Multi-channel blanking device and grinding system applying same

Abstract

A multi-channel discharger and a grinding system applying the same relate to the technical field of feeding devices, the multi-channel discharger comprises a shell and a material distribution structure in the shell, the material distribution structure comprises a transversely arranged buffer plate and a plurality of feeding channels arranged side by side on the lower side of the buffer plate, one side of the buffer plate is rotatably connected with the shell through a rotating shaft, and an elastic piece is further connected between the buffer plate and the shell; the cross sectional areas of the multiple feeding channels are gradually increased from top to bottom, and the multiple feeding channels are arranged in the rotating axis direction of the rotating shaft. Due to the design of the multiple feeding channels, the material flowability is improved, even if a certain channel is blocked, other channels can still maintain material flowing, the materials are transversely and evenly dispersed to all the feeding channels through reciprocating swing of the buffer plates under the reset action of the elastic pieces, a complex adjusting plate structure driven by a motor in the prior art is replaced, and the material conveying efficiency is improved. The device is simplified, meanwhile, the mechanical failure rate is remarkably reduced, it is ensured that a continuous and uniform material curtain is formed, and the sorting efficiency of the V-shaped powder concentrator is improved.

Description

Technical Field

[0001] This utility model relates to the field of feeding device technology, specifically a multi-channel feeder and a grinding system using the same. Background Technology

[0002] In the grinding system, when the feed chute, V-type classifier and roller press work together, the material is conveyed to the V-type classifier through the feed chute. The V-type classifier achieves efficient separation of fine powder and coarse particles through its dispersing function and separating airflow. Qualified fine powder is directly collected, while coarse powder enters the roller press for secondary extrusion and strengthening.

[0003] To alleviate the problems of material congestion in the discharge chute and uneven distribution when entering the V-type classifier, existing technologies have designed a material distribution structure inside the discharge chute. For example, a cement mill elevator discharge chute with uniform material distribution, as disclosed in patent publication number CN219647631U, is composed of multiple rectangular pipes with different angles connected in sequence. Through the graded channels in the upper and lower pipes and the independent adjusting plates (driven by a rotating motor) of the eight discharge channels at the end, the material is dispersed step by step to avoid congestion and form a uniform material curtain, thereby reducing the phenomenon of fine powder circulating back to the roller press with coarse powder.

[0004] However, in practical applications, it has been found that the complex structure of the design, such as the multi-section variable diameter channel and the adjustment plate driven by eight motors, leads to high manufacturing difficulty and significantly increased maintenance costs. In addition, the material discharge chute is usually located in a high-altitude / narrow area, and many electromechanical components are prone to failure during long-term operation, which restricts the actual economy and reliability. Utility Model Content

[0005] To address the technical problems existing in the background art, this utility model provides a multi-channel feeder and a grinding system using it.

[0006] The technical solution of this utility model is as follows:

[0007] A multi-channel feeder includes a housing and an internal material distribution structure. The material distribution structure includes a horizontally arranged buffer plate and multiple feeding channels arranged side by side on its lower side. One side of the buffer plate is rotatably connected to the housing via a rotating shaft, and an elastic element is also connected between the buffer plate and the housing. The cross-sectional area of ​​the multiple feeding channels gradually increases from top to bottom, and the multiple feeding channels are arranged along the rotation axis of the rotating shaft.

[0008] As one implementation method, the shell is a quadrangular frustum structure that runs vertically through the shell. Of its four sides, two opposite sides are isosceles trapezoids, and the other two opposite sides are rectangles. The lower part of the shell is provided with multiple partition plates, each partition plate dividing the lower part of the shell into multiple independent feeding channels.

[0009] Furthermore, the rotating shaft is parallel to the trapezoidal side of the housing, and both ends are connected to the inner wall of the housing via bearings.

[0010] Preferably, the elastic element is a spring, and the two ends of the spring are connected to the inner wall of the housing and the lower side of the buffer plate, respectively, and the angle between the spring and the buffer plate in the horizontal state is 30°-60°.

[0011] Furthermore, the shell wall thickness is 6mm-10mm, the partition plate thickness is 8mm-12mm, and the two side edges of the partition plate are connected to the inner wall of the shell.

[0012] To avoid interference between the buffer plate and the partition plate when the buffer plate swings, the vertical distance between the lower surface of the buffer plate and the inlet of the feeding channel is greater than the horizontal width of the buffer plate.

[0013] As one implementation method, the number of feeding channels is 4-8, and the entrance width of adjacent feeding channels is equal.

[0014] This utility model also provides a grinding system, including the multi-channel feeder described above, which is detachably installed between the feed chute and the V-type classifier.

[0015] The beneficial effects of this utility model are as follows:

[0016] First, the structural design of the feeding channels with the cross-sectional area gradually increasing from top to bottom improves material flow and effectively avoids material congestion; and the design of multiple feeding channels ensures that even if one feeding channel becomes congested, the other feeding channels can still maintain material flow.

[0017] Second, the material is buffered by the buffer plate, which prevents it from falling directly into a certain channel. The reciprocating swing of the buffer plate under the reset action of the elastic element disperses the material evenly to each feeding channel laterally. This replaces the complex adjustment plate structure that relies on motor drive in the existing technology. It simplifies the device and significantly reduces the mechanical failure rate, ensuring the formation of a continuous and uniform material curtain and improving the sorting efficiency of the V-type classifier.

[0018] Third, the entire material distribution process relies entirely on the mechanical balance between the material's own weight and the elastic force of the elastic component, requiring no external energy input. This reduces energy consumption and maintenance difficulty in high-altitude and confined environments, fundamentally solving the technical pain points of poor reliability and high maintenance costs of multiple electromechanical components in existing technologies. Attached Figure Description

[0019] In the attached diagram:

[0020] Figure 1 This is a schematic diagram illustrating the use of a multi-channel feeder in this embodiment;

[0021] Figure 2This is a frontal schematic diagram of a multi-channel feeder in this embodiment;

[0022] Figure 3 This is a side view of a multi-channel feeder in this embodiment;

[0023] Figure 4 This is a schematic diagram of the assembly of the buffer plate, rotating shaft and bearing in this embodiment;

[0024] The components represented by the various reference numerals in the diagram are:

[0025] 1. Feeding device; 11. Shell; 12. Divider plate; 13. Buffer plate; 14. Spring; 15. Rotating shaft; 16. Bearing; 2. Discharge chute; 3. V-type classifier. Detailed Implementation

[0026] Combination Figure 2 and Figure 3 This embodiment provides a multi-channel feeder (referred to as feeding device 1). The feeding device 1 includes a housing 11 and a material distribution structure inside it. The material distribution structure includes a horizontally arranged buffer plate 13 and a plurality of feeding channels arranged side by side on its lower side.

[0027] Specifically, one side of the buffer plate 13 is rotatably connected to the housing 11 via a rotating shaft 15, and an elastic element is also connected between the buffer plate 13 and the housing 11. The buffer plate 13 can swing around the rotating shaft 15 under the impact of the material and be reset by the elastic element. The cross-sectional area of ​​the multiple feeding channels gradually expands from top to bottom to form a conical structure, and the multiple feeding channels are arranged along the rotation axis of the rotating shaft 15.

[0028] When in use, the material falls and impacts the buffer plate 13. The buffer plate 13 cushions the material, preventing it from falling directly into a certain feeding channel. The design of multiple feeding channels ensures that even if one feeding channel becomes congested, the other feeding channels can still maintain the flow of material. Furthermore, the gradually expanding feeding channels can reduce the frictional resistance between the material and the wall, further preventing congestion caused by material accumulation.

[0029] Meanwhile, during the swinging process, the buffer plate 13 can disperse the material laterally and, together with the elastic element, form a reciprocating motion, allowing the material to naturally slide into different feeding channels. This replaces the motor-driven adjustment plate in the prior art, simplifies the structure, and reduces the failure rate.

[0030] This material distribution structure relies solely on the material's own weight and the elastic force of the elastic components to achieve movement, eliminating the need for external energy or complex control, thus reducing energy consumption and maintenance costs.

[0031] The vertical distance between the lower surface of the buffer plate 13 and the inlet of the feeding channel is greater than the horizontal width of the buffer plate 13. The sufficient distance ensures that the buffer plate 13 will not collide with the partition plate 12 when it swings, thus avoiding mechanical jamming.

[0032] The vertical distance between the lower surface of the buffer plate 13 and the inlet of the feeding channel is not less than 1.5 times the horizontal width of the buffer plate 13, so that the material has enough space to spread laterally before entering the feeding channel and reduce congestion at the inlet of the feeding channel.

[0033] Specifically, the shell 11 is a frustum structure that runs vertically through the shell. Of its four sides, two opposite sides are isosceles trapezoids and the other two opposite sides are rectangles. The lower part of the shell 11 is provided with multiple partition plates 12, which divide the lower part of the shell 11 into multiple independent feeding channels.

[0034] The truncated quadrangular cross section of the shell 11 provides symmetrical support to meet the mechanical requirements of high-altitude installation (it is easier to connect with rectangular pipes compared to a circular cross section), and the inclined angle of the isosceles trapezoidal sidewalls can guide the material to be dispersed to both sides, and the swing of the buffer plate 13 further evenly distributes the material.

[0035] Both the shell 11 and the partition plate 12 are made of steel plates. To balance economy and lightweight, the shell 11 is made of high-strength low-alloy steel, and the partition plate 12 is made of wear-resistant high-carbon steel with surface hardening treatment (such as quenching). The wall thickness of the shell 11 is 6mm-10mm, and the thickness of the partition plate 12 is 8mm-12mm, so as to reduce weight while ensuring structural strength and facilitate high-altitude installation and maintenance.

[0036] The two sides of the partition plate 12 are connected to the inner wall of the shell 11, and preferably the two sides of the partition plate 12 are welded to the inner wall of the shell 11. The partition plate 12 is made of 8mm-12mm thick steel plate, which can resist the impact deformation of materials and ensure the stability of the feeding channel shape. The welding seal can prevent the mixing of materials between adjacent feeding channels and ensure the accuracy of material distribution. At the same time, the thickness of the partition plate 12 is moderate, which can take into account both welding process and material cost.

[0037] Combination Figure 4 The rotating shaft 15 is parallel to the trapezoidal side of the housing 11. Both ends of the rotating shaft 15 are connected to the inner wall of the housing 11 through bearings 16. The two sides of the partition plate 12 near the rectangular side of the housing 11 are in contact with the inner wall of the rectangular side of the housing 11. During installation, the bearings 16 at both ends of the rotating shaft 15 are installed, and then the outer rings of the bearings 16 at both ends are welded and fixed to the two opposite rectangular sides of the inner wall of the housing 11, respectively. Alternatively, the two bearings 16 are installed in small bearing seats, and then the rotating shaft 15 is installed between the two bearings 16. Finally, the bearing seats are welded and fixed to the two opposite rectangular sides of the inner wall of the housing 11. The bearings 16 are bearings with sealing performance, such as double-sided rubber contact sealed deep groove ball bearings. Compared with hinges, which are prone to dust intrusion and jamming, this extends the service life.

[0038] The elastic element is a spring 14. The two ends of the spring 14 are connected to the inner wall of the trapezoidal side of the housing 11 on the lower side of the buffer plate 13 and the side where the rotating shaft 15 is located, respectively. The angle between the spring 14 and the buffer plate 13 in the horizontal state is 30°-60°. Two springs can be arranged relatively parallel to each other. When the buffer plate 13 swings, the inclined spring 14 bears both compression and torsional forces, provides nonlinear restoring force, enhances the material dispersion effect, and the 30°-60° angle can avoid axial overload of the spring 14, reduce the risk of plastic deformation during long-term use, and the material of the spring 14 is preferably high carbon spring steel.

[0039] In typical scenarios, the number of feeding channels is 4-8 (e.g.) Figure 2 The number of feeding channels is 5, and the entrance width of adjacent feeding channels is equal. Its 4-8 feeding channels cover the typical feed width of the V-type classifier 3, ensuring that the material curtain coverage area matches the sorting efficiency. The equidistant entrance design makes the material distribution of each feeding channel tend to be consistent, reducing the circulation of fine powder caused by material deviation.

[0040] This embodiment also provides a grinding system, including the multi-channel feeder described above. The feeding device 1 is detachably installed between the feed chute 2 and the V-type classifier 3 (e.g., Figure 1 For example, the multi-channel feeding device 1 is detachably installed between the discharge chute 2 and the V-type classifier 3 via a flange.

Claims

1. A multi-channel feeder, characterized in that, Includes the shell (11) and its internal material distribution structure; The material distribution structure includes a horizontally arranged buffer plate (13) and multiple feeding channels arranged side by side on its lower side; One side of the buffer plate (13) is rotatably connected to the housing (11) via a rotating shaft (15), and an elastic element is also connected between the buffer plate (13) and the housing (11); The cross-sectional area of ​​the multiple feeding channels gradually increases from top to bottom, and the multiple feeding channels are arranged along the rotation axis of the rotating shaft (15).

2. The multi-channel feeder as described in claim 1, characterized in that, The shell (11) is a frustum structure that runs vertically through the top and bottom. Its two opposite sides are isosceles trapezoids, and its other two opposite sides are rectangles. The lower part of the housing (11) is provided with multiple partition plates (12) at intervals, and each partition plate (12) divides the lower part of the housing (11) into multiple independent feeding channels.

3. A multi-channel feeder as described in claim 1, characterized in that, The rotating shaft (15) is parallel to the trapezoidal side of the housing (11), and both ends are connected to the inner wall of the housing (11) through bearings (16).

4. A multi-channel feeder as described in claim 1, characterized in that, The elastic element is a spring (14).

5. A multi-channel feeder as described in claim 4, characterized in that, The two ends of the spring (14) are connected to the inner wall of the housing (11) and the lower side of the buffer plate (13) respectively, and the angle between the spring (14) and the buffer plate (13) in the horizontal state is 30°-60°.

6. A multi-channel feeder as described in claim 2, characterized in that, The wall thickness of the shell (11) is 6mm-10mm.

7. A multi-channel feeder as described in claim 2, characterized in that, The thickness of the partition plate (12) is 8mm-12mm, and its two side edges are connected to the inner wall of the shell (11).

8. A multi-channel feeder as described in claim 1, characterized in that, The vertical distance between the lower surface of the buffer plate (13) and the inlet of the feeding channel is greater than the horizontal width of the buffer plate (13).

9. A multi-channel feeder as described in claim 2, characterized in that, The number of feeding channels is 4-8, and the entrance width of adjacent feeding channels is equal.

10. A grinding system, characterized in that, Includes a multi-channel feeder as described in any one of claims 1-9, which is detachably installed between the feed chute (2) and the V-type classifier (3).

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