CN115301546B

CN115301546B - Multi-mode air-blowing type screening device

Info

Publication number: CN115301546B
Application number: CN202211106934.4A
Authority: CN
Inventors: 杨风波; 周宏平; 许林云; 茹煜; 陈青; 陈吉朋
Original assignee: Nanjing Forestry University
Current assignee: Nanjing Forestry University
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2023-07-14
Anticipated expiration: 2042-09-07
Also published as: CN115301546A

Abstract

The invention discloses a multi-mode air-blowing type screening device which comprises a fixed seat, wherein a plurality of air flow nozzles are rotatably arranged on the fixed seat at equal intervals; the fixed seat is also provided with two driving parts, namely a first driving part and a second driving part, which slide at equal speed and in opposite directions relative to the fixed seat; each air flow nozzle is one of two driving parts, and the air flow nozzles connected with the first driving part and the second driving part are alternately arranged at intervals; the first driving piece and the second driving piece are respectively provided with a guide groove, namely a first guide groove and a second guide groove; the air flow nozzle is provided with a guide shaft part which extends into the guide groove of the corresponding driving piece, so that the air flow nozzle connected with the driving piece can rotate when the driving piece moves. The screen cleaning device can be switched between the corresponding cleaning mode and the mutual aid cleaning mode, so that when the cleaning effect of the corresponding cleaning mode is worst, the screen cleaning device can be switched to the mutual aid cleaning mode, the air flow of screen holes is doubled, and the screen cleaning rate is greatly improved.

Description

Multi-mode air-blowing type screening device

Technical Field

The invention relates to the technical field of agricultural machinery, in particular to a multi-mode air-blowing type screening device.

Background

In agriculture, when materials are cleaned, a cleaning sieve is needed. In actual use, the sieve mesh of cleaning sieve is easy to block, has among the prior art to the technical scheme that the sieve mesh was cleared up through the air current blowing, as shown in patent CN211756849U, however, the air current blowout hole in prior art is fixed to be set up, and it can only jet to single position, if the air current that the air supply provided is less be difficult to satisfy the cleaning effect, need change the higher air supply of atmospheric pressure, it is visible that this kind of air current cleaning mechanism's adaptability is relatively poor.

Disclosure of Invention

The invention aims to: in order to overcome the defects in the prior art, the invention provides a multi-mode air-blowing type cleaning device which can change the cleaning mode to improve the cleaning effect when the cleaning effect is poor.

The technical scheme is as follows: in order to achieve the above purpose, the multi-mode air-blowing type screening device comprises a fixed seat, wherein a plurality of air flow nozzles are equidistantly arranged on the fixed seat; all the air flow nozzles are rotatably installed relative to the fixed seat;

the fixed seat is also provided with two driving parts, namely a first driving part and a second driving part, and the two driving parts slide at equal speed and opposite directions relative to the fixed seat;

each air flow nozzle is connected with one of the two driving parts, and the air flow nozzles connected with the first driving part and the second driving part are alternately arranged at intervals;

the first driving piece and the second driving piece are respectively provided with a guide groove, namely a first guide groove and a second guide groove;

the air flow nozzle is provided with a guide shaft part, and the guide shaft part extends into the guide groove of the corresponding driving piece, so that the air flow nozzle connected with the driving piece can rotate when the driving piece moves.

Further, the first guide groove comprises a first straight groove section and a first chute section which are connected with each other;

the second guide groove comprises a second straight groove section and a second chute section.

Further, both the first driving piece and the second driving piece are driven to run by a driving mechanism; the driving mechanism comprises two racks which are arranged in one-to-one correspondence with the two driving pieces, and the two racks are parallel to each other and are oppositely arranged;

the driving mechanism further comprises a gear, and the gear is arranged between the two racks and meshed with the two racks;

the driving mechanism further comprises a motor for driving the gear to rotate.

Further, the rack is respectively installed on two sides of each of the first driving piece and the second driving piece; the number of the gears is two, and the gears are connected through a synchronizing shaft.

Further, the fixing base is provided with sliding grooves corresponding to the two sides of the first driving piece and the two sides of the second driving piece, and the side parts of the two driving pieces are respectively installed in a sliding manner relative to the sliding grooves at the corresponding positions.

The beneficial effects are that: according to the multi-mode air-blowing type cleaning device, the first driving piece and the second driving piece which always move in the same speed and in the opposite directions are arranged, so that the cleaning device can be switched between the corresponding cleaning mode and the mutual-aid cleaning mode, when the cleaning effect of the corresponding cleaning mode is worst, the cleaning device can be switched to the mutual-aid cleaning mode, the mutual-aid cleaning mode is realized, the air flow of each sieve hole is doubled, and the cleaning rate is greatly improved.

Drawings

FIG. 1 is a perspective view of an air-blown screen apparatus in a corresponding cleaning mode;

FIG. 2 is a block diagram of a hidden line display of the air-blown screen apparatus in a corresponding cleaning mode;

FIG. 3 is an enlarged view of the portion A of FIG. 1;

FIG. 4 is a cross-sectional view B-B in FIG. 2;

FIG. 5 is a front view block diagram of a first state of the air-blown screen apparatus in a mutual aid cleaning mode;

FIG. 6 is a rear view of a first state of the air-blown screen apparatus in a mutual aid cleaning mode;

FIG. 7 is a front view block diagram of a second state of the air-blown screen apparatus in a mutual aid cleaning mode;

fig. 8 is a rear view of a structure of a second state of the air-blown screen apparatus in a mutual aid cleaning mode.

In the figure: 1-a fixed seat; 11-a chute; 2-air flow nozzle; 21-a guide shaft portion; 3-a first driving member; 31-a first guide groove; 311-a first straight slot section; 312-a first chute section; 4-a second driving member; 41-a second guide groove; 411-a second straight trough section; 412-a second chute section; 5-a driving mechanism; 51-rack; 52-gear; 53-motor; 54-synchronization axis.

Description of the embodiments

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

The multi-mode air-blowing type screening device shown in fig. 1-2 comprises a fixed seat 1, wherein a plurality of air flow nozzles 2 are equidistantly arranged on the fixed seat 1; all the air flow nozzles 2 are rotatably installed relative to the fixed seat 1; the fixed seat 1 is also provided with two driving pieces, namely a first driving piece 3 and a second driving piece 4, which slide in a constant-speed and reverse direction relative to the fixed seat 1; each air flow nozzle 2 is connected with one of the two driving pieces, and the air flow nozzles 2 connected with the first driving piece 3 and the second driving piece 4 are arranged at intervals in a staggered way; the first driving member 3 and the second driving member 4 are respectively provided with a first guiding groove 31 and a second guiding groove 41; as shown in fig. 3, the air flow nozzle 2 is provided with a guiding shaft portion 21, and the guiding shaft portion 21 extends into the guiding groove of the corresponding driving member, so that the air flow nozzle 2 connected with the driving member can rotate when the driving member moves. The first driving member 3 and the second driving member 4 are both plate-shaped structures.

In particular, the first guiding groove 31 comprises a first straight groove section 311 and a first chute section 312 connected to each other; the second guiding groove 41 comprises a second straight groove section 411 and a second chute section 412. The first guide groove 31 and the second guide groove 41 have the same shape and the same layout, and the layout is the same as that of the first guide groove: if the first straight slot section 311 and the first chute section 312 are arranged vertically, the second straight slot section 411 and the second chute section 412 are also arranged vertically. The first chute section 312 is inclined in the opposite direction to the second chute section 412.

Further, both the first driver 3 and the second driver 4 are driven to operate by a driving mechanism 5; as shown in fig. 4, the driving mechanism 5 includes two racks 51 mounted in one-to-one correspondence with the two driving members, and the two racks 51 are disposed parallel to each other and opposite to each other; the driving mechanism 5 further includes a gear 52, the gear 52 being interposed between the two racks 51 and engaged with both the racks 51; the driving mechanism 5 further includes a motor 53 that drives the gear 52 to rotate.

Based on the structure, the working mode of the screening device can be switched between two modes, wherein the two modes are respectively a corresponding cleaning mode and a mutual aid cleaning mode.

In the corresponding cleaning mode, as shown in fig. 1-2, all the air flow nozzles 2 are parallel to each other, the air flow nozzles 2 are in one-to-one correspondence with a row of holes on the screen, each air flow nozzle 2 only cleans the corresponding hole, and at this time, the guiding shaft 21 on each air flow nozzle 2 is placed at the transition position of the guiding slot on the driving member connected with the guiding shaft, that is, the transition position between the first straight slot section 311 and the first chute section 312 in the first guiding slot 31, or the transition position between the second straight slot section 411 and the second chute section 412 in the second guiding slot 41.

In the corresponding cleaning mode, the two driving members can move in the same speed and in opposite directions by controlling the motor 53 to operate, and as the two driving members move in the same speed and in opposite directions, the guide shaft part 21 of the air flow nozzle 2 connected with the first driving member 3 and the guide shaft part 21 of the air flow nozzle 2 connected with the second driving member 4 respectively enter the chute section and the straight groove section of the corresponding driving member, the air flow nozzle 2 where the guide shaft part 21 entering the chute section is positioned rotates relative to the fixed seat 1, and the air flow nozzle 2 where the guide shaft part 21 entering the straight groove section is positioned is kept motionless relative to the fixed seat 1.

The specific process is as follows: the air flow nozzle 2 corresponding to the first driving piece 3 is called a first nozzle, and the air flow nozzle 2 corresponding to the second driving piece 4 is called a second nozzle; in the cleaning mode, the motor 33 is driven to rotate forward, the driving mechanism 5 drives the two driving members to move in the same speed and in the opposite direction, the guide shaft part 21 on the first nozzle enters the first chute section 312 to enable the first nozzle to rotate, the guide shaft part 21 on the second nozzle enters the second straight chute section 411, and the second nozzle is not moved, as shown in fig. 5-6, at the moment, each first nozzle inclines towards the adjacent second nozzle to assist the second nozzle to clean the corresponding sieve holes; then, the driving motor 33 rotates reversely after stopping rotating for a period of time, the driving mechanism 5 drives the two driving parts to move reversely at the same speed, the guide shaft parts 21 on the first nozzle and the second nozzle respectively return to the transition positions of the corresponding guide grooves, then, as the driving mechanism 5 continues to operate, the guide shaft parts 21 on the first nozzle enter the first straight groove section 311, the first nozzle is not moved, the guide shaft parts 21 on the second nozzle enter the second chute section 412, so that the second nozzle rotates relative to the fixed seat 1, as shown in fig. 7-8, each second nozzle inclines towards the adjacent first nozzle, and the first nozzle is assisted to clean the corresponding sieve holes.

Further, the rack 51 is respectively mounted to both sides of each of the first driving piece 3 and the second driving piece 4; the number of the gears 52 is two, and the gears are connected through a synchronizing shaft 54. The fixed seat 1 is provided with sliding grooves 11 corresponding to the two sides of the first driving piece 3 and the two sides of the second driving piece 4, and the side parts of the two driving pieces are respectively and slidably installed relative to the sliding grooves 11 at the corresponding positions.

By the structure, the first driving piece 3 and the second driving piece 4 can move stably in the fixed seat 1.

The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.

Claims

1. The multi-mode air-blowing type screening device comprises a fixed seat (1), wherein a plurality of air flow nozzles (2) are equidistantly arranged on the fixed seat (1); all the air flow nozzles (2) are rotatably installed relative to the fixed seat (1); the method is characterized in that:

the fixed seat (1) is also provided with two driving pieces, namely a first driving piece (3) and a second driving piece (4), which slide at equal speed and opposite directions relative to the fixed seat (1);

each air flow nozzle (2) is connected with one of the two driving pieces, and the air flow nozzles (2) connected with the first driving piece (3) and the second driving piece (4) are arranged at intervals in a staggered way;

guide grooves, namely a first guide groove (31) and a second guide groove (41), are formed in the first driving piece (3) and the second driving piece (4);

the air flow nozzle (2) is provided with a guide shaft part (21), and the guide shaft part (21) stretches into the corresponding guide groove of the driving piece, so that the air flow nozzle (2) connected with the driving piece can rotate when the driving piece moves;

both the first driving piece (3) and the second driving piece (4) are driven to run by a driving mechanism (5); the driving mechanism (5) comprises two racks (51) which are arranged in one-to-one correspondence with the two driving pieces, and the two racks (51) are parallel to each other and are arranged oppositely;

the driving mechanism (5) further comprises a gear (52), wherein the gear (52) is arranged between the two racks (51) and is meshed with both racks (51);

the driving mechanism (5) further comprises a motor (53) for driving the gear (52) to rotate.

2. The multi-mode air-blown screen apparatus of claim 1, wherein the first guide slot (31) comprises a first straight slot section (311) and a first chute section (312) connected to each other;

the second guiding groove (41) comprises a second straight groove section (411) and a second chute section (412).

3. The multi-mode air-blown screen apparatus according to claim 1, wherein the rack (51) is mounted on both sides of each of the first drive (3) and the second drive (4), respectively; the number of the gears (52) is two, and the gears are connected through a synchronous shaft (54).

4. A multi-mode air-blown screen apparatus according to claim 3, wherein the fixing base (1) is provided with sliding grooves (11) at positions corresponding to both sides of the first driving member (3) and both sides of the second driving member (4), and both sides of the driving members are slidably mounted with respect to the sliding grooves (11) at the corresponding positions.