Screening ship and corn germ selecting machine

Abstract

The invention provides a screening ship and a corn germ selector, the screening ship comprises a screening ship body and a negative pressure fan cover, the screening ship body is used for being fixedly connected to a flexible base, and a vibration motor is arranged on the screening ship body; the bottom of the screening ship body is provided with a screen which gradually rises in the first direction, the negative-pressure fan cover is arranged above the screening ship body in a sealing and covering mode, a screening cavity is formed between the negative-pressure fan cover and the screen, and the top of one side of the negative-pressure fan cover is provided with a feeding pipe communicated with the screening cavity; the sifting cavity is provided with a first cavity wall and a second cavity wall which form an included angle, the second cavity wall is far away from the feeding pipe and is parallel to the first direction, and the distance between the first cavity wall and the second cavity wall is gradually reduced in the first direction; a plurality of first discharging ports are distributed in the first cavity wall at intervals, and a plurality of second discharging ports which are sequentially and adjacently distributed are formed between the edge of the side, close to the second cavity wall, of the screen and the second cavity wall. According to the screening ship and the corn germ selecting machine, the productivity of the corn germ selecting machine can be improved on the basis that the corn germ selecting quality is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of grain processing machinery, and in particular relates to a screening ship and a corn embryo selecting machine. Background Art

[0002] Deep processing of corn is a concrete manifestation of optimizing industrial structure, extending industrial chain, and increasing product added value. It is also an important measure to solve the problems of agriculture, rural areas and farmers. The main products of deep processing of corn are corn starch, corn protein powder, corn starch sugar, corn oil, edible alcohol, fuel ethanol, xylitol, protein feed, fiber feed, etc. Among them, separating the germ and endosperm of corn is the basis for deep processing of corn, especially for the production of corn germ oil and corn starch sugar, the performance of corn embryo separator is crucial.

[0003] At present, with the continuous expansion of the market scale of corn deep processing, higher requirements are put forward for the production capacity of corn germ selection machines. It is known that the maximum production capacity of existing corn germ selection machines is about two tons per hour. In order to increase the overall production capacity, the only way is to increase the number of equipment. However, this method will greatly increase the equipment cost and production energy consumption, which is not the best solution. Therefore, it is currently necessary to demand solutions from the perspective of improving the single capacity of equipment on the basis of ensuring the quality of germ selection. Summary of the invention

[0004] The embodiment of the present invention provides a screening ship and a corn embryo selection machine, aiming to improve the production capacity of the corn embryo selection machine on the basis of ensuring the quality of corn embryo selection.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: in the first aspect, a screen boat is provided, comprising a screen boat body and a negative pressure wind hood, the screen boat body is used to be fixedly connected to a flexible base, and a vibration motor is provided on the screen boat body; a screen gradually rising along a first direction is provided at the bottom of the screen boat body, a negative pressure wind hood sealing cover is arranged above the screen boat body and forms a screening chamber with the screen, and a feed pipe connected to the screening chamber is provided on the top of one side of the negative pressure wind hood; the screening chamber has a first cavity wall and a second cavity wall forming an angle, the second cavity wall is away from the feed pipe and parallel to the first direction, and the distance between the first cavity wall and the second cavity wall gradually decreases along the first direction; wherein, a plurality of first discharge ports are spaced apart on the first cavity wall, and a plurality of second discharge ports distributed adjacent to each other in sequence are formed between an edge of the side of the sieve close to the second cavity wall and the second cavity wall.

[0006] In combination with the first aspect, in a possible implementation, the screening chamber has a third chamber wall, which is far away from the feed pipe and has two ends connected to the first chamber wall and the second chamber wall respectively; wherein, a return plate is provided on the third chamber wall, which is spaced apart from the screen above and below and is used to block materials blown up by the wind.

[0007] In some embodiments, a stone blocking box is provided at the position where the second cavity wall and the third cavity wall meet, the side wall of the stone blocking box is sealed against the material return plate, and the stone blocking box is provided with a stone discharge opening on the side wall facing the screening cavity.

[0008] Exemplarily, the return plate is hinged to the third cavity wall, and an adjusting screw is connected to the return plate. The adjusting screw passes through the negative pressure air hood and is screwed to the negative pressure air hood.

[0009] For example, a guide plate is provided on the screen boat body, which is bent upward at the edge of the screen to form a first cavity wall, and a first interlayer is formed between the inner wall of one side of the negative pressure wind hood and the guide plate. A plurality of partitions are spaced apart in the first interlayer, and first material discharge channels corresponding to each first discharge port are formed between adjacent partitions.

[0010] In a possible implementation, each first material discharge channel is provided with an adjustment plate, which blocks at least a portion of the first material discharge port and is used to slide up and down to adjust the opening of the first material discharge port.

[0011] In some embodiments, a rotating rod is rotatably connected to the adjustment plate, the rotating rod passes upward through the negative pressure air hood and is screwed to the negative pressure air hood, and a locking sleeve is screwed to the portion where the rotating rod passes through the negative pressure air hood, and an operating handle is provided on the locking sleeve.

[0012] Exemplarily, a side of the screen boat body away from the feed pipe has a second interlayer, a plurality of material dropping guide plates are arranged in the second interlayer, and a second material dropping channel corresponding to the second discharge port is formed between the top ends of adjacent material dropping guide plates.

[0013] For example, the lower ends of the intermediate blanking guide plates are rotatably connected to the second interlayer, and the rotating shafts of the blanking guide plates pass through the second interlayer and are provided with adjustment handles.

[0014] The beneficial effect of the screen boat provided by the present invention is that, compared with the prior art, the screen boat of the present invention utilizes a vibration motor to excite the screen boat body connected to the flexible base to vibrate, so that the mixture of corn residue and corn embryos that falls to the lower end of the screen crawls to the higher end. During the crawling process, due to the double effects of the blowing and vibration of the negative pressure airflow passing through the screen from bottom to top, the light corn embryos can float on the upper layer of the corn residue, and most of the corn residue below the corn embryos can be discharged by utilizing the first discharge port opened on the first cavity wall inclined in the first direction, and at the same time, the corn embryos can be moved in the upper layer by utilizing the barrier of the first cavity wall in combination with the airflow and vibration. While moving along the first direction, it also moves toward the second cavity wall, and is finally discharged from the second discharge port. Since the remaining small portion of corn residue and corn germs move different distances along the first direction under the action of airflow and vibration, the second discharge port farther from the feed pipe discharges the remaining corn residue, and the second discharge port closer to the feed pipe discharges the corn germs, thereby ensuring the quality of germ selection. Since the first discharge port opened on the inclined first cavity wall can distribute most of the corn residue discharge, the germ selection efficiency can be greatly improved when the screen area remains unchanged, thereby effectively improving the single unit production capacity of the corn germ selection machine.

[0015] In a second aspect, the present invention further provides a corn embryo selection machine, comprising the above-mentioned screening boat.

[0016] The beneficial effect of the corn embryo selection machine provided by the present invention is that, compared with the prior art, the corn embryo selection machine of the present invention adopts the above-mentioned screening ship, which can improve the production capacity of the corn embryo selection machine on the basis of ensuring the quality of corn embryo selection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the overall structure of a corn embryo selection machine provided by an embodiment of the present invention; Figure 2 A schematic diagram of the three-dimensional structure of a screening ship (negative pressure wind hood partially cut away) provided in an embodiment of the present invention; Figure 3 for Figure 2 A schematic diagram of the local enlarged structure at point A in the middle; Figure 4 This is a schematic diagram of the three-dimensional structure of the screen ship body used in an embodiment of the present invention.

[0018] In the figure: 10, screen ship body; 101, first discharge port; 102, second discharge port; 103, first interlayer; 104, second interlayer; 11, first cavity wall; 12, second cavity wall; 13, third cavity wall; 131, return plate; 132, adjusting screw rod; 14, stone blocking box; 141, stone discharge port; 15, guide plate; 151, partition; 152, first blanking channel; 16, adjusting plate; 161, rotating rod; 162, locking sleeve; 163, operating handle; 17, blanking guide plate; 171, second blanking channel; 172, adjusting handle; 20, negative pressure wind hood; 30, flexible base; 40, vibration motor; 50, screen; 60, feed pipe. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on another element or indirectly on another element. It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" and "several" is two or more, unless otherwise clearly and specifically defined.

[0021] Please also read Figures 1 to 4, the sieve boat provided by the present invention is now described. The sieve boat comprises a sieve boat body 10 and a negative pressure wind hood 20, the sieve boat body 10 is used to be fixedly connected to the flexible base 30, and a vibration motor 40 is provided on the sieve boat body 10; a sieve 50 gradually rising along the first direction is provided at the bottom of the sieve boat body 10, a sealing cover of the negative pressure wind hood 20 is arranged above the sieve boat body 10 and forms a sieving cavity between the sieve 50, and a feed pipe 60 connected to the sieving cavity is provided on the top of one side of the negative pressure wind hood 20; the sieving cavity has a first cavity wall 11 and a second cavity wall 12 forming an angle, the second cavity wall 12 is away from the feed pipe 60 and parallel to the first direction, and the spacing between the first cavity wall 11 and the second cavity wall 12 gradually decreases along the first direction; wherein, a plurality of first discharge ports 101 are spaced apart on the first cavity wall 11, and a plurality of second discharge ports 102 distributed adjacent to each other are formed between the edge of one side of the sieve 50 close to the second cavity wall 12 and the second cavity wall 12.

[0022] It should be noted that the negative pressure hood 20 in this embodiment refers to a component that is connected to a negative pressure power device to form a negative pressure environment in its inner cavity, and at the same time, the mesh of the screen 50 is used to form an air inlet, thereby forming an airflow that circulates from bottom to top in the screening cavity, thereby blowing the mixture of corn germs and corn residues on the screen 50; the vibration motor 40 is directly connected to the screen ship body 10 as a vibration source, and the screen ship body 10 is connected to the flexible base 30, thereby being able to vibrate under vibration excitation, thereby forming a screening action. Specifically, corn residue is heavier than corn germs, so under the drive of the negative pressure airflow, the up and down vibration amplitude of the corn residue relative to the corn germ is small and the vibration frequency is high, so the corn residue climbs fast along the first direction on the screen 50, thereby achieving the separation of corn residue and corn germs.

[0023] During the screening process, the corn germs gradually occupy a high position, that is, the corn germs gradually float above the corn residue. At this time, the corn residue located below will enter the first discharge port 101 opened on the first cavity wall 11 inclined to the first direction during the movement along the first direction. Specifically, the first discharge port 101 is a slit structure opened upward from the surface of the screen 50, thereby preventing the corn germs floating on the top from leaking from the first discharge port 101; in this way, most of the corn residue in the mixture will be discharged through the first discharge port 101 during the flow along the first cavity wall 11, while the corn germs and the remaining small part of the corn residue gradually move to the second cavity wall 12, and form a staggered distribution state according to the different particle sizes and weights of the corn germs, thereby utilizing each second discharge port 102 to discharge corn germs of different particles, thereby realizing the sorting of corn germs. That is to say, the corn residue in the mixture falling into the screening chamber can be quickly separated and discharged through the first discharge port 101, and in this process, most of the corn residue only occupies a small strip of the screen 50 along the first chamber wall 11, thereby enabling the screening chamber to have a larger feed flow rate without changing the area of ​​the screen 50, thereby improving the production capacity of the corn embryo selection machine. It has been verified in practice that the conventional corn embryo selection machine with a production capacity of two tons can be increased to three tons after the above improvement, and the effect is obvious.

[0024] Compared with the prior art, the screen boat provided in this embodiment uses a vibration motor 40 to excite the screen boat body 10 connected to the flexible base 30 to vibrate, so that the mixture of corn residue and corn embryos falling to the lower end of the screen 50 crawls to the higher end. During the crawling process, the light corn embryos can float on the upper layer of the corn residue due to the double effects of the blowing and vibration of the negative pressure airflow passing through the screen 50 from bottom to top, and most of the corn residues located below the corn embryos are discharged by using the first discharge port 101 opened on the first cavity wall 11 inclined in the first direction. At the same time, the corn embryos are moved in the first direction by using the barrier of the first cavity wall 11 in combination with the airflow and vibration. At the same time, it also moves toward the second cavity wall 12, and is finally discharged from the second discharge port 102. Since the remaining small portion of corn residue and corn embryos move different distances along the first direction under the action of airflow and vibration, the second discharge port 102 farther from the feed pipe 60 finally discharges the remaining corn residue, and the second discharge port 102 closer to the feed pipe 60 discharges the corn embryos, thereby ensuring the quality of embryo selection. Since the first discharge port 101 opened on the inclined first cavity wall 11 can distribute most of the corn residue discharge, the embryo selection efficiency can be greatly improved when the area of ​​the screen 50 remains unchanged, thereby effectively improving the single unit production capacity of the corn embryo selection machine.

[0025] In some embodiments, see Figures 2 to 4The screening chamber has a third chamber wall 13, which is far away from the feed pipe 60 and connected to the first chamber wall 11 and the second chamber wall 12 at both ends; wherein, a return plate 131 is provided on the third chamber wall 13, and the return plate 131 is spaced apart from the screen 50 up and down and is used to block materials blown up by the wind.

[0026] When the material crawls on the screen 50, a small part of corn residue and corn germs reach the third cavity wall 13 without being discharged in time. In order to avoid siltation here, a return plate 131 is provided. The return plate 131 is used to block the top of the screen 50 so that the material in contact with the third cavity wall 13 is returned to the middle of the screen 50 under the influence of airflow, and then a second screening is carried out in the middle area of ​​the screen 50, and finally all of the material is discharged, thereby avoiding siltation in the screening cavity and affecting the efficiency and quality of germ selection.

[0027] For some possible implementations, see Figure 3 and Figure 4 A stone-blocking box 14 is provided at the position where the second cavity wall 12 and the third cavity wall 13 meet. The side wall of the stone-blocking box 14 is sealed against the return plate 131, and a stone-discharging port 141 is provided on the side wall of the stone-blocking box 14 facing the screening cavity. Since corn grains are inevitably mixed with stone particles, the stone particles cannot be crushed and mixed with corn residue and corn germs to enter the screening cavity. Here, the stone particles can be blocked by setting the height of the first discharge port 101, so that the stone particles follow the first cavity wall 11 and reach the third cavity wall 13. Since the stone particles are heavy and cannot be blown up by the airflow, they will be discharged from the stone-discharging port 141 provided on the side wall of the stone-blocking box 14 during the vibration process, while the lighter corn germs and corn residues will return to the middle area of ​​the screen 50 under the blowing of the airflow and the blocking effect of the return plate 131, thereby achieving stone removal in the corn germ selection process, which helps to improve the quality of corn germs.

[0028] Specifically, see Figure 3 In this embodiment, the return plate 131 is hinged to the third cavity wall 13, and the return plate 131 is connected with an adjusting screw 132, which passes through the negative pressure hood 20 and is screwed to the negative pressure hood 20. By rotating the adjusting screw 132, the return plate 131 can be driven to swing up and down, so as to achieve the angle adjustment of the return plate 131, thereby adjusting the air intake volume of the corresponding screen 50 area under the return plate 131, so as to adjust the return flow efficiency and stone removal effect for mixtures of different qualities.

[0029] In some embodiments, the screen vessel body 10 is Figure 4The structure shown. A guide plate 15 is provided on the screen boat body 10, and the guide plate 15 is bent upward at the edge of the screen 50 to form a first cavity wall 11. A first interlayer 103 is formed between the inner wall of one side of the negative pressure wind hood 20 and the guide plate 15. A plurality of partitions 151 are spaced apart in the first interlayer 103, and a first material drop channel 152 corresponding to each first discharge port 101 is formed between adjacent partitions 151. By setting the guide plate 15, the material, especially corn residue, can be guided in the climbing direction, and the corn residue can be made to fall into different first material drop channels 152 according to different climbing distances, which is conducive to the segmented discharge of corn residue at different positions and the grading of corn residue.

[0030] It should be noted that see Figure 3 and Figure 4 Each first discharge channel 152 is provided with an adjustment plate 16, which blocks at least part of the first discharge port 101 and is used to slide up and down to adjust the opening of the first discharge port 101. By sliding the adjustment plate 16 up and down, the blocking area of ​​the first discharge port 101 can be adjusted, so as to realize the switch and opening adjustment of the first discharge port 101. On the one hand, the switch state of each first discharge port 101 can be adjusted in sequence along the first direction, so as to adjust the distance of corn residue from entering the screening chamber to being discharged through the first discharge port 101, so as to avoid the loss of corn residue due to the mixing of corn residue and corn germ into the first discharge port 101 without effective separation. On the other hand, the discharge efficiency can be adjusted by adjusting the opening of the first discharge port 101, so as to avoid the discharge of corn germ through the first discharge port 101 due to the excessive opening of the first discharge port 101, and avoid the situation that the corn residue cannot be discharged due to the excessive opening of the first discharge port 101.

[0031] In order to facilitate the adjustment of the opening of each first discharge port 101, please refer to Figures 2 to 4 The adjusting plate 16 is rotatably connected with a rotating rod 161, which passes through the negative pressure hood 20 upward and is screwed with the negative pressure hood 20, and a locking sleeve 162 is screwed with the portion where the rotating rod 161 passes through the negative pressure hood 20, and an operating handle 163 is provided on the locking sleeve 162. The locking sleeve 162 can be unlocked by rotating the operating handle 163, and then the rotating rod 161 can be rotated to drive the adjusting plate 16 to move up and down. After adjusting to the right position, the locking sleeve 162 can be rotated again to lock the rotating rod 161. The operation is simple and convenient, and the adjusting plate 16 can be prevented from loosening or floating up and down under the vibration of the screening ship, thereby ensuring the screening quality.

[0032] For some possible implementations, see Figure 2 and Figure 3The screen boat body 10 has a second interlayer 104 on one side away from the feed pipe 60, and a plurality of material dropping guide plates 17 are arranged in the second interlayer 104, and a second material dropping channel 171 corresponding to the second discharge port 102 is formed between the tops of adjacent material dropping guide plates 17. Since the particle size and weight of corn germs and corn residues affect the distance they move on the screen 50, the plurality of second material dropping channels 171 are provided to realize the discharge of corn germs in different regions, thereby realizing the separation and discharge of corn germs of different sizes, and improving the layering of the selected germs.

[0033] It should be noted that, in this embodiment, see Figure 4 The lower ends of the intermediate blanking guide plates 17 are rotatably connected to the second interlayer 104, and the rotating shaft of the blanking guide plates 17 passes through the second interlayer 104 and is provided with an adjustment handle 172. By operating the adjustment handle 172, the corresponding blanking guide plates 17 can be driven to swing, thereby adjusting the size of each second discharge port 102, thereby achieving accurate sorting for materials of different qualities and improving the sorting quality.

[0034] Based on the same inventive concept, combined Figures 1 to 4 It is understood that the embodiment of the present application also provides a corn embryo selection machine, including the above-mentioned screening boat.

[0035] Compared with the prior art, the corn embryo selection machine provided in this embodiment adopts the above-mentioned screen ship. Since the first discharge port 101 opened on the inclined first cavity wall 11 can distribute most of the corn residue discharge, the embryo selection efficiency can be greatly improved while the area of ​​the screen 50 remains unchanged, thereby effectively improving the single unit production capacity of the corn embryo selection machine.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A screening ship, characterized in that: It includes a screen boat body and a negative pressure wind hood, the screen boat body is used to be fixedly connected to a flexible base, and the screen boat body is provided with a vibration motor; the bottom of the screen boat body is provided with a screen which gradually rises along a first direction, the negative pressure wind hood sealing cover is arranged above the screen boat body and forms a screening chamber with the screen, and a feed pipe connected to the screening chamber is arranged on the top of one side of the negative pressure wind hood; the screening chamber has a first cavity wall and a second cavity wall forming an angle, the second cavity wall is away from the feed pipe and parallel to the first direction, and the distance between the first cavity wall and the second cavity wall gradually decreases along the first direction; wherein, a plurality of first discharge ports are spaced apart on the first cavity wall, and a plurality of second discharge ports distributed adjacent to each other in sequence are formed between the edge of one side of the sieve close to the second cavity wall and the second cavity wall.

2. The screening ship according to claim 1, characterized in that: The screening chamber has a third chamber wall, which is far away from the feed pipe and has two ends connected to the first chamber wall and the second chamber wall respectively; wherein a return plate is provided on the third chamber wall, and the return plate is spaced above and below the screen and is used to block materials blown up by the wind.

3. The screening ship according to claim 2, characterized in that: A stone blocking box is provided at the position where the second cavity wall and the third cavity wall meet, the side wall of the stone blocking box is in sealing contact with the material return plate, and the stone blocking box is provided with a stone discharge opening facing the side wall of the screening cavity.

4. The screening ship according to claim 2, characterized in that: The return plate is hinged to the third cavity wall, and an adjusting screw rod is connected to the return plate. The adjusting screw rod passes through the negative pressure air hood and is screwed to the negative pressure air hood.

5. The screening ship according to claim 1, characterized in that: A guide plate is provided on the screen boat body, and the guide plate is bent upward at the edge of the screen to form the first cavity wall. A first interlayer is formed between the inner wall of one side of the negative pressure wind hood and the guide plate. A plurality of partitions are spaced apart in the first interlayer, and first material discharge channels corresponding to each of the first discharge ports are formed between adjacent partitions.

6. The screening ship according to claim 5, characterized in that: Each of the first material discharge channels is provided with an adjustment plate, and the adjustment plate blocks at least a portion of the first material discharge port and is used to slide up and down to adjust the opening of the first material discharge port.

7. The screening ship according to claim 6, characterized in that: The adjusting plate is rotatably connected with a rotating rod, which passes through the negative pressure wind hood upward and is screwed with the negative pressure wind hood, and a locking sleeve is screwed with the portion where the rotating rod passes through the negative pressure wind hood, and an operating handle is provided on the locking sleeve.

8. The screening ship according to claim 1, characterized in that: The screen boat body has a second interlayer on one side away from the feed pipe, a plurality of material dropping guide plates are arranged in the second interlayer, and a second material dropping channel corresponding to the second discharge port is formed between the top ends of adjacent material dropping guide plates.

9. The screening ship according to claim 8, characterized in that: The lower end of each of the blanking guide plates in the middle is rotatably connected to the second interlayer, and the rotating shaft of the blanking guide plate passes through the second interlayer and is provided with an adjustment handle.

10. Corn embryo selection machine, characterized in that: Comprising the screening ship as described in any one of claims 1-9.

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