A multi-swinging gyratory screen

Abstract

The utility model discloses a kind of multiple gyration swing screens, including the lower layer screen grid, middle layer screen grid and upper layer screen grid being equipped with in screen body;Upper layer screen grid, middle layer screen grid and lower layer screen grid are respectively equipped with upper layer screen, middle layer screen and lower layer screen in upper layer screen grid, middle layer screen grid and lower layer screen grid;Upper layer screen grid outer wall is equipped with discharge port one, lower layer screen grid outer wall is equipped with discharge port three in the upper end corresponding to lower layer screen, lower layer screen grid outer wall is equipped with discharge port two and discharge port four respectively in the upper end and lower end corresponding to lower layer screen;Middle layer screen is equipped with the middle layer material guide plate of the rotation guide when being able to swing screen separation to upper part material on it, lower layer screen is equipped with the lower layer material guide plate of the rotation guide when being able to swing screen separation to upper part material on it, and inner passage is equipped between middle layer screen and lower layer screen;The utility model has the advantages such as maximum extension material in the running track of screen body, screening time, improve the screening efficiency and screening accuracy of material in screen body etc.

Description

Technical Field

[0001] This utility model relates to the field of oscillating screen technology, specifically a multi-rotation oscillating screen. Background Technology

[0002] The oscillating screen is a high-efficiency screening device suitable for fine screening operations. It is widely used in the chemical, pharmaceutical, food and spice, tea, beverage, plastics, rubber, fertilizer, sugar and salt industry, wood industry and plywood, recycled materials and other industries for the grading of fine materials.

[0003] For screening in industries such as pharmaceuticals, fragrances, and chemicals, where the materials themselves are relatively high-value, users have high requirements for the efficiency and quality of the screening process. That is, they want to screen and recover as much qualified material as possible while minimizing contamination to maximize profits. Currently, the market often uses circulation equipment and pipelines to re-feed the screening machine to achieve circulating screening and improve efficiency. This method not only requires additional circulation equipment and conveying pipelines, occupying more space, but also increases the risk of contamination.

[0004] Patent publication number CN216965300U discloses a novel rotary swing screen, specifically disclosing a first screen, a second screen, and a third screen arranged sequentially on the screen body. The top of the third screen is fixedly connected to a rotary channel. However, since the rotary channel is only set on the third screen, there are problems such as extending the running trajectory of the material in the screen body, limited screening time, and low screening accuracy. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a multi-rotation swing screen that maximizes the running trajectory and screening time of materials in the screen body, further improves the screening efficiency and screening accuracy of materials in the screen body, has a simple structure, occupies little space, does not require additional circulation equipment and conveying pipelines, has low manufacturing cost, and can effectively solve the problems in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-rotation oscillating screen, comprising a lower screen grid, a middle screen grid, an upper screen grid, and a sealing cover arranged sequentially on a screen body; the sealing cover has a feed inlet at its top; the upper screen grid contains an upper screen mesh, and the outer wall of the upper screen grid has a discharge outlet at the upper end of the corresponding upper screen mesh; the middle screen grid contains a middle screen mesh; the lower screen grid contains a lower screen mesh, and the outer wall of the lower screen grid has a discharge outlet at the upper end of the corresponding lower screen mesh; the lower screen grid contains a lower screen mesh, and the outer wall of the lower screen grid has a discharge outlet at the upper end of the corresponding lower screen mesh; the lower screen grid contains a discharge outlet at the upper end of the corresponding lower screen mesh. Each screen has an umbrella-shaped plate at the bottom. The outer wall of the lower screen has discharge port 2 and discharge port 4 at the corresponding upper and lower ends of the umbrella-shaped plate. The screen body is also equipped with a drive mechanism that can drive it to swing. The middle screen has a middle guide plate that can rotate and guide the material above it when it swings and screens. The outer edge of the middle screen has an internal channel. The lower screen has a lower guide plate that can rotate and guide the material above it when it swings and screens. The end of the internal channel extends into the lower guide plate and is located above the lower screen.

[0007] Furthermore, the middle layer guide plate includes a second arc-shaped guide plate concentrically arranged at the upper end of the middle layer screen, and a second guide plate closing plate at one open end of the arc-shaped guide plate. The second guide plate closing plate abuts and closes with the inner wall of the middle layer screen, and the built-in channel is arranged at the closing point.

[0008] Furthermore, the top of the arc-shaped guide plate is provided with a receiving tray, which has a funnel-shaped structure.

[0009] Furthermore, the lower guide plate includes an arc guide plate three concentrically arranged at the upper end of the lower screen, and an internal channel located inside the arc guide plate three. An open end of the arc guide plate three is provided with a guide closing plate three, which abuts against and closes with the inner wall of the lower screen grid, and the outlet three corresponds to the position of the closing point.

[0010] Furthermore, the upper screen is provided with an upper guide plate that can rotate and guide the material above it during oscillating screening; the upper guide plate includes an arc guide plate concentrically arranged at the upper end of the upper screen, and a guide closing plate at one open end of the arc guide plate, which abuts against and closes with the inner wall of the upper screen, and the outlet corresponds to the position of the closing point.

[0011] Furthermore, the mesh size of the upper screen is larger than that of the middle screen, and the mesh size of the middle screen is the same as that of the lower screen.

[0012] Furthermore, the drive mechanism includes a transmission component fixedly installed at the bottom of the screen body, a base fixedly installed in the middle of the transmission component, a drive motor fixedly installed at the bottom of the transmission component, and the base fixedly connected to the screen body by a rubber spring.

[0013] Furthermore, the second and fourth discharge ports are connected to each other via a connecting hose.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This multi-rotor oscillating screen, through the guiding action of the upper guide plate, causes the material on the upper screen to rotate, effectively extending the movement trajectory and screening time of the material on the upper screen; through the guiding action of the middle guide plate, causes the material on the middle screen to rotate, effectively extending the movement trajectory and screening time of the material on the middle screen; through the built-in channel connecting the middle screen and the lower screen, the material on the middle screen continues to be screened through the lower screen, further extending the screening path of the material, and through the guiding action of the lower guide plate, causes the material on the lower screen to rotate, effectively extending the movement trajectory and screening time of the material on the lower screen; this multi-rotor oscillating screen maximizes the extension of the material's running trajectory and screening time within the screen body, further improving the screening efficiency and screening accuracy of the material within the screen body, with a simple structure, small footprint, no need for additional circulation equipment and conveying pipelines, and low manufacturing cost. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the upper sieve grid of this utility model; Figure 3 This is a top view of the upper sieve grid of this utility model; Figure 4 This is a cross-sectional view of the middle layer sieve grid of this utility model; Figure 5 This is a top view of the middle layer sieve of this utility model; Figure 6 This is a cross-sectional view of the lower sieve grid of this utility model; Figure 7 This is a top view of the lower sieve grid of this utility model.

[0016] In the diagram: 1. Screen body; 2. Upper screen grid; 21. Upper screen mesh; 22. Outlet 1; 3. Middle screen grid; 31. Middle screen mesh; 4. Lower screen grid; 41. Lower screen mesh; 42. Outlet 2; 43. Outlet 3; 44. Outlet 4; 5. Sealing cover; 51. Inlet; 6. Upper guide plate; 61. Arc guide plate 1; 62. Guide sealing plate 1; 7. Middle guide plate; 71. Receiving tray; 72. Arc guide plate 2; 73. Guide sealing plate 2; 8. Lower guide plate; 81. Arc guide plate 3; 82. Guide sealing plate 3; 9. Internal channel; 10. Umbrella-shaped plate; 11. Base support; 12. Drive motor; 13. Transmission component; 14. Connecting hose. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0018] Please see Figure 1 This utility model provides a technical solution: a multi-rotation oscillating screen, comprising a screen body 1 with a lower screen grid 4, a middle screen grid 3, an upper screen grid 2, and a sealing cover 5 arranged sequentially on the screen body 1. The sealing cover 5 has a feed inlet 51 at its top. The upper screen grid 2 contains an upper screen mesh 21, and the outer wall of the upper screen grid 2 has a discharge outlet 22 located at the upper end of the corresponding upper screen mesh 21. The middle screen grid 3 contains a middle screen mesh 31. The lower screen grid 4 contains a lower screen mesh 41. The outer wall of the lower screen grid 4 has a discharge outlet 33 located at the upper end of the corresponding lower screen mesh 41. Umbrella-shaped plates 10 are provided above and below the screen 41. On the outer wall of the lower screen 4, at the corresponding upper and lower ends of the umbrella-shaped plates 10, there are discharge ports 2 42 and 44 respectively. The discharge ports 2 42 and 44 are connected to each other through connecting hoses 14. The screen body 1 is also provided with a drive mechanism that can drive it to swing. The drive mechanism includes a transmission component 13 fixedly installed at the bottom of the screen body 1, a base support 11 fixedly installed in the middle of the transmission component 13, a drive motor 12 fixedly installed at the bottom of the transmission component 13, and the base support 11 is fixedly connected to the screen body 1 through a rubber spring. In this embodiment, the sieve holes of the upper sieve 21 are larger than those of the middle sieve 31, and the sieve holes of the middle sieve 31 are the same size as those of the lower sieve 41. Please refer to the following: Figure 1 and Figure 2-3 The upper screen 21 is provided with an upper guide plate 6 that can rotate and guide the material above it during swing screening; the upper guide plate 6 includes an arc guide plate 61 concentrically arranged at the upper end of the upper screen 21, and a guide closing plate 62 at one open end of the arc guide plate 61. The guide closing plate 62 abuts and closes with the inner wall of the upper screen 21, and the outlet 22 corresponds to the position of the closing point. Please refer to the following: Figure 1 and Figure 4-5The middle layer screen 31 is provided with a middle layer guide plate 7, which can rotate and guide the material above it during swing screening. The outer edge of the middle layer screen 31 is provided with an internal channel 9. The middle layer guide plate 7 includes an arc guide plate 72 concentrically arranged at the upper end of the middle layer screen 31. One open end of the arc guide plate 72 is provided with a guide closing plate 73. The guide closing plate 73 abuts and closes with the inner wall of the middle layer screen 3, and the internal channel 9 is provided at the closing point. The top of the arc guide plate 72 is provided with a receiving tray 71, which has a funnel-shaped structure. Please refer to the following: Figure 1 and Figure 6-7 The lower screen 41 is provided with a lower guide plate 8 that can rotate and guide the material above it during oscillating screening. The end of the built-in channel 9 extends into the lower guide plate 8 and is located above the lower screen 41. The lower guide plate 8 includes an arc guide plate 81 concentrically arranged at the upper end of the lower screen 41. The built-in channel 9 is located inside the arc guide plate 81. A guide sealing plate 82 is provided at one open end of the arc guide plate 81. The guide sealing plate 82 abuts and closes with the inner wall of the lower screen 4, and the outlet 43 corresponds to the position of the closed part.

[0019] In use: The drive motor 12 drives the transmission component 13 to make the screen body 1 swing and screen. The material enters the upper screen grid 2 through the feed port 51. The material in the upper screen grid 2 falls into the center of the upper screen 21, that is, into the arc guide plate 61 of the upper guide plate 6. When the upper screen 21 swings and screens the material above it, the material on the upper screen 21 rotates due to the guiding action of the arc guide plate 61 and the guide sealing plate 62 (the material rotates for the first time), which effectively prolongs the movement trajectory and screening time of the material on the upper screen 21. The material on the upper screen 21 is discharged through the discharge port 22. The undersize material from the upper screen 21 falls through the receiving tray 71 into the arc guide plate 72 of the middle screen 31. When the middle screen 31 screens the material above it, the material on the middle screen 31 rotates due to the guiding action of the arc guide plate 72 and the guide sealing plate 73 (the material rotates for the second time), which effectively prolongs the movement trajectory and screening time of the material on the middle screen 31. The undersize material from the middle screen 31 falls onto the umbrella-shaped plate 10 at the top and is discharged through the discharge port 42. The material on the middle screen 31 falls through the built-in channel 9 into the arc guide plate 3 81 of the lower screen 41. The lower screen 41 continues to screen the material on the middle screen 31. The material on the lower screen 41 rotates due to the guiding action of the arc guide plate 3 81 and the guide sealing plate 3 82, which effectively extends the movement trajectory and screening time of the material on the lower screen 41. The material on the lower screen 41 is discharged through the discharge port 3 43. The material undersize of the lower screen 41 falls onto the umbrella-shaped plate 10 at the lower end and is discharged through the discharge port 44. The multi-rotation oscillating screen disclosed in this embodiment uses the guiding action of the upper guide plate 6 to cause the material on the upper screen 21 to rotate, effectively extending the movement trajectory and screening time of the material on the upper screen 21; the guiding action of the middle guide plate 7 causes the material on the middle screen 31 to rotate, effectively extending the movement trajectory and screening time of the material on the middle screen 31; the middle screen 31 and the lower screen 41 are connected by the built-in channel 9, and the lower screen 41 guides the middle screen 31. The material on the screen continues to be screened, further extending the screening path. The material on the lower screen 41 rotates due to the guiding action of the lower guide plate 8, effectively extending the movement trajectory and screening time of the material on the lower screen 41. This multi-rotation oscillating screen maximizes the extension of the material's running trajectory and screening time within the screen body 1, further improving the screening efficiency and accuracy of the material within the screen body 1. It has a simple structure, occupies little space, requires no additional circulation equipment or conveying pipelines, and has low manufacturing costs.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-rotation oscillating screen, comprising a lower screen grid, a middle screen grid, an upper screen grid, and a sealing cover arranged sequentially on a screen body, wherein the sealing cover has a feed inlet at its top; an upper screen mesh is provided in the upper screen grid, and a discharge outlet is provided on the outer wall of the upper screen grid at the upper end of the corresponding upper screen mesh; a middle screen mesh is provided in the middle screen grid; a lower screen mesh is provided in the lower screen grid, and a discharge outlet is provided on the outer wall of the lower screen grid at the upper end of the corresponding lower screen mesh; umbrella-shaped plates are provided above and below the lower screen mesh in the lower screen grid, and discharge outlets are provided at the upper and lower ends of the umbrella-shaped plates on the outer wall of the lower screen grid at the corresponding upper and lower ends, respectively; the screen body is also provided with a driving mechanism capable of driving it to oscillate; characterized in that: The middle screen is equipped with a middle guide plate that can rotate and guide the material above it during swing screening. The outer edge of the middle screen is equipped with a built-in channel. The lower screen is equipped with a lower guide plate that can rotate and guide the material above it during swing screening. The end of the built-in channel extends into the lower guide plate and is located above the lower screen.

2. The multi-rotation oscillating screen according to claim 1, characterized in that: The middle layer guide plate includes an arc-shaped guide plate two arranged concentrically at the upper end of the middle layer screen, and a guide closing plate two at one open end of the arc-shaped guide plate two. The guide closing plate two abuts and closes with the inner wall of the middle layer screen, and the built-in channel is set at the closing point.

3. A multi-rotation oscillating screen according to claim 2, characterized in that: The top of the arc-shaped guide plate is provided with a receiving tray, which has a funnel-shaped structure.

4. A multi-rotation oscillating screen according to claim 1, characterized in that: The lower guide plate includes an arc guide plate three arranged concentrically with the upper end of the lower screen, and an internal channel located inside the arc guide plate three. A guide sealing plate three is provided at one open end of the arc guide plate three. The guide sealing plate three abuts and closes with the inner wall of the lower screen grid, and the outlet three corresponds to the position of the closed part.

5. A multi-rotation oscillating screen according to claim 1, characterized in that: The upper screen is provided with an upper guide plate that can rotate and guide the material on it during oscillating screening; the upper guide plate includes an arc guide plate concentrically arranged at the upper end of the upper screen, and a guide closing plate at one open end of the arc guide plate. The guide closing plate abuts and closes with the inner wall of the upper screen, and the outlet corresponds to the position of the closing point.

6. A multi-rotation oscillating screen according to claim 1, characterized in that: The mesh size of the upper screen is larger than that of the middle screen, and the mesh size of the middle screen is the same as that of the lower screen.

7. A multi-rotation oscillating screen according to claim 1, characterized in that: The drive mechanism includes a transmission component fixedly installed at the bottom of the screen body, a base fixedly installed in the middle of the transmission component, a drive motor fixedly installed at the bottom of the transmission component, and the base fixedly connected to the screen body by a rubber spring.

8. A multi-rotation oscillating screen according to claim 1, characterized in that: The second and fourth discharge ports are connected to each other via a connecting hose.

Images