CN2407849Y

CN2407849Y - Grain combined cleaning screen

Info

Publication number: CN2407849Y
Application number: CN 00219227
Authority: CN
Inventors: 傅正兵; 张心全
Original assignee: Liuan City Yongcheng Grain & Oil Machinery Works
Current assignee: Liuan City Yongcheng Grain & Oil Machinery Works
Priority date: 2000-01-20
Filing date: 2000-01-20
Publication date: 2000-11-29
Anticipated expiration: 2010-01-20

Abstract

The utility model discloses a grain combined cleaning screen, which comprises a machine frame, a screen ship, a first layer of a large impurity removing screen, a second layer of a fine impurity removing screen, a large impurity discharge port, a fine impurity discharge port, and a cleaned grain discharge port. The utility model has the technical proposal that the screen face inclination of the first layer of large impurity removing screen is 8 DEG; the screen face inclination of the second layer of a fine impurity removing screen is 13 DEG; the bottom of the screen ship has a vibrating motor. The utility model obviously increases the impurity removing rate and the treatment capacity, reduces the production cost, and increases the product reliability.

Description

The grain combined cleaning sift

The utility model relates to a kind of Cereals Processing Machines, the combined cleaning sift of cleaning removal of impurities when more specifically saying so grain purchases.

At present, domestic existing cleaning commonly used sieve (compass screen surface is wide 900 millimeters), by feed hopper, windmill and material dirt separation chamber, one or two layers of sieve, sieve ship lower bearing bracket and eccentric drive mechanism are formed, and the important technological parameters and the vibration source of this sieve are:

1, treating capacity (paddy) is 2700 kilograms/hour,

2, vibration frequency: 1400 times/minute

3, amplitude: 5 millimeters

4, screen angle: one or two layers of sieve are 14 °,

5, dust removal rate: 50～60%

6, put the shrivelled kernel grain content: 60～85%

7, power and power consumption: 15KW～0.55 degree/ton

8, vibration source source: mechanical transmissioning piece transmission

The source of the technical parameter of above-mentioned existing cleaning sieve, processing performance, vibration source and the demonstration after use show; Vibration source must be finished by the transmission of driving members such as motor-belt pulley-V-belt-belt pulley-main shaft assembly and weighting block, so its drive disk assembly complexity, noise is big, and consumable accessory is many, and assembling repair is loaded down with trivial details, and throughput per hour is less than normal, and power consumption is higher; The cleaning dust removal rate is low, the separation ash discharge is mixed and is reached grain content height in the shrivelled kernel, when selling grain, the peasant often chooses 200 jin, take back 20 jin, two layers of screen angle are identical, the fixedly flow process of compound sieve and long-pending can not the giving full play to of compass screen surfaces that cause two layers of sieve upper semisection, thereby also caused dust removal rate not high, cause the grain quality of government purchase poor, the paddy grade is low.

The purpose of this utility model provides a kind of novel grain combined cleaning sift, has reduced the amplitude of sieve ship, has improved impurities removing efficiency, greatly reduces the shrivelled kernel grain content.

The purpose of this utility model is achieved by the following technical solution.

A kind of grain combined cleaning sift, comprise that sieve ship, one deck remove big assorted sieve, two layers are removed thin assorted sieve, lower bearing bracket, assorted greatly discharging opening, carefully assorted discharging opening, clean paddy discharging opening, it is characterized in that it is 6～11 ° that described one deck removes the big assorted screen angle that sieves, two layers of screen angle that removes thin assorted sieve are 10～15 °, sieve boat bottom vibrating motor is installed.

The screen angle that one deck removes big assorted sieve is 7～9 °, and two layers of screen angle that removes thin assorted sieve are 11～13 °, and vibrating motor is installed in the central authorities of sieve boat bottom, and vibrating motor rotating shaft two ends are equipped with eccentric block.

The screen angle that one deck removes big assorted sieve is 8 °, and two layers of screen angle that removes thin assorted sieve are 13 °.

Important technological parameters of the present utility model is

1, treating capacity (paddy) is 3000 kilograms/hour,

2, vibration frequency: 1390 times/minute

3, amplitude:＜2 millimeters

4, screen angle: one deck removes big assorted sieve 8 degree, and two layers are removed thin assorted sieve 13 degree.

5, dust removal rate: 83.1%

6, shrivelled kernel grain content:＜10%

7, power and power consumption: 1.3KW～0.43 degree/ton

8, vibration source source: standalone vibrating motor

Compare with prior art, the utility model has outstanding advantage.

1, cleaning sieve of the present utility model is to adopt the standalone vibrating motor as the source vibration source, vibration frequency is 1390 times/minute, vibrating motor is identical by two offset distances, the exciting source that inclined to one side piece that weight is identical and drive motors are integrated, vibration frequency height not only, compass screen surface is done the vibration of circle track in vertical plane, make material be difficult for producing automatic classification, and particle also is difficult for stopping up sieve aperture, particularly two identical shaped inclined to one side piece physical dimensions of the new configuration in vibrating motor both sides are reasonable in design, thereby the amplitude of sieve nest is little, and material and compass screen surface touch opportunity are many, and cleaning effect is good.

2, the screen angle design of the present utility model also inclination angle with existing cleaning sieve is completely different, this sieve is according to the rotating speed of sieve nest, amplitude and screen angle three combine closely, it is again the principle of the relation of mutual restriction and definite screen angle and design definite, that is: one deck is 8 degree except that big assorted sieve, two layers are removed thin assorted sieve is 13 degree, on same sieve ship, sifting scheme and technological requirement according to " compound sieve ", design two kinds of different screen angles, help one deck except that mixing sieve and screenings greatly as early as possible, the epimere of wandering two layers of compass screen surface as early as possible, two layers of actual compass screen surface that removes thin assorted sieve are long-pending, utilization rate improves 35%, improves cleaning efficiency.

3, owing to cancelled mechanical transmissioning piece, reduce the amplitude of vibration source, reduced the running noise of equipment, thereby improved the stationarity that the sieve shipping is changeed greatly.Reduced the exciting of sieve ship, fundamentally solved existing cleaning sieve sieve ship easy fracture, drawback such as screen cloth is fragile, and the driving member rapid wear is many has improved utilization rate of equipment and installations.

4, cleaning effect obviously improves.

Fig. 1 is the utility model structural representation.

Fig. 2 is the utility model sieve ship structural representation.

Below in conjunction with accompanying drawing,, the utility model is further described by embodiment.

Embodiment:

Referring to Fig. 1, Fig. 2.The utility model is equipped with elevator 1, spiral material-homogenating device 2, windmill 3, being equipped with on the lower bearing bracket 6 has one deck to remove big assorted sieve 9 in sieve ship 8, the sieve ship 8, the screen angle that one deck removes big assorted sieve 9 is 8 °, and two layers of screen angle that removes thin assorted sieve 10 are 13 °, one deck drops down plate 11 except that the assorted greatly discharging in the lower end of big assorted sieve 9, the top that plate 11 is dropped down in big assorted discharging is that 12, two layers of front end except that thin assorted sieve of assorted greatly discharging opening have the thin discharging opening 13 of mixing, and there is clean paddy discharging opening 14 sieve ship lower end.Sieve ship 8 bottom center have vibrating motor 7, and the rotating shaft two ends of vibrating motor 7 all are equipped with eccentric block.

Claims

1, a kind of grain combined cleaning sift, comprise that sieve ship, one deck remove big assorted sieve, two layers are removed thin assorted sieve, lower bearing bracket, assorted greatly discharging opening, carefully assorted discharging opening, clean paddy discharging opening, it is characterized in that it is 6～11 ° that described one deck removes the big assorted screen angle that sieves, two layers of screen angle that removes thin assorted sieve are 10～15 °, sieve boat bottom vibrating motor is installed.

2, grain combined cleaning sift according to claim 1, it is characterized in that it is 7～9 ° that one deck removes the big assorted screen angle that sieves, two layers of screen angle that removes thin assorted sieve are 11～13 °, and vibrating motor is installed in the central authorities of sieve boat bottom, and vibrating motor rotating shaft two ends are equipped with eccentric block.

3, grain combined cleaning sift according to claim 1 is characterized in that it is 8 ° that one deck removes the big assorted screen angle that sieves, and two layers of screen angle that removes thin assorted sieve are 13 °.