A purple sand fine material screening device and use method thereof

Abstract

The present invention relates to the technical field of screening devices, and in particular to a purple clay fine material screening device and a method of using the same. A purple clay fine material screening device comprises a shell, a rotating drum, a screening net, a first collecting piece and a second collecting piece. The rotating drum is installed in the shell and can rotate around a first direction in the shell, and the screening net is installed in the shell. The screening net comprises a main screen, a connecting belt and a discharge net arranged in sequence along a second direction. When the agglomerated material enters the rotating drum of the purple clay fine material screening device of the present invention, the centrifugal force of the rotating drum is first used to make the material collide with the inner wall of the shell or the screening net during the falling process, and in the screening process, the main screen is used to continuously move back and forth in the first direction and pull the connecting belt, thereby generating a certain pressure on the agglomerated material in the connecting belt, generating a certain crushing effect on the material, and improving the screening efficiency and screening effect.

Description

Technical Field

[0001] The invention relates to the technical field of screening devices, and in particular to a purple sand fine material screening device and a use method thereof. Background Art

[0002] Screening of fine purple sand is a key step in the purple sand production process. Its main purpose is to separate the crushed purple sand powder into several parts with uniform particle size to ensure the uniformity of the powder and meet the requirements of various molding processes. Early screening was basically done manually, but now most screening devices such as rotary vibrating screens are used for screening.

[0003] The vibrating motor of the rotary vibrating screen has eccentric blocks of different phases at the upper and lower ends. By adjusting the phase angle of the eccentric blocks at the upper and lower ends, the movement trajectory of the material on the screen surface can be changed. When the phase angle of the eccentric blocks at the upper and lower ends of the rotary vibrating screen is 90 degrees, the material can be concentrated from all sides to the center. And due to the high-speed rotation of these eccentric blocks, a composite inertial force will be generated, forcing the vibrating body of the screen machine to perform a composite rotational motion. The screen frame continues to reciprocate under the action of the vibration force, thereby driving the screen to vibrate periodically. In this way, the material on the screen moves actively with the screen box in a directional manner. Materials smaller than the screen aperture fall through the screen aperture to the lower layer and become screened materials; while materials larger than the screen aperture are discharged from the discharge port after continuous jumping movements, and finally the screening work is completed.

[0004] However, the crushed purple sand fines are prone to agglomeration, and the purple sand fines may absorb moisture and impurities in the air during the crushing process, which form a bridge effect inside the powder, thus easily causing the crushed purple sand fines to agglomerate. When the rotary vibrating screen in the prior art screens the purple sand fines, since the diameter of the agglomerated purple sand fines is larger than the mesh diameter, the purple sand fines with larger diameters can usually only be directly discharged and then crushed again, which is cumbersome to operate and has an adverse effect on the screening efficiency and screening effect. Summary of the invention

[0005] The invention provides a purple clay fine material screening device and a use method thereof, so as to solve the problem that when the existing screening device screens the purple clay fine material, since the diameter of the agglomerated purple clay fine material is larger than the aperture of the screen, the purple clay fine material with a larger diameter can usually only be directly discharged and then crushed again, which has an adverse effect on the screening efficiency and the screening effect.

[0006] The present invention provides a purple sand fine material screening device, which adopts the following technical scheme: a purple sand fine material screening device comprises a shell, a rotating drum, a screening net, a first collecting piece and a second collecting piece; the rotating drum is installed in the shell and can rotate around a first direction in the shell, and the first direction is a vertical direction; a feeding drum is coaxially arranged on the rotating drum, and the feeding drum is arranged along the first direction and extends out of the shell; the feeding drum is connected with the rotating drum, and the screening net is installed in the shell, and the screening net is located on a side of the rotating drum away from the feeding drum in the first direction; the screening net comprises a main screening net, a connecting belt and a discharging net arranged in sequence along a second direction, and the second direction is perpendicular to the first direction, and the second direction is a radial direction of the rotating drum; the main screening net is located on the connecting belt in the second direction away from the rotating drum one side of the central axis; the main screen is annular and can reciprocate in the shell along the first direction, the discharge net is fixedly installed in the shell, and the main screen and the discharge net are connected by a connecting belt; in the initial state, the connecting belt is recessed toward one side of the inner bottom wall of the shell, and the rotation of the rotating cylinder around the first direction can make the material fall from the rotating cylinder onto the main screen, and the material can move on the main screen along the second direction to the side close to the central axis of the rotating cylinder; the first collecting piece and the second collecting piece are both installed on the shell, the first collecting piece is used to collect the material falling from the main screen and the discharge net, and the speed of the material falling from the rotating cylinder to the screen net is greater than the speed of the material falling from the main screen to the first collecting piece, and the second collecting piece is used to collect the material passing through the discharge net.

[0007] Furthermore, the outer peripheral wall surface of the rotating drum is connected to the interior of the shell.

[0008] Furthermore, the discharge screen and the main screen are eccentrically arranged.

[0009] Furthermore, the first collecting piece is a screen plate, and the second collecting piece is a gathering plate. Both the screen plate and the gathering plate are arranged in the shell, and the screen plate and the gathering plate are arranged sequentially in the first direction. The screen plate is located on the side of the gathering plate close to the screen net in the first direction; a discharge cylinder is fixedly arranged on the discharge net, and the discharge cylinder is arranged along the first direction and passes through the screen plate, so that the material passing through the discharge cylinder can fall on the gathering plate.

[0010] Furthermore, the main screen is installed in the shell through a first elastic member, and the first elastic member is arranged along the first direction.

[0011] Furthermore, the rotating cylinder includes a main cylinder body and multiple material dividing bodies, the main cylinder body is connected with the feeding cylinder, the multiple material dividing bodies are all arranged along the second direction, the multiple material dividing bodies are evenly distributed in the circumferential direction of the main cylinder body and are all connected with the main cylinder body, and the material dividing bodies have through openings in the second direction, and each material dividing body is slidably provided with a blocking block on the side away from the main cylinder body along the second direction; the blocking block has a first state and a second state, when in the first state, the blocking block opens the through opening on the corresponding material dividing body, and when in the second state, the blocking block blocks the through opening on the corresponding material dividing body, the main screen reciprocates along the first direction, and can switch the blocking block between the first state and the second state, and in the initial state, the blocking block is in the first state.

[0012] Furthermore, a screen frame is arranged on the outer peripheral wall of the main screen, the screen frame is arranged along the first direction and is a cylindrical structure, and a plurality of blocking mechanisms are arranged on the inner peripheral wall of the screen frame, and the plurality of blocking mechanisms are arranged one by one corresponding to the plurality of blocking blocks, the blocking mechanism comprises a first magnet and a second magnet, the first magnet and the second magnet are arranged in sequence on the screen frame along the first direction, and the first magnet is located on the side of the second magnet away from the main screen along the first direction; the blocking block comprises a first blocking section and a second blocking section, the first blocking section is arranged along the second direction, the second blocking section is inclined and fixedly connected to the first blocking section, and the second blocking section can slide on the material dividing body arranged corresponding to it; a third magnet is arranged on one end of the first blocking section close to the screen frame along the second direction, the third magnet has opposite magnetic poles to the first magnet, and the third magnet has the same magnetic poles as the second magnet; when the blocking block is in the first state, the third magnet and the second magnet are on the same horizontal plane in the second direction and repel each other; when the blocking block is in the second state, the third magnet and the first magnet are on the same plane in the second direction and attract each other.

[0013] Furthermore, it also includes a power mechanism, which includes a first motor, an upper eccentric block and a lower eccentric block, and the first motor has an output shaft at both ends along the first direction; the upper eccentric block and the lower eccentric block are respectively installed on the two output shafts of the first motor along the first direction, and the phase angle between the upper eccentric block and the lower eccentric block is 90°.

[0014] Furthermore, a cover plate is provided on the shell, and the feed barrel passes through the cover plate along the first direction; a base is provided at the bottom of the shell, and the base is connected to the shell through a plurality of second elastic members, and the plurality of second elastic members are evenly distributed around the first direction.

[0015] The present invention also provides a method for using a purple sand fine material screening device, using the above-mentioned purple sand fine material screening device, comprising the following steps:

[0016] S100, pouring the material into the feed cylinder and driving the rotating cylinder to rotate around the first direction, while driving the purple sand fine material screening device to perform a rotary vibration motion; the rotating cylinder rotates around the first direction to throw the material onto the main screen, and moves along the second direction on the main screen to the side close to the central axis of the rotating cylinder, and the material with a diameter smaller than the aperture of the main screen will be screened onto the first collecting member;

[0017] S200, driving the main screen to reciprocate along the first direction, so that the blocking block switches between the first state and the second state, and pulling the connecting belt to crush the agglomerated materials;

[0018] S300, the material that has been crushed by the connecting belt and has a diameter smaller than the aperture of the discharge net will be screened from the discharge net to the screen plate, and the material that still cannot be screened will fall on the second collecting piece after passing through the discharge net and the discharge barrel.

[0019] The beneficial effects of the present invention are as follows: a purple sand fine material screening device of the present invention is provided with a shell, a rotating drum, a screening net, a first collecting piece and a second collecting piece. When the agglomerated material enters the rotating drum, in the process of the material falling from the rotating drum onto the main screening net, the centrifugal force of the rotating drum is firstly utilized to make the material collide with the inner wall of the shell or the screening net during the falling process, and the collision is utilized to have an impact effect on the agglomerated material. In the screening process, the main screening net is utilized to continuously reciprocate in the first direction and pull the connecting belt, thereby generating a certain pressure on the agglomerated material in the connecting belt, generating a certain crushing effect on the material, further processing the agglomerated material, reducing the quality of the material finally remaining on the screening net, and improving the screening efficiency and the screening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a purple sand fine material screening device of the present invention;

[0022] Figure 2 A cross-sectional view of the overall structure of an embodiment of a purple sand fine material screening device of the present invention;

[0023] Figure 3 It is a front view of the overall structure of an embodiment of a purple sand fine material screening device of the present invention;

[0024] Figure 4 for Figure 3Sectional view along AA;

[0025] Figure 5 for Figure 4 The enlarged view of point B in the middle;

[0026] Figure 6 It is a schematic diagram of a blocking block of an embodiment of a purple sand fine material screening device of the present invention when it is in a second state;

[0027] Figure 7 for Figure 6 Enlarged view of point C in the middle;

[0028] Figure 8 It is a schematic structural diagram of a feed cylinder and a rotating cylinder of an embodiment of a purple sand fine material screening device of the present invention;

[0029] Fig. 9 It is a structural schematic diagram of a screening net of an embodiment of a purple sand fine material screening device of the present invention;

[0030] Fig.10 The present invention is a top view of a screen mesh of an embodiment of a purple sand fine material screening device.

[0031] In the figure: 100, shell; 101, cover plate; 110, base; 120, first chamber; 130, second chamber; 140, third chamber; 150, support seat; 160, discharge port; 170, second elastic member; 200, rotating cylinder; 201, main cylinder body; 202, material dividing body; 203, through-port; 210, feed cylinder; 220, blocking block; 300, sieve net; 310, main sieve; 320, connecting belt; 330, discharge net; 340, discharge cylinder; 350, sieve frame; 360, first magnet; 370, second magnet; 400, sieve plate; 500, collecting plate; 600, first motor; 610, upper eccentric block; 620, lower eccentric block. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The present invention provides an embodiment of a purple sand fine material screening device, such as Figures 1 to 10 shown.

[0034] A purple sand fine material screening device is used for screening purple sand fine material, which is referred to as material hereinafter, and comprises a shell 100, a rotating drum 200, a screening net 300, a first collecting piece and a second collecting piece.

[0035] The rotating drum 200 is installed in the housing 100 and can rotate in the housing 100 in a first direction, the first direction being a vertical direction. A feeding drum 210 is coaxially arranged on the rotating drum 200, the feeding drum 210 is arranged along the first direction and extends out of the housing 100, and materials can enter from the feeding drum 210. The feeding drum 210 is connected to the rotating drum 200. When in use, the material is poured into the feeding drum 210, and after entering the feeding drum 210, the material will enter the rotating drum 200.

[0036] The screen mesh 300 is installed in the housing 100, and is located on the side of the rotating drum 200 away from the feed drum 210 in the first direction. The screen mesh 300 includes a main screen mesh 310, a connecting belt 320, and a discharge mesh 330 arranged in sequence along the second direction, the second direction is perpendicular to the first direction, and the second direction is the radial direction of the rotating drum 200. The main screen mesh 310 is located on the side of the connecting belt 320 away from the central axis of the rotating drum 200 in the second direction. The main screen mesh 310 is annular and can reciprocate in the housing 100 along the first direction, and the discharge mesh 330 is fixedly installed in the housing 100, and the main screen mesh 310 and the discharge mesh 330 are connected by the connecting belt 320, and the aperture on the main screen mesh 310 is equal to the aperture on the discharge mesh 330. In the initial state, the connection belt 320 is in a relaxed state and is recessed toward one side of the inner bottom wall of the housing 100 , that is, the connection belt 320 has a margin for being pulled, and the connection belt 320 can be set as a cloth belt.

[0037] The rotating drum 200 rotates in the first direction so that the material can fall from the rotating drum 200 onto the main screen 310, and the material can move along the second direction on the main screen 310 toward the side close to the central axis of the rotating drum 200. The first collecting member and the second collecting member are both installed on the housing 100. The first collecting member is used to collect the material falling from the main screen 310 and the discharge net 330, and the speed at which the material falls from the rotating drum 200 to the screen net 300 is greater than the speed at which the material falls from the main screen 310 to the first collecting member. The second collecting member is used to collect the material passing through the discharge net 330.

[0038] In this embodiment, by setting the housing 100, the rotating drum 200, the screening net 300, the first collecting member and the second collecting member, when in use, after the material enters the rotating drum 200, the rotating drum 200 rotates, and the material will fall from the rotating drum 200 to the screening net 300 under the action of centrifugal force, and collide with the inner wall of the housing 100 or the screening net 300 during the falling process, and the collision is used to play an impact role on the agglomerated material, so that the material has a certain crushing effect, the quality of the material left on the screening net 300 is reduced, and the screening efficiency of the material is improved. And by making the material fall into the rotating drum 200 first, and then fall from the rotating drum 200 to the screening net 300, it can be avoided that a large amount of material falls directly on the screening net 300, causing damage to the screening net 300.

[0039] The material falling from the rotating drum 200 will fall on the main screen 310 and move on the main screen 310 along the second direction to the side close to the central axis of the rotating drum 200. During the movement, the material with a diameter smaller than the aperture of the main screen 310 will fall onto the first collecting member. Since the speed at which the material falls from the rotating drum 200 to the main screen 310 is greater than the speed at which the material falls from the main screen 310 to the first collecting member, the weight of the material on the main screen 310 will increase as the material falls, causing the main screen 310 to gradually move downward under the gravity of the material. The downward movement of the main screen 310 will pull the connecting belt 320 downward, thereby gradually reducing the degree of depression of the connecting belt 320 toward the inner bottom wall of the housing 100. At the same time, the main screen 310 and the discharge net 330 will be misaligned in the first direction to prevent the material with a diameter larger than the aperture of the main screen 310 from entering the second collecting member from the discharge net 330.

[0040] After screening, the agglomerated materials will not be able to pass through the apertures on the main screen 310 due to their large diameter. Therefore, the agglomerated materials will move along the second direction close to the side of the discharge screen 330, and will be restricted in the depression of the connecting belt 320 when passing through the connecting belt 320. As the weight of the material on the main screen 310 changes, the main screen 310 will continue to reciprocate in the first direction and pull the connecting belt 320, thereby exerting a certain pressure on the agglomerated materials in the connecting belt 320, exerting a certain crushing effect on the materials, further processing the agglomerated materials, reducing the quality of the materials finally remaining on the screen net 300, and improving the screening efficiency and screening effect. The crushed materials passing through the connecting belt 320 will fall from the discharge screen 330 to the first collecting piece for collection, and the materials that still cannot be screened will fall on the second collecting piece after passing through the discharge screen 330.

[0041] Furthermore, the discharge net 330 is circular, and the diameter of the discharge net 330 accounts for less than 1 / 2 of the screen net 300. By limiting the diameter of the discharge net 330, the area occupied by the discharge net 330 in the entire screen net 300 can be further limited, so as to avoid the discharge net 330 having an excessively large area and affecting the screening function of the main screen 310.

[0042] In this embodiment, the outer peripheral wall of the rotating drum 200 is arranged close to the inner wall of the shell 100 in the second direction and penetrates the interior of the shell 100, so that the material can be thrown out of the rotating drum 200 and fall onto the screening net 300 under the action of the centrifugal force of the rotating drum 200.

[0043] In this embodiment, the discharge screen 330 and the main screen 310 are eccentrically arranged.

[0044] By eccentrically setting the discharge net 330 and the main screen 310, during the movement of the main screen 310, the main screen 310 pulls the connecting belt 320 to move so that the dimensional change of the connecting belt 320 around the first direction is different, and then the degree of depression of the connecting belt 320 toward the inner bottom wall side of the shell 100 is different, so that the connecting belt 320 can adapt to the agglomerated materials of different diameters.

[0045] In this embodiment, the first collecting member is a screening plate 400, and the second collecting member is a collecting plate 500. Both the screening plate 400 and the collecting plate 500 are arranged in the housing 100. The screening plate 400 and the collecting plate 500 are arranged in sequence in the first direction, and the screening plate 400 is located on the side of the collecting plate 500 close to the screening net 300 in the first direction. A discharge cylinder 340 is fixedly arranged on the discharge net 330. The discharge cylinder 340 is arranged along the first direction and passes through the screening plate 400, and allows the material passing through the discharge cylinder 340 to fall on the collecting plate 500.

[0046] Furthermore, the screening plate 400 is tiltedly disposed in the housing 100 , so that the material can move along the second direction toward a side close to the inner wall of the housing 100 .

[0047] In this embodiment, the main screen 310 is installed in the housing 100 through a first elastic member, the first elastic member is arranged along the first direction, and the first elastic member is a spring. When the weight of the material on the main screen 310 increases and the main screen 310 gradually moves downward under the gravity of the material, the first elastic member will stretch, and after the weight of the material gradually decreases, the main screen 310 will be reset under the action of the first elastic member, thereby realizing the reciprocating movement of the main screen 310 in the housing 100 along the first direction.

[0048] In this embodiment, the rotating cylinder 200 includes a main cylinder body 201 and a plurality of material dividing bodies 202, the main cylinder body 201 is connected to the feeding cylinder 210, the plurality of material dividing bodies 202 are arranged along the second direction, the plurality of material dividing bodies 202 are evenly distributed in the circumferential direction of the main cylinder body 201 and are connected to the main cylinder body 201, and the material dividing bodies 202 have through-holes 203 in the second direction, and each material dividing body 202 is slidably provided with a blocking block 220 on one side away from the main cylinder body 201 along the second direction, and the blocking block 220 has a first state and a second state, when in the first state, the blocking block 220 opens the through-hole 203 on the corresponding material dividing body 202, and when in the second state, the blocking block 220 blocks the through-hole 203 on the corresponding material dividing body 202, and the main screen 310 reciprocates along the first direction, so that the blocking block 220 can switch between the first state and the second state. In the initial state, the blocking block 220 is in the first state.

[0049] Specifically, a screen frame 350 is arranged on the outer peripheral wall of the main screen 310, and the screen frame 350 is arranged along the first direction and is a cylindrical structure. A plurality of blocking mechanisms are arranged on the inner peripheral wall of the screen frame 350, and the plurality of blocking mechanisms are arranged one by one with the plurality of blocking blocks 220. The blocking mechanisms include a first magnet 360 and a second magnet 370, and the first magnet 360 and the second magnet 370 are arranged in sequence along the first direction on the screen frame 350, and the first magnet 360 is located on the side of the second magnet 370 away from the main screen 310 along the first direction. The blocking block 220 includes a first blocking section and a second blocking section, and the first blocking section is arranged along the second direction, and the second blocking section is inclined and fixed to the first blocking section, and the second blocking section can slide on the material dividing body 202 corresponding to the first blocking section. A third magnet is arranged on one end of the first blocking section close to the screen frame 350 along the second direction, and the third magnet has an opposite magnetic pole to the first magnet 360, and the third magnet has the same magnetic pole as the second magnet 370. When the blocking block 220 is in the first state, the third magnet and the second magnet 370 are on the same horizontal plane in the second direction and repel each other. When the blocking block 220 is in the second state, the third magnet and the first magnet 360 are on the same plane in the second direction and attract each other.

[0050] Alternatively, the blocking mechanism includes a first magnetic ring and a second magnetic ring, the first magnetic ring and the second magnetic ring are evenly distributed on the screen frame 350 around the first direction, the first magnetic ring and the second magnetic ring are sequentially arranged along the first direction on the screen frame 350, and the first magnetic ring is located on the side of the second magnetic ring away from the main screen 310 along the first direction. The third magnet has an opposite magnetic pole to the first magnetic ring, and the third magnet has the same magnetic pole as the second magnetic ring. When the blocking block 220 is in the first state, the third magnet and the second magnetic ring are on the same horizontal plane in the second direction and repel each other. When the blocking block 220 is in the second state, the third magnet and the first magnetic ring are on the same plane in the second direction and attract each other.

[0051] Specifically, four material dividing bodies 202 are provided, and the four material dividing bodies 202 are evenly distributed in the circumferential direction of the main cylinder 201 .

[0052] In this embodiment, the blocking block 220 is provided. When in use, the blocking block 220 is in the first state in the initial state. Figure 5 As shown, at this time, the second blocking section is away from the corresponding through-opening 203 in the first direction, so that the corresponding through-opening 203 on the material dividing body 202 is opened, and the third magnet and the second magnet 370 are on the same horizontal plane in the second direction and repel each other, so that the blocking block 220 can maintain the same horizontal plane with the second magnet 370 in the second direction under the action of the second magnet 370.

[0053] When the material falls from the feed barrel 210 onto the main barrel 201, the material will be thrown out from the dividing body 202 under the action of centrifugal force and fall onto the main screen 310. As the material on the main screen 310 continues to increase, the main screen 310 will move downward along the first direction and drive the screen frame 350 to move synchronously, thereby causing the first magnet 360 and the second magnet 370 to move relative to the blocking block 220. During the movement, the repulsive force between the third magnet and the second magnet 370 gradually decreases, and the attractive force between the third magnet and the first magnet 360 gradually increases, thereby enabling the blocking block 220 to gradually slide downward along the through opening 203 under the action of the first magnet 360 until the blocking block 220 blocks the through opening 203 corresponding to it, refer to the attached figure. Figure 7 As shown, at this time, the third magnet and the first magnet 360 are on the same plane in the second direction and attract each other.

[0054] That is, as the material on the main screen 310 gradually increases, when the main screen 310 drives the screen frame 350 to move downward, so that the third magnet switches from being on the same horizontal plane with the second magnet 370 in the second direction to being on the same plane with the first magnet 360 in the second direction, the blocking block 220 will block the through-opening 203, so that the material entering from the feeding barrel 210 cannot fall on the main screen 310 through the rotating barrel 220, which can avoid the continuous falling of the material causing insufficient screening or even blockage. After the material on the main screen 310 gradually decreases, the screen frame 350 is reset by the main screen 310, and then the attraction between the first magnet 360 and the third magnet is used to make the blocking block 220 gradually leave the through-opening 203 during the upward reset of the main screen 310, and continue to unload the material. This reciprocating process realizes automatic unloading and stopping of the material, thereby improving the screening effect.

[0055] In this embodiment, a purple sand fine material screening device also includes a power mechanism, which includes a first motor 600, an upper eccentric block 610 and a lower eccentric block 620. The first motor 600 is fixedly installed in the housing 100 and is located on a side of the material collecting plate 500 away from the screening plate 400 along the first direction, and both ends of the first motor 600 along the first direction have output shafts. The upper eccentric block 610 and the lower eccentric block 620 are respectively installed on the two output shafts of the first motor 600 along the first direction, and the upper eccentric block 610 is located on a side of the lower eccentric block 620 close to the material collecting plate 500 along the first direction. The phase angle between the upper eccentric block 610 and the lower eccentric block 620 is 90°.

[0056] In this embodiment, a cover plate 101 is provided on the housing 100, and the feed barrel 210 passes through the cover plate 101 along the first direction. A base 110 is provided at the bottom of the housing 100, and the base 110 is connected to the housing 100 through a plurality of second elastic members 170, and the plurality of second elastic members 170 are evenly distributed around the first direction, and the second elastic members 170 play a role of shock absorption during the screening process. The second elastic member 170 is a spring.

[0057] Specifically, the housing 100 includes a first chamber 120, a second chamber 130, a third chamber 140 and a support seat 150. The first chamber 120, the second chamber 130, the third chamber 140 and the support seat 150 are sequentially arranged and fixedly connected in the first direction. The support seat 150 and the base 110 are connected through a plurality of second elastic members 170. The first motor 600 is fixedly mounted on the support seat 150. The cover plate 101 is arranged on the first chamber 120, the screen mesh 300 is located in the first chamber 120, the screen plate 400 is located in the second chamber 130, the collecting plate 500 is located in the third chamber 140, and the discharge barrel 340 passes through the screen plate 400 in the first direction and then extends into the third chamber 140. The second chamber 130 and the third chamber 140 are both provided with a discharge port 160.

[0058] In this embodiment, a mounting frame is provided on the cover plate 101, a second motor is provided on the mounting frame, a first pulley is provided on the output shaft of the second motor, a second pulley is coaxially and fixedly provided on the feed barrel 210, and the first pulley and the second pulley are connected by a conveyor belt.

[0059] When in use, the feed barrel 210 drives the rotating barrel 200 to rotate in the first direction, thereby realizing the ejection of the material. When the feed barrel 210 rotates, the centrifugal force generated by the rotation of the feed barrel 210 can also cause the material to collide with the wall of the feed barrel 210 to a certain extent, which is conducive to crushing the agglomerated material.

[0060] In combination with the above embodiments, the specific working process is as follows:

[0061] When in use, the first motor 600 and the second motor are started first. The start of the first motor 600 will cause the entire purple sand fine material screening device to perform a rotational vibration motion, and the start of the second motor will drive the rotating drum 200 to rotate around the first direction.

[0062] The material is poured into the feed barrel 210. After entering the feed barrel 210, the material will enter the rotating barrel 200, and the blocking block 220 is in the first state in the initial state. Figure 5 As shown, at this time, the second blocking section is away from the corresponding through-opening 203 in the first direction, so that the corresponding through-opening 203 on the material dividing body 202 is opened, and the third magnet and the second magnet 370 are on the same horizontal plane in the second direction and repel each other, so that the blocking block 220 can maintain the same horizontal plane with the second magnet 370 in the second direction under the action of the second magnet 370.

[0063] As the rotating drum 200 rotates, the material falls from the rotating drum 200 onto the screen mesh 300 under the action of centrifugal force, and collides with the inner wall of the shell 100 or the screen mesh 300 during the falling process, thereby utilizing the collision to impact the agglomerated material, thereby causing the material to be crushed to a certain extent.

[0064] The material falling from the rotating drum 200 will fall on the main screen 310 and move on the main screen 310 along the second direction toward the side close to the central axis of the rotating drum 200. During the movement, the material with a diameter smaller than the aperture of the main screen 310 will fall onto the screen plate 400. Since the speed at which the material falls from the rotating drum 200 to the main screen 310 is greater than the speed at which the material falls from the main screen 310 to the screen plate 400, the weight of the material on the main screen 310 will increase as the material falls, causing the main screen 310 to gradually move downward under the action of the gravity of the material. The downward movement of the main screen 310 will pull the connecting belt 320 downward, thereby causing the degree of depression of the connecting belt 320 toward the inner bottom wall of the shell 100 to gradually decrease. At the same time, the main screen 310 and the discharge screen 330 are displaced in the first direction to prevent materials with a diameter larger than the aperture of the main screen 310 from falling onto the collecting plate 500 after entering the discharge cylinder 340 through the discharge screen 330 .

[0065] After screening, the agglomerated material will not be able to pass through the aperture on the main screen 310 due to its large diameter. Therefore, the agglomerated material will move along the second direction close to the side of the discharge net 330, and will be restricted in the depression of the connecting belt 320 when passing through the connecting belt 320. As the weight of the material on the main screen 310 changes, the main screen 310 will continue to reciprocate in the first direction and pull the connecting belt 320, thereby exerting a certain pressure on the agglomerated material in the connecting belt 320, exerting a certain crushing effect on the material, and further processing the agglomerated material, thereby reducing the mass of the material finally remaining on the screen net 300, and improving the screening efficiency and screening effect.

[0066] The crushed materials after the connecting belt 320 will fall from the discharging net 330 to the screening plate 400 for collection, and the materials that are still not crushed will enter the discharging cylinder 340 under the action of the rotary vibration, and fall from the discharging cylinder 340 to the collecting plate 500. The materials that are screened after the screening plate 400 are discharged from the corresponding discharging port 160. The remaining materials after the collecting plate 500 are discharged from the corresponding discharging port 160.

[0067] When the main screen 310 gradually moves downward under the action of the gravity of the material, it will drive the screen frame 350 to move synchronously, thereby causing the first magnet 360 and the second magnet 370 to move relative to the blocking block 220. During the movement, the repulsive force between the third magnet and the second magnet 370 gradually decreases, and the attractive force between the third magnet and the first magnet 360 gradually increases, thereby enabling the blocking block 220 to gradually slide downward along the through-hole 203 under the action of the first magnet 360 until the blocking block 220 blocks the through-hole 203 corresponding to it. Figure 7 As shown, at this time, the third magnet and the first magnet 360 are on the same plane in the second direction and attract each other. That is, when the main screen 310 drives the screen frame 350 to move downward, so that the third magnet switches from being on the same horizontal plane with the second magnet 370 in the second direction to being on the same plane with the first magnet 360 in the second direction, the blocking block 220 will block the through-hole 203, thereby preventing the material entering from the feed barrel 210 from falling on the main screen 310 through the rotating barrel 220. In the process of the main screen 310 resetting upward, the blocking block 220 gradually leaves the through-hole 203 and continues to discharge the material. This reciprocating process realizes automatic discharge and stopping of the material, and improves the screening effect.

[0068] The present invention also provides a method for using a purple sand fine material screening device, using the above-mentioned purple sand fine material screening device, comprising the following steps:

[0069] S100, pour the material into the feed cylinder 210 and drive the rotating cylinder 200 to rotate in the first direction, and drive the purple sand fine material screening device to perform a rotary vibration motion; the rotating cylinder 200 rotates in the first direction to throw the material onto the main screen 310, and moves along the second direction on the main screen 310 to the side close to the central axis of the rotating cylinder 200, and the material with a diameter smaller than the aperture of the main screen 310 will be screened onto the first collecting member;

[0070] S200, driving the main screen 310 to reciprocate along the first direction, so that the blocking block 220 switches between the first state and the second state, and pulling the connecting belt 320 to crush the agglomerated materials;

[0071] S300, the material that has been crushed by the connecting belt 320 and has a diameter smaller than the aperture of the discharge net 330 will be screened from the discharge net 330 to the screen plate 400, and the material that still cannot be screened will fall on the second collecting piece after passing through the discharge net 330 and the discharge cylinder 340.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A purple sand fine material screening device, characterized in that: The cam is configured to move the feed material from one end of the roll to the other end of the roll, and the cam is configured to move the feed material from one end of the roll to the other end of the roll, wherein the cam is configured to move the feed material from one end of the roll to the other end of the roll. And the material can move on the main screen along the second direction to the side close to the central axis of the rotating cylinder; the first collecting piece and the second collecting piece are both installed on the shell, the first collecting piece is used to collect the material falling from the main screen and the discharge net, and the speed of the material falling from the rotating cylinder to the screen net is greater than the speed of the material falling from the main screen to the first collecting piece, the second collecting piece is used to collect the material passing through the discharge net, the first collecting piece is a screen plate, and the second collecting piece is a collecting plate, the screen plate and the collecting plate are both arranged in the shell, the screen plate and the collecting plate are arranged in sequence in the first direction, and the screen plate is located on the side of the collecting plate close to the screen net in the first direction; a discharge barrel is fixedly arranged on the discharge net, the discharge barrel is arranged along the first direction and passes through the screen plate, and allows the material passing through the discharge barrel to fall on the collecting plate; the main screen continuously reciprocates in the first direction and pulls the connecting belt, thereby generating a certain pressure on the agglomerated material in the connecting belt, and generating a certain crushing effect on the material.

2. A purple sand fine material screening device according to claim 1, characterized in that: The outer peripheral wall surface of the rotating drum penetrates the interior of the shell.

3. A purple sand fine material screening device according to claim 1, characterized in that: The discharge screen and the main screen are set eccentrically.

4. A purple sand fine material screening device according to claim 1, characterized in that: The main screen is installed in the shell through a first elastic member, and the first elastic member is arranged along a first direction.

5. The purple sand fine material screening device according to claim 1, characterized in that: The rotating cylinder includes a main cylinder body and multiple material dividing bodies, the main cylinder body is connected with the feeding cylinder, the multiple material dividing bodies are arranged along the second direction, the multiple material dividing bodies are evenly distributed in the circumferential direction of the main cylinder body and are connected with the main cylinder body, and the material dividing bodies have through openings in the second direction, and each material dividing body is slidably provided with a blocking block on the side away from the main cylinder body along the second direction; the blocking block has a first state and a second state, when in the first state, the blocking block opens the through opening on the corresponding material dividing body; when in the second state, the blocking block blocks the through opening on the corresponding material dividing body, and the main screen moves back and forth along the first direction, so that the blocking block can switch between the first state and the second state, and the blocking block is in the first state in the initial state.

6. A purple sand fine material screening device according to claim 5, characterized in that: A screen frame is arranged on the outer peripheral wall of the main screen, the screen frame is arranged along the first direction and is a cylindrical structure, a plurality of blocking mechanisms are arranged on the inner peripheral wall of the screen frame, the plurality of blocking mechanisms are arranged one by one corresponding to the plurality of blocking blocks, the blocking mechanism comprises a first magnet and a second magnet, the first magnet and the second magnet are arranged in sequence on the screen frame along the first direction, and the first magnet is located on the side of the second magnet away from the main screen along the first direction; the blocking block comprises a first blocking section and a second blocking section, the first blocking section is arranged along the second direction, the second blocking section is inclined and fixedly connected to the first blocking section, and the second blocking section can slide on the material dividing body arranged corresponding to it; a third magnet is arranged on one end of the first blocking section close to the screen frame along the second direction, the third magnet has opposite magnetic poles to the first magnet, and the third magnet has the same magnetic poles as the second magnet; when the blocking block is in the first state, the third magnet and the second magnet are on the same horizontal plane in the second direction and repel each other; when the blocking block is in the second state, the third magnet and the first magnet are on the same plane in the second direction and attract each other.

7. The purple sand fine material screening device according to claim 1, characterized in that: It also includes a power mechanism, which includes a first motor, an upper eccentric block and a lower eccentric block, and the first motor has an output shaft at both ends along the first direction; the upper eccentric block and the lower eccentric block are respectively installed on the two output shafts of the first motor along the first direction, and the phase angle between the upper eccentric block and the lower eccentric block is 90°.

8. The purple sand fine material screening device according to claim 1, characterized in that: A cover plate is arranged on the shell, and the feed barrel passes through the cover plate along the first direction; a base is arranged at the bottom of the shell, and the base is connected to the shell through a plurality of second elastic members, and the plurality of second elastic members are evenly distributed around the first direction.

9. A method for using a purple sand fine material screening device, characterized in that: The purple sand fine material screening device according to any one of claims 1 to 8 comprises the following steps: S100, pouring the material into the feed cylinder and driving the rotating cylinder to rotate around the first direction, while driving the purple sand fine material screening device to perform a rotary vibration motion; the rotating cylinder rotates around the first direction to throw the material onto the main screen, and moves along the second direction on the main screen to the side close to the central axis of the rotating cylinder, and the material with a diameter smaller than the aperture of the main screen will be screened onto the first collecting member; S200, driving the main screen to reciprocate along the first direction, so that the blocking block switches between the first state and the second state, and pulling the connecting belt to crush the agglomerated materials; S300, the material that has been crushed by the connecting belt and has a diameter smaller than the aperture of the discharge net will be screened from the discharge net to the screen plate, and the material that still cannot be screened will fall on the second collecting piece after passing through the discharge net and the discharge barrel.

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