CN110586480B

CN110586480B - Compact structure concentrator

Info

Publication number: CN110586480B
Application number: CN201910898416.2A
Authority: CN
Inventors: 晋学洪; 梁旭松; 王旭平
Original assignee: LESHAN DONGCHUAN MACHINERY CO LTD
Current assignee: LESHAN DONGCHUAN MACHINERY CO LTD
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2025-01-14
Anticipated expiration: 2039-09-23
Also published as: CN110586480A

Abstract

The present invention provides a compact concentrator with a more compact structure and lower manufacturing cost, and relates to grain sorting equipment. The compact concentrator comprises a frame and a hopper, a vibrating screen, a vibrating device and a specific gravity fan mounted on the frame. The vibrating device is connected to the vibrating screen to drive the vibrating screen to vibrate. The vibrating screen comprises a screen box, and the screen box is provided with a large impurity screen plate, a material flow structure, a small impurity screen plate and a specific gravity concentrator from top to bottom. The concentrator of the present invention has a lower manufacturing cost and is more convenient in terms of placement and transportation.

Description

Compact structure type fine separator

Technical Field

The invention relates to grain sorting equipment, in particular to a compact-structure fine separator.

Background

With the development of modern agriculture and rural land circulation, agricultural mechanization is becoming more and more common, and grain cleaning equipment becomes one of the necessary equipment for every farmer. Because China mainly uses small farmers' economy as a main material, farmers pay great attention to convenience in placement and transportation of screening equipment when purchasing grain cleaning equipment. The grain cleaning equipment in the current market is not reasonable in structure, occupies a large area, and is inconvenient to place and transport.

Patent CN205887412U discloses a compact structure's sieve separator, this screening includes frame, pan feeding hopper, first screen frame, selection by winnowing dust collector, second screen frame, proportion fine separation platform, proportion platform fan and vibrating device etc.. The screening machine mainly comprises a first screen body and a second screen body, wherein the first screen body and the second screen body are arranged above a gravity concentration table, a screen box does not exceed two sides of the gravity concentration table, and the whole machine is compact in structure and reduces occupied area on the premise of guaranteeing the screening process of the screen box. Because the winnowing dust collector of this sieve separator sets up in first screen frame top, the winnowing dust collector of this sieve separator needs to set up alone promptly, and this will occupy certain space certainly, therefore this sieve separator structure is also compact inadequately, and manufacturing cost is also higher.

Disclosure of Invention

The technical problem to be solved by the invention is to provide the compact type fine separator with more compact structure and lower manufacturing cost.

The invention solves the technical problems by adopting the technical scheme that the structure compact type fine separator comprises a frame, a hopper, a vibrating screen, a vibrating device and a specific gravity fan, wherein the hopper, the vibrating screen, the vibrating device and the specific gravity fan are arranged on the frame;

The high end of the gravity screening channel is communicated with the stone outlet, the lower end of the gravity screening channel is communicated with the second grain outlet, one end of the light impurity winnowing channel is communicated with the gravity screening channel through an air guide structure, and the other end of the light impurity winnowing channel is communicated with the light impurity outlet;

the specific gravity fan is arranged below the specific gravity fine separation table.

Further, the small impurity sieve plate is obliquely arranged, the oblique direction is the same as the oblique direction of the specific gravity selecting table, and the lower end of the light impurity winnowing channel is communicated with the specific gravity screening channel.

Further, the material dripping structure comprises a main material dripping plate and an auxiliary material dripping plate which are respectively arranged at two ends of the large impurity sieve plate, and the main material dripping plate and the auxiliary material dripping plate are arranged in a splayed shape, so that a first cereal outlet with the extending direction perpendicular to the extending direction of the light impurity winnowing channel is formed.

Further, the grain outlet end of the main material flowing plate is lower than the grain outlet end of the auxiliary material flowing plate and extends outwards.

Further, the gravity screening channel is provided with a top plate, one end of the top plate is connected with the grain outlet end of the main material flowing plate, the top plate is obliquely arranged towards the air inlet of the light impurity winnowing channel, and the air guide structure comprises the top plate.

Further, the wind guiding structure further comprises a plurality of wind guiding plates which are arranged in the gravity screening channel and are inclined towards the wind inlet of the light impurity winnowing channel, the wind guiding surfaces of the wind guiding plates are concave cambered surfaces, and the wind guiding plates are arranged at intervals along the extending direction of the light impurity winnowing channel.

Further, the cross-sectional area of the impurity outlet end of the light impurity air channel gradually decreases from inside to outside.

Further, the small impurity sieve plate is a fish scale hole sieve plate, and the fish scale holes of the small impurity sieve plate are arranged towards the light impurity outlet.

Further, the stone outlet is also provided with a stone outlet adjusting baffle plate for adjusting the opening of the outlet.

Further, the vibrating screen further comprises a sliding screen connected to the second cereal outlet, and magnets are embedded on the sliding screen.

The invention has the beneficial effects that the large impurity sieve plate, the material flowing structure, the small impurity sieve plate and the specific gravity fine screening table of the fine screening machine are sequentially arranged in the sieve box from top to bottom, the light impurity winnowing channel formed in the space above the small impurity sieve plate is communicated with the specific gravity screening channel formed in the space above the specific gravity fine screening table, and the air flow generated by the specific gravity fan is reused through the air guide structure, so that a winnowing dust removing device is not required to be independently arranged, the manufacturing cost of the fine screening machine is lower, the structure is more compact, and the fine screening machine is more convenient to place and transport in all aspects.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic view of the vibrating screen structure of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged schematic view of FIG. 2 at B;

the drawing shows a frame 1, a hopper 2, a vibrating screen 3, a vibrating device 4, a gravity fan 5, a light impurity winnowing channel extending direction 6, a screen box 31, a light impurity winnowing channel 33, a gravity screening channel 34, a second grain outlet 35, a stone outlet 36, a light impurity outlet 37, a first grain outlet 38, an air deflector 39, a large impurity outlet 40, an air homogenizing plate 51, a stone outlet adjusting baffle 361, a large impurity screen plate 311, a small impurity screen plate 312, a gravity refining table 313, a main material dripping plate 321, a secondary material dripping plate 322, a top plate 341, a slide screen 314, a magnet 315, a light impurity air channel impurity outlet end 331, a light impurity winnowing channel air inlet 332 and a fish scale hole 3121.

Detailed Description

The invention will be further described with reference to the drawings and examples.

As shown in fig. 1 and 2, the compact type screening machine of the present invention is the same as the existing screening machine, and comprises a frame 1, a hopper 2 mounted on the frame 1, a vibrating screen 3, a vibrating device 4 and a specific gravity fan 5, wherein the vibrating device 4 comprises a motor and a cam link mechanism, and the motor is connected with the vibrating screen 3 through the cam link mechanism so as to drive the vibrating screen 3 to vibrate. In order to make the structure of the fine separator more compact, the vibrating screen 3 of the fine separator comprises a screen box 31, wherein a large impurity screen plate 311, a dripping structure, a small impurity screen plate 312 and a specific gravity fine separation table 313 which are sequentially connected are arranged in the screen box 31 from top to bottom. The large impurity sieve plate 311, the material dripping structure, the small impurity sieve plate 312 and the gravity separation table 313 can be arranged in the sieve box 31 by adopting welding, bolting and the like. The function of the material dripping structure is to gather the grains falling from the large impurity sieve plate 311 so as to enter the light impurity winnowing channel 33 for winnowing. The large impurity sieve plate 311 is arranged below the hopper 2, the small impurity sieve plate 312 and the upper cavity formed by the wall plates of the sieve box 31 are enclosed to form a light impurity winnowing channel 33, the specific gravity fine separation table 313 is obliquely arranged (compared with the horizontal plane), the specific gravity fine separation table 313 and the upper cavity formed by the wall plates of the sieve box 31 are enclosed to form a specific gravity screening channel 34, the higher end of the specific gravity screening channel 34 is communicated with a stone outlet 36 arranged on the sieve box 31, the lower end of the specific gravity screening channel is communicated with a second grain outlet 35 arranged on the sieve box 31, one end of the light impurity winnowing channel 33 is communicated with the specific gravity screening channel 34 through an air guide structure, and the other end of the light impurity screening channel 33 is communicated with a light impurity outlet 37 arranged on the sieve box 31. The gravity fan 5 is disposed below the gravity separation stage 313.

The mesh size of the gravity separation bed 313 is smaller than the grain size, and the mesh sizes of the large impurity sieve plate 311 and the small impurity sieve plate 312 are larger than the grain size. The gravity separation table 313 and the large impurity sieve plate 311 can be conventional common sieve plates, and the conventional scale hole sieve plates are adopted in the drawing. According to the type of the specific gravity fan 5, a serrated air homogenizing plate 51 is further arranged in the specific gravity fan 5 so as to ensure that wind uniformly blows to the specific gravity fine separation stage 313. The air guiding structure may be a duct.

Wherein the small impurity sieve plate 312 can be horizontally arranged, the fine separator of the invention preferably has the small impurity sieve plate 312 obliquely arranged, so that the light impurity winnowing channel 33 is also obliquely arranged, and the lower end of the light impurity winnowing channel 33 is communicated with the specific gravity screening channel 34. Thus, the grains can be partially passed through the meshes of the small impurity sieve plate 312 and enter the specific gravity screening passage 34, and the grains can be partially passed through the specific gravity screening passage 34 from the lower end of the small impurity sieve plate 312 (light impurity winnowing passage 33), so that the screening efficiency of the grains is high. The small impurity sieve plate 312 has the same inclination direction (inclination angle may be different) as the gravity separation stage 313, so that the impurities are conveniently sent out.

When the grain sorting machine is used, grains enter the large impurity sieve plate 311 of the vibrating screen 3 from the hopper 2, impurities with the volume larger than that of the grains are sieved by the large impurity sieve plate 311, the large impurities are remained on the large impurity sieve plate 311 and discharged from the large impurity outlet 40, the grains are gathered through a material dripping structure after passing through sieve holes of the large impurity sieve plate 311 and fall into the light impurity winnowing channel 33, and then enter the specific gravity screening channel 34 through the small impurity sieve plate 312. In the process, the air flow generated by the gravity fan 5 passes through the sieve holes of the gravity separation table 313 to blow up grains on the gravity separation table 313, the grains flow out of the second grain outlet 35 under the action of gravity, the impurity stones with heavy gravity are discharged from the stone outlet 36 under the vibration action of the gravity separation table 313, a part of the air flow passing through the gravity separation table 313 is guided by the air guide structure and then enters the light impurity winnowing channel 33 and flows out of the light impurity outlet 37 along the light impurity winnowing channel 33, so that the grains entering the light impurity winnowing channel 33 are winnowed by the part of the air flow to separate light impurities mixed in the grains, and therefore, the concentrator does not need to be provided with a winnowing dust removing device and an auxiliary structure independently, has lower manufacturing cost and more compact structure, is more convenient in all aspects of placement and transportation, and is particularly suitable for individual farmers in China. The materials are screened for three times in the whole process, and the screening effect of the classificator is good.

As shown in fig. 2, the material dripping structure comprises a main material dripping plate 321 and an auxiliary material dripping plate 322 which are respectively arranged at two ends of the large impurity sieve plate 311, wherein the main material dripping plate 321 and the auxiliary material dripping plate 322 can be welded on the wall of the sieve box 31, and the main material dripping plate 321 and the auxiliary material dripping plate 322 are arranged in a splayed shape, so that a first cereal outlet 38 with the extending direction perpendicular to the extending direction 6 of the light impurity winnowing channel is formed. The light impurity winnowing passage extending direction 6 means from the end where the light impurity winnowing passage 33 communicates with the specific gravity screening passage 34 to the end where the light impurity winnowing passage 33 communicates with the light impurity outlet 37. The extending direction of the first grain outlet 38 is perpendicular to the extending direction 6 of the light impurity winnowing channel, so that grains can form a maximum valley curtain on the windward side in the process of entering the light impurity winnowing channel 33 from the first grain outlet 38 by gathering the grain through the material flowing structure, thereby being beneficial to separating light impurities in the grains by airflow.

The grain outlet end of the main material flowing plate 321 and the grain outlet end of the auxiliary material flowing plate 322 can be arranged in a flush manner, and in fig. 2, the grain outlet end of the main material flowing plate 321 is lower than the grain outlet end of the auxiliary material flowing plate 322 and extends outwards, so that the first grain outlet 38 discharges along the airflow direction in the light impurity winnowing channel. Thus, the light impurities are conveniently and rapidly separated from the grains containing impurities under the action of gravity and wind force, the winnowing efficiency is improved, the first grain outlet 38 is prevented from being blocked, the light impurities are more conveniently discharged from the light impurity outlet 37 along with the air flow, and the air flow is prevented from forming turbulence in the light impurity winnowing channel 33, so that the winnowing effect is influenced.

As shown in fig. 2, the gravity screening channel 34 has a top plate 341 with one end connected to the grain outlet end of the main material flowing plate 321, the top plate 34 is inclined toward the light impurity winnowing channel air inlet 332, and the top plate 341 forms an air guiding structure, so that air can be guided by the lower end surface of the top plate 341. Wherein the top plate 341 may be welded to the walls of the screen box 31.

If the wind is guided only by the top plate 341, the wind flow mainly concentrates on the upper end of the wind separation duct 33, and thus there is a problem that light impurities are not easily separated. In fig. 2, a plurality of air deflectors 39 inclined toward the air inlet 332 of the light impurity winnowing channel are further disposed in the gravity screening channel 34, the air guiding surface of the air deflector 39 is a concave arc surface, and the air deflectors 39 are disposed at intervals along the extending direction of the light impurity winnowing channel 33. The wind guide surface of the wind guide plate 39 is a concave cambered surface, so that wind energy loss in the wind guide process can be reduced. The aviation baffle 39 is the polylith and along light miscellaneous selection by winnowing passageway extending direction 6 interval setting, like this when increasing the selection by winnowing amount of wind, still accessible aviation baffle and roof can be with the layering import of wind flow in light miscellaneous selection by winnowing passageway 33, like this the wind flow in the selection by winnowing passageway 33 even, the carefully chosen effect of selection machine is better.

As shown in fig. 3, the light impurity air separation channel 33 is connected with the light impurity outlet 37 at one end thereof, and the cross-sectional area of the light impurity air separation channel outlet 331 is gradually reduced from inside to outside. The wind power of the light impurity winnowing channel 33 is larger when the light impurity outlet 37 is closer, so that short stalks, small weeds and other heavier impurities which are not screened by the big impurity screen plate 311 in the vibration process of the small impurity screen plate 312 are pushed to the light impurity outlet 37 under the synergistic effect of the airflow and the small impurity screen plate 312, and the wind power of the light impurity outlet is larger when the light impurity outlet is closer, so that the impurities can be separated and blown out, and the winnowing effect of the winnowing machine is better. In order to conveniently discharge the impurities such as heavy stones screened on the gravity screening table, the cross section area of the end of the gravity screening table connected with the stone outlet is gradually reduced from inside to outside. Here, referring to fig. 4, the small impurity sieve plate 312 is a fish scale hole sieve plate, and the fish scale holes 3121 thereof are disposed toward the light impurity outlet 37. Compared with a common sieve plate, the scale hole sieve plate has better vibration sorting effect and can guide the wind flow direction.

A stone outlet adjustment baffle 361 for adjusting the opening of the outlet is also arranged at the stone outlet 36. Specifically, the stone outlet adjustment baffle 361 is bolted to the screen box 31, and the bolt holes of the stone outlet adjustment baffle 361 are stripe holes. When the grain type, the wind flow amount, etc. are changed, the outlet opening size of the outlet 36 is adjusted by the outlet adjustment baffle 361 to prevent the air flow from blowing out the grain from the outlet 36.

As shown in fig. 3, the vibrating screen 3 further includes a sliding screen 314 received at the second grain outlet 35, wherein the screen opening of the sliding screen 314 is smaller than the grain size, and the sliding screen can separate out a part of impurities in the grains, which have a smaller volume than the grains but a specific gravity equivalent to the grains. The slide screen 314 is embedded with a magnet 315 to separate out iron impurities from the grains.

Claims

1. A compact concentrator, comprising a frame (1) and a hopper (2) mounted on the frame (1), a vibrating screen (3), a vibrating device (4) and a specific gravity fan (5), wherein the vibrating device (4) is connected to the vibrating screen (3) to drive the vibrating screen (3) to vibrate, and characterized in that: the vibrating screen (3) comprises a screen box (31), wherein the screen box (31) is provided with a large miscellaneous screen plate (311), a material flow structure, a small miscellaneous screen plate (312) and a specific gravity concentrator (313) in sequence from top to bottom;

The large impurity sieve plate (311) is arranged below the hopper (2); the cavity above the small impurity sieve plate (312) forms a light impurity air selection channel (33); the specific gravity selection platform (313) is arranged obliquely; the cavity above the specific gravity selection platform (313) forms a specific gravity screening channel (34); the higher end of the specific gravity screening channel (34) is connected to the stone outlet (36), and the lower end is connected to the second grain outlet (35); one end of the light impurity air selection channel (33) is connected to the specific gravity screening channel (34) through an air guide structure, and the other end is connected to the light impurity outlet (37);

The specific gravity fan (5) is arranged below the specific gravity selection table (313);

The small impurity screening plate (312) is tilted and its tilting direction is the same as that of the specific gravity screening platform (313); the lower end of the light impurity air selection channel (33) is connected to the specific gravity screening channel (34);

The material flow structure comprises a main material flow plate (321) and an auxiliary material flow plate (322) respectively arranged at two ends of the large impurity screen plate (311), wherein the main material flow plate (321) and the auxiliary material flow plate (322) are arranged in an eight-shaped shape, thereby forming a first grain outlet (38) extending in a direction perpendicular to the extension direction (6) of the light impurity air selection channel;

The grain outlet end of the main flow plate (321) is lower than the grain outlet end of the auxiliary flow plate (322) and extends outwards;

The specific gravity screening channel (34) has a top plate (341) whose one end is connected to the grain outlet end of the main flow plate (321), the top plate (341) is inclined toward the air inlet (332) of the light impurity air selection channel, and the air guide structure includes the top plate (341);

The air guide structure further comprises a plurality of air guide plates (39) arranged in the specific gravity screening channel (34) and inclined toward the air inlet (332) of the light impurity air selection channel, the air guide surface of the air guide plates (39) being an inner concave arc surface, and the air guide plates (39) being arranged at intervals along the extension direction (6) of the light impurity air selection channel;

The stone outlet (36) is also provided with a stone outlet adjustment baffle (361) for adjusting the outlet opening.

2. The compact concentrator as described in claim 1 is characterized in that the cross-sectional area of the light impurity air separation channel outlet end (331) gradually decreases from the inside to the outside.

3. The compact concentrator as described in claim 2 is characterized in that the small impurity sieve plate (312) is a fish scale hole sieve plate, and its fish scale holes (3121) are arranged toward the light impurity outlet (37).

4. The compact concentrator according to claim 1 is characterized in that: the vibrating screen (3) further comprises a sifter (314) connected to the second grain outlet (35), and the sifter (314) is inlaid with a magnet (315).