Grain rotary vibration sieve

Abstract

The utility model discloses a grain rotary vibrating screen, which belongs to the technical field of grain screening and comprises a rotary screen main body, the interior of the rotary screen main body is hollow, the top of the rotary screen main body is open, a rotary screen top cover is fixed at the top of the rotary screen main body, a vibrating filter plate is arranged on one side of the inner circumference of the rotary screen main body, and the vibrating filter plate is in up-and-down limited sliding connection. A vibrating piece is installed at the bottom of the vibrating filter plate, a dust hood for sucking impurities is arranged in the upward direction of the vibrating filter plate, an outer pipe is obliquely arranged on the inner circumference of the rotary screen body, the upper end of the outer pipe is located above the top of the vibrating filter plate, and a center rod is arranged in the center of the outer pipe; and a spiral sheet for spirally conveying grains at the bottom is fixed on the periphery of the central rod. According to the grain rotary vibration screen, impurities can be screened through vibration and winnowing, and compared with the prior art, the internal circulation effect is achieved through cooperation of the spiral components, and the impurity screening effect is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of grain screening, in particular to a grain whirling vibration screen. Background Art

[0002] When grain is put into storage, due to impurities (such as straw) and dust in the grain, if the impurities are put into storage with the grain, it will cause the grain to heat and mildew, and also make the outflow of the grain during storage unsmooth, resulting in serious loss of grain and reduction of the storage efficiency. Therefore, before storage, the grain must be preliminarily cleaned to screen out impurities and part of the dust in the grain. At present, a whirling vibration screen is usually used for the preliminary cleaning of grain. This kind of screen surface is often used for the classification and impurity removal of powder materials and granular materials, and has a good impurity removal effect in the cleaning operation. It is found in the use of the existing whirling vibration screen that the grain material enters the upper sieve grid in the sieve box from the feeding and material leveling device above the whirling vibration screen, and various impurities in the grain material also enter the upper sieve grid in the sieve box. The large and light impurities in the impurities are easy to block the sieve holes of the upper sieve grid, seriously affecting the output of the whirling vibration screen.

[0003] A circulating air separation and impurity removal device of a whirling vibration screen with the publication number of CN221017392U is arranged on the sieve box of the whirling vibration screen and communicated with the feeding and material leveling device of the whirling vibration screen. During the falling process of the grain material along the feeding and material leveling device, the light impurities in the grain material are sucked away by using the circulating air separation principle, preventing the light impurities in the grain material from entering the sieve box, effectively avoiding the blockage of the mesh holes of the upper sieve grid in the sieve box by the large light impurities, and also effectively avoiding the excessive thickness of the material layer on the second-layer sieve grid caused by the entry of small light impurities into the second-layer sieve grid, thus effectively improving the screening efficiency of the whirling vibration screen and enhancing the screening and cleaning effect. However, for this point, the present application proposes another way to improve the impurity screening effect. The existing devices can only achieve impurity removal once and cannot achieve circulation. Therefore, a new type of whirling vibration screen is designed for this point. Content of the Utility Model

[0004] The purpose of the utility model is to provide a grain whirling vibration screen to solve the problems put forward in the background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a grain whirling vibration screen, including a whirling screen main body, the inside of the whirling screen main body is hollow and the top is open, and a whirling screen top cover is fixed on the top of the whirling screen main body. One side of the inner circumference of the whirling screen main body is provided with a vibration and filtering plate, and the vibration and filtering plate is connected in a limit sliding manner with upper and lower limits. A vibration member is installed at the bottom of the vibration and filtering plate, and a dust suction hood for sucking impurities is arranged in the upward direction of the vibration and filtering plate. The outer tube is inclinedly arranged on the inner circumference of the whirling screen main body, and the upper end of the outer tube is located above the top of the vibration and filtering plate. A central rod is arranged at the center of the outer tube, and a spiral blade for swirling and conveying the bottom grain is fixed on the outer circumference of the central rod.

[0006] In a further embodiment, the vibration filtering plate is inclined, and a straight baffle for restricting the falling point of the grain is arranged above the vibration filtering plate.

[0007] In a further embodiment, an air pump is installed on one side of the rotary sieve body, and an air duct penetrating the rotary sieve body is connected to the air outlet end of the air pump.

[0008] In a further embodiment, one end of the air duct is connected with an air hood, and the air hood is located at a position parallel to the bottom of the vibration filtering plate.

[0009] In a further embodiment, sliding blocks are fixed on the side of the vibration filtering plate, and sliding grooves corresponding to the sliding blocks are arranged on the inner wall of the rotary sieve body.

[0010] In a further embodiment, a vibration spring for improving the resilience is arranged between the inner circumference of the sliding groove and the sliding block.

[0011] In a further embodiment, a rotating motor is installed at the bottom of the rotary sieve body, and the driving end of the rotating motor is connected to the bottom end of the central rod through a coupling.

[0012] In a further embodiment, a recycling box is installed on the outside of the rotary sieve body, and a dust suction pipe is connected between the recycling box and the dust suction hood.

[0013] In a further embodiment, a suction device is arranged at the end of the dust suction pipe, and a drawer is inserted into the suction device.

[0014] In a further embodiment, a feeding part and a discharge plate are respectively arranged on the top of the rotary sieve top cover and the rotary sieve body.

[0015] Compared with the prior art, the technical effects and advantages of the present utility model are as follows:

[0016] Due to the inclined design of the vibration filtering plate and the restriction of the straight baffle, the grain will fall from the high-end side and then slide down gradually, ensuring the contact time between the grain and the vibration filtering plate. The design of the limit sliding between the vibration filtering plate and the rotary sieve body and the action of the vibration part at the bottom of the vibration filtering plate will vibrate the grain when the corresponding part operates. Combined with the operation of the air pump and the corresponding position setting of the air hood and the vibration filtering plate, the impurities in the grain will be blown and float;

[0017] The mortise insertion of the recycling box and the drawer and the corresponding position above the dust suction hood and the vibration filtering plate, combined with the connection of the dust suction pipe to the recycling box and the dust suction hood, and further through the operation of the suction device, can further suck and centrally process the impurities;

[0018] The inclined design of the outer tube and the arrangement of one end of the outer tube at the vibration filtering plate, through the design of the central rod inside the outer tube and the action of the spiral sheet on the outer periphery of the central rod, and further through the fixation of the driving end of the rotating motor to the end of the central rod, can further convey the grains at the bottom above the vibration filtering plate to achieve cyclic processing. Thus, the effect of impurity screening can be greatly improved.

[0019] This grain rotary vibrating screen can achieve impurity screening through vibration and air separation. Different from the existing ones, this device realizes the internal cyclic function through the cooperation of spiral components, greatly improving the effect of impurity screening. Brief Description of the Drawings

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of the present invention;

[0022] Figure 2 It is a central cross-sectional view of the present invention;

[0023] Figure 3 For the Figure 2 schematic structural diagram of the vibration part in the present invention;

[0024] Figure 4 For the Figure 2 schematic structural diagram of the rotary conveying part in the present invention.

[0025] Explanation of the Reference Numerals in the Drawings:

[0026] 1. Rotary screen main body; 2. Rotary screen top cover; 3. Vibration filtering plate; 4. Vibration part; 5. Vibration spring; 6. Straight baffle; 7. Air pump; 8. Air guide pipe; 9. Air hood; 10. Dust suction hood; 11. Dust suction pipe; 12. Recycling box; 13. Suction device; 14. Drawer; 15. Outer tube; 16. Central rod; 17. Spiral sheet; 18. Rotating motor; 19. Discharge plate. Detailed Embodiments

[0027] In the following description, a large number of specific details are given to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, some well-known technical features are not described to avoid confusion with the present invention.

[0028] Unless otherwise specified, the directions such as up, down, left, right, front, back, inside and outside involved in this article are based on the up, down, left, right, front, back, inside and outside directions in the figures shown by the present utility model. This is hereby explained together.

[0029] The connection method can adopt existing methods such as bonding, welding, bolt connection, etc., subject to actual needs.

[0030] In the process of using the existing vibratory screen, it is found that the grain material enters the upper sieve grid in the sieve box from the feeding and material leveling device above the vibratory screen. All kinds of impurities in the grain material also enter the upper sieve grid in the sieve box. The large and light impurities in the impurities are easy to block the sieve holes of the upper sieve grid. Moreover, most of the existing grain impurity screening is realized by air separation on one side when passing through. It only has one impurity screening process. If it needs to be repeated, it is necessary to take out the grain and then repeat the operation, which is not conducive to use. In view of this, a kind of impurity screening device that can automatically circulate is designed, and the specific structure is as follows.

[0031] Please refer to Figures 1 to 4 , this grain vibratory screen includes a rotary screen main body 1 and a rotary screen top cover 2. For the rotary screen main body 1, a plurality of support legs are installed at the bottom of the rotary screen main body 1. The bottom of the support legs is fixed to the ground through a grounding piece. The inside of the rotary screen main body 1 is hollow and the top is open. The opening is fixed to the rotary screen top cover 2 through bolts. A feeding part is arranged on one side of the top of the rotary screen top cover 2. An outlet plate 19 is arranged on one side of the rotary screen main body 1. The outlet plate 19 can be fixed through bolts or buckles. In order to facilitate discharging, the inner bottom of the rotary screen main body 1 is designed to be inclined.

[0032] Please refer to Figures 2 to 3 , in order to realize the vibrating screen, a straight baffle 6 is connected to the bottom position of the rotary screen top cover 2 near the feeding part. A vibrating and filtering plate 3 is arranged on one side of the inner circumference of the rotary screen main body 1 close to the straight baffle 6. The vibrating and filtering plate 3 is designed with a mesh structure. The vibrating and filtering plate 3 is connected in a limited sliding manner up and down. A sliding block is fixed to the side of the vibrating and filtering plate 3. A sliding groove corresponding to the sliding block is opened on the inner wall of the rotary screen main body 1. The up and down limited sliding can be realized through the cooperation of the sliding groove and the sliding block;

[0033] To further assist in vibrating and filtering impurities, the vibrating and filtering plate 3 is arranged obliquely, and the straight baffle 6 is near the high-end side of the vibrating and filtering plate 3, so as to play a role in restricting the falling point of the grain;

[0034] A vibration spring 5 for improving the resilience is arranged between the inner circumference of the sliding groove and the sliding block. The vibration spring 5 has an elastic restoring force. A vibrating part 4 is installed at the bottom of the vibrating and filtering plate 3. The vibrating part 4 can be components such as an exciter or a vibrating motor;

[0035] On the upward direction of the vibration filter plate 3, there is a dust suction hood 10 for sucking impurities. A recycling box 12 is installed outside the rotary sieve main body 1. The recycling box 12 is connected with a dust suction pipe 11. The other end of the dust suction pipe 11 penetrates through the rotary sieve main body 1 and is connected with the dust suction hood 10. At one end position of the dust suction pipe 11, there is a suction device 13. The suction device 13 can be a blower or a suction fan, etc. A drawer 14 is inserted and installed inside the suction device 13. By pulling out the drawer 14, it is convenient to take out and process the impurities;

[0036] In order to further assist in screening impurities, an air pump 7 is installed on one side of the rotary sieve main body 1. The air outlet end of the air pump 7 is connected with an air guide pipe 8 that penetrates through the rotary sieve main body 1. One end of the air guide pipe 8 is connected with an air hood 9. The air hood 9 is at a position corresponding to and parallel to the bottom of the vibration filter plate 3. When the air pump 7 operates, the air hood 9 will blow out air upward, further assisting the impurities to float and improving the impurity removal effect.

[0037] Please refer to Figure 2 and Figure 4 To achieve cyclic screening of impurities, an outer pipe 15 is inclinedly arranged on the inner circumference of the rotary sieve main body 1. The outer pipe 15 is fixed by brackets or connecting rods. The upper end of the outer pipe 15 is at a position above the top of the vibration filter plate 3. Thus, when the end of the outer pipe 15 conveys, the grains will fall to the top of the vibration filter plate 3 and the screening of impurities will be repeated again;

[0038] A central rod 16 is arranged at the center of the outer pipe 15. A spiral blade 17 for rotating and conveying the grains at the bottom is fixed on the outer circumference of the central rod 16. The outer circumference of the spiral blade 17 is adapted to the inner circumference of the outer pipe 15, thus forming a conveying structure for screw feeding;

[0039] A rotary motor 18 is installed at the bottom of the rotary sieve main body 1. The rotary motor 18 can be installed in an embedded manner. The driving end of the rotary motor 18 is connected with the bottom end of the central rod 16 through a coupling. When the rotary motor 18 operates, it can drive the central rod 16 to rotate, thereby driving the spiral blade 17 to rotate.

[0040] The above components and electrical equipment are all existing technologies or technologies that can be realized currently. Their working principles, dimensions and models have nothing to do with the functions of this application, so no more description will be made, and they are all controlled by a remote control switch.

[0041] Working principle

[0042] For this grain rotary vibrating sieve, when it is needed to be used, the grains to be screened are input through the feeding part. The grains are restricted by the straight baffle 6, so that the grains fall to the high-end position of the vibration filter plate 3;

[0043] At the same time, start the vibrating part 4 to drive the vibration filter plate 3 to vibrate. Cooperating with the elastic restoring force of the vibration spring 5, it vibrates reciprocally. The operation of the air pump 7 drives the air to be conveyed upward from the air hood 9 to blow the grains, and the impurities can be blown to float;

[0044] The operation of the suction device 13 sucks the floating impurities and concentrates them for collection inside the recycling bin 12;

[0045] When the grains fall to a certain height at the bottom, the rotating motor 18 is started to drive the central rod 16 to rotate, causing the spiral blade 17 to rotate, further achieving the purpose of augering and conveying the grains at the bottom back to the vibration filtering plate 3, so that impurity screening can be carried out again. This process is repeated to further achieve circulation.

[0046] It should be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0047] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grain rotary vibrating screen, comprising a rotary screen body (1), wherein the interior of the rotary screen body (1) is hollow and the top is open, and a rotary screen top cover (2) is fixed to the top of the rotary screen body (1); Features: A vibration filter plate (3) is arranged on one side of the inner periphery of the rotary screen body (1), and the vibration filter plate (3) is in a limit sliding connection with upper and lower limits. A vibration member (4) is installed at the bottom of the vibration filter plate (3), and a dust hood (10) for sucking impurities is arranged upward on the vibration filter plate (3). An outer tube (15) is arranged obliquely on the inner periphery of the rotary screen body (1), and the upper end of the outer tube (15) is located above the top of the vibration filter plate (3). A center rod (16) is arranged at the center of the outer tube (15), and a spiral sheet (17) for rotating and conveying bottom grain is fixed on the outer periphery of the center rod (16).

2. The grain rotary vibrating screen according to claim 1, characterized in that: The vibration filter plate (3) is arranged in an inclined manner, and a straight baffle plate (6) is arranged above the vibration filter plate (3) to limit the falling point of grain.

3. The grain rotary vibrating screen according to claim 1, characterized in that: An air pump (7) is installed on one side of the rotary screen body (1), and an air outlet end of the air pump (7) is connected to an air guide pipe (8) that passes through the rotary screen body (1).

4. The grain rotary vibrating screen according to claim 3, characterized in that: One end of the air guide pipe (8) is connected to an air hood (9), and the air hood (9) is located at a position corresponding to and parallel to the bottom of the vibration filter plate (3).

5. The grain rotary vibrating screen according to claim 1, characterized in that: A sliding block is fixed to the side of the vibration filter plate (3), and a sliding groove corresponding to the sliding block is provided on the inner wall of the rotary screen body (1).

6. The grain rotary vibrating screen according to claim 5, characterized in that: A vibration spring (5) for increasing the rebound force is arranged between the inner periphery of the sliding groove and the sliding block.

7. The grain rotary vibrating screen according to claim 1, characterized in that: A rotary motor (18) is installed at the bottom of the rotary screen body (1), and the driving end of the rotary motor (18) is connected to the bottom end of the center rod (16) through a coupling.

8. The grain rotary vibrating screen according to claim 7, characterized in that: A recovery box (12) is installed on the outside of the rotary screen body (1), and a dust collection pipe (11) is connected between the recovery box (12) and the dust collection hood (10).

9. The grain rotary vibrating screen according to claim 8, characterized in that: A suction device (13) is provided at the end of the dust suction pipe (11), and a drawer (14) is inserted and pulled inside the suction device (13).

10. The grain rotary vibrating screen according to any one of claims 1 to 9, characterized in that: A feeding portion and a discharging plate (19) are respectively arranged on the top of the rotary screen cover (2) and the rotary screen body (1).

Images