Multi-layer vibrating screen structure convenient to clean

Abstract

The multi-layer vibrating screen structure convenient to clean comprises a screen box body, a vibrating mechanism, a rack and a buffering mechanism, a feeding port is formed in the upper end of a screen box, a discharging box body is arranged at the lower end of the screen box, a plurality of layers of screens are arranged in the screen box, and a plurality of auxiliary cleaning holes used for cleaning impurities on each layer of screen are formed in the screen box and the discharging box body. Through the structural design of the multiple auxiliary cleaning holes, impurities such as weeds, wood chips and stones on each layer of screen can be cleaned in time, concentrated accumulation of the impurities is avoided, and therefore the screen is prevented from being blocked, and the screening efficiency and the screening quality of the screen are guaranteed; impact and abrasion of the impurities to the screen can be reduced by cleaning the impurities in time, the service life of the screen is prolonged, and the use cost and the maintenance cost of the screen are saved.

Description

Technical Field

[0001] The invention relates to the field of grain processing, and in particular to a multi-layer vibrating screen structure which is easy to clean. Background Art

[0002] Before grain enters the granary for storage, it is usually necessary to use a screening machine to remove impurities, such as inorganic impurities such as gravel, sand, metal substances, and organic impurities such as grass leaves, wood chips, plant roots, stems and leaves, and plastic products, so as not to affect the use and storage value of the grain.

[0003] The vibrating screen is a supporting equipment for the grain storage production line. The woven structure of the vibrating screen is a pre-bent corrugated metal wire. During the use of the existing vibrating screen, impurities are very likely to gradually accumulate on the screen, thereby blocking the mesh of the screen, affecting the screening efficiency and quality. At the same time, the impurities will continuously wear the screen during the up and down vibration process. The screen is troublesome to disassemble and the cost of replacement is relatively high. In view of the above situation, it is urgent to provide a multi-layer screen structure that is easy to clean impurities to overcome the shortcomings in current practical applications. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a multi-layer vibrating screen structure which is easy to clean.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: The present invention discloses a multi-layer vibrating screen structure which is easy to clean, comprising a screen box body, a vibrating mechanism, a frame and a buffer mechanism, wherein the vibrating mechanism is fixed on both sides of the screen box body, and the screen box body is installed on the frame through the buffer mechanism, the screen box body comprises a screen box, a feed port is provided at the upper end of the screen box, and a discharge box body is provided at the lower end of the screen box; the screen box comprises two side walls, a top cover and a bottom plate, a plurality of inclinedly distributed card grooves are fixedly connected to the inner side surfaces of the side walls, and a first screen, a second screen and a third screen are fixedly connected to the card grooves in sequence from top to bottom; a plurality of first auxiliary cleaning holes are provided on the top cover; a plurality of second auxiliary cleaning holes are provided on the side walls; a plurality of third auxiliary cleaning holes and a fourth auxiliary cleaning holes are provided on the upper part of the discharge box body.

[0006] As a preferred technical solution of the present invention, the vibration mechanism includes two symmetrically arranged vibration motors, a connecting shaft is provided between the two vibration motors for fixed connection, and the vibration motor base is fixed to the side of the screen box by bolts.

[0007] As a preferred technical solution of the present invention, the buffer mechanism includes a plurality of annular buffer pads installed on the frame, a spring is provided inside the buffer pad, and a fixed bracket rotatably connected to the side wall of the screen box is provided above the buffer pad.

[0008] As a preferred technical solution of the present invention, the first auxiliary cleaning hole is rectangular, the first auxiliary cleaning hole is connected to the first screen, and is used to clean debris on the first screen. One side of the first auxiliary cleaning hole is rotatably connected to the first cover plate through a hinge.

[0009] As a preferred technical solution of the present invention, a toggle clamp is fixedly connected to the side wall corresponding to each position of the second auxiliary cleaning hole by bolts, and a second cover plate is rotatably connected to one side of the second auxiliary cleaning hole by a hinge, the toggle clamp is used to press the second cover plate, the second auxiliary cleaning hole is connected to the second screen, and the second auxiliary cleaning hole is used to clean debris on the second screen.

[0010] As a preferred technical solution of the present invention, a plurality of third auxiliary cleaning holes are provided, and the third auxiliary cleaning holes are located at the top of the discharge box and directly opposite to the end of the first screen. One side of the third auxiliary cleaning hole is rotatably connected to a third cover plate through a hinge, and the third auxiliary cleaning hole is connected to the first screen for cleaning debris on the first screen.

[0011] As a preferred technical solution of the present invention, a plurality of fourth auxiliary cleaning holes are provided, and the fourth auxiliary cleaning holes are located in the middle of the discharge box and directly opposite to the end of the second screen. One side of the fourth auxiliary cleaning hole is rotatably connected to a fourth cover plate through a hinge, and the fourth auxiliary cleaning hole and the second screen are used to clean debris on the second screen.

[0012] As a preferred technical solution of the present invention, main impurity removal channels for discharging impurities are also provided on both sides of the discharge box, the main impurity removal channels are connected to the sides of the first screen and the second screen, and the main impurity removal channels are welded to the discharge box.

[0013] As a preferred technical solution of the present invention, two auxiliary impurity removal channels for discharging impurities are symmetrically arranged on the bottom surface of the discharge box body, the auxiliary impurity removal channels are welded to the bottom of the discharge box body, and the auxiliary impurity removal channels are connected to the bottom layer of the screen box.

[0014] As a preferred technical solution of the present invention, a discharge port is provided at the bottom of the discharge box, the discharge port is communicated with the bottom of the discharge box, and the discharge port is welded to the side of the discharge box.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the structural design of multiple auxiliary cleaning holes, impurities such as plastic products, weeds and wood chips on each layer of the screen can be cleaned in time to avoid impurities accumulation, thereby preventing the screen from being blocked and ensuring the screening efficiency and quality of the screen; 2. By cleaning impurities in time, the impact and wear of impurities on the screen can be reduced, the service life of the screen can be extended, and the use cost and maintenance cost of the screen can be saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a front view of the present invention; Figure 3 is a top view of the present invention; Figure 4 It is a cross-sectional structural schematic diagram of the present invention; Figure 5 is a side view of the present invention; In the figure: 1. screen box body; 2. vibration mechanism; 3. frame; 4. buffer mechanism; 5. screen box; 6. feed port; 7. discharge box; 8. side wall; 9. top cover; 10. bottom plate; 11. slot; 12. first screen; 13. second screen; 14. third screen; 15. first auxiliary cleaning hole; 16. second auxiliary cleaning hole; 17. third auxiliary cleaning hole; 18. fourth auxiliary cleaning hole; 19. buffer pad; 20. first cover plate; 21. elbow clamp; 22. second cover plate; 23. third cover plate; 24. fourth cover plate; 25. main impurity removal channel; 26. auxiliary impurity removal channel; 27. discharge port. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0018] In the drawings, the same reference numerals all refer to the same components.

[0019] like Figure 1-5As shown, the present invention provides a multi-layer vibrating screen structure that is easy to clean, including a screen box body 1, a vibrating mechanism 2, a frame 3 and a buffer mechanism 4, the vibrating mechanism 2 is fixed on both sides of the screen box body 1, the screen box body 1 is installed on the frame 3 through the buffer mechanism 4, the screen box body 1 includes a screen box 5, the upper end of the screen box 5 is provided with a feed port 6, and the lower end of the screen box 5 is provided with a discharge box body 7; the screen box 5 includes two side walls 8, a top cover 9 and a bottom plate 10, the inner side of the side wall 8 is fixedly connected with a plurality of inclined parallel distributed card grooves 11, and the card grooves 11 are fixedly connected with a first screen 12, a second screen 13 and a third screen 14 in sequence from top to bottom through buckles; a plurality of first auxiliary cleaning holes 15 are provided on the top cover 9; a plurality of second auxiliary cleaning holes 16 are provided on the side wall 8; a plurality of third auxiliary cleaning holes 17 and a fourth auxiliary cleaning holes 18 are provided on the upper part of the discharge box body 7. The present invention screens the grains through the multi-layer screens in the screen box 5, and then the impurities on the screens can be cleaned in time through the auxiliary cleaning holes, thereby preventing the screens from being blocked.

[0020] The use of the present invention is as follows: 1. The grains containing impurities to be screened are transported to the top of the feed port 6 through a conveyor belt (not shown). The grains fall onto the first screen 12 under the action of gravity and vibrate along with the first screen 12; 2. After being screened by the first screen 12, the screened impurities gradually fall to the end of the first screen 12. After a certain period of time, the first cover plate 20 and the third cover plate 23 are manually opened to clean the impurities on the first screen 12 from the first auxiliary cleaning hole 15 and the third auxiliary cleaning hole 17. At the same time, the screened grains fall onto the second screen 13 and vibrate with the second screen 13. 3. After being screened by the second screen 13, the screened impurities gradually fall to the end of the second screen 13. After a certain period of accumulation, the fourth cover plate 24 and the second cover plate 22 can be opened manually to clean the impurities on the second screen 13 from the fourth auxiliary cleaning hole 18 and the second auxiliary cleaning hole 16; at the same time, the screened grain falls on the third screen 14 and vibrates with the second screen 14; during the vibration process, the impurities on the first screen 12 and the second screen 13 are automatically discharged mainly from the main impurity discharge channel 25; 4. After being screened by the third screen 14 , the screened impurities (mainly small sand particles, etc.) gradually fall onto the screen box 5 at the bottom of the third screen 14 , and then are automatically discharged from the secondary impurity discharge channel 26 .

[0021] Furthermore, the vibration mechanism 2 includes two symmetrically arranged vibration motors, a connecting shaft is provided between the two vibration motors for fixed connection, the base of the vibration motor is fixed to the side of the screen box 5 by bolts, and the vibration motor is used to drive the screen box 5 to vibrate periodically up and down as a whole, thereby driving the grain and impurities to be gradually separated on the screen.

[0022] Furthermore, the buffer mechanism 4 includes a plurality of annular buffer pads 19 mounted on the frame 1. Preferably, a spring for buffering and supporting the screen box 5 is coaxially arranged in each buffer pad 19. A fixed bracket rotatably connected to the side wall of the screen box 5 is provided above the buffer pad 19. The spring is movably connected to the fixed bracket to support the up and down vibration of the fixed bracket.

[0023] Furthermore, the first auxiliary cleaning hole 15 is rectangular, the first auxiliary cleaning hole 15 is connected to the first screen 12, and one side of the first auxiliary cleaning hole 15 is rotatably connected to the first cover plate 20 through a hinge. After a period of screening, the first cover plate 20 can be manually opened to clean the debris accumulated on the first screen 12.

[0024] Furthermore, a toggle clamp 21 is fixedly connected to each position of the second auxiliary cleaning hole 16 on the side wall 8 by bolts, and a second cover plate 22 is rotatably connected to one side of the second auxiliary cleaning hole 14 by a hinge, and the second auxiliary cleaning hole 14 is connected to the second screen 13. After a period of screening, the second cover plate 22 can be opened manually to conveniently clean the debris accumulated near the middle of the second screen 13, and after the cleaning is completed, the second cover plate 22 can be pressed and closed by the toggle clamp 21.

[0025] Further, a plurality of third auxiliary cleaning holes 17 are provided, and the third auxiliary cleaning holes 17 are located at the top of the discharge box 7 and are directly opposite to the end of the first screen 12. Preferably, the first screen 12 is provided with three holes, namely, left, middle and right, which respectively correspond to the left, middle and right sides of the first screen 12. One side of the third auxiliary cleaning hole 17 is rotatably connected to a third cover plate 23 through a hinge, and the third auxiliary cleaning hole 17 is connected to the first screen 12. After a period of screening, the third cover plate 23 can be opened manually, so as to conveniently clean the debris accumulated on the first screen 12.

[0026] Furthermore, a plurality of fourth auxiliary cleaning holes 18 are provided, and the fourth auxiliary cleaning holes 18 are located in the middle of the discharge box 7 and directly opposite to the end of the second screen 13. One side of the fourth auxiliary cleaning hole 18 is rotatably connected to a fourth cover plate 24 through a hinge. The fourth auxiliary cleaning hole 18 and the second screen 13 can be manually opened after screening for a period of time, so as to clean up debris accumulated on the second screen 13.

[0027] Furthermore, main impurity removal channels 25 for discharging impurities are provided on both sides of the discharge box 7. The main impurity removal channels 25 are connected to the sides of the first screen 12 and the second screen 13 near the bottom. When the screen box 5 vibrates up and down, the main impurities in the first screen 12 and the second screen 13 are automatically discharged from the main impurity removal channels 25. The outer side of the main impurity removal channels 25 is welded to the side of the discharge box 7.

[0028] Furthermore, two auxiliary impurity removal channels 26 for discharging impurities are symmetrically provided on the bottom surface of the discharge box 7. The two auxiliary impurity removal channels 26 are welded to the bottom of the discharge box 7. The auxiliary impurity removal channels 26 are connected to the bottom layer of the discharge box 7. During the vibration process, the sieved small particles, such as sand and gravel, are automatically discharged through the third screen 14.

[0029] Furthermore, a discharge port 27 is provided at the bottom of the discharge box 7. Preferably, the discharge port 27 is funnel-shaped, connected to the bottom of the screen box 5, and welded to the side of the discharge box 7. The screened grain is output from the discharge port 27 to an external granary or conveyor belt three.

[0030] The present invention is a multi-layer vibrating screen structure that is easy to clean. While automatically discharging impurities through the main impurity discharge channel 25 and the auxiliary impurity discharge channel 26, a plurality of auxiliary cleaning holes are provided to timely clean impurities blocked on the screen, thereby ensuring the continuity and efficiency of screening.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-layer vibrating screen structure that is easy to clean, comprising a screen box body (1), a vibrating mechanism (2), a frame (3) and a buffer mechanism (4), wherein the vibrating mechanism (2) is fixed to both sides of the screen box body (1), and the screen box body (1) is mounted on the frame (3) via the buffer mechanism (4), characterized in that: The screen box body (1) comprises a screen box (5), the upper end of the screen box (5) is provided with a feed port (6), and the lower end of the screen box (5) is provided with a discharge box body (7); the screen box (5) comprises two side walls (8), a top cover (9) and a bottom plate (10); the inner side of the side wall (8) is fixedly connected with a plurality of inclinedly distributed slots (11), and the slots (11) are fixedly connected with a first screen (12), a second screen (13) and a third screen (14) in sequence from top to bottom; the top cover (9) is provided with a plurality of first auxiliary cleaning holes (15); the side wall (8) is provided with a plurality of second auxiliary cleaning holes (16); and the upper part of the discharge box body (7) is provided with a plurality of third auxiliary cleaning holes (17) and a fourth auxiliary cleaning hole (18).

2. A multi-layer vibrating screen structure that is easy to clean according to claim 1, characterized in that: The vibration mechanism (2) comprises two symmetrically arranged vibration motors, a connecting shaft is provided between the two vibration motors for fixed connection, and the vibration motor base is fixed to the side of the screen box (5) by bolts.

3. The multi-layer vibrating screen structure that is easy to clean according to claim 1, characterized in that: The buffer mechanism (4) comprises a plurality of annular buffer pads (19) mounted on the frame (1), a spring being arranged inside the buffer pads (19), and a fixed bracket being rotatably connected to a side wall of the screen box (5) being arranged above the buffer pads (19).

4. The multi-layer vibrating screen structure that is easy to clean according to claim 1, characterized in that: The first auxiliary cleaning hole (15) is rectangular and communicates with the first screen (12) for cleaning debris on the first screen (12). One side of the first auxiliary cleaning hole (15) is rotatably connected to a first cover plate (20) via a hinge.

5. The multi-layer vibrating screen structure that is easy to clean according to claim 1, characterized in that: A toggle clamp (21) is fixedly connected to the side wall (8) at a position corresponding to each of the second auxiliary cleaning holes (16) by means of bolts; a second cover plate (22) is rotatably connected to one side of the second auxiliary cleaning hole (14) by means of a hinge; the toggle clamp (21) is used to press the second cover plate (22); the second auxiliary cleaning hole (14) is communicated with the second screen (13); and the second auxiliary cleaning hole (14) is used to clean debris on the second screen (13).

6. The multi-layer vibrating screen structure that is easy to clean according to claim 1, characterized in that: A plurality of the third auxiliary cleaning holes (17) are provided. The third auxiliary cleaning holes (17) are located at the top of the discharge box (7) and directly opposite to the end of the first screen (12). One side of the third auxiliary cleaning hole (17) is rotatably connected to a third cover plate (23) via a hinge. The third auxiliary cleaning hole (17) is connected to the first screen (12) and is used to clean debris on the first screen (12).

7. The multi-layer vibrating screen structure that is easy to clean according to claim 1, characterized in that: A plurality of the fourth auxiliary cleaning holes (18) are provided. The fourth auxiliary cleaning holes (18) are located in the middle of the discharge box (7) and directly opposite to the end of the second screen (13). A fourth cover plate (24) is rotatably connected to one side of the fourth auxiliary cleaning hole (18) via a hinge. The fourth auxiliary cleaning hole (18) and the second screen (13) are used to clean debris on the second screen (13).

8. The multi-layer vibrating screen structure that is easy to clean according to claim 1, characterized in that: Main impurity removal channels (25) for removing impurities are also provided on both sides of the discharge box (7); the main impurity removal channels (25) are connected to the sides of the first screen (12) and the second screen (13); and the main impurity removal channels (25) are welded to the discharge box (7).

9. The multi-layer vibrating screen structure that is easy to clean according to claim 1, characterized in that: Two auxiliary impurity removal channels (26) for removing impurities are symmetrically arranged on the bottom surface of the discharge box (7); the auxiliary impurity removal channels (26) are welded to the bottom of the discharge box (7); and the auxiliary impurity removal channels (26) are in communication with the bottom layer of the screen box (5).

10. The multi-layer vibrating screen structure that is easy to clean according to claim 1, characterized in that: The bottom of the discharge box (7) is provided with a discharge port (27), the discharge port (27) is communicated with the bottom of the discharge box (7), and the discharge port (27) is welded to the side of the discharge box (7).

Images