CN214975736U

CN214975736U - Automatic cleaning device of grain cleaning machine sifter

Info

Publication number: CN214975736U
Application number: CN202120661686.4U
Authority: CN
Inventors: 余忠; 余宇骁
Original assignee: Jingzhou Yuzhong Food Machinery Co ltd
Current assignee: Jingzhou Yuzhong Food Machinery Co ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-12-03
Anticipated expiration: 2031-03-31

Abstract

The utility model discloses an automatic cleaning device of grain cleaning machine sifter, include: the driving shaft and the driven shaft are rotatably arranged on the inner wall of the shell; two pairs of chain wheels which are respectively arranged on the driving shaft and the driven shaft; a chain engaged with the sprocket to form a loop in which the linear portion is parallel to the screen; the cleaning element is a scraper blade or a row brush and is driven by the chain to move from the higher side of the screen to the lower side when the cleaning element is abutted against the screen; and the driving device is fixed outside the shell and used for driving the driving shaft to rotate. The structure of sprocket, chain makes to clean the component and keeps the folk prescription to the motion all the time when contacting with the screen cloth, does not influence into grain, makes cleaning device can be at the in-process uninterrupted operation of whole grain cleaning machine operation, also promotes the material to remove and pave at the screen cloth surface when clearing up the screen cloth, utilizes the area of screen cloth more effectively, improves screening efficiency.

Description

Automatic cleaning device of grain cleaning machine sifter

Technical Field

The utility model relates to a grain processing field, concretely relates to automatic cleaning device of grain cleaning machine sifter.

Background

The grain cleaning machine is mainly used for cleaning grains after harvesting, most grains can be harvested by a combine harvester at present, and the harvested grains contain a large amount of grains, awns, straws and other impurities. Common grain cleaning machine includes the casing and fixes the double-deck screen cloth in the casing, the screen cloth slope sets up, casing and screen cloth constantly vibrate under vibrating device's drive, grain with impurity spills on the screen cloth surface from the higher one side of screen cloth, top layer screen cloth top surface is stayed to great impurity, grain and less impurity fall down from the sieve mesh, and little impurity falls down the discharge through the bottom sieve mesh, big impurity and grain move along top layer screen cloth and bottom screen cloth surface respectively to the low side of screen cloth and directly discharge as to different exports. The large impurities such as the longer straws and the like have poor flowability and irregular shapes, are easy to block the sieve pores of the top-layer screen mesh and obstruct the normal passage of grains and small impurities, so the top-layer screen mesh needs to be cleaned frequently. Manual cleaning is unsafe in equipment working, and only shutdown cleaning can be carried out, so that adverse influence is caused on production efficiency.

The existing cleaning device is mainly characterized in that mechanisms such as an air cylinder and the like are used for driving the brush to perform linear reciprocating motion on the screen surface, the cleaning device cannot continuously screen grains due to the problem of the running direction, and the grains cannot continuously move in the opposite direction of the outlet only by stopping feeding the grains in the process of resetting the brush.

SUMMERY OF THE UTILITY MODEL

In order to realize cleaning in real time in the operation process of the grain cleaning machine, the work efficiency of the grain cleaning machine is improved, the utility model provides an automatic cleaning device for the sieve surface of the grain cleaning machine.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an automatic cleaning device of grain cleaning machine sifter, grain cleaning machine includes the support, installs the casing on the support, is fixed with parallel and the double screen cloth of slope in the casing, and the grain hopper is installed into to the higher one side top of screen cloth, and the casing that is located the lower one side of screen cloth from top to bottom opens respectively and has big miscellaneous export, clean millet export and thin miscellaneous export, cleaning device includes:

the driving shaft and the driven shaft are rotatably arranged on the inner wall of the shell;

two pairs of chain wheels which are respectively arranged on the driving shaft and the driven shaft;

a chain engaged with the sprocket to form a loop in which the linear portion is parallel to the screen;

the cleaning element is a scraper blade or a row brush and is driven by the chain to move from the higher side of the screen to the lower side when the cleaning element is abutted against the screen;

and the driving device is fixed outside the shell and used for driving the driving shaft to rotate.

Compared with the prior art, the utility model discloses following beneficial effect has:

the structure of sprocket, chain makes to clean the component and keeps the folk prescription to the motion all the time when contacting with the screen cloth, does not influence into grain, makes cleaning device can be at the in-process uninterrupted operation of whole grain cleaning machine operation, also promotes the material to remove and pave at the screen cloth surface when clearing up the screen cloth, utilizes the area of screen cloth more effectively, improves screening efficiency.

Drawings

Fig. 1 is the utility model discloses automatic cleaning device of grain cleaning machine sifter in embodiment's structure schematic front view.

FIG. 2 is an enlarged schematic view of the chain, cleat and flight mounting relationship.

Fig. 3 is the embodiment of the utility model provides a grain cleaning machine sifter automatic cleaning device structure schematic plan view.

Fig. 4 is a schematic structural view of the chain tensioning mechanism according to the embodiment of the present invention.

Fig. 5 is a schematic view of arrangement of the sweeping shaft according to the embodiment of the present invention.

In the above drawings: 1. a housing; 2. a drive shaft; 3. a driven shaft; 4. a sprocket; 5. a chain; 6. a splint; 7. a squeegee; 8. a bolt; 9. a strip-shaped mounting hole; 10. a variable frequency motor; 11. cleaning the shaft; 12. a support; 13. a grain feeding hopper; 14. screening a screen; 15. a large impurity outlet; 16. a clean valley outlet; 17. and (5) a fine impurity outlet.

Detailed Description

As shown in fig. 1-3, the embodiment of the utility model discloses an automatic cleaning device of grain cleaning machine sifter, grain cleaning machine includes support 12, installs casing 1 on support 12, and casing 1 internal fixation has parallel and the double screen cloth 14 of slope, and grain feeding hopper 13 is installed to the higher one side top of screen cloth 14, and casing 1 that is located screen cloth 14 lower opens respectively from top to bottom has big miscellaneous export 15, clean millet export 16 and thin miscellaneous export 17, cleaning device includes:

the driving shaft 2 and the driven shaft 3 are rotatably arranged on the inner wall of the shell 1;

two pairs of chain wheels 4 are respectively arranged on the driving shaft 2 and the driven shaft 3;

a chain 5 engaged with the sprocket 4 to form a loop in which the linear portion is parallel to the screen 14;

the cleaning element is a scraper 7 or a row brush and is driven by the chain 5 to move from the higher side of the screen 14 to the lower side when the cleaning element is abutted against the screen 14;

and the driving device is fixed outside the shell 1 and is used for driving the driving shaft 2 to rotate.

Preferably, the cleaning element is detachably connected to the chain 5. The detachable connection mode is convenient for replacing and overhauling the easily damaged part.

Preferably, the chain 5 is provided with a plurality of mounting pieces at intervals, the mounting pieces are provided with mounting pieces provided with mounting holes and replace the original chain unit, mounting seats are detachably fixed on the mounting pieces by screws, and the mounting seats are provided with clamping plates 6 for clamping the cleaning elements. The preset integration of the mounting piece on the chains 5 can lead the mounting positions of the two chains 5 to correspond, and the mounting position of the cleaning element is easier to stabilize.

Preferably, a chain tensioning mechanism is arranged at the driven shaft 3. The tensioning state of the chain 5 is adjusted in time, and accidents caused by the fact that the chain 5 is separated from the chain wheel 4 are avoided.

Preferably, as shown in fig. 4, the chain tensioning mechanism includes a bearing seat formed on the housing 1 for mounting the driven shaft 3, a strip-shaped mounting hole 9 for the driven shaft 3 to pass through, and a bolt 8 fixed outside the housing 1 to abut against the bearing seat and adjust the position of the bearing seat. When the chain 5 needs to be further tightened, the mounting screws of the bearing seats are loosened firstly, then the bolts 8 are rotated, the bearing seats are pushed by the bolts 8 to move, the chain 5 is tensioned, and when the bearing seats on the two sides are well adjusted and positioned, the mounting screws of the bearing seats are screwed again.

Preferably, the edge of the scraper 7, which is attached to the screen 14, is wavy or zigzag. The wavy or zigzag edge can more easily cope with the uneven screen 14, and the wavy or zigzag edge can be attached to the screen 14 more tightly, so that the scraping effect is improved.

Preferably, the scraper 7 is made of an elastic material. The scraper 7 can be adapted to the surface trend of the screen 14 better, and the cleaning effect is improved.

Preferably, the driving device is a variable frequency motor 10. The variable frequency motor 10 can adjust the rotating speed of the chain wheel 4 according to the grain type and the state and the content of impurities.

In another embodiment, as shown in fig. 5, the cleaning device further comprises a plurality of cleaning shafts 11 rotatably connected to the housing 1 in parallel and coplanar with the driving shaft 2 and the driven shaft 3, a plurality of the row brushes are fixed to generatrices of the respective cleaning shafts 11, and the cleaning shafts 11 are fixed with sprockets 4 engaged with the chains 5. The sweeping shafts 11 are driven by the chain 5 to synchronously rotate in the same direction. Because the position of the cleaning shaft 11 does not change, a softer row brush is selected, and the distance between the cleaning shaft and the screen surface is shortened or a longer row brush is arranged to expand the cleaning range of each group of row brushes.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. The utility model provides an automatic cleaning device of grain cleaning machine sifter, grain cleaning machine includes the support, installs the casing on the support, is fixed with the double-deck screen cloth of parallel and slope in the casing, and the grain hopper is installed into to the higher one side top of screen cloth, and the casing that is located the lower one side of screen cloth from top to bottom opens respectively and has big miscellaneous export, net millet export and thin miscellaneous export, its characterized in that, cleaning device includes:

2. The automatic cleaning device for the screening surface of the grain cleaning machine as claimed in claim 1, characterized in that: the cleaning element is detachably connected with the chain.

3. The automatic cleaning device for the screening surface of the grain cleaning machine as claimed in claim 2, characterized in that: the chain is provided with a plurality of mounting pieces at intervals, the mounting pieces are provided with mounting pieces with mounting holes and replace the original chain units, mounting seats are detachably fixed on the mounting pieces through screws, and the mounting seats are provided with clamping plates for clamping cleaning elements.

4. The automatic cleaning device for the screening surface of the grain cleaning machine as claimed in claim 1, characterized in that: and a chain tensioning mechanism is arranged at the driven shaft.

5. The automatic cleaning device for the screening surface of the grain cleaning machine as claimed in claim 4, characterized in that: the chain tensioning mechanism comprises a bearing seat arranged on the shell and used for mounting the driven shaft, a strip-shaped mounting hole for the driven shaft to pass through, and a bolt fixed outside the shell and abutting against the bearing seat and adjusting the position of the bearing seat.

6. The automatic cleaning device for the screening surface of the grain cleaning machine as claimed in claim 1, characterized in that: the edge of the scraper jointed with the screen is wavy or zigzag.

7. The automatic cleaning device for the screening surface of the grain cleaning machine as claimed in claim 1, characterized in that: the scraper is made of an elastic material.

8. The automatic cleaning device for the screening surface of the grain cleaning machine as claimed in claim 1, characterized in that: the driving device is a variable frequency motor.

9. The automatic cleaning device for the screening surface of the grain cleaning machine as claimed in claim 1, characterized in that: the cleaning device is characterized by further comprising a plurality of cleaning shafts which are parallel to and coplanar with the driving shaft and the driven shaft and are rotatably connected to the shell, the row brushes are fixed at the position of a bus of each cleaning shaft, and chain wheels meshed with the chains are fixed on the cleaning shafts.