Cross-type reciprocal impact self-cleaning sieving device

Abstract

The present invention relates to a cross-type mutual impact self-cleaning sieving device including multiple groups of cross-type mutual impact rotary sieving mechanisms arranged to convey material diagonally downward, a jump generating mechanism, and a pulse early warning self-cleaning mechanism. The cross-type mutual impact rotary sieving mechanisms are installed adjacent to each other or axially spaced apart, and the self-cleaning sieve sheet devices are coupled and mounted at equal intervals on the outer surface of the rotary shaft. The rotary shaft has a hollow structure and is equipped with injection holes, and the self-cleaning sieve sheet devices on the rotary shaft are arranged at equal intervals in a crosswise direction. The pulse early warning self-cleaning mechanism includes an overload detector and a controller. The overload detector is mounted on one end of the rotary shaft, and the jump generating mechanism is a flat cam device mounted on both ends of the rotary shaft assembly. The cross-type mutual impact self-cleaning sieving device uses cross-type mutual impact cleaning teeth to perform self-cleaning during the rotary sieving process, and the pulse early warning self-cleaning mechanism performs real-time monitoring, early warning and cleaning of the load on the rotating shaft of the material sieving, and the jump generating mechanism further promotes the sieving by vibrating the material.

Description

[Technical Field]

[0001] The present invention is in the field of screening materials, and in particular relates to a staggered and inter-imping self-cleaning screening device. [Background technology]

[0002] Currently, industries such as coke plants, power plants, and coal mines require the screening of materials. However, due to the wetness and viscosity of these materials, traditional vibration screening methods are ineffective. Cross-type screening equipment is commonly used. This type of cross-type screening equipment typically consists of 14 to 27 shafts, each equipped with several equally spaced sieve sheets. Adjacent shafts intersect with each other in a mixed manner between the sieve sheets (screens), forming sieve holes. The shafts are spaced apart, and a certain angle is formed between the center plane of each shaft and the ground, forming an inclined sieve surface.

[0003] During operation of the above-mentioned cross-type sieving equipment, due to the wetness and viscosity of the material, small particles of material tend to adhere to the sieve sheets. As the material adheres to both sides of the sieve sheets, once it reaches a certain thickness, it will rub against the intersecting sieve sheets, creating a disc brake effect, increasing the load on the equipment and causing the motor current to overload, resulting in motor stall. A conventional solution to this problem is to install a toothed scraper 700 under each sieve shaft, as shown in Figure 1. The scraper fits between the sieve sheets, creating a certain gap between them and the sieve sheets, achieving frictionless scraping of the deposits. The problem with this method is that the material scraped by the toothed scraper does not fall completely but instead accumulates within the angle formed by the shaft, the sieve sheets, and the toothed scraper, resulting in a significant increase in the frictional force on the sieve sheets. Typical solutions include periodically cleaning the deposits below the sieve surface or providing a large amount of motor power. The former method has a poor working environment and high manual labor intensity, while the latter method may cause power waste.

[0004] CN204953339U discloses a self-cleaning sieve plate and sieve mechanism, including a sieving mechanism and a knocking mechanism. The sieve mechanism includes a sieve sheet with several filter holes through which materials are separated into oversized and undersized materials, thereby achieving sieving classification. The knocking mechanism is fixed to the frame so that when the knocking mechanism vibrates the sieve mechanism to drop materials, it knocks the sieve sheet, allowing the materials to pass smoothly through the filter holes. The problem it solves is the technical drawback of the prior art sieve sheet, in which the bars are highly susceptible to wear and breakage, and the slits between adjacent bars for dropping materials are too wide or long, resulting in material leakage during long-term use.

[0005] CN208466411U discloses a material sieving arrangement device including a housing and an impeller sieving mechanism. The impeller sieving mechanism is formed by sequentially arranging multiple groups of laterally arranged impeller sieving rolls. Each impeller sieving roll includes an impeller shaft, several impellers, and several impeller partition sleeves. The impeller shafts of each impeller sieving roll are parallel to each other, and the impellers and impeller partition sleeves are arranged to fit sequentially on the impeller shaft at intervals, with overlapping portions of the impellers projected on adjacent impeller sieving rolls in the axial direction. At least one self-cleaning plate is arranged on the impeller. The base of the self-cleaning plate is fixed to the edge of the impeller, and its end extends to the vicinity of the partition sleeve of the impeller of the adjacent impeller sieving roll. The problem it solves is that when material enters the sieving arrangement device and adheres to the impeller partition sleeve, the rotating impeller and self-cleaning plate are inserted between two adjacent impellers on the partition wall to scrape off the material from the impeller partition sleeve, effectively avoiding the problems of clogging of sieve holes, reduced sieving efficiency, increased wear on parts, and reduced service life caused by material adhesion. At the same time, because the sieving rollers of adjacent impellers have different rotational speeds, the self-cleaning plate cleans different positions with each rotation of the impeller. As a result of the effect of multiple rotations, each angle of the impeller partition sleeve is cleaned by the self-cleaning plate, achieving complete cleaning of deposits without blind spots.

[0006] As described above, the above technical solutions do not solve the problem of materials adhering to the sieve sheet during operation of the sieving equipment, causing the "disc brake effect," and at the same time, they do not provide early warning monitoring before the "disc brake effect" occurs. Summary of the Invention

[0007] SUMMARY OF THE INVENTION The object of the present invention is to provide a cross-impact self-cleaning sieving device that solves the problem of "disc brake effect" caused by material adhering to the sieve sheet.

[0008] To achieve the above object, the present invention provides a staggered and inter-imping self-cleaning screening device, which includes a plurality of groups of staggered and inter-imping rotating screening mechanisms arranged to convey materials diagonally downward, a movement generating mechanism, and a pulse warning automatic cleaning mechanism. The cross-type rotary sieving mechanisms are installed adjacent to each other or spaced apart by an axis, and the cross-type mutual impact rotary sieving mechanism includes one group, two groups, or multiple groups of adjacent rotary shaft assemblies, where the adjacent rotary shaft assemblies are arranged crosswise. The rotary shaft assembly includes a rotary shaft and a self-cleaning sieve sheet device attached to the outer surface of the rotary shaft by coupling at equal intervals. The rotary shaft is hollow, and adjacent radial injection holes are arranged on both sides of the self-cleaning sieve sheet device in the axial direction of the rotary shaft. The self-cleaning sieve sheet device is shaped like a circular disk, and includes a rotary shaft sieve sheet attached to the rotary shaft at equal intervals and a group of cleaning teeth symmetrically distributed on both sides of the rotary shaft sieve sheet, where the coaxial cleaning teeth are arranged in the same direction.

[0009] Furthermore, the center distance L between the adjacent rotation axes satisfies the following condition: R+d1 <L<2R-θ R: Radius of the sieve sheet d1: outer diameter of the rotating shaft θ: The safety margin generally takes a value of 2 to 15 mm, and takes a large value when the rotation speed is high.

[0010] Furthermore, the rotary shaft assemblies are installed to rotate synchronously and in the same direction, and the phase difference between adjacent rotary shaft cleaning teeth is 0 to 360 / (2*n), where n is the number of full rotations of the cleaning teeth.

[0011] Furthermore, the self-cleaning sieve sheet devices on the rotating shaft are equally spaced in the coaxial direction, and the cleaning tooth groups of the self-cleaning sieve sheet devices adjacent to each other in the coaxial direction intersect with each other.

[0012] Furthermore, the cleaning tooth groups are arranged on both sides of the sieve sheet of the rotating shaft in one, two or more turns.

[0013] Furthermore, the cleaning teeth are rod-shaped, angular, or frustum-shaped.

[0014] Furthermore, the pulse early warning self-cleaning mechanism includes an overload detector, and the controller includes an overload detector, a controller, and a pulse high pressure gas / liquid impact unit.

[0015] Furthermore, the overload detector is attached to one end of the rotating shaft across the axis.

[0016] Furthermore, the jump generating mechanisms are installed at both ends of the rotating shaft assembly, and the displacement distance H in the axial direction of the rotating shaft is less than 2Δ, where Δ is the minimum average gap on one side of the sieve sheet. The jump generating mechanisms are installed at different axes.

[0017] Furthermore, the jump generating mechanism is a coaxially opposed planar cam device.

[0018] The cross-type mutual impact self-cleaning sieving device of the present invention has the following advantages: 1. The cross-type mutual impact self-cleaning sieving device improves the sieving effect of materials, and by adopting cross-type mutual impact cleaning teeth instead of tooth-shaped scraper structures, it achieves self-cleaning during the rotary sieving process, making the equipment structure simpler and cleaning more convenient. 2. The cross-type mutual impact self-cleaning sieving device adopts a pulse early warning self-cleaning mechanism and is equipped with an overload detector to provide real-time monitoring and early warning of the load on the material sieving rotary shaft. If the specified value is exceeded, a pulse signal is immediately transmitted and controlled by the controller, which passes high-pressure water or high-pressure gas through the hollow rotary shaft to immediately clean the sieving device, immediately reducing motor overload operation, solving the problem of the "disc brake effect" during the material sieving process, and significantly reducing the power of the installed motor, thereby saving energy. 3. The jump generating mechanism installed on the axis of the cross-type mutual impact self-cleaning sieving device uses the axial jump effect of the flat cam to vibrate the material being sieved, further promoting the sieving effect of the material and mitigating the occurrence rate of the "disc brake effect" problem during the sieving process. 4. The cross-type mutual impact self-cleaning sieving device does not require manual cleaning, is easy to maintain, and is highly reliable. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 1 is a schematic diagram of the original configuration of the cross-type sieving installation. [Figure 2] FIG. 2 is a front view I of a cross-type mutual impact self-cleaning sieving device. [Figure 3] FIG. 3 is a plan view (rotation) I of a cross-type mutual impact self-cleaning sieving device. [Figure 4] FIG. 4 is an enlarged view of a portion of the cross-type mutual impact self-cleaning sieving device in the axial direction. [Figure 5]FIG. 5 is a schematic diagram of a planar cam mechanism of a cross-type mutual impact self-cleaning sieving device. [Figure 6] FIG. 6 is a diagram of a portion of a cross-type mutual impact self-cleaning sieve sheet device. [Figure 7] FIG. 7 is a diagram showing the formation of the cleaning track of the cross-type mutual impact self-cleaning sieving device. [Figure 8] FIG. 8 is a complete trajectory diagram of a cross-type mutual impact self-cleaning sieve sheet device. [Figure 9] FIG. 9 is a front view II of a cross-type mutual impact self-cleaning sieving device. [Figure 10] FIG. 10 is a plan view (rotation) II of a cross-type mutual impact self-cleaning sieving device. [Explanation of symbols]

[0020] Numbers in the figure: 100 - rotary shaft I assembly, 101 - rotary shaft I, 102 - sieve sheet of rotary shaft I, 103 - cleaning tooth group I, 104 - overload detector I, 105 - controller I, 106 - injection hole I, 200 - rotary shaft II assembly, 201 - rotary shaft II, 202 - sieve sheet of rotary shaft II, 203 - cleaning tooth group II, 204 - constant surface cam I, 205 - moving plane cam I, 206 - injection hole II, 300 - rotary shaft III assembly, 301 - rotary shaft III, 302 - sieve sheet of rotary shaft III, 303 - cleaning tooth group P III, 304 - overload detector II, 305 - controller II, 400 - rotary shaft IV assembly, 401 - rotary shaft IV, 402 - rotary shaft IV sieve sheet, 403 - rotary shaft IV cleaning tooth a, 404 - rotary shaft IV cleaning tooth b, 405 - rotary shaft IV cleaning tooth c, 406 - rotary shaft IV cleaning tooth d, 407 - rotary shaft IV cleaning tooth e, 408 - rotary shaft IV cleaning tooth f, 409 - constant surface cam II, 410 - moving plane cam II, 500 - cleaning tooth trajectory, 600 - cleaning tooth trajectory line, 700 - scraper. DETAILED DESCRIPTION OF THE INVENTION

[0021] In order to better understand the purpose, structure and function of the present invention, the cross-type mutual impact self-cleaning sieving device of the present invention will be described in more detail below in conjunction with the accompanying drawings. It is clear that the described embodiments are not all embodiments, but only some embodiments of the present invention. Based on the embodiments of the present experimental invention, any other embodiments obtained by those skilled in the art will also fall within the scope of protection of the present invention.

[0022] Example 1 2, 3, 4, and 5, the cross-type mutual impact type self-cleaning sieving device of the present invention includes a cross-type mutual impact type rotary sieving mechanism I arranged for diagonally downward transport, a cross-type mutual impact type rotary sieving mechanism II, a jump generating mechanism I, a pulse early warning self-cleaning mechanism I, a jump generating mechanism II, and a pulse early warning self-cleaning mechanism II. The cross-type mutual impact type rotary mechanism I includes a rotary shaft I assembly 100 and a rotary shaft II assembly 200. The cross-type mutual impact type rotary sieving mechanism II includes a rotary shaft III assembly 300 and a rotary shaft IV assembly 400.

[0023] Furthermore, the rotating shaft I assembly 100 includes a rotating shaft I101 having a hollow structure and a self-cleaning sieve sheet device I, the injection holes I106 are arranged radially of the rotating shaft I101, the self-cleaning sieve sheet devices I are coupled and attached at equal intervals to the outer surface of the rotating shaft I101, and the number of the self-cleaning sieve sheet devices I is greater than two.

[0024] Furthermore, the injection holes I106 are provided on symmetrical opposite sides of the self-cleaning sieve sheet device I and are close to both sides of the self-cleaning sieve sheet device I. High-pressure water or high-pressure gas is passed through the hollow rotating shaft I101 and sprayed out through the injection holes I106 to clean materials adhering to the self-cleaning sieve sheet device I or the rotating shaft I101.

[0025] The self-cleaning sieve sheet device I further includes a sieve sheet 102 on a rotating shaft I and a cleaning tooth group I103. The sieve sheet 102 on the rotating shaft I is circular and is arranged in a cross-coupling arrangement on the outer surface of the rotating shaft I101. The cleaning tooth groups I103 are arranged symmetrically in a single row on both ends of the same diameter of the sieve sheet 102 on the rotating shaft I, with uniform cross-coupling arrangement. The cleaning tooth groups I103 have the same structure and the same protrusion height on both sides of the sieve sheet. The number of cleaning tooth groups I103 is greater than one. When the adhesiveness is strong and the peeling resistance is high, a smaller number of teeth is used, increasing the radial dimension of the cleaning teeth, increasing the strength of the cleaning teeth, and improving the reliability of the self-cleaning sieve sheet device. The relative angle between the self-cleaning sieve sheet device I and the rotating shaft I101 is consistent.

[0026] Furthermore, the rotating shaft II assembly 200 includes a rotating shaft II201 installed in a hollow structure and a self-cleaning sieve sheet device II, an injection hole II206 is installed in the radial direction of the rotating shaft II201, the self-cleaning sieve sheet device II is coupled and attached at equal distances to the outer surface of the rotating shaft II201, and the number of the self-cleaning sieve sheet devices II is greater than two.

[0027] Furthermore, the injection holes II206 are provided on symmetrical opposite sides of the self-cleaning sieve sheet device II and are adjacent to both sides of the self-cleaning sieve sheet device II. High-pressure water or high-pressure gas is passed through the hollow rotating shaft II201 and sprayed through the injection holes II206 to clean materials adhering to the self-cleaning sieve sheet device II or the rotating shaft II201.

[0028] The self-cleaning sieve sheet device II further comprises a rotating shaft II sieve 202 and a cleaning tooth group II 203. The rotating shaft II sieve sheet 202 is shaped like a circular disk and is coupled to the outer surface of the rotating shaft II 201. The cleaning tooth group II 203 is symmetrically coupled to two rows on both end surfaces of the same diameter of the rotating shaft II sieve sheet 202. The cleaning tooth groups II 203 have the same structure, the protrusion heights on both sides of the sieve sheet are the same, and the number of cleaning teeth is greater than one. The relative angles between the self-cleaning sieve sheet device II and the rotating shaft II 201 are consistent.

[0029] Furthermore, the center distance L between the adjacent rotation axes I101 and II201 satisfies the following condition: R+d1 <L<2R-θ R: Radius of the sieve sheet d1: outer diameter of the rotating shaft θ: The safety margin generally takes a value of 2 to 15 mm, and takes a large value when the rotation speed is high.

[0030] Furthermore, the rotating shaft I assembly 100 and the rotating shaft II assembly 200 rotate synchronously in the same direction. The starting angles of the rotating shaft I assembly 100 and the rotating shaft II assembly 200 can be the same or different, and the phase difference between the cleaning teeth is 0 to 360 / (2*n), where n is the average number of cleaning teeth per rotation, to avoid interference during operation. The cleaning teeth are arranged at different radial positions to ensure that each cleaning tooth does not interfere with each other during rotation.

[0031] Furthermore, the self-cleaning sieve sheet device I on the rotation axis I101 and the self-cleaning sieve sheet device II on the rotation axis II201 intersect at equal intervals in the coaxial direction, and the single row of cleaning teeth of the cleaning tooth group I103 is located between the circumference of the double row of cleaning teeth of the cleaning tooth group II203 and intersects with each other. The rotation axes I101 and II201 rotate the self-cleaning sieve sheet device I and the self-cleaning sieve sheet device II during rotation, and the single row of cleaning teeth of the cleaning tooth group I103 and the double row of cleaning teeth of the cleaning tooth group II203 form a cross-type mutual impact mutual cleaning role during rotation, thereby completing the self-cleaning process in the area where the sieve sheets intersect.

[0032] Furthermore, the cleaning tooth group I 103 and the cleaning tooth group II 203 can be evenly arranged around the circumference of the sieve sheet 102 at the rotation axis I of the sieve sheet and the sieve sheet 202 at the rotation axis II in a single, double or multiple turns, which can further improve the cleaning ability.

[0033] Furthermore, the cleaning teeth are rod-shaped, angular, or frustum-shaped.

[0034] Similarly, the structures of the rotary shaft III assembly 300 and the rotary shaft IV assembly 400 are similar and will not be described further here.

[0035] The pulse early warning self-cleaning mechanism I includes an overload detector I104 attached to the lower end of the rotating shaft I101 and a controller I105. The overload detector I104 monitors the load change of the rotating shaft I101 in real time. The effective range of overload detection is set to 0 to 2.5 times the rated load. When the load torque of the rotating shaft exceeds a value 1.2 to 1.5 times the specified motor torque, an abnormal pulse signal is transmitted to the controller I105. The controller I105 then turns on the high-pressure gas or / liquid impact unit. The external high-pressure gas or high-pressure water enters the hollow rotating shaft and is ejected at high pressure through the radial injection holes I106 of the rotating shaft I101, impacting and cleaning the material adhering to the rotating shaft I101 and the sieve sheet 102 of the rotating shaft I101 by pulse method.

[0036] Furthermore, the overload detectors 104 are installed at different axes, and can perform real-time load monitoring and early warning of the rotation torque of each group of cross-type mutual impact type rotation mechanisms.

[0037] The jump generating mechanisms I are installed on both ends of the rotating shaft II assembly 200, and the axial displacement distance H of the rotating shaft II 201 is less than 2Δ, where Δ is the minimum average gap between the sieve sheets on one side. The rotating shaft II 201 swings axially through the jump generating mechanisms, so that the outer diameter of the rotating shaft II 201 is coupled to the sieve sheet 202 of the rotating shaft II, causing the cleaning tooth group II 203 to move between the two adjacent groups of sieve sheets of the rotating shaft I assembly 100 and vibrate the fallen materials. At the same time, the cross-type mutual impact cleaning tooth groups clean each other's materials.

[0038] Furthermore, the vibration generating mechanism I is installed at an axial distance, which realizes regular vibration and loosening during the screening process of the material, making the material fall more smoothly.

[0039] Furthermore, the jump generating mechanism I is provided as a coaxially opposed planar cam device, and includes a fixed planar cam I204 and a moving planar cam I205. The relative displacement between the moving planar cam I205 and the fixed planar cam I204 causes the rotating shaft II201 to oscillate in the axial direction. As the material is pressed in the screening mechanism, the moving planar cam I205 and the fixed planar cam I204 are constantly aligned on a plane in the axial direction, thereby realizing dynamic movement of the rotating shaft II201.

[0040] Similarly, the structures of the jump generating mechanism II and the pulse early warning self-cleaning mechanism II are similar and will not be described in detail here.

[0041] 6, 7 and 8 in combination, the self-cleaning principle of the cross-type mutual impact self-cleaning sieving device of the present invention will be described in detail.

[0042] As shown in FIG. 6, in the area where the sieve sheet 302 of the rotation axis III and the sieve sheet 402 of the rotation axis IV intersect, the sieve sheet 302 of the rotation axis III rotates upward counterclockwise, and the sieve sheet 402 of the rotation axis IV rotates downward clockwise, and the sieve sheets of the two groups perform opposite movements.

[0043] 7 and 8, as the cleaning tooth a403 of rotation axis III begins to intersect and contact with the sieve sheet 302 of rotation axis III, the cleaning tooth a403 of rotation axis III begins to clean deposits on one side of the sieve sheet 302 of rotation axis III. The cleaning tooth a403 of rotation axis III then moves downward around the center of the circle, and the cleaned position point moves upward along with the sieve sheet piece 302 of rotation axis III. The relative movement between the cleaning tooth a403 of rotation axis III and the cleaned position point ultimately forms an arc-shaped cleaning locus 500. This cleaning process involves mutual cleaning, and each cleaning tooth can form an arc-shaped locus 500 on the side of the sieve sheet on both sides of the intersecting cleaning tooth. If there are several cleaning teeth, several cleaning locus lines 600 can be formed, thereby achieving a dynamic self-cleaning effect without the need for additional mechanisms.

[0044] Furthermore, the two groups of adjacent cross-impact rotary mechanisms I and II, including the rotary shaft I assembly 100, the rotary shaft II assembly 200, the rotary shaft III assembly 300, and the rotary shaft IV assembly 400, allow each adjacent rotary shaft assembly to clean the two adjacent, crossing sieve sheets on both sides of the cleaning teeth simultaneously. This cleaning path covers a wide area, extending from the edge of the sieve sheet to near the diameter of the rotary shaft and continuing to the edge of the sieve sheet, achieving complete cleaning from the edge to near the diameter of the shaft. This self-cleaning of the sieve sheet is a dynamic cleaning process, and cleaning occurs continuously during the movement of the adjacent rotary shaft assemblies, preventing buildup of deposits.

[0045] The use process or working state of the present invention: The external motor drives the rotating mechanism to rotate counterclockwise through the reduction gear device, and the material flows diagonally downward for sieving. As the sieving flow of the material moves and reverses, the material enters between the two adjacent groups of sieve sheets of the adjacent rotary shaft I assembly 100, rotary shaft II assembly 200, rotary shaft III assembly 300, and rotary shaft IV assembly 400, and vibrates repeatedly through the cross-type mutual impact self-cleaning by the cleaning tooth groups fixed in the couplings on both sides of the sieve sheets. The materials that pass the sieving fall out of the sieving device, and the materials that cannot be sieved slide down diagonally along the sieving device, thereby achieving the sieving effect of the material.

[0046] The jump generating mechanism is installed at the lower ends of the rotary shaft assemblies II and IV400. The moving planar cams I205 and II410 mounted on the rotary shafts II201 and IV401 create an axial swinging motion relative to the fixed planar cams I204 and II409 when rotating, thereby moving the cleaning teeth coupled to the outer diameters of the sieve sheets of the rotary shafts II201 and IV401 between the cleaning teeth of the two adjacent groups of sieve sheets of the rotary shaft assemblies I200 and III400, thereby providing vibration to the dropped materials. The intersecting groups of cleaning teeth with mutual impact clean the materials at close range, preventing the occurrence of a disc brake effect during the sieving process.

[0047] During the sieving process, the material adheres to the sieve sheet and cleaning teeth, forming a disc brake effect, and if the rotating shaft is overloaded, the overload detector I104 and overload detector III304 installed on the rotating shaft side across the shaft will perform real-time monitoring and early warning. When the load exceeds 1.2 to 1.5 times the rated load, a pulse signal will be generated and transmitted to the controller I. The controller I105 and controller II305 will turn on the control switch for high-pressure water or high-pressure gas, and the external high-pressure gas or high-pressure water will The particles enter the hollow rotating shafts I101, II201, III301 and IV401 and are sprayed at high pressure through the radial injection holes in the rotating shafts I101, II201, III301 and IV401 to clean the materials adhering to the rotating shafts and sieve sheets. The cross-impact self-cleaning by the cleaning tooth groups, the axial movement vibration action of the rotating shafts and the pulse self-cleaning work work in combination to eliminate the disc brake effect of the sieving of materials.

[0048] In the same device, the structure, dimensions and rotation direction of the rotating shaft assemblies are the same. In this embodiment, only two groups of adjacent cross-type mutual impact rotating mechanisms are selected for description, and cleaning teeth are installed on each self-cleaning sieve sheet device in each rotating shaft assembly. However, the present invention is not limited to two groups of cross-type mutual impact rotating mechanisms, and multiple groups of adjacent and cross-type mutual impact rotating mechanisms may also be used.

[0049] Example 2 As shown in Figures 9 and 10, the cross-type mutual impact self-cleaning sieving device includes a conventional sieving rotary structure and a cross-type mutual impact rotary mechanism, and two conventional rotary shafts without cleaning teeth are provided on both sides of the two rotary shafts of the cross-type mutual impact rotary mechanism, and the sieve sheet of the rotary shaft assembly of the conventional sieving rotary mechanism does not have the cross-type mutual impact cleaning teeth and does not have a self-cleaning function.

[0050] The two groups of rotation mechanisms, the cross-type mutual impact rotation mechanism I and the cross-type mutual impact rotation sieving mechanism II, are installed with axes spaced apart. Similarly, the cross-type mutual impact rotation mechanism I includes a rotation shaft I assembly 100 and a rotation shaft II assembly 200, and the cross-type mutual impact rotation sieving mechanism II includes a rotation shaft III assembly 300 and a rotation shaft IV assembly 400.

[0051] Furthermore, the rotation of the sieve sheet 102 of the rotation axis I rotates the cleaning tooth group I103, driving the reciprocal impact self-cleaning of the adjacent sieve sheet 202 of the rotation axis II on the right side, while the cleaning tooth group I103 of the sieve sheet 102 of the rotation axis I cleans the adjacent ordinary sieve sheet on the left side. Similarly, the cleaning tooth group II203 of the sieve sheet 202 of the rotation axis II cleans the adjacent ordinary sieve sheet on the right side. Similarly, the cleaning tooth group of the sieve sheet 302 of the rotation axis III and the cleaning tooth group of the sieve sheet 402 of the rotation axis IV cleans the adjacent ordinary sieve sheets on both sides.

[0052] The above embodiments are preferred implementations of the present invention. The present invention can also be realized in other ways. Various changes and modifications can be made without departing from the scope and spirit of the above patent application. Any simple modifications, equivalent changes, and modifications substantially made to the above embodiments based on the technology of the present invention are all within the scope of the technical solution of the present invention.

[0053] In order to allow those skilled in the art to more easily understand the improvements of the present invention over the prior art, some drawings and descriptions of the present invention have been simplified. For clarity, some other elements have been omitted from the present application documents, and those skilled in the art should recognize that these omitted elements also constitute the content of the present invention.

Claims

1. A cross-type mutual impact self-cleaning sieving device including a plurality of groups of cross-type mutual impact rotary sieving mechanisms arranged to convey obliquely downward, a jump generating mechanism, and a pulse advance warning automatic cleaning mechanism, The cross-type mutual impact rotary sieving mechanisms are installed adjacent to each other or are installed at different axes, The cross-type mutual impact rotary sieving mechanism includes one group, two groups, or a plurality of groups of adjacent rotary shaft assemblies, and the adjacent rotary shaft assemblies are arranged crosswise; The rotating shaft assembly includes a rotating shaft and self-cleaning sieve sheet devices attached to an outer surface of the rotating shaft by coupling at equal intervals, The rotating shaft is hollow, and radial injection holes are arranged adjacent to both sides of the self-cleaning sieve sheet device in the axial direction of the rotating shaft; The self-cleaning sieve sheet device includes a rotating shaft sieve sheet provided in a circular disk shape and attached at equal intervals to the rotating shaft, and cleaning tooth groups symmetrically arranged on both sides of the rotating shaft sieve sheet, The coaxial cleaning tooth groups are arranged in phase.

2. 2. The cross-type mutual impact self-cleaning sieving device according to claim 1, The center distance L between adjacent rotation axes satisfies the following condition: R+d 1 <L<2R-θ R: Radius of the sieve sheet d 1 : Outer diameter of the rotating shaft θ: safety margin.

3. 2. The cross-type mutual impact self-cleaning sieving device according to claim 1, The rotary shaft assemblies are installed to rotate synchronously and in the same direction, and the phase difference between adjacent rotary shaft cleaning teeth is 0 to 360 / (2*n); Here, n is the number of cleaning teeth evenly spaced around the circumference.

4. 2. The cross-type mutual impact self-cleaning sieving device according to claim 1, The self-cleaning sieve sheet devices on the rotating shaft are equally spaced in the coaxial direction, and the cleaning tooth groups of the coaxially adjacent self-cleaning sieve sheet devices intersect with each other.

5. 2. The cross-type mutual impact self-cleaning sieving device according to claim 1, The cleaning tooth groups are evenly arranged on both sides of the sieve sheet of the rotating shaft in a single, double or multiple turns.

6. The cross-type mutual impact self-cleaning sieving device according to any one of claims 1, 3 and 5, wherein the cleaning teeth are rods, squares or frustums.

7. The cross-type mutual impact self-cleaning sieving device according to claim 1, The pulse early warning self-cleaning mechanism includes an overload detector, a controller, and a pulse high pressure gas / liquid impact unit.

8. The cross-type mutual impact self-cleaning sieving device according to claims 1 and 7, The overload detector is attached to one end of the rotating shaft across the axis.

9. 2. The cross-type mutual impact self-cleaning sieving device according to claim 1, The jump generating mechanisms are installed on both ends of the rotary shaft assembly, The displacement distance H in the axial direction of the rotation shaft is less than 2 △, △ is the minimum average gap on one side of the sieve sheet, The jump generating mechanism is mounted across the axis.

10. The cross-type mutual impact self-cleaning sieving device according to claims 1 and 9, The jump generating mechanism is a coaxially opposed planar cam device.

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