Efficient and uniform feeding structure of large vibrating screen

Abstract

The utility model discloses an efficient and uniform feeding structure of a large vibrating screen, which comprises a screen box feeding extension plate arranged at a feeding port of the vibrating screen, a material stirring mechanism is arranged on the screen box feeding extension plate, the material stirring mechanism comprises a drum-shaped roller body, the material stirring roller body is arranged on a transmission shaft, the transmission shaft is arranged on the corresponding screen box feeding extension plate, and the drum-shaped roller body is arranged on the transmission shaft. The transmission shaft is connected with a motor through a coupler. According to the utility model, in the material screening production process of the vibrating screen, materials falling into the feeding hole of the large vibrating screen from a belt conveyor are uniformly spread to the upper screen surface of the vibrating screen through the material shifting mechanism, so that the impact of the materials on the screen mesh of the large vibrating screen is greatly reduced; meanwhile, materials input into the feeding port of the vibrating screen from the belt conveyor can be evenly distributed on the screen cloth, uneven accumulation of the materials in the vibrating screen is prevented, the screening effect of the vibrating screen is improved, and meanwhile the service life of the screen cloth of the vibrating screen is prolonged.

Description

Technical Field

[0001] This utility model relates to a device for separating materials according to their particle size—a vibrating screen, and particularly to a high-efficiency and uniform feeding structure for a large vibrating screen. Background Technology

[0002] Vibrating screens are commonly used for material separation in industries such as mining, chemicals, and building materials. For small vibrating screens, the material is directly fed into the screen through the inlet, and then vibrated by the screen's vibrator to gradually classify the material according to its particle size, achieving the purpose of material separation. However, with the continuous emergence of large-scale mines and the increasing hourly output, the amount of material entering the vibrating screen at one time is also increasing. Therefore, the material diversion effect at the inlet of large vibrating screens must be fully considered; otherwise, material accumulation and displacement will seriously affect the screening effect of the vibrating screen and the service life of the screen and screen mesh. At the same time, for large vibrating screens, the distance between the material drop point at the inlet and the screen mesh is also increased, which increases the impact of the material on the screen mesh, seriously affecting the service life of the screen mesh below the inlet and thus reducing the overall service life of the screen mesh. Summary of the Invention

[0003] The purpose of this utility model is to provide a high-efficiency and uniform feeding structure for a large vibrating screen, which prevents uneven accumulation of materials in the vibrating screen, improves the screening effect of the vibrating screen, and extends the service life of the vibrating screen mesh.

[0004] The objective of this utility model is achieved through the following means:

[0005] A high-efficiency and uniform feeding structure for a large vibrating screen includes a screen box feed extension plate installed at the screen inlet, and a feeding mechanism installed on the screen box feed extension plate. The feeding mechanism includes a drum-shaped roller body, which is mounted on a drive shaft. The drive shaft is mounted on the corresponding screen box feed extension plate and is connected to a motor via a coupling.

[0006] The above-mentioned large vibrating screen has a high-efficiency and uniform feeding structure, in which the drive shaft is mounted on the feed extension plate of the screen box via bearings.

[0007] The above-mentioned large vibrating screen has a high-efficiency and uniform feeding structure. The drive shaft end is fixed with a drive shaft fixing plate, and the drum-shaped feeding roller is fixed to the drive shaft fixing plate by bolts. That is, both ends of the drum-shaped feeding roller are fixed to the corresponding drive shaft fixing plates by bolts, and then installed on the screen box feed extension plates on both sides of the screen box through the corresponding drive shaft.

[0008] Compared with the prior art, the present invention has the following technical effects:

[0009] This invention enables a vibrating screen to evenly distribute material falling from the conveyor belt into the feed inlet of a large vibrating screen onto the upper screen surface during the material screening process via a material feeding mechanism. This significantly reduces the impact of the material on the screen mesh and ensures that the material entering the vibrating screen from the conveyor belt is evenly distributed on the screen mesh, preventing uneven accumulation of material inside the vibrating screen, improving the screening effect, and extending the service life of the screen mesh. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 for Figure 1 The left view.

[0012] Figure 3 This is a schematic diagram of the material feeding mechanism of this utility model. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0014] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0015] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0016] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0017] The specific structure of this utility model is combined with the appendix. Figure 1 , Figure 2 and 3 Describe it in detail.

[0018] like Figure 1 , Figure 2 and Figure 3 As shown, a high-efficiency and uniform feeding structure for a large vibrating screen includes a screen box feed extension plate 8 set at the feed inlet of the vibrating screen, and a feeding mechanism 1 set on the screen box feed extension plate. The feeding mechanism includes a drum-shaped roller body 7, which is mounted on a transmission shaft 5. The transmission shaft is mounted on the corresponding screen box feed extension plate, and the transmission shaft is connected to a motor through a coupling 3. The motor is a variable frequency motor 4.

[0019] The material feeding mechanism 1 described in this utility model refers to a material distribution mechanism designed and installed according to the internal dimensions of the vibrating screen. Different models of vibrating screen housings must be matched with the material feeding mechanism 1.

[0020] The vibrating screen body 2 of this utility model is the main equipment for material screening and the main component of the vibrating screen. A material feeding mechanism 1 is installed on it. It is welded from low-carbon steel 16Mn material with excellent weldability.

[0021] The large vibrating screen of this utility model has a high-efficiency and uniform feeding structure, in which the transmission shaft is mounted on the feed extension plate of the screen box via bearing 6.

[0022] The large vibrating screen high-efficiency and uniform feeding structure of this utility model has a drive shaft fixing plate 9 fixed at the end of the drive shaft, and the drum-shaped feeding roller is fixed to the drive shaft fixing plate 9 by bolts. That is, both ends of the drum-shaped feeding roller are fixed to the corresponding drive shaft fixing plates by bolts, and then installed on the screen box feeding extension plates on both sides of the screen box through the corresponding drive shaft.

[0023] like Figure 2 As shown, the drive shaft of the feeding mechanism is connected to the variable frequency motor 4 via coupling 3. Coupling 3 is the power transmission mechanism connecting the variable frequency motor 4 and the drive shaft 5. It enables the variable frequency motor 4 to drive the drive shaft 5 to rotate. The variable frequency motor 4 is the power source of the feeding mechanism 1. Its normal rotation drives the drive shaft 5 to rotate via coupling 3, thus enabling the feeding roller 7 to work. The drive shaft 5 is the rotational power mechanism of the feeding mechanism 1. Its rotation drives the feeding roller 7 to work. The bearing 6 is the supporting rotation mechanism for the drive shaft 5 in the feeding mechanism 1. The bearings installed on both sides of the drive shaft 5 rotate normally under its support.

[0024] The feeding roller 7 described in this utility model is the feeding mechanism in the feeding mechanism 1. Designed and manufactured according to the dimensions of the vibrating screen box, it is arranged in a drum shape along both sides of the center of the vibrating screen box and rotates at a uniform speed with the rotation of the drive shaft. The drum-shaped feeding roller is fixed to the drive shaft fixing plate by bolts. When the drum-shaped feeding roller is excessively worn, it can be replaced by removing the bolts. The drum-shaped feeding roller is welded from wear-resistant alloy steel rods.

[0025] The main technical innovations of this utility model are:

[0026] 1. Design a new type of large vibrating screen box structure. Extend the feed inlet of the large vibrating screen upward and forward according to the model size to form a screen box feed extension plate 8. At the same time, add replaceable lining plates to the extended part of the screen box, which will extend the service life of this part and increase the structural strength of the box to ensure the normal operation of the feeding mechanism.

[0027] 2. A material feeding mechanism 1 is installed at the feed inlet of the large vibrating screen. The material feeding mechanism includes a drum-shaped feeding roller 7, a drive shaft 5, a bearing 6, a bearing seat, a variable frequency motor 4, etc. The material falling from the belt conveyor into the feed inlet of the large vibrating screen no longer falls directly onto the upper screen of the vibrating screen, but first falls onto the drum-shaped feeding roller installed above the screen. The uniformly rotating drum-shaped feeding roller evenly distributes the concentrated material falling from the belt conveyor onto the upper screen surface of the vibrating screen. This reduces the impact of the material on the screen and evenly distributes the material to be screened onto the screen surface to facilitate material screening.

[0028] 3. The drum-shaped feeding roller is welded from wear-resistant alloy steel bars and rotates at a uniform speed with the rotation of the drive shaft. The drum-shaped feeding roller is fixed to the drive shaft fixing plate 9 by bolts. When the drum-shaped feeding roller is excessively worn, it can be replaced by removing the bolts.

[0029] This invention significantly reduces the impact of materials on the screen mesh during the material screening process, while ensuring that the material fed from the belt conveyor into the screen mesh is evenly distributed on the screen mesh, preventing uneven accumulation of materials inside the screen, improving the screening effect, and extending the service life of the screen mesh.

[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. A high-efficiency and uniform feeding structure for a large vibrating screen, characterized in that: The screen box feed extension plate (8) is provided at the feed inlet of the vibrating screen, and a feeding mechanism (1) is provided on the screen box feed extension plate. The feeding mechanism includes a drum-shaped roller (7), which is mounted on a transmission shaft (5). The transmission shaft is mounted on the corresponding screen box feed extension plate and is connected to a motor through a coupling.

2. The high-efficiency and uniform feeding structure of the large vibrating screen according to claim 1, characterized in that: The drive shaft is mounted on the feed extension plate of the screen box via a bearing (6).

3. The high-efficiency and uniform feeding structure of the large vibrating screen according to claim 1, characterized in that: The transmission shaft end is fixed with a transmission shaft fixing plate (9), and the drum-shaped feeding roller is fixed to the transmission shaft fixing plate (9) by bolts. That is, both ends of the drum-shaped feeding roller are fixed to the corresponding end of the transmission shaft fixing plate by bolts, and then installed on the screen box feed extension plate on both sides of the screen box by the corresponding transmission shaft.

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