Combined type spiral conveyor matched with coarse screen

Abstract

The utility model provides a spiral conveyer matched with a combined coarse screen, which comprises a coarse screen and a spiral conveyer, the coarse screen is arranged at the upper part of a sewage channel, and the lower part of the coarse screen extends into the sewage channel; the screw conveyer is mounted at the upper part of the sewage channel, and a feeding hole of the screw conveyer is positioned below a discharging hole of the coarse screen; the spiral conveyor comprises a conveying groove, a second driving motor, a spiral body and a U-shaped inner lining plate. The coarse screen and the spiral conveyor are combined, so that integrated operation of preliminary filtering and conveying of materials is achieved, a spiral body adopted by the spiral conveyor is of a structure without a central shaft and is not prone to winding, the U-shaped lining plate is arranged in the conveying groove and can be rapidly detached and replaced after being abraded, the service life of equipment is prolonged, and the cost is reduced. And the drainage pipe is arranged on the lower portion of the conveying groove, water squeezed out when the solid waste is conveyed can be drained, and therefore the situation that sewage is drained from an outlet of the conveying groove is reduced.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a combined coarse screen with a screw conveyor. Background Technology

[0002] With the development of the national economy and the improvement of people's living standards, the amount of sewage generated daily is also constantly increasing. In order to protect natural resources such as rivers and lakes, sewage needs to be purified in sewage treatment plants before being discharged. Solid waste usually floats on the surface of domestic or industrial sewage. This solid waste easily accumulates on filters, pumps, and other parts, affecting the sewage treatment process. Therefore, before sewage treatment, a coarse screen is used to remove the solid waste from the sewage. Due to limitations in equipment installation space, the discharge port of the coarse screen usually cannot be directly connected to the solid waste collection bin. For example, Chinese Patent Application No. 202322167647.0 discloses a reliable sewage treatment coarse screen, including a frame, drive unit, main drive shaft, driven shaft, two sets of drive chains, and a coarse screen. This device uses a screw conveyor to collect the solid waste removed by the coarse screen and discharge it from the discharge port, thus successfully collecting the solid waste. However, the existing screw conveyors used in conjunction with this device have the following problems during use: firstly, the removed solid waste... Solid waste is mostly flocculent and easily gets tangled on the conveyor shaft, reducing conveying efficiency. Secondly, the conveyor shaft is prone to friction with the inner wall of the conveyor, and the scratches on the inner wall are difficult to repair. Furthermore, solid waste contains a large amount of sewage, which flows out of the screw conveyor outlet after being squeezed during conveying, increasing the cost of subsequent centralized treatment. Moreover, sewage flowing down from the discharge port can easily pollute the surrounding environment. Therefore, a combined coarse screen and screw conveyor is needed. By combining the coarse screen and the screw conveyor, the initial filtration and conveying of materials are integrated, improving work efficiency and reducing equipment footprint. In addition, the screw conveyor uses a screw without a central shaft to reduce the probability of solid waste entanglement. The addition of a replaceable liner and a drain outlet solves the problems of conveyor trough wear and excessive sewage carried by solid waste. Utility Model Content

[0003] To address the aforementioned issues, this invention proposes a combined coarse screen paired with a screw conveyor. By integrating the coarse screen with the screw conveyor, it achieves integrated operation of preliminary filtration and conveying of materials, improving work efficiency and reducing equipment footprint. Furthermore, the screw conveyor utilizes a shaftless screw to reduce the probability of solid waste entanglement, and incorporates a replaceable liner and drainage outlets to solve the problems of conveyor trough wear and excessive wastewater carried by solid waste.

[0004] This utility model is achieved through the following technical solution:

[0005] This utility model proposes a combined coarse screen and screw conveyor, including a coarse screen and a screw conveyor. The coarse screen is installed on the upper part of a sewage channel, and its lower part extends into the sewage channel. The screw conveyor is installed on the upper part of the sewage channel, and its inlet is located below the outlet of the coarse screen. The screw conveyor includes a conveying trough, a second drive motor, a screw body, and a U-shaped inner liner. The conveying trough is closed at both ends, and the screw body is installed in the conveying trough. The screw body is spiral-shaped and hollow in the middle. A drive shaft is provided in the conveying trough. One end of the drive shaft is connected to the second drive motor through a reducer, and the other end of the drive shaft is connected to the screw body. A bearing is provided between the middle of the drive shaft and the conveying trough. The U-shaped inner liner is installed inside the conveying trough, and the outer wall of the U-shaped inner liner is tightly attached to the inner wall of the conveying trough.

[0006] Furthermore, the conveying trough has a clamping plate on the upper part of the U-shaped inner liner plate, the upper part of the clamping plate is connected to the conveying trough by bolts, and the lower part of the clamping plate is pressed against the upper part and inner side of the U-shaped inner liner plate.

[0007] Furthermore, the helical body is connected to the power shaft via a flange.

[0008] Furthermore, the lower part of the conveying trough is provided with a drain pipe, the lower part of the conveying trough is connected to the drain pipe, and a stepped hole is provided at the connection between the conveying trough and the drain pipe. The inner wall of the stepped hole is provided with threads, a filter plate is provided in the stepped hole, and the U-shaped inner liner is provided with through holes at corresponding positions.

[0009] Furthermore, the conveying trough has an angle of 5° to 10° with the horizontal plane, and the feed side of the conveying trough is lower than the discharge side of the conveying trough.

[0010] Furthermore, the coarse screen includes a frame body, screen bars, a first drive motor, a toothed rake, and a chain. The screen bars are installed on the lower part of the frame body. The frame body is provided with sprockets on both the upper and lower parts. The chain is installed between the sprockets. The two ends of the toothed rake are respectively connected to the chain. The toothed rake moves between the screen bars. The first drive motor is installed on the upper part of the frame body and is connected to the sprockets on the upper part of the frame body through a synchronous belt or a transmission chain.

[0011] The beneficial effects of this utility model are as follows: By combining the coarse screen with the screw conveyor, the initial filtration and conveying of materials are integrated, improving work efficiency and reducing equipment footprint. The screw conveyor uses a screw body without a central shaft, which is not easy to get tangled. The conveying trough is equipped with a U-shaped inner liner plate, which can be quickly removed and replaced after wear, improving the service life of the equipment and reducing maintenance difficulty. The bottom of the conveying trough is equipped with a drain pipe, which can drain the water squeezed out during solid waste transportation, thereby reducing the discharge of sewage from the outlet of the conveying trough. This solves the problems of high water content in solid waste treatment increasing treatment costs and excessive sewage easily dirtying the environment around the discharge port. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the coarse grid of this utility model;

[0014] Figure 3 This is a schematic diagram of the screw conveyor of this utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the U-shaped inner lining plate of this utility model;

[0016] Figure 5 This is a schematic diagram of the structure of the filter plate of this utility model;

[0017] Figure 6 This is a schematic diagram of the internal structure of the screw conveyor of this utility model;

[0018] Figure 7 This is a schematic diagram of the structure of the spiral of this utility model;

[0019] In the diagram: 1-coarse screen, 2-screw conveyor, 11-frame body, 12-screen bar, 13-first drive motor, 14-toothed rake, 15-chain, 16-sprocket, 21-conveyor trough, 22-second drive motor, 23-spiral body, 24-U-shaped inner liner, 25-clamping plate, 26-drive shaft, 27-flange, 28-drain pipe, 29-filter plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Throughout the description, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" and "second" may explicitly or implicitly include at least one of the stated features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0023] like Figures 1 to 7 As shown, an embodiment of this utility model provides a combined coarse screen with a screw conveyor, including a coarse screen 1 and a screw conveyor 2. The coarse screen 1 is installed on the upper part of a sewage channel, and the lower part of the coarse screen 1 extends into the sewage channel. The screw conveyor 2 is installed on the upper part of the sewage channel, and the inlet of the screw conveyor 2 is located below the outlet of the coarse screen 1. The screw conveyor 2 includes a conveying trough 21, a second drive motor 22, a screw body 23, and a U-shaped inner liner 24. The two ends of the conveying trough 21 are closed. The screw body 23 is installed in the conveying trough 21. The screw body 23 is spiral in shape and hollow in the middle. A power shaft 26 is provided in the conveying trough 21. One end of the power shaft 26 is connected to the second drive motor 22 through a reducer, and the other end of the power shaft 26 is connected to the screw body 23. A bearing is provided between the middle of the power shaft 26 and the conveying trough 21. The U-shaped inner liner 24 is installed inside the conveying trough 21, and the outer wall of the U-shaped inner liner 24 is tightly attached to the inner wall of the conveying trough 21.

[0024] The principle of the coarse screen 1 is the same as that of existing commercially available coarse screen equipment. During sewage treatment, the coarse screen 1 blocks solid waste in the sewage through the screen bars 12. The first drive motor 13 drives the chain 15, which in turn causes the rake 14 to be continuously lifted, thereby hooking the solid waste attached to the screen bars 12 and lifting it continuously, thus cleaning the screen bars 12 and collecting the solid waste. After being lifted, the solid waste falls from the frame body 11 into the feed inlet of the conveying trough 21. Driven by the second drive motor 22, the spiral body 23 rotates continuously, thereby giving the solid waste an axial thrust and pushing the solid waste towards the discharge port. The discharge port of the conveying trough 21 is located above the waste collection device, and the solid waste is collected by the waste collection device and then uniformly processed.

[0025] When the screw conveyor 2 is running, the screw 23 will come into contact with the U-shaped inner liner 24 due to gravity. The U-shaped inner liner 24 is made of a material that is softer than the screw 23, which can reduce the wear of the screw 23 and prevent the screw 23 from contacting the conveying trough 21, thus protecting the conveying trough 21. When the U-shaped inner liner 24 needs to be replaced, the screw 23 can be separated from the power shaft 26, and then the clamp 25 can be loosened to remove the U-shaped inner liner 24 for replacement.

[0026] Preferably, the conveying trough 21 is provided with a clamping plate 25 on the upper part of the U-shaped inner liner plate 24. The upper part of the clamping plate 25 is connected to the conveying trough 21 by bolts, and the lower part of the clamping plate 25 presses against the upper part and inner side of the U-shaped inner liner plate 24. After tightening the bolts, the clamping plate 25 can apply pressure to the upper part and inner side of the U-shaped inner liner plate 24, so that the U-shaped inner liner plate 24 is stably fixed in the conveying trough 21, preventing the U-shaped inner liner plate 24 from loosening when the spiral body 23 rotates, and ensuring the stable operation of the equipment.

[0027] Preferably, the spirochete 23 is connected to the drive shaft 26 via a flange 27. When replacing the U-shaped inner liner 24, the flange 27 can be loosened to remove the spirochete 23 from the conveying trough 21.

[0028] Preferably, the lower part of the conveying trough 21 is provided with a drain pipe 28, and the lower part of the conveying trough 21 is connected to the drain pipe 28. A stepped hole is provided at the connection between the conveying trough 21 and the drain pipe 28. The inner wall of the stepped hole is provided with threads, and a filter plate 29 is provided in the stepped hole. The U-shaped inner liner 24 has through holes at corresponding positions. Since the spiral 23 will exert a thrust on the solid waste after rotation, some of the water in the solid waste will be squeezed out under the action of the thrust. This part of the sewage can flow into the drain pipe 28 through the filter plate 29, thereby reducing the amount of sewage in the conveying trough 21 and avoiding excessive sewage from affecting subsequent waste treatment. The filter plate 29 can prevent solid waste from entering the drain pipe 28 and prevent the drain pipe 28 from being blocked.

[0029] Preferably, the conveying trough 21 has an angle of 5° to 10° with the horizontal plane, and the feed side of the conveying trough 21 is lower than the discharge side of the conveying trough 21, so that after the sewage is squeezed out, it can be concentrated on the feed side of the conveying trough 21 under the action of gravity and discharged through the drain pipe 28, avoiding excessive sewage from affecting subsequent waste treatment.

[0030] Preferably, the coarse screen 1 includes a frame body 11, screen bars 12, a first drive motor 13, a toothed rake 14, and a chain 15. The screen bars 12 are installed at the lower part of the frame body 11. The frame body 11 is provided with sprockets 16 at both the upper and lower parts. The chain 15 is installed between the sprockets 16. The two ends of the toothed rake 14 are connected to the chain 15 respectively. The toothed rake 14 moves between the screen bars 12. The first drive motor 13 is installed at the upper part of the frame body 11 and is connected to the sprockets 16 at the upper part of the frame body 11 through a synchronous belt or a transmission chain. During sewage treatment, the coarse screen 1 blocks solid waste in the sewage through the screen bars 12. The first drive motor 13 drives the chain 15, which causes the toothed rake 14 to be continuously lifted, thereby hooking the solid waste attached to the screen bars 12 and lifting it continuously, thus cleaning the screen bars 12 and collecting the solid waste.

[0031] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. A combined coarse bar screen paired with a screw conveyor, characterized in that, The system includes a coarse screen (1) and a screw conveyor (2). The coarse screen (1) is installed on the upper part of the sewage channel, and the lower part of the coarse screen (1) extends into the sewage channel. The screw conveyor (2) is installed on the upper part of the sewage channel, and the inlet of the screw conveyor (2) is located below the outlet of the coarse screen (1). The screw conveyor (2) includes a conveying trough (21), a second drive motor (22), a screw (23), and a U-shaped inner liner (24). The conveying trough (21) is closed at both ends, and the screw (23) is installed on the conveying trough. In the trough (21), the spiral body (23) is spiral-shaped and hollow in the middle. The conveying trough (21) is provided with a power shaft (26). One end of the power shaft (26) is connected to the second drive motor (22) through a reducer, and the other end of the power shaft (26) is connected to the spiral body (23). A bearing is provided between the middle of the power shaft (26) and the conveying trough (21). The U-shaped inner liner (24) is installed inside the conveying trough (21), and the outer wall of the U-shaped inner liner (24) is tightly attached to the inner wall of the conveying trough (21).

2. The combined coarse bar screen and screw conveyor according to claim 1, characterized in that, The conveying trough (21) has a clamping plate (25) on the upper part of the U-shaped inner liner (24). The upper part of the clamping plate (25) is connected to the conveying trough (21) by bolts, and the lower part of the clamping plate (25) is pressed against the upper part and inner side of the U-shaped inner liner (24).

3. The combined coarse bar screen and screw conveyor according to claim 1, characterized in that, The spiral (23) is connected to the power shaft (26) via a flange (27).

4. The combined coarse bar screen and screw conveyor according to claim 1, characterized in that, The lower part of the conveying trough (21) is provided with a drain pipe (28), the lower part of the conveying trough (21) is connected to the drain pipe (28), and a stepped hole is provided at the connection between the conveying trough (21) and the drain pipe (28). The inner wall of the stepped hole is provided with a thread, and a filter plate (29) is provided in the stepped hole. The U-shaped inner liner plate (24) has a through hole at the corresponding position.

5. A combined coarse bar screen with a screw conveyor according to claim 4, characterized in that, The conveying trough (21) has an angle of 5° to 10° with the horizontal plane, and the feed side of the conveying trough (21) is lower than the discharge side of the conveying trough (21).

6. The combined coarse bar screen and screw conveyor according to claim 1, characterized in that, The coarse grid (1) includes a frame body (11), grid bars (12), a first drive motor (13), a toothed rake (14), and a chain (15). The grid bars (12) are installed on the lower part of the frame body (11). The frame body (11) is provided with sprockets (16) on both the upper and lower parts. The chain (15) is installed between the sprockets (16). The two ends of the toothed rake (14) are respectively connected to the chain (15). The toothed rake (14) moves between the grid bars (12). The first drive motor (13) is installed on the upper part of the frame body (11), and the first drive motor (13) is connected to the sprockets (16) on the upper part of the frame body (11) through a synchronous belt or a transmission chain.

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