A material discharging and screening device for a rotary vibrating screen

Abstract

The present application relates to the technical field of screening devices. Aiming at the problem that it is inconvenient to separate light impurities carried in traditional soybeans, a discharging screening device of a rotary vibrating screen is proposed, comprising a screening box, a feed port and an air inlet are provided on the outside of the screening box, the feed port is arranged higher than the air inlet; the feed port is connected with a fine material discharging pipe of a rotary vibrating screen used in conjunction with a discharging screening device; the top of the screening box is connected with an air outlet pipe, and an exhaust fan is installed at one end of the air outlet pipe away from the screening box; the bottom of the screening box is opened to form a discharging port, and a material flow plate is also supported at the discharging port; the material flow plate is arranged obliquely, and a discharging gap is left between the inclined lower end of the material flow plate and the inner cavity wall of the screening box. The present application has the effect of facilitating the screening of light impurities in soybeans.

Description

Technical Field

[0001] The present application relates to the field of screening devices, and in particular to a discharging screening device for a rotary vibrating screen. Background Art

[0002] In the process of grain and oil production and preparation, soybeans and other materials need to be cleaned with a rotary vibrating screen before entering the oil pressing process to screen out larger debris in the soybeans, such as bean stalks and bean shells.

[0003] In the related art, when soybeans are cleaned by a rotary vibrating screen, after the soybeans to be screened are fed into the rotary vibrating screen, the rotary vibrating screen drives the eccentric block to rotate through a motor to drive the rotary vibrating screen as a whole to produce periodic vibration. During this process, smaller materials such as soybeans pass through the screen and enter the bottom of the rotary vibrating screen and are discharged through the fine material discharge pipe of the rotary vibrating screen, while larger materials such as bean stalks and bean shells are discharged through the coarse material discharge pipe of the rotary vibrating screen, thereby achieving the cleaning and screening of the soybeans.

[0004] With respect to the above-mentioned related technologies, the soybeans discharged through the fine material discharge pipe of the rotary vibrating screen are often adhered to and mixed with some light impurities such as broken shells, crushed sand and gravel, and dust, and the light impurities are easy to cause pollution to the subsequent processing procedures of the soybeans, and have a great impact on the subsequent processing procedures of the soybeans; with respect to the light impurities carried in the soybeans, after the soybeans are cleaned out by the rotary vibrating screen, the soybeans will be transferred to a screening device with a smaller mesh for a second screening to remove the light impurities carried in the soybeans. However, due to the reasons that the light impurities such as broken bean shells are of different sizes and irregular shapes, the screen is easily blocked by light impurities such as broken bean shells during screening, resulting in the need to frequently clean the screen. The screening and separation of light impurities carried in the soybeans is relatively inconvenient. Therefore, there is room for improvement. Summary of the invention

[0005] In order to better remove light impurities carried in soybeans discharged from a rotary vibrating screen, the present application provides a discharge screening device for a rotary vibrating screen.

[0006] The present application provides a discharging screening device for a rotary vibrating screen, which adopts the following technical solution:

[0007] A discharging screening device for a rotary vibrating screen comprises a screening box, wherein a feed port and an air inlet are provided on the outer side of the screening box, wherein the feed port is arranged higher than the air inlet; the feed port is connected to a fine material discharging pipe of a rotary vibrating screen used in conjunction with a discharging screening device; an air outlet pipe is connected to the top of the screening box, and an exhaust fan is installed at one end of the air outlet pipe away from the screening box; the bottom of the screening box is opened to form a discharging port, and a flow plate is also supported at the discharging port; the flow plate is arranged obliquely, and a discharging gap is left between the inclined lower end of the flow plate and the inner cavity wall of the screening box.

[0008] By adopting the above technical solution, the outside air is drawn in through the air inlet at the bottom of the screening box by the exhaust fan and discharged through the air outlet pipe to form an upward airflow in the screening box. After the subsequent rotary vibrating screen passes the screened soybeans into the screening box through the fine material discharge pipe, the dust, broken bean shells and other light impurities carried in the soybeans are discharged out of the screening box through the air outlet pipe by the rising airflow, and the soybeans are discharged through the discharge port at the bottom of the screening box under the action of gravity, so as to achieve effective separation of soybeans and light impurities. Through the setting of the flow plate, on the one hand, the flow plate can be used to guide and limit the soybeans, so that the soybeans can be discharged smoothly from the discharge port. On the other hand, the flow plate can be used to limit the subsequent air entering the screening box from being lost through the discharge port, so as to facilitate the formation of a better upward airflow in the screening box.

[0009] Preferably, the inner cavity of the screening box is further provided with a dispersion component, and the dispersion component comprises a plurality of impact rods horizontally supported in the inner cavity of the screening box.

[0010] By adopting the above technical scheme, some light matter is easy to remain and adhere to the soybeans. By setting a plurality of impact rods in the screening box, after the soybeans entering the screening box through the feed port of the screening box collide with the plurality of impact rods, the impact rods can be used to break up and separate the soybeans from the light matter, so that the light matter carried by the soybeans can be better separated from the soybeans, so that the light matter can be better carried away by the rising air flow in the screening box.

[0011] Preferably, the screening box is provided with a plurality of rotary driving members corresponding to the plurality of striking rods, and the rotary driving members are drivingly connected to the corresponding striking rods to drive the corresponding striking rods to rotate.

[0012] By adopting the above technical solution, the impact rod is driven to rotate by the rotary driving part. On the one hand, when the subsequent falling soybeans come into contact with the impact rod, the collision angle and strength of the soybeans can be changed by the rotating impact rod, so that the light materials on the soybeans can be better separated from the soybeans; on the other hand, the rotating impact rod can better disperse the impact force of the soybeans on the impact rod, reducing the situation where the impact rod is prone to local wear and damage due to the long-term and frequent impact and collision of the soybeans, which is beneficial to extending the service life of the impact rod.

[0013] Preferably, a grid plate is further provided on the flow plate, and the lower surface of the grid plate is arranged in contact with the upper surface of the flow plate.

[0014] By adopting the above technical solution, through the setting of the grid plate, a number of buffer grooves are subsequently formed by the grid plate and the flow plate. Some soybeans fall into the buffer grooves and accumulate in the buffer grooves. The soybeans in the buffer grooves are used to form a protective layer covering the flow plate, thereby limiting the subsequent falling soybeans from directly impacting the flow plate, thereby reducing the situation in which the flow plate is easily damaged due to long-term direct impact by materials.

[0015] Preferably, the grid plate is fixed in the screening box, and the screening box is provided with a sliding drive component corresponding to the flow plate, and the sliding drive component is drivingly connected to the flow plate to drive the flow plate to slide along its own inclination direction.

[0016] By adopting the above technical solution and setting the sliding drive component, the flow plate can be driven to slide along its own inclination direction through the sliding drive component to adjust the position of the flow plate, thereby realizing the adjustment of the discharge gap between the flow plate and the inner cavity of the screening box, which is convenient for controlling the discharge amount and discharge speed of the screening box discharge port.

[0017] Preferably, when the fine material discharge pipe of the rotary vibrating screen used in conjunction with the discharge screening equipment stops dropping materials, the sliding drive member drives the flow plate to slide until the flow plate is offset from the grid plate.

[0018] By adopting the above technical solution, the sliding drive member drives the flow plate to slide and stagger the grid plate, so that the soybeans originally stored in the buffer tank can automatically fall and be discharged through the discharge port, reducing the situation where the soybeans are difficult to clean due to accumulation in the buffer tank, resulting in mildew and damage.

[0019] Preferably, the fine material discharge pipe of the rotary vibrating screen penetrates into the screening box through the feed port, and a gap is left between the inner periphery of the feed port and the outer periphery of the fine material discharge pipe; an annular rubber airbag is arranged around the feed port, and the inner periphery of the annular rubber airbag is arranged in contact with the outer periphery of the fine material discharge pipe.

[0020] By adopting the above technical solution, the vibrating screen will drive the fine material discharge pipe to vibrate during operation. By setting the annular rubber airbag at the feed pipe, the annular rubber airbag can be stretched and deformed during the subsequent vibration of the fine material discharge pipe. On the one hand, the soft connection between the feed pipe and the screening box is realized, reducing the impact of the vibration of the fine material discharge pipe on the screening box; at the same time, the gap between the feed port and the fine material discharge pipe can be blocked by the annular rubber airbag to limit external impurities from entering the screening box through the gap.

[0021] Preferably, a filter is also provided at the air inlet, and the filter covers the air inlet.

[0022] By adopting the above technical solution, the filter can intercept and filter the air entering the screening box through the air inlet to remove dust and impurities in the air, improve the cleanliness of the rising airflow in the screening box, and reduce the dust and impurities carried by the external air to contaminate the soybeans.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Use the exhaust fan to draw the outside air in from the air inlet at the bottom of the screening box and draw it out through the air outlet at the top of the screening box to form an upward airflow in the screening box. After the soybeans from the fine material discharge pipe of the subsequent rotary vibration screen enter the screening box through the feeding port of the screening box, the upward airflow in the screening box will bring the light impurities carried by the soybeans out to the air outlet, and the soybeans will fall out through the discharge port at the bottom of the screening box by their own gravity, thus realizing the effective separation of soybeans and light impurities.

[0025] 2. By supporting a flow plate on the discharge port, on the one hand, the flow plate can be used to guide and limit the falling soybeans, so that the soybeans can be discharged from the discharge port stably and smoothly; on the other hand, the flow plate can be used to reduce the subsequent leakage of air that enters the screening box through the air inlet through the discharge port.

[0026] 3. By supporting a grid plate on the flow plate, subsequent soybeans can be accumulated in a number of buffer grooves formed by the grid plate and the flow plate, forming a protective layer covering the flow plate, thereby reducing the direct impact of subsequent falling soybeans on the flow plate.

[0027] 4. By supporting a number of impact rods in the screening box and driving the impact rods to rotate through a rotary drive member, on the one hand, the collision between the material and the rotating impact rods can promote a better separation of light impurities and soybeans. On the other hand, the rotation of the impact rods can cushion the impact of soybeans on the impact rods and reduce the impact and wear of the falling soybeans on the impact rods. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram used to illustrate the positional relationship between the rotary vibrating screen and the screening device in an embodiment of the present application.

[0029] Figure 2 It is a schematic diagram of the internal structure of the screening box used in the embodiment of the present application.

[0030] Figure 3 yes Figure 1 Enlarged schematic diagram of part A in the middle.

[0031] Figure 4 yes Figure 2 Enlarged schematic diagram of part B in the middle.

[0032] Figure 5 It is a schematic diagram of the embodiment of the present application used to illustrate the state when the sliding cylinder drives the flow plate to stagger the grid plate.

[0033] Figure 6 yes Figure 2 Enlarged schematic diagram of part C in the middle.

[0034] Description of reference numerals:

[0035] 1. Screening box; 10. Feed inlet; 11. Air inlet; 111. Filter; 12. Air outlet pipe; 13. Discharge port; 14. Socket; 2. Vibrating screen; 21. Discharge pipe for fine materials; 3. Impact rod; 31. Speed ​​reducer motor; 4. Flow plate; 40. Connecting block; 41. Discharge gap; 42. Grid plate; 5. Sliding cylinder; 6. Annular rubber airbag. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-6 This application is described in further detail.

[0037] The present application discloses a material discharging and screening device for a rotary vibrating screen, referring to Figure 1 and Figure 2 , including a screening box 1; a feed port 10 and an air inlet 11 are respectively opened on opposite sides of the screening box 1, and the feed port 10 is connected with a fine material discharge pipe 21 of a rotary vibration screen 2 used in conjunction with a discharge screening device; the top of the screening box 1 is connected to an air outlet pipe 12, and an exhaust fan (not shown in the figure) is installed at one end of the air outlet pipe 12 away from the screening box 1; the bottom opening of the screening box 1 is arranged to form a discharge port 13.

[0038] When the discharging screening device is actually in operation, the exhaust fan is connected to the vibrating screen, and the external air is drawn into the screening box 1 by the exhaust fan and discharged through the air outlet 12 at the top of the screening box 1, so as to form an upward airflow in the screening box 1; when the soybeans discharged from the fine material discharge pipe 21 of the vibrating screen 2 fall into the screening box 1 through the feed port 10, light impurities such as dust and broken bean shells are carried out to the air outlet 12 through the rising air flow in the screening box 1 and finally discharged into the vibrating screen; and the soybeans slide downward by their own gravity and are finally discharged through the discharge port 13, thereby realizing the effective separation of the soybeans and light impurities.

[0039] In this embodiment, two air inlets 11 are provided; filter screens 111 are installed at each of the air inlets 11, and the filter screens 111 are fixed to the corresponding air inlets 11 by bolts. The filter screens 111 at the air inlet 11 are used to intercept dust and other impurities in the air entering the screening box 1 through the air inlet 11, thereby improving the cleanliness of the rising air flow in the screening box 1 and reducing the amount of external impurities entering the screening box 1, which may cause the subsequent contamination of the soybeans in the screening box 1.

[0040] The inner cavity of the screening box 1 is also supported with a dispersion component, which is arranged below the feed inlet 10 and above the air inlet 11. The dispersion component includes a plurality of impact rods 3 horizontally supported in the screening box 1; the upper and lower impact rods 3 are staggered.

[0041] Reference Figure 2 and Figure 3Several supports are provided on the outside of the screening box 1 corresponding to the several impact rods 3; one end of the impact rod 3 is penetrated through the screening box 1 and is rotatably connected to the corresponding support through a bearing, and a rotary driving member for driving the impact rod 3 to rotate is provided on the support; specifically, the rotary driving member is a reduction motor 31, and the output shaft of the reduction motor 31 is connected to the corresponding impact rod 3 through a coupling, so that the rotary driving member is driven and connected to the corresponding impact rod 3.

[0042] By setting the dispersion component, when the fine material discharge pipe 21 of the subsequent rotary vibrating screen passes the soybeans with light impurities to be separated into the screening box 1, the corresponding impact rod 3 is driven to rotate by the rotary drive member, and the subsequent falling materials rotate with the rotating impact rod 3, and the rotating impact rod 3 is used to break up some of the light impurities adhering to the soybeans, so as to facilitate better separation of the light impurities from the soybeans, and then facilitate the rising airflow to better carry the light impurities out of the screening box 1. The impact rod 3 is driven to rotate by the rotary drive member. On the one hand, it is beneficial to use the rotation of the impact rod 3 to buffer the impact of the continuously falling soybeans on the impact rod 3, reduce the wear of the soybeans on the impact rod 3, and extend the service life of the impact rod 3; on the other hand, the rotation of the impact rod 3 can change the force and angle of the soybean collision, so as to facilitate better separation of the light materials adhering to the soybeans from the soybeans.

[0043] Reference Figure 2 and Figure 4 , an inclined flow plate 4 is supported at the discharge port 13, and a discharge gap 41 is left between the inclined lower end of the flow plate 4 and the inner wall of the screening box 1, and the discharge gap 41 is set away from the air inlet 11. Through the setting of the flow plate 4, on the one hand, the subsequent falling soybeans can fall into the flow plate 4, flow to the discharge gap 41 through the flow plate 4 and be discharged, and the flow plate 4 is used to guide the material, so that the soybeans can be discharged smoothly from the discharge port 13. On the other hand, it effectively reduces the situation that the air that enters the screening box 1 through the air inlet 11 and flows out through the discharge port 13, which is convenient for the formation of the rising airflow of the screening box 1.

[0044] A grid plate 42 is also supported in the screening box 1, and the lower surface of the grid plate 42 is in contact with the upper surface of the flow plate 4. The grid plate 42 and the flow plate 4 form a plurality of buffer grooves, and the subsequently falling soybeans can be accumulated in the buffer grooves, thereby forming a protective layer covering the flow plate 4 on the surface of the flow plate 4, limiting the subsequently falling soybeans from directly impacting and contacting the flow plate 4, which is beneficial to reducing the impact wear of the falling soybeans on the flow plate 4 and extending the service life of the flow plate 4.

[0045] The periphery of the grid plate 42 is welded and fixed to the inner cavity of the screening box 1. The flow plate 4 can slide along its own inclination direction. The inclined upper end of the flow plate 4 is penetrated to the outside of the screening box 1, and a socket 14 for plugging the flow plate 4 is provided on the outside of the screening box 1. The screening box 1 is also provided with a sliding drive member for driving the flow plate 4 to slide along its own inclination direction. Specifically, the sliding drive member includes two sliding cylinders 5, and the two sliding cylinders 5 are respectively installed on opposite sides of the screening box 1, and the sliding cylinders 5 and the socket 14 are located on adjacent side walls of the screening box 1. The length direction of the sliding cylinder 5 is arranged parallel to the inclination direction of the flow plate 4. Two connecting blocks 40 are welded to the inclined upper end of the flow plate 4 corresponding to the two sliding cylinders 5; the piston rod ends of the sliding cylinders 5 are fixed to the corresponding connecting blocks 40.

[0046] Through the above arrangement, the two sliding cylinders 5 can subsequently drive the piston rod to extend and retract, thereby driving the flow plate 4 to slide along its own inclined direction. The sliding of the flow plate 4 can be used to adjust the discharge gap 41, which is convenient for the screening box 1 to control the discharge speed and discharge amount of soybeans.

[0047] Reference Figure 3 and Figure 5 When the fine material discharge pipe 21 of the rotary vibrating screen 2 stops dropping materials, the two sliding cylinders 5 drive the flow plate 4 to slide and extend out of the screening box 1 until the flow plate 4 and the grid plate 42 are offset, so that the soybeans originally stored in the buffer tank automatically fall down and are discharged from the discharge port 13, thereby realizing automatic cleaning of the soybeans in the buffer tank and reducing the situation in which the soybeans that fall subsequently are contaminated due to the long-term accumulation of soybeans in the buffer tank and causing mildew.

[0048] Reference Figure 2 and Figure 6 , the fine material discharge pipe 21 of the rotary vibrating screen is arranged through the feed port 10 and extends into the inner cavity of the screening box 1. A gap is left between the outer periphery of the fine material discharge pipe 21 and the inner periphery of the feed port 10. An annular rubber airbag 6 is arranged around the inner periphery of the feed port 10. The outer periphery of the annular rubber airbag 6 is fixed to the inner periphery of the feed port 10, and the inner periphery of the annular rubber airbag 6 abuts against the outer periphery of the fine material discharge pipe 21. Through the above arrangement, when the subsequent rotary vibrating screen drives the fine material discharge pipe 21 to vibrate, the annular rubber airbag 6 can relax and deform accordingly; on the one hand, a soft connection between the fine material discharge pipe 21 and the feed port 10 of the screening box 1 is realized, effectively reducing the impact of the rotary vibrating screen on the screening box 1 during vibration; on the other hand, the annular rubber airbag 6 can be used to block the gap between the feed port 10 and the fine material discharge pipe 21, thereby effectively limiting external debris from entering the screening box 1 through the gap between the feed port 10 and the fine material discharge pipe 21, causing the material in the screening box 1 to be contaminated.

[0049] In other embodiments, the annular rubber airbag 6 can be replaced with a silicone tube. Specifically, one end of the silicone tube is fixed on the feed port 10, and the other end of the silicone tube is tied and fixed to the outer periphery of the discharge pipe of the vibrating screen. Similarly, the fine material discharge pipe 21 and the feed port 10 can be softly connected, thereby limiting external debris from entering the inner cavity of the screening box 1 through the gap between the fine material discharge pipe 21 and the feed port 10.

[0050] The implementation principle of the embodiment of the present application is that the outside air is drawn into the screening box 1 through the air inlet 11 of the screening box 1 by an exhaust fan and is drawn out through the air outlet pipe 12 on the top of the screening box 1 to form an upward airflow in the screening box 1. After the soybeans from the fine material discharge pipe 21 of the rotary vibrating screen 2 flow into the screening box 1 through the feed port 10, the light impurities and the like are carried away from the screening box 1 upward by the upward airflow, and the remaining soybeans continue to fall and finally flow out of the discharge port 13 through the flow plate 4, thereby realizing effective separation of the soybeans and light impurities, making the separation of the soybeans and light impurities simpler and more convenient.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A discharging screening device for a rotary vibrating screen, characterized in that: The invention comprises a screening box (1), wherein the outer side of the screening box (1) is provided with a feed inlet (10) and an air inlet (11), wherein the feed inlet (10) is arranged higher than the air inlet (11); the feed inlet (10) is connected to a fine material discharge pipe (21) of a rotary vibrating screen (2) used in conjunction with a discharge screening device; the top of the screening box (1) is connected to an air outlet pipe (12), and an exhaust fan is installed at one end of the air outlet pipe (12) away from the screening box (1); the bottom of the screening box (1) is opened to form a discharge port (13), and a material flow plate (4) is also supported at the discharge port (13); the material flow plate (4) is arranged obliquely, and a discharge gap (41) is left between the inclined lower end of the material flow plate (4) and the inner cavity wall of the screening box (1); The flow plate (4) is also provided with a grid plate (42), and the lower surface of the grid plate (42) is arranged in contact with the upper surface of the flow plate (4); The grid plate (42) is fixed in the screening box (1), and the screening box (1) is provided with a sliding drive member corresponding to the flow plate (4), and the sliding drive member is drivingly connected to the flow plate (4) and is used to drive the flow plate (4) to slide along its own inclination direction; When the fine material discharge pipe (21) of the rotary vibrating screen (2) used in conjunction with the discharge screening equipment stops dropping materials, the sliding drive member drives the flow plate (4) to slide until the flow plate (4) is offset from the grid plate (42).

2. The discharging and screening device of a rotary vibrating screen according to claim 1, characterized in that: The inner cavity of the screening box (1) is also provided with a dispersion component, and the dispersion component comprises a plurality of impact rods (3) horizontally supported in the inner cavity of the screening box (1).

3. The discharging and screening device of a rotary vibrating screen according to claim 2, characterized in that: The screening box (1) is provided with a plurality of rotary drive members corresponding to the plurality of impact rods (3), and the rotary drive members are drivingly connected to the corresponding impact rods (3) for driving the corresponding impact rods (3) to rotate.

4. The discharging and screening device of a rotary vibrating screen according to claim 1, characterized in that: The fine material discharge pipe (21) of the rotary vibrating screen (2) penetrates into the screening box (1) through the feed port (10), and a gap is left between the inner periphery of the feed port (10) and the outer periphery of the fine material discharge pipe (21); an annular rubber airbag (6) is arranged around the feed port (10), and the inner periphery of the annular rubber airbag (6) is arranged in contact with the outer periphery of the fine material discharge pipe (21).

5. The discharging and screening device of a rotary vibrating screen according to claim 4, characterized in that: A filter screen (111) is also provided at the air inlet (11), and the filter screen (111) is provided to cover the air inlet (11).

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