CN110813691B

CN110813691B - Equal-size sorting method for walnut for cultural playing

Info

Publication number: CN110813691B
Application number: CN201911189386.4A
Authority: CN
Inventors: 万莹仙
Original assignee: Hubei University of Science and Technology
Current assignee: Hubei University of Science and Technology
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-11-03
Anticipated expiration: 2039-11-28
Also published as: CN110813691A

Abstract

The invention provides an equal-size sorting method for walnuts played with characters, and belongs to the technical field of machinery. The method is realized through a filtering mechanism, the filtering mechanism comprises a rack and a plurality of conveying belts, and the conveying belts are superposed from top to bottom in a specific mode that: the turn-back radius of each conveyer belt is reduced from outside to inside in sequence, and the conveyer belt with smaller turn-back radius is wrapped by the conveyer belt with larger turn-back radius; the conveyer belt is provided with a plurality of leak holes, and the pore diameter of the leak holes on each conveyer belt is reduced from outside to inside; firstly, driving each conveying belt to move towards a direction far away from the driving roller for a period of time; then, stopping feeding, wherein except for the outermost layer of the conveyer belt, the conveyer belts in all layers sequentially run in the reverse direction from inside to outside, and when one conveyer belt runs in the reverse direction, the other conveyer belts keep the initial running direction; and (4) sequentially reversely running the conveying belts on the inner sides of the conveying belts reversely running for the last time from outside to inside, and repeating the steps to finish the sorting process of the walnuts according to the sizes. The invention has the advantages of accurate filtration and the like.

Description

Equal-size sorting method for walnut for cultural playing

Technical Field

The invention belongs to the technical field of machinery, and relates to an equal-size sorting method for playing walnuts.

Background

The walnut toy has good walnut playing value, the similarity of the walnut toy sold in pairs is very important, in addition, the walnut toy is good and not good, the walnut toy has bone, good bone quality and enough oiliness, the cortex density of the walnut toy is not wrong, the walnut toy can be looked better, the walnut toy has the walnut playing value, the walnut toy is very light, the walnut toy does not play hands, the walnut toy does not have mature characters, the walnut has insufficient oiliness, the density is not large, and the plate value is not high.

In the paired walnut sorting process, after the walnuts are sorted, walnuts with similar densities are selected from walnuts with equivalent sizes, manufacturers and purchasing manufacturers of the funny walnuts need to classify the walnuts well, and then the walnuts with equivalent sizes and densities are priced so as to be convenient for sale.

The existing mode is manual operation, which not only easily causes different judgment standards for sorting, but also easily causes the problems of incomplete processing or excessive processing in the process of processing the sorted walnuts, particularly in the process of mechanical grinding and polishing, and moreover, the manual sorting cost is high, the difficulty is high, and the sorting and pricing are not easy.

Disclosure of Invention

The invention aims to provide an equal-size sorting method of walnuts for playing with a game aiming at the problems in the prior art, and the technical problem to be solved by the invention is how to simply and conveniently realize sorting of walnuts with different sizes.

The purpose of the invention can be realized by the following technical scheme: the equal-size sorting method for the walnuts played with the characters is characterized by being realized through a filtering mechanism, wherein the filtering mechanism comprises a rack and a plurality of conveying belts, the conveying belts are superposed from top to bottom, and the specific mode is as follows: the turn-back radius of each conveyer belt is reduced from outside to inside in sequence, and the conveyer belt with smaller turn-back radius is wrapped by the conveyer belt with larger turn-back radius;

one end of each conveying belt is respectively pulled by a driving roller, the other end of the conveying belt positioned at the innermost side is pulled by a driven roller, gaps between the adjacent conveying belts at one end of the driven roller are supported by a plurality of supporting blocks fixed on a support, and the outer side and the inner side of each supporting block are respectively and rotatably connected with a roller;

the conveying belts are provided with a plurality of leakage holes, and the diameters of the leakage holes on the conveying belts are sequentially reduced from outside to inside;

each conveying belt is correspondingly provided with a blanking plate fixed on the frame, the blanking plate of the innermost conveying belt is positioned between the driving roller and the driven roller, and the blanking plates of the conveying belts of other layers are positioned between the driving roller of the conveying belt and the driving roller of the conveying belt at the inner side; the tail end of the outermost conveying belt is also provided with a blanking plate, so that the blanking plates are positioned in the same plane and are sequentially distributed at intervals according to the filtering diameter from large to small;

both sides of each conveying belt are provided with a baffle fixed on the frame; except the blanking plate corresponding to the innermost conveying belt, a blocking plate is arranged above each blanking plate, the blocking plate is fixed on the frame, and the blocking plate is close to the lower surface of the conveying belt above the blocking plate; a plurality of stirring rods are connected between the two baffles on the two sides of the same conveying belt;

the sorting method comprises the following steps:

the first step is as follows: the walnut with the thoroughly cleaned beancurd sheets is slowly put in from the outermost layer of the conveyer belt, and is put in from one end of the outermost layer close to the driving roller, each conveyer belt runs for a period of time towards the direction far away from the driving roller, so that the outermost layer of the conveyer belt drives the walnut which cannot be filtered through the filtering holes in the conveyer belt to enter the lower material plate at the tail end of the outermost layer of the conveyer belt, the walnut which cannot be filtered through the filtering holes in the outermost layer of the conveyer belt enters the inner layer of the conveyer belt, and the walnut which cannot be filtered through the corresponding conveyer belt or cannot be filtered through the corresponding conveyer belt due to stacking is positioned on one side of the conveyer belt far away;

the second step is that: stopping feeding, wherein except the outermost layer of the conveyer belt, the conveyer belts in all layers run in reverse in sequence from inside to outside, and when one conveyer belt runs in reverse, the other conveyer belts keep the initial running direction;

the third step: after the second step, the conveying belts on the inner sides of the conveying belts which reversely run for the last time sequentially reversely run from outside to inside, and when one conveying belt reversely runs, other conveying belts keep the initial running direction; according to the control rule of the third step, the reverse running times of the inner layer conveyor belt in any two adjacent conveyor belts are increased by one time compared with the reverse running times of the outer layer conveyor belt adjacent to the inner layer conveyor belt;

the fourth step: and repeating the first step to the third step to finish the sorting process of the walnuts according to the sizes.

The above steps describe the process based on the situation that the number of layers of the conveyer belt is large, taking three layers as an example: first, blanking is carried out to the outermost layer, each conveying belt runs for a period of time in the direction far away from the driving roller, the running direction is called as forward running, otherwise, the reverse running is carried out, when the stacking condition exists on each conveying belt, blanking is suspended, the third layer runs for a period of time in the reverse direction, in the process, the outermost layer and the middle layer run in the forward direction, after the walnuts on the third layer are all separated from the conveying belts, the second layer runs for a period of time in the reverse direction, the first layer and the third layer run in the forward direction, after the stacked walnuts do not exist on the second layer, the innermost layer runs in the reverse direction, and similarly, other layers run in the forward direction.

Although the steps are relatively complicated, precise sorting can be realized by matching with the initial feeding amount through program control, and the specific sorting principle is as follows:

in the process that all the conveying belts run in the forward direction, walnuts which cannot be filtered through the corresponding filter holes are stacked between adjacent conveying belts far away from one side of the driving roller under the action of the supporting blocks and the baffle plates, the walnuts which cannot be filtered through the filter holes enter the corresponding blanking plates because the outermost conveying belt is long, the walnuts which cannot be filtered through the filter holes enter the corresponding blanking plates, when the innermost layer runs in the reverse direction, the stirring rods drive the stacked walnuts to be dispersed so as to be tiled again, the walnuts which can pass through the filter holes enter the corresponding blanking plates of the inner layer conveying belt, the walnuts which cannot be filtered through the filter holes enter the corresponding blanking plates of the upper layer conveying belt, the secondary inner layer runs in the reverse direction, the walnuts which are filtered through the secondary inner layer conveying belt enter the innermost layer conveying belt again, and the innermost layer conveying belt needs to be selected in the reverse direction again, therefore, the third step, and (5) feeding again, repeating the steps, and accurately sorting all walnuts.

The whole structure is very simple, the size is small, each conveying belt is stacked, and each blanking plate is positioned in the conveying belt.

The conveyer belt can be the level, also can make one side of drive roller decline certain angle, and the setting of supporting shoe can ensure that the walnut can not the centre gripping be close to between the adjacent conveyer belt of driven roller one end.

After the contracts of different diameters are sorted, the contracts enter the corresponding ejection mechanisms from respective blanking plates, the ejection mechanisms can be of the existing structures, for example, the barrel with the opening facing to the upper front is internally and slidably connected with a sliding plate, the sliding plate is connected with the bottom of the barrel through a spring, the walnut falls into the ejection mechanisms and then can be compressed, and the walnut is ejected out of the barrel under the action of the restoring force of the spring.

Further, the conveyer belt is made of transparent soft plastics.

The conveyer belt of transparent material can the operating personnel respectively observe the state of walnut on the conveyer belt to in good time adjustment conveyer belt's operating parameter.

In the equal-size sorting method for the walnuts played with the literary composition, the outer side surface of the conveying belt is provided with a plurality of limiting strips, and the limiting strips are arranged along the running direction of the conveying belt.

Spacing can make the walnut remove according to the orbit in the in-process that rolls in-process and be driven in reverse, improves and filters out efficiency, reduces the filtration pore because of the jam that a plurality of walnuts share the filtration pore cross-section and cause.

In the equal-size sorting method for the walnuts played with the culture medium, one end of the blanking plate is inclined to one side perpendicular to the running direction of the conveying belt, so that an inclination angle smaller than 20 degrees is formed between the plane where the blanking plate is located and the plane where the conveying belt is located.

Drawings

Fig. 1 is a schematic view of the overall structure of the screening apparatus.

Figure 2 is a schematic view of the construction of the ejection mechanism.

Fig. 3 is a schematic view of the size selecting mechanism.

Fig. 4 is a schematic structural view of the first bonding pad and the second bonding pad.

In the figure, 11, a frame; 12. a conveyor belt; 121. a limiting strip; 122. a leak hole; 13. a drive roller; 14. a driven roller; 15. a support block; 16. a roller; 17. a blanking plate; 18. a baffle plate; 181. a stirring rod; 19. a blocking plate; 21. a projectile barrel; 211. a feeding port; 212. an annular step; 213. a sheath; 22. a drive motor; 23. an armature post; 231. a jack; 232. a guide bar; 233. a protrusion; 234. a thread groove; 24. a striking head; 241. a permanent magnet strip; 25. an electrified coil; 26. a return spring; 27. a first combination disc; 271. a contact; 28. a second combination disc; 281. a contact bar; 3. feeding into a hopper; 4. and (4) adjusting the sleeve.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 3, the sorting device comprises a frame 11, a filtering mechanism arranged on the frame 11, the filtering mechanism comprises a plurality of conveyer belts 12, each conveyer belt 12 is superposed from top to bottom, and the sorting device is characterized in that: the turning-back radius of each conveyor belt 12 is reduced from outside to inside in sequence, and the conveyor belt 12 with smaller turning-back radius is wrapped by the conveyor belt 12 with larger turning-back radius;

one end of each conveying belt 12 is respectively drawn by a driving roller 13, the other end of the conveying belt 12 positioned at the innermost side is drawn by a driven roller 14, gaps between the adjacent conveying belts 12 at one end of the driven roller 14 are supported by a plurality of supporting blocks 15 fixed on a bracket, and the outer side and the inner side of each supporting block 15 are respectively and rotatably connected with a roller 16;

the conveyer belt 12 is provided with a plurality of leak holes 122, and the diameters of the leak holes 122 on the conveyer belt 12 are sequentially reduced from outside to inside;

each conveying belt 12 is correspondingly provided with a blanking plate 17 fixed on the frame 11, the blanking plate 17 of the innermost conveying belt 12 is positioned between the driving roller and the driven roller 14, and the blanking plates 17 of the other layers of conveying belts 12 are positioned between the driving roller 13 of the conveying belt 12 and the driving roller 13 of the inner conveying belt 12; the tail end of the outermost conveying belt 12 is also provided with a blanking plate 17, so that the blanking plates 17 are positioned in the same plane and are distributed at intervals in sequence from large to small according to the filtering diameter;

the two sides of each conveying belt 12 are provided with a baffle 18 fixed on the frame 11; except the blanking plate 17 corresponding to the conveying belt 12 positioned at the innermost side, a blocking plate 19 is arranged above each blanking plate 17, the blocking plate 19 is fixed on the frame 11, and the blocking plate 19 is close to the lower surface of the conveying belt 12 above the blocking plate 19; a plurality of stirring rods 181 are connected between the two baffles 18 on the two sides of the same conveying belt 12;

the frame 11 is provided with ejection mechanisms corresponding to the blanking plates 17 one by one.

The steps for sorting walnuts with different sizes are as follows:

the first step is as follows: walnuts with clean bean curd skins are slowly put in from the outermost layer of the conveying belt 12, and are put in from one end of the outermost layer close to the driving roller 13, each conveying belt 12 runs for a period of time towards the direction far away from the driving roller 13, so that the outermost layer of the conveying belt 12 drives walnuts which cannot be filtered through the filtering holes in the conveying belt 12 to enter the blanking plate 17 at the tail end of the outermost layer of the conveying belt 12, the walnuts which can not be filtered through the filtering holes in the outermost layer of the conveying belt 12 can enter the inner layer of the conveying belt 12, and the walnuts which cannot be filtered through the corresponding conveying belt 12 or cannot be filtered through the corresponding conveying belt 12 due to stacking are positioned on one side, far away from the;

the second step is that: stopping feeding, namely, sequentially reversely running each layer of the conveyer belts 12 except the outermost layer of the conveyer belt 12 from inside to outside, and keeping the initial running direction of other conveyer belts 12 when one conveyer belt 12 reversely runs;

the third step: after the second step, the conveying belts 12 on the inner side of the conveying belt 12 which runs reversely for the last time sequentially run reversely from outside to inside, and when one conveying belt 12 runs reversely, other conveying belts 12 keep the initial running direction; according to the control rule of the third step, the reverse running times of the inner layer conveying belt 12 in any two adjacent conveying belts 12 are increased by one time compared with the reverse running times of the outer layer conveying belt 12 adjacent to the inner layer conveying belt;

The above steps describe the process based on the situation that the number of layers of the conveyer belt 12 is large, taking three layers as an example: first, blanking is carried out to the outermost layer, each conveying belt 12 runs for a period of time in the direction far away from the driving roller 13, the running direction is called as forward running, otherwise, the reverse running is carried out, when stacking conditions exist on each conveying belt 12, blanking is suspended, the third layer runs for a period of time in the reverse direction, in the process, the outermost layer and the middle layer run in the forward direction, after walnuts on the third layer are all separated from the conveying belts 12, the second layer runs for a period of time in the reverse direction, the first layer and the third layer run in the forward direction, after no stacked walnuts exist on the second layer, the innermost layer runs in the reverse direction, and similarly, other layers run in the forward direction.

in the process that all the conveying belts 12 are operated in the forward direction, walnuts which cannot be filtered through corresponding filter holes are stacked between the adjacent conveying belts 12 far away from one side of the driving roller 13 under the action of the supporting blocks 15 and the baffle plates 18, the walnuts which cannot be filtered through the filter holes enter the corresponding blanking plates 17 due to the longer length of the outermost conveying belt 12, when the innermost layer is operated in the reverse direction, the stirring rods 181 drive the stacked walnuts to be dispersed, so that the walnuts are tiled again, the walnuts which can pass through the filter holes enter the corresponding blanking plates 17 of the inner conveying belt 12, the walnuts which cannot be filtered enter the corresponding blanking plates 17 of the upper conveying belt 12, the secondary inner layer is operated in the reverse direction, the walnuts which are filtered through the secondary inner conveying belt 12 enter the innermost conveying belt 12 again, and the innermost conveying belt 12 needs to be selected in the reverse direction again, therefore, the third step of the above steps, and (3) feeding again until no walnuts exist on all the conveying belts 12, and repeating the steps to accurately select all the walnuts.

The whole structure is very simple and small in size, and the conveyer belts 12 are stacked with the blanking plates 17 inside.

The conveyer belt 12 can be horizontal, also can make one side of drive roller 13 decline certain angle, and the setting of supporting shoe 15 can ensure that the walnut can not be inserted between the adjacent conveyer belt 12 of being close to driven roller 14 one end.

After the contracts of different diameters are sorted and classified, the contracts enter the corresponding ejection mechanisms from the respective blanking plates 17, the ejection mechanisms can be of the existing structures, for example, the barrel with the opening facing upwards and forwards is connected with a sliding plate in the barrel, the sliding plate is connected with a spring at the bottom of the barrel, the spring can be compressed after the walnut falls in, and the walnut is ejected out of the barrel under the action of the restoring force of the spring.

Further, the conveyor belt 12 is made of transparent soft plastic.

The conveyer belt 12 of transparent material can the operation personnel respectively observe the state of walnut on conveyer belt 12 to in good time adjustment conveyer belt 12's operating parameter.

The lateral surface of the conveying belt 12 is provided with a plurality of limiting strips 121, and the limiting strips 121 are arranged along the running direction of the conveying belt 12. Spacing strip 121 can make the walnut remove according to the orbit in the in-process that rolls and is driven in reverse, improves and filters out efficiency, reduces the filtration pore because of the jam that a plurality of walnuts share the filtration pore cross-section and cause.

One end of the blanking plate 17 inclines to one side vertical to the running direction of the conveying belt 12, so that an inclination angle of less than 20 degrees is formed between the plane of the blanking plate 17 and the plane of the conveying belt 12.

As shown in fig. 2 and 4, the ejection mechanism comprises a ejection barrel 21, a driving motor 22, a power supply, an armature column 23 and an impact head 24, the driving motor 22 is fixedly arranged at the rear end of the ejection barrel 21, an energizing coil 25 is wound on the armature column 23, the armature column 23 is fixed in the ejection barrel 21, the impact head 24 is slidably connected at the front end of the ejection barrel 21, the front end of the ejection barrel 21 is open, the impact head 24 is connected with the armature column 23 through a return spring 26, an output shaft of the driving motor 22 is rotatably connected in the armature column 23, a first bonding disk 27 is fixedly arranged on the output shaft of the driving motor 22, a second bonding disk 28 parallel to the first bonding disk 27 is fixedly arranged at the rear end of the armature column 23, a permanent magnet strip 241 with the magnetic pole direction coincident with the axis of the ejection barrel 21 is arranged in the impact head 24, two arc-shaped contact strips 281 are arranged on the second bonding disk 28, the two contact strips 281 are uniformly distributed on the second bonding disk 28 in the circumferential direction, the two ends of the energizing coil 25 are respectively and electrically connected with the two contact strips 281, the radiuses of the two contact strips 281 are the same, the combination disc I27 is provided with two contacts 271 which are symmetrically distributed, the two contacts 271 can respectively abut against the two contact strips 281, the two contacts 271 are respectively connected with the positive pole and the negative pole of the power supply, and the driving motor 22 is electrically connected with the power supply; the throwing barrel 21 is provided with a feeding port 211, and the striking head 24 can block the feeding port 211 when moving to a limit position close to one end of the opening of the throwing barrel 21.

The driving motor 22 is a micro motor, only the first combination disk 27 needs to be driven, the driving force and noise are relatively small, the driving motor 22 is used for driving the first combination disk 27 and the second combination disk 28 to move relatively, in the process of the relative movement of the first combination disk 27 and the second combination disk 28, the energizing direction of the energized coil 25 is intermittently adjusted due to the switching of the contact spring and the contact 271, when one end of the armature column 23, which is close to the impact head 24, is opposite to one end of the permanent magnet strip 241 in the impact head 24, the impact head 24 receives the adsorption force in the direction of the armature column 23 and compresses the return spring 26, so that the impact head 24 vacates the blanking section of the feeding port 211 and enters the throwing cylinder 21, when the current direction of the energized coil 25 is switched, one end of the armature column 23, which is close to the impact head 24, is the same pole as one end of the permanent magnet strip 241 in the impact head 24, the impact head 24 receives the repulsion force given by the armature column 23 and adds the restoring force of the, the impacting head 24 moves towards the opening direction of the throwing cylinder 21 to drive the walnuts in the throwing cylinder 21 to be thrown out of the throwing cylinder 21.

The rotating speed of the driving motor 22 is controlled, so that the time for the impacting head 24 to vacate the blanking section of the feeding port 211 is proper, only one walnut entering the throwing cylinder 21 at a time can enter the walnut or not enter the walnut, in principle, the walnut cannot enter the walnut normally at a certain probability, and a plurality of walnuts entering at a time cannot enter the walnut at a time, so that the corresponding relation between the throwing distance and the quality of the walnuts is ensured in the throwing process.

The collision head 24 is pulled up and driven by switching the current direction of the electrified coil 25, in the pulling up process, the pulling force on the collision head 24 is changed from small to large, and under the action of the reset spring 26, the collision head 24 cannot be contacted with the armature post 23, so that the walnut is prevented from being impacted when the armature post 23 is contacted with the collision head 24, and when the collision head 24 slides to the opening direction of the throwing cylinder 21 instantly, a gap is formed between the walnut and the collision head 24, so that the throwing distance is influenced, and the sorting precision is influenced; in the process that the impact head 24 is far away from the armature post 23, the driving force applied to the impact head 24 is reduced from large to small, and the impact head 24 carries the walnut to throw out more strongly by matching with the characteristic that the pulling force is reduced from small to large when the impact head 24 is close to the armature post 23, and the walnut is less worn by the impact head 24.

The whole casting mechanism is very simple in structure, the control mode is also very simple, the whole size is small, a plurality of casting mechanisms work simultaneously, and the sorting efficiency is greatly improved.

The end of impact head 24 adjacent armature post 23 has an annular step 212 and the end of return spring 26 adjacent impact head 24 is attached to annular step 212. The annular step 212 is arranged, so that the minimum distance between the armature post 23 and the impact head 24 can be reduced while the longer deformation length of the return spring 26 is kept, and the driving force for throwing out the walnut cannot be weakened.

One end of the impact head 24 close to the opening of the throwing barrel 21 is provided with a sheath 213, the outline of the sheath 213 is matched with the inner cavity of the throwing barrel 21, and the sheath 213 is provided with a notch which can be aligned with the material inlet 211; an insertion hole 231 is formed in the armature post 23, a guide rod 232 inserted into the insertion hole 231 is fixedly arranged on the impact head 24, a protrusion 233 is arranged on the guide rod 232, a thread groove 234 is formed in the inner wall of the insertion hole 231, and in the process that the protrusion 233 moves from one end of the thread groove 234 to the other end, the rotation angle of the impact head 24 is 80-120 degrees.

In the process that the impact head 24 moves in the throwing cylinder 21, the opening section of the feed opening changes, if the impact head 24 only moves linearly, the walnut is clamped between the impact head 24 and the feed opening, in order to avoid the problem, the feeding precision is improved, the impact head 24 moves linearly and simultaneously carries out rotary motion at a certain angle through the matching of the thread groove 234 and the protrusion 233, so that when the impact head 24 opens and closes the feed opening, the walnut can be driven by the rotation of the impact head 24, the entering walnut can enter the sheath 213 more smoothly due to the rotation of the impact head 24, the walnut which is possibly stuck by the impact head 24 can be driven to leave the motion path of the impact head 24 due to the rotation of the impact head 24, on the one hand, the walnut is protected, and on the other hand, the feeding precision can be improved.

The existence of the sheath 213 can prevent dust and impurities from entering a gap between the impact head 24 and the ejection barrel 21, and can prevent the impact head 24 and the ejection barrel 21 from moving relatively to cause running resistance to the walnut in the sliding process of the impact head 24, so that the walnut is not abraded, and the contact part between the walnut and the impact head 24 is relatively stable in the ejection process.

The inlet 211 of each throwing barrel 21 is provided with an inlet hopper 3, and the opening of the inlet hopper 3 is positioned below the corresponding blanking plate 17.

The end, provided with the opening, of the throwing cylinder 21 faces upwards, and an inclination angle of 5-30 degrees is formed between the axis of the throwing cylinder 21 and the horizontal plane. The throwing cylinders 21 are distributed in an inclined angle, so that the walnuts can be ensured to be in contact with the end parts of the striking heads 24 in the process of returning the striking heads 24, when the striking heads 24 drive the walnuts to be thrown, the acting force on the walnuts is more direct, the actions of all throwing mechanisms are more uniform, and the sorting precision is improved.

The axes of the respective shooting pots 21 are in the same plane. In the selection process, variables are reduced as much as possible, the density of walnuts can be directly judged according to the casting distance, the casting cylinders 21 are positioned in the same plane, and the casting distance can be more directly related to the density of the walnuts.

An adjusting sleeve 4 is inserted into the sheath 213, and the adjusting sleeve 4 has a feeding opening corresponding to the gap. The specifications of all throwing mechanisms are uniform, however, after walnuts with different sizes enter, the contact positions of the walnuts with different sizes and the impacting head 24 are different, and the accurate: in order to eliminate the situation, aiming at the casting mechanisms corresponding to walnuts with different sizes, adjusting sleeves 4 with different thicknesses are rotated so as to adjust the contact positions of the walnuts and the impact head 24 to be positioned at the axial line position of the impact head 24.

A plurality of material receiving boxes are arranged in front of each throwing barrel 21, and the material receiving boxes corresponding to the same throwing barrel 21 are positioned on the same straight line. The walnut thrown by the receiving boxes at different positions is received to classify and package the walnut, and the bottom of the receiving box is provided with soft materials such as fine sand, so that the walnut is prevented from popping up after entering and is protected.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. The utility model provides an equidimension sorting method of walnut is played to literary composition, its characterized in that, this sorting method is realized through a straining selection mechanism, strain and select the mechanism to include frame (11) and a plurality of conveyer belt (12), each conveyer belt (12) superpose from top to bottom, and the concrete mode is: the turning-back radius of each conveyer belt (12) is reduced from outside to inside in sequence, and the conveyer belt (12) with smaller turning-back radius is wrapped by the conveyer belt (12) with larger turning-back radius;

one end of each conveying belt (12) is respectively pulled by a driving roller (13), the other end of the conveying belt (12) positioned at the innermost side is pulled by a driven roller (14), gaps between the adjacent conveying belts (12) at one end of the driven roller (14) are supported by a plurality of supporting blocks (15) fixed on a support, and the outer side and the inner side of each supporting block (15) are respectively and rotatably connected with a roller (16);

a plurality of leakage holes (122) are formed in the conveying belt (12), and the diameters of the leakage holes (122) in the conveying belt (12) are sequentially reduced from outside to inside;

each conveying belt (12) is correspondingly provided with a blanking plate (17) fixed on the rack (11), the blanking plate (17) of the conveying belt (12) at the innermost layer is positioned between a driving roller and a driven roller (14), and the blanking plates (17) of the conveying belts (12) at other layers are positioned between a driving roller (13) of the conveying belt (12) and a driving roller (13) of the conveying belt (12) at the inner side; the tail end of the outermost conveying belt (12) is also provided with a blanking plate (17), so that the blanking plates (17) are positioned in the same plane and are sequentially distributed at intervals according to the filtering diameter from large to small;

both sides of each conveying belt (12) are provided with baffle plates (18) fixed on the frame (11); except the blanking plate (17) corresponding to the innermost conveyer belt (12), a blocking plate (19) is arranged above each other blanking plate (17), the blocking plate (19) is fixed on the frame (11), and the blocking plate (19) is close to the lower surface of the conveyer belt (12) above the blocking plate; a plurality of stirring rods (181) are connected between the two baffle plates (18) at the two sides of the same conveying belt (12);

the sorting method comprises the following steps:

the first step is as follows: walnuts with clean bean curd skins are slowly put in from the outermost conveying belt (12), one end of each outermost conveying belt (12) close to the driving roller (13) is put in, each conveying belt (12) runs for a period of time towards the direction far away from the driving roller (13), the outermost conveying belt (12) drives walnuts which cannot be filtered through the filtering holes in the conveying belts (12) to enter the lower material plate (17) at the tail end of the outermost conveying belt, the walnuts which can be filtered through the filtering holes in the outermost conveying belt (12) enter the inner conveying belt (12), and the walnuts which cannot be filtered through the corresponding conveying belts (12) or cannot be filtered through the corresponding conveying belts (12) due to stacking are positioned on one side, far away from the driving roller (13), of the conveying belt (12) under the limiting action of the baffle (18) and the supporting block;

the second step is that: stopping feeding, wherein except the outermost layer of the conveyer belt (12), the conveyer belts (12) of all layers run in reverse in sequence from inside to outside, and when one conveyer belt (12) runs in reverse, the other conveyer belts (12) keep the initial running direction;

the third step: after the second step, the conveying belts (12) on the inner side of the conveying belt (12) which runs in reverse for the last time sequentially run in reverse from outside to inside, and when one conveying belt (12) runs in reverse, the other conveying belts (12) keep the initial running direction; according to the control rule of the third step, the times of reverse running of the inner layer conveyor belt (12) in any two adjacent conveyor belts (12) are more than the times of reverse running of the outer layer conveyor belt (12) adjacent to the inner layer conveyor belt;

2. The equal-size sorting method of walnuts for literary playing according to claim 1, wherein the conveyer belt (12) is made of transparent soft plastic.

3. An equal-size sorting method for walnuts for literary playing according to claim 1 or 2, wherein a plurality of limiting strips (121) are arranged on the outer side surface of the conveyer belt (12), and the limiting strips (121) are arranged along the running direction of the conveyer belt (12).

4. A method for sorting walnuts for literary playing according to claim 1 or 2, wherein one end of the blanking plate (17) is inclined to a side perpendicular to the running direction of the conveyer belt (12) so that an inclination angle between the plane of the blanking plate (17) and the plane of the conveyer belt (12) is less than 20 °.