Anti-screen clogging vibrating screen machine

Abstract

The utility model relates to a vibrating screen machine of preventing screen mesh from blocking, including fixed bolster and vibration frame, and is connected through elastic support between fixed bolster and vibration frame, and vibration frame is equipped with screen mesh, and vibration frame is equipped with vibration body, and the below of screen mesh is equipped with adjustable knock mechanism, adjustable knock mechanism includes knock bolster and distance adjusting mechanism, and is equipped with vibration motor on knock bolster, and distance adjusting mechanism includes the positioning groove of symmetrical setting inside both sides of vibration frame, and knock bolster's both ends each is equipped with an adjusting plate, and adjusting plate is located inside corresponding one side positioning groove and divides the inside portion of positioning groove into upper layer and lower layer, and each set of air rubber spring is equipped with air pipe, and the outer end of air pipe is connected to gas holder, and the distance between knock bolster and screen mesh is controlled through adjusting the air pressure in air spring, the utility model discloses can adjust the knock mechanism and adapt to different characteristic material of the beat amplitude and frequency of screen mesh.

Description

Technical Field

[0001] This utility model relates to the field of vibrating screen machines, specifically a vibrating screen machine that prevents screen clogging. Background Technology

[0002] Vibrating screens are essential equipment in the mining and mineral processing industries. When used with slurries of a certain viscosity, existing screens are prone to screen clogging after a period of operation, especially in the lower half of the screen, where material tends to accumulate and cause mesh blockage. When the blockage is severe, the screen cannot perform screening work normally, greatly reducing screening efficiency and quality. Therefore, it is necessary to design a screen that is clogging-resistant. Summary of the Invention

[0003] The purpose of this invention is to solve the problems existing in the prior art and to provide a vibrating screen machine that prevents screen blockage.

[0004] The specific solution of this utility model is as follows: a vibrating screen machine for preventing screen blockage, including a fixed support and a vibrating frame. The fixed support and the vibrating frame are connected by an elastic support member. A screen is installed inside the vibrating frame, and a vibrating body is installed on the vibrating frame. An adjustable striking mechanism is installed below the screen. The adjustable striking mechanism includes a striking bracket and a distance adjustment mechanism. A vibrating motor is installed on the striking bracket. The distance adjustment mechanism includes positioning grooves symmetrically arranged on both sides inside the vibrating frame. An adjustment plate is installed at each end of the striking bracket. The adjustment plate is located inside the positioning groove on the corresponding side and divides the inside of the positioning groove into an upper layer and a lower layer. Each upper layer and lower layer is equipped with a set of air rubber springs. Each set of air rubber springs is equipped with an air pipe. The outer end of the air pipe is connected to an air storage tank. The distance between the striking bracket and the screen is controlled by adjusting the air pressure inside the air spring.

[0005] Furthermore, the striking bracket is integrally bent and formed, with folded edges on both sides, and polyurethane protective strips are installed on the folded edges for striking the screen.

[0006] Furthermore, the striking mechanism is located in the middle of each sieve.

[0007] Furthermore, the angle between the screen surface and the horizontal plane is 15°-25°.

[0008] Furthermore, the fixed support is equipped with a feeder at the upper end, a hopper A is provided below the screen, and a hopper B is provided at the discharge end of the screen. Hopper A is used to collect under-screen material, and hopper B is used to collect over-screen material.

[0009] The present invention has the following advantages: 1. By setting a knocking mechanism to knock the clogged screen in real time, the material blocking the screen holes is shaken out, thereby preventing clogging; 2. By adjusting the mechanism, the distance between the knocking support of the knocking mechanism and the screen surface can be adjusted, thereby adjusting the knocking amplitude and frequency of the screen according to different material characteristics. Attached Figure Description

[0010] Figure 1 This is a perspective view of the present invention;

[0011] Figure 2 This is a top view of the present invention;

[0012] Figure 3 yes Figure 2 AA view;

[0013] Figure 4 yes Figure 2 BB view;

[0014] Figure 5 yes Figure 4 CC view;

[0015] In the diagram: 1. Fixed bracket; 2. Vibrating frame; 3. Screen; 4. Hopper A; 5. Hopper B; 6. Vibrating body; 7. Striking mechanism; 71. Positioning groove; 72. Striking bracket; 73. Air rubber spring; 74. Vibrating motor; 75. Adjusting plate. Detailed Implementation

[0016] See Figure 1-5 This embodiment is a vibrating screen machine for preventing screen blockage, including a fixed support 1 and a vibrating frame 2. The fixed support 1 and the vibrating frame 2 are connected by an elastic support member. The vibrating frame 2 contains a screen 3 and a vibrating body 6. An adjustable striking mechanism 7 is installed below the screen 3. The adjustable striking mechanism 7 includes a striking bracket 72 and a distance adjustment mechanism. A vibrating motor 74 is installed on the striking bracket 72. The distance adjustment mechanism includes positioning grooves 71 symmetrically arranged on both sides inside the vibrating frame 2. An adjustment plate 75 is installed at each end of the striking bracket 72. The adjustment plate 75 is located inside the corresponding positioning groove 71 and divides the inside of the positioning groove into an upper layer and a lower layer. Each upper layer and lower layer is equipped with a set of air rubber springs 73. Each set of air rubber springs 73 is equipped with an air pipe. The outer end of the air pipe is connected to an air storage tank. The distance between the striking bracket and the screen is controlled by adjusting the air pressure inside the air spring.

[0017] Furthermore, the striking bracket 72 is integrally bent and formed, with folded edges on both sides of the side facing the screen 3, and polyurethane protective strips are installed on the folded edges for striking the screen. Furthermore, the striking mechanism 7 is located in the middle of each screen 3. Furthermore, the angle between the screen surface of the screen 3 and the horizontal plane is 15°-25°. Furthermore, the fixed bracket 1 has a feeder at its upper end, a hopper A4 located below the screen 3, and a hopper B5 corresponding to the discharge end of the screen 3. Hopper A4 is used to collect undersize material, and hopper B5 is used to collect oversize material. The working principle of this utility model is as follows: The slurry flows to the top of the screen 3 through the feeder. The vibrating body 6 drives the entire vibrating frame 2 and the screen 3 to vibrate. The slurry flows downstream along the screen 3 and is screened through the screen 3. At the same time, the vibrating motor 74 of the striking mechanism 7 continuously or intermittently drives the striking support 72 to strike the screen 3 at high frequency to prevent the screen 3 from clogging. The undersize material passes through the screen 3 and is guided to the subsequent process through the hopper A4. The oversize material flows from the end of the screen 3 into the hopper B5 and is guided to the subsequent process. Before starting work, the distance between the striking support 72 and the screen 3 is pre-adjusted according to the viscosity and other characteristics of the slurry. Specifically, to increase the striking frequency and amplitude, the lower air rubber spring 73 is pressurized by inflating it, while the upper air rubber spring 73 is depressurized or remains unchanged, thus reducing the distance between the striking support 72 and the screen 3. To decrease the striking frequency and amplitude, the upper air rubber spring 73 is pressurized by inflating it, while the lower air rubber spring 73 is depressurized or remains unchanged, thus moving the striking support 72 away from the screen 3. When the air pressure inside the air rubber spring increases, its cross-sectional area decreases and its height increases; when the air pressure decreases, its cross-sectional area increases and its height decreases. This principle is used to adjust the height of the regulating plate, thereby changing the distance between the striking support and the screen. Adjustments can also be made during the operation of the vibrating screen according to actual needs. For example, if the screen 3 becomes clogged much faster than the striking mechanism 7 cleans, and the clogged area becomes larger, the distance between the striking support 72 and the screen 3 is adjusted accordingly, and vice versa. This adjustment continues until the clogging speed and cleaning speed reach equilibrium, allowing the vibrating screen to maintain normal operation.

[0018] The air pipe is equipped with a valve assembly. The main valve is connected to a tee, which is then connected to two triplet units. From the two triplet units, two manifolds are connected to each manifold. Each manifold is equipped with two solenoid valves, which are connected to the inlet of two air tanks. The outlet of the air tanks is connected to a pressure reducing valve. Finally, the two air tanks are connected to the upper and lower air rubber springs, respectively. Since the gas enters the air rubber springs from the air tanks, they can operate stably without the problem of insufficient air pressure.

Claims

1. A vibrating screen for preventing screen clogging, comprising a fixed support and a vibrating frame, wherein the fixed support and the vibrating frame are connected by an elastic support member, an inclined screen is installed inside the vibrating frame, and a vibrating body is mounted on the vibrating frame, characterized in that: An adjustable striking mechanism is installed below the screen. The adjustable striking mechanism includes a striking bracket and a distance adjustment mechanism. A vibration motor is installed on the striking bracket. The distance adjustment mechanism includes positioning slots symmetrically arranged on both sides inside the vibration frame. An adjustment plate is installed at each end of the striking bracket. The adjustment plate is located inside the corresponding positioning slot and divides the inside of the positioning slot into an upper layer and a lower layer. Each upper and lower layer is equipped with a set of air rubber springs. Each set of air rubber springs is equipped with an air pipe. The outer end of the air pipe is connected to an air tank. The distance between the striking bracket and the screen is controlled by adjusting the air pressure inside the air spring.

2. The vibrating screen machine for preventing screen clogging according to claim 1, characterized in that: The striking bracket is integrally bent and formed, with folded edges on both sides, and polyurethane protective strips are installed on the folded edges for striking the screen.

3. A vibrating screen for preventing screen clogging according to claim 1, characterized in that: The striking mechanism is located in the middle of each sieve.

4. A vibrating screen for preventing screen clogging according to claim 3, characterized in that: The angle between the screen surface and the horizontal plane is 15°-25°.

5. A vibrating screen for preventing screen clogging according to claim 1, characterized in that: The fixed support is equipped with a feeder at the upper end, and a hopper A is provided below the screen. A hopper B is provided at the discharge end of the screen. Hopper A is used to collect under-screen material, and hopper B is used to collect over-screen material.

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