CN107185831B - Cereal dual specific gravity carefully chosen sieve - Google Patents

Abstract

The invention discloses a dual specific gravity selecting sieve for grains, which comprises a bracket with rollers, wherein a primary specific gravity sieve and a secondary specific gravity sieve are fixedly arranged on the bracket, a high-frequency vibrating sieve is connected between the primary specific gravity sieve and the secondary specific gravity sieve, a high-frequency vibrating motor is arranged on the side wall of the high-frequency vibrating sieve, the primary specific gravity sieve and the secondary specific gravity sieve comprise a specific gravity sieve body and a specific gravity fan, the front end and the rear end of the specific gravity sieve body are respectively hinged with a connecting rod, the other end of the connecting rod is hinged with the bracket, and the side wall of the specific gravity sieve body is hinged with a specific gravity rocker.

Description

Cereal dual specific gravity carefully chosen sieve

Technical Field

The invention relates to the field of grain screening, in particular to a grain double specific gravity fine screening sieve.

Background

The gravity machine is a mechanical device for screening and selecting seeds, and can select qualified and excellent seeds according to the differences of the seeds and impurities in terms of shape, size, specific gravity, surface characteristics, aerodynamic characteristics and the like. Meanwhile, seeds can be carefully selected and classified by using a gravity machine, so that robust and full seeds with strong vitality can be selected. Therefore, the gravity machine replaces the traditional low-efficiency operation mode of manual seed selection and manual screening.

However, when the existing specific gravity machine is used for screening and selecting seeds, the screening device in the existing specific gravity machine needs to reciprocate, so that the specific gravity machine is driven to shake to a certain extent. Therefore, the gravity machine has poor stability after being used for a certain time, and the seed falls off.

Disclosure of Invention

The invention aims to provide a dual specific gravity selecting sieve for grains, which is added with a high-frequency vibrating sieve as an excessive mode, so that grains are screened and classified by the vibrating sieve after being subjected to primary specific gravity screening, and then the secondary specific gravity screening is performed for residual mildew and dust removal, thereby improving the screening effect, improving the grain screening precision and achieving the effects of environmental protection and no pollution.

The technical scheme of the invention is as follows:

the utility model provides a dual proportion carefully chosen sieve of cereal, including the support that has the gyro wheel, fixedly on the support be provided with once proportion sieve, secondary proportion sieve, be connected with the high-frequency vibration sieve between once proportion sieve and the secondary proportion sieve, install high-frequency vibrating motor on the high-frequency vibration sieve lateral wall, once proportion sieve, secondary proportion sieve is including proportion screen body, proportion fan, proportion screen body front end, rear end hinge respectively have the connecting rod, the connecting rod other end hinge is on the support, proportion screen body lateral wall hinge has the proportion rocker, proportion rocker passes through proportion motor drive rotation, secondary proportion sieve outside is equipped with the discharge gate; a suction fan is connected above the secondary specific gravity sieve, and a dust removal port is connected to the other side of the suction fan; the upper part of the gravity screen body of the primary gravity screen is communicated with a left Sha Kelong and a right Sha Kelong, the bottom ends of the left Sha Kelong and the right Sha Kelong are respectively provided with a wind-related device, a main air duct extends into the left Sha Kelong and the right Sha Kelong, and the end part of the main air duct is provided with a main fan.

The bottoms of the left Sha Kelong and the right Sha Kelong are provided with impurity outlets.

The outer side of the primary specific gravity sieve is provided with a lifting machine, the discharge end of the lifting machine enters the specific gravity sieve body of the primary specific gravity sieve through a material guide opening, and the lower end of the lifting machine is provided with a material inlet.

The specific gravity sieve of the invention utilizes the physical properties of different weight and suspension speed of impurities and grains to promote the classification of the impurities and the grains by the action of air flow passing upwards through a grain slag gap, and the impurities flow to a impurity outlet under the action of a impurity lifting sieve plate which performs directional inclined reciprocating motion, thereby separating the impurities from the grains. The dual specific gravity sieve is characterized in that a high-frequency vibrating sieve is added on the basis of the original single specific gravity sieve to serve as an excessive mode, grains are screened and classified by the vibrating sieve after primary specific gravity screening, secondary specific gravity screening is performed again, residual mildew and dust are removed, screening effect is improved, grain screening precision is improved, and meanwhile, the effects of environmental protection and no pollution are achieved.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a side view of the present invention.

Fig. 3 is a top view of the present invention.

Detailed Description

Referring to the attached drawings, a dual specific gravity selecting sieve for grains comprises a bracket 1 with rollers, wherein a primary specific gravity sieve 2 and a secondary specific gravity sieve 3 are fixedly arranged on the bracket 1, a high-frequency vibration sieve 4 is connected between the primary specific gravity sieve 2 and the secondary specific gravity sieve 3, a high-frequency vibration motor 5 is arranged on the side wall of the high-frequency vibration sieve 4, the primary specific gravity sieve 2 and the secondary specific gravity sieve 3 comprise a specific gravity sieve body 6 and a specific gravity fan 7, the front end and the rear end of the specific gravity sieve body 6 are respectively hinged with a connecting rod 8, the other end of the connecting rod 8 is hinged on the bracket 1, a specific gravity rocker 9 is hinged on the side wall of the specific gravity sieve body 6, the specific gravity rocker 9 is driven to rotate by a specific gravity motor 10, and a discharge hole 11 is arranged on the outer side of the secondary specific gravity sieve 3; a suction fan 12 is connected above the secondary specific gravity screen 3, and a dust removal port 13 is connected with the other side of the suction fan 12; the upper part of the specific gravity screen body 6 of the primary specific gravity screen 2 is communicated with a left shack cage 14 and a right shack cage 15, the bottom ends of the left shack cage 14 and the right Sha Kelong are respectively provided with a wind-closing device 16, a main air duct 17 extends into the left shack cage 14 and the right shack cage 15, and the end part of the main air duct 17 is provided with a main fan 18.

The bottom ends of the Zuo Shake cage 14 and the right Sha Kelong are provided with impurity outlets 19, the outer side of the primary gravity sieve 2 is provided with a lifting machine 20, the discharge end of the lifting machine 20 enters the gravity sieve body 6 of the primary gravity sieve 1 through a material guide opening, and the lower end of the lifting machine 20 is provided with a material inlet 21.

The working principle of the invention is as follows: the grains are sent to a primary gravity sieve through a feeding hole to screen light and fine impurities and dust, meanwhile, impurities in the grains are discharged through an impurity outlet by the operation of a left Sha Kelong and a right shack cage, the grains are screened by a primary gravity table, then the grains are screened by a high-frequency vibration sieve, the impurities and the crushed grains with different sizes from finished products are screened by the high-frequency vibration sieve, the finished products flow into a secondary gravity table to carry out residual mildew screening and dust removal, and finally, the grains are discharged through a discharging hole.

Claims (1)

1. The utility model provides a dual proportion carefully chosen sieve of cereal, including the support that has the gyro wheel, fixedly on the support be provided with once proportion sieve, secondary proportion sieve, characterized in that, be connected with the high-frequency vibration sieve between once proportion sieve and the secondary proportion sieve, install high-frequency vibrating motor on the high-frequency vibration sieve lateral wall, once proportion sieve, secondary proportion sieve is including proportion screen body, proportion fan, proportion screen body front end, rear end hinge respectively have the connecting rod, the connecting rod other end hinge is on the support, proportion screen body lateral wall hinge has proportion rocker, proportion rocker passes through the proportion motor drive rotation, the secondary proportion sieve outside is equipped with the discharge gate; a suction fan is connected above the secondary specific gravity sieve, and a dust removal port is connected to the other side of the suction fan; the upper part of the gravity screen body of the primary gravity screen is communicated with a left Sha Kelong and a right Sha Kelong, the bottom ends of the left Sha Kelong and the right Sha Kelong are respectively provided with a wind-related device, a main air duct extends into the left Sha Kelong and the right Sha Kelong, and the end part of the main air duct is provided with a main fan;

impurity outlets are arranged at the bottom ends of the left Sha Kelong and the right Sha Kelong;

the outer side of the primary specific gravity sieve is provided with a lifting machine, the discharge end of the lifting machine enters the specific gravity sieve body of the primary specific gravity sieve through a material guide opening, and the lower end of the lifting machine is provided with a material inlet.