Screw conveyer

Abstract

The utility model discloses a spiral conveyer which comprises a conveying cylinder, a feeding box is arranged at the top of the conveying cylinder, a feeding cavity and a cleaning cavity which are communicated are formed in the feeding box, a first supporting frame is arranged in the feeding cavity and is in sliding connection with the inner wall of the feeding box, a first filter screen is installed in the first supporting frame, and a second filter screen is installed in the first filter screen. A first rack is arranged at the bottom of one side of the first supporting frame, a second supporting frame is arranged in the cleaning cavity and slidably connected with the inner wall of the feeding box, a second filter screen is installed in the second supporting frame, a second rack is arranged at the top of one side of the second supporting frame, a rotating shaft is rotatably installed in the feeding box, and a gear is arranged on the rotating shaft. The gear is meshed with the first rack and the second rack, and one end of the rotating shaft extends out of the feeding box and is connected with a handle. The spiral conveyor is reasonable in structure, the filter screen can be cleaned without shutdown, and the influence on the production efficiency is avoided.

Description

Technical Field

[0001] The utility model relates to a screw conveyor. Background Art

[0002] A screw conveyor is a machine that uses a motor to drive a screw to rotate and push materials to achieve the purpose of conveying. It can convey horizontally, obliquely or vertically, and has the advantages of simple structure, small cross-sectional area, good sealing, convenient operation, easy maintenance, and convenient for enclosed transportation. The screw conveyor is divided into two types in the conveying form: shafted screw conveyor and shaftless screw conveyor, and is divided into U-shaped screw conveyor and tubular screw conveyor in terms of appearance. The shafted screw conveyor is suitable for non-viscous dry powder materials and small particle materials (such as cement, fly ash, lime, grain, etc.), while the shaftless screw conveyor is suitable for conveying viscous and easy-to-entangle materials (such as sludge, biomass, garbage, etc.). The working principle of the screw conveyor is that the rotating screw blades push the materials to carry out screw conveyor conveying. The forces that prevent the materials from rotating with the screw conveyor blades are the self-weight of the materials and the frictional resistance of the screw conveyor casing to the materials. The screw blades are welded on the rotating shaft of the screw conveyor, and the surface types of the blades are solid surface type, belt type surface type, blade surface type, etc. according to different conveyed materials.

[0003] The patent number 2020200283124 discloses a screw conveyor convenient for cleaning, which includes a crushing cylinder, and a filter screen is transversely arranged at the lower opening of the crushing cylinder. By setting the filter screen, the materials are screened by the filter screen, and the materials with appropriate size will enter the screw conveyor for conveying, effectively avoiding the wear of the conveying cylinder and the screw blades caused by too large material size, and improving the conveying efficiency. However, the following problems exist in the use of this solution: when the filter screen is blocked during the working process of the screw conveyor, it is necessary to stop the machine to clean the filter screen, which directly affects the production efficiency. Therefore, corresponding technical solutions need to be designed to solve the existing technical problems. Summary of the Invention

[0004] The purpose of the utility model is to provide a screw conveyor with reasonable structure, which can clean the filter screen without stopping the machine and avoid affecting the production efficiency.

[0005] To achieve the above object, the technical solution of the present utility model is to design a screw conveyor, including a conveying cylinder, and a feed inlet is provided at the top of one end of the conveying cylinder; a feeding box is provided on the top of the conveying cylinder, an upper feeding cavity and a cleaning cavity are arranged inside the feeding box, and a feeding port communicating with the upper feeding cavity is provided at the top of the feeding box. The upper feeding cavity communicates with the feed inlet, and a first support frame is arranged inside the upper feeding cavity. The first support frame is slidably connected to the inner wall of the feeding box. A first filter screen is installed inside the first support frame, and a first rack is provided at the bottom of one side of the first support frame. The cleaning cavity communicates with the upper feeding cavity, and a second support frame located below the first support frame is arranged inside the cleaning cavity. The second support frame is slidably connected to the inner wall of the feeding box. A second filter screen is installed inside the second support frame, and a second rack is provided at the top of one side of the second support frame. A rotating shaft is rotatably installed inside the feeding box, and a gear is arranged on the rotating shaft. The gear is located between the first rack and the second rack, and the gear meshes with the first rack and the second rack respectively. One end of the rotating shaft extends to the outside of the feeding box and is connected with a handle.

[0006] Preferably, a cleaning port corresponding to the cleaning cavity is provided at the top of the feeding box, a first door plate that can be opened is arranged at the cleaning port, a slag discharge port corresponding to the cleaning cavity is provided at the side of the feeding box, and a second door plate that can be opened is arranged at the slag discharge port.

[0007] Preferably, a baffle plate is arranged between the upper feeding cavity and the cleaning cavity, and the baffle plate is located below the second support frame.

[0008] Preferably, a slag guiding plate is arranged inside the cleaning cavity, the slag guiding plate is inclined, the high end of the slag guiding plate is connected to the baffle plate, and the low end of the slag guiding plate is located below the slag discharge port.

[0009] Preferably, the part of the rotating shaft located outside the feeding box is provided with an external thread, and a locking nut is connected to the external thread.

[0010] Preferably, a feeding hopper corresponding to the feeding port is provided at the top of the feeding box.

[0011] Preferably, a spiral blade is arranged inside the conveying cylinder, and a driving motor drivingly connected to the spiral blade is arranged at one end of the conveying cylinder.

[0012] The advantages and beneficial effects of the present utility model are as follows: a screw conveyor is provided, with a reasonable structure, and the filter screen can be cleaned without stopping the machine, avoiding affecting the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the present utility model.

[0014] Figure 2 isFigure 1 Enlarged view of part A.

[0015] Figure 3 It is a schematic diagram of the internal structure of the loading box in the present utility model. Specific embodiments

[0016] The following combines the drawings and embodiments to further describe the specific embodiments of the present utility model. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model and cannot be used to limit the protection scope of the present utility model.

[0017] The technical solution specifically implemented in the present utility model is as follows:

[0018] As Figure 1 、 Figure 2 and Figure 3 shown, a screw conveyor includes a conveying cylinder 1, and a feed inlet is provided at the top of one end of the conveying cylinder 1; a loading box 2 is provided on the top of the conveying cylinder 1, and a loading cavity 3 and a cleaning cavity 4 are provided inside the loading box 2, and a loading opening communicating with the loading cavity 3 is provided on the top of the loading box 2. The loading cavity 3 communicates with the feed inlet, and a first support frame 5 is provided inside the loading cavity 3. The first support frame 5 is slidably connected to the inner wall of the loading box. A first filter screen is installed inside the first support frame 5, and a first rack 6 is provided at the bottom of one side of the first support frame 5. The cleaning cavity 4 communicates with the loading cavity 3, and a second support frame 7 located below the first support frame 5 is provided inside the cleaning cavity 4. The second support frame 7 is slidably connected to the inner wall of the loading box. A second filter screen is installed inside the second support frame 7, and a second rack 8 is provided at the top of one side of the second support frame 7. A rotating shaft 9 is rotatably installed inside the loading box 2, and a gear 10 is provided on the rotating shaft 9. The gear 10 is located between the first rack 6 and the second rack 8, and the gear 10 is respectively engaged with the first rack 6 and the second rack 8. One end of the rotating shaft 9 extends to the outside of the loading box 2 and is connected to a handle 11.

[0019] By adopting the above solution, when the screw conveyor of the present utility model is in use: materials enter the feeding cavity 3 of the feeding box 2 from the feeding port, and then the materials pass through the first filter screen installed in the first support frame 5 and enter the conveying cylinder 1 from the feeding port. When the first filter screen is blocked and affects the feeding efficiency, the handle 11 can be rotated to drive the rotating shaft 9 and the gear 10 to rotate. The gear 10 drives the first support frame 5 and the second support frame 7 to translate through meshing with the first rack 6 and the second rack 8, so that the first support frame 5 drives the first filter screen to move from the feeding cavity 3 to the cleaning cavity 4, and the second support frame 7 drives the second filter screen to move from the cleaning cavity 4 to the feeding cavity 3. At this time, the second filter screen will screen the materials entering the feeding cavity 3, and the first filter screen in the cleaning cavity 4 can be cleaned, so as to achieve the purpose of cleaning the filter screen without stopping the machine and avoid affecting the production efficiency.

[0020] Further, a cleaning port 12 corresponding to the cleaning cavity 4 is provided at the top of the feeding box 2, a first door panel 13 that can be opened is provided at the cleaning port 12, a slag discharge port 14 corresponding to the cleaning cavity 4 is provided at the side of the feeding box 2, and a second door panel 15 that can be opened is provided at the slag discharge port 14. By adopting the above solution, it is convenient for the staff to clean the filter screen in the cleaning cavity 4 after opening the first door panel 13, and the impurities cleaned from the filter screen can be taken out by the staff after opening the second door panel 15.

[0021] Further, a baffle plate 16 is provided between the feeding cavity 3 and the cleaning cavity 4, and the baffle plate 16 is located below the second support frame 7. By adopting the above solution, the baffle plate 16 can block the materials from entering the cleaning cavity 4 from the feeding cavity 3.

[0022] Further, a slag guiding plate 17 is provided inside the cleaning cavity 4, the slag guiding plate 17 is inclined, the high end of the slag guiding plate 17 is connected to the baffle plate 16, and the low end of the slag guiding plate 17 is located below the slag discharge port 14. By adopting the above solution, the impurities cleaned from the filter screen can slide to the slag discharge port 14 through the slag guiding plate 17.

[0023] Further, the part of the rotating shaft 9 located outside the feeding box 2 is provided with an external thread, and a locking nut 18 is connected to the external thread. By adopting the above solution, the locking nut 18 can be tightened so that the locking nut 18 abuts against the outer wall of the feeding box 2 to prevent the rotating shaft 9 from rotating by itself due to external factors; when the rotating shaft 9 needs to be rotated, the locking nut 18 can be loosened in advance.

[0024] Further, a feeding hopper 19 corresponding to the feeding port is provided at the top of the feeding box 2.

[0025] Further, a spiral blade is provided inside the conveying cylinder 1, and a driving motor 20 drivingly connected to the spiral blade is provided at one end of the conveying cylinder 1.

[0026] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A screw conveyor, comprising a conveying cylinder, wherein a feed inlet is provided at the top of one end of the conveying cylinder, characterized in that, A feeding box is provided at the top of the conveying cylinder. A feeding cavity and a cleaning cavity are arranged inside the feeding box. A feeding port communicating with the feeding cavity is provided at the top of the feeding box. The feeding cavity communicates with the feeding port. A first support frame is arranged inside the feeding cavity. The first support frame is slidably connected to the inner wall of the feeding box. A first filter screen is installed inside the first support frame. A first rack is provided at the bottom of one side of the first support frame. The cleaning cavity communicates with the feeding cavity. A second support frame located below the first support frame is arranged inside the cleaning cavity. The second support frame is slidably connected to the inner wall of the feeding box. A second filter screen is installed inside the second support frame. A second rack is provided at the top of one side of the second support frame. A rotating shaft is rotatably installed inside the feeding box. A gear is arranged on the rotating shaft. The gear is located between the first rack and the second rack and meshes with the first rack and the second rack respectively. One end of the rotating shaft extends to the outside of the feeding box and is connected with a handle.

2. The screw conveyor according to claim 1, characterized in that, A cleaning port corresponding to the cleaning cavity is provided at the top of the feeding box. A first door plate that can be opened is arranged at the cleaning port. A slag discharge port corresponding to the cleaning cavity is provided at the side of the feeding box. A second door plate that can be opened is arranged at the slag discharge port.

3. The screw conveyor according to claim 1, characterized in that, A baffle plate is arranged between the feeding cavity and the cleaning cavity. The baffle plate is located below the second support frame.

4. The screw conveyor according to claim 3, characterized in that, A slag guiding plate is arranged inside the cleaning cavity. The slag guiding plate is inclined. The high end of the slag guiding plate is connected to the baffle plate. The low end of the slag guiding plate is located below the slag discharge port.

5. The screw conveyor according to claim 1, characterized in that, The part of the rotating shaft located outside the feeding box is provided with an external thread. A locking nut is connected to the external thread.

6. The screw conveyor according to claim 1, wherein A feeding hopper corresponding to the feeding port is provided at the top of the feeding box.

7. The screw conveyor according to claim 1, characterized in that, A spiral blade is arranged inside the conveying cylinder. A driving motor in transmission connection with the spiral blade is arranged at one end of the conveying cylinder.

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