CN116618303A - Sesame linear winnowing equipment and control system - Google Patents

Abstract

The invention discloses sesame linear winnowing equipment and a control system, and relates to the technical field of sesame screening. In the invention, the following components are added: the screening device is arranged below the horizontal conveying belt and comprises an accelerating air duct, the accelerating air duct is provided with a wide opening matched with the position of the horizontal conveying belt and an accelerating air duct vertically communicated with the wide opening, and the inner wall of the accelerating air duct is sequentially provided with a plurality of groups of inclined air holes from top to bottom. The screening device is provided with a rigid inclined plane positioned under the accelerating air duct, the screening device is fixedly provided with a telescopic driving device, the telescopic driving device comprises a telescopic shaft rod, the front end of the telescopic shaft rod is fixedly connected with a wedge-shaped table, and the wedge-shaped table is provided with a sliding surface. The sifter is provided with a flat sesame collection bin close to the rigid inclined surface and a full sesame collection bin far away from the rigid inclined surface. The invention completes the effective screening of the shrunken sesame and the full sesame, simplifies the working procedures, reduces the cost of the screening process and improves the quality of the final sesame product.

Description

A linear winnowing equipment and control system for sesame

technical field

The invention relates to the technical field of sesame screening, in particular to a sesame linear winnowing equipment and a control system.

Background technique

During the sorting process of sesame seeds, some deflated sesame seeds and plump sesame seeds are mixed together, and it is necessary to screen out deflated sesame seeds or sesame seeds that are not plump enough, so that the sesame seeds that meet the fullness standard are finally screened out. Screening is generally done by color sorting machine or floating screening, but color sorting machines can only effectively screen when the color difference is large, and floating screening, after the shriveled sesame seeds are completely immersed in water, the density may also be closer to that of plump sesame seeds , it is not easy to carry out high-purity screening, and subsequent processes such as drying are required. Therefore, how to effectively screen shriveled sesame and plump sesame, reduce the complexity and cost of the process, and improve the quality of sesame products has become a problem that needs attention in the sesame processing process.

Contents of the invention

The technical problem to be solved by the present invention is to provide a linear air-selection equipment and control system for sesame, thereby completing the effective screening of shriveled sesame and plump sesame, simplifying the process, reducing the cost of the screening process, and improving the quality of the final sesame product .

In order to solve the problems of the technologies described above, the present invention is achieved through the following technical solutions:

The invention provides a linear winnowing device for sesame, which includes a vibrating feeding box and a horizontal conveyor belt located directly below the outlet of the vibrating feeding box. A filter is arranged below the horizontal conveyor belt. The air duct is provided with a wide opening matching the position of the horizontal conveyor belt, and an accelerating air duct vertically connected with the wide opening. The inner wall of the accelerating air duct is sequentially provided with multiple groups of oblique air holes from top to bottom. The sieve is provided with a rigid inclined surface directly below the acceleration air tube, and the sieve is fixedly installed with a telescopic drive device. The telescopic drive device includes a telescopic shaft. The filter is equipped with a flat sesame collection bin close to the rigid inclined surface and a full sesame collection bin away from the rigid inclined surface, wherein the lowest point of the lower surface of the wedge-shaped table is located directly above the upper opening of the full sesame collection bin.

As a preferred technical solution of the device of the present invention: the filter is provided with at least two fixed guide rods parallel to each other, and the bottom of the wedge-shaped platform is slidably installed at the position of the fixed guide rods.

As a preferred technical solution of the device of the present invention: multiple oblique air holes at the same height have the same downward angle and the same air outlet rate.

As a preferred technical solution of the device of the present invention: the air outlet rate of the oblique air holes increases sequentially along the direction from top to bottom.

As a preferred technical solution of the equipment of the present invention: the telescopic drive device is located below the rigid inclined surface, and the gap area between the wedge-shaped platform and the lowest point of the rigid inclined surface is located within the upper opening range of the flat sesame collection bin.

As a preferred technical solution of the device of the present invention: the horizontal height of the meeting point of the vertical axis line of the acceleration air duct and the rigid inclined surface is higher than the horizontal height of the highest point of the wedge-shaped platform.

The present invention provides a kind of control system of linear winnowing equipment for sesame, comprising the following contents:

Link 1. Horizontal transmission of sesame seeds: the vibrating feeding box drops the sesame seeds one by one on the horizontal conveyor belt, and the horizontal conveyor belt drives the sesame seeds horizontally to the top of the acceleration fan cylinder, and the sesame seeds fall vertically into the wide mouth of the acceleration fan cylinder, in the acceleration duct.

Step 2. Accelerated falling of sesame seeds: After the sesame seeds enter the acceleration air duct of the acceleration air duct, the oblique air holes in the acceleration air duct blow air obliquely downwards, and the sesame grains are gradually impacted by the vertical airflow.

Link 3, changing direction and bouncing: the falling sesame grains are further accelerated by the acceleration fan tube, and collide with the rigid inclined surface directly below the acceleration fan tube at an off-angle. It starts to change direction and bounce, and is affected by its own weight and the total kinetic energy of the sesame seeds before changing direction and jumping, and completes the direction changing path movement of sesame seeds.

Among them, the full-bodied sesame seeds have a high speed and a large total kinetic energy before changing directions and jumping, and the changing direction and jumping heights are large and the distance is long. Before deflated sesame seeds change direction and bounce, the speed is small, the total kinetic energy is small, the height of deflated sesame seeds is small, and the distance is short, so they fall into the deflated sesame seed collection bin.

Link 4. Variable ratio screening: the telescopic drive device drives and adjusts the lateral position of the wedge-shaped table, changes the gap range between the wedge-shaped table and the lowest point of the rigid inclined surface, and screens the sesame seeds with corresponding plumpness.

Compared with prior art, the beneficial effect of the present invention is:

The invention horizontally transmits the sesame seeds to the screener by vibrating the feeding box and the horizontal transmission belt, and accelerates the sesame seeds in the falling process multiple times through the accelerating air duct of the screener, so as to widen the gap between plump sesame seeds and shriveled sesame seeds. The difference in kinetic energy between different types of sesame seeds is changed by rigid tilting, and the sesame seeds with different kinetic energies are bounced in different directions. The wedge-shaped table is used to collect plump sesame seeds and sesame seeds that meet a certain degree of plumpness, and complete the collection of dry sesame seeds and plump sesame seeds. Effective screening simplifies the process, reduces the cost of the screening process, and improves the quality of the final sesame product.

Description of drawings

Fig. 1 is the overall structure schematic diagram of linear winnowing equipment for sesame among the present invention.

Fig. 2 is a (right side) schematic diagram of the cooperation between the wedge-shaped table and the fixed guide rod in the present invention.

FIG. 3 is a partially enlarged schematic diagram of A in FIG. 1 .

FIG. 4 is a partially enlarged schematic diagram of B in FIG. 1 .

Among them: 1-vibrating feeding box; 2-horizontal conveyor belt; 3-screener, 301-fixed guide rod; 4-accelerating air duct, 401-wide mouth, 402-accelerating air duct, 403-oblique air hole; 5 -Rigid inclined surface; 6-Bouncing normal; 7-Full sesame moving path; 8-Deflated sesame moving path; 9-Telescopic drive device, 901-Telescopic shaft; 10-Wedge table, 1001-Sliding surface; 11-Deflated Sesame collection warehouse; 12-full sesame collection warehouse.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be 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 present invention, not to limit the present invention.

Embodiment 1, the present invention carries out the main principle content of accelerated separation of deflated sesame and plump sesame as follows:

According to the air resistance formula, the resistance is related to the square of the falling speed, that is The greater the falling speed, the greater the resistance, then when the speed reaches a certain level, the resistance f and the gravity mg reach a balance, and the speed at this time is called the terminal speed, that is, Among them, the air resistance coefficient C, the air density ρ, the effective cross-sectional area S of the object and the acceleration of gravity g are all constants, so the terminal velocity is only related to the mass of the object, the greater the mass, the greater the terminal velocity.

Then let’s talk about acceleration. According to Newton’s second law, the acceleration a=(mg-f)/m can be obtained. Before the object reaches the terminal velocity, the heavier the object, the greater the acceleration, and the real-time speed of the free fall Considering air resistance, /> The heavier the object, the greater the speed when it falls to a certain height, and the kinetic energy generated by itself /> Also bigger.

During the falling process of deflated sesame seeds and plump sesame seeds, the air resistance coefficient C and the effective cross-sectional area S of the object are very close, and the weight of plump sesame seeds is greater than that of deflated sesame seeds. Therefore, the kinetic energy generated by plump sesame seeds is also greater. After contact with the rigid inclined surface 5, during the process of changing direction and bouncing, the resultant force Fs between the upward direction force Ft and the gravity G is formed on the sesame grains, and the weight difference between shriveled sesame seeds and plump sesame seeds is not special. Large, but the difference in the square of the velocity when it comes into contact with the rigid inclined surface 5 is very large. When bouncing in a direction change, the plump sesame seeds "bounce" farther than the deflated sesame seeds. The wedge-shaped platform 10 is used for position coordination to "meet" the plump sesame seeds. Or a certain degree of fullness of sesame.

Embodiment two, the present invention designs a kind of sesame linear winnowing equipment, and its main structural feature is as follows:

Please refer to Fig. 1, the horizontal conveyer belt 2 is arranged directly below the discharge port of the vibrating lower material box 1, the horizontal conveyer belt 2, and the screener 3 is provided with an accelerating air cylinder 4, and the accelerating air cylinder 4 is located below the downstream end of the horizontal conveying belt 2 Location. The filter 3 is equipped with a flat sesame collection bin 11 and a full sesame collection bin 12, the flat sesame collection bin 11 is close to the rigid inclined surface 5, and the full sesame collection bin 12 is far away from the rigid inclined surface 5, wherein the lower surface 1001 of the wedge-shaped platform 10 is at the lowest point It is located directly above the opening on the upper side of the plump sesame collection bin 12, so that the plump sesame seeds can enter the plump sesame seed collection bin 12 smoothly.

Please refer to Fig. 1 and Fig. 2, the filter 3 is provided with a plurality of fixed guide rods 301, for example, two fixed guide rods 301 are set, the fixed guide rods 301 are parallel to each other, and the bottom of the wedge-shaped platform 10 is slidably installed at the position of the fixed guide rods 301 .

Please refer to Fig. 1 and Fig. 3, the accelerating air tube 4 is provided with a wide opening 401 and an accelerating air duct 402, the accelerating air duct 402 is vertically connected with the wide opening 401, the wide opening 401 matches the position of the horizontal conveyer belt 2, and the sesame seeds from the horizontal When the conveyor belt 2 falls, it falls into the wide mouth 401 and the acceleration air duct 402, and the inner wall of the acceleration air duct 402 is provided with a plurality of sets of oblique air holes 403 from top to bottom.

A plurality of oblique air holes 403 at the same height, that is, a plurality of oblique air holes 403 of the same group, have the same downward angle and the same air outlet rate, thereby further ensuring that the sesame grains move along the vertical center of the acceleration air duct 402. The axis accelerates downward. Wherein, the air outlet rate of the oblique air hole 403 increases sequentially along the direction from top to bottom, that is, the lower the oblique air hole 403 in the horizontal position, the higher the air outlet rate, which further enhances the acceleration effect of the sesame seeds.

Please refer to Fig. 1, Fig. 4, screener 3 is provided with sexual inclined surface 5, and sexual inclined surface 5 is positioned at the acceleration air duct 4 directly below, and when sesame grain accelerates to fall from acceleration air duct 4 to rigid inclined surface 5, sesame grain is in the rigidity inclined surface 5. Change direction " bouncing " takes place on the inclined surface 5 . The kinetic energy of plump sesame seeds is relatively large. When changing direction and "bouncing", the bouncing force symmetrically along the bouncing normal 6 is relatively large [in fact, kinetic energy is converted into elastic potential energy, and then converted from elastic potential energy to kinetic energy]. The plump sesame seeds move The path 7 goes up and bounces farther, and falls into the plump sesame collection bin 12 along the lower surface 1001 of the wedge-shaped platform 10 . The kinetic energy of the deflated sesame seeds is very small, and there is no sesame kernel inside to provide the kinetic energy of "gathering momentum". After the deflated sesame seeds impact and contact the rigid inclined surface 5, the deflated sesame seeds have a shorter moving path 8 and fall into the deflated sesame seeds collection bin 11. In addition, referring to FIG. 3 , the horizontal height of the meeting point of the vertical axis line of the acceleration air duct 402 and the rigid inclined surface 5 is higher than the horizontal height of the highest point of the wedge-shaped platform 10 . The telescopic driving device 9 is located in the inner area below the rigid inclined surface 5 of the filter 3. The telescopic driving device 9 includes a telescopic shaft rod 901, and the front end of the telescopic shaft rod 901 is fixedly connected to the wedge-shaped table 10. Between 10 and the lowest point of the rigid inclined surface 5, a void area is formed, and the void area is located in the open range of the flat sesame collection bin 11 upper sides.

Embodiment 3. The present invention relates to a control system for sesame linear winnowing equipment, which includes such links as horizontal transmission of sesame, accelerated falling of sesame, changing direction and bouncing, and variable ratio screening. The specific contents are as follows:

First, carry out the horizontal transmission of sesame seeds: the vibrating feeding box 1 drops the sesame seeds one by one on the horizontal conveyor belt 2, and the horizontal conveyor belt 2 drives the sesame seeds horizontally to the top of the acceleration air cylinder 4, and the sesame grains fall vertically into the acceleration air cylinder 4 in the wide mouth 401, the acceleration air duct 402.

Then, carry out the accelerated falling of sesame seeds: after the sesame seeds enter the acceleration air passage 402 of the acceleration air duct 4, the oblique air holes 403 in the acceleration air passage 402 are obliquely blown downwards, and the sesame seeds are gradually strengthened by the vertical airflow impact.

Then, the sesame grains bounce in a different direction: the sesame grains that further accelerate the falling through the acceleration duct 4 collide with the rigid inclined surface 5 directly below the acceleration duct 4 at an off-angle (that is, non-right angle), and the sesame grains move vertically. The bouncing normal 6 on the rigid inclined surface 5 is the axis of symmetry, and it begins to change direction and bounce, and is affected by its own weight and the total kinetic energy of the sesame grains before the direction change bounces, and completes the direction change path movement of the sesame grains.

Among them, the plump sesame seeds have a large speed before changing direction and bouncing, the total kinetic energy is large, the changing direction bouncing height is large, and the distance is long, falling on the sliding surface 1001 of the wedge-shaped platform 10, and falling into the plump sesame collection bin 12; The front speed is small, the total kinetic energy is small, and the jumping height of changing direction is small, and the distance is short, and falls into the flat sesame collection bin 11.

Finally, it is also possible to carry out variable ratio screening on the fullness of sesame seeds: the telescopic drive device 9 drives and adjusts the lateral position of the wedge-shaped table 10, changes the range of the gap between the wedge-shaped table 10 and the lowest point of the rigid inclined surface 5, and controls the corresponding fullness of the sesame seeds. Screening, as shown in Figure 1 and Figure 4, the telescopic drive device 9 pushes the wedge-shaped platform 10 outwards, the gap between the wedge-shaped platform 10 and the rigid inclined surface 5 becomes larger, and the sesame seeds that are not plump enough will fall into the flattened sesame seeds. Sesame collection bin 11. And if the telescopic driving device 9 pulls the wedge-shaped table back, the sesame that can fall into the shriveled sesame collection bin 11 is more "shrunken". , can play the role of linear adjustment, and is also conducive to suitable screening according to the plumpness of sesame, and to screen out sesame that meets a certain plumpness requirement.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (7)

1. a linear winnowing equipment for sesame, comprising a vibrating feeding box (1) and a horizontal conveyor belt (2) positioned directly below the vibrating feeding box (1) outlet, characterized in that: A screener (3) is arranged below the horizontal conveyor belt (2), and the screener (3) includes an acceleration air cylinder (4), and the acceleration air cylinder (4) is provided with the horizontal transmission belt (2) The wide mouth (401) with matching positions, and the acceleration air channel (402) vertically connected with the wide mouth (401), the inner wall of the acceleration air channel (402) is provided with multiple groups of oblique air holes (403) from top to bottom ); The screener (3) is provided with a rigid inclined surface (5) directly below the acceleration air cylinder (4), the screener (3) is fixedly installed with a telescopic drive device (9), and the telescopic drive device (9) ) includes a telescopic shaft (901), the front end of the telescopic shaft (901) is fixedly connected to the wedge-shaped platform (10), and the wedge-shaped platform (10) is provided with a lower surface (1001); The filter (3) is equipped with a flat sesame collection bin (11) close to the rigid inclined surface (5), and a full sesame collection bin (12) away from the rigid inclined surface (5), wherein the wedge-shaped platform (10) The lowest point of the lower surface (1001) is located directly above the upper side opening of the plump sesame collection bin (12). 2. a kind of sesame linear winnowing equipment according to claim 1, is characterized in that: The filter (3) is provided with at least two fixed guide rods (301) parallel to each other, and the bottom of the wedge-shaped table (10) is slidably installed at the position of the fixed guide rods (301). 3. a kind of linear winnowing equipment for sesame according to claim 1, is characterized in that: Multiple oblique air holes (403) at the same height have the same downward angle and the same air outlet rate. 4. a kind of linear winnowing equipment for sesame according to claim 1 or 3, is characterized in that: The air outlet rate of the oblique air holes (403) increases sequentially along the direction from top to bottom. 5. a kind of linear winnowing equipment for sesame according to claim 1, is characterized in that: The telescopic driving device (9) is located below the rigid inclined surface (5), and the gap area between the wedge-shaped table (10) and the lowest point of the rigid inclined surface (5) is located at the upper opening of the flat sesame collection bin (11) within range. 6. a kind of linear winnowing equipment for sesame according to claim 1, is characterized in that: The horizontal height of the meeting point of the vertical axis line of the acceleration air duct (402) and the rigid inclined surface (5) is higher than the horizontal height of the highest point of the wedge-shaped platform (10). 7. A control system for sesame linear winnowing equipment, characterized in that, adopts a kind of sesame linear winnowing equipment described in any one of claims 1 to 6, comprising the following: Link 1. Sesame horizontal transmission The vibrating feeding box (1) drops the sesame seeds one by one on the horizontal conveyor belt (2), and the horizontal conveyor belt (2) drives the sesame seeds horizontally to the top of the accelerating wind tube (4), and the sesame seeds fall vertically into the accelerating wind In the wide mouth (401) and the acceleration air duct (402) of tube (4); Link 2. Sesame speeds up the falling After the sesame grains enter the acceleration duct (402) of the acceleration duct (4), the oblique air holes (403) in the acceleration duct (402) blow air obliquely downwards, and the sesame grains are gradually impacted by the vertical airflow. ; Link 3: Changing direction and bouncing The falling sesame seeds are further accelerated by the accelerating air tube (4), and collide with the rigid inclined surface (5) directly below the accelerating air tube (4). The line (6) is the axis of symmetry, and it starts to change direction and bounce, and is affected by its own weight and the total kinetic energy of the sesame seeds before changing direction and jumping, and completes the direction change path movement of sesame seeds; Among them, the plump sesame seeds have a high speed and a large total kinetic energy before changing direction and jumping, and the changing direction jumping height is large and the distance is long, falling on the lower surface (1001) of the wedge-shaped platform (10), and falling into the plump sesame collection bin (12); The deflated sesame grains have a small speed and a small total kinetic energy before changing direction and jumping, and the height of changing direction and jumping is small and the distance is short, so they fall into the deflated sesame seed collection bin (11); Link 4. Variable ratio screening The telescopic driving device (9) drives and adjusts the lateral position of the wedge-shaped table (10), changes the range of the gap between the wedge-shaped table (10) and the lowest point of the rigid inclined surface (5), and screens sesame seeds of corresponding plumpness.