Mulching film impurity winnowing machine
By using a mulch film impurity air separator to separate mulch film and impurities with a guide plate and a blower, combined with a cyclone separator and a collection bin, the problems of high water consumption and high cost of traditional mulch film pretreatment are solved, achieving efficient and low-cost impurity removal and mulch film recycling.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BAZHOU HUIFENG PLASTICS CO LTD
- Filing Date
- 2026-04-13
- Publication Date
- 2026-05-19
AI Technical Summary
Traditional methods of pre-treating plastic film consume a lot of water and are costly, and are difficult to effectively remove impurities such as soil, stones and straw from the plastic film.
The plastic film impurity air separator uses a guide plate and a blower to separate the plastic film and impurities. The airflow lifts the light plastic film and causes the heavy impurities to settle. The impurities are further separated by a cyclone separator and a collection bin, achieving efficient separation and collection of plastic film.
It achieves efficient separation of plastic film and impurities, reduces treatment costs, avoids wastewater generation, and improves the plastic film recycling rate.
Smart Images
Figure CN122058461A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of plastic film treatment technology, and in particular to a plastic film impurity air separator. Background Technology
[0002] With social development, my country has become the country with the largest use and coverage area of plastic film in the world, consuming approximately 1.45 million tons of plastic film annually, covering nearly 300 million mu (approximately 20 million hectares) of farmland. Plastic film mulching increases crop yields by more than 30%. Xinjiang is the region with the largest area of plastic film mulching and the highest usage of plastic film in my country, with more than 2.45 million hectares of farmland covered with about 150,000 tons of plastic film annually.
[0003] Recycling and reusing agricultural mulch film is a circular utilization method that transforms agricultural waste into useful products, which helps reduce environmental pollution and creates economic value. Before the waste mulch film is fed into the compression machine, it needs to be pre-treated to remove impurities such as mud, stones, and straw. Traditional pre-treatment methods involve crushing the mulch film, washing it with water, and then drying it. The washing process consumes a lot of water and has high processing costs. Summary of the Invention
[0004] In view of this, the present invention provides a plastic film impurity air separator, the main purpose of which is to provide a low-cost method for removing impurities from plastic film.
[0005] To achieve the above objectives, the present invention mainly provides the following technical solutions:
[0006] This invention provides a plastic film impurity air separator, which includes: a housing, a guide plate, a first blower, and a collection mechanism;
[0007] The housing includes a first side wall and a second side wall opposite to each other. The upper end of the first side wall is connected to the feed pipe, and the lower end of the first side wall is provided with a notch, which is connected to a shut-off valve.
[0008] The guide plate is inclinedly disposed inside the box, the lower end of the guide plate is fixedly connected to the lower edge of the notch, the upper end of the guide plate is fixedly connected to the second side wall, and the guide plate is evenly distributed with multiple through holes;
[0009] The outlet of the first induced draft fan is fixedly connected to the lower end of the housing;
[0010] The collection mechanism is connected to the upper end of the box.
[0011] The objectives of this invention and the technical problems it addresses can be further achieved by the following technical measures.
[0012] Optionally, it also includes a waste discharge box, one side wall of which is connected to the notch, the bottom wall of which is connected to the air shut-off valve, and the other side wall of which is provided with an inspection port, the edge of which is provided with a sliding groove for installing a plug plate.
[0013] Optionally, a second induced draft fan is also included, with its inlet connected to the feeding hopper and its outlet connected to the upper end of the first sidewall via the feed pipe.
[0014] Optionally, it also includes a drainage tube, one end of which is connected to the upper end of the box and the other end of which is connected to the collection mechanism, wherein the cross-sectional area of the other end of the drainage tube is smaller than the cross-sectional area of the first end of the drainage tube.
[0015] Optionally, the collection mechanism includes a cyclone separator and a collection chamber, with the other end of the drain pipe connected to the tangential inlet of the cyclone separator and the lower outlet of the cyclone separator connected to the inlet of the collection chamber.
[0016] Optionally, the collection mechanism includes a pressure relief chamber, the sidewall of which is evenly distributed with multiple vent holes, the other end of the drain pipe is connected to the tangential inlet of the pressure relief chamber, and the lower end of the pressure relief chamber is connected to a discharge valve.
[0017] By employing the above technical solution, the present invention has at least the following advantages:
[0018] The baffle plate divides the box into an upper and lower space. The mulch film containing impurities reaches the upper space along the feed pipe. The first blower drives the airflow into the lower space. The airflow reaches the upper space through multiple through holes. In the upper space, the airflow lifts the mulch film with a smaller specific gravity, while the impurities such as soil, stones, and straw with a larger specific gravity settle downwards and roll down along the inclined direction of the baffle plate to the opening, and finally exit the box through the air-closing valve. The lifted mulch film is discharged from the top of the box to the collection mechanism.
[0019] The above method achieves the separation of plastic film and impurities without generating wastewater, thus reducing treatment costs. Attached Figure Description
[0020] Figure 1 A partial three-dimensional perspective view of a plastic film impurity air separator provided in an embodiment of the present invention;
[0021] Figure 2 A partial front view of a plastic film impurity air separator provided in an embodiment of the present invention;
[0022] Figure 3 A side perspective view of a plastic film impurity air separator provided in an embodiment of the present invention;
[0023] Figure 4 A side view of a plastic film impurity air separator provided in an embodiment of the present invention;
[0024] Figure 5 A side view of another mulch film impurity air separator provided in an embodiment of the present invention.
[0025] The reference numerals in the accompanying drawings include: housing 1, guide plate 2, first induced draft fan 3, feed pipe 4, air shut-off valve 5, through hole 7, guide cavity 8, waste discharge box 9, inspection port 10, insert plate 11, second induced draft fan 12, feeding hopper 13, guide pipe 14, cyclone separator 15, collection bin 16, pressure relief bin 17, exhaust port 18. Detailed Implementation
[0026] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the specific embodiments, structures, features, and effects according to the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "embodiments" or "embodiments" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.
[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.
[0028] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a plastic film impurity air separator, which includes: a housing 1, a guide plate 2, a first blower 3, and a collection mechanism;
[0029] The housing 1 includes a first side wall and a second side wall opposite to each other. The upper end of the first side wall is connected to the feed pipe 4, and the lower end of the first side wall is provided with a notch, which is connected to the air shut-off valve 5.
[0030] The guide plate 2 is inclinedly disposed inside the housing 1. The lower end of the guide plate 2 is fixedly connected to the lower edge of the notch, and the upper end of the guide plate 2 is fixedly connected to the second side wall. The guide plate 2 is evenly distributed with a plurality of through holes 7.
[0031] The outlet of the first induced draft fan 3 is fixedly connected to the lower end of the housing 1;
[0032] The collection mechanism is connected to the upper end of the box 1.
[0033] The working process of a plastic film impurity air separator is as follows:
[0034] The guide plate 2 divides the box 1 into an upper space and a lower space. The mulch film containing impurities reaches the upper space along the feed pipe 4. The first blower 3 drives the airflow into the lower space. The airflow reaches the upper space through multiple through holes 7. In the upper space, the airflow lifts the mulch film with a smaller specific gravity. At the same time, impurities such as soil, stones, and straw with a larger specific gravity settle downwards and roll down along the inclined direction of the guide plate 2 to the gap, and finally exit the box 1 through the air-closing valve 5. The lifted mulch film is discharged from the top of the box 1 to the collection mechanism.
[0035] The above method achieves the separation of plastic film and impurities without generating wastewater, thus reducing treatment costs.
[0036] Specifically, it also includes a flow guide cavity 8. The outlet of the first induced draft fan 3 is connected to one end of the flow guide cavity 8, and the other end of the flow guide cavity 8 is connected to the lower side of the box 1. The cross-sectional area of one end of the flow guide cavity 8 is smaller than that of the other end of the flow guide cavity 8, and the horizontal width of the other end of the flow guide cavity 8 is equal to the horizontal width of the box 1. As the airflow flows along the flow guide cavity 8, it gradually diffuses, so that after the external airflow reaches the box 1, the width of the airflow is equal to the horizontal width of the box 1. The rising airflow fills the horizontal cross-section of the box 1, so that each through hole 7 of the flow guide plate 2 has airflow passing through, thereby providing comprehensive support for the mulch film in the upper space, thus ensuring a high recovery rate of clean mulch film and reducing the number of mulch film slipping down the flow guide plate 2 to the gap.
[0037] Specifically, the air shut-off valve 5 prevents external airflow from flowing into the housing 1 through the opening, or prevents airflow inside the housing 1 from flowing out through the opening, thus maintaining the stability of the airflow from bottom to top inside the housing 1.
[0038] like Figure 1 and Figure 2 As shown, in a specific embodiment, it also includes a waste discharge box 9, one side wall of which is connected to the notch, the bottom wall of which is connected to the air shut-off valve 5, and the other side wall of which is provided with an inspection port 10. The edge of the inspection port 10 is provided with a sliding groove for installing the insert plate 11.
[0039] In this embodiment, the waste discharge box 9 serves as a buffer area for the concentration of impurities. Impurities in the box 1 roll down along the guide plate 2 to the waste discharge box 9 and are then discharged through the air-closing valve 5. Operators can periodically disassemble the insert plate 11 of the inspection port 10 to check the condition inside the waste discharge box 9 and prevent debris from clogging the waste discharge box 9.
[0040] like Figure 2 As shown, in a specific embodiment, a second induced draft fan 12 is also included. The inlet of the second induced draft fan 12 is connected to the feeding hopper 13, and the outlet of the second induced draft fan 12 is connected to the upper end of the first side wall through the feed pipe 4.
[0041] In this embodiment, specifically, the second blower 12 and the feeding hopper 13 are fixedly installed on the ground. In daily operation, the operator can easily shovel the mulch film containing impurities into the feeding hopper 13. The second blower 12 drives the mulch film containing impurities to the box 1 with the airflow. Since the feed pipe 4 provides positive pressure air to the box 1, the rising airflow in the box 1 cannot flow back along the feed pipe 4. Finally, the upper end of the box 1 becomes the only pressure relief port of the box 1, thereby guiding the clean mulch film to the collection mechanism.
[0042] like Figures 1 to 4 As shown, in a specific embodiment, it also includes a drainage tube 14, one end of which is connected to the upper end of the box 1, and the other end is connected to the collection mechanism. The cross-sectional area of the other end of the drainage tube 14 is smaller than the cross-sectional area of the first end of the drainage tube 14.
[0043] In this embodiment, specifically, the cross-sectional area of the other end of the drainage pipe 14 is smaller than that of the first end of the drainage pipe 14. In the direction of airflow, the diameter of the drainage pipe 14 gradually decreases. During the flow of the mulch film, the probability of the remaining small amount of impurities sliding and rubbing against the inner wall of the drainage pipe 14 increases. Moreover, since the impurities have a higher specific gravity, the frictional force they experience is greater. This part of the impurities further decelerates relative to the mulch film, and the decelerated impurities eventually sink downwards, thereby further removing impurities from the mulch film.
[0044] like Figure 3 and Figure 4 As shown, in a specific embodiment, the collection mechanism includes a cyclone separator 15 and a collection chamber 16. The other end of the diversion pipe 14 is connected to the tangential inlet of the cyclone separator 15, and the lower outlet of the cyclone separator 15 is connected to the inlet of the collection chamber 16.
[0045] In this embodiment, the plastic film after removing most of the impurities flows through the cyclone separator 15. In the cyclone separator 15, the air with a smaller specific gravity is discharged from the upper outlet of the cyclone separator 15, while the plastic film with a larger specific gravity settles into the collection chamber 16 from the lower outlet of the cyclone separator 15. Through this embodiment, the plastic film and air are separated, and the stable collection of the plastic film is achieved.
[0046] like Figure 5 As shown, in a specific embodiment, the collection mechanism includes a pressure relief chamber 17, the sidewall of which is evenly distributed with a plurality of vent holes 18, the other end of the drain pipe 14 is connected to the tangential inlet of the pressure relief chamber 17, and the lower end of the pressure relief chamber 17 is connected to the discharge valve.
[0047] In this embodiment, specifically, the cleaned mulch film enters the pressure relief chamber 17 tangentially with the airflow. The airflow spirals downward along the inner wall of the pressure relief chamber 17, peeling off the mulch film fragments from the inner wall of the pressure relief chamber 17, preventing the mulch film from sticking to the inner wall of the pressure relief chamber 17, so that the mulch film rolls inside the pressure relief chamber 17. At the same time, the airflow inside the chamber gradually flows out of the pressure relief chamber 17 through multiple exhaust holes 18, thereby achieving stable collection of clean mulch film.
[0048] When the level of plastic film in the pressure relief chamber 17 is high, the discharge valve is opened to discharge the material.
[0049] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.
Claims
1. A plastic film impurity air separator, characterized in that, include: The housing includes a first side wall and a second side wall opposite to each other. The upper end of the first side wall is connected to the feed pipe, and the lower end of the first side wall is provided with a notch, which is connected to a shut-off valve. A flow guide plate is inclinedly disposed inside the box. The lower end of the flow guide plate is fixedly connected to the lower edge of the notch, and the upper end of the flow guide plate is fixedly connected to the second side wall. The flow guide plate has multiple through holes evenly distributed. The first induced draft fan, the outlet of which is fixedly connected to the lower end of the housing; A collection mechanism is connected to the upper end of the housing.
2. The mulch film impurity air separator according to claim 1, characterized in that, It also includes a waste discharge box, one side wall of which is connected to the notch, the bottom wall of which is connected to the air shut-off valve, and the other side wall of which is provided with an inspection port. The edge of the inspection port is provided with a sliding groove for installing a plug plate.
3. The mulch film impurity air separator according to claim 1, characterized in that, It also includes a second induced draft fan, the inlet of which is connected to the feeding hopper, and the outlet of which is connected to the upper end of the first side wall through the feed pipe.
4. The mulch film impurity air separator according to claim 1, characterized in that, It also includes a drainage tube, one end of which is connected to the upper end of the box and the other end is connected to the collection mechanism. The cross-sectional area of the other end of the drainage tube is smaller than the cross-sectional area of the first end of the drainage tube.
5. The mulch film impurity air separator according to claim 4, characterized in that, The collection mechanism includes a cyclone separator and a collection chamber. The other end of the drain pipe is connected to the tangential inlet of the cyclone separator, and the lower outlet of the cyclone separator is connected to the inlet of the collection chamber.
6. The mulch film impurity air separator according to claim 4, characterized in that, The collection mechanism includes a pressure relief chamber, the sidewall of which is evenly distributed with multiple vent holes. The other end of the drain pipe is connected to the tangential inlet of the pressure relief chamber, and the lower end of the pressure relief chamber is connected to the discharge valve.