Multi-layer vibrating screen

Abstract

The utility model discloses a multi-layer type vibrating screen which comprises a main body unit, a vibrating screen body and a vibrating screen body, the main body unit comprises a base and a mounting frame matched with the base, a processing box is arranged in an inner cavity of the mounting frame, and a feeding port is formed in the top end of the processing box; the screening unit comprises a first screen, a second screen and a third screen which are fixedly installed in an inner cavity of the processing box, materials enter the processing box through the feeding port, under driving of the transmission structure, the rotating rod rotates in a reciprocating mode to enable the processing box to swing left and right, and the materials slide along with the processing box and sequentially pass through the three layers of screens to achieve multi-stage screening; vibration of the screen is enhanced in the swinging process, the screening efficiency is improved, after screening, the discharging openings are sequentially opened, the treatment box is inclined, discharging is conducted through gravity, and the problems that single-particle-size grading can be achieved only through single-screen configuration, multiple times of screening are needed for materials with the multi-particle-size requirement, time and cost are increased, and the screening efficiency is reduced are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vibrating screens, in particular to a multi-layer vibrating screen. Background Art

[0002] A vibrating screen works by using the reciprocating spiral vibration generated by a vibrator. The upper rotating weight of the vibrator causes the screen surface to produce a planar gyratory vibration, while the lower rotating weight causes the screen surface to produce a conical gyratory vibration. The combined effect is to make the screen surface produce a compound spiral vibration. Its vibration trajectory is a complex space curve. The projection of this curve on the horizontal plane is a circle, and the projection on the vertical plane is an ellipse. By adjusting the exciting force of the upper and lower rotating weights, the amplitude can be changed. By adjusting the spatial phase angle of the upper and lower weights, the curve shape of the screen surface movement trajectory can be changed and the movement trajectory of the material on the screen surface can be changed.

[0003] Existing vibrating screen designs usually have a limitation that they often only have one screen for screening operations. This design means that in a single continuous screening process, the vibrating screen can only screen the material for a single particle size. Since only one particle size can be screened at a time, for materials that require multiple particle size classifications, the screening process needs to be repeated multiple times, which undoubtedly increases the screening time and cost and reduces the overall screening efficiency. Summary of the Utility Model

[0004] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract and the name of the utility model of this application, to avoid obscuring the purpose of this part, the abstract, and the name of the utility model. However, such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the problems existing in the above-mentioned existing multi-layer vibrating screen, the present utility model is proposed.

[0006] Therefore, the purpose of the present utility model is to provide a multi-layer vibrating screen, which is suitable for solving the problem that a single screen configuration can only achieve a single particle size classification, and materials with multi-particle size requirements need to be screened multiple times, increasing time and cost and reducing screening efficiency.

[0007] To solve the above technical problems, the present utility model provides the following technical solutions: A multi-layer vibrating screen, comprising:

[0008] A main body unit, which includes a base and a mounting frame that is mounted to match the base. A processing box is provided in the inner cavity of the mounting frame, and a feeding port is provided at the top of the processing box;

[0009] The screening unit includes a first screen, a second screen, and a third screen fixedly installed in the inner cavity of the processing box. The first screen, the second screen, and the third screen are all inclined. The inclination directions of the first screen and the third screen are the same, and the inclination directions of the first screen and the second screen are opposite. Rotating rods are rotatably connected to both sides of the processing box. One end of the two groups of rotating rods penetrates through the side wall of the mounting frame, and the rotating rods are rotatably connected to the mounting frame. A transmission structure is provided at the top of the mounting frame.

[0010] As a preferred solution of the multi-layer vibrating screen of the present invention, wherein: the transmission structure includes a double-shaft motor fixedly installed at the top of the mounting frame. Second transmission wheels are fixedly installed on both sides of the double-shaft motor. First transmission wheels are provided on both sides of the mounting frame, and the side walls of the two groups of first transmission wheels are fixedly connected to one end of the two groups of rotating rods. Transmission belts are sleeved on the outer surfaces of the two groups of first transmission wheels and the two groups of second transmission wheels. Support plates are symmetrically installed at the top of the mounting frame, and the support plates are rotatably connected to the output shaft of the double-shaft motor.

[0011] As a preferred solution of the multi-layer vibrating screen of the present invention, wherein: the pore sizes of the first screen, the second screen, and the third screen gradually decrease for multi-stage screening.

[0012] As a preferred solution of the multi-layer vibrating screen of the present invention, wherein: a first discharge port is provided on the side wall of the processing box and is located above the first screen. A second discharge port is provided on the side of the base away from the first discharge port and is located between the first screen and the second screen. A third discharge port is provided on the side of the base close to the first discharge port and is located between the second screen and the third screen. A fourth discharge port is provided on the side of the base away from the third discharge port, and the fourth discharge port is located below the third screen.

[0013] As a preferred solution of the multi-layer vibrating screen of the present invention, wherein: the first screen, the second screen, and the third screen are all made of metal wires.

[0014] As a preferred solution of the multi-layer vibrating screen of the present invention, wherein: the feed port is located at the top of the side with a higher horizontal position of the first screen.

[0015] The beneficial effects of the present invention: Materials enter the processing box through the feed port. Driven by the transmission structure, the rotating rods rotate reciprocally to make the processing box swing left and right. The materials slide accordingly and pass through the three-layer screen in sequence to achieve multi-stage screening. The swinging process enhances the vibration of the screen and improves the screening efficiency. After screening, the discharge ports are opened in sequence, and the processing box is tilted to discharge materials by gravity, solving the problem that a single-screen configuration can only achieve single-grain size classification, and materials with multi-grain size requirements need to be screened multiple times, increasing time and cost and reducing the screening efficiency. Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings. Among them:

[0017] Figure 1 is a schematic diagram of the overall structure of a multi-layer vibrating screen proposed by the present utility model;

[0018] Figure 2 is a schematic diagram of the side structure of the treatment box of a multi-layer vibrating screen proposed by the present utility model;

[0019] Figure 3 is a schematic diagram of the internal structure of the treatment box of a multi-layer vibrating screen proposed by the present utility model.

[0020] Brief Description of the Drawings: 100, main body unit; 101, base; 102, mounting frame; 103, treatment box; 104, feed inlet; 200, screening unit; 201, rotating rod; 202, first transmission wheel; 203, dual-shaft motor; 204, second transmission wheel; 205, transmission belt; 206, first discharge port; 207, second discharge port; 208, third discharge port; 209, fourth discharge port; 210, first screen; 211, second screen; 212, third screen; 213, support plate. Detailed Embodiments

[0021] In order to make the above-mentioned objects, features, and advantages of the present utility model more obvious and understandable, the following will give a detailed description of the specific embodiments of the present utility model with reference to the drawings in the specification.

[0022] In the following description, many specific details are set forth to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0023] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that can be included in at least one implementation manner of the present utility model. The appearances of "in one embodiment" in different places in this specification do not all refer to the same embodiment, nor are they separate or selectively exclusive embodiments from other embodiments.

[0024] Next, the present utility model will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present utility model in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally not in accordance with the general scale, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model herein. In addition, the three-dimensional spatial dimensions including length, width, and depth should be included in actual production.

[0025] Referring to Figures 1 - 3 , an embodiment of the present utility model provides a multi-layer vibrating screen, which includes a main body unit 100 and a screening unit 200;

[0026] Among them, the main body unit 100 includes a base 101 and a mounting frame 102 that is mounted in a matching manner with the base 101. A processing box 103 is provided in the inner cavity of the mounting frame 102. A feed port 104 is provided at the top of the processing box 103, and materials enter the inner cavity of the processing box 103 through the feed port 104;

[0027] The screening unit 200 includes a first screen 210, a second screen 211, and a third screen 212 that are fixedly installed in the inner cavity of the processing box 103. The first screen 210, the second screen 211, and the third screen 212 are all inclined. The inclination directions of the first screen 210 and the third screen 212 are the same, and the inclination directions of the first screen 210 and the second screen 211 are opposite. Rotating rods 201 are rotatably connected to both sides of the processing box 103. One end of the two groups of rotating rods 201 penetrates the side wall of the mounting frame 102, and the rotating rods 201 are rotatably connected to the mounting frame 102. A transmission structure is provided at the top of the mounting frame 102. When the materials are introduced into the internal space of the processing box 103, through the transmission structure, the rotating rods 201 are driven to perform reciprocating rotational motion, which not only causes the processing box 103 itself to swing in the left and right directions, but also makes the materials in the processing box 103 slide left and right in the cavity. In such a dynamic process, the materials sequentially pass through the first screen 210, the second screen 211, and the third screen 212, realizing continuous and multi-level screening processing. At the same time, when the processing box 103 swings, the continuous impact and flow of the materials on the screen apply an additional dynamic force to the screening process. This force helps to enhance the vibration effect of the screen, thereby further improving the screening efficiency and effect, and solving the problem that a single-screen configuration can only achieve single-particle size classification, and materials with multi-particle size requirements need to be screened multiple times, increasing time and cost and reducing screening efficiency.

[0028] The transmission structure includes a double-shaft motor 203 fixedly installed at the top of the mounting frame 102. Second transmission wheels 204 are fixedly installed on both sides of the double-shaft motor 203. First transmission wheels 202 are arranged on both sides of the mounting frame 102, and the side walls of the two groups of first transmission wheels 202 are fixedly connected to one end of two groups of rotating rods 201. Transmission belts 205 are sleeved on the outer surfaces of the two groups of first transmission wheels 202 and the two groups of second transmission wheels 204. Support plates 213 are symmetrically installed at the top of the mounting frame 102, and the support plates 213 are rotationally connected to the output shafts of the double-shaft motor 203. When the double-shaft motor 203 is started, the double-shaft motor 203 drives the two groups of second transmission wheels 204 to rotate. The two groups of second transmission wheels 204 drive the two groups of first transmission wheels 202 to rotate synchronously and in the same direction through the transmission belts 205, thereby driving the rotating rods 201 to rotate and realizing the swinging of the processing box 103.

[0029] The aperture diameters of the first sieve 210, the second sieve 211, and the third sieve 212 gradually decrease for multi-stage screening.

[0030] A first discharge port 206 is formed in the side wall of the processing box 103 and is located above the first sieve 210. A second discharge port 207 is formed in one side of the base 101 away from the first discharge port 206 and is located between the first sieve 210 and the second sieve 211. A third discharge port 208 is formed in one side of the base 101 close to the first discharge port 206 and is located between the second sieve 211 and the third sieve 212. A fourth discharge port 209 is formed in one side of the base 101 away from the third discharge port 208, and the fourth discharge port 209 is located below the third sieve 212. After the screening process is completed, first, the first discharge port 206 is gradually opened, followed by the second discharge port 207 and the third discharge port 208 in sequence until the last fourth discharge port 209. The opening of each discharge port follows immediately after the previous one is emptied of materials. At the same time, the processing box 103 is adjusted to a suitable inclination angle to assist the materials to flow out more smoothly by the action of gravity.

[0031] The first sieve 210, the second sieve 211, and the third sieve 212 are all made of metal wires. Since the metal wires have a certain elasticity, during the swinging process of the processing box 103, the elastic characteristics of the first sieve 210, the second sieve 211, and the third sieve 212 will make them more likely to be affected by external forces and generate vibrations, improving the screening effect on the materials.

[0032] The feed inlet 104 is located at the top of the higher horizontal position side of the first sieve 210, facilitating the preliminary screening of the materials.

[0033] During use, the material enters the inner cavity of the processing box 103 through the feed inlet 104. Through the transmission structure, the rotating rod 201 is driven to perform a reciprocating rotational motion, which not only causes the processing box 103 itself to swing in the left-right direction, but also makes the material in the processing box 103 slide left and right in the cavity. In such a dynamic process, the material sequentially passes through the first screen 210, the second screen 211, and the third screen 212, realizing continuous and multi-level screening processing. At the same time, when the processing box 103 swings, the continuous impact and flow of the material on the screen apply an additional dynamic force to the screening process. This force helps to enhance the vibration effect of the screen, thereby further improving the screening efficiency and effect. After the screening process is completed, first gradually open the first discharge port 206, followed by the second discharge port 207, the third discharge port 208, and finally the fourth discharge port 209. The opening of each discharge port follows immediately after the previous one is emptied of material. At the same time, the processing box 103 is adjusted to a suitable inclination angle to assist the material to flow out more smoothly by gravity, solving the problem that a single-screen configuration can only achieve a single particle size classification, and multiple screenings are required for materials with multi-particle size requirements, increasing time and cost and reducing screening efficiency.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A multi-layer vibrating screen, characterized in that, Comprising: A main body unit (100), which includes a base (101) and a mounting frame (102) that is mounted in a matching manner with the base (101). A processing box (103) is provided in the inner cavity of the mounting frame (102), and a feed inlet (104) is provided at the top of the processing box (103); A screening unit (200), which includes a first screen (210), a second screen (211), and a third screen (212) that are fixedly installed in the inner cavity of the processing box (103). The first screen (210), the second screen (211), and the third screen (212) are all inclined. The inclination directions of the first screen (210) and the third screen (212) are the same, and the inclination directions of the first screen (210) and the second screen (211) are opposite. Rotating rods (201) are rotatably connected to both sides of the processing box (103). One end of the two groups of rotating rods (201) penetrates through the side wall of the mounting frame (102), and the rotating rods (201) are rotatably connected to the mounting frame (102). A transmission structure is provided at the top of the mounting frame (102).

2. The multi-layer vibrating screen according to claim 1, characterized in that: The transmission structure includes a double-shaft motor (203) fixedly installed at the top of the mounting frame (102). Second transmission wheels (204) are fixedly installed on both sides of the double-shaft motor (203). First transmission wheels (202) are provided on both sides of the mounting frame (102), and the side walls of the two groups of first transmission wheels (202) are fixedly connected to one end of the two groups of rotating rods (201). Transmission belts (205) are sleeved on the outer surfaces of the two groups of first transmission wheels (202) and the two groups of second transmission wheels (204). Support plates (213) are symmetrically installed at the top of the mounting frame (102), and the support plates (213) are rotatably connected to the output shaft of the double-shaft motor (203).

3. The multi-layer vibrating screen according to claim 1, characterized in that: The apertures of the first screen (210), the second screen (211), and the third screen (212) gradually become smaller for multi-stage screening.

4. A multi-layer vibrating screen according to claim 1, characterized in that: A first discharge port (206) is provided on the side wall of the processing box (103) and is located above the first screen (210). A second discharge port (207) is provided on the side of the base (101) away from the first discharge port (206) and is located between the first screen (210) and the second screen (211). A third discharge port (208) is provided on the side of the base (101) close to the first discharge port (206) and is located between the second screen (211) and the third screen (212). A fourth discharge port (209) is provided on the side of the base (101) away from the third discharge port (208), and the fourth discharge port (209) is located below the third screen (212).

5. A multi-layer vibrating screen according to claim 1, characterized in that: The first screen (210), the second screen (211), and the third screen (212) are all made of metal wires.

6. The multi-layer vibrating screen according to claim 1, wherein: The feed inlet (104) is located at the top of the side with a relatively higher horizontal position of the first screen (210).

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