CN115178456B - Classifying screen - Google Patents

Classifying screen Download PDF

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Publication number
CN115178456B
CN115178456B CN202210650895.8A CN202210650895A CN115178456B CN 115178456 B CN115178456 B CN 115178456B CN 202210650895 A CN202210650895 A CN 202210650895A CN 115178456 B CN115178456 B CN 115178456B
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Prior art keywords
frame
electromagnet
screen
along
driving
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CN115178456A (en
Inventor
杨柳
李瑜
肖轩
罗洋
曹振涛
张永林
刘晓鹏
张翰威
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Wuhan Polytechnic University
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Wuhan Polytechnic University
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • B07B1/30—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens jigging or moving to-and-fro within their own plane in or approximately in or transverse to the direction of conveyance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B2201/00—Details applicable to machines for screening using sieves or gratings
    • B07B2201/04—Multiple deck screening devices comprising one or more superimposed screens
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

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  • Combined Means For Separation Of Solids (AREA)

Abstract

The invention discloses a classifying screen, which comprises a mounting frame, a screen structure, a magnet structure and a driving structure, wherein the mounting frame comprises a first mounting station and a second mounting station which are arranged at intervals along the upper direction and the lower direction; the screen structure comprises a frame and at least one screen plate, wherein the frame is movably arranged on the first installation station, the screen plate is arranged on the frame, and a discharge hole is formed in the screen plate and used for allowing upper materials of the screen plate to fall off. The invention aims to solve the problem that the existing screening device cannot adjust the screening angle according to the types of different materials so as to adapt to the screening of the different materials.

Description

Classifying screen
Technical Field
The invention relates to the technical field of agricultural material screening, in particular to a classifying screen.
Background
The processing and treatment of crops in China serving as a large agricultural country has important influence on national economy and living standard of people in China. Screening of granular crops is a key process of harvesting operation, and the operation quality of a screening device directly influences the utilization rate of materials. The performance of the existing screening device can basically meet the requirements of material screening, but in view of the diversity of agricultural materials and the changeability and uncontrollability of the operation environment, the problems of poor material fluidity, low screening efficiency, mechanical friction collision and the like easily occur during screening.
Disclosure of Invention
The invention mainly aims to provide a classifying screen, which aims to solve the problem that the existing screening device cannot adjust screening angles according to different materials so as to adapt to screening of different materials.
In order to achieve the above object, the present invention provides a classifying screen, comprising:
the installation frame comprises a first installation station and a second installation station which are arranged at intervals along the upper and lower directions;
the screen structure comprises a frame and at least one screen plate, wherein the frame is movably arranged on the first installation station, the screen plate is arranged on the frame, and a discharge hole is formed in the screen plate and used for allowing upper materials of the screen plate to fall off;
the magnet structure comprises a plurality of first electromagnets distributed in the horizontal direction along the outer periphery side of the frame and a plurality of second electromagnets mounted on the first mounting station and arranged corresponding to the first electromagnets in number, each first electromagnet and the corresponding second electromagnet are oppositely arranged along the up-down direction, and the oppositely arranged first electromagnets and second electromagnets are provided with a first state of being electrified to be mutually separated and a second state of being in contact with each other when the power is off; the method comprises the steps of,
the driving structure is arranged at the second installation station;
when the first electromagnet and the second electromagnet are in the first state, the frame and the mounting frame are arranged at intervals, and the driving structure is used for driving the frame to slide along the horizontal direction.
Optionally, the classifying screen further includes a connection structure, the connection structure includes a plurality of connection members disposed corresponding to the number of the first electromagnets, and each connection member includes:
the support block is arranged on the corresponding second electromagnet, and a cavity which is upwards arranged in an opening manner is formed in the support block; the method comprises the steps of,
the limiting rod extends up and down, and the lower end part of the limiting rod is arranged in the cavity;
the opening position of the cavity is provided with a limiting part, and the limiting part is used for limiting the lower end part of the limiting rod to deviate from the cavity.
Optionally, the driving structure includes:
the installation base is installed on the second installation station, a first belt wheel is rotatably installed on the installation base along an axis in the up-down direction, a driving motor is also installed on the installation base, the output end of the driving motor extends in the up-down direction and is provided with a second belt wheel, and belts are sleeved on the outer sides of the first belt wheel and the second belt wheel; the method comprises the steps of,
the driving rod extends up and down and is arranged on the first belt wheel, the upper end of the driving rod is connected with the frame, and the driving rod rotates along with the first belt wheel and is used for driving the frame to move along the horizontal direction.
Optionally, the driving structure further includes:
the fixed block is arranged at one end of the first belt pulley and provided with a sliding groove extending along the radial direction of the first belt pulley; the method comprises the steps of,
the sliding block comprises a sliding part and a mounting part, wherein the sliding part is arranged in the sliding groove in a sliding way, the sliding part can be fixed at any position on the sliding stroke of the sliding part, and the mounting part is provided with a through hole in a penetrating way along the up-down direction for the driving rod to penetrate and mount.
Optionally, two first straight gears are rotatably installed on the wall of the chute, the two first straight gears are arranged along the vertical direction and meshed with each other, the rotating shaft of one first straight gear penetrates through the inner side and the outer side of the fixed block, a first worm wheel is installed at the extending end of the first straight gear, a first worm is rotatably installed on the fixed block, and the first worm is meshed with the first worm wheel;
the sliding part comprises two toothed plates which are oppositely arranged along the up-down direction, and the two toothed plates are correspondingly meshed with the two first straight gears.
Optionally, the driving structure further includes:
the rotating shaft extends along the front and back directions and is rotatably arranged on the mounting base, one end of the rotating shaft is connected with the driving motor, and the other end of the rotating shaft is provided with a first bevel gear;
the fixed rod extends up and down and is arranged on the rotating shaft, and the first belt wheel is rotatably arranged on the upper side of the fixed rod;
the gear set comprises a second bevel gear and a second worm gear which are coaxially arranged, and the second bevel gear is meshed with the first bevel gear; the method comprises the steps of,
and the second worm is rotatably arranged on the mounting base and meshed with the second worm wheel.
Optionally, the classifying screen further includes a detecting device, the detecting device includes detecting elements disposed corresponding to the number of the first electromagnets, and each detecting element includes:
the first pressure sensor is arranged on the upper side of the first electromagnet, one end of the first pressure sensor is connected with the mounting frame, and the other end of the first pressure sensor is connected with the elastic piece; the method comprises the steps of,
the third electromagnet is arranged between the elastic piece and the first electromagnet, one end of the third electromagnet is connected with the elastic piece, the other end of the third electromagnet is provided with a hanging ring, and the hanging ring is connected with the first electromagnet.
Optionally, at least one second pressure sensor is installed between each screen plate and the frame.
Optionally, the screen plate comprises a screen plate body and a collecting plate which are connected with each other, and the second pressure sensor is installed between the screen plate body and the collecting plate and the frame;
the upper side of the collecting plate is concavely provided with an arc groove, and the discharge hole is correspondingly arranged at the bottom of the arc groove.
Optionally, at least one magnet group is installed on the installation frame, and the magnet group comprises two magnets which are arranged at intervals along the up-down direction;
a plurality of coils are installed on one side of the frame, and the coils are arranged between the two magnets.
In the technical scheme of the invention, in a shutdown state, the frame is downward under the action of gravity, and the upper ends of the second electromagnets support the first electromagnets arranged on the periphery of the frame, so that the frame is arranged on the mounting frame; when the device works, the first electromagnet and the second electromagnet supply power, the first electromagnet and the second electromagnet which are oppositely arranged along the vertical direction repel each other after being electrified, so that the frame is in suspension arrangement, at the moment, the frame can be driven by the driving structure to slide along the horizontal direction, the materials on the sieve plate are sieved, and the materials with the diameters larger than the sieve holes of the sieve plate can fall out through the discharge hole in the sieving process; similarly, when different materials are screened, the current intensity of the first electromagnet and the second electromagnet which are oppositely arranged can be adjusted, so that the repulsive force between the first electromagnet and the second electromagnet is increased or reduced, and as the plurality of first electromagnets are arranged on the periphery of the frame, the repulsive force between the plurality of magnet groups is adjusted by taking the oppositely arranged first electromagnets and second electromagnets as a magnet group, the inclination angle between the screen plate and the horizontal direction can be adjusted, so that the classifying screen can be screened according to the types of different materials.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a front view of an embodiment of a sizing screen according to the present invention;
FIG. 2 is a schematic diagram of a front view of the driving mechanism in FIG. 1;
FIG. 3 is a schematic cross-sectional view of the screen construction of FIG. 1;
FIG. 4 is a schematic cross-sectional view of the connector of FIG. 1;
fig. 5 is a schematic cross-sectional view of the fixing block of fig. 2.
Reference numerals illustrate:
Figure BDA0003684748340000041
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Figure BDA0003684748340000051
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The processing and treatment of crops in China serving as a large agricultural country has important influence on national economy and living standard of people in China. Screening of granular crops is a key process of harvesting operation, and the operation quality of a screening device directly influences the utilization rate of materials. The performance of the existing screening device can basically meet the requirements of material screening, but in view of the diversity of agricultural materials and the changeability and uncontrollability of the operation environment, the problems of poor material fluidity, low screening efficiency, mechanical friction collision and the like easily occur during screening.
In view of this, the present invention proposes a classifying screen, and fig. 1 to 5 are an embodiment of the present invention.
Referring to fig. 1 and 3, the classifying screen 100 includes a mounting frame 1, a screen structure 2, a magnet structure 4, and a driving structure 5, where the mounting frame 1 includes a first mounting station and a second mounting station that are disposed at intervals vertically; the screen structure 2 comprises a frame 201 and at least one screen plate 202, wherein the frame 201 is movably arranged on the first installation station, the screen plate 202 is installed on the frame 201, and a discharge hole 3 is formed in the screen plate 202 and used for allowing upper materials of the screen plate 202 to fall off; the magnet structure 4 includes a plurality of first electromagnets 401 distributed in a horizontal direction along an outer peripheral side of the frame 201 and a plurality of second electromagnets 402 mounted on the first mounting station and arranged in a number corresponding to the plurality of first electromagnets 401, each of the first electromagnets 401 and the corresponding second electromagnet 402 being arranged oppositely in a vertical direction, the oppositely arranged first electromagnets 401 and second electromagnets 402 having a first state in which power is supplied to be spaced from each other, and a second state in which power is supplied to be in contact with each other; the driving structure 5 is arranged at the second installation station; when the first electromagnet 401 and the second electromagnet 402 are in the first state, the frame 201 and the mounting frame 1 are spaced apart, and the driving structure 5 is configured to drive the frame 201 to slide along a horizontal direction.
In the technical solution of the present invention, in a shutdown state, the frame 201 is under the action of gravity, and at this time, the upper ends of the plurality of second electromagnets 402 support the plurality of first electromagnets 401 mounted on the outer periphery of the frame 201, so that the frame 201 is placed on the mounting frame 1; when the device works, the first electromagnet 401 and the second electromagnet 402 supply power, wherein the first electromagnet 401 and the second electromagnet 402 which are oppositely arranged along the up-down direction repel each other after being electrified, so that the frame 201 is arranged in a suspended manner, at the moment, the frame 201 can be driven by the driving structure 5 to slide along the horizontal direction, the materials on the sieve plate 202 are sieved, and the materials with the diameters larger than the sieve holes of the sieve plate 202 can fall out through the discharge hole 3 in the sieving process; similarly, when different materials are screened, the current intensity of the first electromagnet 401 and the second electromagnet 402 which are oppositely arranged can be adjusted, so that the repulsive force between the first electromagnet 401 and the second electromagnet 402 is increased or reduced, and as the plurality of first electromagnets 401 are arranged on the periphery of the frame 201, the repulsive force between the plurality of magnet groups is adjusted when the first electromagnets 401 and the second electromagnets 402 which are oppositely arranged are a magnet group, the inclination angle between the screen plate 202 and the horizontal direction can be adjusted, so that the classifying screen 100 can perform screening treatment according to the types of different materials.
It can be appreciated that, because the frame 201 is suspended under the repulsive force of the first electromagnet 401 and the second electromagnet 402, sliding friction is not generated between the frame 201 and the parts such as the mounting frame 1 in the vibration screening process, so that energy loss is reduced, and the service life of the device is prolonged; in addition, the driving structure 5 drives the frame 201 to move in the horizontal direction when driving the frame 201 to vibrate, so that the suspension of the frame 201 is not affected.
In addition, the number of the sieve plates 202 mounted on the frame 201 is not limited, and may be one or more, when the number of the sieve plates 202 is plural, the sieve plates 202 are mounted on the frame 201 at intervals from top to bottom, and the diameters of the sieve holes of the plurality of sieve plates 202 in the top-to-bottom direction are sequentially decreased, so as to realize step-by-step sieving of the material; in this embodiment, the frame 201 is a hollow shell structure, and a plurality of screening plates 202 are installed in the frame 201 along the vertical direction at intervals, so as to avoid the situation that the material falls from the upper position of the screening plate 202 in the screening process, and the size of each screening plate 202 is sequentially decreased from top to bottom in the top direction, so that the discharge hole 3 on each screening plate 202 is opened.
Wherein, still offer a feed inlet in the upside of frame 201, be convenient for throw in the material, and in frame 201, and correspond the downside of feed inlet is installed a drainage board, the drainage board is the arc setting to form the arc arcwall face above that, when the material falls on the upside of drainage board, the dispersion of material can be guided to the arc arcwall face.
Further, referring to fig. 1 and 4, since the frame 201 is suspended in the air for screening, if the frame 201 is affected by an external force or in the process of suspending the frame 201, the frame 201 is easy to strike the mounting frame 1, so as to prevent the frame 201 from being impacted by an external force or the driving structure 5 from colliding with the mounting frame 1 when driving the frame 201 to vibrate; in this embodiment, the classifying screen 100 further includes a connection structure 6, where the connection structure 6 includes a plurality of connection members 61 corresponding to the number of the first electromagnets 401, each connection member 61 includes a support block 611 and a limit rod 612, the support block 611 is mounted on the corresponding second electromagnet 402, and a cavity 7 disposed upward and having an opening is formed inside the support block 611; the limiting rod 612 extends up and down, and the lower end part of the limiting rod 612 is arranged in the cavity 7; wherein, a limit part 8 is arranged at the opening position of the cavity 7, and the limit part 8 is used for limiting the lower end part of the limit rod 612 from falling out of the cavity 7. Wherein, the stop lever 612 includes one end that is close to its upper end and is smaller along the cross section of horizontal direction and one end that is close to its lower extreme and is larger along the cross section of horizontal direction, works as when the stop lever 612 with the supporting shoe 611 installs, the great one end of stop lever 612 is arranged in the cavity 7, and be provided with in the open position in the cavity 7 the spacing portion 8, under the prerequisite that does not influence the stop lever 612 is in the cavity 7 internal activity, restriction the great one end of stop lever 612 is deviate from in the cavity 7.
Specifically, in this embodiment, the lower end of the limiting rod 612 is spherically disposed and is disposed in the cavity 7, and since the cavity 7 is provided with the limiting portion 8 at an opening position, so that the opening of the cavity is contracted, that is, the diameter of the limiting rod 612 is greater than the opening diameter of the cavity 7, and the rod body diameter of the limiting rod 612 is smaller than the opening diameter of the cavity 7, so that when the limiting rod 612 is mounted on the supporting block 611, a larger moving space is provided for the limiting rod 612, and the supporting block 611 is provided to limit the separation between the limiting rod 612 and the limiting rod, thereby limiting the moving stroke of the frame 201, so as to avoid the impact of the mounting frame 1 during the process, and thus damage to the device.
Referring to fig. 2 and 5, the driving structure 5 includes a mounting base 501 and a driving rod 505, the mounting base 501 is mounted on the second mounting station, a first belt wheel 502 is rotatably mounted on the mounting base 501 along an axis extending up and down, a driving motor 503 is further mounted on the mounting base 501, an output end of the driving motor 503 extends up and down, and a second belt wheel 504 is mounted on an output end of the driving motor 503, and a belt 21 is sleeved on outer sides of the first belt wheel 502 and the second belt wheel 504; the driving rod 505 extends up and down, is mounted on the first belt wheel 502, the upper end of the driving rod 505 is connected with the frame 201, and the driving rod 505 rotates along with the first belt wheel 502 to drive the frame 201 to move along the horizontal direction. The mounting base 501 is mounted on the mounting frame 1, the driving motor 503 is mounted on the mounting base 501, the driving motor 503 drives the second belt pulley 504 to rotate, and the second belt pulley 504 drives the first belt pulley 502 to rotate through the belt 21, so that the driving rod 505 can be driven to rotate around the first belt pulley 502, wherein the upper end of the driving rod 505 is hinged with the frame 201 and can move up and down on the premise of rotating along with the first belt pulley 502, and therefore connection with the frame 201 is not affected when the first electromagnet 401 and the second electromagnet 402 are electrified or powered off, and in the driving process of the driving motor 503, the driving rod 505 is made to do circular motion around the first belt pulley 502, and then the frame 201 is driven to move along the moving track of the driving rod 505, so that materials are screened.
Further, the driving structure 5 further includes a fixed block 506 and a sliding block 507, where the fixed block 506 is mounted on one end of the first pulley 502, and a sliding slot 9 extending along a radial direction of the first pulley 502 is formed on the fixed block; the slider 507 includes a sliding portion 507a and an installation portion 507b, the sliding portion 507a is slidably disposed in the chute 9, the sliding portion 507a may be fixed at any position on a sliding stroke thereof, and the installation portion 507b is provided with a through hole along an up-down direction for the driving rod 505 to pass through and install. The driving rod 505 is inserted through the mounting portion 507b, and by adjusting the sliding portion 507a to slide in the chute 9 and fixing the sliding portion 507a at an arbitrary position on the sliding stroke thereof, the position of the sliding block 507 with respect to the fixed block 506 is adjusted, and the distance between the driving rod 505 and the fixed block 506, that is, the rotation radius of the driving rod 505 is adjusted, so that the movement frequency of the frame 201 in the horizontal direction can be adjusted.
Further, two first spur gears 10 are rotatably mounted on the groove wall of the chute 9, the two first spur gears 10 are arranged vertically and meshed with each other, a rotation shaft 508 of one first spur gear 10 penetrates through the inner side and the outer side of the fixed block 506, a first worm wheel 11 is mounted at the extending end of the first spur gear, a first worm 12 is rotatably mounted on the fixed block 506, and the first worm 12 is meshed with the first worm wheel 11; the sliding portion 507a includes two toothed plates 13 disposed opposite to each other in the up-down direction, and the two toothed plates 13 are engaged with the two first spur gears 10, respectively. By rotating the first worm 12 to drive the first worm wheel 11 to rotate, the first worm wheel 11 rotates to drive one of the first spur gears 10 to rotate and drive the other of the first spur gears 10 meshed therewith to rotate, and since the two toothed plates 13 are respectively meshed with the two first spur gears 10, when the first worm 12 rotates in different rotation directions, the sliding portion 507a can be driven to slide close to or far from the fixed block 506 to adjust the rotation radius of the driving rod 505; further, the sliding portion 507a may be fixed at any position of its sliding stroke due to the self-locking relationship of the first worm 12 and the first worm wheel 11.
It can be appreciated that, since the slider 507 is located above the first pulley 502 and the driving rod 505 is movably disposed on the mounting portion 507b in the up-down direction, the lower end portion of the driving rod 505 is always located at the upper end of the first pulley 502 so as not to interfere with the rotation of the first pulley 502 when the first pulley 502 rotates during the up-down movement of the driving rod 505.
Referring to fig. 2, the driving structure 5 further includes a rotation shaft 508, a fixing rod 509, a gear set 510, and a second worm 511, where the rotation shaft 508 extends in a front-rear direction and is rotatably mounted on the mounting base 501, one end of the rotation shaft 508 is connected to the driving motor 503, and the other end is mounted with a first bevel gear 14; the fixed rod 509 extends up and down, and is mounted on the rotating shaft 508, and the first pulley 502 is rotatably mounted on the upper end of the fixed rod 509; the gear set 510 includes a second bevel gear 510a and a second worm gear 510b coaxially disposed, the second bevel gear 510a being meshed with the first bevel gear 14; the second worm 511 is rotatably mounted on the mounting base 501 and is engaged with the second worm wheel 510 b.
By rotating the second worm 511, the second worm 511 rotates to drive the second worm wheel 510b to rotate, and further drive the second bevel gear 510a to rotate, and the second bevel gear 510a rotates to drive the first bevel gear 14 to rotate, so that the rotating shaft 508 rotates on the mounting base 501, and since the driving motor 503 and the fixing rod 509 are both fixed on the rotating shaft 508, when the rotating shaft 508 rotates, an included angle between the fixing rod 509 and the driving motor 503 in a vertical direction can be adjusted, and when the driving rod 505 moves circumferentially around the first belt wheel 502, and when an end surface of the first belt wheel 502 is not parallel to a horizontal direction, the driving rod 505 moves circumferentially, and a projection of a movement track of the driving rod 505 on a horizontal plane is an elliptical track, so that the frame 201 can be driven to move in a horizontal direction.
Specifically, the rotation radius of the driving rod 505 can be adjusted by adjusting the position of the sliding portion 507a at the fixed block 506, when the rotation angle of the rotation shaft 508 is adjusted, the angle of the driving rod 505 in the up-down direction can be adjusted, that is, under the action of the driving rod 505, the frame 201 can make elliptical motion with adjustable half-length, the shorter half-length of the frame 201 can be adjusted by changing the rotation radius of the driving rod 505, the longer half-length of the frame 201 can be adjusted by changing the inclination angle of the driving rod 505 in the up-down direction, and when different materials are screened, the optimal movement track is selected, so as to achieve the optimal screening efficiency.
In addition, on the installation base 501, an installation block 22 is rotatably installed, a through hole is formed in the installation block 22 in a penetrating manner along the left-right direction, a guide rod 23 is slidably installed in the through hole, a limiting block 24 is rotatably installed at one end of the guide rod 23 along the front-back axis, a through hole is formed in the limiting block 24 in a penetrating manner along the up-down direction, and the driving rod 505 is penetrated through the through hole, and under the combined action of the installation portion 507b and the limiting block 24, the stability of the movement of the driving rod 505 can be improved.
Referring to fig. 1, the classifying screen 100 further includes a detecting device 15, where the detecting device 15 includes detecting elements 151 corresponding to the first electromagnets 401, each detecting element 151 includes a first pressure sensor 151a and a third electromagnet 151b, the first pressure sensor 151a is disposed on the upper side of the first electromagnet 401, one end of the first pressure sensor is connected to the mounting frame 1, and the other end of the first pressure sensor is connected to the elastic element 16; the third electromagnet 151b is disposed between the elastic member 16 and the first electromagnet 401, one end of the third electromagnet 151b is connected with the elastic member 16, the other end is provided with a hanging ring 17, and the hanging ring 17 is connected with the first electromagnet 401.
Wherein, the lower magnetic pole of the third electromagnet 151b is opposite to the upper magnetic pole of the first electromagnet 191 when the third electromagnet is electrified, the attractive force between the lower magnetic pole and the upper magnetic pole acts on the first pressure sensor 151a through the elastic piece 16, and the first pressure sensor 151a inputs a pressure signal into the information processing module of the control panel. When the weight of the material is too large, the total weight of the screen structure 2 is larger than the repulsive force between the first electromagnets 401 and the second electromagnets 402, so that the frame 201 moves downwards, the distance between the first electromagnets 401 and the third electromagnets 151b increases, the magnetism is weakened, the pressure of the first pressure sensor 151a decreases, the information processing module in the control panel receives the information of the decrease in pressure, and the current in the second electromagnets 402 increases, so that the repulsive force between the first electromagnets 401 and the second electromagnets 402 increases, and the frame 201 returns to the proper height; when the weight of the material is reduced or no material is present, contrary to the above-mentioned situation, the repulsive force between the first electromagnet 401 and the second electromagnet 402 is reduced, so that the frame 201 returns to a proper height, and thus, the frame 201 is always in a proper height range during the operation of the classifying screen 100, unnecessary vibration and collision caused by material change to the driving structure 5 and the mounting frame 1 are reduced, and the service life of the device is prolonged.
Referring to fig. 3, at least one second pressure sensor 18 is installed between each screen 202 and the frame 201. After the material screening is stable, the pressure signals of the screen plate 202 and the second pressure sensor 18 of the frame 201 support inside the frame 201 are respectively output to the information processing module of the control panel, so that the current in the second electromagnet 402 is respectively fine-tuned, the frame 201 maintains the optimal inclination angle, and the optimal screening efficiency is achieved.
Specifically, the screen 202 includes a screen body 202a and a collecting plate 202b that are connected to each other, and the second pressure sensor 18 is installed between the screen body 202a and the collecting plate 202b and the frame 201; an arc groove is concavely arranged on the upper side surface of the collecting plate 202b, and the discharge hole 3 is correspondingly arranged at the bottom of the arc groove. By installing the second pressure sensor 18 between the collecting plate 202b and the screen plate body 202a and the frame 201, the second pressure sensors 18 disposed at the lower ends of the screen plate body 202a and the collecting plate 202b output pressure signals of each part to the information processing module of the control panel, and the screening efficiency of the screen plate 202 is calculated according to the ratio of the pressure variation on the collecting plate 202b to the pressure variation on the screen plate body 202a, and the current in the second electromagnet 402 is finely adjusted according to the screening efficiency fed back by the screen plate 202, so that the frame 201 maintains an optimal inclination angle, and the optimal screening efficiency is achieved.
Referring to fig. 1, the mounting frame 1 is provided with at least one magnet assembly 19, and the magnet assembly 19 includes two magnets 191 disposed at intervals in an up-down direction; a plurality of coils 20 are installed at one side of the frame 201, and the plurality of coils 20 are disposed between the two magnets 191. By forming the magnetic field by providing two of the magnets 191 up and down, the coil 20 cuts magnetic field lines under the movement of the frame 201, generates current, collects electric power and supplies power to the first and second pressure sensors 151a and 18.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.

Claims (7)

1. A sizing screen, comprising:
the installation frame comprises a first installation station and a second installation station which are arranged at intervals along the upper and lower directions;
the screen structure comprises a frame and at least one screen plate, wherein the frame is movably arranged on the first installation station, the screen plate is arranged on the frame, and a discharge hole is formed in the screen plate and used for allowing upper materials of the screen plate to fall off;
the magnet structure comprises a plurality of first electromagnets distributed in the horizontal direction along the outer periphery side of the frame and a plurality of second electromagnets mounted on the first mounting station and arranged corresponding to the first electromagnets in number, each first electromagnet and the corresponding second electromagnet are oppositely arranged along the up-down direction, and the oppositely arranged first electromagnets and second electromagnets are provided with a first state of being electrified to be mutually separated and a second state of being in contact with each other when the power is off; the method comprises the steps of,
the driving structure is arranged at the second installation station;
when the first electromagnet and the second electromagnet are in the first state, the frame and the mounting frame are arranged at intervals, and the driving structure is used for driving the frame to slide along the horizontal direction;
the driving structure includes:
the installation base is installed on the second installation station, a first belt wheel is rotatably installed on the installation base along an axis in the up-down direction, a driving motor is also installed on the installation base, the output end of the driving motor extends in the up-down direction and is provided with a second belt wheel, and belts are sleeved on the outer sides of the first belt wheel and the second belt wheel; the method comprises the steps of,
the driving rod extends up and down and is arranged on the first belt wheel, the upper end of the driving rod is connected with the frame, and the driving rod rotates along with the first belt wheel and is used for driving the frame to move along the horizontal direction;
the driving structure further includes:
the fixed block is arranged at one end of the first belt pulley and provided with a sliding groove extending along the radial direction of the first belt pulley; the method comprises the steps of,
the sliding block comprises a sliding part and an installation part, the sliding part is arranged in the sliding groove in a sliding way, the sliding part can be fixed at any position on the sliding stroke, and the installation part is provided with a through hole in a penetrating way along the up-down direction for the driving rod to pass through and be installed;
the two first straight gears are arranged on the wall of the chute in a rotating way, the two first straight gears are arranged along the vertical direction and meshed with each other, the rotating shaft of one first straight gear penetrates through the inner side and the outer side of the fixed block, a first worm wheel is arranged at the extending end of the first straight gear, a first worm is arranged on the fixed block in a rotating way, and the first worm is meshed with the first worm wheel;
the sliding part comprises two toothed plates which are oppositely arranged along the up-down direction, and the two toothed plates are correspondingly meshed with the two first straight gears.
2. The sizing screen of claim 1, further comprising a connecting structure comprising a plurality of connecting members disposed in correspondence with the number of first electromagnets, each of the connecting members comprising:
the support block is arranged on the corresponding second electromagnet, and a cavity which is upwards arranged in an opening manner is formed in the support block; the method comprises the steps of,
the limiting rod extends up and down, and the lower end part of the limiting rod is arranged in the cavity;
the opening position of the cavity is provided with a limiting part, and the limiting part is used for limiting the lower end part of the limiting rod to deviate from the cavity.
3. The sizing screen of claim 1, wherein the drive structure further comprises:
the rotating shaft extends along the front and back directions and is rotatably arranged on the mounting base, one end of the rotating shaft is connected with the driving motor, and the other end of the rotating shaft is provided with a first bevel gear;
the fixed rod extends up and down and is arranged on the rotating shaft, and the first belt wheel is rotatably arranged at the upper end of the fixed rod;
the gear set comprises a second bevel gear and a second worm gear which are coaxially arranged, and the second bevel gear is meshed with the first bevel gear; the method comprises the steps of,
and the second worm is rotatably arranged on the mounting base and meshed with the second worm wheel.
4. The sizing screen of claim 1, further comprising a detection device comprising a detection member positioned in correspondence with a plurality of the first electromagnets, each detection member comprising:
the first pressure sensor is arranged on the upper side of the first electromagnet, one end of the first pressure sensor is connected with the mounting frame, and the other end of the first pressure sensor is connected with the elastic piece; the method comprises the steps of,
the third electromagnet is arranged between the elastic piece and the first electromagnet, one end of the third electromagnet is connected with the elastic piece, the other end of the third electromagnet is provided with a hanging ring, and the hanging ring is connected with the first electromagnet.
5. A sizing screen according to claim 1, wherein at least a second pressure sensor is mounted between each screen deck and the frame.
6. The sizing screen of claim 5, wherein the screen deck comprises a screen deck body and a collection deck interconnected, the screen deck body and the collection deck each having the second pressure sensor mounted therebetween with the frame;
the upper side of the collecting plate is concavely provided with an arc groove, and the discharge hole is correspondingly arranged at the bottom of the arc groove.
7. The sizing screen of claim 1, wherein the mounting frame has mounted thereon at least one magnet assembly comprising two magnets spaced vertically apart;
a plurality of coils are installed on one side of the frame, and the coils are arranged between the two magnets.
CN202210650895.8A 2022-06-08 2022-06-08 Classifying screen Active CN115178456B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB349560A (en) * 1929-11-19 1931-05-19 Morley Punshon Reynolds An improved method of and apparatus for imparting a reciprocatory movement to a screen for screening materials, or like apparatus
CN2933614Y (en) * 2006-08-01 2007-08-15 刘春祥 Magnetic driving vibrating sieve
CN205336913U (en) * 2016-01-06 2016-06-29 上海大学 Sorting device is collected to peanut based on permanent magnetism suspension platform
CN110844477A (en) * 2019-11-29 2020-02-28 福建省明能新型建材有限公司 Iron tailing sand raw material quantitative separation equipment
CN213194511U (en) * 2020-08-14 2021-05-14 辽宁沃德药业有限公司 Screening machine of ultrasonic vibration
CN214638053U (en) * 2020-12-30 2021-11-09 天津市挚信鸿达医疗器械开发有限公司 Oscillating screen with scum self-cleaning function

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB349560A (en) * 1929-11-19 1931-05-19 Morley Punshon Reynolds An improved method of and apparatus for imparting a reciprocatory movement to a screen for screening materials, or like apparatus
CN2933614Y (en) * 2006-08-01 2007-08-15 刘春祥 Magnetic driving vibrating sieve
CN205336913U (en) * 2016-01-06 2016-06-29 上海大学 Sorting device is collected to peanut based on permanent magnetism suspension platform
CN110844477A (en) * 2019-11-29 2020-02-28 福建省明能新型建材有限公司 Iron tailing sand raw material quantitative separation equipment
CN213194511U (en) * 2020-08-14 2021-05-14 辽宁沃德药业有限公司 Screening machine of ultrasonic vibration
CN214638053U (en) * 2020-12-30 2021-11-09 天津市挚信鸿达医疗器械开发有限公司 Oscillating screen with scum self-cleaning function

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