Intelligent size grading screening device

Abstract

The invention provides an intelligent size grading screening device which comprises a plurality of screening rollers and motors, the screening rollers are arranged side by side, a certain gap is formed between every two adjacent screening rollers to form a screening gap, each screening roller is connected with one motor, each screening roller comprises a rotating shaft and a screening piece, the screening pieces are oval, the rotating shafts are sleeved with the screening pieces, and the screening pieces are connected with the motors. The screen piece can be driven by the motor to rotate along with rotation of the rotating shaft. Screening is conducted according to the disturbance principle, disturbance generated by circular motion of the oval screen piece enables a material layer on the screen roller to be loose and to be pushed forwards, meanwhile, materials are screened through the screen seams, the materials smaller than or equal to the screen seams fall down due to earth gravity, and the materials larger than the screen seams continue to move forwards. Due to the fact that each screening roller is provided with an independent motor for driving, the rotating speed of each screening roller can be independently set, multi-mode screening is achieved, different modes can be set according to different materials, universality is high, the screening effect is good, efficiency is high, and noise is low.

Description

Technical Field

[0001] The invention relates to the technical field of material screening, and in particular to an intelligent particle size grading and screening device. Background Art

[0002] Material screening technology is widely used in the screening of solid materials in industries such as coal, electricity, metallurgy, cement, and mining, and is particularly suitable for the screening of coal in coal mines, coal washing plants, and thermal power plants. At present, the screening of coal in coal mines, coal washing plants, and thermal power plants is mostly carried out by vibration, which has many defects, such as the screening using the vibration principle, the single screening mode, poor universality and screening effect, the screen of the vibrating screening equipment is easy to be blocked and damaged, and the maintenance cost is high, and the vibrating screening equipment is extremely noisy during the screening process. Summary of the invention

[0003] The purpose of the present invention is to solve at least one of the above technical defects. To this end, the present invention proposes an intelligent particle size classification and screening device to solve the problems mentioned in the background technology and overcome the shortcomings of the prior art.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] An intelligent particle size grading screening device comprises a plurality of screen rollers and a plurality of motors, wherein the plurality of screen rollers are arranged in parallel, and a certain gap is provided between two adjacent screen rollers to form a screen gap, and each screen roller is connected to one of the motors, and the screen roller comprises a rotating shaft and a plurality of screen plates, wherein the screen plates are elliptical, and the plurality of screen plates are sleeved on the rotating shaft, and the screen plates can rotate as the rotating shaft rotates under the drive of the motor.

[0006] Preferably, the screen rollers include odd-numbered rollers and even-numbered rollers, the odd-numbered rollers and the even-numbered rollers are arranged at intervals, the number of the screen plates on the odd-numbered rollers is an odd number, and the number of the screen plates on the even-numbered rollers is an even number.

[0007] Preferably, a corresponding cleaner is arranged below each of the screen rollers. The cleaner is in the shape of a long plate and is provided with a plurality of notches. The screen plates on the screen rollers corresponding to the cleaners extend into the notches.

[0008] Preferably, the device further comprises an upper sealing cover, which is arranged above the screen roller and covers the screen roller inside.

[0009] Preferably, the device also includes a base frame, on which a first bracket and a second bracket are provided, the motor is mounted on the first bracket, the motor is connected to the screen roller via a coupling, a roller seat is provided at both ends of the screen roller, and the roller seat is mounted on the second bracket.

[0010] Preferably, a feed port is provided at one end of the upper sealing cover, the feed port is communicated with the interior of the upper sealing cover, and the feed port is mounted on the base frame.

[0011] Preferably, the upper sealing cover comprises a top plate and side plates, an observation door is provided on the top plate, one end of the upper sealing cover is connected to the feed port, and the end of the upper sealing cover away from the feed port is a discharge port.

[0012] Preferably, the motor is a variable frequency permanent magnet synchronous motor.

[0013] Therefore, the present invention has the following beneficial effects:

[0014] The intelligent particle size classification and screening device of the present invention uses the disturbance principle for screening. The disturbance caused by the circular motion of the elliptical screen loosens the material layer on the screen roller and pushes it forward. At the same time, the screen gap screens the material. The material smaller than or equal to the screen gap falls due to gravity, and the material larger than the screen gap continues to move forward. Since each screen roller is equipped with a separate motor for driving, the rotation speed of each screen roller can be set separately, thereby realizing multi-mode screening. Different modes can be set according to different materials. It has strong universality, good screening effect, high efficiency, low noise, and the attachments on the screen plate are cleared by the sweeper to keep the screen roller and the screen gap unobstructed, avoiding the occurrence of coal blockage, coal accumulation and hole blockage, and reducing maintenance costs.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 is an axonometric diagram of the intelligent particle size classification and screening device of the present invention;

[0018] Figure 2 It is an axonometric diagram of the intelligent particle size classification and screening device of the present invention from another perspective;

[0019] Figure 3 It is an axonometric diagram of the intelligent particle size classification and screening device of the present invention after the upper sealing cover is hidden;

[0020] Figure 4 It is a top view of the intelligent particle size classification and screening device of the present invention after the upper sealing cover is hidden;

[0021] Figure 5 It is a structural schematic diagram of the screen roller of the present invention;

[0022] Figure 6 It is a schematic diagram of the structure of the screen plate of the present invention;

[0023] Figure 7 It is a structural schematic diagram of the screen roller of the present invention hiding the screen plate;

[0024] Figure 8 is a cross-sectional view of the screen plate of the present invention after being assembled with the rotating shaft;

[0025] Fig. 9 is a state diagram of an odd-numbered roller and an even-numbered roller according to an embodiment of the present invention;

[0026] Fig.10 is a state diagram of an odd-numbered roller and an even-numbered roller according to another embodiment of the present invention;

[0027] Fig.11 A diagram showing the installation status of a plurality of screen plates on a same screen roller according to an embodiment of the present invention;

[0028] Fig.12 It is a schematic diagram of the structure of the sweeper of the present invention;

[0029] Fig.13 It is a structural schematic diagram of the upper sealing cover of the present invention;

[0030] Fig.14 It is a structural schematic diagram of the chassis of the present invention;

[0031] Fig.15 It is an enlarged view of the structure of the observation door of the present invention.

[0032] In the figure: 1. screen roller; 2. motor; 3. rotating shaft; 4. screen plate; 5. odd-numbered rollers; 6. even-numbered rollers; 7. sweeper; 8. notch; 9. upper cover; 10. base frame; 11. first bracket; 12. second bracket; 13. feed inlet; 14. top plate; 15. side plate; 16. observation door; 17. discharge port; 18. circular mounting hole; 19. limiting protrusion; 20. rotating shaft; 21. limiting groove; 22. bushing; 23. handle; 24. rotating connector; 25. locking member; 26. screen slit. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0034] like Figure 1-Figure 15As shown, an intelligent particle size grading screening device includes a plurality of screen rollers 1 and a plurality of motors 2. The plurality of screen rollers 1 are arranged in parallel, and a certain gap is provided between two adjacent screen rollers 1 to form a screen gap 26. Each screen roller 1 is connected to a motor 2. The screen roller 1 includes a rotating shaft 3 and a plurality of screen plates 4. The screen plates 4 are elliptical. The plurality of screen plates 4 are sleeved on the rotating shaft 3. The screen plates 4 can rotate as the rotating shaft 3 rotates under the drive of the motor 2.

[0035] The intelligent particle size classification and screening device of the present invention uses the disturbance principle for screening. The disturbance generated by the circular motion of the elliptical screen plate 4 loosens the material layer on the screen roller 1 and pushes it forward. At the same time, the screen gap 26 screens the material. The material smaller than or equal to the screen gap 26 falls due to gravity, and the material larger than the screen gap 26 continues to move forward. Since each screen roller 1 is equipped with a separate motor 2 for driving, the rotation speed of each screen roller 1 can be set separately, thereby realizing multi-mode screening. Different modes can be set according to different materials, with strong universality, good screening effect, high efficiency and low noise.

[0036] Specifically, Figure 6 As described above, a circular mounting hole 18 is provided at the center of the elliptical screen 4, and a limiting protrusion 19 is provided on the inner surface of the mounting hole. Figure 8 As shown, a limiting groove 21 corresponding to the limiting protrusion 19 is provided on the rotating shaft 3 , and when the screen 4 and the rotating shaft 3 are assembled together, the limiting protrusion 19 of the screen 4 is just embedded in the limiting groove 21 of the rotating shaft 3 .

[0037] The screen plate 4 is connected to the rotating shaft 3 by means of an inlay snap-fit ​​connection. On the one hand, it is easy to assemble during assembly, which helps to improve production efficiency. On the other hand, when the screen plate 4 is worn and damaged and needs to be replaced, it is also easy to disassemble and install, easy to maintain, and reduces maintenance costs.

[0038] As an implementation method, Figure 3 and Figure 4 As shown, there are 20 screen rollers 1 in total.

[0039] As an embodiment, the number of screen rollers 1 may be 25.

[0040] As an embodiment, there may be 30 screen rollers 1 .

[0041] That is to say, the present invention does not impose any specific restriction on the number of screen rollers 1, and those skilled in the art can selectively set them according to actual needs. However, it can be understood that any number of screen rollers 1 that can achieve screening through the screen rollers 1 of the present invention should be within the protection scope of the present invention.

[0042] As an implementation mode, the screen plate 4 is made of high-speed steel.

[0043] As an implementation mode, the screen plate 4 is made of tungsten carbide.

[0044] The screen plate 4 of the present invention is made of high-quality wear-resistant material and has a long service life of up to 15,000 hours.

[0045] Furthermore, the screen roller 1 includes an odd-numbered roller 5 and an even-numbered roller 6, which are arranged at intervals, and the number of the screen plates 4 on the odd-numbered roller 5 is an odd number, and the number of the screen plates 4 on the even-numbered roller 6 is an even number.

[0046] Specifically, Figure 5 As shown, there are two screen rollers 1, of which the left one is an odd-numbered roller 5 and the right one is an even-numbered roller 6, and a plurality of screen plates 4 are arranged on both the odd-numbered roller 5 and the even-numbered roller 6.

[0047] As an implementation method, Figure 5 As shown, 13 screen plates 4 are provided on the odd-numbered rollers 5 , and 14 screen plates 4 are provided on the even-numbered rollers 6 .

[0048] As an implementation manner, 15 screen plates 4 may be provided on the odd-numbered rollers 5 , and 14 screen plates 4 may be provided on the even-numbered rollers 6 .

[0049] As an implementation manner, 11 screen plates 4 may be provided on the odd-numbered rollers 5 , and 12 screen plates 4 may be provided on the even-numbered rollers 6 .

[0050] As an implementation manner, the number of screen plates 4 on the odd-numbered rollers 5 is one more than the number of screen plates 4 on the even-numbered rollers 6 .

[0051] As an implementation manner, the number of screen plates 4 on the odd-numbered rollers 5 is one less than the number of screen plates 4 on the even-numbered rollers 6 .

[0052] That is to say, the number of sieve plates 4 on the odd-numbered rollers 5 and the number of sieve plates 4 on the even-numbered rollers 6 are not fixed, and those skilled in the art can selectively set them according to actual needs. The present invention does not impose any specific restrictions on the number of sieve plates 4 on the odd-numbered rollers 5 and the number of sieve plates 4 on the even-numbered rollers 6.

[0053] As an embodiment, the plurality of screen plates 4 on the same screen roller 1 are distributed at equal intervals.

[0054] As an implementation method, Figure 4 As shown, the motors 2 are arranged on both sides of the device. More specifically, the motors 2 connected to the odd-numbered rollers 5 are arranged on one side of the device, and the motors 2 connected to the even-numbered rollers 6 are arranged on the other side of the device.

[0055] As an embodiment, the number of odd-numbered rollers 5 is the same as the number of even-numbered rollers 6 .

[0056] As an implementation manner, the number of odd-numbered rollers 5 may be one more than the number of even-numbered rollers 6 .

[0057] As an implementation manner, the number of odd-numbered rollers 5 may be one less than the number of even-numbered rollers 6 .

[0058] like Figure 4 As shown, the sieve plates 4 on two adjacent sieve rollers 1 are arranged in a staggered manner, that is, the positions of the sieve plates 4 on the odd-numbered rollers 5 and the sieve plates 4 on the even-numbered rollers 6 are staggered with each other.

[0059] As an implementation mode, a plurality of screen rollers 1 are arranged parallel to each other and are located in the same plane, and there is a certain angle between the plane where the plurality of screen rollers 1 are located and the ground.

[0060] As an implementation mode, the angle between the plane formed by the plurality of screen rollers 1 and the ground is between 10 degrees and 45 degrees.

[0061] As a specific implementation manner, the angle between the plane formed by the plurality of screen rollers 1 and the ground is 30 degrees.

[0062] As a specific implementation manner, the angle between the plane formed by the plurality of screen rollers 1 and the ground is 45 degrees.

[0063] As a specific implementation, the angle between the plane formed by the plurality of screen rollers 1 and the ground is 27.5 degrees.

[0064] As an implementation method, Fig. 9 As shown, the states of the screen plates 4 on two adjacent screen rollers 1 are the same, that is, the long axes of the screen plates 4 on two adjacent screen rollers 1 are parallel to each other.

[0065] As an implementation method, Fig.10 As shown, the states of the screen pieces 4 on two adjacent screen rollers 1 are different, that is, the long axes of the screen pieces 4 on two adjacent screen rollers 1 have a certain angle, which can be as follows: Fig.10 The angle between the long axes of the screen plates 4 on the two adjacent screen rollers 1 differs by 90 degrees, or may be other angles, such as 60 degrees, 45 degrees, 30 degrees, and the like.

[0066] As an implementation mode, the long axes of the plurality of screen plates 4 on the same screen roller 1 are parallel to each other, that is, the orientations of the plurality of screen plates 4 on the same screen roller 1 are the same.

[0067] As an implementation mode, the long axes of several screen plates 4 on the same screen roller 1 are not parallel to each other, that is, the long axes of two adjacent screen plates 4 on the same screen roller 1 are at a certain angle.

[0068] As a specific implementation, a screen roller 1 is provided with 18 screen pieces 4, the angle between the long axes of two adjacent screen pieces 4 is 10 degrees, and the state of each screen piece 4 is as follows: Fig.11 As shown in the figure, the screen plates 4 No. 1 to No. 18 are arranged adjacent to each other on the screen roller 1 in sequence.

[0069] As a specific implementation, 18 screen plates 4 are arranged on one screen roller 1 , the angle between the long axes of two adjacent screen plates 4 is 5 degrees, and the 18 screen plates 4 are arranged adjacent to each other in sequence on the screen roller 1 .

[0070] As a specific implementation, 19 screen plates 4 may be provided on one screen roller 1 , the angle between the long axes of two adjacent screen plates 4 is 10 degrees, and the 19 screen plates 4 are arranged adjacent to each other in sequence on the screen roller 1 .

[0071] The screen plate 4 of the present invention is elliptical, and the elliptical screen plate 4 itself can generate a vertical height difference when rotating, thereby generating disturbances in the vertical direction.

[0072] If the long axes of the plurality of sieve plates 4 on the same sieve roller 1 are parallel to each other, the disturbances generated by the plurality of sieve plates 4 on the same sieve roller 1 in the axial direction of the sieve roller 1 when the sieve plates 4 rotate are consistent.

[0073] If the long axes of several screen plates 4 on the same screen roller 1 are at a certain angle, that is, Fig.11 As shown, the disturbances generated by the plurality of screen plates 4 on the same screen roller 1 in the axial direction of the screen roller 1 when rotating have phase differences.

[0074] If the states of the screen plates 4 on two adjacent screen rollers 1 are the same, that is, the long axes of the screen plates 4 on the two adjacent screen rollers 1 are always parallel to each other during rotation, the disturbances generated on the screen roller 1 perpendicular to the axial direction of the screen roller 1 are consistent.

[0075] If the states of the screen plates 4 on two adjacent screen rollers 1 are the same, that is, the long axes of the screen plates 4 on the two adjacent screen rollers 1 have a certain phase difference during rotation or the phase difference is constantly changing, then the disturbance generated on the screen roller 1 perpendicular to the axial direction of the screen roller 1 is inconsistent, and a phase difference will also occur.

[0076] By setting the screen plate 4 on the screen roller 1 in different states and each screen roller 1 can be controlled by a separate motor 2 to achieve different rotation speeds, different modes of device disturbance can be achieved to adapt to the screening of different materials, with strong universality and high screening efficiency.

[0077] like Figure 5 and Figure 7 As shown, a shaft sleeve 22 is provided between two adjacent screen plates 4 on the rotating shaft 3 , and the screen plates 4 are clamped in the middle by the shaft sleeves 22 on both sides.

[0078] Furthermore, a cleaner 7 is correspondingly arranged below each screen roller 1. Fig.12 As shown, the cleaner 7 is in the shape of a long plate, and is provided with a plurality of notches 8 , into which the sieve plates 4 on the sieve roller 1 corresponding to the cleaner 7 extend.

[0079] Each cleaner 7 is matched with its corresponding screen roller 1. For example, if the number of screen plates 4 on an odd-numbered roller 5 is 13, then the number of notches 8 on the corresponding cleaner 7 is also 13. The diameter of the notches 8 on the cleaner 7 is slightly larger than the thickness of the screen plate 4, and the depth of the notches 8 on the cleaner 7 is greater than or equal to the maximum length of the part of the screen plate 4 exposed from the shaft sleeve 22.

[0080] Further, such as Figure 1 and Fig.13 As shown, the device further comprises an upper sealing cover 9, which is arranged above the screen roller 1, and the upper sealing cover 9 covers the screen roller 1 inside.

[0081] The inner surface of the upper sealing cover 9 and the screen roller 1 form a material channel. When the material such as coal flows in the internal channel, the upper sealing cover 9 forms a semi-enclosed space structure, which can prevent dust from overflowing.

[0082] As an implementation method, Figure 1 and Fig.13 As shown, the upper sealing cover 9 includes a top plate 14 and a side plate 15 , an observation door 16 is provided on the top plate 14 , one end of the upper sealing cover 9 is connected to the feed port 13 , and the end of the upper sealing cover 9 away from the feed port 13 is a discharge port 17 .

[0083] When materials such as coal flow in the internal channel, the disturbance caused by the circular motion of the elliptical screen plate 4 loosens the material layer on the screen roller 1 and pushes it forward. At the same time, the screen gap 26 screens the material, and the material smaller than or equal to the screen gap 26 falls due to gravity. The staff can open the observation door 16 of the upper sealing cover 9 at any time to observe the real-time screening situation in the upper sealing cover 9.

[0084] As an implementation method, Fig.15 As shown, a handle 23 is provided on the observation door 16 , and the observation door 16 is installed on the top plate 14 of the upper sealing cover 9 through a rotating connecting piece 24 . A locking piece 25 is also provided on the observation door 16 and the top plate 14 .

[0085] When observation is required, the locking member 25 is opened, the handle 23 is pulled to open the observation door 16, and the situation inside the upper cover is observed from the window. After the observation is completed, the handle 23 is pushed to close the observation door 16 and the locking member 25 is tightened.

[0086] As an implementation method, Fig.13 As shown, there are three observation doors 16 , and the three observation doors 16 are distributed on the top plate 14 at equal distances.

[0087] As another implementation, there are four observation doors 16 , and the four observation doors 16 are distributed on the top plate 14 at equal distances.

[0088] As another embodiment, there are two observation doors 16 , and the two observation doors 16 are equidistantly distributed on the top plate 14 .

[0089] That is to say, the present invention does not impose any specific restriction on the number of observation doors 16, and those skilled in the art can selectively set them according to factors such as the length of the upper cover of the device. Any number of observation doors 16 that can be used to observe the internal conditions of the upper cover is within the protection scope of the present invention.

[0090] Further, such as Fig.14 As shown, the device also includes a base frame 10, on which a first bracket 11 and a second bracket 12 are provided. A motor 2 is mounted on the first bracket 11, and the motor 2 is connected to the screen roller 1 through a coupling. A roller seat is provided at both ends of the screen roller 1, and the roller seat is mounted on the second bracket 12.

[0091] The first bracket 11 is used to support and install the motor 2, and the second bracket 12 is used to support and install the roller seat. The base frame 10 is an axisymmetric structure, and the first bracket 11 and the second bracket 12 are provided on both sides of the base frame 10. Fig.14 The first bracket 11 and the second bracket 12 on one side are hidden in the figure. More specifically, the support frame can be made of metal, such as stainless steel, aluminum alloy, etc.

[0092] Further, such as Figure 1 and Figure 2 As shown, a feed port 13 is provided at one end of the upper sealing cover 9 , and the feed port 13 is communicated with the interior of the upper sealing cover 9 , and the feed port 13 is mounted on the base frame 10 .

[0093] The material enters the device from the feed port 13, and the motor 2 drives the elliptical screen 4 to make a circular motion, which creates a disturbance, loosens the material layer on the screen roller 1, and pushes it forward. At the same time, the material is screened by the screen gap. The material that is smaller than or equal to the screen gap falls due to gravity, and the material that is larger than the screen gap continues to move forward and finally flows out from the discharge port 17.

[0094] Furthermore, the motor 2 is specifically a variable frequency permanent magnet synchronous motor 2.

[0095] The rotation speed of the screen roller 1 can be adjusted steplessly by the variable frequency permanent magnet synchronous motor 2. Since each screen roller 1 is provided with its own separate motor 2, the rotation speed of each screen roller 1 can be controlled to achieve disturbances of different modes.

[0096] The present invention adopts a variable frequency permanent magnet synchronous motor: it has large starting torque, low power, energy saving, and stepless speed change (which can be adjusted according to on-site use conditions).

[0097] As an embodiment, only the even-numbered rollers 6 rotate when the material is screened.

[0098] As an implementation mode, only the odd-numbered rollers 5 rotate when the material is screened.

[0099] As an implementation mode, when screening the material, the rotation speeds of all the screen rollers 1 are the same.

[0100] As an implementation mode, when screening the material, the rotation speed of the screen roller 1 gradually increases in the direction away from the feed port 13, such as the rotation speed of the first screen roller 1 is 0.1N, r / min, the rotation speed of the second screen roller 1 is 0.2N, r / min, the rotation speed of the third screen roller 1 is 0.3N, r / min, ..., the rotation speed of the nth screen roller 1 is 0.1*n*N, r / min. Wherein N is a preset constant integer, which can be 50, 100, 200, etc.

[0101] As an implementation mode, when screening the material, the rotation speed of the screen roller 1 gradually increases or decreases in the direction away from the feed port 13, such as the rotation speed of the first screen roller 1 is 0.1*n*N, r / min, the rotation speed of the second screen roller 1 is 0.1*(n-1)*N, r / min, the rotation speed of the third screen roller 1 is 0.1*(n-2)*N, r / min, ..., the rotation speed of the nth screen roller 1 is 0.1N, r / min. Wherein N is a preset constant integer, which can be 50, 100, 200, etc.

[0102] The present invention can flexibly select the number of screen rollers and the screen shaft spacing according to the processing capacity and the screening particle size.

[0103] The whole machine of the present invention has low installation power and is more energy-efficient than the vibrating screening equipment of the same type, saving more than 50% of energy.

[0104] The intelligent particle size classification and screening device of the present invention utilizes the disturbance generated by the circular motion of the elliptical screen to loosen the material layer on the screen roller and push it forward. At the same time, the screen gap screens the material. The material smaller than or equal to the screen gap falls due to gravity, while the material larger than the screen gap continues to move forward. A sweeper piece is installed under each sleeve to remove the winding and adhesion materials stuck on the screen piece to keep the screen hole unobstructed, avoiding the occurrence of coal blockage, coal accumulation and hole blockage. Under the same screening area, the screening efficiency of the intelligent particle size classification and screening device is 40% higher than that of other vibrating screening equipment. It has the characteristics of large processing capacity, high screening rate, no vibration during operation, no sticking, no blocking, no jamming, and no noise.

[0105] The intelligent particle size classification and screening device of the present invention is a new type of screening equipment developed on the basis of analyzing the advantages and disadvantages of various existing screening equipment and summarizing the production and use experience of industries such as coal and electricity. The screening principle of this product is not to use vibration screening, but to use the disturbance principle for screening, which completely overcomes many shortcomings of the vibrating screen. The product has a unique structure, large processing capacity, high screening efficiency, reliability and durability, easy maintenance, and low noise. The technical performance is at the leading level at home and abroad, and its many characteristics such as large processing capacity, high screening efficiency, environmental protection, safe and reliable operation can meet the classification requirements of solid loose mixed materials.

[0106] The intelligent particle size classification and screening device of the present invention is widely applicable to the screening of solid materials in industries such as coal, electricity, metallurgy, cement, and mining, and is particularly applicable to the screening of coal in coal mines, coal washing plants, and thermal power plants. The intelligent particle size classifier has no vibration, low noise, fully enclosed structure, no dust leakage, and no requirement for moisture when working.

[0107] The intelligent particle size classification and screening device of the present invention has at least the following advantages:

[0108] 1. The screen roller speed can be adjusted by stepless frequency conversion.

[0109] 2. A single set of screen rollers is small in size and light in weight.

[0110] 3. The transmission mechanism is simple and compact.

[0111] 4. The "maze" structure is adopted, with good sealing effect and no dust escapes.

[0112] 5. A built-in bypass structure can be used to simplify the system layout.

[0113] 6. The special shape design of the screen ensures that the material passes through the screen continuously and smoothly.

[0114] 7. The whole machine can be refueled with an intelligent lubrication system, saving time and effort.

[0115] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0116] It is not difficult for those skilled in the art to understand that the present invention includes any combination of the invention content and specific implementation methods of the above specification and the various parts shown in the drawings. Due to the limited space and to make the specification concise, the various schemes composed of these combinations are not described one by one. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0117] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent particle size classification and screening device, characterized in that: It comprises a plurality of screen rollers and a plurality of motors, wherein the plurality of screen rollers are arranged in parallel, and a certain gap is provided between two adjacent screen rollers, and each screen roller is connected to one of the motors, and the screen roller comprises a rotating shaft and a plurality of screen plates, and the screen plates are elliptical, and the plurality of screen plates are sleeved on the rotating shaft, and the screen plates can rotate with the rotation of the rotating shaft under the drive of the motor.

2. The intelligent particle size classification and screening device according to claim 1, characterized in that: The screen rollers include odd-numbered rollers and even-numbered rollers, the odd-numbered rollers and the even-numbered rollers are arranged at intervals, the number of the screen plates on the odd-numbered rollers is an odd number, and the number of the screen plates on the even-numbered rollers is an even number.

3. The intelligent particle size classification and screening device according to claim 1, characterized in that: A cleaner is correspondingly arranged below each of the sieve rollers. The cleaner is in the shape of a long plate and is provided with a plurality of notches. The sieve plates on the sieve rollers corresponding to the cleaners can extend into the notches.

4. The intelligent particle size classification and screening device according to claim 1, characterized in that: It also includes an upper sealing cover, which is arranged above the screen roller and covers the screen roller inside.

5. The intelligent particle size classification and screening device according to claim 4, characterized in that: It also includes a base frame, on which a first bracket and a second bracket are arranged, the motor is mounted on the first bracket, the motor is connected to the screen roller through a coupling, roller seats are arranged at both ends of the screen roller, and the roller seats are mounted on the second bracket.

6. The intelligent particle size classification and screening device according to claim 5, characterized in that: A feed port is provided at one end of the upper sealing cover, the feed port is communicated with the interior of the upper sealing cover, and the feed port is mounted on the base frame.

7. The intelligent particle size classification and screening device according to claim 6, characterized in that: The upper sealing cover comprises a top plate and a side plate, an observation door is arranged on the top plate, one end of the upper sealing cover is connected to the feed port, and the end of the upper sealing cover away from the feed port is a discharge port.

8. An intelligent particle size classification and screening device according to any one of claims 1 to 7, characterized in that: The motor is specifically a variable frequency permanent magnet synchronous motor.

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