CN221656844U - Cleaning and impurity removing equipment used in rice processing process - Google Patents

Abstract

The utility model discloses cleaning and impurity removal equipment used in the rice processing process, including an air-selected cyclone mechanism, an electric vibrating screen, a magnetic separation drum, and a belt conveyor; the air-selected cyclone mechanism includes a cyclone drum, a tangential feed pipe connected to the upper side wall of the cyclone drum, an overflow pipe suspended at the top of the cyclone drum and extending outward, and a solid suction machine connected to the overflow pipe; the upper part of the cyclone drum is a cylindrical structure, and the lower part is a conical cylinder structure, and the tangential feed pipe is connected to a compressed air machine; the electric vibrating screen adopts an obliquely vibrating screen surface; the outlet of the granular impurities of the electric vibrating screen is connected to an impurity collection tank through an oblique pipe; the rice outlet of the electric vibrating screen is connected to a magnetic separation drum; and an electromagnet is arranged on the inner wall of the magnetic separation drum. The utility model adopts an integrated combination of an air-selected cyclone mechanism + an electric vibrating screen + a magnetic separation drum to realize primary cleaning, stone removal, and magnetic cleaning, thereby removing impurities generated in the rice during harvesting, transportation, and storage.

Description

Cleaning and impurity removal equipment used in rice processing

Technical Field

The utility model belongs to the technical field of rice processing, and in particular relates to cleaning and impurity removing equipment used in the rice processing process.

Background Art

Rice starts from sowing, grows, is harvested, dried, stored and transported. Impurities may be mixed into each process, such as sand, soil, coal dust, nails, rice straw and weed seeds. If not removed in time, it is easy to damage the equipment and mix into the finished rice. While considering the cleaning cost, choose a reasonable way to remove impurities in rice so that it can reach the clean rice quality index before hulling (total impurities less than 0.6%, stone less than 1 grain/kg, barnyard grass less than 130 grains/kg). If it is not removed thoroughly during the processing, it will not only affect production safety and reduce the quality of rice, but also be harmful to human health.

Utility Model Content

In view of the deficiencies and difficulties in the prior art, the utility model aims to provide a cleaning and impurity removal device for use in the rice processing process.

The utility model is implemented through the following technical solutions:

The cleaning and impurity removal equipment used in the rice processing process includes an air selection cyclone mechanism for removing light impurities by air selection, an electric vibrating screen for removing particulate impurities by screening, a magnetic separation drum for separating magnetic impurities in rice by magnetic separation, and a belt conveyor for conveying the cleaned and impurity-removed rice to subsequent processes or a clean grain bin; the air selection cyclone mechanism includes a cyclone drum, a tangential feed pipe connected to the upper side wall of the cyclone drum, an overflow pipe suspended from the top of the cyclone drum and extending outward, and a solid suction machine connected to the overflow pipe; the upper part of the cyclone drum is a cylindrical structure, and the lower part is a conical cylinder structure, and the tangential feed pipe is also connected to a compressed air machine; the electric vibrating screen adopts an obliquely vibrating screen surface, and the electric vibrating screen uses screen surfaces with different meshes to separate sand and gravel from rice; the outlet of the particulate impurities of the electric vibrating screen is connected to an impurity collection tank; the rice outlet of the electric vibrating screen is connected to the magnetic separation drum through a connecting oblique pipe; an electromagnet is arranged on the inner wall of the magnetic separation drum.

Furthermore, an underflow pipe is arranged at the end of the cyclone tube, and a vertical flow splitter cone is installed in the underflow pipe, with the tip of the flow splitter cone facing upward.

Furthermore, a discharge valve is provided at the connection between the underflow pipe and the inlet of the electric vibrating screen, for controlling the opening or closing between the air separation cyclone mechanism and the electric vibrating screen.

Furthermore, the electric vibrating screen adopts a double-layer linear inclined vibrating screen.

Furthermore, the outlet pipe of the magnetic separation drum is located above the belt conveyor, thereby ensuring the continuous operation of the entire device, and a discharger is arranged on the outlet pipe.

Furthermore, the discharger adopts a star-shaped discharger to achieve quantitative and continuous transportation of the cleaned and de-ironized rice.

Furthermore, protective plates are arranged on both sides of the belt conveyor or a protective cover is installed above the belt conveyor.

Furthermore, the electric vibrating screen may also be equipped with a blower, which is located on the upper side of the screen surface of the electric vibrating screen to blow air on the screen surface along its oblique direction.

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

1. The utility model adopts an integrated combination of wind selection cyclone mechanism + electric vibrating screen + magnetic separation drum to achieve primary cleaning, stone removal and magnetic cleaning, thereby removing impurities generated during the harvesting, transportation and storage of rice.

2. The wind-selecting cyclone mechanism of the utility model utilizes the difference in gas dynamics characteristics such as specific gravity and suspension speed between impurities (light impurities such as rice stalks and dust) and rice, so that light impurities (such as rice husks, rice stalks, and unfilled grains) are carried away by wind in the rising or horizontal airflow and separated from the rice.

3. The utility model utilizes the different particle sizes and specific gravities of rice and sand and gravel to separate granular impurities such as sand and gravel from rice on an obliquely vibrating screen surface.

4. In the utility model, the rice is flowed through the surface of the electromagnet by using a magnetic separation cylinder, thereby separating the magnetic impurities in the rice.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of the utility model.

Illustrations: 1-wind separation cyclone mechanism, 101-solid suction machine, 102-overflow pipe, 103-cyclone cylinder, 104-tangential feed pipe, 105-diverter cone, 106-underflow pipe, 2-discharge valve, 3-electric vibrating screen, 4-discharger, 5-belt conveyor, 6-protective plate, 7-magnetic separation cylinder, 8-impurity collection tank, 9-connecting inclined pipe, 10-blower.

DETAILED DESCRIPTION

In order to make the purpose, technical solution and beneficial effects of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In order to illustrate the technical solution of the present invention, specific embodiments are provided below for illustration.

As shown in FIG1 , the cleaning and impurity removal equipment used in the rice processing process includes an air separation cyclone mechanism 1 for removing light impurities by air separation, an electric vibrating screen 3 for removing particulate impurities by screening, a magnetic separation drum 7 for separating magnetic impurities in rice by magnetic separation, and a belt conveyor 5 for transporting the cleaned and impurity-removed rice to subsequent processes or a clean grain silo.

A large part of the impurities contained in rice are rice straw and dust, etc., among which rice straw is usually long, soft and fibrous, which is particularly easy to entangle the working parts of the equipment and block the inlet and outlet of the equipment, finally causing production interruption. The air selection cyclone mechanism 1 uses the difference between impurities (rice straw, dust and other light impurities) and rice in terms of specific gravity, suspension speed, etc. to separate the two, thereby preventing subsequent equipment from being blocked and dust from polluting the workshop. The air selection cyclone mechanism 1 includes a cyclone cylinder 103, a tangential feed pipe 104 connected to the upper side wall of the cyclone cylinder 103, an overflow pipe 102 suspended at the top of the cyclone cylinder 103 and extending outward, and a solid suction machine 101 connected to the overflow pipe 102. The upper part of the cyclone cylinder 103 is a cylindrical structure, and the lower part is a conical cylinder structure. The tangential feed pipe 104 is also connected to a compressed air machine (not marked in the figure) to increase the pressure of the rice entering the cyclone cylinder 103. The rice in the tangential feed pipe 104 is mixed with the compressed gas and enters the cyclone cylinder 103 tangentially at a certain pressure. First, a surrounding fluid is formed obliquely downward along the tangential direction of the cylinder. Due to the difference in specific gravity between the rice and the light impurities, they are subjected to different centrifugal forces, centripetal buoyancy, fluid drag, etc., and the rice rotates and moves downward. When the rice reaches a certain part of the cone of the conical cylinder, the light impurities rotate upward along the axis of the cylinder, and are discharged through the overflow pipe 102 under the action of the solid suction machine 101; while the heavier rice falls below along the wall of the cone of the conical cylinder under the action of the inertial centrifugal force and its own gravity and enters the subsequent electric vibrating screen 3. The air separation cyclone mechanism utilizes the differences in gas dynamics such as the specific gravity and suspension velocity of rice and impurities, so that light impurities (such as husks, rice straws, and unfilled grains) are carried away by wind in the rising or horizontal airflow and separated from the rice.

An underflow pipe 106 is arranged at the end of the cyclone tube 103, and a vertical diverter cone 105 is installed in the underflow pipe 106, with the tip of the diverter cone 105 facing upward. The arrangement of the diverter cone 105 can prevent the accumulation of excessive amount of rice at one time, thereby causing blockage of the channel.

A discharge valve 2 is provided at the connection between the underflow pipe 106 and the inlet of the electric vibrating screen 3 to control the opening or closing between the air separation cyclone mechanism and the electric vibrating screen 3 .

Using the different particle sizes and specific gravities of rice and sand and gravel, the electric vibrating screen 3 uses different mesh screen surfaces to separate granular impurities such as sand and gravel from rice on the obliquely vibrating screen surface. The electric vibrating screen 3 uses a double-layer linear inclined vibrating screen, and uses the principle of vibration motor excitation to make the rice be thrown up on the screen surface, and at the same time move forward linearly to achieve the purpose of screening with a reasonably matched screen. The electric vibrating screen 3 is generally composed of a base, a vibration chamber, a vibration motor, a shock absorber, etc., and its specific structure, connection, and composition adopt conventional technical means, which will not be repeated here. The electric vibrating screen 3 separates sand and gravel from rice on different surfaces, and the outlet of impurities such as sand and gravel of the electric vibrating screen 3 is connected to the impurity collection tank 8; the rice outlet of the electric vibrating screen 3 is connected to the magnetic separation cylinder 7 through the connecting oblique tube 9. The electric vibrating screen 3 can also be equipped with a blower 10, which is located on the upper side of the screen surface of the electric vibrating screen 3, and blows air to the screen surface along its oblique direction, so that the electric vibrating screen 3 can combine the airflow to improve the separation efficiency of granular impurities such as sand and gravel from rice.

Rice contains some magnetic impurities, which are easy to damage equipment with strong friction and easy to catch fire, so they should be removed as soon as possible. An electromagnet is set on the inner wall of the magnetic separation cylinder 7, and the rice flows over the surface of the electromagnet to separate the magnetic impurities in the rice. In the specific implementation, when the rice falls into the magnetic separation cylinder 7, the electromagnet is energized to generate magnetism and adsorbs the magnetic impurities to separate them from the rice; after a period of time or if the impurities are not cleaned, the electromagnet is powered off and loses its magnetism, and the magnetic impurities are discharged from the magnetic separation cylinder 7 for unified discharge.

The outlet pipe of the magnetic separation drum 7 is located above the belt conveyor 5, thereby ensuring the continuous operation of the entire device. A discharger 4 is arranged on the outlet pipe. The discharger 4 adopts a star-shaped discharger. When the rice grains processed by the upper magnetic separation drum 7 fall down by their own weight and fill in the gaps between the blades, they are discharged at the bottom as the blades rotate. Therefore, the star-shaped discharger can realize quantitative and continuous transportation of cleaned and impurity-free rice.

Protective plates 6 are provided on both sides of the belt conveyor 5 or a protective cover is provided on the top to prevent rice from spilling out during transportation and causing waste and pollution to the operating environment.

The above only expresses the preferred implementation of the utility model, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the utility model, several modifications, improvements and substitutions can be made, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims (8)

1. A clearance edulcoration equipment for among corn course of working, its characterized in that: the device comprises a winnowing rotational flow mechanism for removing light impurities through winnowing, an electric vibrating screen for removing particle impurities through screening, a magnetic separation cylinder for removing magnetic impurities in separated unhulled rice through magnetic separation, and a belt conveyor for conveying the unhulled rice after cleaning to a subsequent process or a grain cleaning bin;

The air separation swirling mechanism comprises a swirling cylinder, a tangential feeding pipe communicated with the side wall of the upper part of the swirling cylinder, an overflow pipe suspended at the top end of the swirling cylinder and extending outwards, and a solid suction machine communicated with the overflow pipe; the upper part of the cyclone cylinder is of a cylindrical structure, the lower part of the cyclone cylinder is of a conical cylinder structure, and the tangential feed pipe is also connected with the compressed air machine;

The electric vibrating screen adopts a screen surface which vibrates obliquely; the outlet of the particle impurities of the electric vibrating screen is communicated with an impurity collecting tank; the paddy outlet of the electric vibrating screen is communicated with the magnetic separation cylinder through a connecting inclined pipe;

And an electromagnet is arranged on the inner wall of the magnetic separation cylinder.

2. A cleaning and impurity removing apparatus for use in a rice processing process as recited in claim 1, wherein: the end of the cyclone cylinder is provided with a bottom flow pipe, a vertical diversion cone is arranged in the bottom flow pipe, and the tip of the diversion cone faces upwards.

3. A cleaning and impurity removing apparatus for use in a rice processing process as claimed in claim 2, wherein: and a discharge valve is arranged at the joint of the underflow pipe and the inlet of the electric vibrating screen.

4. A cleaning and impurity removing apparatus for use in a rice processing process as recited in claim 1, wherein: the electric vibrating screen adopts a double-layer linear inclined vibrating screen.

5. A cleaning and impurity removing apparatus for use in a rice processing process as recited in claim 1, wherein: the outlet pipe of the magnetic separation cylinder is positioned above the belt conveyor, and the discharger is arranged on the outlet pipe.

6. A cleaning and impurity removing apparatus for use in a rice processing process according to claim 5, wherein said: the discharger adopts a star discharger.

7. A cleaning and impurity removing apparatus for use in a rice processing process as recited in claim 1, wherein: protection plates are arranged on two sides of the belt conveyor or a protection cover is sleeved above the belt conveyor.

8. A cleaning and impurity removing apparatus for use in a rice processing process as recited in claim 1, wherein: the electric vibrating screen can be further provided with a blowing machine, and the blowing machine is positioned on the upper side of the screen surface of the electric vibrating screen and blows air to the screen surface along the oblique direction of the screen surface.