A uniform thin-layer fabric distribution device suitable for finely crushed materials

Abstract

This utility model discloses a uniform thin-layer material spreading device suitable for finely crushed materials, belonging to the field of mechanical equipment. The uniform material spreading device includes two spreading stages that can adjust the material thickness. First, a spiral conveyor disc is provided at the bottom of the hopper, which can drive the rotating shaft through a drive device to form the first material spreading. Second, two rollers are designed at the lower end of the spiral conveyor disc, and a grooved roller and an auxiliary feeding roller are set below the spiral conveyor roller. With the cooperation of the interval feeding roller and the auxiliary feeding roller, the finely crushed material intermittently fills the material trough on the interval feeding roller and rotates with the interval feeding roller. A conveying device is set below the interval feeding roller. The material conveyed by the interval feeding roller in a limited quantity falls onto the conveying device during the intermittent feeding period of the interval feeding roller, forming a thin layer of loose material. The loose material is spread by the fast belt and vibratory conveying of the conveying device, making the material on the conveying device even thinner, realizing the function of uniform thin-layer feeding.

Description

Technical Field

[0001] This utility model belongs to the field of material spreading equipment, specifically relating to a uniform thin-layer spreading device suitable for finely crushed materials. Background Technology

[0002] In the fine crushing industry, material thinning is a crucial process in automated production lines with continuous fine crushing processes that require detection and control. Various processing equipment demands quantitative or limited feeding of thin layers. Current production lines primarily use belt conveyors combined with feed rollers, vibrating feeders, screw conveyors, and hoppers combined with rotating blades. Existing thinning technologies include vibrating paving, differential belt conveying paving, pneumatic paving, or combinations of these technologies. While these methods can achieve continuous, high-flow-rate feeding, controlling the thin material layer feeding remains challenging.

[0003] For example, the utility model patent with announcement number CN 203998181 U discloses a wide-width thin-layer uniform material distribution device for fine-particle materials; the solution discloses a spiral feeding device, and although it also discloses a feeding roller, it cannot achieve relatively accurate quantitative material control. The gap between the feeding roller and the material self-locking cover has the problem of uncontrollable material drop, and it is also prone to material blockage. Utility Model Content

[0004] To address the aforementioned problems, this invention proposes a controllable thin-layer feeding device for finely crushed materials. This device can automatically realize the functions of thin-layer feeding and material control, providing an effective method for improving the efficiency and quality of material homogenization, detection, screening, and other processing steps.

[0005] Specifically, this utility model is implemented as follows: a hopper with a cover-like structure is installed above the conveying equipment to receive incoming materials; a spiral conveying roller is installed inside the hopper, arranged above it along the bottom opening direction of the hopper, to quickly and evenly spread the material entering the hopper along the roller body direction; an auxiliary feeding roller is installed below the hopper, arranged on one side below it along the bottom opening direction of the hopper; an interval feeding roller is installed below the hopper, arranged on the other side below it along the bottom opening direction of the hopper; the roller surface of the interval feeding roller is tangentially in contact with the auxiliary feeding roller, jointly covering the material dropping area below the hopper; several material receiving grooves parallel to the axis direction are provided on the surface of the interval feeding roller, and the material receiving grooves do not contact the auxiliary feeding roller; the conveying equipment is located below the interval feeding roller, used to convey the fine fragments falling from the material receiving grooves forward; the spiral conveying roller, auxiliary feeding roller, and interval feeding roller are directly connected by a driving device or driven by a transmission mechanism, which can drive their respective roller bodies to rotate around the axis.

[0006] The working principle of this utility model is as follows: the hopper (1) is designed as a material receiving area and a material distribution area. The incoming material is rapidly distributed along a straight line by the spiral conveyor roller (2). A material detection device (6) is provided at the end of the conveying of the screw conveyor (2) to detect the accumulation and processing of incoming materials at any time and to provide feedback signals to prevent the incoming materials from clogging the hopper. An interval feeding roller (4) and an auxiliary feeding roller (3) are set below the screw conveyor (2). Since the auxiliary feeding roller (3) has a smooth roller surface and the interval feeding roller (4) has several material troughs (7), when the smooth roller surface of the auxiliary feeding roller (3) contacts the roller surface of the interval feeding roller (4), a relatively sealed area is formed for the dropping hopper (1). The fine crushed material enters each material trough (7) in sequence as the interval feeding roller (4) rolls. The material entering the material trough (7) will not be blocked by the auxiliary feeding roller (3) and will pass smoothly through the auxiliary feeding roller (3), and then fall below. Therefore, with the cooperation of the interval feeding roller and the auxiliary feeding roller, the fine crushed material intermittently fills the material trough on the interval feeding roller (4) and falls with the rotation of the interval feeding roller (4). A conveying device (5) is set below. As the interval feeding roller (4) rotates, the incoming material is sprinkled from the roller groove onto the conveying device, forming a thin layer of loose material. The loose material is then spread out by the fast belt of the conveying device, making the material on the conveying device even thinner, thus realizing the function of thin material layer feeding. Moreover, the amount of material falling per unit time can be calculated based on the specifications and quantity of the material trough (7) and the rotation speed of the interval feeding roller (4). Therefore, relatively accurate material feeding control can be obtained by adjusting the rotation speed of the interval feeding roller (4).

[0007] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0008] (1) It can prevent material blockage and ensure continuous operation: The hopper is divided into a receiving area and a distributing area. With the help of the spiral conveyor roller, the incoming material is quickly distributed along a straight line, avoiding the accumulation and clumping of material in the receiving area. With the help of the material detection device, the material accumulation status and processing progress can be monitored in real time. The conveying rhythm can be adjusted in time through feedback signals, such as slowing down the incoming material or speeding up the distributing, to prevent hopper blockage from the source and ensure the continuous and stable operation of the entire system.

[0009] (2) To achieve thinning and uniform feeding of materials: When the interval feeding roller rotates, the material in the trough is directly sprinkled onto the conveying equipment below, forming a thin layer of loose material; the fast belt of the conveying equipment further spreads the loose material, making the material distributed more thinly and evenly on the belt surface, and finally realizing the function of thin material layer feeding. This can optimize the conditions of subsequent material processing, such as drying, screening, and mixing, and allow the material to have more sufficient contact with the processing medium such as hot air and screen, thereby improving processing efficiency and quality.

[0010] (3) By relying on the differentiated structure of the interval feeding roller and the auxiliary feeding roller, orderly intermittent feeding is achieved: the auxiliary feeding roller has a smooth roller surface, which forms a relatively sealed area when it contacts the roller surface of the interval feeding roller, which can prevent fine materials from leaking out from the gap between the two rollers or falling out in a disorderly manner, reducing material waste and environmental pollution; several material troughs on the interval feeding roller can accurately receive the material above, and the material will not be blocked by the auxiliary feeding roller after entering the material trough, but will fall down in sequence with the rotation of the interval feeding roller, realizing the directional conveying of fine materials with quantifiable indicators.

[0011] (4) The fine material rapid spreading device proposed in this invention has the characteristics of compact structure, good spreading effect and controllable spreading thickness. It provides a good solution for saving space in automated production lines and for achieving homogeneous control, material detection and uniform mixing of materials in automated production lines. It is of great significance for improving the product quality of subsequent process links, realizing refined product management and expanding the application of automated products. Attached Figure Description

[0012] Figure 1 : Schematic diagram of the overall structure of this utility model;

[0013] Figure 2 : Explosion-proof structural diagram of this utility model;

[0014] Figure 3 : A cross-sectional view of the present invention;

[0015] Figure 4 Schematic diagram of a screw conveyor roller conveying materials to the right-side distribution area;

[0016] Figure 5 Side sectional view of this utility model;

[0017] Figure 6 Detailed diagram of the positions of auxiliary feed rollers and interval feed rollers.

[0018] Figure label:

[0019] In the figure, there is a hopper (1), a spiral conveyor roller (2), an auxiliary feeding roller (3), an intermittent feeding roller (4), a conveying device (5), a material detection device (6), a material trough (7), and a sealing strip (8). Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Example 1, by Figure 1As shown, the lower part of the hopper 1 is provided with a spiral conveying roller 2, and the material detection device 6 is provided in the material distribution area at the end of the conveying of the spiral conveying roller 2; the outlet of the hopper 1 is provided with an auxiliary feeding roller 3 and an intermittent feeding roller 4; and a conveying device 5 is provided below the intermittent feeding roller 4.

[0022] Depend on Figure 2 As shown, the hopper 1 is designed with an L-shaped structure, dividing the hopper 1 into upper and lower parts. The upper part is the material receiving area, and the lower part is the material distributing area.

[0023] Depend on Figure 3 As shown, after the fine materials are fed into the discharge hopper 1, they will form a certain thickness of accumulation in the receiving area on the left. Using screw conveyor technology, the screw conveyor roller 2 rapidly spreads the fine materials passing through the collection hopper along the width direction of the material flow. Under the action of the screw conveyor, the material spreads rapidly along the conveying width direction, greatly reducing the thickness of the material accumulation. The screw conveyor roller 2 distributes the material axially, and the distributed material continuously fills the space between the auxiliary feeding roller 3 and the interval feeding roller 4. Through the gap between the auxiliary feeding roller 3 and the interval feeding roller 4, the material is squeezed and filled into the spaced troughs on the interval feeding roller 4. As the interval feeding roller 4 rotates, the material in the middle of the roller trough falls intermittently onto the conveying device 5 below. This ensures that the material thickness is controlled within the required thickness.

[0024] In this embodiment, the auxiliary feeding roller 3 and the intermittent feeding roller 4 rotate in the same direction to avoid material compression and blockage. This promotes smooth material filling into the groove of the intermittent feeding roller 4, preventing material agglomeration and blockage due to screwing and compression. Furthermore, the rotation of the auxiliary feeding roller 3 and the intermittent feeding roller 4 creates a certain disturbance in the material flow, preventing arching between fine materials and ensuring smooth discharge.

[0025] It should be noted that the specific drive structure of the spiral conveyor roller 2, the auxiliary feed roller 3, and the interval feed roller 4 is not described in detail in this embodiment. This is mainly because how to drive the roller body to rotate and how to configure the speed are existing technologies, and will not be elaborated on in this embodiment. They can be driven by a belt and a motor, or the drive control can be achieved by a transmission mechanism and a transmission belt.

[0026] When there is a large amount of material arriving at once, the screw conveyor roller 2 will send the undelivered material to the right end space to accumulate. At this time, the material detection device will detect the accumulated material and send a signal to the control system. The control system will adjust the conveying speed of the screw conveyor roller and the feeding speed of the material conveying equipment or issue an alarm to avoid excessive accumulation and compression of materials, which would affect the normal paving of materials.

[0027] In Example 2, based on Example 1, sealing strips are further installed on the two long sides of the discharge port of the hopper 1. The edges of the sealing strips contact the surfaces of the auxiliary feeding roller 3 and the interval feeding roller 4 to eliminate gaps and prevent material from overflowing from the hopper 1. The two sealing strips are inclined inwards relative to each other and are nested and bonded to the long edge of the discharge port of the hopper 1. The cross-section of the sealing strips is a thin sheet structure that gradually narrows towards the edge.

[0028] During use, such as Figure 5 , Figure 6 As shown, the sealing strip 8 can contact the auxiliary feeding roller 3 and the interval feeding roller 4, forming a sealing structure between the hopper 1 and the roller body to prevent material leakage. It also cleans up materials adsorbed or stuck to the roller body. The sealing strip can be made of wear-resistant materials, such as wear-resistant rubber, polyurethane rubber, or polyacrylate elastomer, and processed into a thin strip.

[0029] The compact, finely crushed material rapid spreading device in this embodiment can be arranged longitudinally or laterally along the conveying direction, and has excellent flexible production adaptability.

[0030] This invention is not limited to the above-described embodiments. Any structural changes or improvements made by anyone under the guidance of this invention, and any technical solutions that are the same as or similar to this invention, are within the protection scope of this invention.

Claims

1. A uniform thin-layer fabric spreading device suitable for finely crushed materials, characterized in that: It includes a discharge hopper (1), which is installed above the conveying equipment (5) in a hood-like structure for receiving incoming materials; The spiral conveyor roller (2) is installed inside the hopper (1) and is arranged above it along the bottom opening direction of the hopper (1) to quickly and evenly spread the material entering the hopper (1) along the direction of the roller body. The auxiliary feeding roller (3) is installed below the hopper (1) and is arranged on one side below it along the bottom opening direction of the hopper (1); An intermittent feeding roller (4) is installed below the hopper (1) and is arranged on the other side below it along the bottom opening direction of the hopper (1); the roller surface of the intermittent feeding roller (4) is in tangential contact with the auxiliary feeding roller (3) and together they cover the lower material dropping area of ​​the hopper (1); a number of material receiving grooves (7) parallel to the axis direction are provided on the surface of the intermittent feeding roller (4), and the material receiving grooves (7) do not contact the auxiliary feeding roller (3); The conveying device (5) is located below the interval feeding roller (4) and is used to convey the fine materials falling from the trough (7) forward; and the interval feeding roller (4) is directly connected to the drive device or driven by the transmission mechanism, and can drive each roller body to rotate around the axis.

2. A device for spreading a uniform thin layer of finely divided material according to claim 1, characterized in that: The hopper (1) is designed in an L-shape, dividing the hopper (1) into upper and lower parts. The upper part is the material receiving area, and the lower part is the material distribution area.

3. The uniform thin-layer fabric spreading device suitable for finely crushed materials according to claim 2, characterized in that: The lower part of the hopper (1) is equipped with a spiral conveyor roller (2), which is driven to rotate by a motor and a conveyor belt to transport the material in the distribution area from the left area to the right area.

4. A device for spreading a uniform thin layer of finely divided material according to claim 1, characterized in that: The gap between the auxiliary feeding roller (3) and the screw conveyor roller (2) is narrow or tangential. The material conveyed by the screw conveyor roller (2) is filled into the spaced material troughs on the spaced feeding roller (4) through the cooperation of the auxiliary feeding roller (3) and the spaced feeding roller (4). The material that does not enter the material trough is isolated by the auxiliary feeding roller (3) and cannot fall. Each material trough has the same size and specifications. Only the material that enters the material trough can pass smoothly through the auxiliary feeding roller (3) and be discharged.

5. A device for spreading a uniform thin layer of finely divided material according to claim 1, characterized in that: A material detection device (6) is provided on the inner side of the conveying end of the hopper (1) to detect the amount of material in the hopper (1).

6. A device for spreading a uniform thin layer of finely divided material according to claim 4, characterized in that: The auxiliary feeding roller (3) and the interval feeding roller (4) rotate in the same direction, which can promote the smooth filling of the material into the groove of the interval feeding roller (4) and prevent the material from clumping and blocking due to the squeezing. In addition, the rotation of the auxiliary feeding roller (3) and the interval feeding roller (4) has a certain disturbance effect in the material flow, which can prevent the material from being unable to be discharged smoothly due to the arching phenomenon formed between the fine materials.

7. A device for spreading a uniform thin layer of finely divided material according to claim 6, characterized in that: Sealing strips are installed on the two long sides of the discharge port of the hopper (1). The edges of the sealing strips are in contact with the surfaces of the auxiliary feeding roller (3) and the interval feeding roller (4) to eliminate gaps and prevent the material in the hopper (1) from overflowing.

8. A device for spreading a uniform thin layer of finely divided material according to claim 7, characterized in that: Two sealing strips are inclined inwards relative to each other, and the sealing strips are nested and bonded to the long edge of the discharge port of the discharge hopper (1). The cross-section of the sealing strip is a thin sheet structure that gradually narrows towards the edge.

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