A high-efficiency malt destoner with circulating air

Abstract

The present invention discloses a high-efficiency malt destoning machine with circulating air, comprising: an operating box with a screen bed fixedly installed therein; an elastic support mechanism and a vibration mechanism mounted on opposite sides of the operating box so as to be suspended in the air; and an air supply system for blowing air into the operating box, wherein the screen bed comprises a first screen body arranged horizontally to receive falling materials; the first screen body comprises a first screen plate arranged at intervals in the horizontal direction, and two second screen plates arranged in the intervals and combined to form a tower-shaped structure, wherein the plurality of groups of first and second screen plates constitute a screen surface. The high-efficiency malt destoning machine with circulating air provided by the invention has a simple structure, and utilizes a plurality of groups of the second screen plates arranged in a tower-shaped structure so that the intervals between the two second screen plates do not lie within the intervals between the first screen plates arranged at intervals. The combination of the two second screen plates and the first screen plate forms a bucket-shaped structure with an inverted isosceles trapezoidal structure, which ensures the screening efficiency of the primary screening while intercepting stones larger than the malt specifications.

Description

Technical Field

[0001] The invention relates to a circulating air stone remover, in particular to a high-efficiency malt stone remover with circulating air. Background Art

[0002] Circulating air stoners are primarily used for threshing grain crops, separating husks and stones from the crops. They consist of an elastic support mechanism, a vibrating mechanism, a feeding mechanism, an air supply system, and a sieve bed. The feeding mechanism feeds the crops to be screened onto the sieve bed, while the elastic support mechanism supports the sieve bed to maintain its tilted position. The vibrating mechanism vibrates the sieve bed, separating the crops from the stones. The air supply system blows air onto the sieve bed, removing the husks from the grain.

[0003] The detailed operating principle of the above-mentioned circulating air destoner can be combined with the disclosure (announcement) number: CN218108434U, disclosure (announcement) date: 2022-12-23, which discloses a high-efficiency malt destoner with circulating air, and the disclosure (announcement) number: CN219309362U, disclosure (announcement) date: 2023-07-07, which discloses a top-down arranged grain impurity removal and destoner.

[0004] In the two existing technologies mentioned above, the main principle is to use a vibrating screen bed to throw crops into the air, and then the circulating air separates the husks from the crops in the air. The separation of stones and granular crops relies on the screen bed. In order to optimize the separation effect of stones and granular crops, multiple layers of screen beds with different mesh sizes can be arranged vertically. Through layer-by-layer screening, the separation of stones and granular crops can be achieved. Therefore, the layer-by-layer separation mainly includes two aspects:

[0005] The first step is to discharge the granular crops through the sieve holes of the sieve bed and retain the stones that are larger than the granular crops. This step is the primary screening.

[0006] The second aspect is to use small holes to retain stones smaller than the specifications of grain crops, and the grain crops are separated from the inclined screen bed. This step is fine screening.

[0007] During the primary screening process, the sieve bed is shaken to throw stones and granular crops up and then fall down. Because the weight of stones is greater than that of granular crops, the stones must fall down first. The falling of stones will inevitably block the holes of the sieve bed, thereby reducing the screening effect of the primary screening. Summary of the Invention

[0008] The purpose of this invention is to provide a high-efficiency malt stone remover with circulating air to solve the above problems.

[0009] In order to achieve the above object, the present invention provides the following technical solution: a high-efficiency malt destoner with circulating air, comprising:

[0010] An operating box with a sieve bed fixedly installed inside;

[0011] an elastic supporting mechanism and a vibrating mechanism mounted on opposite sides of the work box so as to allow the work box to be suspended;

[0012] An air supply system for blowing air into the working box, wherein the screen bed comprises a first screen body arranged horizontally to receive the falling material;

[0013] The first screen body includes first screen plates arranged at intervals in the horizontal direction, and two second screen plates arranged in the intervals and combined to form a tower-shaped structure, wherein the plurality of groups of first screen plates and second screen plates constitute a screen surface;

[0014] Among them, a second sieve plate is arranged on both sides of the first sieve plate, and the cross section of the three combined is an inverted isosceles trapezoidal structure;

[0015] The sieve holes on the first sieve plate and the second sieve plate are consistent with the specifications of malt.

[0016] Preferably, the second screen plate is bent in a step shape, and each step is chamfered.

[0017] Preferably, the first sieve plate is arranged obliquely, including a high position and a low position, and the sieve bed includes a receiving and discharging trough for receiving the above-mentioned low-position falling materials.

[0018] Preferably, the sieve bed further comprises a plurality of second sieve bodies arranged obliquely, and the second sieve bodies arranged adjacent to the first sieve bodies are used to receive the material falling after being screened by the second sieve plate.

[0019] Preferably, the second screen plate is rotated and the first screen plate slides horizontally, and the two screen plates maintain the following two-station movable arrangement:

[0020] At the first station, the two second sieve plates rotate relative to each other to release the tower structure, and are respectively combined with the adjacent second sieve plates of another adjacent set of the released tower structure to form a tower structure again;

[0021] At the second station, the first screen plate is horizontally displaced to separate from the covering of the two second screen plates which are reassembled into a tower shape.

[0022] Preferably, the number of the first sieve plates is two, and the side walls are in contact with each other in a default state. During the rotation, the second sieve plate sweeps over an adjacent surface of the first sieve plate, and there is a tangent line with the second sieve plate that is closest to the first sieve plate.

[0023] Preferably, a rotating shaft is further included, and the rotating shaft passes through the through holes centrally opened on the sides of the plurality of second sieve plates so as to be connected in series.

[0024] Preferably, the second sieve plate is rotatably disposed on the rotating shaft;

[0025] It also includes a driving shaft that passes through the rotating shaft of the hollow structure, which is engaged with the second screen plate in a keyway and causes the plurality of second screen plates to turn over in sequence.

[0026] Preferably, the maximum angle between adjacent second sieve plates during the turning process is 30°-35°.

[0027] Preferably, the plurality of coaxial second sieve plates are arranged at intervals, and an elastic memory connection portion with sieve holes formed on the surface is connected between every two adjacent second sieve plates.

[0028] In the above technical scheme, the present invention provides a high-efficiency malt destoning machine with circulating air, which has the following beneficial effects: two second sieve plates combined in a tower-shaped structure are arranged between each adjacent first sieve plate, so that the second sieve plates arranged on both sides of the first sieve plate form a bucket-shaped structure with an inverted isosceles trapezoidal cross-section, which vibrates in conjunction with the vibration mechanism to produce tremors, so that the falling material is thrown up, and then the stones fall onto the first sieve plate, and the fallen malt and stones smaller than the malt are discharged into the next level of screening of the sieve bed through the second sieve plate, avoiding the screen bed holes being blocked due to the falling stones, thereby reducing the screening effect of the primary screening, and ensuring the screening efficiency of the primary screening on the basis of intercepting stones larger than the malt specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0030] Figure 1 A schematic structural diagram of a sieve bed provided in an embodiment of the present invention;

[0031] Figure 2 A schematic cross-sectional view of a first screen body provided in an embodiment of the present invention;

[0032] Figure 3 A schematic structural diagram of side I of the crossbeam frame of the first screen body provided in an embodiment of the present invention;

[0033] Figure 4 A schematic structural diagram of the II side of the crossbeam frame of the first screen body provided in an embodiment of the present invention;

[0034] Figure 5 A schematic structural diagram of a first sieve plate and an elastic memory connection portion provided in an embodiment of the present invention;

[0035] Figure 6 A schematic diagram of the assembly relationship structure of the first screen plate, the drive shaft and the rotating shaft provided in an embodiment of the present invention;

[0036] Figure 7 A schematic diagram of the implementation structure of the multiple first sieve plates provided by the embodiment of the present invention being flipped in sequence;

[0037] Figure 8 A schematic diagram of the rotation trajectory of two second sieve plates combined into a tower-shaped structure and the movement of two first sieve plates provided in an embodiment of the present invention;

[0038] Figure 9 A schematic diagram of the rotation trajectory of the two second sieve plates and the movement of the two first sieve plates of the tower structure provided in an embodiment of the present invention.

[0039] Description of reference numerals:

[0040] 1. Sieve bed; 11. First sieve body; 111. First sieve plate; 1111. Tooth plate; 112. Second sieve plate; 1121. Synchronizing block; 113. Elastic memory connection; 114. Crossbeam; 12. Second sieve body; 2. Rotating shaft; 3. Drive shaft; 31. Raised portion; 4. First synchronous belt; 41. First synchronous wheel; 5. First gear; 51. Second gear; 52. Third gear; 53. Second synchronous belt. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0042] like Figure 1-9 As shown, a high-efficiency malt destoner with circulating air comprises:

[0043] An operation box in which the sieve bed 1 is fixedly installed;

[0044] An elastic support mechanism and a vibration mechanism are mounted on opposite sides of the work box to allow it to be suspended in the air;

[0045] An air supply system for blowing air into the working box. This is prior art, and the present invention aims to design the sieve bed 1 to achieve substantial improvements. In detail: the sieve bed 1 includes a first sieve body 11 arranged horizontally to receive the falling material;

[0046] The first screen body 11 includes first screen plates 111 spaced apart in the horizontal direction, and two second screen plates 112 arranged in the spaced apart positions and combined to form a tower-shaped structure. The plurality of groups of first screen plates 111 and second screen plates 112 constitute a screen surface.

[0047] Among them, the second sieve plates 112 are arranged on both sides of a first sieve plate 111, and the cross section of the three combined is an inverted isosceles trapezoidal structure;

[0048] The sieve holes on the first sieve plate 111 and the second sieve plate 112 are consistent with the specifications of malt.

[0049] Specific, combined Figure 1 As can be seen, the sieve bed 1 also includes a plurality of inclined second sieve bodies 12. The second sieve bodies 12, arranged adjacent to the first sieve body 11, are used to receive material falling through the second sieve plate 112. In this embodiment, the plurality of second sieve bodies 12 constitute a fine screen, while the first sieve body 11 serves as a primary screen.

[0050] During operation, the material to be screened, i.e., crops, is fed into the work box by a feeding system at the top of the work box and then falls into the first sieve body 11. The vibration mechanism causes the work box to vibrate, and the sieve bed 1 vibrates synchronously with the work box, throwing the crops into the air. The air supply system then continuously blows the crops into the work box. The air entering the work box forms a circulating air due to the work box structure. The circulating air separates the chaff from the crops that are still suspended in the air and finally discharges them from the work box.

[0051] It should be noted that the work box, elastic support mechanism, vibration mechanism, air supply system and feeding system in the above embodiments are all common technical knowledge of those skilled in the art, and their detailed operating principles can be learned by combining the patents in the background technology, so they will not be described in detail.

[0052] Further, combined Figure 2 As can be seen, in the embodiment, two second sieve plates 112 are arranged in a tower-shaped structure between the first sieve plates 111 arranged at intervals as a module. Then, the entire screen surface is composed of multiple modules, and a cross-section with an inverted isosceles trapezoidal structure is formed between each two tower-shaped structures, i.e., a bucket with an inverted isosceles trapezoidal structure. When crops enter the bucket, they are thrown into the air by vibration. At the same time, the air supply system blows downward (the air outlet corresponds to the screen surface of the first sieve body 11). Figure 2 As shown, the airflow entering the bucket will diffuse outward along the guidance of the two waist parts (the second sieve plates 112) after encountering the obstruction of the first sieve plate 111 (as shown in FIG. Figure 2As shown, the airflow disperses the tossed crops, increasing their spread compared to conventional crops that are tossed due to turbulence, making it easier to separate the husks and shrunken malt within the crops. Qualified malt and stones then fall due to their own weight. Since the tossed crops are dispersed by the airflow, they are evenly spread out as they fall. Qualified malt and stones roll along the surface of second sieve plate 112 and onto first sieve plate 111 during their descent. Qualified malt will pass through second sieve plate 112 and enter second sieve plate 112. Similarly, qualified malt that has fallen into first sieve plate 111 will also pass through second sieve plate 112. However, stones larger than the qualified malt size will be intercepted by first sieve plate 111 and retained in the bucket.

[0053] Because the sieve holes on the first sieve plate 111 and the second sieve plate 112 are consistent with the specifications of the malt, stones smaller than the qualified malt will also pass through the first sieve plate 111 and the second sieve plate 112 and enter the fine screening stage, screening out small stones smaller than the qualified malt.

[0054] In the above technology, two second sieve plates 112 are arranged between each adjacent first sieve plate 111 in a tower-shaped structure, so that the second sieve plates 112 arranged on both sides of a first sieve plate 111 form a bucket-shaped structure with an inverted isosceles trapezoidal cross-section. The vibration mechanism vibrates to produce tremors, so that the falling material is thrown up, and then the stones fall onto the first sieve plate 111, and the fallen malt and stones smaller than the malt are discharged into the next level of screening of the sieve bed 1 through the second sieve plate 112, avoiding the holes of the sieve bed 1 being blocked by the falling stones, thereby reducing the screening effect of the primary screening. On the basis of intercepting stones larger than the malt specifications, the screening efficiency of the primary screening is guaranteed.

[0055] As a further embodiment provided by the present invention, the second screen plate 112 is bent into a step shape, and each step is chamfered.

[0056] Specific, combined Figure 2 It can be seen that the second sieve plate 112 in the embodiment is formed by bending a complete iron plate into a step with a chamfered step shape, the purpose of which is to expand the contact between the falling crops and the second sieve plate 112, and the airflow blocked by the first sieve plate 111 and flowing along the plate surface of the first sieve plate 111 will form a wind screen due to each step, the purpose of which is to slow down the downward speed of the crops falling on the second sieve plate 112, so that the downward speed is sufficient to ensure that the crops will pass through the sieve holes of the first sieve plate 111.

[0057] As another embodiment further provided by the present invention, the first screen plate 111 is arranged obliquely, including a high position and a low position, and the screen bed 1 includes a receiving and discharging trough for receiving the above-mentioned low-position falling materials.

[0058] Specifically, in the above embodiment, the crops that fall into the bucket are mainly stones. Therefore, when the screen bed 1 vibrates, the stones accumulated on the first screen plate 111 will inevitably be driven to move from a high position to a low position under the vibration, and finally fall into the receiving and discharging chute, and then discharged from the working box.

[0059] The first screen plate 111 in the above embodiment includes a crossbeam frame 114, which is composed of parallel crossbeams and longitudinal beams symmetrically arranged between the two crossbeams. The receiving and discharging trough in the above embodiment is welded to the side wall of the crossbeam.

[0060] It should be noted that the stones that fall into the receiving and discharging chute and are discharged from the working box in the embodiment contain a certain proportion of malt, but within the allowable error range, they can be reprocessed by a secondary rework.

[0061] As another embodiment further provided by the present invention, the second screen plate 112 is arranged to rotate, and the first screen plate 111 slides horizontally, and the two screen plates maintain the following two-station movable arrangement:

[0062] At the first station, the two second sieve plates 112 rotate relative to each other to release the tower structure, and then are reassembled with the adjacent second sieve plates 112 of another adjacent set of the tower structure released to form a tower structure;

[0063] At the second station, the first sieve plate 111 is displaced horizontally to be separated from the covering of the two second sieve plates 112 which are reassembled into a tower shape.

[0064] Furthermore, there are two first sieve plates 111 , and the side walls are in contact with each other in a default state. During the rotation, the second sieve plate 112 sweeps over the surface of an adjacent first sieve plate 111 , and there is a tangent line with the second sieve plate 112 at the shortest distance therebetween.

[0065] Specifically, two beams on the beam frame 114 are provided with linearly spaced chute arrangements, and the two second sieve plates 112 are located in the beam frame 114, with both ends sliding in the chute arrangements. Figure 8 The figure is for reference only. After the predetermined time is reached, the second sieve plate 112 is pressed Figure 8 The flip moving path shown is flipped, and after the current tower structure is released, a new tower structure is formed with two adjacent second sieve plates 112 that have released the tower structure, thereby completing the first station, and combining Figure 9 When the new tower structure is completely completed, the two first sieve plates 111 will separate toward the two sides of the new tower structure and finally reach the end of the chute where they are located, and move closer to and fit with the end face of the adjacent first sieve plate 111 in the adjacent chute, thereby filling the gap between the two tower structures and completing the second workstation. Figure 2 The status shown.

[0066] In the second switching process, the switched form is simply switched back to the initial form, that is, the two first sieve plates 111 in the same chute return to the central position and fit together to fill the gap between the two tower structures, that is, the second station. Figure 2 The status shown.

[0067] During each switching process, combined Figure 8 and Figure 9 It can be seen that the renovation direction of the two second screen plates 112 is to sweep and push from the side edges of the two first screen plates 111 in the assembled state toward the joint between the two first screen plates 111, thereby pushing the stones that are just stuck in the sieve holes of the first screen plates 111 toward the joint, thereby preventing the sieve holes of the first screen plates 111 from becoming inoperative due to the stones being stuck in the sieve holes, and avoiding the trouble of manually cleaning the stones stuck in the sieve holes later.

[0068] Furthermore, in the embodiment, driving the two first sieve plates 111 to flip and the two second sieve plates 112 to slide can be achieved by separately connecting the multiple first sieve plates 111 and the second sieve plates 112 through a synchronous belt or chain, and then separately driving the two synchronous belts or chains using a motor to achieve the above-mentioned actions, which can be achieved by each group of two first sieve plates 111 and two second sieve plates 112 separately driving the synchronous belt or chain through a motor, or by any driving method known to technicians.

[0069] As another embodiment further provided by the present invention, it further includes a rotating shaft 2, which is penetrated by a through hole opened in the center of the side surface of the plurality of second sieve plates 112 so as to be connected in series.

[0070] Furthermore, the second screen plate 112 is rotatably disposed on the rotating shaft 2;

[0071] It also includes a driving shaft 3 that passes through the rotating shaft 2 of the hollow structure, which is engaged with the second sieve plates 112 in a keyway and causes the multiple second sieve plates 112 to turn over in sequence.

[0072] Furthermore, the maximum angle between adjacent second sieve plates 112 during the turning process is 30°-35°.

[0073] Specifically, the rotating shaft 2 is a longitudinal beam of the crossbeam frame 114 , and the driving shaft 3 is mounted on the rotating shaft 2 via a ball bearing.

[0074] like Figure 3 and Figure 4As shown, the two beams of the beam frame 114 are defined as beam I and beam II. Each module includes two drive shafts 3, one defined as a and one defined as b, and the second gear 51 is fixedly mounted on b.

[0075] The second gear 51 meshes with the third gear 52 rotatably mounted on the beam 1. A and the third gear 52 are connected by a second synchronous belt 53, driving a and b to rotate in opposite directions. Then, a in the next module is connected to the third gear 52 in the previous module via the second synchronous belt 53.

[0076] Secondly, among the plurality of second sieve plates 11 arranged in sequence, the first flipped second sieve plate 112 is the starting end, and the last flipped second sieve plate 112 is the ending end. Figure 4 As can be seen, a first gear 5 is rotatably mounted on beam II. This first gear 5 meshes with a toothed plate 1111 welded to the portion of the first screen plate 111 extending beyond beam II. A steel rod is welded to one end of the second screen plate 112 at its terminal end. This rod extends from an arcuate groove in beam II and is then connected to the axis of a first synchronous pulley 41 rotatably mounted on beam II. The first synchronous pulley 41 and the first gear 5 are driven by a first synchronous belt 4.

[0077] Furthermore, the drive shaft 3 is welded with multiple groups of protrusions 31, and the multiple groups of protrusions 31 are arranged in a spiral, and a circular groove is opened in the second screen plate 112, and a synchronization block 1121 is set in the circular groove. The protrusions 31 extend through the waist groove opened on the rotating shaft 2 and form a pick-and-drop fit with the synchronization block 1121. That is, when the drive shaft 3 rotates, the multiple groups of protrusions 31 will successively contact the synchronization blocks 1121 in multiple second screen plates 112, thereby driving the second screen plate 112 at the starting end to rotate. If the angle between the second screen plate 112 at the starting end and the second screen plate 112 of the next level is 30°-35°, then the second screen plate 112 of the next level will also be synchronously flipped under the push of the synchronization block 1121 by the protrusions 31, and in turn, finally drive the second screen plate 112 at the terminal end to flip and perform the tower-type switching action of the first station. The principle of its flipping can be consistent with the flipping drive principle of the character wheel.

[0078] When the second sieve plate 112 at the terminal end is flipped, the first gear 5 is driven by the first synchronous belt 4 to drive the first sieve plate 111 to slide and perform switching. The flipping principle can be consistent with the flipping driving principle of the character wheel.

[0079] It should be noted that, in the embodiment, a stepper motor is installed on the beam I, and the output end of the stepper motor is connected to a through a second synchronous belt 53. When the stepper motor is driven, it will simultaneously drive multiple groups of a and b to rotate, so that the second sieve plate 112 of the starting end of multiple modules is flipped, and then in the process of flipping in sequence, finally drive the second sieve plate 112 of the terminal end to flip and switch.

[0080] Secondly, the stepper motor is driven to rotate in the forward direction once every 15 minutes, and then to rotate in the reverse direction once every 15 minutes, and this cycle repeats. The control procedure is common technical knowledge for those skilled in the art, so it will not be described in detail.

[0081] As a further optimal embodiment provided by the present invention, a plurality of coaxial second sieve plates 112 are arranged at intervals, and an elastic memory connection portion 113 with sieve holes formed on the surface is connected between every two adjacent second sieve plates 112 .

[0082] Specifically, in the above embodiment, an elastic memory connection portion 113 is passed between every two adjacent second sieve plates 112 , and the sidewalls of the elastic memory connection portion 113 are tangent to the sidewalls of the rotating shaft 2 , that is, the rotating shaft 2 does not pass through the elastic memory connection portion 113 .

[0083] During the switching process of the first station, the second sieve plate 112 at the starting end is flipped, and then in the process of flipping in sequence, the second sieve plate 112 at the terminal end is finally driven to flip and switch. Because each second sieve plate 112 is installed with the rotating shaft 2 through a rotary damping bearing, and the second sieve plate 112 of the next level remains stationary due to the damping force provided by the damping bearing (it will deflect to a certain angle due to the twisting force of the elastic memory connection part 113, but it is relatively small, and the detailed data will not be expanded, but it is within the allowable error range), so when the first and second sieve plates 112 are flipped, the elastic memory connection part 113 will be twisted, and when it is flipped to the second sieve plate 112 of the next level, the maximum angle is 30°-35°, and the elastic memory connection part 113 is completely twisted, so when the first and second sieve plates 112 sweep and push the stones, the stones will be pushed to the second and second sieve plates 112 due to the propulsion force generated by the twisting direction of the elastic memory connection part 113. Thereby, the stones that just fit into the sieve holes of the first sieve plate 111 are pushed toward the joint, and the multiple second sieve plates 112 are sequentially moved, thereby achieving the propulsion generated by the sequential twisting and deformation of the elastic memory connection parts 113 to push the stones on the first sieve plate 111 from a high position to a low position, that is, to produce an effect similar to that of an auger spiral feeding.

[0084] It should be noted that the elastic memory connection portion 113 is made of high-elasticity rubber, and its elastic coefficient needs to meet the technical purpose of this application, but the detailed elastic coefficient will not be disclosed excessively.

[0085] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A high-efficiency malt destoner with circulating air, comprising: An operating box with a sieve bed fixedly installed inside; an elastic supporting mechanism and a vibrating mechanism mounted on opposite sides of the work box so as to allow the work box to be suspended; An air supply system for blowing air into a working box, characterized in that the sieve bed comprises a first sieve body arranged horizontally to receive falling materials; The first screen body includes first screen plates arranged at intervals in the horizontal direction, and two second screen plates arranged in the intervals and combined to form a tower-shaped structure, wherein the plurality of groups of first screen plates and second screen plates constitute a screen surface; Among them, a second sieve plate is arranged on both sides of the first sieve plate, and the cross section of the three combined is an inverted isosceles trapezoidal structure; The sieve holes on the first sieve plate and the second sieve plate are consistent with the specifications of malt; The second screen plate is bent into a step shape, and each step is chamfered; The second sieve plate is rotated and the first sieve plate slides horizontally, and the two sieve plates maintain the following two-station movable settings: At the first station, the two second sieve plates rotate relative to each other to release the tower structure, and are respectively combined with the adjacent second sieve plates of another adjacent set of the released tower structure to form a tower structure again; At the second station, the first sieve plate is horizontally displaced to separate from the covering of the two second sieve plates which are reassembled into a tower shape; It also includes a rotating shaft, which is passed through the through holes centrally opened on the sides of the plurality of second sieve plates so as to be connected in series; The plurality of coaxial second sieve plates are arranged at intervals, and an elastic memory connection portion with sieve holes formed on the surface is connected between every two adjacent second sieve plates.

2. The high-efficiency malt stoner with circulating air according to claim 1, characterized in that: The first screen plate is arranged in an inclined manner, including a high position and a low position, and the screen bed includes a receiving and discharging trough for receiving the above-mentioned low-position falling materials.

3. The high-efficiency malt destoner with circulating air according to claim 1, characterized in that: The sieve bed further comprises a plurality of second sieve bodies arranged obliquely, wherein the second sieve bodies arranged adjacent to the first sieve bodies are used to receive the material falling after being screened by the second sieve plate.

4. The high-efficiency malt destoner with circulating air according to claim 1, characterized in that: There are two first sieve plates, and the side walls are in contact with each other in a default state. During the rotation process, the second sieve plate sweeps over an adjacent surface of the first sieve plate, and there is a tangent line with the second sieve plate that is closest to the first sieve plate.

5. The high-efficiency malt stoner with circulating air according to claim 1, characterized in that: The second screen plate is rotatably disposed on the rotating shaft; It also includes a driving shaft that passes through the rotating shaft of the hollow structure, which is engaged with the second screen plate in a keyway and causes the plurality of second screen plates to turn over in sequence.

6. The high-efficiency malt destoning machine with circulating air according to claim 5, characterized in that: The maximum angle between adjacent second sieve plates during the turning process is 30°-35°.

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