Wind screening device
By designing a wind-powered screening device, multi-stage screening is achieved using wind and centrifugal force, which solves the problems of low efficiency and high cost in the separation of plastic bottle flakes in existing technologies, and realizes a high-efficiency and low-cost multi-stage screening effect.
Patent Information
- Application Number
- CN202520203799.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-02-10
AI Technical Summary
Existing technologies for separating plastic bottle flakes suffer from problems such as labor-intensive manual sorting, complex vibrating screen structures and noise pollution, unsuitability of density sorters, and high cost of optical sorting equipment. Furthermore, wind-powered equipment on the market cannot effectively screen materials of various sizes.
A wind-powered screening device was designed, comprising a material cavity, a feed inlet, a feed rotary valve, a bulk material outlet, a discharge rotary valve, an air duct, a blower, a baffle screen, a baffle plate, a screening channel, and a telescopic screen. It uses wind power and centrifugal force to separate bottle flakes of different sizes, and achieves multi-stage screening through multiple telescopic screens.
It achieves efficient and low-cost multi-stage screening, the screen is easy to clean, has high production efficiency, simple structure, and avoids noise pollution and high maintenance costs.
Smart Images
Figure CN223820898U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of plastic cleaning and recycling equipment, specifically to a wind-powered screening device. Background Technology
[0002] After the bottle flakes are washed, sometimes bottle flakes of a certain size range are needed. This requires multi-layer screening. In existing material separation methods, manual sorting is time-consuming and labor-intensive; multi-layer screens using vibration power sources are complex in structure and generate noise pollution; density sorters are not suitable for screening plastic bottle flakes because the thickness of the recycled plastic flakes varies; optical sorting equipment has high investment costs and requires frequent maintenance, resulting in high maintenance costs. Commercially available wind-powered equipment can only simply separate light and small materials from heavy materials, and cannot screen materials of various sizes. Therefore, those skilled in the art have provided a wind-powered screening device to solve the problems mentioned in the background art. Summary of the Invention
[0003] The purpose of this invention is to provide a wind-powered screening device to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: it includes a material cavity, a feed inlet, a feed rotary valve, a large material outlet, a discharge rotary valve, an air duct, a blower, a baffle screen, a baffle plate, a screening channel, a discharge port, and a telescopic screen; the material cavity is cylindrical, and a cylindrical baffle plate is fixed inside the material cavity, forming an annular air duct between the baffle plate and the material cavity; a feed rotary valve is installed at the upper end of one side of the material cavity, and a feed inlet is connected to the feed rotary valve; a discharge rotary valve is installed at the bottom of the material cavity, and a large material outlet is provided at the bottom of the discharge rotary valve; the upper end of the other side of the material cavity is connected to the screening channel, and several discharge ports are provided on one side of the screening channel, with a telescopic screen installed at each discharge port, and the mesh size of the telescopic screen increasing from bottom to top; the telescopic screen is inserted on the other side of the screening channel; the lower part of the material cavity is connected to a blower through an air duct, and a baffle screen is installed at the end of the air duct.
[0005] Furthermore, an inspection port is installed on the side wall of the material container above the air duct.
[0006] Furthermore, the screening channel is square tube shaped, and a screen support is provided on the inner wall of the screening channel, with one end of the telescopic screen located on the screen support.
[0007] Furthermore, the air duct is tangent to the material cavity.
[0008] The beneficial effects of this utility model after adopting the above structure are as follows: The wind-powered screening device of this utility model uses wind power to separate bottle flakes of different sizes, and selects the bottle flakes of the required size through the screen. The screen is easy to clean, prevents material blockage, has high production efficiency, simple structure, and low production cost. Attached Figure Description
[0009] Figure 1 This is a structural diagram of the present invention.
[0010] Explanation of reference numerals in the attached figures:
[0011] Material cavity 1, feed inlet 2, feed rotary valve 3, large material outlet 4, discharge rotary valve 5, air duct 6, blower 7, baffle screen 8, baffle plate 9, screening channel 10, discharge port 11, telescopic screen 12, air duct 13, inspection port 14, screen support 15. Detailed Implementation
[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] See as Figure 1 As shown, this specific embodiment adopts the following technical solution: It includes a material cavity 1, a feed inlet 2, a feed rotary valve 3, a material outlet 4, a discharge rotary valve 5, an air duct 6, a blower 7, a baffle screen 8, a baffle 9, a screening channel 10, a discharge outlet 11, and a telescopic screen 12; the material cavity 1 is cylindrical, and a cylindrical baffle 9 is fixed inside the material cavity 1, forming an annular air duct 13 between the baffle 9 and the material cavity 1. Due to the action of the baffle 9, the material will move in a circular motion along the cylinder wall. A feed rotary valve 3 is installed on the upper side of one side of the material cavity 1, and a feed inlet 2 is connected to the feed rotary valve 3. A discharge rotary valve 5 is installed at the bottom of the material cavity 1. The bottom of the rotary valve 5 is provided with a large material outlet 4. The lower part of the material cavity 1 is connected to a blower 7 through an air duct 6. The air duct 6 is tangent to the material cavity 1. The air blown by the blower 7 enters from the tangent of the material cavity 1. A baffle screen 8 is installed at the end of the air duct 6. The baffle screen 8 is used to block large materials outside the air duct 6. Due to the wind direction, small materials will not enter the air duct 6. The material enters the material cavity 1 from the feed inlet 2. Large materials are discharged directly from the large material outlet 4 at the rotary valve 5. Rotary valves are installed at the feed inlet 2 and the large material outlet 4. When there is wind power conveying, the rotary valves can use their sealing characteristics to block the wind power, allowing the material to enter and be delivered smoothly.
[0014] The upper end of the other side of the material container 1 is connected to the screening channel 10. Several discharge ports 11 are provided on one side of the screening channel 10, and each discharge port 11 is equipped with a telescopic screen 12. The mesh size of the telescopic screen 12 increases from bottom to top. When the material moves to the screening channel 10, it is thrown out of the material container 1 by centrifugal force and enters the screening channel 10. After the material passes through the telescopic screen 12, material larger than the screen aperture remains, while material smaller than the screen aperture passes through to the next screen. The material is screened layer by layer, and the material left on the corresponding screen is discharged from the corresponding outlet 11 due to centrifugal force and wind force. The telescopic screen 12 is inserted on the other side of the screening channel 10. The screening channel 10 is square tube shaped, and the inner side wall of the screening channel 10 is provided with a screen support 15. One end of the telescopic screen 12 is located on the screen support 15 to support the telescopic screen 12. When the material is blocked, the telescopic screen 12 can be pulled out and then inserted. The material on the screen can be scraped off through the side wall of the screening channel 10 to achieve the effect of cleaning the screen.
[0015] An inspection port 14 is installed on the side wall of the material cavity 1 above the air duct 6. One side of the inspection port 14 is hinged to the opening of the material cavity 1, and the other side is fixed to the opening of the material cavity 1 by a latch. A sealing ring is installed around the inspection port 14 to prevent material leakage.
[0016] The working principle of this utility model is as follows: the material is put into the feed inlet 2, and after the material passes through the feed rotary valve 3, it enters the material cavity 1. The air blown by the blower 7 blows into the material cavity 1 from the tangent. The largest material is not affected by the wind force and is directly discharged from the discharge rotary valve 5 and the large material outlet 4. The remaining material moves in a circular motion along the inner wall of the material cavity 1. When the material moves to the screening channel 10, the material is thrown out of the material cavity 1 by the centrifugal force and enters the screening channel 10. It is screened by multiple telescopic screens 12 with different mesh sizes. The material coming out of the discharge port 11 corresponding to each telescopic screen 12 will be collected for the next step of processing.
[0017] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A wind-powered screening device, characterized in that: It includes a material cavity, a feed inlet, a feed rotary valve, a bulk material outlet, a discharge rotary valve, an air duct, a blower, a baffle screen, a baffle plate, a screening channel, a discharge port, and a telescopic screen. The material cavity is cylindrical, and a cylindrical baffle plate is fixed inside the material cavity, forming an annular air duct between the baffle plate and the material cavity. A feed rotary valve is installed at the upper end of one side of the material cavity, and a feed inlet is connected to the feed rotary valve. A discharge rotary valve is installed at the bottom of the material cavity, and a bulk material outlet is provided at the bottom of the discharge rotary valve. The upper end of the other side of the material cavity is connected to the screening channel, and several discharge ports are provided on one side of the screening channel. A telescopic screen is provided at each discharge port, and the mesh size of the telescopic screen increases from bottom to top. The telescopic screen is inserted on the other side of the screening channel. The lower part of the material cavity is connected to the blower through an air duct, and a baffle screen is installed at the end of the air duct.
2. The wind-powered screening device according to claim 1, characterized in that: An inspection port is installed on the side wall of the material container above the air duct.
3. The wind-powered screening device according to claim 1, characterized in that: The screening channel is square tube shaped, and a screen support is provided on the inner wall of the screening channel. One end of the telescopic screen is located on the screen support.
4. The wind-powered screening device according to claim 1, characterized in that: The air duct is tangent to the material cavity.