Half-shaft type efficient screw conveyor

Abstract

The utility model belongs to the technical field of spiral conveying, and particularly relates to a half-shaft type efficient spiral conveyor which comprises a pipe barrel, a spiral shaft and a driver, the spiral shaft is arranged in the pipe barrel, the driver is connected with one end of the pipe barrel, and the other end of the pipe barrel is open. The sealing box is connected with one end of the pipe barrel through a flange; the driver is a gear reducer motor; the spiral shaft is of a half-shaft structure, a spiral blade at one end of the spiral shaft is connected with a center shaft, and other parts are of a hollow spiral blade structure without the center shaft. A feeding hopper is arranged in the middle of the pipe barrel, and a rectangular flange is arranged on the edge of the feeding hopper. The conveyor has the advantages that the half-shaft type spiral shaft and the pipe barrel with the funnel are adopted to achieve directional conveying of livestock and poultry carcass broken objects, the spiral shaft can form certain deformation in the pipe barrel to cope with size changes of the conveyed objects, accidental blocking and winding are prevented, and smooth work of the conveyor is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of screw conveying technology, and in particular relates to a semi-shaft type high-efficiency screw conveyor. Background Technology

[0002] A screw conveyor is a machine that uses a motor to drive screw blades to rotate, pushing materials to achieve the purpose of conveying. It can convey horizontally, inclined or vertically, and has the advantages of simple structure, small cross-sectional area, good sealing, convenient operation, easy maintenance and convenient closed transportation. Screw conveyors are classified into two types based on their conveying method: shafted screw conveyors and shaftless screw conveyors. They are also classified into two types based on their external shape: U-shaped screw conveyors and shaftless screw conveyors. Tubular screw conveyor. (Link provided: https: / / baike.baidu.com / item / %E7%AE%A1%E5%BC%8F%E8%9E%BA%E6%97%8B%E8%BE%93%E9%80%81%E6%9C%BA / 10607069?fromModule=lemma_inlink)Shafted screw conveyors are suitable for conveying non-sticky dry powder materials and small granular materials (such as cement, fly ash, lime, grain, etc.), while shaftless screw conveyors are suitable for conveying sticky and easily entangled materials (such as sludge, biomass, garbage, etc.). The working principle of a screw conveyor is that rotating helical blades... The screw conveyor is a conveyor system where materials are pushed and transported. The force that prevents the material from rotating with the screw conveyor blades is the weight of the material itself and the frictional resistance of the screw conveyor casing against the material. The screw blades welded to the rotating shaft of the screw conveyor have different surface shapes depending on the material being conveyed, including solid, ribbon, and paddle types.

[0003] Chinese utility model patent application number 201320114520.6 discloses a cantilevered half-shaft screw conveyor, suitable for use as a material conveying device on agricultural machinery such as balers and combine harvesters. During operation, an external power source drives the cantilevered half-shaft screw conveyor II and sprocket I to rotate via a pulley. Sprocket I, through a certain connection method, drives sprocket II and cantilevered half-shaft screw conveyor I to rotate. The cantilevered half-shaft screw conveyor I and cantilevered half-shaft screw conveyor II are concentric, but their helical blades rotate in opposite directions, resulting in the same direction of rotation and equal speed during operation. After the material enters the material collection chamber, it is concentrated towards the center by the combined action of the two conveyors, awaiting further processing.

[0004] Chinese utility model patent application number 201320117670.2 discloses a cantilevered half-shaft screw conveyor. The design features a spindle and support plate fixed inside a shaft cylinder, a screw blade portion fixed to the shaft cylinder, a baffle fixed to one end of the shaft cylinder, a reinforcing screw I connected to the shaft cylinder, screw blades, and baffle, and reinforcing screw II and III respectively fixed to both sides of the inner ring of the screw blades and connected to the shaft cylinder and reinforcing screw I. This screw conveyor adopts a cantilevered structure for greater flexibility. The screw blade portion being fixed to the shaft cylinder eliminates the shaft cylinder in the main working area, preventing material from entangled in it, increasing the conveying speed, reducing potential malfunctions, and improving equipment efficiency.

[0005] In the field of harmless treatment of livestock and poultry carcasses, the carcasses are automatically fed into the trough at the top of a shredder. The shredder shreds the meat, most of the bones, and hair from the animal carcasses, which then enters a spiral conveyor connected to the bottom. The carcasses are then conveyed to the next stage for disinfection and drying. During the shredder's operation, some fine hairs and muscles, due to their inherent softness and toughness, are difficult to shred thoroughly. After entering the spiral conveyor, they easily become entangled on the spiral shaft, affecting the conveying efficiency. Existing spiral structures cannot effectively solve both the strength and anti-entanglement issues, requiring further design optimization. Utility Model Content

[0006] The purpose of this invention is to provide a semi-shaft type high-efficiency spiral blade conveyor that overcomes the shortcomings of the prior art. It uses semi-shaft spiral blades to achieve directional conveying of crushed livestock and poultry carcasses. The spiral blades can form a certain amount of deformation inside the tube to cope with changes in the characteristics of the conveyed material and prevent jamming and entanglement. The direct-drive geared motor has strong driving force and prevents the interruption of driving force caused by instantaneous overload.

[0007] To achieve the above objectives, this utility model employs the following technical solution:

[0008] A semi-shaft type high-efficiency screw conveyor includes a tube, a screw shaft, and a driver. The screw shaft is disposed inside the tube, and the driver is connected to one end of the tube. The other end of the tube is open. A sealing box is connected to one end of the tube. One side of the sealing box is connected to one end of the tube via a flange, and the other side of the sealing box is close to a pipe clamp provided on the screw shaft. The driver is a gear reducer motor. The screw shaft has a semi-shaft structure, with one end of its helical blades connected to a central shaft, and the other part being a hollow helical blade structure without a central shaft. A feeding hopper is provided in the center of the tube, and a rectangular flange is provided on the edge of the feeding hopper.

[0009] Furthermore, the sealing box includes an outer ring, an inner ring, a double bearing assembly, a skeleton seal ring, and an O-ring seal ring. The outer ring is connected to one end of the tube via a flange and screws. The inner ring is fitted onto the central shaft. At least two O-ring seal rings are provided between the inner ring and the central shaft. A double bearing assembly and a skeleton seal ring are provided between the outer ring and the inner ring. The skeleton seal ring is located on one side of the tube end. The double bearing assembly is a combination of a radial ball bearing and a tapered roller bearing.

[0010] Furthermore, the side wall of the feeding hopper is provided with an observation window, and a transparent cover plate is connected to the observation window.

[0011] Furthermore, the model number of the gear reducer motor is GKA67B-108.03-Y2-90S-4-M1-R.

[0012] Furthermore, the outer diameter of the spiral blade is 151-180mm, the inner diameter is 45-55mm, the pitch is 150-250mm, and the thickness is 6-10mm.

[0013] Furthermore, a lifting lug is provided on the top outer side of the other end of the tube.

[0014] Furthermore, the free end of the helical shaft extends at least half a pitch to the outside of the tube outlet.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The semi-shaft type screw shaft and the tube with funnel are used to realize the directional conveying of livestock and poultry carcass fragments. The screw shaft can form a certain amount of deformation in the tube to cope with the size changes of the conveyed material, prevent accidental blockage and entanglement, and ensure the smooth operation of the conveyor.

[0017] Direct-drive geared motors have strong driving force and can effectively prevent belt or chain breakage caused by instantaneous overload in conventional belt and chain conveyor structures, thus reducing unexpected downtime. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0019] Figure 2 yes Figure 1 Sectional view along line AA;

[0020] Figure 3 This is a schematic diagram of the spiral shaft structure in an embodiment of this utility model.

[0021] In the diagram: 1-pipe, 2-spiral shaft, 3-driver, 4-sealing box, 5-feeding funnel, 6-rectangular flange, 7-observation window, 8-spiral blade, 9-lifting lug, 10-central shaft, 11-outer ring, 12-inner ring, 13-double bearing assembly, 14-skeleton sealing ring, 15-O-ring seal, 16-pipe clamp. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the specific embodiments used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the specific embodiments described below are some embodiments of this utility model. For those skilled in the art, other specific embodiments can be obtained based on these specific embodiments without creative effort.

[0024] The components of the present invention described and shown in the specific embodiments herein can be arranged and designed in numerous different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the specific embodiments is not intended to limit the scope of the claimed invention, but only to illustrate selected embodiments of the invention.

[0025] See Figure 1-3This is a schematic diagram of an embodiment of a semi-shaft type high-efficiency screw conveyor of this utility model. It includes a tube 1, a screw shaft 2, and a driver 3. The screw shaft 2 is disposed inside the tube 1. The driver 3 is connected to one end of the tube 1, and the other end of the tube 1 is open. A sealing box 4 is connected to one end of the tube 1, and the sealing box 4 is connected to one end of the tube 1 via a flange. The other side of the sealing box 4 is close to a clamp 16 located on the screw shaft 2. The driver 3 is a gear reducer motor with specifications GKA67B-108.03-Y2-90S-4-M1-R. The gear reducer can provide greater torque output and cope with unexpected blockages. The screw shaft 2 is a semi-shaft structure. One end of its screw blades 8 is connected to a central shaft 10, while the other part is a hollow screw blade structure without a central shaft, which can provide a larger conveying space. A feeding hopper 5 is located in the center of the tube 1, and the edge of the feeding hopper 5 is provided with a rectangular flange 6 for easy connection and sealing with related equipment.

[0026] The sealing box 4 includes an outer ring 11, an inner ring 12, a double bearing assembly 13, a skeleton sealing ring 14, and an O-ring 15. The outer ring 11 is connected to one end of the tube 1 via a flange and screws. The inner ring 12 is fitted onto the central shaft 10, and at least two O-rings 15 are provided between the inner ring 12 and the central shaft 10. The double bearing assembly 13 and the skeleton sealing ring 14 are located between the outer ring 11 and the inner ring 12. The skeleton sealing ring 14 is located on one side of the end of the tube 1. The double bearing assembly 13 is a combination of radial ball bearings and tapered roller bearings, providing support for the screw shaft 2. A drain hole is also provided on the outer ring 11 between the two bearings to prevent liquid contained in the material from seeping out along the shaft end and into the space between the bearings. This ensures that blood, oil, and excrement from shredded livestock carcasses are quickly discharged and do not overflow from the motor side of the screw shaft, which is beneficial for maintaining environmental hygiene and motor safety. The other end of the tube 1 is open and connected to disinfection and drying equipment.

[0027] The spiral blades 8 on the spiral shaft 2 have an outer diameter of 151-180mm, an inner diameter of 45-55mm, a pitch of 150-250mm, and a thickness of 6-10mm. In this embodiment, the preferred dimensions are an outer diameter of 151mm, an inner diameter of 45mm, a pitch of 150mm, and a thickness of 6mm. These dimensions allow the spiral shaft to achieve the best combination of strength and flexibility. The spiral shaft 2 can deform to accommodate changes in the size of the conveyed material clumps, preventing accidental blockages and entanglement, and ensuring the smooth operation of the conveyor.

[0028] To facilitate the connection and fixation of the conveyor, a lifting lug 9 is provided on the top outer side of the other end of the tube 1, allowing it to be connected to a fixed object nearby to prevent shaking during operation. An observation window 7 is provided on the side wall of the feeding hopper 5, and a transparent cover is attached to the observation window 7, which allows for easy observation of the conveyor's operation from the outside. In case of accidental blockage, the observation window 7 can also be opened to allow unblocking tools to enter for easy cleaning.

[0029] The free end of the spiral shaft 2 extends to the outside of the outlet of the tube 1 by at least half a pitch, which can provide a larger deformation space for the spiral shaft 2 and further prevent jamming and entanglement.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A semi-shaft type high-efficiency screw conveyor, comprising a tube, a screw shaft, and a driver, wherein the screw shaft is disposed inside the tube, the driver is connected to one end of the tube, and the other end of the tube is open, characterized in that, One end of the tube is connected to a sealing box, one side of which is connected to one end of the tube via a flange, and the other side of which is close to a pipe clamp on the spiral shaft; the driver is a gear reducer motor; the spiral shaft is a half-shaft structure, with one end of its spiral blades connected to a central shaft, and the other part being a hollow spiral blade structure without a central shaft; a feeding funnel is provided in the center of the tube, and a rectangular flange is provided on the edge of the feeding funnel.

2. The semi-shaft type high-efficiency screw conveyor according to claim 1, characterized in that, The sealing box includes an outer ring, an inner ring, a double bearing assembly, a skeleton seal ring, and an O-ring. The outer ring is connected to one end of the tube via a flange and screws. The inner ring is fitted onto the central shaft. At least two O-rings are provided between the inner ring and the central shaft. A double bearing assembly and a skeleton seal ring are provided between the outer ring and the inner ring. The skeleton seal ring is located on one side of the tube end. The double bearing assembly is a combination of a radial ball bearing and a tapered roller bearing.

3. The semi-shaft type high-efficiency screw conveyor according to claim 1, characterized in that, The feeding hopper has an observation window on its side wall, and a transparent cover is connected to the observation window.

4. A semi-shaft type high-efficiency screw conveyor according to claim 1, characterized in that, The model number of the gear reducer motor is GKA67B-108.03-Y2-90S-4-M1-R.

5. A semi-shaft type high-efficiency screw conveyor according to claim 1, characterized in that, The outer diameter of the spiral blade is 151-180mm, the inner diameter is 45-55mm, the pitch is 150-250mm, and the thickness is 6-10mm.

6. A semi-shaft type high-efficiency screw conveyor according to claim 1, characterized in that, The other end of the tube is provided with a lifting lug plate on the top outer side.

7. A semi-shaft type high-efficiency screw conveyor according to claim 1, characterized in that, The free end of the helical shaft extends to the outside of the tube outlet by at least half a pitch.

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