A motion trajectory adjustable vibrating screening device and a screening method

Abstract

In the field of vibrating screening machines, the present application provides a vibrating screening device with adjustable motion trajectory and a screening method, comprising a screen box, a support seat, eccentric blocks, a motor connecting shaft, a rotating motor, a belt, a lifting frame and a vibrating motor. The bottom of the screen box is installed on the support seat, multiple layers of screen meshes are arranged in parallel on the screen box, and one eccentric block is arranged on each of the opposite two outer side walls of the screen box. The other end of the belt is connected with a belt connecting wheel on the motor connecting shaft, and the rotating motor drives the two eccentric blocks to rotate through the belt. The lifting frame is installed on the side end opening end of the screen box, the vibrating motor is installed on the lifting frame, and the height of the vibrating motor can be adjusted by the lifting frame. When the rotating motor rotates and the vibrating motor rotates forward, the material to be screened moves in an elliptical trajectory. When the rotating motor rotates and the vibrating motor rotates reversely, the material to be screened moves in a straight line trajectory and an elliptical trajectory, so that the motion trajectory of the screening machine can be flexibly adjusted, and the working efficiency of the screening machine is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vibrating screening machines, in particular to a vibrating screening device with adjustable motion trajectory and a screening method. BACKGROUND

[0002] The screening machines on the market are mostly produced according to fixed models and put into use. In the early design stage, they are mostly designed according to a certain specific screening material or motion trajectory. After production, they only have a fixed running trajectory and cannot be adjusted according to different screening materials. The motion trajectory of the screening box cannot be adjusted, resulting in a relatively single function of the screening machine and the inability to achieve "one machine with multiple screens" and "one machine with multiple uses".

[0003] During the operation of the screening machine, different materials often need different motion trajectories of the screening box for screening. The motion trajectory of a single screening machine is relatively fixed, and the screening efficiency is low when facing different materials, causing waste of energy and poor economy, and failing to achieve the effect of a vibrating screening machine producing multiple motion trajectories.

[0004] The existing vibrating screening machine has a single running trajectory, and the main problems are: 1. Since there is only one motion trajectory during design, only specific materials can have good screening effect, and the motion trajectory cannot be adjusted according to different materials, resulting in low screening efficiency. 2. The original vibrating screen motor has only one working mode, and the motor speed and direction cannot be adjusted. 3. The screen is single-layer and the aperture size does not change, and it cannot be adjusted and selected according to different screening materials, resulting in poor screening effect. SUMMARY

[0005] The present application aims to at least solve one of the technical problems in the related art. The present application provides a vibrating screening device with adjustable motion trajectory and a screening method, which can flexibly adjust the motion trajectory of the screening machine, improve the working efficiency of the screening machine, bring significant economic benefits, and the specific technical solutions are as follows:

[0006] A vibrating screening device with adjustable motion trajectory, comprising:

[0007] A screening box and a support seat, the bottom of the screening box is installed on the support seat, the screening box is provided with multiple layers of screen parallelly, the screen is parallel to the bottom surface of the screening box, and the side end of one side of the screening box is provided with an opening, and the screening box is inclined upward from the opening of the side end of the screening box to the opposite side of the opening.

[0008] An eccentric block, one eccentric block is arranged on each of the opposite two outer side walls of the screening box.

[0009] A motor connecting shaft, the motor connecting shaft connects the two eccentric blocks, and one end of the motor connecting shaft is provided with a belt connecting wheel.

[0010] a rotating motor and a belt, one end of the belt is connected with the output end of the rotating motor, the other end of the belt is connected with the belt connecting wheel on the motor connecting shaft, the rotating motor drives the two eccentric blocks to rotate through the belt;

[0011] a lifting frame and a vibrating motor, the lifting frame is installed at the open end of the side end of the screen box, the vibrating motor is installed on the lifting frame, the lifting frame can adjust the height of the vibrating motor;

[0012] wherein the rotating speed of the rotating motor is equal to the rotating speed of the vibrating motor;

[0013] when the rotating motor rotates and the vibrating motor rotates forward, the vibrating force generated by the two eccentric blocks drives the material to be screened to move in an elliptical trajectory;

[0014] when the rotating motor rotates and the vibrating motor rotates reversely, the vibrating force generated by the two eccentric blocks drives the material to be screened to move in a straight line trajectory and an elliptical trajectory.

[0015] Optionally, the lifting frame comprises a rotating shaft, a right-angle U-shaped rotating frame and an industrial gear box;

[0016] the rotating shaft is installed at the open end of the side end of the screen box, and the two ends of the rotating shaft are respectively penetrated through the opposite two side walls of the screen box;

[0017] the two longitudinal beams of the right-angle U-shaped rotating frame are respectively connected with the two ends of the rotating shaft, and the vibrating motor is installed on the cross beam of the right-angle U-shaped rotating frame;

[0018] the output end of the industrial gear box is connected with the rotating shaft;

[0019] when the output end of the industrial gear box drives the rotating shaft to rotate, the two longitudinal beams of the right-angle U-shaped rotating frame rotate around the axis of the rotating shaft as the center, and the vibrating motor rotates around the rotating shaft to adjust the height of the vibrating motor.

[0020] Optionally, the lifting frame further comprises a gear box moving table and a pin shaft;

[0021] the industrial gear box is installed on the gear box moving table;

[0022] the two ends of the rotating shaft are respectively fixed on the side walls of the screen box through the pin shafts, and the number of pin shafts for fixing the rotating shaft on each side wall is eight;

[0023] When the position of the oscillating motor needs to be adjusted, the gear box moving frame is moved to move the industrial gear box to a target position, the industrial gear box is driven to rotate the rotating shaft to move the oscillating motor to the destination, and each pin is inserted into the corresponding position to fix the rotating shaft where the oscillating motor is located after reaching the destination.

[0024] Optionally, the number of support seats is four.

[0025] Optionally, the height of the two support seats installed at the bottom of the sieve box and away from the side end opening of the sieve box is equal, the height of the two support seats installed at the bottom of the sieve box and close to the side end opening of the sieve box is equal, and the height of the two support seats away from the side end opening of the sieve box is higher than that of the two support seats close to the side end opening of the sieve box.

[0026] Optionally, the device further comprises a connecting plate assembly and a spring, and the number of connecting plate assemblies is equal to the number of support seats.

[0027] The upper surface of the support seat is provided with a first limiting column, the bottom of the connecting plate assembly is provided with a second limiting column, the connecting plate assembly is arranged on the side wall of the sieve box, and each support seat is located above a group of connecting plate assemblies.

[0028] On one of the support seats, one end of the spring is sleeved on the first limiting column, and the other end of the spring is sleeved on the second limiting column.

[0029] Optionally, the connecting plate assembly comprises a mounting plate, a flange bushing, a flange plate, a lower bushing, and a bottom plate.

[0030] The mounting plate is mounted on the side wall of the sieve box, the plate surface of the mounting plate is in contact with the side wall of the sieve box, and two vertical ears are arranged on the connecting plate perpendicular to the plate surface of the mounting plate.

[0031] The two mounting ears of the flange bushing are connected with the two vertical ears of the mounting plate, respectively.

[0032] One end of the flange plate is fixedly mounted on the side wall of the sieve box, the other end of the flange plate is mounted at the arc-shaped opening of the flange bushing, and the arc-shaped opening of the flange bushing is buckled on the cylindrical end portion of the flange plate.

[0033] The lower bushing is mounted on the column of the flange plate, the bottom plate is arranged at the bottom of the lower bushing, and the lower bushing and the bottom plate are integrally arranged.

[0034] The second limiting column is mounted on the bottom surface of the bottom plate, the number of second limiting columns is equal to the number of first limiting columns, and the number of second limiting columns is two.

[0035] Optionally, the device further comprises an elastic base, a motor support, a tensioning wheel and a tensioning support;

[0036] The elastic base is installed on the motor support;

[0037] The rotating motor is installed on the elastic base, and the elastic base moves with the vibration of the screen box when the screen box vibrates;

[0038] The tensioning wheel is arranged on the tensioning support, and the tensioning support is installed on the motor support.

[0039] Optionally, the elastic base comprises a lower base, an upper base, a first connecting arm, a second connecting arm and an intermediate segment;

[0040] The lower base is installed on the upper surface of the motor support, the upper base is arranged directly above the lower base, and the upper base is spaced apart from the lower base by a preset distance;

[0041] The length of the intermediate segment is longer than the preset distance between the upper base and the lower base, the intermediate segment is arranged vertically and on the side of the space between the upper base and the lower base;

[0042] One end of the first connecting arm is connected to the lower base, and the other end of the first connecting arm is connected to the bottom end of the intermediate segment;

[0043] One end of the second connecting arm is connected to the upper base, and the other end of the second connecting arm is connected to the top end of the intermediate segment;

[0044] When the screen box vibrates, the intermediate segment of the elastic base moves up and down with the vibration of the screen box, the intermediate segment drives the upper base through the second connecting arm, and the rotating motor moves with the screen box.

[0045] Optionally, the screen is arranged in three layers, and the aperture of the three layers of the screen decreases from top to bottom.

[0046] A motion trajectory adjustable vibration screening method, applied to the motion trajectory adjustable vibration screening device, comprising the following steps:

[0047] Four support seats are built on the foundation, and the screen box is installed on the support seats through the connecting plate assembly and the spring;

[0048] The working state of the screen box is adjusted to an unpowered state, the gear box moving platform is pushed to the side of the screen box to make the output shaft of the industrial gear box butt joint with the rotating shaft, the industrial gear box drives the rotating shaft to rotate until the oscillation motor rotates to the target position, the position of the oscillation motor is fixed by fixing the rotating shaft through the pin shaft, and the gear box moving platform is removed;

[0049] According to the requirement, the working mode is selected, and the working mode includes mode one and mode two:

[0050] Mode one: the rotating motor rotates, and when the exciting motor rotates forward, the exciting forces generated by the two eccentric blocks drive the material to be screened to move in an elliptical trajectory;

[0051] Mode two: the rotating motor rotates, and when the exciting motor rotates reversely, the exciting forces generated by the two eccentric blocks drive the material to be screened to move in a straight line trajectory and an elliptical trajectory;

[0052] The support seat close to the side end opening end of the screen box is connected with a hydraulic lifting system, and the hydraulic lifting system drives the lifting of the two support seats close to the side end opening end of the screen box to adjust the included angle between the bottom surface of the screen box and the horizontal plane;

[0053] The hydraulic lifting system adjusts the included angle between the bottom surface of the screen box and the horizontal plane in the range of 5°.

[0054] The technical scheme provided by the embodiment of the application has at least the following beneficial effects:

[0055] 1. The movement trajectory of the material to be screened in the screen box can be adjusted, the movement trajectory is adjusted by adjusting the position of the exciting motor and the inclination angle of the screen box, the screening effect on the material is better, and the screening efficiency is higher.

[0056] 2. The working mode of the device and the method is various, and the motor direction and the motor speed are controllable.

[0057] 3. The core principle of the application is to change the exciting force direction by changing the position of the exciting motor, and after the change, the resultant force is ensured to pass through the mass center of the screen box, so that the trajectory of the screen box is in a stable state.

[0058] 4. The screen mesh is graded, the aperture size changes in turn, and the screening effect is better.

[0059] 5. In addition to the inclination angle, the exciting motor direction can also be adjusted, so that the screening machine can perform screening work under various trajectories. DETAILED DESCRIPTION

[0060] In order to more clearly illustrate the technical scheme in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0061] Figure 1 The first perspective structural view of the device provided by the application.

[0062] Figure 2 The second perspective view of the device provided by the present application is shown in the figure.

[0063] Figure 3 The internal structure of the sieve box provided by the present application is shown in the figure.

[0064] Figure 4 The structure of the connecting plate assembly provided by the present application is shown in the figure.

[0065] Figure 5 The structure of the upper surface of the support seat provided by the present application is shown in the figure.

[0066] Figure 6 The structure of the elastic base provided by the present application is shown in the figure.

[0067] The figure shows the following: 100, sieve box; 200, support seat; 201, first limiting column; 300, eccentric block; 400, motor connecting shaft; 500, rotating motor; 600, belt; 700, lifting frame; 701, rotating shaft; 702, right-angle U-shaped rotating frame; 703, industrial gear box; 704, pin shaft; 705, gear box moving table; 800, oscillating motor; 900, connecting plate assembly; 901, mounting plate; 902, flange bushing; 903, flange plate; 904, lower bushing; 905, bottom plate; 906, second limiting column; 110, spring; 120, elastic base; 121, upper base; 122, lower base; 123, first connecting arm; 124, second connecting arm; 125, middle section; 130, motor support; 140, tensioning wheel; 150, tensioning support; 160, sieve mesh. DETAILED DESCRIPTION

[0068] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below in combination with the figures of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort belong to the scope of protection of the present application.

[0069] Unless otherwise defined, technical terms or scientific terms used in the present application shall have the same meaning as those commonly understood by a person of ordinary skill in the art to which the present application belongs. The terms "first", "second", and similar terms used in the present application do not denote any order, quantity, or importance, but are used to distinguish different components. Similarly, the terms "one", "a", or "the" and similar terms do not denote a quantity of particular mentioned items, but mean that there is at least one of the items present. The terms "comprise", "comprising", and similar terms mean that the elements or objects listed after the term encompass the elements or objects listed and equivalents thereof, and do not exclude other elements or objects. The terms "connected" or "coupled" and similar terms do not limit to physical or mechanical connections or couplings, but can include electrical connections or couplings, whether direct or indirect.

[0070] It should be noted that the terms "upper", "lower", "left", "right", "front", "back", and the like used in the present application are only used to represent relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships may also change accordingly.

[0071] Due to the above problems in the prior art, the present application provides a vibration screening device with adjustable motion trajectory and a screening method, which specifically includes the following method:

[0072] As shown in Figures 1 to 6 In one aspect, the present application provides a vibration screening device with adjustable motion trajectory, which includes a screen box 100, a support seat 200, an eccentric block 300, a motor connecting shaft 400, a rotating motor 500, a belt 600, a lifting frame 700, and a rocking motor 800.

[0073] The bottom of the screen box 100 is mounted on the support seat 200, the screen box 100 is provided with multiple layers of screen meshes 160 in parallel, the screen meshes 160 are parallel to the bottom surface of the screen box 100, the side end of one side of the screen box 100 is provided with an opening, the screen box 100 is provided in an upwardly inclined manner from the opening of the side end of the screen box 100 to the opposite side end of the screen box 100; one eccentric block 300 is arranged on each of the two opposite outer side walls of the screen box 100; the motor connecting shaft 400 connects the two eccentric blocks 300, one end of the motor connecting shaft 400 is provided with a belt 600 connecting wheel; one end of the belt 600 is connected with the output end of the rotating motor 500, the other end of the belt 600 is connected with the belt 600 connecting wheel on the motor connecting shaft 400, the rotating motor 500 drives the two eccentric blocks 300 to rotate through the belt 600; the lifting frame 700 is mounted on the opening end of the side end of the screen box 100, the oscillating motor 800 is mounted on the lifting frame 700, the lifting frame 700 can adjust the height of the oscillating motor 800; the rotating speed of the rotating motor 500 is equal to the rotating speed of the oscillating motor 800.

[0074] When the rotating motor 500 rotates and the oscillating motor 800 rotates in a forward direction, the oscillating force generated by the two eccentric blocks 300 drives the material to be screened to move in an elliptical trajectory;

[0075] When the rotating motor 500 rotates and the oscillating motor 800 rotates in a reverse direction, the oscillating force generated by the two eccentric blocks 300 drives the material to be screened to move in a straight line trajectory and an elliptical trajectory.

[0076] In a specific embodiment, the screen box 100 is a square structure, the top of the screen box 100 is not sealed, which facilitates the entry of the material to be screened into the material, one side end of the screen box 100 is not sealed as a material outlet of the screen box 100, three layers of screen meshes 160 are arranged in the screen box 100, from top to bottom, the pore sizes of the three layers of screen meshes 160 gradually decrease, the screen meshes 160 are arranged in parallel, and each layer of screen mesh 160 is parallel to the bottom surface of the screen box 100.

[0077] In a specific embodiment, the number of support seats 200 is four, and the heights of the two support seats 200 installed at the bottom of the screen box 100 and away from the side end opening of the screen box 100 are equal, the heights of the two support seats 200 installed at the bottom of the screen box 100 and close to the side end opening of the screen box 100 are equal, and the heights of the two support seats 200 away from the side end opening of the screen box 100 are higher than those of the two support seats 200 close to the side end opening of the screen box 100. Since the screen box 100 needs to have a certain inclination angle, that is, the side of the screen box 100 and the material outlet end of the screen box 100 are arranged to be inclined downward, the heights of the two support seats 200 close to the material outlet end are lower than those of the other two support seats 200.

[0078] In a specific embodiment, the device further comprises a connecting plate assembly 900 and a spring 110, the number of the connecting plate assembly 900 is equal to the number of the support seat 200; the upper surface of the support seat 200 is provided with a first limiting column 201, the bottom of the connecting plate assembly 900 is provided with a second limiting column 906, the connecting plate assembly 900 is arranged on the side wall of the screen box 100, and each support seat 200 is correspondingly provided with a group of connecting plate assemblies 900; one end of the spring 110 is sleeved on the first limiting column 201, and the other end of the spring 110 is sleeved on the second limiting column 906.

[0079] In a specific embodiment, the lifting frame 700 comprises a rotating shaft 701, a right-angle U-shaped rotating frame 702, and an industrial gear box 703; the rotating shaft 701 is installed at the side end opening end of the screen box 100, and the two ends of the rotating shaft 701 are respectively penetrated through the opposite two side walls of the screen box 100; the two longitudinal beams of the right-angle U-shaped rotating frame 702 are respectively connected with the two ends of the rotating shaft 701, and the cross beam of the right-angle U-shaped rotating frame 702 is installed with the oscillation motor 800; the output end of the industrial gear box 703 is connected with the rotating shaft 701; when the output end of the industrial gear box 703 drives the rotating shaft 701 to rotate, the two longitudinal beams of the right-angle U-shaped rotating frame 702 rotate around the axis of the rotating shaft 701 as the rotation center, and the oscillation motor 800 rotates around the rotating shaft 701 to adjust the height of the oscillation motor 800, and the industrial gear box 703 is a prior art.

[0080] The lifting frame 700 further comprises a gear box moving table 705 and a pin shaft 704; the industrial gear box 703 is installed on the gear box moving table 705; the two ends of the rotating shaft 701 are fixed on the side walls of the sieve box 100 through the pin shaft 704 respectively, and the number of the pin shaft 704 for fixing the rotating shaft 701 on each side wall is 8; when the position of the oscillation motor 800 needs to be adjusted, the gear box moving frame is moved to move the industrial gear box 703 to the target position, the rotating shaft 701 driven by the industrial gear box 703 is rotated to move the oscillation motor 800 to the destination, and each plug pin is inserted into the corresponding position to fix the rotating shaft 701 where the oscillation motor 800 reaches the destination.

[0081] In a specific embodiment, the connecting plate assembly 900 comprises a mounting plate 901, a flange bushing 902, a flange plate 903, a lower bushing 904 and a bottom plate 905; the mounting plate 901 is installed on the side wall of the sieve box 100, the plate surface of the mounting plate 901 is attached to the side wall of the sieve box 100, and two vertical ears are provided on the connecting plate perpendicular to the plate surface of the mounting plate 901; the two mounting ears of the flange bushing are connected with the two vertical ears of the mounting plate 901 respectively; one end of the flange plate 903 is fixedly installed on the side wall of the sieve box 100, and the other end of the flange plate 903 is installed at the arc-shaped opening of the flange bushing, and the arc-shaped opening of the flange bushing is buckled on the cylindrical end of the flange plate 903; the lower bushing 904 is installed on the column of the flange plate 903, the bottom plate 905 is arranged at the bottom of the lower bushing 904, and the lower bushing 904 and the bottom plate 905 are integrally arranged; the second limiting column 906 is installed on the bottom surface of the bottom plate 905, the number of the second limiting column 906 is equal to that of the first limiting column 201, and the number of the second limiting column 906 is two, wherein the specific structure of the flange plate 903 can refer to the structure of the connecting mechanism of the flange plate 903 disclosed in the publication No. CN218523175U.

[0082] The device further comprises an elastic base 120, a motor support 130, a tensioning wheel 140 and a tensioning support 150; the elastic base 120 is installed on the motor support 130; the rotating motor 500 is installed on the elastic base 120, and when the sieve box 100 vibrates, the elastic base 120 moves with the vibration of the sieve box 100; the tensioning wheel 140 is arranged on the tensioning support 150, and the tensioning support 150 is installed on the motor support 130.

[0083] The elastic base 120 comprises a lower base 122, an upper base 121, a first connecting arm 123, a second connecting arm 124 and an intermediate segment 125; the lower base 122 is mounted on the upper surface of the motor support 130, the upper base 121 is arranged directly above the lower base 122, and the upper base 121 is spaced apart from the lower base 122 by a preset distance; the length of the intermediate segment 125 is longer than the preset distance between the upper base 121 and the lower base 122, the intermediate segment 125 is arranged vertically and on the side of the space between the upper base 121 and the lower base 122; one end of the first connecting arm 123 is connected with the lower base 122, and the other end of the first connecting arm 123 is connected with the bottom end of the intermediate segment 125; one end of the second connecting arm 124 is connected with the upper base 121, and the other end of the second connecting arm 124 is connected with the top end of the intermediate segment 125; when the screen box 100 vibrates, the intermediate segment 125 of the elastic base 120 moves up and down following the vibration of the screen box 100, the intermediate segment 125 drives the upper base 121 through the second connecting arm 124, and the rotating motor 500 follows the screen box 100.

[0084] The specific principle of the device is that the rotation shaft 701 can be rotated through the industrial gear box 703 to realize the movement of the oscillation motor 800 along an arc trajectory, and the oscillation motor 800 can work at multiple angles or in forward and reverse modes. The rotating motor 500 is supported by the elastic base 120 and remains follow-up when the screening machine vibrates, drives the eccentric block 300 to rotate to generate a vibration force through belt transmission, and sets the tensioning wheel 140. The direction of the resultant force of the two vibration forces changes with the change of the position of the oscillation motor 800, and the resultant force always passes through the mass center of the screen box 100. The screen box 100 is connected to the support base through eight springs 110, and the support base at the feeding end can be slightly raised and lowered to adjust the overall inclination angle of the screen box 100. The screen box 100 is composed of three layers of screen meshes 160, each layer of screen mesh 160 has different hole diameters, and can perform step-by-step screening on the materials to achieve the optimal screening effect. The vibration source of the screening machine is that the oscillation motor 800 and the rotating motor 500 drive two eccentric blocks 300 to rotate, the rotating motor 500 is fixed relative to the position of the screen box 100, and the elastic base 120 is installed below, and the position of the oscillation motor 800 is adjustable.

[0085] The eccentricity of the eccentric block 300 arranged in the oscillation motor 800 and the eccentric block 300 driven by the rotating motor 500 is equal.

[0086] When facing different materials and screening requirements, the support base at the feeding end can adjust the inclination angle of the screen box 100 by lifting to change the throwing speed and conveying speed of the materials in the screening process.

[0087] The top layer of screen mesh 160 has the largest aperture, responsible for preliminary filtration, and the aperture of the middle layer and the bottom layer of screen mesh 160 gradually decreases, and the aperture gradually decreases along the direction from the feeding end to the discharging end, and the multi-layer combination of the screen mesh 160 optimizes the material screening effect.

[0088] The inclination angle of the screen box 100 can be adjusted by lifting the feeding end support base, and since the rotating motor 500 is fixed in position, the rotating motor 500 drives the eccentric blocks 300 through belt transmission, and the position of the tensioning wheel 140 needs to be adjusted to ensure that the belt 600 is tensioned.

[0089] The application provides a motion trajectory adjustable vibration screening method in another aspect, which is applied to the motion trajectory adjustable vibration screening device and includes the following steps:

[0090] Four support bases are built on the foundation, and the screen box is installed on the support bases through the connecting plate assembly and the springs;

[0091] The working state of the screen box is adjusted to an unpowered state, the gear box moving table is pushed to the side of the screen box to make the output shaft of the industrial gear box butt joint with the rotating shaft, the industrial gear box drives the rotating shaft to rotate until the oscillation motor rotates to the target position, the position of the oscillation motor is fixed through the pin shaft fixing the rotating shaft, and the gear box moving table is removed;

[0092] The working mode is selected according to requirements, and the working mode includes mode one and mode two:

[0093] Mode one: the rotating motor rotates, and when the oscillation motor rotates forward, the oscillation forces generated by the two eccentric blocks drive the material to be screened to move in an elliptical trajectory;

[0094] Mode two: the rotating motor rotates, and when the oscillation motor rotates reversely, the oscillation forces generated by the two eccentric blocks drive the material to be screened to move in a straight line trajectory and an elliptical trajectory;

[0095] The two support bases close to the side end opening ends of the screen box are connected with the hydraulic lifting system, and the hydraulic lifting system drives the lifting of the two support bases close to the side end opening ends of the screen box to adjust the included angle between the bottom surface of the screen box and the horizontal plane;

[0096] The range of the included angle between the bottom surface of the screen box and the horizontal plane adjusted by the hydraulic lifting system is 5°.

[0097] The hydraulic lifting system is a prior art, and can be used to lift the height of the two support bases close to the discharging end of the screen box, but the lifting height is very small, and only the range of the included angle between the bottom surface of the screen box and the horizontal plane can be adjusted to 5°.

[0098] The specific principle of the method for implementing the device is that when the inclination angle of the oscillation motor needs to be changed, first, the screen box is stopped, the industrial gear box is moved to align the rotating shaft, the pin shaft at the connection between the rotating shaft and the screen box is loosened, the industrial gear box is started, the pin shaft is reinserted into the hole after rotating to the required position, and the industrial gear box is removed, so that the inclination angle of the oscillation motor and the direction of the resultant force generated by the two motor-driven eccentric blocks are changed, and then the movement track of the screen box is changed. The oscillation motor has two modes of forward rotation and reverse rotation when it works at each inclination angle. When the oscillation motor rotates forward, the track is an ellipse, and the track changes little with the change of the inclination angle. When the oscillation motor rotates reversely, the track changes greatly, and there are two different tracks of straight line and ellipse, and the vibration direction angle is also different. After the inclination angle of the oscillation motor is adjusted, the running direction of the oscillation motor is determined, and then the screening track is determined. After the inclination angle of the oscillation motor is adjusted, the track is also determined, and the overall inclination angle of the screen box can be changed slightly by lifting the supporting base at the feeding end. The supporting base completes the lifting operation through the hydraulic system, and the adjustment range is about 5°.

[0099] The movement track of the material to be screened in the screen box of the present application can be adjusted by adjusting the position of the oscillation motor and the inclination angle of the screen box. The screening effect on the material is better, and the screening efficiency is higher. The working mode of the device and method of the present application is various, and the motor rotation direction and speed are controllable. The core principle of the present application is to change the direction of the exciting force by changing the position of the oscillation motor, and to ensure that the resultant force passes through the mass center of the screen box after the change, so that the track of the screen box is in a stable state. The screen mesh is arranged in stages in the present application, and the hole diameters change in size. The screening effect is better. In addition to the adjustable inclination angle, the rotation direction of the oscillation motor can also be adjusted, so that the screening machine can perform screening operation under various movement tracks.

[0100] The following points need to be explained:

[0101] (1) The drawings of the embodiments of the present application only involve the structures involved in the embodiments of the present application, and other structures can be referred to the usual design.

[0102] (2) For the sake of clarity, the thickness of the layer or region is enlarged or reduced in the drawings used to describe the embodiments of the present application, that is, the drawings are not drawn according to the actual proportion. It can be understood that when an element such as a layer, a film, a region or a substrate is referred to as being located “on” or “under” another element, the element can be “directly” located on or under another element or there can be an intermediate element.

[0103] (3) In the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other to obtain new embodiments.

[0104] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A vibrating screening device with adjustable motion trajectory, characterized in that, include: The screen box and the support base are provided. The bottom of the screen box is installed on the support base. Multiple layers of screen mesh are arranged in parallel on the screen box. The screen mesh is parallel to the bottom surface of the screen box. One side of the screen box is open. The screen box is inclined upward in the direction from the side opening of the screen box to the opposite side of the side opening of the screen box. An eccentric block is provided on each of the two opposite outer walls of the sieve box; A motor connecting shaft connects two eccentric blocks, and a belt connecting pulley is provided at one end of the motor connecting shaft; A rotating motor and a belt are connected, with one end of the belt connected to the output end of the rotating motor and the other end of the belt connected to the belt connecting pulley on the motor connecting shaft. The rotating motor drives the two eccentric blocks to rotate through the belt. A lifting frame and an oscillating motor are provided. The lifting frame is installed at the side opening of the screen box, and the oscillating motor is installed on the lifting frame. The height of the oscillating motor can be adjusted by the lifting frame. Wherein, the rotational speed of the rotary motor and the rotational speed of the exciter motor are equal; When the rotary motor rotates and the oscillating motor rotates in the forward direction, the oscillating force generated by the two eccentric blocks drives the material to be screened to move in an elliptical trajectory. When the rotary motor rotates and the oscillating motor rotates in the opposite direction, the lifting frame adjusts the height of the oscillating motor, and the oscillating force generated by the two eccentric blocks drives the material to be screened to move in a straight line or an elliptical trajectory. The lifting frame includes: a rotating shaft, a right-angle U-shaped rotating frame, and an industrial gearbox; The rotating shaft is installed at the side opening of the screen box, and the two ends of the rotating shaft pass through the opposite side walls of the screen box respectively. The two longitudinal beams of the right-angle U-shaped rotating frame are respectively connected to the two ends of the rotating shaft, and the exciter motor is installed on the crossbeam of the right-angle U-shaped rotating frame; The output end of the industrial gearbox is connected to the rotating shaft; When the output end of the industrial gearbox drives the rotating shaft to rotate, the two longitudinal beams of the right-angle U-shaped rotating frame rotate around the axis of the rotating shaft, and the oscillating motor rotates around the rotating shaft with the longitudinal beam as the radius to adjust the height of the oscillating motor.

2. The adjustable motion trajectory vibrating screening device according to claim 1, characterized in that, The lifting frame also includes a gearbox moving platform and a pin shaft; The industrial gearbox is mounted on the gearbox moving platform; Both ends of the rotating shaft are fixed to the side wall of the sieve box by the pins, and there are 8 pins on each side wall for fixing the rotating shaft; When the position of the exciter motor needs to be adjusted, the gearbox moving frame is moved to the target position, the industrial gearbox is driven to rotate the shaft to move the exciter motor to the destination, and each of the pins is inserted into the corresponding position to fix the shaft where the exciter motor is located after reaching the destination.

3. The adjustable motion trajectory vibrating screening device according to claim 1, characterized in that, The number of support bases is 4; Among them, the two support seats installed at the bottom of the screen box and away from the side opening of the screen box are of equal height, the two support seats installed at the bottom of the screen box and close to the side opening of the screen box are of equal height, and the two support seats away from the side opening of the screen box are higher than the two support seats close to the side opening of the screen box.

4. The adjustable motion trajectory vibrating screening device according to claim 3, characterized in that, It also includes connecting plate assemblies and springs, the number of which is equal to the number of support seats; The upper surface of the support base is provided with a first limiting post, the bottom of the connecting plate assembly is provided with a second limiting post, the connecting plate assembly is provided on the side wall of the screen box, and a set of connecting plate assemblies corresponds to the top of each support base; On one of the support seats, one end of the spring is sleeved on the first limiting post, and the other end of the spring is sleeved on the second limiting post.

5. The adjustable motion trajectory vibrating screening device according to claim 4, characterized in that, The connecting plate assembly includes: a mounting plate, a flange bearing, a flange, a lower bearing, and a base plate; The mounting plate is installed on the side wall of the sieve box, and the surface of the mounting plate is in contact with the side wall of the sieve box. The connecting plate is provided with two vertical ears perpendicular to the surface of the mounting plate. The two mounting lugs of the flange bearing are respectively connected to the two upright lugs of the mounting plate; One end of the flange is fixedly installed on the side wall of the screen box, and the other end of the flange is installed at the arc-shaped opening of the flange bearing. The arc-shaped opening of the flange bearing is fastened to the cylindrical end of the flange. The lower bearing shell is installed on the column of the flange, and the base plate is set at the bottom of the lower bearing shell. The lower bearing shell and the base plate are integrally formed. The second limiting post is installed on the bottom surface of the base plate. The number of the second limiting post is equal to the number of the first limiting post, and there are two second limiting posts.

6. The adjustable motion trajectory vibrating screening device according to claim 1, characterized in that, It also includes a flexible base, a motor bracket, a tensioning wheel, and a tensioning bracket; The elastic base is mounted on the motor bracket; The rotating motor is mounted on the elastic base. When the screen box vibrates, the elastic base moves in sync with the vibration of the screen box. The tensioning wheel is mounted on the tensioning bracket, and the tensioning bracket is mounted on the motor bracket.

7. The adjustable motion trajectory vibrating screening device according to claim 6, characterized in that, The elastic base includes: a lower base, an upper base, a first connecting arm, a second connecting arm, and a middle section; The lower base is mounted on the upper surface of the motor bracket, and the upper base is positioned directly above the lower base, with a preset distance between the upper base and the lower base; The length of the middle section is longer than the preset distance between the upper base and the lower base, and the middle section is vertically arranged and located on the side of the interval between the upper base and the lower base; One end of the first connecting arm is connected to the lower base, and the other end of the first connecting arm is connected to the bottom end of the middle section; One end of the second connecting arm is connected to the upper base, and the other end of the second connecting arm is connected to the top end of the middle section; When the screen box vibrates, the middle section of the elastic base moves up and down with the vibration of the screen box. The middle section drives the upper base through the second connecting arm to drive the rotating motor to follow the movement of the screen box.

8. The adjustable motion trajectory vibrating screen device according to claim 1, characterized in that, The screen has three layers, with the aperture of the three layers decreasing sequentially from top to bottom.

9. A vibrating screening method with adjustable motion trajectory, characterized in that, The method applied to the adjustable motion trajectory vibrating screening device according to any one of claims 1 to 8 includes the following steps: S1. Construct four support bases on the foundation, and install the screen box on the support bases using connecting plate assemblies and springs; S2. Adjust the working state of the screen box to the off state, push the gearbox moving table to the side of the screen box so that the output shaft of the industrial gearbox is connected to the rotating shaft. The industrial gearbox drives the rotating shaft to rotate until the exciter motor rotates to the target position. Fix the rotating shaft with the pin to fix the position of the exciter motor, and remove the gearbox moving table. S3. Select the working mode according to the requirements. The working modes include Mode 1 and Mode 2: Mode 1: When the rotary motor rotates and the oscillating motor rotates in the forward direction, the oscillating force generated by the two eccentric blocks drives the material to be screened to move in an elliptical trajectory. Mode 2: When the rotary motor rotates and the oscillating motor rotates in the opposite direction, the lifting frame adjusts the height of the oscillating motor, and the oscillating force generated by the two eccentric blocks drives the material to be screened to move in a straight line or an elliptical trajectory. S4. Connect the two support seats near the side openings of the screen box to the hydraulic lifting system. The hydraulic lifting system drives the two support seats near the side openings of the screen box to lift and lower to adjust the angle between the bottom surface of the screen box and the horizontal plane. The hydraulic lifting system adjusts the angle between the bottom surface of the screen box and the horizontal plane within a range of 5°.

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