Sieving device for wheat

Abstract

A sieving device for wheat comprises a base, a winnowing bin 21 and a storage bin 12 which are sequentially fixed from bottom to top. A sieving bin 2 is fixed to the top of the base. The interior of t

Description

SIEVING DEVICE FOR WHEAT TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of sieving for agricultural products, and in particular relates to a sieving device for wheat. BACKGROUND

[0002] Wheat is one of the most important food crops in China. The wheat, after being harvested, may be mixed with impurities such as straw, soil, sand and gravel, ropes, weeds, etc. Therefore, the newly harvested wheat needs to be subjected to impurity removal.

[0003] In the prior art, the primary sorting of the wheat is generally carried out using a vibrating screen. On one hand, a large amount of dust escapes, seriously affecting the construction environment. On the other hand, light impurities such as ropes and weeds mixed in the wheat may easily block the mesh of the vibrating screen, leading to non-ideal impurity removal effect; and the wheat needs to be sieved for several times to be cleaner, and the impurity removal efficiency is low. SUMMARY

[0004] An objective of the present disclosure is to provide a sieving device for wheat to solve the problem in the prior art, thereby preventing the dust from escaping and improving the sieving efficiency.

[0005] To achieve the objective, the present disclosure provides the following solution:

[0006] Provided is a sieving device for wheat. The sieving device for wheat comprises a base, a winnowing bin, a spiral conveyor and a storage bin which are sequentially fixed from bottom to top. A sieving bin is fixed to the top of the base, and a material receiving opening is provided on a top of the sieving bin. Interior of the winnowing bin is divided into an impurity collecting chamber and a sorting chamber by a vertical plate, an impurity discharging opening for connecting the impurity collecting chamber and the sorting chamber is provided on the vertical plate, and a blanking opening corresponding to the material receiving opening is provided on a bottom of the sorting chamber. A fan is arranged in the sorting chamber, a filter screen is fixed into the impurity collecting chamber above the impurity discharging opening, and a bag-type dust remover is connected to an upper end of the impurity collecting chamber. The storage bin is in a shape of funnel, a bottom of the storage bin is connected to a feeding opening of the spiral conveyor, a charging opening is provided on a top of the storage bin, a feeding spiral is vertically arranged in the storage bin, the feeding spiral is coupled to a feeding motor, and a discharging opening of the spiral conveyor is connected to the sorting chamber. A recycling box is slidingly connected to a lower end of the sieving bin, a motor is fixedly connected to a rear end of an inner side of the sieving bin, and a gear is fixedly connected to a tail end of a main shaft of the motor. A first sieving plate is slidingly connected to an upper end of the inner side of the sieving bin, and each of a left end and a right end of the first sieving plate is fixedly connected to a first spring respectively. The first spring located at the left end of the first sieving plate is slidingly connected to the sieving bin, the first spring located at the right end of the first sieving plate is fixedly connected to a fixing plate, and the fixing plate is slidingly connected to the sieving bin. Each of an upper end and a lower end of the fixing plate is fixedly connected to a fixing rod respectively, a fixing block is slidingly connected to a left end of an outer side of each fixing rod, and the fixing block is slidingly connected to the sieving bin. A second spring is fixedly connected to an inner side of the fixing block, and is fixedly connected to the corresponding fixing rod; a second sieving plate is slidingly connected to a lower end of the inner side of the sieving bin, and each of a left side and a right side of a lower end of the second sieving plate is fixedly connected to a supporting block respectively. A supporting plate is slidingly connected to a lower end of an outer side of each supporting block, and the supporting plates are fixedly connected to the sieving bin; one end of a fourth spring is fixedly connected to an inner side of each supporting plate, and the other end of the fourth spring is fixedly connected to the corresponding supporting block.

[0007] Optionally, a primary sieving plate is fixedly connected to one side, close to the sorting chamber, of the vertical plate, and the primary sieving plate is a continuously provided arc-shaped wavy connecting plate with through holes. A sieving press head for extruding the wheat is arranged on the primary sieving plate.

[0008] Optionally, the sieving press head comprises a rotating shaft, a press head body, a third spring and an elastomer, and the press head body is fixed to the rotating shaft; and the elastomer is connected to the press head body by the third spring.

[0009] Optionally, an impurity removing opening is provided on a bottom of the impurity collecting chamber, and a protective cover is arranged to be in fit with the impurity removing opening.

[0010] Optionally, the fan is coupled to a conveying motor of the spiral conveyor by a belt.

[0011] Optionally, a first discharging opening is fixedly connected to an upper end of a rear side of the sieving bin and penetrates through the sieving bin. A storage box is fixedly connected to a middle part of the rear side of the sieving bin.

[0012] Optionally, a movable rod is slidingly connected to an outer side of the fixing block and is slidingly connected to the sieving bin.

[0013] Optionally, teeth are fixedly connected to a middle part of a lower end of the first sieving plate, and the gear is meshed with the teeth.

[0014] Optionally, a second discharging opening is fixedly connected to a lower end of a right side of the sieving bin and penetrates through the sieving bin.

[0015] Compared with the prior art, the present disclosure achieves the following technical effects:

[0016] Through the arrangement of a first sieving plate, a second sieving plate, a motor and teeth, when the wheat is poured above the sieving bin and passes through the first sieving plate, the motor rotates to drive the gear to be meshed with the teeth, the first sieving plate may shake left and right, first springs are stressed to sieve materials at the upper end of the first sieving plate to the second sieving plate. As sieve pores of the first sieving plate are larger than those of the second sieving plate, the wheat screened out by the second sieving plate is cleaner, avoiding repeated sieving using equipment, and improving the efficiency. Through the arrangement of a fixing plate, movable rods, the first springs and fixing blocks, when it is necessary to replace the first sieving plate with a new one, the movable rods at the right end of the sieving bin can be pressed so as to press the fixing blocks into grooves in the fixing rods, such that the fixing rods can drive the fixing plate to be drawn out of the sieving bin, and then the first sieving plate is driven to be drawn out of the sieving bin, facilitating the replacement and cleaning of the first sieving plate. When an elastomer is in contact with the wheat, the damage to the wheat caused by large force can be avoided. Through the arrangement of a winnowing bin, light impurities such as ropes and weeds mixed in the wheat can be removed so as to effectively prevent the filter screen from being blocked and improving the sieving efficiency. Through the arrangement of a bag-type dust remover, the dust can be prevented from escaping, and the construction environment is protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To describe the technical solutions in the embodiments of the present disclosure or in the prior art more clearly, the following briefly introduces the accompanying drawings required for describing the embodiments. Apparently, the accompanying drawings in the following description show merely some embodiments of the present disclosure, and a person of ordinary skill in the art may still derive other drawings from these accompanying drawings without creative efforts.

[0018] FIG. 1 is a structure schematic diagram of a sieving device for wheat in accordance with the present disclosure;

[0019] FIG. 2 is a structure schematic diagram of portion A of FIG. 1 in accordance with the present disclosure;

[0020] FIG. 3 is a structure schematic diagram of portion B of FIG. 1 in accordance with the present disclosure;

[0021] FIG. 4 is a structure schematic diagram of a sieving press head in accordance with the present disclosure.

[0022] In the drawings: 100-sieving device for wheat; 1-base; 2-sieving bin; 3-sorting chamber; 4-fan; 5-belt; 6-vertical plate; 7-discharging opening; 8-conveying motor; 9-spiral conveyor; 10-blanking opening; 11-feeding spiral; 12-storage bin; 13-feeding motor; 14-charging opening; 15-bag-type dust remover; 16-filter screen; 17-impurity discharging opening; 18-impurity collecting chamber; 19-impurity removing opening; 20-protective cap; 21-winnowing bin; 22-sieving press head; 23-primary sieving plate; 24-rotating shaft; 25-press head body; 26-elastomer; 27-first discharging opening; 28-fourth spring; 29-recycling box; 30-motor; 31-gear; 32-first sieving plate; 33-first spring; 34-fixing plate; 35-fixing rod; 36-second spring; 37-fixing block; 38-movable rod; 39-teeth; 40-second sieving plate; 41-supporting block; 42-supporting plate; 43-third spring; 44-second discharging opening. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following clearly and completely describes the technical solutions in the embodiments of the present disclosure with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are merely a part rather than all of the embodiments of the present disclosure. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present disclosure without creative efforts shall fall within the scope of the present disclosure.

[0024] An objective of the present disclosure is to provide a sieving device for wheat to solve the problem in the prior art, thereby preventing the dust from escaping and improving the sieving efficiency.

[0025] To make the objective, the features and advantages of the present disclosure more apparently and understandably, the following will further describe the present disclosure in detail with reference to the accompanying drawings and specific embodiments.

[0026] As shown in FIG.1, FIG. 2, FIG. 3 and FIG. 4, the present disclosure provides a sieving device for wheat 100. The sieving device for wheat 100 comprises a base 1, a winnowing bin 21, a spiral conveyor 9 and a storage bin 12 which are fixed from bottom to top in sequence. A sieving bin 2 is fixed to the top of the base 1, and a material receiving opening is provided on the top of the sieving bin 2. The interior of the winnowing bin 21 is divided into an impurity collecting chamber 18 and a sorting chamber 3 by a vertical plate 6, an impurity discharging opening 17 for connecting the impurity collecting chamber 18 and the sorting chamber 3 is provided on the vertical plate 6, and a blanking opening 10 corresponding to the material receiving opening is provided on a bottom of the sorting chamber 3. A fan 4 is arranged in the sorting chamber 3, and a filter screen 16 is fixed into the impurity collecting chamber 18 above the impurity discharging opening 17. A bag-type dust remover 15 is connected to the upper end of the impurity collecting chamber 18, an impurity removing opening 19 is provided on the bottom of the impurity collecting chamber 18, and a protective cap 20 is arranged to be in fit with the impurity removing opening 19. The fan 4 is coupled with a conveying motor 8 of the spiral conveyor 9 by a belt 5. The storage bin 12 is in a shape of funnel, the bottom of the storage bin 12 is connected to a feeding opening of the spiral conveyor 9, a charging opening 14 is provided on the top of the storage bin 12, a feeding spiral 11 is vertically arranged in the storage bin 12, a feeding motor 13 is coupled to the feeding spiral 11, and a discharging opening 7 of the spiral conveyor 9 is connected to the sorting chamber 3. A recycling box 29 is slidingly connected to the lower end of the sieving bin 2, a motor 30 is fixedly connected to the rear end of the inner side of the sieving bin 2, and a gear 31 is fixedly connected to the tail end of a main shaft of the motor 30. A first sieving plate 32 is slidingly connected to the upper end of the inner side of the sieving bin 2, and each of the left end and the right end of the first sieving plate 32 is fixedly connected to a first spring 33 respectively. The first spring 33 located at the left end of the first sieving plate 32 is slidingly connected to the sieving bin 2, the first spring 33 located at the right end of the first sieving plate 32 is fixedly connected to a fixing plate 34, and the fixing plate 34 is slidingly connected to the sieving bin 2. Each of the upper end and the lower end of the fixing plate 34 is fixedly connected to a fixing rod 35 respectively, a fixing block 37 is slidingly connected to the left end of the outer side of each fixing rod 35, and the fixing block 37 is slidingly connected to the sieving bin 2. A second spring 36 is fixedly connected to the inner side of the fixing block 37, and is fixedly connected to the corresponding fixing rod 35 . A second sieving plate 40 is slidingly connected to the lower end of the inner side of the sieving bin 2, and each of the left side and the right side of the lower end of the second sieving plate 40 is fixedly connected to a supporting block 41 respectively. A supporting plate 42 is slidingly connected to the lower end of the outer side of each supporting block 41, and the supporting plates 42 are fixedly connected to the sieving bin 2. One end of a fourth spring 28 is fixedly connected to the inner side of each supporting plate 42, and the other end of the fourth spring 28 is fixedly connected to the corresponding supporting block 41.A first discharging opening 27 is fixedly connected to the upper end of the rear side of the sieving bin 2 and penetrates through the sieving bin 2. A storage box is fixedly connected to the middle part of the rear side of the sieving bin 2. A movable rod 38 is slidingly connected to the outer side of the fixing block 37, and the movable rods 38 are slidingly connected to the sieving bin 2. Teeth 39 are fixedly connected to the middle part of the lower end of the first sieving plate 32, and the gear 31 is meshed with the teeth 39. A second discharging opening 44 is fixedly connected to the lower end of the right side of the sieving bin 2 and penetrates through the sieving bin 2.

[0027] Further, preferably, a primary sieving plate 23 is fixedly connected to one side, close to the sorting chamber 3, of the vertical plate 6, and the primary sieving plate 23 is a continuously provided arc-shaped wavy connecting plate with through holes. A sieving press head 22 for extruding wheat is arranged above the primary sieving plate 23. The sieving press head 22 comprises a rotating shaft 24, a press head body 25, a third spring 43 and an elastomer 26. The press head body 25 is fixed to the rotating shaft 24 and the elastomer 26 is connected to the press head body 25 by means of the third spring 43.

[0028] During use, the newly harvested wheat is charged into the storage bin 12 through the charging opening 14, the feeding motor 13 acts to make the feeding spiral 11 rotate so that the wheat enters the spiral conveyor 9, and then the wheat is conveyed into the sorting chamber 3 under the action of the spiral conveyor 9. Under the pressing action of the primary sieving plate 23 and the sieving press head 22, impurities attached to the surface of the wheat are separated from the wheat, and under the driving of the rotation of the sieving press head, the wheat and the impurities fall from the tail end of the primary sieving plate 23. The primary sieving plate 23 is located above the fan 4, and a large gap is formed between the primary sieving plate 23 and the inner wall of the sorting chamber 3, thus facilitating the separated wheat and impurities to fall from the gap. Under the action of the fan 4, light impurities such as ropes, weeds and dust are blown into the impurity collecting chamber 18, and under the action of the filter screen 16, the impurities such as ropes, weeds are left in the impurity collecting chamber 18, the dust is eliminated by means of the bag-type dust remover 15, and the winnowed wheat enters the sieving bin 2 through the blanking opening 10. When the wheat passes through the first sieving plate 32, a motor rotates to drive the gear 31 to be meshed with the teeth 39, the first sieving plate 32 may shake left and right, and the first springs 33 are stressed to sieve materials at the upper end of the first sieving plate 32 onto the second sieving plate 40. As sieve pores of the first sieving plate 32 are larger than those of the second sieving plate 40, the wheat screened out by the second sieving plate 40 is cleaner, and impurities screened out by the first sieving plate 32 naturally fall into the storage box through the first discharging opening 27 at the rear end of the sieving bin 2 for recycling and screening. When the wheat falls onto the second sieving plate 40, the second springs 36 in the supporting plates 42 are pressed by the supporting blocks 41 under the action of gravity of the wheat, such that the second sieving plate 40 vibrates to screen out the wheat on the second sieving plate 40, the screened impurities are discharged through the second discharging opening 44 at the right end of the sieving bin 2, and the remaining clean materials fall into the recycling box 29 under the action of inertia. When it is necessary to replace the first sieving plate with a new one, the movable rods 38 at the right end of the sieving bin 2 can be pressed so as to press the fixing blocks 37 back into grooves of the fixing rods 35, such that the fixing rods 35 can drive the fixing plate 34 to be drawn out of the sieving bin 2, and then the first sieving plate 32 is driven to be drawn out of the sieving bin 2, facilitating the replacement and cleaning of the first sieving plate. The fixing blocks 37 cannot be pressed in a case that the movable rods 38 are not stressed.

[0029] In the description of the present disclosure, it needs to be noted that the orientation or positional relationship indicated by terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inside", "outside" is based on the orientation or positional relationship shown in the drawings only for convenience of description of the present disclosure and simplification of description rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus are not to be construed as limiting the present disclosure. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

[0030] Several examples are used for illustration of the principles and implementation methods of the present disclosure. The description of the embodiments is merely used to help illustrate the method and its core principles of the present disclosure. In addition, a person of ordinary skill in the art can make various modifications in terms of specific embodiments and scope of application in accordance with the teachings of the present disclosure. In conclusion, the content of this specification shall not be construed as a limitation to the present disclosure.

Claims

WHAT IS CLAIMED IS: 1.A sieving device for wheat, comprising a base, a winnowing bin, a spiral conveyor and a storage bin which are sequentially fixed from bottom to top; wherein a sieving bin is fixed to a top of the base, and a material receiving opening is provided on a top of the sieving bin; wherein an interior of the winnowing bin is divided into an impurity collecting chamber and a sorting chamber by a vertical plate, an impurity discharging opening for connecting the impurity collecting chamber and the sorting chamber is provided on the vertical plate, and a blanking opening corresponding to the material receiving opening is provided on a bottom of the sorting chamber; wherein a fan is arranged in the sorting chamber, and a filter screen is fixed into the impurity collecting chamber above the impurity discharging opening, and a bag-type dust remover is connected to an upper end of the impurity collecting chamber; wherein the storage bin is in a shape of funnel, a bottom of the storage bin is connected to a feeding opening of the spiral conveyor, a charging opening is provided on a top of the storage bin, a feeding spiral is vertically arranged in the storage bin, the feeding spiral is coupled to a feeding motor, and a discharging opening of the spiral conveyor is connected to the sorting chamber; wherein a recycling box is slidingly connected to a lower end of the sieving bin, a motor is fixedly connected to a rear end of an inner side of the sieving bin, and a gear is fixedly connected to a tail end of a main shaft of the motor; wherein a first sieving plate is slidingly connected to an upper end of the inner side of the sieving bin, and each of a left end and a right end of the first sieving plate is fixedly connected to a first spring respectively; the first spring located at the left end of the first sieving plate is slidingly connected to the sieving bin, the first spring located at the right end of the first sieving plate is fixedly connected to a fixing plate, and the fixing plate is slidingly connected to the sieving bin; wherein each of an upper end and a lower end of the fixing plate is fixedly connected to a fixing rod respectively, a fixing block is slidingly connected to a left end of an outer side of each fixing rod, and the fixing block is slidingly connected to the sieving bin; wherein a second spring is fixedly connected to an inner side of each fixing block, and is fixedly connected to a corresponding fixing rod; wherein a second sieving plate is slidingly connected to a lower end of the inner side of the sieving bin, and each of a left side and a right side of a lower end of the second sieving plate is fixedly connected to a supporting block respectively; wherein a supporting plate is slidingly connected to a lower end of an outer side of each supporting block, and the supporting plates are fixedly connected to the sieving bin; one end of a fourth spring is fixedly connected to an inner side of the supporting plate, and another end of the fourth spring is fixedly connected to a corresponding supporting block.

2. The sieving device for wheat according to claim 1, wherein a primary sieving plate is fixedly connected to one side, close to the sorting chamber, of the vertical plate, and the primary sieving plate is a continuously provided arc-shaped wavy connecting plate with through holes, and a sieving press head for extruding wheat is arranged above the primary sieving plate.

3. The sieving device for wheat according to claim 1, wherein the sieving press head comprises a rotating shaft, a press head body, a third spring and an elastomer, and the press head body is fixed to the rotating shaft; the elastomer is connected to the press head body by the third spring.

4. The sieving device for wheat according to claim 1, wherein an impurity removing opening is provided on a bottom of the impurity collecting chamber, and a protective cover is arranged to be in fit with the impurity removing opening.

5. The sieving device for wheat according to claim 1, wherein the fan is coupled to a conveying motor of the spiral conveyor by a belt.

6. The sieving device for wheat according to claim 1, wherein a first discharging opening is fixedly connected to an upper end of a rear side of the sieving bin and penetrates through the sieving bin, and a storage box is fixedly connected to a middle part of the rear side of the sieving bin.

7. The sieving device for wheat according to claim 1, wherein a movable rod is slidingly connected to an outer side of the fixing block, and is slidingly connected to the sieving bin.

8. The sieving device for wheat according to claim 1, wherein teeth are fixedly connected to a middle part of a lower end of the first sieving plate, and the gear is meshed with the teeth.

9. The sieving device for wheat according to claim 1, wherein a second discharging opening is fixedly connected to a lower end of a right side of the sieving bin and penetrates through the sieving bin.

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