CN215198223U - Small-sized movable tea winnowing machine for tea continuous production line - Google Patents

Abstract

The utility model relates to a small-size portable tealeaves air separator for tealeaves continuous production line, including the selection by winnowing machine case, the inside of selection by winnowing machine case forms first screening space, second screening space and the third screening space that carries out tertiary screening in proper order to tealeaves, the selection by winnowing machine case on still be equipped with the first discharge gate of first screening space intercommunication, with the second discharge gate of second screening space intercommunication and with the third discharge gate of third screening space intercommunication, the side of selection by winnowing machine case is equipped with feed arrangement, feed arrangement's discharge end and the pan feeding mouth intercommunication of setting on the selection by winnowing machine case, and pan feeding mouth and first screening space communicate with each other. According to the technical scheme, the tea leaf sorting machine can sort out tea leaves with different qualities from the three discharge ports through the action of the air blower, so that the sorting of the tea leaves is more precise; and simultaneously, the utility model discloses structural design is compact, and area is little, and easy operation can produce in succession, and production efficiency is higher.

Description

Small-sized movable tea winnowing machine for tea continuous production line

Technical Field

The utility model relates to a tealeaves screening field, concretely relates to small-size portable tealeaves air separator for tealeaves continuous production line.

Background

Tea leaves have been used as special drinks in China for thousands of years, the tea yield in China is huge every year, and the consumption of tea leaves is on a continuous rising trend along with the development of society. During the picking, processing and transportation of the tea, some impurities are inevitably mixed into the tea, and some broken tea and tea dust are also generated, which seriously influences the quality and taste of the tea. In order to ensure the quality of tea, impurity removal treatment in tea processing is a necessary process in tea processing, and meanwhile, in order to ensure the consistency of tea quality, tea with different sizes needs to be subjected to classification screening treatment. At present, a winnowing mode is mostly adopted for grading screening and impurity removal of tea, but most winnowing machines are complex in structure, large in size and single in function at present and cannot be effectively adjusted, so that the problems that the current tea winnowing machines are complex in operation, unsatisfactory in effect, low in working efficiency and the like are caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned drawback, provide a small-size portable tealeaves air separator for tealeaves continuous production line.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the tea leaf screening machine comprises a winnowing machine box, wherein a first screening space, a second screening space and a third screening space for sequentially carrying out three-stage screening on tea leaves are formed in the winnowing machine box, a first discharge port communicated with the first screening space, a second discharge port communicated with the second screening space and a third discharge port communicated with the third screening space are further formed in the winnowing machine box, a feeding device is arranged beside the winnowing machine box, the discharge end of the feeding device is communicated with a feed port arranged on the winnowing machine box, the feed port is communicated with the first screening space, an air blower is arranged at the bottom of the first screening space, a first screen obliquely arranged along the horizontal direction is arranged above the air blower, an air outlet of the air blower points to the bottom surface of the first screen, the lower end of the first screen is communicated with the first discharge port, and a second screen for separating the second screening space from the third screening space is arranged between the second screening space and the third screening space, the second screen cloth be vertical direction and arrange, third screening space in be equipped with the third screen cloth that is used for ash debris discharge air separator case, tealeaves gets into first screening space by the pan feeding mouth, the tealeaves that accords with one-level screening condition falls to first screen cloth and selects via first discharge gate, surplus tealeaves is blown to second screening space by the air-blower, wherein: the tealeaves that accords with the second grade screening condition is elected by the second discharge gate, and the tealeaves that accords with the third grade screening condition passes third screen cloth and gets into third screening space and select via the third discharge gate.

Winnowing machine case for vertical placing and wholly be square thin wall machine case, enclose by preceding wallboard, back wallboard, left wallboard, right wallboard, go up wallboard and lower wallboard and establish and form, wherein: the front wall plate, the rear wall plate and the left wall plate are flat plates which are vertically arranged, the right wall plate is composed of a vertical plate arranged in the vertical direction and an arc plate connecting the vertical plate with the upper wall plate, the vertical plate and the arc plate are of an integrated structure, the lower wall plate is a non-flat plate formed by connecting multiple planes, the first screening space, the second screening space and the third screening space are distributed in the winnowing machine case from right to left in an equal width mode, a feeding port of the winnowing machine case is located on the front wall plate corresponding to the first screening space, and the feeding port is a rectangular feeding port protruding out of the front wall plate.

First discharge gate and third discharge gate set up on the wallboard in the back, the second discharge gate set up in the front on the wallboard, first discharge gate, second discharge gate and third discharge gate be the logical groove that the cross-section is the rectangle, and first discharge gate, second discharge gate and third discharge gate all incline to arrange, its feed end all is higher than the discharge end.

The front end and the rear end of the first screen are respectively connected with the front wall plate and the rear wall plate, one end of the first screen, which is connected with the front wall plate, is higher than one end of the first screen, which is connected with the rear wall plate, and the inclined angle of the first screen is the same as that of the first discharge hole; the front end and the rear end of the second screen are respectively connected with the front wall plate and the rear wall plate, gaps are reserved between the upper end and the lower end of the second screen and the upper wall plate and the lower wall plate respectively, the lower wall plate corresponding to the second screening space is a first flat plate with the inclination angle consistent with that of the second discharge hole, and the bottom surfaces of the first flat plate and the second discharge hole are flush; the lower wall plate corresponding to the third screening space is a second flat plate with the inclination angle consistent with that of the third discharge hole, and the second flat plate is flush with the bottom surface of the third discharge hole.

The third screen cloth set up two, two third screen cloths are located last wallboard and left wallboard respectively, and two third screen cloths form the right angle and buckle the form wholly.

Feed arrangement including the square feeder hopper that the import is big, the export is little, still including setting up the feed chute under the feeder hopper and the electromagnetic type swing feeder that links to each other with the feed chute, the discharge end and the pan feeding mouth intercommunication of feed chute, the last swing board of electromagnetic type swing feeder is fixed mutually with the bottom surface of feed chute, the bottom plate of electromagnetic type swing feeder links to each other through the outer wall and the first leg of horizontal bracing piece with the selection by winnowing machine case, the top of first leg and the outer wall connection of fighting of feeder hopper, still be equipped with the bracing piece of being connected between the bottom surface of horizontal bracing piece and the first leg between be connected between them.

The air blower is connected with the induced air pipe, the air inlet of the induced air pipe is connected with the air blower, the air outlet of the induced air pipe is horizontally arranged upwards, the induced air pipe is a horn-shaped pipe with a small air inlet and a large air outlet, and the air blower is a variable frequency fan.

The front wall plate of the winnowing machine box is provided with a controller electrically connected with the electromagnetic swing feeder, a variable frequency speed regulator electrically connected with the air blower, and a protective cover used for shielding the controller and the variable frequency speed regulator, wherein the protective cover is an inverted U-shaped plate.

The lower wall plate of the winnowing machine case is provided with a second supporting leg and a third supporting leg, the second supporting leg, the third supporting leg and the first supporting leg form a support for the winnowing machine case and the feeding device, and universal wheels are arranged at the bottoms of the first supporting leg, the second supporting leg and the third supporting leg.

According to the technical scheme, the tea leaf sorting machine can sort out tea leaves with different qualities from the three discharge ports through the action of the air blower, so that the sorting of the tea leaves is more precise; and simultaneously, the utility model discloses structural design is compact, and area is little, and easy operation can produce in succession, and production efficiency is higher.

Drawings

Fig. 1 is a first schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a third schematic structural diagram of the present invention.

Fig. 4 is a schematic view of the internal structure of the present invention.

Fig. 5 is a schematic diagram of the internal structure of the present invention.

The reference symbols in the above figures are: the air separation machine box 1, a front wall plate 101, a rear wall plate 102, a left wall plate 103, a right wall plate 104, a vertical plate 1041, an arc plate 1042, an upper wall plate 105, a lower wall plate 106, a first flat plate 1061, a second flat plate 1062, a third flat plate 1063, a first screening space 110, a second screening space 120, a third screening space 130, a first discharge port 11, a second discharge port 12, a third discharge port 13, a feeding port 14, a blower 15, an induced duct 151, a variable frequency speed governor 152, a first screen 16, a second screen 17, a third screen 18, a feeding device 2, a feeding hopper 21, a feeding chute 22, an electromagnetic swing feeder 23, a controller 231, a first leg 3, a transverse support rod 31, an inclined support rod 32, a second leg 4, a third leg 5 and a protective cover 6.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1 to 5, a small mobile tea winnowing machine for a tea continuous production line comprises a winnowing machine case 1, a first screening space 110, a second screening space 120 and a third screening space 130 for sequentially carrying out three-stage screening on tea are formed inside the winnowing machine case 1, a first discharge port 11 communicated with the first screening space 110, a second discharge port 12 communicated with the second screening space 120 and a third discharge port 13 communicated with the third screening space 130 are further arranged on the winnowing machine case 1, a feeding device 2 is arranged beside the winnowing machine case 1, a discharge end of the feeding device 2 is communicated with a feeding port 14 arranged on the winnowing machine case 1, the feeding port 14 is communicated with the first screening space 110, an air blower 15 is arranged at the bottom of the first screening space 110, a first screen 16 obliquely arranged along the horizontal direction is arranged above the air blower 15, and an air outlet of the air blower 15 points to the bottom surface of the first screen 16, and the lower one end of first screen cloth 16 communicates with first discharge gate 11, be equipped with between second screening space 120 and the third screening space 130 and separate second screen cloth 17 between them, second screen cloth 17 is vertical direction and arranges, be equipped with the third screen cloth 18 that is used for discharging ash debris air separator case 1 in the third screening space 130, tealeaves gets into first screening space 110 by pan feeding mouth 14, the tealeaves that accords with one-level screening condition falls to first screen cloth 16 and selects via first discharge gate 11, surplus tealeaves is blown to second screening space 120 by air-blower 15, wherein: the tea leaves meeting the second-stage screening conditions are selected through the second discharge port 12, and the tea leaves meeting the third-stage screening conditions pass through the third screen 18, enter the third screening space 130 and are selected through the third discharge port 13.

Further, winnowing machine case 1 is vertical place and wholly is square thin wall machine case, encloses by front wall board 101, back wallboard 102, left wallboard 103, right wallboard 104, last wallboard 105 and lower wallboard 106 and establishes and form, wherein: the front wall plate 101, the rear wall plate 102 and the left wall plate 103 are all vertically arranged flat plates, the right wall plate 104 is composed of a vertical plate 1041 arranged in the vertical direction and an arc plate 1042 connecting the vertical plate 1041 with the upper wall plate 105, the vertical plate 1041 and the arc plate 1042 are of an integral structure, the lower wall plate 106 is a non-flat plate formed by connecting multiple planes, specifically, the lower wall plate 106 comprises a third flat plate 1063 corresponding to the first screening space, a first flat plate 1061 corresponding to the second screening space and a second flat plate 1062 corresponding to the third screening space, the third flat plate 1063 is arranged horizontally, the blower 15 is arranged on the third flat plate 1063, the second flat plate 1062 and the first flat plate 1061 are arranged obliquely, the lower wall plate 106 further comprises a longitudinally arranged plate 1063 connected respectively, the connecting plates of the first plate 1061 and the second plate 1062, the third plate 1063, the first plate 1061, the second plate 1062 and the connecting plates are of an integral structure. The first screening space 110, the second screening space 120 and the third screening space 130 are distributed in the same width from right to left inside the air separation case 1, the material inlet 14 of the air separation case 1 is located on the front wall board 101 corresponding to the first screening space 110, and the material inlet 14 is a rectangular material inlet protruding out of the front wall board 101.

Further, first discharge gate 11 and third discharge gate 13 set up on back wallboard 102, and second discharge gate 12 sets up on preceding wallboard 101, and first discharge gate 11, second discharge gate 12 and third discharge gate 13 are the logical groove that the cross-section is the rectangle, and first discharge gate 11, second discharge gate 12 and third discharge gate 13 all incline to arrange, and its feed end all is higher than the discharge end.

The front end and the rear end of the first screen 16 are respectively connected with the front wall plate 101 and the rear wall plate 102, the end of the first screen 16 connected with the front wall plate 101 is higher than the end of the first screen 16 connected with the rear wall plate 102, and the inclination angle of the first screen 16 is the same as that of the first discharge port 11; the front end and the rear end of the second screen 17 are respectively connected with the front wall plate 101 and the rear wall plate 102, the upper end and the lower end of the second screen 17 respectively leave a gap with the upper wall plate 105 and the lower wall plate 106, the lower wall plate corresponding to the second screening space 120 is a first flat plate 1061 with the same inclination angle as the second discharge port 12, and the first flat plate 1061 is flush with the bottom surface of the second discharge port 12; the lower wall plate corresponding to the third screening space 130 is a second flat plate 1062 having an inclination angle consistent with that of the third discharge hole 13, and the second flat plate 1062 is flush with the bottom surface of the third discharge hole 13. Preferably, the first plate 1061 and the groove bottom of the second discharge hole 12 share one plate, and the second plate 1062 and the groove bottom of the third discharge hole 13 share one plate.

The number of the third screens 18 is two, two of the third screens 18 are respectively positioned on the upper wall plate 105 and the left wall plate 103, and the two third screens 18 are integrally formed into a right-angled bent shape, that is, the two third screens are respectively positioned on the left half part of the upper wall plate 105 and the upper half part of the left wall plate 103.

Further, the feeding device 2 comprises a square feeding hopper 21 with a large inlet and a small outlet, and further comprises a feeding chute 22 arranged right below the feeding hopper 21 and an electromagnetic type swing feeder 23 connected with the feeding chute 22, wherein the discharge end of the feeding chute 22 is communicated with the feeding port 14, an upper swing plate of the electromagnetic type swing feeder 23 is fixed with the bottom surface of the feeding chute 22, a lower fixed plate of the electromagnetic type swing feeder 23 is connected with the outer wall of the winnowing machine case 1 and the first leg 3 through a transverse support rod 31, the top of the first leg 3 is connected with the outer hopper wall of the feeding hopper 21, and an inclined support rod 32 for connecting the bottom surface of the transverse support rod 31 and the first leg 3 is further arranged between the bottom surface of the transverse support rod 31 and the first leg 3.

The air blower 15 is connected with the induced air pipe 151, an air inlet of the induced air pipe 151 is connected with the air blower 15, an air outlet of the induced air pipe 151 is horizontally arranged upwards, the induced air pipe 151 is a horn-shaped pipe with a small air inlet and a large air outlet, and the air blower 15 is a variable frequency fan.

The front panel 101 of the air separation machine case 1 is provided with a controller 231 electrically connected with the electromagnetic swing feeder 23, a variable frequency speed regulator 152 electrically connected with the blower 15, and a protective cover 6 for shielding the controller 231 and the variable frequency speed regulator 152, wherein the protective cover 6 is an inverted U-shaped plate.

The lower wall plate 106 of the winnowing machine case 1 is provided with a second supporting leg 4 and a third supporting leg 5, the second supporting leg 4, the third supporting leg 5 and the first supporting leg 3 form a support for the winnowing machine case 1 and the feeding device 2, and the bottoms of the first supporting leg 3, the second supporting leg 4 and the third supporting leg 5 are all provided with universal wheels.

The utility model discloses a theory of operation and working process as follows:

tea leaves to be classified are poured into the feeding hopper 21 of the feeding device 2, the tea leaves fall into the feeding groove 22 through the inner wall surface of the feeding hopper 21 under the action of self gravity, meanwhile, the electromagnetic type swinging feeder 23 generates slow-feeding and fast-retreating linear reciprocating motion under the control of the controller 231, drives the feeding groove 22 fixed on the electromagnetic type swinging feeder to realize reciprocating front-and-back motion, and uniformly conveys the tea leaves into the air sorting case 1 through the feeding port 14; then, the tea leaves entering the first screening space 110 at the right side of the winnowing machine box 1 are blown up by the blower 15 arranged at the bottom of the first screening space 110, and the tea leaves with the weight and the volume reaching the first grade fall onto the first screen 16, slide along the upper surface of the first screen 16 and finally fall into the first-grade tea leaf collecting device through the first discharge hole 11; the rest tea leaves are blown upwards by the blower 15, enter the second screening space 120 in the middle of the air separation case 1 along the inner wall surface of the arc-shaped plate 1042 at the upper right side of the air separation case 1, wherein part of the tea leaves with the weight and the volume reaching the second grade standard cannot pass through the second screen 17, finally fall onto the first flat plate 1061 corresponding to the second screening space 120, and fall into the second-grade tea leaf collecting device through the second discharge port 12 along the inclined plate surface; the impurities, tea dust and tea residues in the tea leaves passing through the second screen 17 are blown out of the winnowing machine case 1 through the two third screens 18 under the action of residual wind because of light weight, and are collected by the impurity collecting device so as to be convenient for subsequent treatment; finally, among the tea leaves passing through the second screen 17, the tea leaves with the quality and size meeting the third-stage tea standard are blocked by the third screen 18 or naturally fall down, fall onto the second plate 1062 corresponding to the third screening space 130 of the air separation case 1, and enter the third-stage tea collection device through the third discharge port 13, so that the air separation treatment of the tea leaves is completed. The blowing speed and the feeding speed of the blower 15 can be adjusted according to the specific conditions of the tea leaves so as to achieve the ideal air separation grading effect.

The beneficial effects of the utility model reside in that: 1) the utility model discloses a selection by winnowing machine case and feed arrangement are arranged to vertical mode, and structure and space reasonable in design have characteristics of showing that small, occupation space and place are little to adopt to remove the support, can match various continuous production lines in a flexible way, accomplish the hierarchical selection by winnowing function of tealeaves. 2) The utility model discloses multiple screen cloth that quick-witted incasement portion of selection by winnowing was arranged, with the functional area division of selection by winnowing machine incasement portion reasonable in design and the mutually supporting of inner wall surface plane and arcwall face, realized the selection by winnowing classification function of tealeaves, the simple reasonable in design, compact structure. 3) The utility model discloses a variable frequency speed regulator and controller adjust air-blower air-out speed and tealeaves input speed, can reach the fan grading effect of ideal according to the real-time adjustment control parameter of difference between the different tealeaves, have also promoted simultaneously greatly the utility model discloses an application scope and result of use.

The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.

Claims (9)

1. The utility model provides a small-size portable tealeaves air separator for tealeaves continuous production line which characterized in that: comprises a winnowing machine box (1), a first screening space (110), a second screening space (120) and a third screening space (130) for sequentially carrying out three-level screening on tea are formed in the winnowing machine box (1), a first discharge port (11) communicated with the first screening space (110), a second discharge port (12) communicated with the second screening space (120) and a third discharge port (13) communicated with the third screening space (130) are also arranged on the winnowing machine box (1), a feeding device (2) is arranged beside the winnowing machine box (1), the discharge end of the feeding device (2) is communicated with a feeding port (14) arranged on the winnowing machine box (1), the feeding port (14) is communicated with the first screening space (110), an air blower (15) is arranged at the bottom of the first screening space (110), a first screen mesh (16) obliquely arranged along the horizontal direction is arranged above the air blower (15), the bottom surface of the directional first screen cloth (16) of air-blower's (15) air outlet, and the lower one end and first discharge gate (11) intercommunication of first screen cloth (16), second screening space (120) and third screening space (130) between be equipped with second screen cloth (17) of separating both, second screen cloth (17) be vertical direction and arrange, third screening space (130) in be equipped with third screen cloth (18) that are used for discharging ash debris air separator case (1), tealeaves gets into first screening space (110) by pan feeding mouth (14), the tealeaves that accords with one-level screening condition fall to first screen cloth (16) and select via first discharge gate (11), surplus tealeaves is blown to second screening space (120) by air-blower (15), wherein: the tea which accords with the secondary screening condition is selected by the second discharge port (12), and the tea which accords with the tertiary screening condition passes through the third screen (18), enters the third screening space (130) and is selected by the third discharge port (13).

2. A small mobile tea winnower for a continuous tea production line as claimed in claim 1, wherein: winnowing machine case (1) for vertical placing and wholly be square thin wall machine case, enclose by preceding wallboard (101), back wallboard (102), left wallboard (103), right wallboard (104), go up wallboard (105) and lower wallboard (106) and establish and form, wherein: the front wall plate (101), the rear wall plate (102) and the left wall plate (103) are flat plates which are vertically arranged, the right wall plate (104) is composed of a vertical plate (1041) arranged in the vertical direction and an arc plate (1042) connected with the vertical plate (1041) and the upper wall plate (105), the vertical plate (1041) and the arc plate (1042) are of an integral structure, the lower wall plate (106) is a non-flat plate formed by connecting multiple planes, the first screening space (110), the second screening space (120) and the third screening space (130) are distributed in the air separation case (1) from right to left in an equal width mode, a feeding port (14) of the air separation case (1) is located on the front wall plate (101) corresponding to the first screening space (110), and the feeding port (14) is a rectangular feeding port protruding out of the front wall plate (101).

3. A small mobile tea winnower for a continuous tea production line as claimed in claim 2, wherein: first discharge gate (11) and third discharge gate (13) set up on back wallboard (102), second discharge gate (12) set up on preceding wallboard (101), first discharge gate (11), second discharge gate (12) and third discharge gate (13) be the logical groove that the cross-section is the rectangle, and first discharge gate (11), second discharge gate (12) and third discharge gate (13) all incline to arrange, its feed end all is higher than the discharge end.

4. A small mobile tea winnower for a continuous tea production line as claimed in claim 3, wherein: the front end and the rear end of the first screen (16) are respectively connected with the front wall plate (101) and the rear wall plate (102), the end, connected with the front wall plate (101), of the first screen (16) is higher than the end, connected with the rear wall plate (102), of the first screen (16), and the inclined angle of the first screen (16) is the same as that of the first discharge hole (11); the front end and the rear end of the second screen mesh (17) are respectively connected with the front wall plate (101) and the rear wall plate (102), gaps are respectively reserved between the upper end and the lower end of the second screen mesh (17) and the upper wall plate (105) and the lower wall plate (106), the lower wall plate corresponding to the second screening space (120) is a first flat plate with the same inclination angle with the second discharge hole (12), and the first flat plate is flush with the bottom surface of the second discharge hole (12); the lower wall plate corresponding to the third screening space (130) is a second flat plate with the inclination angle consistent with that of the third discharge hole (13), and the second flat plate is flush with the bottom surface of the third discharge hole (13).

5. A small mobile tea winnower for a continuous tea production line as claimed in claim 2, wherein: the number of the third screens (18) is two, the two third screens (18) are respectively positioned on the upper wall plate (105) and the left wall plate (103), and the two third screens (18) are integrally formed into a right-angle bent shape.

6. A small mobile tea winnower for a continuous tea production line as claimed in claim 1, wherein: feed arrangement (2) including import big, the little square feeder hopper (21) of export, still including setting up feed chute (22) under feed hopper (21) and electromagnetic type swing feeder (23) that link to each other with feed chute (22), the discharge end and pan feeding mouth (14) intercommunication of feed chute (22), the last swing board of electromagnetic type swing feeder (23) is fixed mutually with the bottom surface of feed chute (22), the bottom plate of electromagnetic type swing feeder (23) passes through transverse support pole (31) and links to each other with outer wall and first landing leg (3) of air separator case (1), the top of first landing leg (3) is connected with the outer hopper wall of feed hopper (21), still be equipped with between the bottom surface of transverse support pole (31) and first landing leg (3) and be connected diagonal support pole (32) between them.

7. A small mobile tea winnower for a continuous tea production line as claimed in claim 1, wherein: air-blower (15) link to each other with induced duct (151), the air intake and air-blower (15) of induced duct (151) link to each other, the air outlet level of induced duct (151) upwards sets up, and induced duct (151) are the tubaeform pipe that the air inlet is little, the air outlet is big, air-blower (15) be the frequency conversion fan.

8. A small mobile tea winnower for a continuous tea production line as claimed in claim 2, wherein: be equipped with on front wall board (101) of selection by winnowing machine case (1) controller (231) be connected with electromagnetic type swing feeder (23) electricity, frequency conversion speed regulator (152) be connected with air-blower (15) electricity, be used for sheltering from protective cover (6) of controller (231) and frequency conversion speed regulator (152), protective cover (6) be the type of falling U board.

9. A small mobile tea winnower for a continuous tea production line as claimed in claim 6, wherein: the lower wall plate (106) of the winnowing machine case (1) is provided with a second supporting leg (4) and a third supporting leg (5), the second supporting leg (4), the third supporting leg (5) and the first supporting leg (3) form a support for the winnowing machine case (1) and the feeding device (2), and the bottoms of the first supporting leg (3), the second supporting leg (4) and the third supporting leg (5) are all provided with universal wheels.

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