A screening device

Abstract

The application provides a screening device, and belongs to the technical field of screening equipment, and the device comprises a support structure, a screening assembly and a reciprocating moving assembly; the support structure comprises two parallel and spaced first tracks and second tracks, and a mounting seat is arranged on one side between the first track and the second track; the reciprocating moving assembly is arranged on the mounting seat; the screening assembly comprises a screen connected to the output end of the reciprocating moving assembly; the bottom surface of the screen is provided with two rollers at both ends, respectively; the two rollers are in rolling connection with the corresponding first track and second track, so that the screen is arranged in an inclined manner; the lower end of the screen in the inclined direction is provided with a baffle rotatingly arranged; the top surface of the baffle is rotatingly connected to the two sides of the lower end of the screen in the inclined direction; a limiting plate is rotatingly arranged outside the lower end of the screen in the inclined direction, and is used for closing or opening the butt joint between the bottom surface of the baffle and the screen; and an output belt is arranged at the butt joint between the screen and the bottom surface of the baffle. The scheme provided by the application can reduce the frequency of clogging the screen during the screening process of materials, and improve the screening effect.

Description

Technical Field

[0001] This utility model belongs to the field of screening equipment technology, and in particular relates to a screening device. Background Technology

[0002] Raw materials for barley pasta, pea vermicelli, and rice noodles all require sieving during the dehumidification stage of processing to remove impurities and ensure product quality. Currently, to improve sieving efficiency, sieving equipment is often used. However, after a period of use, screen clogging can easily occur, requiring screen maintenance and disrupting continuous operation. For example, prior art discloses an application with application number CN202422261958.8 entitled "An Agricultural Grain Sieving Device," which includes a sieving machine casing, a removal shell fixedly connected to its upper surface, a fan fixedly attached to the right side of the removal shell, a feed hopper fixedly attached to the upper surface of the removal shell, a feed inlet on the sieving machine casing connected to the removal shell, a sieving screen frame fixed inside the sieving machine casing, and a vibrating motor at its bottom. The vibrating motor strikes the sieving screen frame to sieving the grains, thereby achieving the purpose of removing impurities. While this method can remove impurities, the grains move up and down on the screening frame under the action of the vibrating motor to achieve screening. The direction of movement is consistent with the axis of the screen holes, which can easily lead to clogging of the screen holes, affecting the screening effect, and also causing a lot of noise. Utility Model Content

[0003] To address the shortcomings of the existing technology, this utility model provides a screening device that reduces the frequency of screen clogging during material screening and improves screening efficiency.

[0004] In order to achieve the purpose of this utility model, the following solution is proposed: A screening device, located below the output end of a feeding device, includes: The support structure includes two parallel and spaced-apart first and second tracks, with the installation height of the first track being greater than that of the second track. A mounting base is provided on one side between the first and second tracks, and a reciprocating moving component is provided on the mounting base. The screening assembly includes a screen connected to the output end of a reciprocating moving component. Rollers are provided at both ends of the bottom surface of the screen, and the rollers are respectively rotatably connected to the corresponding first and second tracks to make the screen tilted. A baffle is provided at the lower end of the screen in the tilting direction. The two ends of the top surface of the baffle are respectively rotatably connected to the two sides of the lower end of the screen in the tilting direction. A limiting plate is provided on the outer side of the lower end of the screen in the tilting direction for closing or opening the connection between the bottom surface of the baffle and the screen. An output belt is provided at the connection between the screen and the bottom surface of the baffle.

[0005] Furthermore, both the first and second tracks have upward-protruding rib structures along their length. A set of supports is provided at both ends of the bottom of the screen. The supports are in the form of an inverted U-shaped structure with the opening facing downward. The two side arms of the supports are respectively located on both sides of the rib structure in the middle of the corresponding first and second tracks. Rollers are respectively located at the lower end of each support arm.

[0006] Furthermore, the mounting base is provided with an L-shaped mounting plate. The horizontal part of the mounting plate is parallel to the mounting base, and rectangular plates are provided on both sides of the vertical part of the mounting plate. The rectangular plates have through grooves on both sides, and one end of the reciprocating moving component is slidably connected to the groove.

[0007] Furthermore, the reciprocating moving assembly includes a motor located at one end of the horizontal part of the mounting plate. Its output end passes vertically upward through the mounting plate and is provided with a cam. One end of the cam is provided with a moving rod. One end of the moving rod abuts against the cam, and the other end passes through the vertical part of the mounting plate and connects to the screen. Both sides of the moving rod are provided with protrusions. The protrusions are slidably connected to the strip groove. A spring is provided on the outer sleeve of the moving rod. One end of the spring abuts against the vertical part of the mounting plate, and the other end abuts against the protrusion.

[0008] Furthermore, one end of the moving rod is provided with a U-shaped block with its opening facing the cam, and a roller is vertically rotatable at the opening of the U-shaped block, the roller abutting against the cam.

[0009] Furthermore, the lower end of the screen is provided with support ears on both sides, the limiting plate is a right-angle plate structure, the limiting plate has a connecting block on one right-angle side parallel to the second track, and a connecting pin is provided on one side of the connecting block perpendicularly, the connecting pin is rotatably connected to the support ear.

[0010] The beneficial effects of this utility model are as follows: The screening device of this invention uses a moving rod driven by a cam to move the screen back and forth, thereby causing the material to move back and forth on the screen along a direction perpendicular to the screen hole axis. This causes the material to continuously rub against the screen during the screening process, thereby reducing the frequency of screen clogging and improving the screening effect. In addition, the baffle extends the material residence time, allowing the material to be fully screened. Attached Figure Description

[0011] The accompanying drawings described herein are merely illustrative of selected embodiments, not all possible implementations, and are not intended to limit the scope of this invention.

[0012] Figure 1 A three-dimensional structural schematic diagram of one side of this application is shown.

[0013] Figure 2 This application shows Figure 1 A magnified view of part A in the diagram.

[0014] Figure 3A three-dimensional structural schematic diagram of the other side of this application is shown.

[0015] Figure 4 This application shows Figure 3 A magnified view of part B in the diagram.

[0016] The markings in the diagram are: Support structure-10, First track-11, Second track-12, Mounting seat-13, Mounting plate-131, Rectangular plate-132, Strip groove-133, Reciprocating moving assembly-14, Motor-141, Cam-142, Moving rod-143, Protrusion-144, Spring-145, U-block-146, Roller-147, Screening assembly-20, Screen mesh-21, Roller-211, Support-212, Baffle-22, Limiting plate-23, Connecting block-231, Connecting pin-232, Support lug-213, Output belt-24. Detailed Implementation

[0017] To make the objectives, technical solutions and advantages of the present utility model clearer, the implementation methods of the present utility model will be described in detail below with reference to the accompanying drawings. However, the embodiments described in the present utility model are only some embodiments of the present utility model, and not all embodiments.

[0018] like Figures 1-4 As shown, this embodiment provides a screening device, including a support structure 10 and a screening component 20. The screening component 20 is reciprocated along the length of the support structure 10 and is located below the output end of the feeding device.

[0019] like Figure 1 , Figures 3-4 As shown, the support structure 10 includes a first track 11, a second track 12, a mounting base 13, and a reciprocating moving component 14. The length directions of the first track 11 and the second track 12 are parallel to each other and spaced apart. Support columns are respectively provided below the first track 11 and the second track 12. The height of the support column corresponding to the first track 11 is greater than the height of the support column below the second track 12, so that the height of the position of the first track 11 is greater than the height of the position of the second track 12. The two ends of the screening component 20 are slidably connected to the first track 11 and the second track 12 respectively.

[0020] Mounting base 13 is located on the symmetrical center line of the length direction of the first track 11 and the second track 12, and is situated on one side of the screening assembly 20. Mounting base 13 has an L-shaped mounting plate 131. The horizontal portion of mounting plate 131 extends out of mounting base 13 at the end furthest from the screening assembly 20, and the vertical portion of mounting plate 131 is aligned with the side of mounting base 13 facing the screening assembly 20 and extends vertically upwards. Rectangular plates 132 are respectively provided on both sides of the horizontal portion of mounting plate 131. The length of the rectangular plates 132 is consistent with the length direction of the horizontal portion of mounting plate 131. Strip grooves 133 are formed through both sides of the rectangular plates 132, and the length direction of the strip grooves 133 is parallel to the length direction of the rectangular plates 132.

[0021] like Figure 4 As shown, the reciprocating moving assembly 14 includes a motor 141, a cam 142, a moving rod 143, a protrusion 144, a spring 145, a U-shaped block 146, and a roller 147. The motor 141 is mounted on the bottom surface of one end of the horizontal part of the mounting plate 131 that extends out of the mounting base 13, and the output end of the motor 141 is set upward. The cam 142 is located on the top surface of the end of the mounting plate 131 that extends out of the mounting base 13, and the output end of the motor 141 passes through the mounting plate 131 and is connected to the cam 142.

[0022] The moving rod 143 is arranged along the length of the horizontal part of the mounting plate 131. The protrusions 144 are respectively located on both sides of the middle part of the moving rod 143. The protrusions 144 are slidably connected to the corresponding strip grooves 133. One end of the moving rod 143 facing the horizontal part of the mounting plate 131 passes through the horizontal part of the mounting plate 131 and connects to the screening assembly 20.

[0023] Spring 145 passes through moving rod 143, and both ends of spring 145 abut against protrusion 144 and horizontal part of mounting plate 131 respectively.

[0024] U-shaped block 146 is located at one end of moving rod 143 facing cam 142, and the opening of U-shaped block 146 faces cam 142. Roller 147 is rotatably provided at the opening of U-shaped block 146, and the axis of roller 147 is vertically arranged.

[0025] like Figure 1 , Figure 2 As shown, the screening assembly 20 includes a screen 21, a baffle 22, a limiting plate 23, and an output belt 24. Side guard plates are provided on both sides of the screen 21. A set of spaced supports 212 are provided at both ends of the bottom of the screen 21. The supports 212 have an inverted U-shaped structure with the opening facing the direction. The top surface of the first track 11 and the second track 12 has a convex strip structure with the same length direction as the first track 11 and the second track 12. The opening width of the support 212 is the same as the cross-sectional width of the convex strip structure, so that the support 212 is vertically downward along the convex strip structure, so that the two side arms of the support 212 are located on both sides of the convex strip structure.

[0026] Rollers 211 are respectively provided at the lower end of the support arm of the support 212, and the rollers 211 respectively roll in contact with the corresponding first track 11 and second track 12.

[0027] This design allows the screen 21 to be tilted along the direction of the first track 11 toward the second track 12, and improves the stability of the screen 21 as it moves along the first track 11 and the second track 12.

[0028] Pins are provided at both ends of the top surface of the baffle 22. The pins are rotatably connected to the side guard plates on both sides of the screen 21. The bottom surface of the baffle 22 is in contact with the top surface of the lower end of the screen 21 in the inclined direction.

[0029] A lug 213 is provided on the outer wall at the lower end of the side guard plate in the inclined direction. The lug 213 corresponds to the connection between the pin and the side guard plate. The limiting plate 23 has a right-angle plate structure and is used to close the contact point between the baffle 22 and the top surface of the screen 21. In this state, the limiting plate 23 closes the contact point between the baffle 22 and the top surface of the screen 21. One right-angle side of the limiting plate 23 is parallel to the side surface of the baffle 23, and the other right-angle plate is parallel to the top surface of the baffle 23. A connecting block 231 is provided on the side of the limiting plate 23 that is parallel to the side surface of the baffle 23. The connecting block 231 extends in a direction parallel to the lug 213. A connecting pin 232 is provided perpendicular to the connecting block 231. One end of the connecting pin 232 is rotatably connected to the lug 213.

[0030] When the screen 21 is screening, the limiting plate 23 closes the connection between the baffle 22 and the screen 21, so that the screened material is blocked by the baffle 22, so that the material is fully screened.

[0031] The lower end of the screen 21 in the inclined direction is provided with an output belt 24. There are side panels on both sides of the output belt 24. The height of the side panels is greater than the height of the baffle 22 to prevent the material from jumping out of the output belt 24. The projection of the baffle 22 and the top surface of the screen 21 on the horizontal plane falls into the output belt 24 to catch the material.

[0032] Specific usage process: Close the limit plate 23 to present as follows Figure 2 In the state shown, the motor 141 is started, which drives the cam 142 to rotate, thereby causing the moving rod 143 to move the screen 21 back and forth, so that the material rolls down along the inclined direction of the screen 21. During the rolling process, the material that falls onto the screen 21 laterally rubs the screen 21 from side to side to reduce the clogging of the screen 21.

[0033] When the material falls to the lower end of the screen 21, it is blocked by the baffle 22. Small particles of material continuously sink downwards at the junction of the baffle 22 and the top of the screen 21 as the screen 21 moves back and forth, so that large particles of material continuously rise upwards. When the material reaches a certain height, it falls from the top of the baffle 22 onto the output belt 24, so that the output belt 24 outputs it.

[0034] After screening, the limiting plate 23 is flipped outwards to the side guard plate of the screen 21, thereby opening the contact point between the baffle 22 and the top surface of the screen 21, so that the material that was last blocked on the top surface of the screen 21 falls onto the output belt 24 for output.

[0035] The above description is merely a preferred embodiment of this utility model and does not imply its uniqueness or limitation. Those skilled in the art should understand that various changes or equivalent substitutions made to this utility model without departing from its scope are all within the protection scope of this utility model.

Claims

1. A screening device, disposed below the output end of a feeding device, characterized in that, include: The support structure (10) includes two parallel and spaced first rails (11) and second rails (12), and the installation height of the first rail (11) is greater than the installation height of the second rail (12). A mounting seat (13) is provided on one side between the first rail (11) and the second rail (12), and a reciprocating moving component (14) is provided on the mounting seat (13). The screening assembly (20) includes a screen (21) connected to the output end of the reciprocating moving assembly (14). Rollers (211) are provided at both ends of the bottom surface of the screen (21). The rollers (211) are respectively connected to the corresponding first track (11) and second track (12) to make the screen (21) tilted. A baffle (22) is provided at the lower end of the tilt direction of the screen (21). The two ends of the top surface of the baffle (22) are respectively rotatably connected to the two sides of the lower end of the tilt direction of the screen (21). A limiting plate (23) is provided on the outer side of the lower end of the tilt direction of the screen (21) to close or open the bottom surface of the baffle (22) and the screen (21). An output belt (24) is provided at the bottom surface of the screen (21) and the bottom surface of the baffle (22).

2. The screening device according to claim 1, characterized in that, Both the first track (11) and the second track (12) have upward protruding rib structures along their length. The bottom ends of the screen (21) are provided with a set of supports (212). The supports (212) are in the shape of an inverted U-shape with the opening facing downward. The two side arms of the supports (212) are respectively located on both sides of the rib structure in the middle of the corresponding first track (11) and second track (12). The rollers (211) are respectively rotatably located at the lower ends of the supports (212).

3. The screening device according to claim 1, characterized in that, Mounting base (13) is provided with L-shaped mounting plate (131). The horizontal part of the mounting plate (131) is parallel to the mounting base (13). Rectangular plates (132) are provided on both sides of the vertical part of the mounting plate (131). A strip groove (133) runs through both sides of the rectangular plate (132). One end of the reciprocating moving component (14) is slidably connected to the strip groove (133).

4. The screening device according to claim 3, characterized in that, The reciprocating moving assembly (14) includes a motor (141) located at one end of the horizontal part of the mounting plate (131). Its output end passes vertically upward through the mounting plate (131) and is provided with a cam (142). One end of the cam (142) is provided with a moving rod (143). One end of the moving rod (143) abuts against the cam, and the other end passes through the vertical part of the mounting plate (131) and connects to the screen (21). Both sides of the moving rod (143) are provided with protrusions (144). The protrusions (144) are slidably connected to the strip groove (133). The moving rod (143) is covered with a spring (145). One end of the spring (145) abuts against the vertical part of the mounting plate (131), and the other end abuts against the protrusion (144).

5. The screening device according to claim 4, characterized in that, One end of the moving rod (143) is provided with a U-shaped block (146) with its opening facing the cam (142). A roller (147) is vertically rotatable at the opening of the U-shaped block (146), and the roller (147) abuts against the cam (142).

6. The screening device according to claim 1, characterized in that, The screen (21) has two support ears (213) on both sides of its lower end. The limiting plate (23) has a right-angle plate structure. The limiting plate (23) has a connecting block (231) on one right-angle side parallel to the second track (12). The connecting pin (232) is vertically provided on one side of the connecting block (231). The connecting pin (232) is rotatably connected to the support ear (213).

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