High-frequency screen excitation system for screening fine materials and wet materials

Abstract

The invention relates to the technical field of high-frequency screen material screening, in particular to a high-frequency screen excitation system for screening fine materials and wet materials, which comprises fixed seats fixed on two sides of a screen box, a vibrating shaft is arranged in the screen box, mounting holes are formed in the fixed seats, and buffer rubber blocks are arranged in the mounting holes. The two ends of the vibration shaft penetrate through the corresponding buffer rubber blocks, the end of the vibration shaft is connected with an installation base, a vibration motor is fixed to the installation base, a plurality of vibration arms are fixed to the vibration shaft, a screen is fixed to the inner wall of the screen box, and beating strips for beating the screen are fixed to the vibration arms. A receding hole for receding when the vibration shaft swings up and down is formed in the side wall of the screen. The screening device has the technical effects that wet materials can be efficiently screened, the screen is prevented from being blocked, and the screening efficiency is improved.

Description

Technical Field

[0001] This invention relates to the technical field of high-frequency screening of materials, and in particular to a high-frequency screen vibration system for screening fine and wet materials. Background Technology

[0002] High-frequency screens (high-frequency vibrating screens) are high-efficiency equipment that uses high-frequency, low-amplitude vibration to achieve fine screening of materials and wet materials. They are mainly used in mining, coal, chemical, food and other industries.

[0003] Existing high-frequency screen vibration systems for screening fine and wet materials are mainly used for screening large materials, with limited screening range. The unbalanced vibration motor can only achieve a maximum of 3,000 impacts on the screen per minute, resulting in low screening efficiency for fine materials. When screening wet materials, the screen is easily clogged, reducing screening efficiency. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention provides a high-frequency screen vibration system for screening fine and wet materials, which effectively solves the problem of screen clogging.

[0005] This invention provides a high-frequency screen vibration system for screening fine and moist materials, employing the following technical solution: A high-frequency screen vibration system for screening fine and wet materials includes fixed seats on both sides of a screen box, a vibrating shaft inside the screen box, mounting holes on the fixed seats, buffer rubber blocks in the mounting holes, corresponding buffer rubber blocks passing through both ends of the vibrating shaft, mounting seats connected to the ends of the vibrating shaft, a vibrating motor fixed on the mounting seats, multiple vibrating arms fixed on the vibrating shaft, a screen mesh fixed on the inner wall of the screen box, striking strips fixed on the vibrating arms to strike the screen mesh, and clearance holes on the side wall of the screen mesh to allow the vibrating shaft to move up and down.

[0006] Optionally, the buffer rubber block is frustoconical in shape, with a smaller diameter on the side of the buffer rubber block away from the screen box, and the mounting hole is adapted to the buffer rubber block, with a larger diameter on the side of the buffer rubber block closer to the screen box than the diameter of the clearance hole.

[0007] Optionally, the vibration shaft includes an intermediate shaft and a connecting shaft. The connecting shaft includes an integrally formed first shaft segment, a second shaft segment, and a third shaft segment. The cross-sections of the first and third shaft segments are circular, and the cross-section of the second shaft segment is square. The right-angle positions of the square are transitioned by rounded corners. The first shaft segment is fixed to the intermediate shaft, and the third shaft segment is fixed to the mounting base.

[0008] Optionally, the mounting base has a clamping hole, and the end of the third shaft segment away from the second shaft segment is inserted into the clamping hole. A clamping groove is provided on one side of the third shaft segment on the mounting base. A locking bolt is provided on the mounting base, and the locking bolt is threadedly connected to the mounting base. After tightening the locking bolt, the mounting base on both sides of the clamping groove clamps the third shaft segment.

[0009] Optionally, the fixing base includes a first base body and a second base body. A mounting plate is fixed to the side of the first base body near the screen box. The mounting plate is fixed to the screen box by bolts. The first base body and the second base body are fixed by bolts. The mounting hole is located in the middle of the first base body and the second base body.

[0010] Compared with the prior art, the present invention has the following technical effects: It can efficiently screen damp materials; the external motor makes maintenance convenient and saves labor; the motor uses a frequency converter for stepless speed regulation, and different speeds can be used for different materials and different screens to achieve higher screening efficiency; high-frequency tapping of the screen prevents clogging and improves screening efficiency. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the intermediate shaft, vibrating arm, and striking bar in this invention; Figure 3 This is a schematic diagram illustrating the first shaft segment, the second shaft segment, the third shaft segment, and the buffer rubber block in this invention; Figure 4 This is a schematic diagram illustrating the mounting base and vibration motor in this invention.

[0012] Explanation of reference numerals in the attached drawings: 1. Fixed base; 11. First base body; 12. Second base body; 13. Mounting plate; 14. Mounting hole; 2. Buffer rubber block; 3. Vibrating shaft; 31. Intermediate shaft; 32. Connecting shaft; 321. First shaft section; 322. Second shaft section; 323. Third shaft section; 4. Vibrating motor; 41. Mounting base; 411. Clamping hole; 412. Clamping groove; 5. Vibrating arm; 6. Striking bar; 7. Screen box; 8. Screen mesh. Detailed Implementation

[0013] The following is in conjunction with the appendix Figure 1 - Appendix Figure 4 The present invention will be described in further detail below.

[0014] Reference Figures 1-4This invention discloses a high-frequency screen vibration system for screening fine and moist materials. It includes two fixing seats 1 fixed to the side wall of a screen box 7, located on opposite sides of the screen box 7. Each fixing seat 1 includes a first seat body 11 and a second seat body 12. A mounting plate 13 is fixed to the side of the first seat body 11 closest to the screen box 7, and the mounting plate 13 is bolted to the screen box 7. The first seat body 11 is located below the second seat body 12, and the first seat body 11 and the second seat body 12 are fixed together by bolts. A mounting hole 14 is provided at the center of the first seat body 11 and the second seat body 12, and the diameter of the mounting hole 14 gradually decreases from the side closest to the side wall of the screen box 7 to the side furthest from the side wall of the screen box 7.

[0015] A buffer rubber block 2 is provided in the mounting hole 14. The buffer rubber block 2 is frustoconical in shape, and the side of the buffer rubber block 2 away from the screen box 7 protrudes from the first seat 11 and the second seat 12. A vibration shaft 3 is provided inside the screen box 7. The vibration shaft 3 includes an intermediate shaft 31 and a connecting shaft 32. The connecting shaft 32 is welded to both ends of the intermediate shaft 31.

[0016] The connecting shaft 32 includes an integrally formed first shaft segment 321, a second shaft segment 322, and a third shaft segment 323. The first shaft segment 321 and the third shaft segment 323 have circular cross-sections, while the second shaft segment 322 has a square cross-section with rounded corners at the right angles. A buffer rubber block 2 has a shaft hole that mates with the second shaft segment 322. The first shaft segment 321 is welded and fixed to the intermediate shaft 31. A mounting base 41 is provided at the end of the third shaft segment 323 away from the second shaft segment 322. A vibration motor 4 is connected to the mounting base 41, and the vibration motor 4 is fixed to the mounting base 41 with bolts. The axis of the vibration motor 4's rotating shaft is perpendicular to the axis of the vibration shaft 3.

[0017] The mounting base 41 has a clamping hole 411. The end of the third shaft segment 323 away from the second shaft segment 322 is inserted into the clamping hole 411. A clamping groove 412 is provided on one side of the third shaft segment 323 on the mounting base 41. A locking bolt is provided on the mounting base 41 and is threadedly connected to the mounting base 41. After tightening the locking bolt, the mounting base 41 on both sides of the clamping groove 412 clamps the third shaft segment 323, thereby fixing the third shaft segment 323 to the mounting base 41. A clearance hole is provided on the side wall of the screen box 7 for the first shaft segment 321 to pass through. The diameter of the clearance hole is larger than the diameter of the first shaft segment 321, allowing space for the first shaft segment 321 to swing up and down. The side of the buffer rubber block 2 closest to the screen box 7 is released from the screen box 7. The diameter of the side of the buffer rubber block 2 closest to the screen box 7 is larger than the diameter of the clearance hole.

[0018] The screen 8 is fixed to the inner wall of the screen box 7. Multiple vibrating arms 5 are fixed on the intermediate shaft 31, and the multiple vibrating arms 5 are evenly distributed along the length direction of the intermediate shaft 31. A striking bar 6 is fixed to the end of the vibrating arm 5 away from the intermediate shaft 31. The length direction of the striking bar 6 is set along the length direction of the intermediate shaft 31.

[0019] When screening large materials, vibrating motors 4 can be installed on both sides of the vibrating shaft 3. The output shafts of the two vibrating motors 4 rotate in opposite directions, and their torsional forces are superimposed to provide a greater excitation force, making it easier for the striking bar 6 to strike the screen 8.

[0020] The implementation principle of the high-frequency screen vibration system for screening fine and wet materials according to the present invention is as follows: When fine materials pass through the vibration system, the vibrating motor 4, moving at 0-6000 revolutions per minute, drives the mounting base 41 to swing up and down. The mounting base 41 drives the connecting shaft 32 to swing up and down, thereby driving the intermediate shaft 31, vibrating arm 5, and striking bar 6 to swing up and down, thus causing the striking bar 6 to strike the screen 8. The striking bar 6 can achieve 0-6000 strikes per minute at a depth of 1-3 mm on the screen 8, where 1-3 mm is the height the screen 8 is lifted when the striking bar 6 strikes it. The high frequency allows the screen 8 to be struck continuously even when it is not reset, achieving high-efficiency screening and hole cleaning. The vibration system of the present invention not only improves the screening efficiency of fine materials but also prevents the screen 8 from clogging by striking it at high frequency. When screening large materials, vibrating motors 4 are installed on both sides, and the two vibrating motors 4 rotate in opposite directions. The superposition of their torsional forces provides a greater excitation force.

[0021] The beneficial effects of this invention are: 1. It can efficiently screen damp materials; 2. The motor is external, which makes maintenance convenient and saves labor; 3. The motor uses a frequency converter for stepless speed regulation, and different speeds can be used for different materials and different screens 8, so as to achieve higher screening efficiency; 4. High-frequency tapping of the screen 8 prevents clogging and improves screening efficiency.

[0022] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A high-frequency screen vibration system for screening fine and wet materials, characterized in that: The screen box (7) includes fixed seats (1) on both sides of the screen box (7), a vibrating shaft (3) is provided inside the screen box (7), a mounting hole (14) is provided on the fixed seat (1), a buffer rubber block (2) is provided in the mounting hole (14), both ends of the vibrating shaft (3) pass through the corresponding buffer rubber block (2), the end of the vibrating shaft (3) is connected to the mounting seat (41), a vibrating motor (4) is fixed on the mounting seat (41), multiple vibrating arms (5) are fixed on the vibrating shaft (3), a screen (8) is fixed on the inner wall of the screen box (7), a striking strip (6) is fixed on the vibrating arm (5) to strike the screen (8), and a clearance hole is provided on the side wall of the screen (8) to allow the vibrating shaft (3) to move up and down.

2. The high-frequency screen vibration system for screening fine and wet materials according to claim 1, characterized in that: The buffer rubber block (2) is truncated cone-shaped. The side of the buffer rubber block (2) away from the screen box (7) has a smaller diameter. The mounting hole (14) is adapted to the buffer rubber block (2). The diameter of the side of the buffer rubber block (2) close to the screen box (7) is larger than the diameter of the clearance hole.

3. The high-frequency screen vibration system for screening fine and wet materials according to claim 1 or 2, characterized in that: The vibration shaft (3) includes an intermediate shaft (31) and a connecting shaft (32). The connecting shaft (32) includes an integrally formed first shaft segment (321), a second shaft segment (322), and a third shaft segment (323). The cross-sections of the first shaft segment (321) and the third shaft segment (323) are circular, and the cross-section of the second shaft segment (322) is square. The right angle of the square is transitioned by rounded corners. The first shaft segment (321) is fixed to the intermediate shaft (31), and the third shaft segment (323) is fixed to the mounting base (41).

4. The high-frequency screen vibration system for screening fine and wet materials according to claim 3, characterized in that: The mounting base (41) has a clamping hole (411). The end of the third shaft section (323) away from the second shaft section (322) is inserted into the clamping hole (411). The mounting base (41) has a clamping groove (412) on one side of the third shaft section (323). The mounting base (41) is provided with a locking bolt. The locking bolt is threaded to the mounting base (41). After tightening the locking bolt, the mounting base (41) on both sides of the clamping groove (412) clamps the third shaft section (323).

5. The high-frequency screen vibration system for screening fine and wet materials according to claim 1, characterized in that: The fixed base (1) includes a first base body (11) and a second base body (12). The first base body (11) is fixed with a mounting plate (13) on the side near the screen box (7). The mounting plate (13) is fixed to the screen box (7) by bolts. The first base body (11) and the second base body (12) are fixed by bolts. The mounting hole (14) is located in the middle position of the first base body (11) and the second base body (12).

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