Screw feeder

Abstract

The utility model provides a spiral feeder which comprises a driving motor, a bearing box, a stock bin and a spiral conveying shaft arranged in the stock bin. The bearing box is fixed on one side of the stock bin; a connecting shaft section of the spiral conveying shaft penetrates through the bearing box and is connected with a bearing pack of the bearing box, the driving motor is in driving connection with the spiral conveying shaft, a connecting hole for the connecting shaft section to penetrate through is formed in the side, facing the stock bin, of the bearing box, a sealing seat is arranged on the inner wall of the connecting hole, and an oil seal is assembled on the connecting shaft section. The periphery of the oil seal is sleeved with an oil seal sleeve, the oil seal sleeve is assembled on the sealing seat, a sealing ring is arranged between the oil seal sleeve and the sealing seat, and an assembling gap between the oil seal sleeve and the sealing seat is sealed through the sealing ring. Therefore, rotation of the spiral transmission shaft is not affected, a good sealing effect is achieved, blocking caused by dust penetration is effectively avoided, frequent maintenance is not needed, maintenance cost is reduced, and production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of material conveying, specifically to a screw feeder. Background Technology

[0002] The screw feeder is a new generation product that integrates stable flow conveying, weighing and metering and quantitative control of powder materials; it is suitable for continuous metering and batching of powder materials in various industrial production environments, and is suitable for horizontal or inclined conveying of powder, granular and small block materials.

[0003] The core component of a screw feeder is the screw conveyor shaft, which consists of helical blades mounted on a shaft. As the screw conveyor shaft rotates, the blades drive the material transport. The screw conveyor shaft is typically mounted on a bearing housing, and this connection ensures stable and reliable assembly. However, dust can easily seep into the gap between the bearing housing and the screw conveyor shaft, causing transmission obstruction. To ensure normal operation, this necessitates shortening maintenance intervals, resulting in high maintenance costs and reduced production efficiency. Utility Model Content

[0004] Therefore, in order to solve the above problems, this utility model provides a screw feeder.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A screw feeder includes a drive motor, a bearing housing, a hopper, and a screw conveyor shaft disposed within the hopper. The bearing housing is fixed to one side of the hopper. A connecting shaft section of the screw conveyor shaft passes through the bearing housing and is connected to the bearing assembly of the bearing housing. The drive motor drives the connecting screw conveyor shaft. The bearing housing has a connecting hole on the side facing the hopper for the connecting shaft section to pass through. A sealing seat is provided on the inner wall of the connecting hole. An oil seal is mounted on the connecting shaft section. An oil seal sleeve is fitted around the outer periphery of the oil seal. The oil seal sleeve is fitted onto the sealing seat, and a sealing ring is provided between the oil seal sleeve and the sealing seat to seal the assembly gap between the oil seal sleeve and the sealing seat.

[0007] Furthermore, there are two spiral conveyor shafts arranged side by side in the hopper. The bearing housing contains two sets of bearings. The connecting shaft sections of the two spiral conveyor shafts are both inserted into the bearing housing and connected to the two sets of bearings respectively.

[0008] Furthermore, the drive motor drives the two spiral transmission shafts to rotate in opposite directions.

[0009] Furthermore, gears are respectively fitted onto the two spiral conveyor shafts, and the gears on the two spiral conveyor shafts mesh with each other; the drive end of the drive motor is connected to one of the spiral conveyor shafts, thereby driving the two spiral conveyor shafts to rotate in opposite directions.

[0010] Furthermore, the end of the connecting shaft section of the spiral conveyor shaft extends out from the side of the bearing housing away from the hopper, and the drive motor drives the end of the connecting shaft section connected to the spiral conveyor shaft.

[0011] Furthermore, it also includes a speed reducer, the drive end of the drive motor is connected to the speed reducer, and the speed reducer is connected to the screw conveyor shaft.

[0012] Furthermore, it also includes a coupling that connects the reducer and the screw conveyor shaft.

[0013] Furthermore, the coupling includes a feed coupling and a motor coupling that are coaxially connected. The feed coupling is connected to the screw conveyor shaft, and the motor coupling is connected to the reducer.

[0014] Furthermore, the axial direction of the drive shaft of the drive motor is perpendicular to the axial direction of the screw conveyor shaft.

[0015] Furthermore, it also includes a frame, on which the drive motor, bearing housing, and hopper are all mounted.

[0016] The technical solution provided by this utility model has the following beneficial effects:

[0017] On the side of the bearing housing facing the hopper, a sealing seat is installed on the inner wall of the connecting hole. An oil seal sleeve is fitted onto the connecting shaft section. The oil seal sleeve is fitted onto the sealing seat, and a sealing ring is provided between the oil seal sleeve and the sealing seat to seal the assembly gap between the oil seal sleeve and the sealing seat. In this way, the rotation of the screw conveyor shaft is not affected, and a good sealing effect is achieved. This effectively prevents dust from seeping in and causing obstruction, reduces the need for frequent maintenance, reduces maintenance costs, and improves production efficiency. Attached Figure Description

[0018] Figure 1 The image shown is a top view of the screw feeder in the embodiment.

[0019] Figure 2 The image shown is a side view of the screw feeder in the embodiment.

[0020] Figure 3 The image shown is a front view of the screw feeder in the embodiment.

[0021] Figure 4 The diagram shown is a partial structural schematic of the screw feeder in the embodiment. Detailed Implementation

[0022] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0023] In the description of this invention, terms such as "upper," "lower," "left," "right," "front," and "rear," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0025] Reference Figures 1 to 3 As shown, this embodiment provides a screw feeder, specifically a double screw feeder; it includes a drive motor 10, a bearing housing 20, a hopper 30, and a screw conveyor shaft 40 disposed within the hopper 30; the bearing housing 20 is fixed to one side of the hopper 30; two sets of bearings are disposed within the bearing housing 20; there are two screw conveyor shafts 40, which are arranged side by side within the hopper 30; the connecting shaft sections 41 of the two screw conveyor shafts 40 are both inserted into the bearing housing 20 and connected to the two sets of bearings respectively; the drive motor 10 drives the connected screw conveyor shafts 40 to rotate.

[0026] Because there is more dust on the side facing the hopper 30, the bearing housing 20 has a connecting hole on the side facing the hopper 30 for the connecting shaft section 41 to pass through. A sealing seat 21 is provided on the inner wall of the connecting hole. This sealing seat 21 can be understood as having an annular structure. An oil seal 42 is mounted on the connecting shaft section 41, and an oil seal sleeve 43 is fitted around the outer periphery of the oil seal 42. The oil seal sleeve 43 is mounted on the sealing seat 21, and a sealing ring 22 is provided between the oil seal sleeve 43 and the sealing seat 21 to seal the assembly gap between the oil seal sleeve 43 and the sealing seat 21. In this way, the rotation of the screw conveyor shaft 40 is not affected, and a good sealing effect is achieved, effectively preventing dust from seeping into the bearing housing 20 and causing obstruction. Frequent maintenance is unnecessary, maintenance costs are reduced, and production efficiency is improved.

[0027] Specifically, in this embodiment, the oil seal sleeve 43 is made of ceramic, which has good wear resistance.

[0028] The hopper 30 and the spiral conveyor shaft 40 are made of titanium TA2 material, which gives the parts in contact with the material high corrosion resistance and avoids the problem of magnetic materials generated by traditional feeders. It is widely used in the new energy lithium battery industry.

[0029] The drive motor 10 drives two spiral conveyor shafts 40 to rotate in opposite directions. This configuration allows for a cutting-type feeding process for wet products, i.e., materials with high viscosity, which can speed up the material conveying process.

[0030] Specifically, gears 13 are respectively fitted onto the two spiral conveyor shafts 40, and the gears 13 on the two spiral conveyor shafts 40 mesh with each other. The drive end of the drive motor 10 is connected to one of the spiral conveyor shafts 40, thereby driving the two spiral conveyor shafts 40 to rotate in opposite directions. By adopting an active and driven driving method, one drive motor 10 can simultaneously drive the two spiral conveyor shafts 40 to complete the reverse rotation action, simplifying the structure. At the same time, two sets of bearings are set in the same bearing housing 20 to connect the connecting shaft sections 41 of the two spiral conveyor shafts 40 respectively, making the transmission relatively stable and less prone to positional displacement that would affect the transmission.

[0031] The end of the connecting shaft section 41 of the spiral conveyor shaft 40 extends from the side of the bearing housing 20 away from the hopper 30, and the drive motor 10 drives the end of the connecting shaft section 41 of the spiral conveyor shaft 40; this keeps the drive motor 10 away from the hopper 30, effectively preventing dust from seeping in. At the same time, the aforementioned gear 13 is also provided at the end of the connecting shaft section 41 of the spiral conveyor shaft 40.

[0032] It also includes a speed reducer 11 and a coupling 12. The drive end of the drive motor 10 is connected to the speed reducer 11, and the speed reducer 11 is connected to one of the screw conveyor shafts 40 through the coupling 12, thereby forming a stable connection. Specifically, the coupling 12 includes a feed coupling 122 and a motor coupling 121 that are coaxially connected. The feed coupling 122 is connected to the screw conveyor shaft 40, and the motor coupling 121 is connected to the speed reducer 11.

[0033] Furthermore, it also includes a protective cover 14, which covers the end of the connecting shaft section 41 of the coupling 12, gear 13 and the spiral transmission shaft 40 that passes through the bearing housing 20; thus providing excellent protection.

[0034] Furthermore, the axial direction of the drive shaft of the drive motor 10 is perpendicular to the axial direction of the screw conveyor shaft 40. In this way, the drive motor 10 can be placed sideways, shortening the overall length and making the layout more advantageous.

[0035] Furthermore, it also includes a frame 50, on which the drive motor 10, bearing housing 20 and hopper 30 are all mounted to form a complete machine structure.

[0036] The above discloses one of the preferred solutions of this application. Of course, it is not limited to this in other embodiments. For example, the structure of the reducer 11 may not be used, that is, the drive end of the drive motor 10 may be directly connected to the spiral conveyor shaft 40; or, the two spiral conveyor shafts 40 may be driven by two drive motors 10 respectively; or, the number of spiral conveyor shafts 40 may be one or more; and so on.

[0037] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A screw feeder, characterized by: The application relates to a screw conveying device, which comprises a driving motor, a bearing box, a material bin and a screw conveying shaft arranged in the material bin; the bearing box is fixed on one side of the material bin; the connecting shaft section of the screw conveying shaft is arranged in the bearing box and connected with the bearing group of the bearing box; the driving motor drives the screw conveying shaft; the side of the bearing box facing the material bin is provided with a connecting hole for the connecting shaft section to pass through; the inner wall of the connecting hole is provided with a sealing seat; the connecting shaft section is provided with an oil seal; the outer periphery of the oil seal is provided with an oil seal sleeve; the oil seal sleeve is assembled on the sealing seat; and a sealing ring is arranged between the oil seal sleeve and the sealing seat to seal the assembly gap between the oil seal sleeve and the sealing seat.

2. A screw feeder according to claim 1, characterised in that: The number of the screw conveying shafts is two; the two screw conveying shafts are arranged side by side in the material bin; the bearing box is provided with two bearing groups; and the connecting shaft sections of the two screw conveying shafts are arranged in the bearing box and connected with the two bearing groups respectively.

3. A screw feeder as claimed in claim 2, characterised in that: The driving motor drives the two screw conveying shafts to rotate reversely.

4. A screw feeder as claimed in claim 3, characterised in that: Gear wheels are arranged on the two screw conveying shafts respectively; the gear wheels on the two screw conveying shafts are engaged; the driving end of the driving motor is connected with one of the screw conveying shafts, so that the two screw conveying shafts are driven to rotate reversely.

5. A screw feeder according to claim 1 or 2, characterised in that: The end of the connecting shaft section of the screw conveying shaft is arranged to pass out from the side of the bearing box away from the material bin; the driving motor drives the end of the connecting shaft section of the screw conveying shaft.

6. A screw feeder according to claim 1 or 2, characterised in that: The application further comprises a speed reducer; the driving end of the driving motor is connected with the speed reducer; and the screw conveying shaft is connected through the speed reducer.

7. A screw feeder according to claim 6, characterised in that: The application further comprises a shaft coupling; the shaft coupling is connected between the speed reducer and the screw conveying shaft.

8. A screw feeder according to claim 7, characterised in that: The shaft coupling comprises coaxially connected feeding shaft couplings and motor shaft couplings; the feeding shaft couplings are connected with the screw conveying shafts; and the motor shaft couplings are connected with the speed reducer.

9. The screw feeder of claim 7, wherein: The axial direction of the driving shaft of the driving motor is perpendicular to the axial direction of the screw conveying shaft.

10. A screw feeder according to claim 1 or 2, characterised in that: The application further comprises a rack; the driving motor, the bearing box and the material bin are arranged on the rack.

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