Ore screening device for mine

Abstract

The ore screening device for the mine comprises a screening box and a screen fixed to the inner wall of the screening box, and an anti-blocking mechanism is arranged in the screening box; the anti-blocking mechanism comprises a plurality of rotating shafts, the rotating shafts are arranged above the screen mesh through transmission parts, a plurality of rotating rods are fixedly connected to the surfaces of the rotating shafts, connecting grooves are formed in the inner wall of one side of the screening box, connecting blocks are slidably connected to the inner walls of the connecting grooves, and the connecting blocks are arranged in the screening box through rotating parts; according to the ore screening device for the mine, ore can be impacted through the anti-blocking rods which are distributed in a staggered mode, meanwhile, the screen can be impacted along with rotation of the rotating rod matched with the rotating shaft, so that the ore falls down through meshes with small hole diameters in the screen, and therefore the ore can be prevented from being clamped in the meshes, and the follow-up ore screening efficiency is guaranteed; and the high-speed and high-efficiency screening process is realized.

Description

Technical Field

[0001] The invention relates to the technical field of ore screening, in particular to an ore screening device for mines. Background Art

[0002] Ore screening machine is an auxiliary equipment for screening coarse and fine ores. With the continuous development of the mining machinery industry, different types of mine ore screening machines have appeared on the market. The ore screening device generally includes a sieve plate, which is inclined and has through holes for ore particles to pass through.

[0003] At present, a Chinese patent with announcement number CN216323314U discloses an ore screening device for mines, which belongs to the field of ore machinery technology, including a square base plate, a straight slide rail is fixedly installed on the top of the square base plate, a material receiving box is slidably connected to the upper part of the straight slide rail, a cylindrical handle is fixedly installed on the front side of the material receiving box, a convex block is fixedly installed on the right side of the material receiving box and close to the top, a support column is fixedly installed on the top of the square base plate and close to the left and right sides, a screen plate is fixedly installed on the top of the support column, a screen is fixedly installed on the bottom side of the screen plate, a through hole is opened on the top of the screen, and a square groove is opened on the right side of the screen plate, which can achieve that the material receiving box is not easily misaligned with the through hole during the material receiving process, thereby preventing ore particles from falling directly on the ground, thereby improving the ore screening effect.

[0004] However, when the above device is in use, it relies on the ore to roll on the screen for screening operation. When the ore rolls on the screen for screening operation, since the ore usually has irregular shapes and sharp edges, it is easy to get stuck in the mesh of the screen, which will not only cause the mesh of the screen to become smaller, thereby affecting the subsequent screening efficiency of the ore, but also the ore stuck in the mesh of the screen will form an obstacle, hindering the normal passage of subsequent ore, which will not only affect the accuracy of the screening, but also may cause the entire screening process to become slow and inefficient.

[0005] To this end, the present invention provides an ore screening device for mines. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides an ore screening device for use in mines to solve the above problems.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an ore screening device for mines, comprising a screening box and a screen fixed to the inner wall of the screening box, wherein an anti-blocking mechanism is provided in the screening box; The anti-blocking mechanism includes a plurality of rotating shafts, which are arranged above the screen through transmission parts, and a plurality of rotating rods are fixedly connected to the surface of the rotating shafts. A connecting groove is opened on the inner wall of one side of the screening box, and a connecting block is slidably connected to the inner wall of the connecting groove. The connecting block is arranged in the screening box through a rotating part, and two anti-blocking rods with staggered distribution are arranged on the top of the connecting block through an adjusting part, and the two anti-blocking rods are respectively in contact with the top and bottom of the screen.

[0008] Preferably, the anti-blocking rod is in a triangular prism structure, the screen is arranged at an angle, the mesh aperture of the screen increases from the higher end to the lower end, and the screen can be used to screen rolling ores of different sizes.

[0009] Preferably, the rotating member includes a rotating disk rotatably connected to the screening box via a bearing, the edge of the rotating disk is rotatably connected to a rotating rod via a bearing, and the connecting block can be moved in the inner wall of the connecting groove by rotation of the rotating rod. A rotating plate is provided in the screening box, a rotating groove is provided on one side of the rotating plate, and the inner wall of the rotating groove forms a sliding fit with the rotating rod.

[0010] Preferably, the outer wall of the screening box is fixedly connected to a rotating motor via a support rod, the output shaft of the rotating motor is fixedly connected to a rotating shaft, and the rotating shaft is fixedly mounted to the outer wall of the rotating disk.

[0011] Preferably, the adjusting member includes an anti-blocking block fixed to the anti-blocking rod, the anti-blocking block is in a U-shaped structure, and anti-blocking grooves are provided on the inner walls on both sides of the screening box. The inner walls of the anti-blocking grooves form a sliding fit with the anti-blocking blocks, and the movement of the anti-blocking block enables the anti-blocking rod to impact the stuck ore.

[0012] Preferably, an adjusting cylinder is fixedly connected to the top of the connecting block, an adjusting rod is slidably connected to the inner wall of the adjusting cylinder, the adjusting rod is hinged to the anti-blocking block, and the anti-blocking rod can be moved on the surface of the screen by sliding the adjusting rod in the inner wall of the adjusting cylinder.

[0013] Preferably, the transmission member includes a tooth plate fixed to the top of the anti-blocking block, a tooth groove is provided on the top inner wall of the anti-blocking groove, the tooth plate and the tooth groove form a sliding fit, the inner wall of the tooth groove is rotatably connected to the rotating shaft through a bearing, a gear is fixedly connected to the surface of the rotating shaft, the gear is meshed with the tooth plate, and the rotating rod can impact the screen by moving the tooth plate and coordinating the rotation of the gear.

[0014] Preferably, the rotating rod has an L-shaped structure, a movable groove is provided at the bottom of the rotating rod, a movable spring is fixedly installed on the top inner wall of the movable groove, a movable rod is fixedly installed on the bottom of the movable spring, the bottom of the movable rod has an arc-shaped structure, and the movable rod is in contact with the screen.

[0015] Preferably, a negative pressure port is opened on one side outer wall of the screening box, a processing box connected to the negative pressure port is fixedly installed on one side outer wall of the screening box, a filter screen plate is fixedly connected to the inner wall of the processing box, and a negative pressure shaft extending into the negative pressure port is rotatably connected to one side outer wall of the processing box through a bearing, a plurality of blades are fixedly installed on the surface of the negative pressure shaft, and the negative pressure shaft is connected to the output shaft of the rotating motor through a belt and a pulley.

[0016] Preferably, a cleaning plate is fixedly installed on the bottom of the negative pressure shaft, a cleaning port is opened on the bottom outer wall of the processing box, the cleaning plate and the cleaning port are both located between the negative pressure port and the filter screen plate, and a cleaning door is hinged on the bottom outer wall of the processing box, and the cleaning door is fixed to the processing box by a lock. Beneficial Effects

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The ore screening device for mining uses a connecting block to perform a reciprocating movement operation in a connecting groove, so that the displaced anti-blocking rods can impact the ore. At the same time, as the rotating rod cooperates with the rotation of the rotating shaft, the screen can be impacted, so that the ore falls through the mesh holes with smaller apertures on the screen. Therefore, the ore can be prevented from getting stuck in the mesh holes, ensuring the subsequent ore screening efficiency and achieving a high-speed and efficient screening process.

[0018] 2. The ore screening device for mining can rotate when the negative pressure shaft rotates through the cleaning plate set. The rotation of the cleaning plate can clean the surface of the filter plate, and the dust can be accumulated on the bottom inner wall of the processing box. After using it for a period of time, the staff can open the lock and rotate the cleaning door to take out the dust and treat it uniformly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of a partial cross-sectional structure of the rotating rod of the present invention; Figure 3 yes Figure 2 A schematic diagram of the enlarged structure at A in the middle; Figure 4 It is a structural schematic diagram of the anti-blocking rod of the present invention; Figure 5 It is a schematic diagram of a partial cross-sectional structure of the regulating tube of the present invention; Figure 6 It is a partial cross-sectional structural schematic diagram of the tooth plate of the present invention; Figure 7 It is a structural schematic diagram of the rotating rod of the present invention; Figure 8 It is a partial cross-sectional structural schematic diagram of the movable rod of the present invention; Fig. 9 It is a schematic diagram of the partial cross-sectional structure of the scraper of the present invention.

[0020] In the figure: 1. screening box; 2. screen; 3. rotating shaft; 4. rotating rod; 5. connecting groove; 6. connecting block; 7. anti-blocking groove; 8. anti-blocking block; 9. anti-blocking rod; 10. rotating disk; 11. rotating rod; 12. rotating plate; 13. rotating groove; 14. rotating motor; 15. rotating shaft; 16. adjusting cylinder; 17. adjusting rod; 18. tooth plate; 19. tooth groove; 20. gear; 21. movable groove; 22. movable spring; 23. movable rod; 24. processing box; 25. filter screen plate; 26. negative pressure port; 27. negative pressure shaft; 28. blade; 29. ​​cleaning plate; 30. cleaning door. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-9 As shown, an ore screening device for a mine comprises a screening box 1 and a screen 2 fixed to the inner wall of the screening box 1, wherein an anti-blocking mechanism is arranged in the screening box 1; The anti-blocking mechanism includes a plurality of rotating shafts 3, which are arranged above the screen 2 through a transmission member. A plurality of rotating rods 4 are fixedly connected to the surface of the rotating shaft 3. A connecting groove 5 is provided on the inner wall of one side of the screening box 1. A connecting block 6 is slidably connected to the inner wall of the connecting groove 5. The connecting block 6 is arranged in the screening box 1 through a rotating member. Two anti-blocking rods 9 with staggered distribution are arranged on the top of the connecting block 6 through an adjusting member. The two anti-blocking rods 9 are respectively in contact with the top and bottom of the screen 2.

[0023] Specifically, by setting the connecting block 6 to perform a reciprocating movement operation in the connecting groove 5, the anti-blocking rod 9 can always be in close contact with the surface of the screen 2 for moving operation. When ore is stuck in the mesh of the screen 2, the staggered anti-blocking rod 9 can impact the ore to force the ore out of the mesh of the screen 2. At the same time, as the rotating rod 4 cooperates with the rotation of the rotating shaft 3, the screen 2 can be impacted to make the ore fall through the mesh with smaller aperture on the screen 2. Therefore, the ore can be prevented from getting stuck in the mesh, thereby ensuring the subsequent ore screening efficiency and achieving a high-speed and efficient screening process.

[0024] As a further improvement of the present invention, the anti-blocking rod 9 is a triangular prism structure, the screen 2 is inclined, the mesh aperture of the screen 2 increases from the higher end to the lower end, and the screen 2 can be used to screen rolling ores of different sizes.

[0025] Specifically, the anti-blocking rod 9 with a triangular prism structure can facilitate the passage of ore through the surface of the anti-blocking rod 9 for subsequent screening operations. The side cross-section of the anti-blocking rod 9 is smaller, which can facilitate the crushing operation of the anti-blocking rod 9 on the ore to reduce the volume of the stuck ore.

[0026] As a further improvement of the present invention, the rotating member includes a rotating disk 10 rotatably connected to the screening box 1 through a bearing, and the edge of the rotating disk 10 is rotatably connected to a rotating rod 11 through a bearing. The rotation of the rotating rod 11 enables the connecting block 6 to move in the inner wall of the connecting groove 5. A rotating plate 12 is provided in the screening box 1, and a rotating groove 13 is opened on one side of the rotating plate 12. The inner wall of the rotating groove 13 forms a sliding fit with the rotating rod 11.

[0027] Specifically, the rotating disk 10 is arranged so that the rotating rod 11 can be rotated when it is rotated. The rotation of the rotating rod 11 can apply force to the inner wall of the rotating groove 13, and cooperate with the sliding of the connecting block 6 in the inner wall of the connecting groove 5, so that the connecting block 6 can perform a reciprocating movement operation in the connecting groove 5, and the anti-blocking rod 9 can impact the ore, so as to force the ore out of the mesh of the screen 2.

[0028] Preferably, the outer wall of the screening box 1 is fixedly connected to a rotating motor 14 via a supporting rod, the output shaft of the rotating motor 14 is fixedly connected to a rotating shaft 15 , and the rotating shaft 15 is fixedly mounted to the outer wall of the rotating disk 10 .

[0029] Specifically, the rotating shaft 15 is configured to rotate when the output shaft of the rotating motor 14 rotates, so that the rotating disk 10 can rotate to facilitate the reciprocating movement of the anti-blocking rod 9, thereby preventing the mesh of the screen 2 from being blocked.

[0030] As a further improvement of the present invention, the adjusting member includes an anti-blocking block 8 fixed to the anti-blocking rod 9, the anti-blocking block 8 has a U-shaped structure, and anti-blocking grooves 7 are provided on the inner walls on both sides of the screening box 1. The inner walls of the anti-blocking grooves 7 form a sliding fit with the anti-blocking block 8. The movement of the anti-blocking block 8 can enable the anti-blocking rod 9 to impact the stuck ore.

[0031] Specifically, the anti-blocking block 8 is able to slide in the inner wall of the anti-blocking groove 7, so that the anti-blocking rod 9 can impact the ore, and the ore can be forced out of the mesh of the screen 2, thereby avoiding the ore from being stuck in the mesh, ensuring the subsequent ore screening efficiency, and achieving high-speed and efficient screening process.

[0032] As a further improvement of the present invention, an adjusting cylinder 16 is fixedly connected to the top of the connecting block 6, and an adjusting rod 17 is slidably connected to the inner wall of the adjusting cylinder 16. The adjusting rod 17 is hinged to the anti-blocking block 8, and the anti-blocking rod 9 can be moved on the surface of the screen 2 by sliding the adjusting rod 17 in the inner wall of the adjusting cylinder 16.

[0033] Specifically, the setting adjustment rod 17 can slide in the inner wall of the adjustment cylinder 16, which can facilitate the anti-blocking rod 9 to always fit the surface of the screen 2 for movement operation, and ensure that the anti-blocking block 8 can move back and forth at high speed in the inner wall of the anti-blocking groove 7.

[0034] As a further improvement of the present invention, the transmission part includes a tooth plate 18 fixed to the top of the anti-blocking block 8, and a tooth groove 19 is opened on the top inner wall of the anti-blocking groove 7. The tooth plate 18 and the tooth groove 19 form a sliding fit. The inner wall of the tooth groove 19 is rotatably connected to the rotating shaft 3 through a bearing. A gear 20 is fixedly connected to the surface of the rotating shaft 3, and the gear 20 is meshed with the tooth plate 18. The movement of the tooth plate 18 and the rotation of the gear 20 can enable the rotating rod 4 to impact the screen 2.

[0035] Specifically, by setting the tooth plate 18, when the anti-blocking block 8 slides in the inner wall of the anti-blocking groove 7, the tooth plate 18 can slide in the inner wall of the tooth groove 19. The movement of the tooth plate 18 can apply force to the gear 20, and the rotating shaft 3 can make the rotating rod 4 rotate, which helps the movable rod 23 to collide with the surface of the screen 2.

[0036] As a further improvement of the present invention, the rotating rod 4 has an L-shaped structure, a movable groove 21 is provided at the bottom of the rotating rod 4, a movable spring 22 is fixedly installed on the top inner wall of the movable groove 21, a movable rod 23 is fixedly installed on the bottom of the movable spring 22, the bottom of the movable rod 23 has an arc-shaped structure, and the movable rod 23 is in contact with the screen 2.

[0037] Specifically, the rotating rod 4 is arranged to be able to rotate when the rotating shaft 3 rotates. At this time, the movable rod 23 performs an impact operation with the surface of the screen 2. When the movable rod 23 first contacts the screen 2, the vibration generated by the impact of the movable rod 23 on the screen 2 can help separate the ore from the mesh, and can enhance the pushing effect of the anti-blocking rod 9. After the movable rod 23 contacts the screen 2, the movable rod 23 can slide in the inner wall of the movable groove 21 and squeeze the movable spring 22 to reset, and can prepare for the next impact operation.

[0038] As a further improvement of the present invention, a negative pressure port 26 is opened on the outer wall of one side of the screening box 1, and a processing box 24 connected to the negative pressure port 26 is fixedly installed on the outer wall of one side of the screening box 1. A filter screen plate 25 is fixedly connected to the inner wall of the processing box 24. A negative pressure shaft 27 extending into the negative pressure port 26 is rotatably connected to the outer wall of one side of the processing box 24 through a bearing, and a plurality of blades 28 are fixedly installed on the surface of the negative pressure shaft 27. The negative pressure shaft 27 is connected to the output shaft of the rotating motor 14 through a belt and a pulley.

[0039] Specifically, the negative pressure shaft 27 is set to rotate when the output shaft of the rotating motor 14 rotates. The rotation of the negative pressure shaft 27 can cause the blades 28 to rotate. The rotation of the blades 28 can cause a negative pressure state under the screen 2, which can produce suction on the dust generated when the screen 2 is ore, and the dust can be transported to the processing box 24 and filtered through the filter plate 25.

[0040] As a further improvement of the present invention, a cleaning plate 29 is fixedly installed at the bottom of the negative pressure shaft 27, and a cleaning port is opened on the bottom outer wall of the processing box 24. The cleaning plate 29 and the cleaning port are both located between the negative pressure port 26 and the filter screen plate 25. A cleaning door 30 is hinged on the bottom outer wall of the processing box 24, and the cleaning door 30 is fixed to the processing box 24 by a lock.

[0041] Specifically, the cleaning plate 29 can be rotated when the negative pressure shaft 27 rotates. The rotation of the cleaning plate 29 can clean the surface of the filter plate 25, and the dust can be accumulated on the bottom inner wall of the processing box 24. After using it for a period of time, the staff opens the lock and rotates the cleaning door 30 to take out the dust and treat it uniformly.

[0042] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0043] Working principle of the present invention: when in use, the ore can roll from top to bottom on the inclined screen 2, and the meshes with different apertures can screen ores of different sizes. Starting the rotating motor 14 can make the rotating shaft 15 rotate, and the rotation of the rotating shaft 15 can make the rotating disk 10 rotate. The rotation of the rotating disk 10 can make the rotating rod 11 rotate, and the rotation of the rotating rod 11 can apply force to the inner wall of the rotating groove 13, and cooperate with the inner wall of the connecting groove 5 to limit the connecting block 6, so that the connecting block 6 can perform a reciprocating movement operation in the connecting groove 5, and the movement of the connecting block 6 can make the adjusting cylinder 16 move, and cooperate with the adjusting rod 17 in the adjusting cylinder The sliding in the inner part of 16 can facilitate the anti-blocking rod 9 to always fit the surface of the screen 2 for moving operation. At this time, the anti-blocking block 8 can reciprocate at high speed in the inner wall of the anti-blocking groove 7. When ore is stuck in the mesh of the screen 2, the anti-blocking rod 9 with staggered distribution can impact the ore to force the ore out of the mesh of the screen 2. Moreover, when the reciprocating anti-blocking rod 9 is in an opposite position to the rolling ore, the ore with a smaller size can be intercepted, so that the ore falls through the mesh with a smaller aperture on the screen 2. Therefore, the ore can be prevented from being stuck in the mesh, thereby ensuring the subsequent ore screening efficiency and achieving a high-speed and efficient screening process. As the anti-blocking rod 9 moves back and forth, the anti-blocking block 8 slides in the inner wall of the anti-blocking groove 7, and at this time, the tooth plate 18 can slide in the inner wall of the tooth groove 19. The movement of the tooth plate 18 can apply force to the gear 20, and the rotating shaft 3 can be used to rotate the rotating rod 4. The rotation of the rotating rod 4 can cause the movable rod 23 to collide with the surface of the screen 2. When the movable rod 23 first contacts the screen 2, the vibration generated by the impact of the movable rod 23 on the screen 2 can help separate the ore from the mesh, and can improve the pushing effect of the anti-blocking rod 9. After the movable rod 23 contacts the screen 2, the movable rod 23 can slide in the inner wall of the movable groove 21 and squeeze the movable spring 22 to avoid deformation of the screen 2. After the movable rod 23 is separated from the screen 2, the elastic force of the movable spring 22 can separate the movable rod 23 from the inner wall of the movable groove 21, and prepare for the next impact operation. When performing anti-blocking operations, as the output shaft of the rotating motor 14 rotates, the negative pressure shaft 27 can be rotated, and the rotation of the negative pressure shaft 27 can cause the blades 28 to rotate. The rotation of the blades 28 can cause a negative pressure state to appear under the screen 2, which can produce suction on the dust generated when the screen 2 is ore, and the dust can be transported to the processing box 24 and filtered through the filter plate 25. As the negative pressure shaft 27 rotates, the cleaning plate 29 can be rotated, and the rotation of the cleaning plate 29 can clean the surface of the filter plate 25, and the dust can be accumulated on the bottom inner wall of the processing box 24. After using it for a period of time, the staff can open the lock and rotate the cleaning door 30 to take out the dust and treat it uniformly.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mine ore screening device, comprising a screening box (1) and a screen (2) fixed to the inner wall of the screening box (1), characterized in that: The screening box (1) is provided with an anti-blocking mechanism; The anti-blocking mechanism comprises a plurality of rotating shafts (3), the rotating shafts (3) being arranged above the screen (2) via a transmission member, a plurality of rotating rods (4) being fixedly connected to the surface of the rotating shafts (3), a connecting groove (5) being provided on the inner wall of one side of the screening box (1), a connecting block (6) being slidably connected to the inner wall of the connecting groove (5), the connecting block (6) being arranged in the screening box (1) via a rotating member, and two anti-blocking rods (9) being staggered and distributed are arranged on the top of the connecting block (6) via an adjusting member, and the two anti-blocking rods (9) are respectively in contact with the top and the bottom of the screen (2).

2. The ore screening device for mines according to claim 1, characterized in that: The anti-blocking rod (9) has a triangular prism structure, the screen (2) is arranged at an angle, the mesh aperture of the screen (2) increases from the higher end to the lower end, and the screen (2) can be used to screen rolling ores of different sizes.

3. The ore screening device for mines according to claim 1, characterized in that: The rotating member comprises a rotating disk (10) rotatably connected to the screening box (1) via a bearing, the edge of the rotating disk (10) is rotatably connected to a rotating rod (11) via a bearing, and the rotation of the rotating rod (11) enables the connecting block (6) to move in the inner wall of the connecting groove (5), and a rotating plate (12) is arranged in the screening box (1), and a rotating groove (13) is formed on one side of the rotating plate (12), and the inner wall of the rotating groove (13) forms a sliding fit with the rotating rod (11).

4. The ore screening device for mines according to claim 3, characterized in that: The outer wall of the screening box (1) is fixedly connected to a rotating motor (14) via a support rod, the output shaft of the rotating motor (14) is fixedly connected to a rotating shaft (15), and the rotating shaft (15) is fixedly mounted to the outer wall of the rotating disk (10).

5. The ore screening device for mines according to claim 1, characterized in that: The adjusting member comprises an anti-blocking block (8) fixed to an anti-blocking rod (9), the anti-blocking block (8) being of a U-shaped structure, and anti-blocking grooves (7) are provided on inner walls on both sides of the screening box (1), the inner walls of the anti-blocking grooves (7) and the anti-blocking blocks (8) forming a sliding fit, and the movement of the anti-blocking block (8) enables the anti-blocking rod (9) to impact the stuck ore.

6. The ore screening device for mines according to claim 5, characterized in that: The top of the connecting block (6) is fixedly connected to an adjusting cylinder (16), the inner wall of the adjusting cylinder (16) is slidably connected to an adjusting rod (17), the adjusting rod (17) is hinged to the anti-blocking block (8), and the anti-blocking rod (9) can be moved on the surface of the screen (2) by sliding the adjusting rod (17) in the inner wall of the adjusting cylinder (16).

7. The ore screening device for mines according to claim 6, characterized in that: The transmission member comprises a tooth plate (18) fixed to the top of the anti-blocking block (8); a tooth groove (19) is provided on the inner wall of the top of the anti-blocking groove (7); the tooth plate (18) and the tooth groove (19) form a sliding fit; the inner wall of the tooth groove (19) is rotatably connected to the rotating shaft (3) via a bearing; a gear (20) is fixedly connected to the surface of the rotating shaft (3); the gear (20) meshes with the tooth plate (18); and the rotating rod (4) can perform an impact operation on the screen (2) by moving the tooth plate (18) in conjunction with the rotation of the gear (20).

8. The ore screening device for mines according to claim 7, characterized in that: The rotating rod (4) is of an L-shaped structure. A movable groove (21) is provided at the bottom of the rotating rod (4). A movable spring (22) is fixedly mounted on the top inner wall of the movable groove (21). A movable rod (23) is fixedly mounted on the bottom of the movable spring (22). The bottom of the movable rod (23) is of an arc-shaped structure. The movable rod (23) is in contact with the screen (2).

9. The ore screening device for mines according to claim 1, characterized in that: A negative pressure port (26) is provided on one side outer wall of the screening box (1); a processing box (24) connected to the negative pressure port (26) is fixedly mounted on one side outer wall of the screening box (1); a filter screen plate (25) is fixedly connected to the inner wall of the processing box (24); a negative pressure shaft (27) extending into the negative pressure port (26) is rotatably connected to the outer wall of one side of the processing box (24) via a bearing; a plurality of blades (28) are fixedly mounted on the surface of the negative pressure shaft (27); and the negative pressure shaft (27) is connected to the output shaft of the rotating motor (14) via a belt and a pulley.

10. The ore screening device for mines according to claim 9, characterized in that: A cleaning plate (29) is fixedly mounted on the bottom of the negative pressure shaft (27); a cleaning port is provided on the bottom outer wall of the processing box (24); the cleaning plate (29) and the cleaning port are both located between the negative pressure port (26) and the filter screen plate (25); a cleaning door (30) is hingedly connected to the bottom outer wall of the processing box (24); the cleaning door (30) is fixed to the processing box (24) by a lock.

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