Bran multi-linkage delivery auger conveying equipment

Abstract

The utility model relates to wheat bran multi-linkage delivery auger conveying equipment which comprises a transmission device, auger shafts and a box shell, at least two auger shafts are rotationally connected in the box shell, each auger shaft is of a conical structure, and blades are arranged on the outer wall of each auger shaft; any one of the auger shafts is parallel to each other, and the rotation directions of every two adjacent auger shafts are opposite. And the transmission device is rotationally connected with one end of the auger shaft. According to the multi-connected delivery auger conveying equipment, the first-in first-out function of materials is achieved under the gravity action of bran, the materials are effectively prevented from being accumulated in a bin, and it is guaranteed that the materials are smoothly delivered out of the bin. In the using process, the rotating directions of the blades on the two adjacent auger shafts are opposite, so that the rotating directions are opposite, but the material pushing directions are consistent, and therefore the function of normally conveying materials out of a bin can be achieved while the materials are turned over.

Description

Technical Field

[0001] This utility model relates to the field of grain conveying technology, and in particular to a multi-unit auger conveyor for bran. Background Technology

[0002] Wheat bran is a byproduct of wheat processing. Due to its high moisture content and poor flowability, wheat bran is prone to sticking together. Traditional silo bottom unloaders consist of a conical silo bottom with a vibrating motor installed there. These silo bottom vibrating unloaders rely on the vibration of the motor to power the bran discharge, using a specific frequency to facilitate smooth discharge. For silos with large inlets, auger conveyors are often used. The material enters the casing through the inlet and begins to move under the thrust of the helical blades. The helical shape converts the motor's rotational power into axial thrust on the material, pushing it to the outlet for discharge.

[0003] Due to the special properties of bran, it is prone to sticking together during vibration. This leads to increased material density and arching, causing blockages in the silo. This not only reduces the material discharge efficiency but may also result in the bottom material being discharged while the upper material clumps together. If this material suddenly falls during vibration, it may smash against the discharge device. Concentrated material transport can also damage the equipment.

[0004] Numerous problems have been exposed when augers are used to convey bran. Specifically, firstly, the material pressure at the inlet is relatively high. When designed with a standard shaft diameter, the blade shaft is prone to bending under the material pressure. Furthermore, the blade shaft cannot maintain its straightness and stability under long-term pressure, thus affecting the normal operation of the equipment. Secondly, conventional augers also exhibit uneven discharge, with material closer to the outlet often being discharged first, causing material in front of the inlet to not be discharged in time. This uneven discharge leads to material accumulation in the bin, and the material in front of the inlet cannot be discharged in time, causing arching, further increasing the risk of material arching in the bin. Utility Model Content

[0005] The purpose of this utility model is to provide a multi-unit auger conveyor for wheat bran, which utilizes the gravity of wheat bran to achieve the first-in-first-out function of materials, effectively preventing material accumulation in the silo and ensuring smooth material discharge, thereby solving the problems encountered in the above-mentioned background technology.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A multi-unit auger conveyor for bran discharge includes a transmission device, auger shafts, and a housing. At least two auger shafts are rotatably connected inside the housing. The auger shafts have a conical structure and blades on their outer walls. Any one of the auger shafts is parallel to each other, and the rotation directions of two adjacent auger shafts are opposite. The transmission device is rotatably connected to one end of the auger shaft.

[0008] In the above scheme, the auger shafts are arranged in even pairs to form a row for conveying materials.

[0009] In one embodiment, the housing includes a feed box and a discharge box, which are fixedly connected by bolts. The top of the feed box has a feed inlet, and the bottom of the discharge box has a discharge outlet. The shaft of the auger extends from the feed box to the discharge box.

[0010] In the above scheme, the shaft of the auger shaft has a conical structure in the feed box and a cylindrical structure in the discharge box.

[0011] The feed box consists of several U-shaped boxes that are fixed together with bolts.

[0012] Alternatively, in the above scheme, the shaft of the auger shaft can be configured such that the shaft body includes a tapered section and a straight section, the tail end of the tapered section is fixedly connected to the head end of the straight section, the tapered section and the straight section are coaxially arranged, the tapered section is located in the feed box, and the straight section is located in the discharge box.

[0013] In the above scheme, the transmission device includes a geared motor and a coupling. The output end of the geared motor is connected to the coupling for transmission, and the output end of the coupling is rotatably connected to the head end of the auger shaft. The head end and tail end of the auger shaft are rotatably connected to the housing through sealing components.

[0014] Specifically, the sealing assembly includes a bearing housing and a bearing cover. The bearing housing is installed on both sides of the bottom of the housing, and a bearing that is rotatably connected to the shaft of the auger is installed inside the bearing housing. The bearing housing and the bearing cover are connected by screws and the connection is sealed by a sealing ring.

[0015] Compared with existing technologies, the beneficial effects of this utility model are as follows: This multi-unit auger conveyor, used for discharging materials such as bran, has a unique structural design. It consists of two or more even-numbered auger shafts arranged in a row, typically with adjacent shafts rotating in opposite directions. During blade prefabrication, one shaft rotates left-handed and the other right-handed, rotating in opposite directions within the casing. This structural form can generate a more stable thrust and material distribution during material conveying. Therefore, it can be said that this multi-unit auger conveyor utilizes the gravity of bran to achieve a first-in, first-out (FIFO) material flow, effectively preventing material accumulation within the silo and ensuring smooth material discharge. Attached Figure Description

[0016] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a top view of the structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of this utility model during implementation;

[0020] Figure 4 This is a schematic diagram of the sealing component in this utility model.

[0021] The following numbers are used in the diagram: 1-Gear motor; 11-Coupling; 2-Auger shaft; 21-Conical section; 22-Straight section; 23-Blade; 24-Rotating shaft; 3-Feed box; 31-Feed inlet; 32-Feed hopper; 4-Discharge box; 41-Discharge outlet; 42-Sealing assembly; 421-Bearing housing; 422-Bearing cover; 423-Bearing; 424-Sealing ring. Detailed Implementation

[0022] To make the technical means, creative features, achieved objectives and effects of this utility model easier to understand, the utility model will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of this utility model, and therefore only show the relevant components of this utility model.

[0023] Based on the technical solution of this utility model, without changing the essential spirit of this utility model, those skilled in the art can propose various interchangeable structural methods and implementation methods. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model, and should not be regarded as the entirety of this utility model or as a limitation or restriction of the technical solution of this utility model.

[0024] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] Example 1, as Figures 1 to 3As shown, a multi-unit auger conveyor for bran includes a transmission device, auger shafts 2, and a housing. At least two auger shafts 2 are rotatably connected inside the housing, arranged in even pairs to form a continuous conveying system for transporting materials. Under the conveying action of multiple auger shafts 2, the accumulated bran is evenly dispersed, preventing material caking and accelerating the discharge of bran from the housing.

[0026] The auger shaft 2 has a conical structure, and its outer wall is equipped with blades 23, which are arranged in a rotating manner at equal intervals. Any two auger shafts 2 are parallel to each other, and the rotation directions of adjacent auger shafts 2 are opposite, which can play the role of turning materials. The blades 23 on two adjacent auger shafts 2 rotate in opposite directions, so their directions are also opposite, but the direction of pushing materials is the same, thus enabling normal conveying and discharge functions while turning materials.

[0027] The transmission device is rotatably connected to one end of the auger shaft 2, providing power for the auger shaft 2 to convey materials. The transmission device includes a geared motor 1 and a coupling 11. The output end of the geared motor 1 is connected to the coupling 11, and the output end of the coupling 11 is rotatably connected to the head end of the auger shaft 2. The head end and tail end of the auger shaft 2 are rotatably connected to the housing through sealing components 42, mainly the rotating shafts 24 at both ends of the auger shaft 2 rotate with the housing.

[0028] In implementation, each auger shaft 2 can be connected to a separate geared motor 1 to transmit torque; alternatively, a geared motor 1 can drive a group of auger shafts 2 through a pulley to complete the transmission action, wherein each group of auger shafts 2 includes one auger shaft 2 with blades 23 rotating in the forward direction and another auger shaft 2 with blades 23 rotating in the reverse direction; alternatively, a geared motor 1 can be used to drive multiple auger shafts 2 to rotate at one time by utilizing the transmission effect of the pulley.

[0029] Specifically, please refer to Figure 4 The sealing assembly 42 is installed on both sides of the housing. The sealing assembly 42 includes a bearing seat 421 and a bearing cover 422. The bearing seat 421 is installed on both sides of the bottom of the housing. The bearing seat 421 has a bearing 423 installed inside, which is rotatably connected to the shaft 24 of the auger shaft 2. The bearing 426 is used to make the auger shaft 2 rotate inside the housing under the drive of the geared motor 1 and push the bran material out of the silo. The bearing seat 421 and the bearing cover 422 are connected by screws and the connection is sealed by a sealing ring 424.

[0030] This multi-unit auger conveyor system, designed for discharging materials such as bran, features a unique structural design. It consists of two or more even-numbered auger shafts arranged in a row, typically with adjacent shafts rotating in opposite directions. During the pre-fabrication of the blades 23, one shaft rotates counter-clockwise and the other clockwise, rotating in opposite directions within the casing. This structural configuration generates a more stable thrust and material distribution during material conveying. Therefore, this multi-unit auger conveyor system utilizes the gravity of the bran to achieve a first-in, first-out (FIFO) material flow, effectively preventing material accumulation within the silo and ensuring smooth material discharge.

[0031] Example 2, based on Example 1, includes a feeding box 3 and a discharging box 4. The feeding box 3 and the discharging box 4 are fixedly connected by bolts. The bolts are fixed at the connection point between the feeding box 3 and the discharging box 4, and a flange surface is provided at the connection point for easy installation. The bolts are fixed using this flange surface. The interior of the feeding box 3 and the discharging box 4 should have a smooth and flat bottom and side walls to facilitate the conveying of bran materials.

[0032] Because the feed box 3 is relatively long, it can receive a large amount of bran material through the feed hopper 32 at one time. During the manufacturing process, the feed box 3 is made of several U-shaped boxes that are fixed together by bolts. Similarly, its bottom surface and side walls should be smooth and flat to facilitate the internal conveying of bran material.

[0033] The top of the feed box 3 is provided with a feed inlet 31. The feed hopper 32 sends the received bran material to the feed box 3 through the feed inlet 31 for conveying by the auger shaft 2. The bottom of the discharge box 4 is provided with a discharge outlet 41. The discharge outlet 41 is located at the bottommost position, allowing the material to fall freely after it is conveyed. The shaft of the auger shaft 2 extends from the feed box 3 to the discharge box 4, also pushing the material from the feed box 3 to the discharge box 4.

[0034] The auger shaft 2 has a conical structure in the feed box 3 and a cylindrical structure in the discharge box 4. At least two auger shafts 2 are rotatably connected within the box housings, with adjacent auger shafts 2 rotating in opposite directions, thus serving to tip the material during conveying. If one adjacent shaft is left-handed, the other is right-handed. The blades 22 on the auger shaft 2 are standard pitch helical blades.

[0035] Specifically, the shaft of the auger shaft 2 includes a tapered section 21 and a straight section 22. The tail end of the tapered section 21 is fixedly connected to the head end of the straight section 22. The tapered section 21 and the straight section 22 are coaxially arranged. The tapered section 21 is located in the feed box 3, and the straight section 22 is located in the discharge box 4.

[0036] In summary, the material enters the casing through the inlet 31 and begins to move under the thrust of the spiral blades on the outer wall of the auger shaft 2. The blades 23 are key components of the auger shaft 2; their spiral shape converts the rotational power of the geared motor 1 into axial thrust on the material. As the auger shaft 2 rotates continuously, the bran material gradually moves along the casing towards the outlet 41. Due to the opposite rotation directions of adjacent auger shafts 2 and the action of the spiral blades, the material is continuously agitated and mixed, further promoting the flowability of the bran material and preventing blockage within the casing. Simultaneously, due to the structural characteristics of the multi-unit auger, the bran material maintains a relatively uniform distribution during transport, avoiding localized accumulation, and is discharged when it reaches the outlet 41.

[0037] The auger shaft 2 of the feed box 3 is designed in a conical shape, while the pitch of the blades 23 on the outer wall of the auger shaft 2 is kept at the standard pitch. The design principle of the conical auger shaft is that during the rotation of the auger shaft 2, the material gradually enters the feed box 3 from the feed inlet 31 along the entire length of the feed box 3, resulting in better uniformity of bran material entry. This method not only effectively solves the problem of auger shaft 2 deformation under pressure, but also realizes the first-in, first-out (FIFO) of bran material in the bin, with the bottom bran material exiting the bin first, and the material exiting the bin sequentially from bottom to top.

[0038] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A multi-unit auger conveyor for bran discharge, characterized in that: It includes a transmission device, an auger shaft (2) and a housing. At least two auger shafts (2) are rotatably connected inside the housing. The auger shafts (2) have a conical structure and blades (23) are provided on their outer walls. Any one of the auger shafts (2) is parallel to each other, and the rotation directions of two adjacent auger shafts (2) are opposite. The transmission device is rotatably connected to one end of the auger shaft (2).

2. The multi-unit auger conveyor for bran as described in claim 1, characterized in that: The auger shafts (2) are arranged in even pairs to form a row for conveying materials.

3. The multi-unit auger conveyor for bran as described in claim 1, characterized in that: The housing includes a feed box (3) and a discharge box (4). The feed box (3) and the discharge box (4) are fixedly connected by bolts. The top of the feed box (3) is provided with a feed port (31), and the bottom of the discharge box (4) is provided with a discharge port (41). The shaft of the auger shaft (2) extends from the feed box (3) to the discharge box (4).

4. The multi-unit auger conveyor for bran as described in claim 3, characterized in that: The shaft of the auger shaft (2) is conical in the feed box (3) and cylindrical in the discharge box (4).

5. A multi-unit auger conveyor for bran as described in claim 3, characterized in that: The feed box (3) consists of several U-shaped boxes that are fixed together by bolts.

6. The multi-unit auger conveyor for bran as described in claim 3, characterized in that: The shaft of the auger shaft (2) includes a tapered section (21) and a straight section (22). The tail end of the tapered section (21) is fixedly connected to the head end of the straight section (22). The tapered section (21) and the straight section (22) are coaxially arranged. The tapered section (21) is located in the feed box (3), and the straight section (22) is located in the discharge box (4).

7. The multi-unit auger conveyor for bran as described in claim 1, characterized in that: The transmission device includes a geared motor (1) and a coupling (11). The output end of the geared motor (1) is connected to the coupling (11) for transmission. The output end of the coupling (11) is rotatably connected to the head end of the auger shaft (2). The head end and tail end of the auger shaft (2) are rotatably connected to the housing through a sealing assembly (42).

8. A multi-unit auger conveyor for bran as described in claim 7, characterized in that: The sealing assembly (42) includes a bearing housing (421) and a bearing cover (422). The bearing housing (421) is installed on both sides of the bottom of the housing. Inside the bearing housing (421) is a bearing (423) that is rotatably connected to the shaft (24) of the auger shaft (2). The bearing housing (421) and the bearing cover (422) are connected by screws and the connection is sealed by a sealing ring (424).

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