Automatic reset method for underwater movable sub-grating of rotary reverse dredging type bar screen cleaner

Abstract

The application discloses an underwater movable auxiliary fence automatic resetting method for a rotary reverse dredging type bar screen, and an underwater movable auxiliary fence automatic resetting device thereof. The underwater movable auxiliary fence automatic resetting device comprises a front baffle fixed below a main body of the bar screen and an underwater movable auxiliary fence rotationally connected with the front baffle. The upper end of the front baffle is provided with a connecting plate, and the lower end of the underwater movable auxiliary fence is provided with a square tube which is rotationally connected with the connecting plate. When the underwater movable auxiliary fence is not subjected to the force of the rake tooth moving on the main body of the bar screen, the square tube abuts against the connecting plate, and the connecting plate limits the square tube. A limiting plate is fixedly connected to the front baffle and limits the rotation of the square tube. When the underwater movable auxiliary fence abuts against the limiting plate, the side of the underwater movable auxiliary fence close to the connecting plate is inclined, so that the rotation angle of the underwater movable auxiliary fence is prevented from being too large, and meanwhile, the underwater movable auxiliary fence close to the connecting plate can be automatically reset by the torque provided by its own gravity.

Description

TECHNICAL FIELD

[0001] The present application relates to the sewage treatment technical field, specifically is underwater movable vice grid automatic reset method for rotary reverse fishing type grid cleaner. BACKGROUND

[0002] The rotary reverse fishing type grid cleaner is generally applied in urban sewage treatment and is a water treatment equipment capable of continuously and automatically intercepting and removing various shapes of sundries in fluid. The use of the rotary reverse fishing type grid cleaner can reduce the cost of waste residue treatment in the later stage and can also avoid the problem of environmental pollution again. The grid carries the sundries upward from below to above the residue outlet, and the sundries are self-fallen or fallen by water flow impact to the residue outlet and then fall into the conveyor from the residue outlet for discharge.

[0003] Since there is a certain spacing between the adjacent two groups of rake teeth of the rotary reverse fishing type grid cleaner, the sundries in the sewage are easy to flow away with the sewage from the spacing between the adjacent two groups of rake teeth, and therefore the underwater vice grid is usually arranged below the rotary reverse fishing type grid cleaner. To enable the underwater vice grid to connect the adjacent two groups of rake teeth and not to hinder the movement of the rake teeth, the underwater vice grid needs to be arranged to be movable, that is, when the underwater movable vice grid intercepts the underwater sundries, the underwater movable vice grid is rotated under the pushing of the previous group of rake teeth, and after the previous group of rake teeth is separated from the underwater movable vice grid, the underwater movable vice grid needs to be reset to the original position, so that the underwater movable vice grid can connect the next group of rake teeth. At present, the underwater movable vice grid has poor automatic reset effect, and even the underwater movable vice grid has a too large rotation angle, which leads to difficulty in resetting. At this time, the underwater sundries are also easy to flow away with the sewage from the spacing between the underwater movable vice grid and the adjacent two groups of rake teeth. When the underwater movable vice grid fails to reset in time, manual resetting of the underwater movable vice grid will affect the use of the grid cleaner, affect the work efficiency, and increase the operation risk and cost. SUMMARY

[0004] In view of the poor automatic reset effect of the underwater movable vice grid for the rotary reverse fishing type grid cleaner and the problem that the underwater movable vice grid has a too large rotation angle, which leads to difficulty in resetting, the underwater movable vice grid automatic reset method for the rotary reverse fishing type grid cleaner is provided. A limiting plate is fixedly connected to the front baffle, when the underwater movable vice grid abuts against the limiting plate, the side of the underwater movable vice grid close to the connecting plate is inclined, so as to avoid that the underwater movable vice grid has a too large rotation angle, and the underwater movable vice grid close to the connecting plate can be automatically reset by the torque provided by its own gravity.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] The application discloses an automatic resetting method for an underwater movable auxiliary grid of a rotary reverse dredging type bar screen, and is characterized in that the automatic resetting method comprises the following steps: a front baffle is fixed below a main body of the bar screen, and the underwater movable auxiliary grid is rotationally connected with the front baffle; a connecting plate is arranged at an upper end of the front baffle, a square tube is arranged at a lower end of the underwater movable auxiliary grid, and the square tube is rotationally connected with the connecting plate; when the underwater movable auxiliary grid is not subjected to a force of a rake tooth moving on the main body of the bar screen, the square tube abuts against the connecting plate, and the connecting plate limits the square tube; a limiting plate is fixedly connected to the front baffle; when the underwater movable auxiliary grid is rotated to a maximum angle under the action of the rake tooth moving on the main body of the bar screen, the underwater movable auxiliary grid abuts against the limiting plate, and the limiting plate limits the rotation of the underwater movable auxiliary grid; when the underwater movable auxiliary grid abuts against the limiting plate, a side of the underwater movable auxiliary grid close to the connecting plate is inclined.

[0007] A steel ball is arranged in the square tube.

[0008] A rubber plate is fixedly connected to a side of the connecting plate in contact with the square tube; when the underwater movable auxiliary grid is not subjected to the force of the rake tooth moving on the main body of the bar screen, the square tube abuts against the rubber plate.

[0009] The front baffle is rotationally connected with the underwater movable auxiliary grid through a hinge.

[0010] An elastic element is fixedly connected to a position where the limiting plate abuts against the underwater movable auxiliary grid; the elastic element is a compression spring.

[0011] The application has the following beneficial effects:

[0012] The limiting plate is fixedly connected to the front baffle, and when the underwater movable auxiliary grid abuts against the limiting plate, the side of the underwater movable auxiliary grid close to the connecting plate is inclined, so that the rotation angle of the underwater movable auxiliary grid is prevented from being too large, and the underwater movable auxiliary grid close to the connecting plate can be automatically reset by a torque provided by the gravity of the underwater movable auxiliary grid. The square tube adopts a solid structure, or a steel ball or a circular steel material is arranged in the square tube, so that the torque of the solid part or the steel ball / circular steel material of the underwater movable auxiliary grid on the hinge joint of the front baffle and the underwater movable auxiliary grid is increased, and the automatic resetting capability of the underwater movable auxiliary grid is improved. The underwater movable auxiliary grid is provided with the elastic element on the limiting plate, and the underwater movable auxiliary grid can be provided with a pushing force in the resetting direction after the elastic element is deformed and recovered, so that the automatic resetting capability of the underwater movable auxiliary grid is further improved. When the underwater movable auxiliary grid intercepts underwater sundries, the underwater movable auxiliary grid is rotated under the pushing of a previous group of rake teeth, the previous group of rake teeth conveys the sundries on the underwater movable auxiliary grid upwards, the underwater movable auxiliary grid is automatically reset to the original position, and the underwater movable auxiliary grid is connected with a next group of rake teeth, so that the underwater sundries are prevented from flowing away from the spacing between the adjacent two groups of rake teeth along with the sewage, and the dredging capability of the rotary reverse dredging type bar screen is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The application discloses an automatic resetting method for an underwater movable auxiliary grid of a rotary reverse dredging type bar screen, and is characterized in that the automatic resetting method comprises the following steps: a front baffle is fixed below a main body of the bar screen, and the underwater movable auxiliary grid is rotationally connected with the front baffle; a connecting plate is arranged at an upper end of the front baffle, a square tube is arranged at a lower end of the underwater movable auxiliary grid, and the square tube is rotationally connected with the connecting plate; when the underwater movable auxiliary grid is not subjected to a force of a rake tooth moving on the main body of the bar screen, the square tube abuts against the connecting plate, and the connecting plate limits the square tube; a limiting plate is fixedly connected to the front baffle; when the underwater movable auxiliary grid is rotated to a maximum angle under the action of the rake tooth moving on the main body of the bar screen, the underwater movable auxiliary grid abuts against the limiting plate, and the limiting plate limits the rotation of the underwater movable auxiliary grid; when the underwater movable auxiliary grid abuts against the limiting plate, a side of the underwater movable auxiliary grid close to the connecting plate is inclined.Figure 1 .

[0014] Figure 2 This is a schematic diagram of the automatic reset device for the underwater movable auxiliary screen of a rotary reverse-retrieval bar screen according to the present invention. Figure 2 .

[0015] Figure 3 This is a schematic diagram of the solid structure of the square tube of the present invention.

[0016] Figure 4 This is a schematic diagram of a square tube containing a steel ball or a circular steel material.

[0017] In the diagram, 1. Underwater movable auxiliary grid, 11. Square tube, 2. Rubber plate, 3. Front baffle, 31. Connecting plate, 4. Hinge, 5. Limiting plate, 6. Main body of the cleaning machine, 7. Rake teeth. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0019] like Figures 1-2 As shown, the automatic reset device for the underwater movable auxiliary screen of the rotary reverse-retrieval bar screen of the present invention includes a front baffle 3 fixed below the main body 6 of the screen screen and an underwater movable auxiliary screen 1 rotatably connected to the front baffle 3 via a hinge 4. The main body 6 of the screen screen is an existing rotary reverse-retrieval bar screen. Its principle is that the rake teeth 7 are fixed on the chain. Driven by the motor reducer, the rake teeth 7 rotate with the chain in the opposite direction of the water flow, bringing the debris from bottom to top to the top of the slag outlet. Then the debris falls off by gravity or is impacted by the water flow to the slag outlet. A connecting plate 31 is provided at the upper end of the front baffle 3, and a square tube 11 is provided at the lower end of the underwater movable auxiliary screen 1. The square tube 11 is rotatably connected to the connecting plate 31. When the underwater movable auxiliary screen 1 is not subjected to the force of the rake teeth 7 moving on the main body 6 of the screen screen, the square tube 11 abuts against the connecting plate 31, and the connecting plate 31 limits the square tube 11. A rubber plate 2 is fixedly connected to the side of the connecting plate 31 that contacts the square tube 11. When the underwater movable auxiliary grid 1 is not subjected to the force of the moving rake teeth 7 on the main body 6 of the cleaning machine, the square tube 11 abuts against the rubber plate 2. When the underwater movable auxiliary grid 1 rotates to reset by its own weight, it buffers the impact between the square tube 11 and the connecting plate 31, extending the service life of the square tube 11 and the connecting plate 31. A limit plate 5 is fixedly connected to the front baffle 3. When the underwater movable auxiliary grid 1 rotates to its maximum angle under the action of the moving rake teeth 7 on the main body 6 of the cleaning machine, the underwater movable auxiliary grid 1 abuts against the limit plate 5. The limit plate 5 limits the rotation of the underwater movable auxiliary grid 1, preventing the underwater movable auxiliary grid 1 from exceeding the range of automatic reset when rotating. When the underwater movable auxiliary grid 1 abuts against the limit plate 5, the side of the underwater movable auxiliary grid 1 closest to the connecting plate 31 tilts, such as... Figure 2As shown, when the underwater movable auxiliary fence 1 is rotated to the maximum angle under the action of the rake teeth 7 moving on the main body 6 of the cleaner, the underwater movable auxiliary fence 1 can rely on its own gravity to tilt to the side close to the connecting plate 31, as shown in Figure 1 As shown, the underwater movable auxiliary fence 1 returns to the state when the square tube 11 abuts against the rubber plate 2, realizing the automatic resetting of the underwater movable auxiliary fence 1. When the underwater movable auxiliary fence 1 intercepts underwater sundries, the underwater movable auxiliary fence 1 is rotated under the pushing of the previous group of rake teeth 7, the previous group of rake teeth 7 conveys the sundries on the underwater movable auxiliary fence 1 upwards, at this time, the underwater movable auxiliary fence 1 is automatically reset to the original position, and is connected with the next group of rake teeth 7, avoiding the underwater sundries from flowing away with the sewage from the spacing between the adjacent two groups of rake teeth, and further improving the cleaning capacity of the rotary reverse fishing type grille cleaner.

[0020] As shown, Figure 3 The square tube 11 adopts a solid structure, increasing the gravity of the underwater movable auxiliary fence 1, compared with the hollow structure of the square tube 11, the solid structure of the square tube 11 increases the moment of the solid part on the hinge joint of the front baffle 3 and the underwater movable auxiliary fence 1, improving the automatic resetting capacity of the underwater movable auxiliary fence 1. The square tube 11 can realize the solid structure by filling scrap steel or iron chips, recycling the scrap steel or iron chips, and saving costs. As shown, Figure 4 The square tube 11 is provided with a steel ball or a circular steel material, when the underwater movable auxiliary fence 1 abuts against the limiting plate 5, the side of the underwater movable auxiliary fence 1 close to the connecting plate 31 is inclined, the steel ball or the circular steel material rolls or stays close to the connecting plate 31 in the square tube 11, increasing the moment of the steel ball or the circular steel material on the hinge joint of the front baffle 3 and the underwater movable auxiliary fence 1, improving the automatic resetting capacity of the underwater movable auxiliary fence 1. In addition, the limiting plate 5 is fixedly connected with an elastic element at the abutting position of the underwater movable auxiliary fence 1, the elastic element is a compression spring, when the underwater movable auxiliary fence 1 abuts against the limiting plate 5, the elastic element is deformed under the extrusion force of the underwater movable auxiliary fence 1, when the underwater movable auxiliary fence 1 is automatically reset, the deformed elastic element can generate a pushing force to the underwater movable auxiliary fence 1 in the resetting direction of the underwater movable auxiliary fence 1, improving the automatic resetting capacity of the underwater movable auxiliary fence 1.

[0021] The examples are the preferred embodiments of the present application, but the present application is not limited to the above embodiments, any obvious improvement, replacement or modification made by those skilled in the art without departing from the essential content of the present application shall fall within the protection scope of the present application.

Claims

1. A method for automatic reset of underwater movable auxiliary bar of rotary reverse dredging type bar screen, characterized in that: The utility model relates to a front baffle (3) fixed below the main body (6) of the cleaner, an underwater movable secondary fence (1) rotatably connected with the front baffle (3); the upper end of the front baffle (3) is provided with a connecting plate (31), the lower end of the underwater movable secondary fence (1) is provided with a square tube (11), and the square tube (11) is rotatably connected with the connecting plate (31); when the underwater movable secondary fence (1) is not subjected to the force of the rake tooth (7) moving on the main body (6) of the cleaner, the square tube (11) abuts against the connecting plate (31), and the connecting plate (31) limits the square tube (11); the front baffle (3) is fixedly connected with a limiting plate (5); when the underwater movable secondary fence (1) is rotated to the maximum angle under the action of the rake tooth (7) moving on the main body (6) of the cleaner, the underwater movable secondary fence (1) abuts against the limiting plate (5), and the limiting plate (5) limits the rotation of the underwater movable secondary fence (1); when the underwater movable secondary fence (1) abuts against the limiting plate (5), the side of the underwater movable secondary fence (1) close to the connecting plate (31) is inclined; A steel ball is arranged in the square tube (11); The side of the connecting plate (31) in contact with the square tube (11) is fixedly connected with a rubber plate (2); when the underwater movable secondary fence (1) is not subjected to the force of the rake tooth (7) moving on the main body (6) of the cleaner, the square tube (11) abuts against the rubber plate (2); The front baffle (3) and the underwater movable secondary fence (1) are rotatably connected through a hinge (4); An elastic member is fixedly connected to the abutting position of the limiting plate (5) and the underwater movable secondary fence (1); The elastic member is a compression spring.

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