An efficient sieving device for flour processing

Abstract

The present invention discloses an efficient screening device for flour processing, which includes a housing, a support device, and a plurality of flour screening devices. The housing is connected with a feed pipe, a first discharge pipe, and a second discharge pipe. The plurality of flour screening devices are divided into a currently used screening device and a standby screening device. In the screening device of this application, the currently used screening device is vibrated by a vibration generating unit, so that the sieve mesh vibrates to screen the flour, and thus the screening effect is good. A standby screening device is provided, so that it can be quickly replaced after the sieve mesh of the currently used screening device is blocked, making the screening more efficient.

Description

Technical Field

[0001] The present invention belongs to the technical field of flour processing, and particularly relates to an efficient sieving device for flour processing. Background Art

[0002] With the rapid development of the national economy, people's living standards have gradually improved. Flour has now become the most commonly used food ingredient in every household. When flour is produced and processed, it needs to be sieved through a sieving device so that impurities or coarse flour in the flour can be sieved out. In this way, the sieved flour is cleaner and finer, and the noodles made therefrom have a better taste and are more delicious.

[0003] There is a currently authorized disclosure number CN105013699A for a new type of sieving device. The adjustment chain and the clip cooperate to fix the two bottom corners of the flour bag, thereby preventing the flour bag from slipping. Through the cooperation of the forward and reverse motor No. 1 and the belt No. 1, the lifting of the support plate is controlled, thereby reducing the impact of dust on the staff. However, the sieving speed of this sieving device is still relatively slow, affecting the sieving work efficiency. Moreover, after the sieving device has been used for a long time, the sieve holes in the sieving part are easily blocked by impurities, resulting in a deteriorated sieving effect. At the same time, the sieve surface of the sieve is not convenient for disassembly and cleaning, resulting in flour accumulating in the sieve frame and affecting the normal use of the sieving device. Summary of the Invention

[0004] The present invention aims to overcome the defects of the prior art, and provides an efficient sieving device for flour processing.

[0005] To achieve the above object, the present invention provides the following technical solution: A sieving device for flour processing, including a housing, a support device, and a plurality of sieving devices. The housing is connected with a feed pipe, a first discharge pipe, and a second discharge pipe. The plurality of sieving devices are divided into a sieving device in use, i.e., the actively used sieving device, and a standby sieving device.

[0006] Further, the housing includes a top cylinder, an intermediate cylinder connected to the top cylinder through an upper circular plate, and a bottom cylinder connected to the intermediate cylinder through a lower circular plate. The top cylinder, the intermediate cylinder, and the bottom cylinder are all circular cylinders, and the top and bottom ends of the top cylinder, the intermediate cylinder, and the bottom cylinder are all open. A top cover is installed at the top cylinder above the top cylinder, a bottom cover is installed at the bottom cylinder below the bottom cylinder, a side box is connected to the bottom cylinder, a side door is installed at the side box, the feed pipe is connected to the intermediate cylinder, the first discharge pipe is connected to the side door, and the second discharge pipe is connected to the intermediate cylinder.

[0007] Thus, the first discharge pipe is convenient for collecting flour, and the second discharge pipe is convenient for collecting the sieved impurities.

[0008] Further, the number of the spare powder screening devices is greater than or equal to 2. There are multiple spare installation positions at the middle cylinder body. One of the spare powder screening devices can be installed at each spare installation position. There are more than two telescopic cylinders at each spare installation position. The end of the telescopic cylinder abuts against the spare powder screening device to fix the spare powder screening device, so that the spare powder screening device will not fall off.

[0009] Thus, the spare installation position facilitates the installation of the spare powder screening device, and the spare powder screening device is fixed by the end of the telescopic cylinder abutting against it.

[0010] Further, the powder screening device includes a first ring, a second ring connected to the first ring through an annular flexible cloth, a screen fixedly installed at the second ring, an inverted frustum-shaped guiding plate connected to the second ring, and an annular support plate fixedly connected to the inverted frustum-shaped guiding plate. A plurality of support springs are connected between the first ring and the second ring. There are a plurality of first arc-shaped grooves at the first ring. There are a plurality of second arc-shaped grooves at the second ring. There are a plurality of notches at the support plate. A plurality of iron blocks are fixedly connected to the lower surface of the inverted frustum-shaped guiding plate. The numbers of the first arc-shaped grooves, the second arc-shaped grooves, the notches, and the iron blocks are equal, and there is one of the iron blocks at each notch.

[0011] Further, the screen is circular, and the center of the screen is higher than the circumference of the screen.

[0012] Thus, the screen is somewhat similar to a spherical crown shape, so that sundries will transfer to the circumferential direction of the screen.

[0013] Further, there are a plurality of vertical arc-shaped grooves at the middle cylinder body; the supporting device includes a mounting ring plate, a rotating ring plate, and a plurality of bottom arc-shaped plates fixedly connected to the bottom cylinder body. A plurality of tension springs are connected between each bottom arc-shaped plate and the mounting ring plate. There is an annular chute at the mounting ring plate. There are a plurality of sliders at the rotating ring plate that cooperate with the annular chute. A bottom driving motor is installed at the mounting ring plate, and a bottom driving gear is installed at the bottom driving motor. An external tooth array that meshes with the bottom driving gear is provided at the outer circumference of the rotating ring plate. A plurality of internal tooth arrays are provided at the inner circumference of the rotating ring plate. A plurality of vibration generating units are installed at the mounting ring plate. A plurality of mounting seats are installed at the inner circumferential surface of the mounting ring plate. A rotating rod is installed at the mounting seat through a bottom bearing. A bottom passive gear that meshes with the internal tooth array is provided at the rotating rod. A cylindrical lower limit post that cooperates with the second arc-shaped groove is fixedly connected to the top end of the rotating rod. A bearing plate for supporting the second ring is fixedly connected to the lower limit post. An electromagnet unit is installed below the bearing plate.

[0014] Thus, the sieve net shakes under the action of the vibration generating unit to sieve the flour. The bearing plate is used to support the second ring of the flour sieving device. The electromagnet unit can adsorb the iron block at the bottom of the flour sieving device to adsorb the flour sieving device and prevent large displacement after shaking.

[0015] Further, a rotating shaft and a rotating shaft driving unit for driving the rotating shaft to rotate are installed at the side box. The rotating shaft is connected with a movable pipe through a connecting frame. One end of the movable pipe is connected with the first discharge pipe through a hose, and the other end is connected with a receiving hopper that can be located below the inverted frustum-shaped guiding plate.

[0016] Thus, the receiving hopper facilitates the receiving of the sieved flour; the receiving hopper can be rotated through the rotating shaft.

[0017] Further, the second discharge pipe is located above the flour sieving device in use.

[0018] Further, the first discharge pipe is connected with a first negative pressure air suction unit.

[0019] Further, the second discharge pipe is connected with a second negative pressure air suction unit.

[0020] Further, an adjusting device is further included. The adjusting device includes a fixed circular ring plate and a plurality of top arc-shaped plates fixedly connected to the top cylinder. The top arc-shaped plates and the fixed circular ring plate are connected through connecting plates. The fixed circular ring plate is connected with a lifting circular plate through an electric lifting rod. A plurality of cylindrical upper limit posts are installed at the lifting circular plate. The number of the vertical arc-shaped grooves, lower limit posts and upper limit posts is equal. A pull rope is connected between the corresponding upper limit post and lower limit post. The electric lifting rod can make the pull rope in a taut state and can also make the pull rope in a relaxed state.

[0021] When the pull rope is in a relaxed state, it is more convenient for vibration. When the pull rope is taut, it is convenient to replace the spare flour sieving device.

[0022] Further, the lifting circular plate and the upper limit post are connected through an upper bearing. A top passive gear is installed at the upper limit post. A top driving motor is installed at the lifting circular plate. A top driving gear meshing with all the top passive gears is installed at the top driving motor; an arc-shaped rubber pad is fixed at the bottom end of the upper limit post. A rubber pad receiving groove connected with the vertical arc-shaped groove is provided at the bottom end of the vertical arc-shaped groove; the first ring of the flour sieving device in use abuts against the rubber pads of all the upper limit posts, and the second ring of the flour sieving device in use abuts against the bearing plate.

[0023] The rubber pads abut against the first ring of the flour sieving device in use, so that the upper limit posts fix the first ring, and the bearing plate bears the flour sieving device in use.

[0024] Further, the number of the vertical arc surface grooves, the upper limit posts and the lower limit posts is 4 each, and they are evenly distributed in a ring at equal intervals.

[0025] Further, the top driving motor can drive all the upper limit posts to be in a tightened state and a non-tightened state. In the tightened state, all the rubber pads are in contact with the outer circumferential surface of the first ring of the sieving device in use. In the non-tightened state, all the rubber pads are received in the corresponding rubber pad receiving grooves.

[0026] Further, the bottom driving motor can drive all the lower limit posts to be in a bearing state and a non-bearing state. In the bearing state, all the bearing plates are in contact with the bottom of the second ring of the sieving device in use. In the non-bearing state, all the bearing plates are not in contact with the second ring of the sieving device in use.

[0027] Further, when all the upper limit posts are in the non-tightened state and all the lower limit posts are in the non-bearing state, the sieving device in use can fall downward.

[0028] Thus, it is convenient for the sieving device in use to fall due to its own gravity.

[0029] Further, there are a plurality of first through holes in the lifting circular plate, and a plurality of second through holes in the top driving gear; there are a plurality of hanging rings at the first ring of the sieving device.

[0030] Thus, it is convenient to use a lifting hook to lift the spare sieving device to the spare installation position.

[0031] Further, the number of the bottom arc panels is greater than or equal to 3 and they are evenly distributed in a ring at equal intervals; the number of the top arc panels is greater than or equal to 4 and they are evenly distributed in a ring at equal intervals; the number of the electric lifting rods is greater than or equal to 4 and they are evenly distributed in a ring at equal intervals.

[0032] Further, the number of notches and iron blocks of each sieving device is 4 each.

[0033] Further, the number of the internal tooth arrays is 4.

[0034] Further, a plurality of telescopic cylinders at each spare installation position are evenly distributed in a ring at equal intervals.

[0035] Further, the top cover and the top cylinder body are installed by means of a buckle.

[0036] Further, the bottom cover and the bottom cylinder body are installed by means of a buckle.

[0037] Further, the side door and the side box are installed by means of a buckle.

[0038] Thereby, it is convenient to open and close the top cover, bottom cover and side cover.

[0039] Furthermore, a plurality of spare mounting positions are distributed in a column.

[0040] Furthermore, the number of the spare sieving devices is 3; the number of the spare mounting positions is 3.

[0041] Furthermore, the external tooth array includes a plurality of externally teeth distributed in an arc.

[0042] Furthermore, the internal tooth array includes a plurality of internally teeth distributed in an arc.

[0043] Furthermore, the movable pipe is in an L shape.

[0044] Furthermore, the top end of the lower limit post has a chamfer.

[0045] Furthermore, the lifting ring is semicircular.

[0046] Furthermore, a plurality of support legs are fixedly connected to the bottom cylinder body.

[0047] Thereby, the whole sieving device can be stably supported.

[0048] Beneficial effects:

[0049] 1. For the sieving device of the present application, the vibrating generating unit vibrates the sieving device in use, so that the sieve mesh vibrates to sieve the flour, and thus the sieving effect is good.

[0050] 2. The spare sieving device is provided, so that it can be quickly replaced after the sieve mesh of the sieving device in use is blocked, and thus the sieving is more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a schematic diagram of the working state of the sieving device, at this time the pulling rope is in a relaxed state;

[0052] Figure 2 It is a schematic diagram after the upper limit post and the lower limit post rotate, at this time the material receiving hopper turns downward;

[0053] Figure 3 It is a schematic diagram of the sieving device in use falling;

[0054] Figure 4 It is a schematic diagram that the upper limit post and the lower limit post rotate again and the pulling rope is tightened, at this time a spare sieving device falls downward;

[0055] Figure 5 It is a schematic diagram that the spare sieving device falls to the designated position and becomes the sieving device in use.

[0056] Figure 6 Schematic diagram of the first perspective for component disassembly;

[0057] Figure 7 Enlarged view of area A;

[0058] Figure 8 Enlarged view of area B;

[0059] Figure 9 Schematic diagram of the second perspective for component disassembly;

[0060] Figure 10 Enlarged view of area C;

[0061] Figure 11 Enlarged view of area D;

[0062] Figure 12 Schematic diagram of the first perspective of the powder screening device;

[0063] Figure 13 Schematic diagram of the second perspective of the powder screening device;

[0064] For the sake of clear internal structure illustration, part of the top cylinder, middle cylinder and bottom cylinder are hidden.

[0065] Explanation of reference numerals:

[0066] 1 Top cylinder; 1.1 Top cover;

[0067] 2 Middle cylinder; 2.1 Feed pipe; 2.2 Second discharge pipe; 2.3 Telescopic cylinder; 2.4 Vertical arc groove; 2.4.1 Rubber pad receiving groove;

[0068] 3 Bottom cylinder; 3.1 Bottom cover;

[0069] 4 Side box; 4.1 Side door; 4.2 First discharge pipe; 4.3 Rotating shaft; 4.3.1 Connecting frame; 4.4 Movable pipe;

[0070] 5.1 Normal powder screening device; 5.2 Spare powder screening device; 5.3 First ring; 5.3.1 Annular flexible cloth; 5.3.2 First arc groove; 5.3.3 Suspension ring; 5.4 Second ring; 5.4.1 Second arc groove; 5.5 Sieve mesh; 5.6 Inverted frustum-shaped guiding plate; 5.6.1 Iron block; 5.6.2 Material receiving hopper; 5.7 Support plate; 5.8 Support spring;

[0071] 6.1 Installation ring plate; 6.1.1 Vibration generating unit; 6.2 Rotating ring plate; 6.2.1 Outer tooth array; 6.2.2 Inner tooth array; 6.3 Bottom arc panel; 6.4 Pulling spring; 6.5 Bottom driving gear; 6.6 Mounting seat; 6.7 Rotating rod; 6.8 Bottom driven gear; 6.9 Lower limit post; 6.9.1 Bearing plate; 6.9.2 Electromagnet unit;

[0072] 7.1 Fixed ring plate; 7.2 Top arc panel; 7.3 Electric lifting rod; 7.4 Lifting circular plate; 7.4.1 First through hole; 7.5 Upper limit post; 7.5.1 Pulling rope; 7.5.2 Rubber pad; 7.6 Top passive gear; 7.7 Top driving gear; 7.7.1 Second through hole. Detailed implementation manners

[0073] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0074] The present invention provides a highly efficient sieving device for flour processing as Figures 1-13 shown, including a housing, a support device, and a plurality of powder sieving devices. The housing is connected with a feed pipe 2.1, a first discharge pipe 4.2, and a second discharge pipe 2.2. The plurality of powder sieving devices are divided into a currently used sieving device 5.1 and a standby sieving device 5.2.

[0075] The housing includes a top cylinder 1, a middle cylinder 2 connected to the top cylinder 1 through an upper circular plate, and a bottom cylinder 3 connected to the middle cylinder 2 through a lower circular plate. The top cylinder 1, the middle cylinder 2, and the bottom cylinder 3 are all circular cylindrical, and the top and bottom ends of the top cylinder 1, the middle cylinder 2, and the bottom cylinder 3 are all open. A top cover 1.1 is installed above the top cylinder 1 at the top cylinder 1. A bottom cover 3.1 is installed below the bottom cylinder 3 at the bottom cylinder 3. A side box 4 is connected to the bottom cylinder 3, and a side door 4.1 is installed at the side box 4. The feed pipe 2.1 is connected to the middle cylinder 2, the first discharge pipe 4.2 is connected to the side door 4.1, and the second discharge pipe 2.2 is connected to the middle cylinder 2; the number of the spare sieving devices 5.2 is greater than or equal to 2. There are multiple spare installation positions at the middle cylinder 2, and each spare installation position can install one of the spare sieving devices 5.2. There are more than two telescopic cylinders 2.3 at each spare installation position. The end of the telescopic cylinder 2.3 abuts against the spare sieving device 5.2 to fix the spare sieving device 5.2 so that the spare sieving device 5.2 will not fall; the sieving device includes a first ring 5.3, a second ring 5.4 connected to the first ring 5.3 through an annular flexible cloth 5.3.1, a sieve mesh 5.5 fixedly installed at the second ring 5.4, an inverted frustum-shaped guiding plate 5.6 connected to the second ring 5.4, and a circular supporting plate 5.7 fixedly connected to the inverted frustum-shaped guiding plate 5.6. A plurality of supporting springs 5.8 are connected between the first ring 5.3 and the second ring 5.4. There are a plurality of first arc-shaped grooves 5.3.2 at the first ring 5.3, a plurality of second arc-shaped grooves 5.4.1 at the second ring 5.4, a plurality of notches at the supporting plate 5.7, and a plurality of iron blocks 5.6.1 fixedly connected to the lower surface of the inverted frustum-shaped guiding plate 5.6. The number of the first arc-shaped grooves 5.3.2, the second arc-shaped grooves 5.4.1, the notches, and the iron blocks 5.6.1 are all equal, and there is one of the iron blocks 5.6.1 at each notch.

[0076] The middle cylinder body 2 is provided with a plurality of vertical arc-shaped grooves 2.4; the supporting device includes a mounting ring plate 6.1, a rotating ring plate 6.2 and a plurality of bottom arc-shaped plates 6.3 fixedly connected to the bottom cylinder body 3. A plurality of tension springs 6.4 are connected between each bottom arc-shaped plate 6.3 and the mounting ring plate 6.1. The mounting ring plate 6.1 is provided with an annular chute, and the rotating ring plate 6.2 is provided with a plurality of sliders adapted to the annular chute. A bottom driving motor is installed on the mounting ring plate 6.1, and a bottom driving gear 6.5 is installed on the bottom driving motor. An external tooth array 6.2.1 meshing with the bottom driving gear 6.5 is provided on the outer circumference of the rotating ring plate 6.2, and a plurality of internal tooth arrays 6.2.2 are provided on the inner circumference of the rotating ring plate 6.2. A plurality of vibration generating units 6.1.1 are installed on the mounting ring plate 6.1. A plurality of mounting seats 6.6 are installed on the inner circumferential surface of the mounting ring plate 6.1. A rotating rod 6.7 is installed on the mounting seat 6.6 through a bottom bearing. A bottom driven gear 6.8 meshing with the internal tooth array 6.2.2 is provided on the rotating rod 6.7. A cylindrical lower limit post 6.9 adapted to the second arc-shaped groove 5.4.1 is fixedly connected to the top end of the rotating rod 6.7. A bearing plate 6.9.1 for supporting the second ring 5.4 is fixedly connected to the lower limit post 6.9. An electromagnet unit 6.9.2 is installed below the bearing plate 6.9.1; a rotating shaft 4.3 and a rotating shaft driving unit for driving the rotation of the rotating shaft are installed on the side box 4. The rotating shaft 4.3 is connected to a movable pipe 4.4 through a connecting frame 4.3.1. One end of the movable pipe 4.4 is connected to the first discharge pipe 4.2 through a hose, and the other end is connected to a receiving hopper 5.6.2 capable of being located below the inverted frustum-shaped guiding plate 5.6.

[0077] It further includes an adjusting device, and the adjusting device includes a fixed circular ring plate 7.1 and a plurality of top arc-shaped plates 7.2 fixedly connected to the top cylinder 1. The top arc-shaped plates 7.2 and the fixed circular ring plate 7.1 are connected by connecting plates. The fixed circular ring plate 7.1 is connected to a lifting circular plate 7.4 through an electric lifting rod 7.3. A plurality of cylindrical upper limit posts 7.5 are installed at the lifting circular plate 7.4. The number of the vertical arc-shaped grooves 2.4, the lower limit posts 6.9 and the upper limit posts 7.5 is equal. A pull rope 7.5.1 is connected between the corresponding upper limit post 7.5 and the lower limit post 6.9. The electric lifting rod 7.3 can make the pull rope 7.5.1 in a taut state and can also make the pull rope 7.5.1 in a relaxed state. The lifting circular plate 7.4 and the upper limit posts 7.5 are connected by upper bearings. A top passive gear 7.6 is installed at the upper limit post 7.5. A top driving motor is installed at the lifting circular plate 7.4, and a top driving gear 7.7 meshing with all the top passive gears 7.6 is installed at the top driving motor. An arc-shaped rubber pad 7.5.2 is fixed at the bottom end of the upper limit post 7.5. A rubber pad accommodating groove 2.4.1 connected to the vertical arc-shaped groove is provided at the bottom end of the vertical arc-shaped groove 2.4. The first circular ring 5.3 of the positive powder screening device 5.1 abuts against the rubber pads 7.5.2 of all the upper limit posts 7.5, and the second circular ring 5.4 of the positive powder screening device 5.1 abuts against the bearing plate 6.9.1. The number of the top arc-shaped plates 7.2 is greater than or equal to four and is evenly distributed at equal intervals in a ring shape. The number of the electric lifting rods 7.3 is greater than or equal to 4 and is evenly distributed at equal intervals in a ring shape.

[0078] The number of the vertical arc-shaped grooves 2.4, upper limit posts 7.5 and lower limit posts 6.9 is 4 each, and they are evenly distributed in a ring at equal intervals; the top drive motor can drive all the upper limit posts 7.5 to be in a tightened state and a non-tightened state. In the tightened state, all the rubber pads 7.5.2 are in contact with the outer circumferential surface of the first ring 5.3 of the sieving device in use 5.1. In the non-tightened state, all the rubber pads 7.5.2 are received in the corresponding rubber pad receiving grooves 2.4.1; the bottom drive motor can drive all the lower limit posts 6.9 to be in a bearing state and a non-bearing state. In the bearing state, all the bearing plates 6.9.1 are in contact with the bottom of the second ring 5.4 of the sieving device in use 5.1. In the non-bearing state, all the bearing plates 6.9.1 are not in contact with the second ring 5.4 of the sieving device in use 5.1; when all the upper limit posts 7.5 are in the non-tightened state and all the lower limit posts 6.9 are in the non-bearing state, the sieving device in use 5.1 can drop downward; there are a plurality of first through holes 7.4.1 at the lifting circular plate 7.4, and there are a plurality of second through holes 7.7.1 at the top drive gear 7.7; there are a plurality of hanging rings 5.3.3 at the first ring 5.3 of the sieving device; the number of the bottom arc-shaped plates 6.3 is greater than or equal to 3 and they are evenly distributed in a ring at equal intervals.

[0079] Working principle: For the sieving device of the present application, the sieving device in use is vibrated by the vibration generating unit, so that the sieve mesh vibrates to sieve the flour, and thus the sieving effect is good. And a spare sieving device is provided, so that it can be quickly replaced after the sieve mesh of the sieving device in use is blocked, and thus the sieving is more efficient.

[0080] The specific working process is as follows:

[0081] The flour to be sieved enters from the feed pipe and falls onto the sieve mesh. The sieving device in use vibrates under the vibration of the vibration generating unit. The fine flour sieved through the sieve mesh is received by the receiving hopper, and then discharged through the first discharge pipe by the first negative pressure air suction unit. The coarse flour or impurities remain on the sieve mesh. Since the center of the sieve mesh is higher than the circumference of the sieve mesh, the impurities will transfer to the circumferential direction of the sieve mesh. When accumulated to a certain height, they will fall from the second discharge pipe, or the feeding can be paused, and the impurities can be sucked away from the second discharge pipe by the second negative pressure air suction device.

[0082] In the normal working state, the pull rope is in a slack state, and there is an iron block at the bottom of the inverted frustum-shaped guide plate of the sieving device. Thus, it can be adsorbed by the electromagnet unit. The rubber pads are all in contact with the outer circumferential surface of the first ring of the sieving device in use, and all the bearing plates are in contact with the second ring of the sieving device in use. Thus, the vibration generating unit can vibrate the sieving device in use better, and the tension spring and the vibration spring provide enough vibration space.

[0083] After the sieving device in use has been used for a period of time, the sieve mesh will become clogged to a certain extent and needs to be replaced. At this time, it only needs to be replaced with a spare sieving device. The specific replacement steps are as follows:

[0084] Step 1, remove the sieving device in use:

[0085] Start the top drive motor so that the rubber pads at all the upper limit posts are received in the corresponding rubber pad receiving grooves. At this time, all the upper limit posts are in a non-compressing state. Then, cut off the power supply of the electromagnet unit and start the bottom drive motor so that all the bearing plates do not contact the second ring of the sieving device in use. At this time, all the lower limit posts are in a non-bearing state. At the same time, start the rotating shaft drive unit to drive the rotating shaft to rotate, and turn the material receiving hopper downward away from the inverted cone guide plate, so that the sieving device in use can fall off. When all the spare sieving devices are used up, open the bottom cover of the bottom cylinder to remove all the sieving devices for maintenance.

[0086] Step 2, use the spare sieving device:

[0087] Drive the electric lifting rod to rise until the pull rope is in a taut state, so that the axes of the upper limit post and the lower limit post are collinear. Start the top drive motor to drive the rubber pads at all the upper limit posts to rotate out of the corresponding rubber pad receiving grooves. At the same time, start the bottom drive motor to drive all the bearing plates to rotate under the spare sieving device, and turn on the electromagnet unit. Then, start the movable end of the telescopic cylinder corresponding to the lowermost spare sieving device to shrink to the shortest, and this spare sieving device will fall off and be used as the sieving device in use. At this time, all the rubber pads abut against the outer circumferential surface of the first ring of the falling sieving device, and all the bearing plates abut against the bottom of the second ring of this sieving device.

[0088] After the replacement is completed, drive the electric lifting rod to descend again so that the pull rope is in a slack state, and the whole device can continue to work normally.

[0089] In addition, in order to facilitate the installation of the spare sieving device, a plurality of lifting rings are provided at the first ring of the sieving device. Specifically, open the bottom cover and the top cover, install the spare sieving device from the bottom cylinder, then pass the lifting hook through the first through hole and the second through hole and let it fall, hook the lifting ring and lift it to the spare installation position, and start the movable end of the corresponding telescopic cylinder to extend to fix it.

[0090] Although the present invention has been illustrated and described with respect to the preferred embodiments, those skilled in the art should understand that various changes and modifications can be made to the present invention as long as they do not exceed the scope defined by the claims of the present invention.

Claims

1. An efficient screening device for flour processing, characterized in that, It includes a housing, a support device, an adjustment device, and a plurality of powder screening devices. The housing is connected with a feed pipe, a first discharge pipe, and a second discharge pipe. The plurality of powder screening devices are divided into the currently used active powder screening devices and the standby powder screening devices; the housing includes a top cylinder, an intermediate cylinder connected to the top cylinder through an upper annular plate, and a bottom cylinder connected to the intermediate cylinder through a lower annular plate; there are a plurality of standby installation positions at the intermediate cylinder, and one standby powder screening device can be installed at each standby installation position. There are more than two telescopic cylinders at each standby installation position; the powder screening device includes a first ring with a plurality of first arc-shaped grooves, a second ring with a plurality of second arc-shaped grooves connected to the first ring through an annular flexible cloth, a sieve mesh fixedly installed at the second ring, an inverted frustum-shaped guiding plate connected to the second ring, and a circular support plate with a plurality of notches fixedly connected to the inverted frustum-shaped guiding plate. There are a plurality of support springs connected between the first ring and the second ring. There are a plurality of iron blocks fixedly connected to the lower surface of the inverted frustum-shaped guiding plate, and there is an iron block at each notch; there are a plurality of vertical arc-shaped grooves at the intermediate cylinder; the support device includes a circular chute installation ring plate, a rotating ring plate with a plurality of sliders cooperating with the circular chute, and a plurality of bottom arc-shaped plates fixedly connected to the bottom cylinder. Each bottom arc-shaped plate and the installation ring plate are connected through a plurality of tension springs. A bottom drive motor with a bottom drive gear installed is installed at the installation ring plate. There is an external tooth array meshing with the bottom drive gear on the outer circumference of the rotating ring plate, and a plurality of internal tooth arrays on the inner circumference of the rotating ring plate. A plurality of vibration generating units are installed at the installation ring plate. A plurality of mounting seats are installed on the inner circumferential surface of the installation ring plate. The mounting seats are installed with rotating rods through bottom bearings. There is a bottom passive gear meshing with the internal tooth array on the rotating rod. The top end of the rotating rod is fixedly connected with a cylindrical lower limit post cooperating with the second arc-shaped groove. The lower limit post is fixedly connected with a bearing plate for supporting the second ring. An electromagnet unit is installed below the bearing plate; the adjustment device includes a fixed ring plate and a plurality of top arc-shaped plates fixedly connected to the top cylinder. The top arc-shaped plates and the fixed ring plate are connected through connecting plates. The fixed ring plate is connected with a lifting circular plate through an electric lifting rod. A plurality of cylindrical upper limit posts connected to the lifting circular plate through upper bearings are installed at the lifting circular plate. The number of vertical arc-shaped grooves, lower limit posts, and upper limit posts is equal. A pull rope is connected between the corresponding upper limit post and the lower limit post; a top passive gear is installed at the upper limit post. A top drive motor with a top drive gear meshing with all the top passive gears installed is installed at the lifting circular plate; an arc-shaped rubber pad is fixed at the bottom end of the upper limit post, and there is a rubber pad receiving groove connected to the vertical arc-shaped groove at the bottom end of the vertical arc-shaped groove.

2. The high-efficiency sieving device for flour processing according to claim 1, wherein The top cylinder, the middle cylinder, and the bottom cylinder are all circular cylindrical, and the top and bottom ends of the top cylinder, the middle cylinder, and the bottom cylinder are all open. A top cover is installed at the top cylinder above the top cylinder, a bottom cover is installed at the bottom cylinder below the bottom cylinder, a side box is connected to the bottom cylinder, a side door is installed at the side box, the feed pipe is connected to the middle cylinder, the first discharge pipe is connected to the side door, and the second discharge pipe is connected to the middle cylinder.

3. The high-efficiency screening device for flour processing according to claim 2, wherein, The number of the spare sieving devices is greater than or equal to 2. The end of the telescopic cylinder abuts against the spare sieving device to fix the spare sieving device so that the spare sieving device will not fall; the number of the first arc-shaped grooves, the second arc-shaped grooves, the notches, and the iron blocks are all equal.

4. The high-efficiency sieving device for flour processing according to claim 3, wherein, A rotating shaft and a rotating shaft driving unit for driving the rotating shaft to rotate are installed at the side box. The rotating shaft is connected with a movable pipe through a connecting frame. One end of the movable pipe is connected with the first discharge pipe through a hose, and the other end is connected with a receiving hopper that can be located below the inverted frustum-shaped guiding plate.

5. The high-efficiency sieving device for flour processing according to claim 4, characterized in that, The electric lifting rod can make the pull rope in a taut state and can also make the pull rope in a slack state; the first ring of the sieving device in use abuts against the rubber pads of all the upper limit posts, and the second ring of the sieving device in use abuts against the bearing plate.

6. The high-efficiency screening device for flour processing according to claim 5, characterized in that, The number of the vertical arc-shaped grooves, the upper limit posts, and the lower limit posts is 4 each and they are evenly distributed in a ring shape; the top driving motor can drive all the upper limit posts to be in a tightened state and a non-tightened state. In the tightened state, all the rubber pads abut against the outer circumferential surface of the first ring of the sieving device in use. In the non-tightened state, all the rubber pads are received in the corresponding rubber pad receiving grooves; The bottom driving motor can drive all the lower limit posts to be in a bearing state and a non-bearing state. In the bearing state, all the bearing plates abut against the bottom of the second ring of the sieving device in use. In the non-bearing state, all the bearing plates do not contact the second ring of the sieving device in use; when all the upper limit posts are in the non-tightened state and all the lower limit posts are in the non-bearing state, the sieving device in use can fall downward.

7. The high-efficiency screening device for flour processing according to claim 6, characterized in that, The lifting circular plate has a plurality of first through holes, and the top driving gear has a plurality of second through holes; the first ring of the sieving device has a plurality of hanging rings.

8. The high-efficiency screening device for flour processing according to claim 5, characterized in that, The number of the bottom arc-shaped plates is greater than or equal to 3 and they are evenly distributed in a ring shape; the number of the top arc-shaped plates is greater than or equal to 4 and they are evenly distributed in a ring shape; the number of the electric lifting rods is greater than or equal to 4 and they are evenly distributed in a ring shape.

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