Description

[0022] Figure 1This is a three-dimensional structural schematic diagram of the double-layer self-cleaning rotary bar screen cleaning component and wastewater pretreatment equipment proposed in this invention. Figure 2 This is a three-dimensional structural schematic diagram from a second perspective of the double-layer self-cleaning rotating bar screen cleaning component and wastewater pretreatment equipment proposed in this invention. Figure 3 This is a three-dimensional structural diagram of the wastewater treatment tank in the double-layer self-cleaning rotary bar screen cleaning component and wastewater pretreatment equipment proposed in this invention. Figure 4 This is a three-dimensional structural diagram of the screen side plate filtering impurities in the double-layer self-cleaning rotary bar cleaning component and sewage treatment pretreatment equipment proposed in this invention. Figure 5 This is a three-dimensional structural diagram of the screen side plate tilting impurities in the double-layer self-cleaning rotary screen cleaning component and sewage treatment pretreatment equipment proposed in this invention. Figure 6 This is a three-dimensional structural diagram of the bottom plate and side plate of the double-layer self-cleaning rotary bar screen cleaning component and sewage treatment pretreatment equipment proposed in this invention. Figure 7 This is an exploded view of the pushing trapezoidal plate and sliding trapezoidal plate in the double-layer self-cleaning rotating bar screen cleaning component and sewage treatment pretreatment equipment proposed in this invention.

[0023] In the diagram: 1. Sewage treatment tank; 2. Support frame; 3. Support leg; 4. Drainage pipe; 5. L-shaped top plate; 6. Sewage pipe; 7. Sewage outlet; 8. Discharge ramp I; 9. Discharge ramp II; 10. Discharge ramp III; 11. Support rod; 12. Fixing frame; 13. Side push block; 14. Clearance groove; 15. Servo motor; 16. Heat dissipation hole; 17. Protective shell; 18. Grating plate; 19. Grating side plate; 20. Triangular block; 21. Inclined groove; 22. Sewage storage box; 23. Trapezoidal sliding plate; 24. Insert block; 25. Drive shaft; 26. Tension spring; 27. Rectangular groove I; 28. Rectangular groove II; 29. ​​Circular groove; 30. Rotating block; 31. Lead screw; 32. Trapezoidal push plate; 33. Slot. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] In one embodiment: Refer to Figure 1-7The wastewater pretreatment equipment mainly consists of a double-layer self-cleaning rotary bar screen and a wastewater treatment tank. A support frame 2 is installed at the bottom of the wastewater treatment tank 1, with multiple legs 3 fixed to the bottom of the support frame 2 to stably support the entire equipment. The inner wall of the bottom of the wastewater treatment tank 1 is inclined, with a drain pipe 4 fixed at one end for easy discharge of treated wastewater.

[0026] In the double-layer self-cleaning rotating bar screen assembly, a bar screen 18 is fixedly installed on one bottom side of the bar screen side plate 19, and two side push blocks 13 are symmetrically fixedly installed on one top side. Each side push block 13 has a clearance groove 14 on one side. A rectangular groove I 27 is formed on one side of the bar screen side plate 19, and a connected rectangular groove II 28 is formed on the inner wall of the top of the rectangular groove I 27. A trapezoidal slide plate 23 is slidably connected to the inner wall of the rectangular groove I 27, and two symmetrical tension springs 26 are provided between one side of the trapezoidal slide plate 23 and one side of the inner wall of the rectangular groove I 27. A trapezoidal push plate 32 is slidably connected inside the rectangular groove II 28. The trapezoidal push plate 32 cooperates with the trapezoidal slide plate 23 to push the trapezoidal slide plate 23 to move laterally. A plug block 24 is fixedly installed on one side of the trapezoidal slide plate 23. A circular groove 29 is opened on the top of the grid side plate 19. A rotating block 30 is rotatably connected in the circular groove 29. A screw rod 31 is fixedly installed at the bottom of the rotating block 30. The bottom of the screw rod 31 rotates through the rectangular groove II 28 and threaded through the trapezoidal push plate 32. By rotating the rotating block 30, the screw rod 31 can be driven to rotate, thereby causing the trapezoidal push plate 32 to move upward.

[0027] The inner walls of both sides of the sewage treatment tank 1 are slidably connected to the same L-shaped top plate 5, and a receiving component is fixedly installed at the bottom of the L-shaped top plate 5. The receiving component includes a sludge storage box 22 fixedly connected to the bottom of the L-shaped top plate 5. The top of the sludge storage box 22 is connected to the bottom of the L-shaped top plate 5. An inclined groove 21 is opened on the inner wall of the bottom. A triangular block 20 is fixedly installed on one side. The triangular block 20 is used in conjunction with the clearance groove 14. A sewage discharge hole 7 is opened on one side of the sewage treatment tank 1. The inclined groove 21 is in conjunction with the sewage discharge hole 7 to facilitate the discharge of impurities.

[0028] A sewage discharge assembly is installed on one side of the sewage treatment tank 1, including a discharge ramp I 8 and a discharge ramp III 10 fixedly installed on the side of the sewage treatment tank 1, which are located below the two discharge holes 7 respectively. A discharge ramp II 9 is also fixedly installed on one side of the sewage treatment tank 1. The discharge ramp II 9 is located below the discharge ramp I 8 and the discharge ramp III 10 and is used to collect impurities. A sewage pipe 6 is fixedly installed on one side of the sewage treatment tank 1. The sewage pipe 6 is connected to the discharge ramp II 9 so that the discharged impurities can be collected in a concentrated manner.

[0029] When the equipment is running, sewage enters from the top side of the sewage treatment tank 1 and is filtered through two layers of screen side plates 19 and screen plate 18. Impurities remain on one side of the screen side plate 19, and the pre-treated sewage is discharged through the drain pipe 4. When the servo motor 15 is started, its output shaft drives the drive shaft 25 to rotate. Because the insert 24 is engaged with the slot 33, the drive shaft 25 drives the insert 24 to rotate, which in turn drives the screen side plate 19 and screen plate 18 to rotate, causing the screen side plate 19 to tilt.

[0030] As the side plate 19 rotates, it simultaneously drives the side push block 13 to rotate. The L-shaped top plate 5 located on top of the side push block 13 moves downward under the action of gravity. Since the L-shaped top plate 5 is slidably connected inside the sewage treatment tank 1, it drives the sludge storage box 22 and the triangular block 20 to move downward, causing the triangular block 20 and the sludge storage box 22 to move to one side of the side plate 19. Because the side plate 19 is tilted, impurities slide down its inclined surface into the sludge storage box 22 and slide down to one side along the inclined surface of the inclined groove 21.

[0031] The servo motor 15 is restarted, causing its output shaft to reverse and resetting the bar screen side plates 19. When one set of bar screen side plates 19 is tilted, the other set can work normally, ensuring continuous sewage treatment. When the bar screen side plates 19 are reset, one side is held in place by the support rod 11 to ensure its stability. When the sludge storage box 22 moves down, it falls on top of the fixed frame 12 and is supported by the fixed frame 12. When the bar screen side plates 19 are in a vertical state, the side push block 13 pushes the L-shaped top plate 5 upward, and the L-shaped top plate 5 moves the impurities upward, eventually sliding down through the discharge hole 7 and being discharged into the sewage pipe 6 for collection via the discharge inclined plate I 8, discharge inclined plate II 9, and discharge inclined plate III 10.

[0032] When cleaning the side panel 19 of the grille is required, use a screwdriver to turn the rotating block 30, which drives the lead screw 31 to rotate. The lead screw 31 drives the trapezoidal push plate 32 to move upward. The trapezoidal push plate 32 no longer resists the trapezoidal sliding plate 23. Under the tension of the tension spring 26, the trapezoidal sliding plate 23 moves laterally, causing the insert block 24 to retract, so that the insert block 24 is no longer engaged with the slot 33. The connection between the trapezoidal sliding plate 23 and the drive shaft 25 is released, and the side panel 19 of the grille can be removed for cleaning. Through the above structure and working method, this equipment achieves efficient decontamination and self-cleaning, and has a stable structure, convenient operation, and smooth discharge of impurities, effectively solving the problems existing in traditional grille equipment.

[0033] This application can be used in the field of wastewater treatment, or in other fields applicable to this application.

[0034] In another embodiment: Reference Figure 1-7Wastewater pretreatment equipment is used in the field of wastewater treatment. A drive assembly is set on the other side of the wastewater treatment tank 1, including a protective shell 17 fixedly installed on one side of the wastewater treatment tank 1. A servo motor 15 is fixedly installed on the inner wall of the protective shell 17. The output shaft of the servo motor 15 is fixedly installed on the drive shaft 25. A slot 33 is opened on one side of the drive shaft 25. The slot 33 engages with the plug block 24. Heat dissipation holes 16 are opened on both sides of the protective shell 17 to facilitate heat dissipation of the servo motor 15.

[0035] However, as is well known to those skilled in the art, the working principle and wiring method of the servo motor 15 are conventional means or common knowledge, and will not be described in detail here. Those skilled in the art can make any selection according to their needs or convenience.

[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A double-layer self-cleaning rotary bar screen cleaning assembly, characterized in that, include: The grid side plate (19) has a grid plate (18) fixedly installed at the bottom and two symmetrically arranged side push blocks (13) fixedly installed at the top of the grid side plate (19). Each of the two side push blocks (13) has a clearance groove (14) on one side. A rectangular groove I (27) is provided on one side of the grid side plate (19), and a connected rectangular groove II (28) is provided on the top inner wall of the rectangular groove I (27). A trapezoidal sliding plate (23) is slidably connected to the inner wall of the rectangular groove I (27), and two tension springs (26) are provided between one side of the trapezoidal sliding plate (23) and one side inner wall of the rectangular groove I (27). The rectangular groove II (28) is internally slidably connected to a trapezoidal push plate (32), which cooperates with the trapezoidal slide plate (23); A plug (24) is fixedly installed on one side of the trapezoidal slide plate (23). A circular groove (29) is opened on the top of the grid side plate (19). A rotating block (30) is rotatably connected inside the circular groove (29). A screw rod (31) is fixedly installed at the bottom of the rotating block (30). The bottom of the screw rod (31) extends rotatably into the interior of the rectangular groove II (28) and is threadedly connected to the trapezoidal push plate (32). When the rotating block (30) is rotated, the lead screw (31) drives the trapezoidal push plate (32) to move, thereby pushing the trapezoidal slide plate (23) to move laterally, so that the insert block (24) is retracted or extended, thereby realizing the connection or disassembly of the grid side plate (19).

2. The double-layer self-cleaning rotary bar screen cleaning assembly according to claim 1, characterized in that, The tension spring (26) is symmetrically arranged on one side of the trapezoidal slide plate (23) to provide tension for the trapezoidal slide plate (23) to reset.

3. A wastewater pretreatment device, characterized in that, Includes the double-layer self-cleaning rotating bar screen cleaning assembly as described in claim 1 or 2.

4. The wastewater pretreatment equipment according to claim 3, characterized in that, It also includes a sewage treatment tank (1), the bottom inner wall of the sewage treatment tank (1) is inclined, one end of the sewage treatment tank (1) is fixedly connected to a drain pipe (4), the two inner walls of the sewage treatment tank (1) are slidably connected to the same L-shaped top plate (5), and the bottom of the L-shaped top plate (5) is fixedly installed with a receiving component for receiving impurities.

5. The wastewater pretreatment equipment according to claim 4, characterized in that, The receiving component includes a sludge storage box (22) fixedly connected to the bottom of the L-shaped top plate (5). The top of the sludge storage box (22) is connected to the bottom of the L-shaped top plate (5). An inclined groove (21) is provided on the inner wall of the bottom of the sludge storage box (22). A triangular block (20) is fixedly installed on one side of the sludge storage box (22). The triangular block (20) cooperates with the clearance groove (14). A sewage discharge hole (7) is provided on one side of the sewage treatment tank (1). The inclined groove (21) is connected to the sewage discharge hole (7).

6. The wastewater pretreatment equipment according to claim 4, characterized in that, It also includes a sewage discharge assembly, which includes a discharge ramp I (8) and a discharge ramp III (10) fixedly installed on one side of the sewage treatment tank (1). The discharge ramp I (8) and the discharge ramp III (10) are respectively located below two sewage discharge holes (7). A discharge ramp II (9) is also fixedly installed on one side of the sewage treatment tank (1). The discharge ramp II (9) is located below the discharge ramp I (8) and the discharge ramp III (10). A sewage pipe (6) is fixedly installed on one side of the sewage treatment tank (1). The sewage pipe (6) is connected to the discharge ramp II (9).

7. The wastewater pretreatment equipment according to claim 4, characterized in that, It also includes a drive assembly, which includes a protective shell (17) fixedly installed on one side of the sewage treatment tank (1). A servo motor (15) is fixedly installed on the inner wall of the protective shell (17). An active shaft (25) is fixedly installed on the output shaft of the servo motor (15). A slot (33) is provided on one side of the active shaft (25). The slot (33) engages with the plug (24).

8. The wastewater pretreatment equipment according to claim 7, characterized in that, The protective shell (17) has heat dissipation holes (16) on both sides.

9. The wastewater pretreatment equipment according to claim 4, characterized in that, The bottom of the sewage treatment tank (1) is fixedly installed with a support frame (2), and the bottom of the support frame (2) is fixedly installed with multiple legs (3). The inner wall of the sewage treatment tank (1) is fixedly installed with a fixed frame (12), and a support rod (11) is fixedly installed on one side of the fixed frame (12). One end of the support rod (11) is used to support the side plate of the grid (19).

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