Buffering winnowing system

Abstract

The invention discloses a buffer winnowing system which comprises a winnowing box internally provided with a winnowing cavity, the top of the winnowing cavity is provided with a feeding port, one side of the winnowing cavity is provided with an air inlet, and the other side of the winnowing cavity is provided with an air outlet channel; the air inlet pipe is connected to the outer side wall of the winnowing box and communicates with the air inlet; the buffering baffle is located below the feeding port, the upper end of the buffering baffle is hinged into the winnowing cavity, and the buffering baffle is used for buffering materials entering from the feeding port; the elastic piece is used for elastically supporting the buffer baffle; the heavy material receiving mechanism is used for receiving heavy materials; and the light material receiving mechanism is used for receiving light materials. According to the invention, rapid separation of light and heavy materials can be realized, and the separation efficiency is improved; and through the design of the buffer baffle and the elastic piece, impact and damage of heavy materials to equipment in the feeding and sorting process are reduced, the maintenance frequency is reduced, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of material air separation, and in particular to a buffer air separation system. Background Art

[0002] The resource utilization of decoration waste to reduce environmental pollution is an important issue of sustainable development. To achieve resource utilization, we must first classify the aggregates, boards, plastics and steel bars in the decoration waste mixture one by one. The effective separation of aggregates (heavy materials) and plastics / wood boards (light materials) has become a technical problem. In the traditional material sorting process, especially for the separation of light and heavy materials, mechanical screening or gravity sorting is often used. These methods have problems such as high energy consumption and large equipment size, and the sorting purity is flawed when the output fluctuates. And when there are heavier substances in the material, the free fall of the material will cause greater impact and wear on the mechanism below, and general air separation equipment is not very suitable, which can easily lead to a reduction in equipment life. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a buffer air selection system.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0005] A buffer air separation system comprises: an air separation box, which is provided with an air separation chamber, a feed port is provided at the top of the air separation chamber, an air inlet is provided on one side of the air separation chamber, and an air outlet channel is provided on the other side; an air inlet pipe is connected to the outer wall of the air separation box and communicated with the air inlet to supply air to the air separation chamber, and the air supply direction is toward the air outlet channel; a buffer baffle is located below the feed port, and the upper end is hinged in the air separation chamber, and is used to buffer the material entering from the feed port; an elastic member is used to elastically support the buffer baffle; a heavy material receiving mechanism partially extends into the air separation box and is located below the feed port and the buffer baffle, and is used to receive heavy materials; a light material receiving mechanism is provided below the outlet of the air outlet channel, and is used to receive light materials.

[0006] Furthermore, it also includes a mounting frame, which is fixedly installed in the air selection chamber, and the upper end of the buffer baffle is hinged to the mounting frame.

[0007] Furthermore, the mounting frame includes a vertical frame and a first cross bar, the first cross bar is fixedly mounted on the vertical frame, a first hinge seat is slidably mounted on the first cross bar, a hinge shaft is provided on the upper end of the buffer baffle, the hinge shaft is rotatably mounted on the first hinge seat along its own axis, a first adjusting member is installed on the first cross bar, and the first adjusting member is used to drive the first hinge seat to slide to achieve position adjustment.

[0008] Furthermore, the first adjusting member is a screw rod, the first hinged seat is provided with a nut adapted to the screw rod, the middle part of the screw rod is provided with an annular groove, the first cross bar is provided with a limiting plate embedded in the annular groove; the side wall of the air separation box is provided with a through hole for one end of the screw rod to extend out of the air separation chamber.

[0009] Furthermore, two limiting plates are provided, and semicircular arc notches are provided on opposite sides of the two limiting plates, and the edges of the semicircular arc notches are embedded in the annular cutting groove.

[0010] Furthermore, the mounting frame also includes a second cross bar, which is fixedly mounted on the vertical frame, and a second hinged seat is slidably mounted on the second cross bar, and the sliding directions of the first hinged seat and the second hinged seat are parallel; a first spring end frame is hinged on the second hinged seat, and a second spring end frame is hinged on the side of the buffer baffle facing the second hinged seat, the elastic member is a compression spring, one end of the compression spring is mounted on the first spring end frame, and the other end is mounted on the second spring end frame, and a second adjusting member is installed on the second cross bar, and the second adjusting member is used to drive the second hinged seat to slide to achieve position adjustment.

[0011] Furthermore, the first spring end is provided with a first retaining ring and a first protrusion, the second spring end is provided with a second retaining ring and a second protrusion, the two ends of the compression spring are respectively against the first retaining ring and the second retaining ring, and the first protrusion and the second protrusion are respectively inserted into the centers of the two ends of the compression spring.

[0012] Furthermore, an air suction hood adjacent to the air outlet channel is provided above the light material receiving mechanism, an air suction pipe is provided at the upper end of the air suction hood, and the air suction pipe and the air inlet pipe are connected via a fan.

[0013] Furthermore, an air guide plate is installed in the air inlet duct; the air guide plate is hinged to the air inlet duct; a pivot shaft is provided at one end of the air guide plate, both ends of the pivot shaft extend out of the air inlet duct and are provided with swing bars, a positioning port is provided on the swing bar, a fixing plate is provided on the outside of the air inlet duct, the fixing plate is provided with an arc-shaped hole with the center of the pivot shaft as the center of the circle, the positioning port can be aligned with any position of the arc-shaped hole and fasteners can be installed to achieve angle adjustment of the air guide plate.

[0014] Furthermore, the buffer baffle is provided with arranged and distributed strip-shaped vias.

[0015] The present invention has the following beneficial effects:

[0016] Through the design of the air separation chamber and the optimization of the air supply direction, light and heavy materials can be quickly separated, thereby improving the sorting efficiency; the integrated design of the air separation box, air inlet pipe, buffer baffle, elastic parts and receiving mechanism makes the entire device compact in structure, occupies a small area, and is easy to install and maintain; the design of the buffer baffle and elastic parts reduces the impact and damage of coarse and heavy materials on the heavy material receiving mechanism, reduces the maintenance frequency, and increases the life of the equipment; the elastic parts enable the buffer baffle to obtain a certain exciting force when impacted by the incoming material, so that the material is not easily stuck in the strip-shaped through-hole, and the fine aggregate adhering to the light material when it rolls down on the baffle can be separated, thereby improving the sorting effect.

[0017] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the lack of wind separation box;

[0021] Figure 3 yes Figure 1 A cross-sectional view of

[0022] Figure 4 Schematic diagram of the installation structure of the buffer baffle;

[0023] Figure 5 It is a partial schematic diagram of the decomposed state of the buffer baffle of the present invention;

[0024] Figure 6 It is a cross-sectional view at the buffer baffle;

[0025] Figure 7 is a schematic diagram of the structure of the first adjusting member and the limiting plate in an exploded state;

[0026] Figure 8 It is a schematic diagram of the structure of the air inlet duct;

[0027] Fig. 9 yes Figure 8 A magnified view of .

[0028] Legend:

[0029] Air separation box 100, air separation chamber 110, feed port 111, air inlet 120, air outlet channel 130;

[0030] Air inlet pipe 200, fixing plate 210, arc-shaped hole 211;

[0031] Buffer baffle 300, hinge shaft 310, second spring end frame 320, second baffle ring 321, second convex column 322, strip-shaped through hole 330;

[0032] Elastic member 400;

[0033] Heavy material receiving mechanism 500 and collecting bucket 510;

[0034] Light material receiving mechanism 600, suction hood 610, suction pipe 611, fan 612;

[0035] The mounting frame 700, the vertical frame 710, the limiting plate 711, the semicircular notch 712, the first cross bar 720, the avoidance opening 721, the first hinge seat 730, the nut 731, the vertical plate 732, the first adjusting member 740, the annular groove 741, the second cross bar 750, the second hinge seat 760, the first spring end frame 770, the first retaining ring 771, the first protruding column 772, and the second adjusting member 780;

[0036] Air guide plate 800, pivot shaft 810, swing bar 820, positioning opening 821;

[0037] Feed conveying mechanism 900. DETAILED DESCRIPTION

[0038] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0041] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0042] Please refer to Figure 1 and Figure 2 A buffer air separation system in a preferred embodiment of the present invention includes an air separation box 100, an air inlet pipe 200, a buffer baffle 300, an elastic member 400, a heavy material receiving mechanism 500 and a light material receiving mechanism 600.

[0043] An air separation chamber 110 is provided in the air separation box 100, and a feed port 111 is provided at the top of the air separation chamber 110. It can be understood that in order to realize automatic feeding, a feed conveying mechanism 900 can be set at the feed port 111, and the output end part of the feed conveying mechanism 900 passes through the feed port 111 and extends into the air separation chamber 110. The feed conveying mechanism 900 can realize material transportation by belt conveying.

[0044] An air inlet 120 is provided on one side of the air separation chamber 110, and an air outlet 130 is provided on the other side; the air outlet 130 can be formed by a pipe member installed on the outer wall of the air separation box 100, and an opening is provided on the side wall of the air separation box 100 corresponding to the air outlet 130, and the air outlet 130 has an outlet to discharge the material. Figure 3 As shown, the air inlet 120 is provided on the right side, the air outlet channel 130 is provided on the left side, and the air outlet channel 130 is communicated with the air selection chamber 110 .

[0045] The air inlet duct 200 is connected to the outer wall of the air separation box 100 and communicates with the air inlet 120 to supply air to the air separation chamber 110, and the air supply direction is toward the air outlet channel 130, so as to blow the light materials toward the air outlet channel 130 and discharge the light materials from the air outlet channel 130.

[0046] The buffer baffle 300 is located below the feed port 111, and the upper end of the buffer baffle 300 is hinged in the air separation chamber 110, and is used to buffer the material entering the feed port 111 to reduce the impact damage of the heavy material on the mechanism below (heavy material receiving mechanism 500).

[0047] The elastic member 400 is used to elastically support the buffer baffle 300 , thereby achieving elastic buffering of the buffer baffle 300 and preventing the buffer baffle 300 from being easily damaged due to rigid collision between the material and the buffer baffle 300 .

[0048] The heavy material receiving mechanism 500 partially extends into the air separation box 100 and is located below the feed port 111 and the buffer baffle 300, and is used to receive heavy materials. It can be understood that a collecting hopper 510 is provided below the buffer baffle 300 in the air separation box 100, and the collecting hopper 510 is located above the heavy material receiving mechanism 500, and is used to guide the heavy materials that have been buffered and fallen by the buffer baffle 300 to the heavy material receiving mechanism 500, so as to achieve the drainage and collection of heavy materials. The heavy material receiving mechanism 500 can be a belt conveyor mechanism, so as to receive the heavy materials and convey the heavy materials out of the air separation box 100. The light material receiving mechanism 600 is provided below the outlet of the air outlet channel 130, and is used to receive light materials. The light material receiving mechanism 600 can be a belt conveyor mechanism, so as to convey the received materials to a suitable position.

[0049] A buffer air separation system in a preferred embodiment provided by the present invention can achieve rapid separation of light and heavy materials and improve sorting efficiency through the design of the air separation chamber 110 and the optimization of the air supply direction; the integrated design of the air separation box 100, the air inlet pipe 200, the buffer baffle 300, the elastic member 400 and the receiving mechanism makes the entire device compact in structure, occupies a small area, and is easy to install and maintain; the design of the buffer baffle 300 and the elastic member 400 reduces the impact and damage of coarse and heavy materials on the heavy material receiving mechanism, reduces the maintenance frequency, and increases the life of the equipment; the elastic member 400 enables the buffer baffle 300 to obtain a certain exciting force when impacted by the incoming material, so that the material is not easily stuck in the strip through hole 320, and the fine aggregate adhered to the light material when it rolls down on the baffle can be separated, thereby improving the sorting effect.

[0050] Reference Figure 2 , Figure 3 and Figure 4 In some embodiments of the present invention, a mounting frame 700 is further included. The mounting frame 700 is fixedly installed in the air selection chamber 110, and the upper end of the buffer baffle 300 is hinged to the mounting frame 700, so as to provide stable support and installation for the buffer baffle 300. The buffer baffle 300 is tilted as a whole, and there is a gap between the tilted lower end of the buffer baffle 300 and the side wall of the air selection chamber 110 for materials to pass through, without completely blocking the materials from falling.

[0051] Reference Figure 2 , Figure 3 and Figure 4In a further embodiment of the present invention, the mounting frame 700 includes a vertical frame 710 and a first cross bar 720. The first cross bar 720 is fixedly mounted on the vertical frame 710. A first hinge seat 730 is slidably mounted on the first cross bar 720. The first cross bar 720 extends horizontally in the left-right direction, that is, the extension direction of the first cross bar 720 is consistent with the arrangement direction of the air inlet 120 and the air outlet channel 130. A hinge shaft 310 is provided at the upper end of the buffer baffle 300. The hinge shaft 310 is rotatably mounted on the first hinge seat 730 along its own axis. The first hinge seat 730 is provided with a hinge hole for the hinge shaft 310 to penetrate. The first cross bar 720 is provided with a first adjusting member 740, which is used to drive the first hinge seat 730 to slide to achieve position adjustment. The position of the buffer baffle 300 is adjusted by adjusting the position of the first hinge seat 730, so that the buffer baffle 300 can be adjusted to a suitable position to achieve buffering and blocking of materials, but does not affect the position of the normal flow of materials. The first cross bar 720 and the first hinge seat 730 are provided with two, so as to achieve the installation of both ends of the hinge shaft 310, making the structural installation more stable.

[0052] Reference Figure 4 , Figure 6 and Figure 7 In a further embodiment of the present invention, the first adjusting member 740 is a screw rod, a nut 731 matching the screw rod is provided on the first hinge seat 730, a ring cut groove 741 is provided in the middle of the screw rod, and a limit plate 711 embedded in the ring cut groove 741 is provided on the first cross bar 720; the limit plate 711 can limit the axial position of the screw rod, but does not affect the rotation of the screw rod, so that the position of the first hinge seat 730 can be adjusted by rotating the screw rod. The side wall of the air separation box 100 is provided with a through hole for one end of the screw rod to extend out of the air separation chamber 110, so that the first adjusting member 740 can be operated outside the air separation box 100 to adjust the position of the buffer baffle 300, which is convenient for adjustment.

[0053] Reference Figure 7 In a further embodiment of the present invention, two limit plates 711 are provided, and semicircular notches 712 are provided on opposite sides of the two limit plates 711. The edges of the semicircular notches 712 are embedded in the annular groove 741. The design of the semicircular notches 712 facilitates the direct withdrawal of the first adjustment member 740 during disassembly. The limit plate 711 is fixed to the end of the first cross bar 720 by fasteners. In order to make the structure compact, the first hinge seat 730 is sleeved on the first cross bar 720. The first cross bar 720 is hollow. The bottom plate of the first hinge seat 730 is provided with a vertical plate 732 extending into the first cross bar 720. The vertical plate 732 is provided with a hole for the screw to pass through. A fixing nut 731 is welded on the vertical plate 732, and the nut 731 is threadedly connected with the screw. The bottom of the first cross bar 720 is provided with an avoidance opening 721 for the vertical plate 732 to move. The limit plate 711 is fixed to the end wall of one end of the first cross bar 720.

[0054] Reference Figure 4 , Figure 6 and Figure 7 In a further embodiment of the present invention, the mounting frame 700 further comprises a second cross bar 750, which is fixedly mounted on the vertical frame 710, and a second hinge seat 760 is slidably mounted on the second cross bar 750, and the sliding directions of the first hinge seat 730 and the second hinge seat 760 are parallel; the second cross bar 750 is provided with two, and the first hinge seat 730 comprises a rod and a sleeve connected to both ends of the rod, and the sleeve is slidably mounted on the second cross bar 750. A first spring end frame 770 is hinged on the second hinge seat 760, and a second spring end frame 320 is hinged on the side of the buffer baffle 300 facing the second hinge seat 760, and the elastic member 400 is a compression spring, one end of which is mounted on the first spring end frame 770, and the other end is mounted on the second spring end frame 320, and a second adjusting member 780 is mounted on the second cross bar 750, and the second adjusting member 780 is used to drive the second hinge seat 760 to slide to achieve position adjustment. The second adjusting member 780 is a screw rod, which is provided with an annular groove. A limiting plate embedded in the annular groove is fixedly installed on the second cross bar 750, so as to realize the axial positioning of the screw rod without affecting the rotation of the screw rod. A connecting plate is provided on the sleeve of the second hinge seat 760, and a nut adapted to the screw rod is fixedly provided on the connecting plate. A through hole aligned with the nut is provided on the connecting plate, so as to realize the position adjustment of the second hinge seat 760. The installation of the compression spring is realized through the first spring end frame 770 and the second spring end frame 320, and the hinge of the first spring end frame 770, the other end of which is installed on the second spring end frame 320, can adjust the position adaptively when the buffer baffle 300 rotates, so that the compression spring is kept in a good working state and the elastic failure caused by large distortion of the compression spring is avoided.

[0055] Reference Figure 5 In a further embodiment of the present invention, the first spring end frame 770 is provided with a first retaining ring 771 and a first boss 772, and the diameter of the first boss 772 is smaller than that of the first retaining ring 771. The second spring end frame 320 is provided with a second retaining ring 321 and a second boss 322, and the diameter of the second boss 322 is smaller than that of the second retaining ring 321. The two ends of the compression spring are respectively against the first retaining ring 771 and the second retaining ring 321. The diameter of the compression spring is smaller than that of the first retaining ring 771 and the second retaining ring 321, so that the elastic force can be transmitted to the buffer baffle 300. The first boss 772 and the second boss 322 are respectively inserted into the centers of the two ends of the compression spring, thereby positioning and limiting the compression spring.

[0056] Reference Figure 1 and Figure 3In a further embodiment of the present invention, an air suction hood 610 adjacent to the air outlet channel 130 is provided above the light material receiving mechanism 600, and an air suction pipe 611 is provided at the upper end of the air suction hood 610, and the air suction pipe 611 and the air inlet pipe 200 are connected through a fan 612. Thus, the gas discharged from the air outlet channel 130 is sucked away, and then flows back to the air inlet pipe 200 to enter the air selection chamber 110, so as to prevent the gas discharged from the air selection chamber 110 from carrying dust particles and polluting the surrounding environment. In addition, a filter screen can be provided on the air suction hood 610 and the air suction pipe 611 to prevent light materials from entering the air inlet pipe 200. The air inlet end of the fan 612 is connected to the air suction pipe 611, and the air outlet end is connected to the air inlet pipe 200, so as to realize circulating air supply and reduce the spillage of pollutants carried by the air.

[0057] Reference Figure 8 and Fig. 9 In a further embodiment of the present invention, an air guide plate 800 is installed in the air inlet pipe 200; the air guide plate 800 is hinged to the air inlet pipe 200; thereby adjusting the screening effect on the material by adjusting the air flow path. The air flow path is adjusted to a position that is suitable for the material and can achieve a better sorting effect. Specifically, the hinge axis is horizontally arranged, so that the upper and lower wind directions can be adjusted by rotating the air guide plate 800. A pivot shaft 810 is provided at one end of the air guide plate 800, and the air guide plate 400 and the pivot shaft 810 can be fixedly connected by fasteners or welding. The two ends of the pivot shaft 810 extend out of the air inlet pipe 200 and are provided with a swing bar 820. The swing bar 820 is provided with a positioning port 821. A fixing plate 210 is provided on the outside of the air inlet pipe 200. The fixing plate 210 is provided with an arc hole 211 with the center of the pivot shaft 810 as the center of the circle. The positioning port 821 can be aligned with any position of the arc hole 211 and fasteners can be installed to achieve the angle adjustment of the air guide plate 800. The fasteners can be bolts and nuts. By changing the alignment position of the positioning port 821 and the arc hole 211, the angle adjustment of the air guide plate 800 is achieved, and the fasteners are used to achieve the fixation after the angle adjustment. The positioning port 821 is a U-shaped notch with a certain length. As long as it is aligned with the arc hole 211 within its length range, the requirements for processing accuracy are reduced. During installation, the pivot shaft 810 can be installed first. After the hinge shaft is installed in place, the swing bar 820 can be fixed to the pivot shaft 810 by fasteners or welding. The fixing plate 210 is connected and fixed to the outer wall of the air inlet duct 200 by an overhead rod 220, so that there is a distance between the fixing plate 210 and the outer wall of the air inlet duct 200, so as to facilitate the accommodation and operation of the bolt head or nut. There are multiple air guide plates 800 arranged vertically to increase the adjustment coverage.

[0058] Reference Figure 4In a further embodiment of the present invention, the buffer baffle 300 is provided with arranged and distributed strip-shaped through holes 330. Thus, heavy materials with smaller particle sizes can directly pass through the strip-shaped through holes 330 without buffering and deceleration, and the strip-shaped through holes 330 can also allow wind to pass through to blow light materials toward the air outlet channel 130.

[0059] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A buffer air selection system, characterized in that: include: A wind selection box (100) is provided with a wind selection chamber (110) therein, a feed port (111) is provided at the top of the wind selection chamber (110), an air inlet (120) is provided at one side of the wind selection chamber (110), and an air outlet channel (130) is provided at the other side; An air inlet pipe (200) is connected to the outer wall of the air separation box (100) and communicates with the air inlet (120) to supply air to the air separation chamber (110), and the air supply direction is toward the air outlet channel (130); A buffer baffle (300) is located below the feed inlet (111), with an upper end hinged in the air selection chamber (110) and used to buffer the material entering the feed inlet (111); An elastic member (400) for elastically supporting the buffer baffle (300); A heavy material receiving mechanism (500), partially extending into the air separation box (100) and located below the feed inlet (111) and the buffer baffle (300), for receiving heavy materials; The light material receiving mechanism (600) is arranged below the outlet of the air outlet channel (130) and is used to receive the light material.

2. The buffer air selection system according to claim 1, characterized in that: It also includes a mounting frame (700), wherein the mounting frame (700) is fixedly mounted in the air selection chamber (110), and the upper end of the buffer baffle (300) is hinged to the mounting frame (700).

3. The buffer air selection system according to claim 2, characterized in that: The mounting frame (700) comprises a vertical frame (710) and a first cross bar (720), wherein the first cross bar (720) is fixedly mounted on the vertical frame (710), a first hinge seat (730) is slidably mounted on the first cross bar (720), a hinge shaft (310) is provided at the upper end of the buffer baffle (300), and the hinge shaft (310) is rotatably mounted on the first hinge seat (730) along its own axis, and a first adjusting member (740) is mounted on the first cross bar (720), and the first adjusting member (740) is used to drive the first hinge seat (730) to slide to achieve position adjustment.

4. The buffer air selection system according to claim 3, characterized in that: The first adjusting member (740) is a screw rod, the first hinge seat (730) is provided with a nut (731) adapted to the screw rod, the middle part of the screw rod is provided with an annular groove (741), and the first cross bar (720) is provided with a limiting plate (711) embedded in the annular groove (741); the side wall of the air separation box (100) is provided with a through hole for one end of the screw rod to extend out of the air separation chamber (110).

5. The buffer air selection system according to claim 4, characterized in that: Two limiting plates (711) are provided, and semi-circular arc notches (712) are provided on opposite sides of the two limiting plates (711), and the edges of the semi-circular arc notches (712) are embedded in the annular groove (741).

6. The buffer air selection system according to claim 3, characterized in that: The mounting frame (700) also includes a second cross bar (750), which is fixedly mounted on the vertical frame (710); a second hinge seat (760) is slidably mounted on the second cross bar (750); the sliding directions of the first hinge seat (730) and the second hinge seat (760) are parallel; a first spring end frame (770) is hinged on the second hinge seat (760); a second spring end frame (320) is hinged on the side of the buffer baffle (300) facing the second hinge seat (760); the elastic member (400) is a compression spring, one end of which is mounted on the first spring end frame (770) and the other end is mounted on the second spring end frame (320); a second adjustment member (780) is mounted on the second cross bar (750); the second adjustment member (780) is used to drive the second hinge seat (760) to slide to achieve position adjustment.

7. The buffer air selection system according to claim 6, characterized in that: The first spring end frame (770) is provided with a first retaining ring (771) and a first convex column (772), and the second spring end frame (320) is provided with a second retaining ring (321) and a second convex column (322). The two ends of the compression spring are respectively against the first retaining ring (771) and the second retaining ring (321), and the first convex column (772) and the second convex column (322) are respectively inserted into the centers of the two ends of the compression spring.

8. The buffer air selection system according to claim 1, characterized in that: An air suction hood (610) adjacent to the air outlet channel (130) is provided above the light material receiving mechanism (600), an air suction pipe (611) is provided at the upper end of the air suction hood (610), and the air suction pipe (611) and the air inlet pipe (200) are connected via a fan (612).

9. The buffer air selection system according to claim 1, characterized in that: An air guide plate (800) is installed in the air inlet pipe (200); the air guide plate (800) is hinged to the air inlet pipe (200); a pivot shaft (810) is provided at one end of the air guide plate (800), both ends of the pivot shaft (810) extend out of the air inlet pipe (200) and are provided with a swing bar (820), a positioning opening (821) is provided on the swing bar (820), a fixing plate (210) is provided on the outside of the air inlet pipe (200), the fixing plate (210) is provided with an arc-shaped hole (211) with the center of the pivot shaft (810) as the center of the circle, the positioning opening (821) can be aligned with any position of the arc-shaped hole (211) and a fastener can be installed to achieve angle adjustment of the air guide plate (800).

10. The buffer air selection system according to claim 1, characterized in that: The buffer baffle (300) is provided with arranged and distributed strip-shaped through holes (330).

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