Screening device for granular materials

Abstract

The utility model discloses a granular material screening device, which belongs to the technical field of particle screening and comprises a screening box, a bearing outer frame horizontally and slidably arranged between two ends of the top of the screening box and a screening plate mounted at the bottom in the bearing outer frame, and a shaking mechanism for controlling the bearing outer frame to slide back and forth is arranged at one end in the screening box. And ejection mechanisms for vertically ejecting out the screening plate are arranged at four corners of the bottom in the bearing outer frame. Ejection mechanisms composed of the first installation grooves, the ejection blocks, the first springs, the second installation grooves, the insertion blocks, the insertion grooves, the second springs and the pull ropes are evenly arranged at the four corners of the bottom of the bearing outer frame, then the top ends of the multiple sets of pull ropes are connected together, the pull blocks are fixed to the top ends of the pull ropes, and therefore when the screening plate is replaced, the screening plate can be replaced conveniently. When the screening device is used, control over the multiple sets of ejection mechanisms can be relieved only by pulling the pull block upwards, the screening plate is ejected, and replacement and disassembly of the screening plate are more convenient.

Description

Technical Field

[0001] The utility model relates to a screening device, in particular to a screening device for granular materials, belonging to the technical field of granular screening. Background Art

[0002] In the prior art, for example, a utility model with application number 202320870888.9 discloses a particle screening device for silicon-based materials. In order to solve the problem that the disassembly and assembly of the screen plate on the current screening device is not convenient enough, which not only increases the work intensity in the disassembly and assembly of the screen plate, but also affects the screening efficiency of the granular raw materials, the screening plate is supported by a bearing outer frame with a convex-shaped through hole in the screening structure, so that the screening plate can be quickly positioned and installed. In combination with the magnetic conductive sheet and the magnet sheet respectively arranged on the inner side of the screening plate and the bearing outer frame, the stability of the screening plate installed in the bearing outer frame can be increased, and at the same time, disassembly and separation are convenient, thereby improving the convenience of disassembly, assembly and replacement of the screening plate in the screening device.

[0003] Similar to the above application, there are still some shortcomings:

[0004] Since the outer frame has a certain depth and the side of the screen plate fits tightly with the inner side of the outer frame, it is necessary to push the screen plate upward from the bottom of the outer frame to remove it, which is inconvenient to disassemble;

[0005] Therefore, a screening device for granular materials is designed to optimize the above problems. Utility Model Content

[0006] The main purpose of the utility model is to provide a screening device for granular materials, by evenly arranging a first installation groove, a top block, a first spring, a second installation groove, an insert block, a slot, a second spring, and an ejection mechanism consisting of a pull rope at the four corners of the bottom of the bearing outer frame, and then connecting the top ends of multiple groups of pull ropes together, and fixing the pull block at the top end of the pull rope, so that when replacing the screening plate, it is only necessary to pull the pull block upward to release the control of the multiple groups of ejection mechanisms and lift the screening plate, making the replacement and disassembly of the screening plate more convenient, and through the shaking mechanism consisting of a motor, a lever, a connecting rod, a slide groove, a slider, a shaft rod, and a screw rod, the sliding of the screening plate can be reciprocatedly controlled during use to perform particle screening. At the same time, the connection position of the lever and the connecting rod can be changed by controlling the rotation of the screw rod, and the shaking amplitude of the screening plate can be adjusted, which is more practical.

[0007] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0008] A screening device for granular materials comprises a screening box, a bearing outer frame horizontally slidably arranged between the two ends of the top of the screening box, and a screening plate installed at the bottom of the bearing outer frame. A shaking mechanism for controlling the reciprocating sliding of the bearing outer frame is provided at one end of the interior of the screening box, and ejection mechanisms for vertically ejecting the screening plate are provided at the four corners of the bottom of the bearing outer frame.

[0009] Preferably, sliding rods are horizontally fixed at both ends of the screening box, sliding sleeves are slidably arranged at both ends of the sliding rods, and the bearing outer frame is fixed between four sets of sliding sleeves.

[0010] Preferably: the shaking mechanism includes a motor, a lever, a connecting rod and a position adjustment assembly, the motor is installed at the inner end of the screening box, the output end of the motor is installed with a lever, the outer side of the lever is rotatably installed with a connecting rod, the top of the connecting rod is hinged to the bottom of the supporting outer frame, and the lever is provided with a position adjustment assembly for controlling the movement of the end of the connecting rod along the length direction of the lever.

[0011] Preferably: the position adjustment component includes a slide groove, a slider, a shaft rod and a screw rod, a slide groove is opened on the lever along the length direction, a slider is slidably arranged inside the slide groove, a screw rod is rotatably installed between the two ends of the slide groove, and one end of the screw rod extends to the outer end of the lever rod, the screw rod is threadedly connected to the slider, a shaft rod is vertically fixed to the outer side of the slider, a hole matching the shaft rod is opened at the end of the connecting rod, and the shaft rod passes through the inside of the hole.

[0012] Preferably: the ejection mechanism includes a first mounting groove, a ejection block, a first spring and a locking assembly, the first mounting groove is vertically opened at the four corners of the inner bottom of the bearing outer frame, the interior of the first mounting groove is vertically slidably provided with an ejection block, a first spring is provided between the bottom end of the ejection block and the inner bottom of the first mounting groove, the sides of the first mounting groove are provided with locking assemblies for positioning the ejection block, and the top of the ejection block and the bottom of the screening plate are provided with magnet blocks that attract each other.

[0013] Preferably: the locking assembly includes a second mounting groove, an insert block, a slot and a second spring, the second mounting groove is opened at the top of the side of the first mounting groove, an insert block is slidably arranged inside the second mounting groove, a slot matching the insert block is opened on the top block, the cross-sectional shape of the insert block is a right-angled trapezoid, a second spring is arranged between the insert block and the inner end of the second mounting groove, and a pulling assembly is arranged at one end of the insert block close to the second spring.

[0014] Preferably: the pulling assembly includes a pull rope and a pull block, and a pull rope is fixed to one end of the plug block close to the second spring. The pull rope passes through the center of the second spring and penetrates into the interior of the load-bearing outer frame. Multiple groups of pull ropes are interconnected and slidably arranged inside the load-bearing outer frame. The top of the pull rope extends to the top of the load-bearing outer frame, and a pull block is fixed to the top of the pull rope.

[0015] The beneficial effects of the utility model are:

[0016] The utility model provides a screening device for granular materials, wherein a first installation slot, a top block, a first spring, a second installation slot, an insert block, a slot, a second spring, and a pull rope are evenly arranged at the four corners of the bottom of the bearing outer frame, and the top ends of multiple groups of pull ropes are connected together, and a pull block is fixed at the top end of the pull rope, so that when the screening plate is replaced, only the pull block needs to be pulled upward to release the control of the multiple groups of ejection mechanisms, and the screening plate is lifted up, so that the replacement and disassembly of the screening plate is more convenient;

[0017] The shaking mechanism composed of a motor, a lever, a connecting rod, a slide groove, a slider, a shaft rod and a screw rod can reciprocately control the sliding of the screen plate during use to perform particle screening. At the same time, by controlling the rotation of the screw rod, the connection position of the lever and the connecting rod can be changed to adjust the shaking amplitude of the screen plate, which is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the front view of the utility model;

[0019] Figure 2 This is a front cross-sectional view of the utility model;

[0020] Figure 3 For the utility model Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 For the utility model Figure 2 Enlarged view of point B in the middle.

[0022] In the figure: 1. screening box; 2. sliding rod; 3. sliding sleeve; 4. bearing outer frame; 5. screening plate; 6. ejection mechanism; 7. shaking mechanism; 8. motor; 9. lever; 10. connecting rod; 11. slide groove; 12. slider; 13. shaft rod; 14. screw rod; 15. first mounting groove; 16. ejector block; 17. first spring; 18. second mounting groove; 19. insert block; 20. slot; 21. second spring; 22. pull rope; 23. pull block. DETAILED DESCRIPTION

[0023] In order to make the technical solution of the utility model more clear and specific to those skilled in the art, the utility model is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the utility model are not limited thereto.

[0024] like Figure 1-Figure 4As shown, this embodiment provides a screening device for granular materials, including a screening box 1, a supporting outer frame 4 horizontally slidably arranged between the two ends of the top of the screening box 1, and a screening plate 5 installed at the bottom of the supporting outer frame 4, one end of the interior of the screening box 1 is provided with a shaking mechanism 7 for controlling the reciprocating sliding of the supporting outer frame 4, and the four corners of the bottom of the inner side of the supporting outer frame 4 are provided with an ejection mechanism 6 for vertically ejecting the screening plate 5.

[0025] General working principle: the supporting outer frame 4 has the same structure as that in the comparative document, and has a through hole with a convex cross-section. During use, the side of the screening plate 5 fits tightly with the inner side of the supporting outer frame 4, which can ensure that the screening plate 5 is in a horizontal limited state. The screening plate 5 is located at the inner bottom of the supporting outer frame 4, and the sliding of the screening plate 5 is reciprocatedly controlled by the shaking mechanism 7 to perform screening operations. When the screening plate 5 needs to be replaced, there is no need to push the screening plate 5 out from the bottom of the supporting outer frame 4. It is only necessary to release the limiting state of the ejection mechanism 6 at the four corners of the bottom of the supporting outer frame 4, so that the screening plate 5 can be pushed out horizontally to the top of the supporting outer frame 4 for taking.

[0026] In this embodiment, sliding rods 2 are horizontally fixed at both ends of the screening box 1 , sliding sleeves 3 are slidably provided at both ends of the sliding rod 2 , and the bearing outer frame 4 is fixed between four sets of sliding sleeves 3 .

[0027] Partial working principle: The position of the bearing outer frame 4 is limited by the sliding sleeve 3 on the sliding rod 2, and in the process of controlling the reciprocating sliding of the bearing outer frame 4, the sliding sleeve 3 slides on the sliding rod 2.

[0028] In this embodiment, the shaking mechanism 7 includes a motor 8, a lever 9, a connecting rod 10 and a position adjustment assembly. The motor 8 is installed at the inner end of the screening box 1, and the output end of the motor 8 is installed with the lever 9. The connecting rod 10 is rotatably installed on the outer side of the lever 9. The top end of the connecting rod 10 is hinged to the bottom of the supporting outer frame 4. The lever 9 is provided with a position adjustment assembly for controlling the movement of the end of the connecting rod 10 along the length direction of the lever 9.

[0029] Local working principle: During the screening process, the starting motor 8 drives the lever 9 to rotate. Since the lever 9 is rotationally connected to the connecting rod 10, the connecting rod 10 will be pulled and pushed, thereby controlling the reciprocating sliding of the supporting outer frame 4. In addition, the position of the end of the connecting rod 10 on the lever 9 is adjusted through the position adjustment component, so that the length of the left and right sliding of the supporting outer frame 4 can be regulated to control the amplitude of the shaking.

[0030] In this embodiment, the position adjustment component includes a slide groove 11, a slider 12, an axle rod 13 and a screw rod 14. A slide groove 11 is opened on the lever 9 along the length direction, and a slider 12 is slidably arranged inside the slide groove 11. A screw rod 14 is rotatably installed between the two ends of the slide groove 11, and one end of the screw rod 14 extends to the outer end of the lever 9. The screw rod 14 is threadedly connected with the slider 12. The axle rod 13 is vertically fixed to the outer side of the slider 12. A hole matching the axle rod 13 is opened at the end of the connecting rod 10, and the axle rod 13 passes through the inside of the hole.

[0031] Local working principle: rotating the screw rod 14 to control the slider 12 to move toward the top of the lever 9 can increase the total length of the connecting rod 10 and the lever 9, thereby increasing the swing amplitude of the supporting outer frame 4, and vice versa, reducing the swing amplitude of the supporting outer frame 4.

[0032] In this embodiment, the ejection mechanism 6 includes a first mounting groove 15, a ejection block 16, a first spring 17 and a locking assembly. The first mounting groove 15 is vertically opened at the four corners of the inner bottom of the supporting outer frame 4. The interior of the first mounting groove 15 is vertically slidably provided with an ejection block 16. A first spring 17 is provided between the bottom end of the ejection block 16 and the inner bottom of the first mounting groove 15. The sides of the first mounting groove 15 are provided with locking assemblies for positioning the ejection block 16. The top of the ejection block 16 and the bottom of the screening plate 5 are provided with magnet blocks that attract each other.

[0033] Local working principle: During the installation of the screening plate 5, align it with the groove on the supporting outer frame 4, then move vertically downward to compress the top block 16 into the inside of the first installation groove 15, and after the screening plate 5 is fitted with the inner bottom of the supporting outer frame 4, the top block 16 is limited by the locking assembly. At this time, the installation of the screening plate 5 is completed, and the position is further fixed by the magnetic attraction of the magnet block.

[0034] In this embodiment, the locking assembly includes a second mounting groove 18, an insert block 19, a slot 20 and a second spring 21. The second mounting groove 18 is opened at the top of the side of the first mounting groove 15. The inside of the second mounting groove 18 is slidably provided with an insert block 19. The top block 16 is provided with a slot 20 that cooperates with the insert block 19. The cross-sectional shape of the insert block 19 is a right-angled trapezoid. A second spring 21 is provided between the insert block 19 and the inner end of the second mounting groove 18, and a pulling assembly is provided at one end of the insert block 19 close to the second spring 21.

[0035] Local working principle: During the downward movement of the screening plate 5, the downward movement of the top block 16 will be controlled. When the slot 20 on the side of the top block 16 is aligned with the end of the plug block 19, the second spring 21 is reset to control the plug block 19 to move toward the inside of the slot 20, thereby locking the position of the top block 16. When the fixed state of the top block 16 is released, it is only necessary to use the pulling assembly to control the plug block 19 to move toward the inside of the second mounting groove 18, and the plug block 19 is pulled out from the inside of the slot 20.

[0036] In this embodiment, the pulling assembly includes a pull rope 22 and a pull block 23. The pull rope 22 is fixed to one end of the plug block 19 close to the second spring 21. The pull rope 22 passes through the center of the second spring 21 and penetrates into the interior of the load-bearing outer frame 4. Multiple groups of pull ropes 22 are interconnected and slidably arranged inside the load-bearing outer frame 4. The top of the pull rope 22 extends to the top of the load-bearing outer frame 4, and a pull block 23 is fixed to the top of the pull rope 22.

[0037] Local working principle: When the control block 19 slides toward the inside of the second installation groove 18, by pulling the pull block 23 upward, multiple groups of pull ropes 22 will be controlled to slide inside the load-bearing outer frame 4, and the plug block 19 will be pulled to compress the second spring 21 to release the locked state.

[0038] The above is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present invention according to the technical solution and concept of the present invention, which fall within the protection scope of the present invention.

Claims

1. A granular material screening device, comprising a screening box (1), a bearing outer frame (4) horizontally slidably arranged between the top ends of the screening box (1), and a screening plate (5) installed at the bottom of the bearing outer frame (4), characterized in that: One end of the interior of the screening box (1) is provided with a shaking mechanism (7) for controlling the reciprocating sliding of the supporting outer frame (4), and the four corners of the bottom of the inner side of the supporting outer frame (4) are provided with ejection mechanisms (6) for vertically ejecting the screening plate (5).

2. A granular material screening device according to claim 1, characterized in that: Slide rods (2) are horizontally fixed at both ends of the screening box (1), slide sleeves (3) are slidably arranged at both ends of the slide rod (2), and the bearing outer frame (4) is fixed between four sets of slide sleeves (3).

3. A granular material screening device according to claim 2, characterized in that: The shaking mechanism (7) comprises a motor (8), a lever (9), a connecting rod (10) and a position adjustment component. The motor (8) is mounted at the inner end of the screening box (1). The output end of the motor (8) is mounted with a lever (9). The outer side of the lever (9) is rotatably mounted with a connecting rod (10). The top end of the connecting rod (10) is hinged to the bottom of the supporting outer frame (4). The lever (9) is provided with a position adjustment component for controlling the end of the connecting rod (10) to move along the length direction of the lever (9).

4. A granular material screening device according to claim 3, characterized in that: The position adjustment component comprises a slide groove (11), a slider (12), an axle rod (13) and a screw rod (14); a slide groove (11) is provided on the lever (9) along the length direction; a slider (12) is slidably provided inside the slide groove (11); a screw rod (14) is rotatably installed between the two ends of the slide groove (11); one end of the screw rod (14) extends to the outer end of the lever (9); the screw rod (14) is threadedly connected to the slider (12); axle rod (13) is vertically fixed to the outer side of the slider (12); a hole matching with the axle rod (13) is provided at the end of the connecting rod (10), and the axle rod (13) passes through the inside of the hole.

5. A granular material screening device according to claim 4, characterized in that: The ejection mechanism (6) comprises a first mounting groove (15), an ejection block (16), a first spring (17) and a locking assembly. The first mounting groove (15) is vertically arranged at four corners of the inner bottom of the bearing outer frame (4). An ejection block (16) is vertically slidably arranged inside the first mounting groove (15). A first spring (17) is arranged between the bottom end of the ejection block (16) and the inner bottom of the first mounting groove (15). The side edges of the first mounting groove (15) are provided with locking assemblies for positioning the ejection block (16). The top of the ejection block (16) and the bottom of the screening plate (5) are provided with magnet blocks that attract each other.

6. A granular material screening device according to claim 5, characterized in that: The locking assembly comprises a second mounting groove (18), an insert block (19), a slot (20) and a second spring (21). The second mounting groove (18) is arranged at the top of the side of the first mounting groove (15). The second mounting groove (18) is slidably provided with an insert block (19). The top block (16) is provided with a slot (20) matched with the insert block (19). The cross-sectional shape of the insert block (19) is a right-angled trapezoid. A second spring (21) is arranged between the insert block (19) and the inner end of the second mounting groove (18). A pulling assembly is arranged at one end of the insert block (19) close to the second spring (21).

7. A granular material screening device according to claim 6, characterized in that: The pulling assembly includes a pull rope (22) and a pull block (23), and a pull rope (22) is fixed to one end of the plug block (19) close to the second spring (21). The pull rope (22) passes through the center of the second spring (21) and penetrates into the interior of the load-bearing outer frame (4). Multiple groups of pull ropes (22) are interconnected and slidably arranged inside the load-bearing outer frame (4). The top of the pull rope (22) extends to the top of the load-bearing outer frame (4), and a pull block (23) is fixed to the top of the pull rope (22).

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