A mine filling excavation method and ore breaking apparatus

Abstract

The application discloses a mine filling tunneling method and an ore crushing device, which comprises an outer shell, a feeding port formed on the outer shell and a discharging port arranged on one side of the outer shell, a collecting box for loading crushed ores is arranged on one side of the discharging port, a dust suction pipe is arranged on the outer shell of the crushing device, a dust suction cover is arranged on one end of the dust suction pipe close to the collecting box, a negative pressure fan is arranged on the other end of the dust suction pipe, and a filter screen is arranged in the dust suction pipe. The application has the effects of reducing the possibility of inhaling dust for underground workers and reducing the health risk of underground construction personnel.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ore mining, in particular to a mine filling tunneling method and ore crushing equipment. BACKGROUND

[0002] The ore crusher is a device for crushing large ore in initial mining. The ore is crushed by the crushing device inside the device to a size that is convenient for transportation. It is a common device in the ore mining industry.

[0003] In the related art, the Chinese utility model patent with publication number CN217042784U discloses an ore crushing device, which includes a body, a feed hopper, a material collecting hopper and a guide plate. The bottom of the body is provided with a rack. The inside of the body is a cavity. The feed hopper is arranged at the top of the body. A crushing assembly for crushing ore is arranged in the cavity. The material collecting hopper is arranged in the cavity and located directly below the crushing assembly. The material collecting hopper is "V"-shaped and has an opening at the bottom. The bottom of the cavity is provided with a mounting rod. The guide plate is hingedly connected to the top of the mounting rod and located directly below the opening. The sidewall of the body is provided with a driving assembly for driving the guide plate to rotate. The sidewalls of the body are provided with two discharge openings. The two discharge openings are each provided with an inclined drainage plate. The high end of the drainage plate extends directly below the guide plate, and the low end of the drainage plate extends out of the body. The sidewall of the rack is provided with two collecting assemblies located directly below the two drainage plates. The driving assembly includes a first motor and a rotating rod. The first motor is arranged on the sidewall of the body. One end of the rotating rod is rotatably arranged on the inner wall of the cavity. The other end of the rotating rod is fixedly connected to the middle part of the guide plate. The first motor is used to drive the rotating rod to rotate. Each collecting assembly includes a support plate, a collecting box, a positioning block and a limiting mechanism. The support plate is horizontally arranged on the sidewall of the rack. The collecting box is placed on the top of the support plate. The positioning block is arranged on the top of the support plate near the rack. The limiting mechanism is arranged on the top of the support plate away from the rack. The collecting box is located between the positioning block and the limiting mechanism.

[0004] In the above related technology, when the ore is poured into the collecting box, the ore dust will be raised and scattered into the surrounding environment, thereby increasing the possibility of inhaling dust for the underground workers and increasing the health risk of the underground construction personnel. SUMMARY

[0005] In order to reduce the possibility of inhaling dust for the underground workers and reduce the health risk of the underground construction personnel, the present application provides a mine filling tunneling method and ore crushing equipment.

[0006] In the first aspect, the present application provides an ore crushing device for a mine, which adopts the following technical scheme:

[0007] The utility model provides a kind of mine ore crushing equipment, including outer shell, the inlet on the outer shell and the discharge port being arranged in the outer shell side, the discharge port side is provided with the collection box for loading the ore after being crushed, and the outer shell of crushing equipment is provided with dust suction pipe, the dust suction cover is installed in the dust suction pipe end close to the collection box, the other end of the dust suction pipe is provided with negative pressure fan, and the filter screen is installed in the dust suction pipe.

[0008] By adopting the above technical scheme, when the negative pressure fan is started, the dust suction cover can suck dust above the collection box, and through the filtration of the filter screen, the dust raised in the collection box when loading the ore can be collected on the filter screen, reducing the possibility of ore dust being raised and scattered to the surrounding environment when the ore is poured into the collection box, reducing the possibility of underground workers inhaling dust and reducing the health risk of underground construction personnel.

[0009] Preferably, the dust suction pipe is a steel pipe, and the side of the filter screen away from the negative pressure fan is provided with a brush discharge for cleaning the filter screen.

[0010] By adopting the above technical scheme, the brush discharge is arranged on the side of the filter screen away from the negative pressure fan, and the driving mechanism can drive the brush discharge to reciprocate, so that the brush discharge can clean the side of the filter screen where dust accumulates, increasing the possibility of filter screen blockage caused by dust accumulation on the filter screen and increasing the use efficiency of the filter screen.

[0011] Preferably, the driving mechanism includes a guide pipe fixedly connected to the dust suction pipe, a reciprocating screw rod is slidably arranged in the guide pipe, the reciprocating screw rod penetrates through the guide pipe and is fixedly connected to the brush discharge, a nut seat is rotatably arranged on the guide pipe, the nut seat cooperates with the reciprocating screw rod, a driven gear is sleeved on the nut seat, an electric motor is fixedly connected to the guide pipe, a driving gear is fixedly connected to the output shaft of the electric motor, and the driving gear is engaged with the driven gear.

[0012] By adopting the above technical scheme, since the driving gear is engaged with the driven gear, when the electric motor drives the driving gear to rotate, the driving gear can drive the nut seat to rotate through the driven gear, so that the reciprocating screw rod can drive the brush discharge to reciprocate, so that the brush discharge can clean the filter screen.

[0013] Preferably, the reciprocating screw is vertically arranged, the dust suction pipe is a square pipe, the middle section of the dust suction pipe passes through the outer shell, the bottom wall of the guide pipe is provided with a discharge port, the discharge port is located directly below the brush, the filter screen and the discharge port are located on the inner side of the outer shell, the inner wall of the discharge port is fixedly connected with a rotating shaft, the rotating shaft is rotatably provided with a blocking plate for blocking the discharge port, and a reset member is arranged between the blocking plate and the rotating shaft for keeping the blocking plate horizontal.

[0014] By adopting the above technical scheme, the discharge port is arranged on the bottom wall of the guide pipe, the rotating shaft is fixed on the inner wall of the discharge port, and the blocking plate is rotatably arranged on the rotating shaft. The dust cleaned by the brush can be discharged into the outer shell through the discharge port and then transported into the collecting box together with the broken ore, so that the ore dust can be recycled.

[0015] Preferably, the blocking plate is provided with a insertion hole, the rotating shaft is located in the insertion hole, the reset member is a coil spring, one end of the coil spring is fixed to the inner wall of the insertion hole, and the other end of the coil spring is fixed to the rotating shaft.

[0016] By adopting the above technical scheme, one end of the coil spring is fixed to the inner wall of the insertion hole, and the other end of the coil spring is fixed to the rotating shaft, so that the blocking plate can be swung downward to be opened, and under the action of no external force, the blocking plate can receive the dust, thereby facilitating the opening of the blocking plate and the dumping of the accumulated dust in the outer shell.

[0017] Preferably, the brush is provided with a contact rod for pushing the blocking plate downward.

[0018] By adopting the above technical scheme, when the brush is brushed downward, the contact rod can contact the blocking plate to swing downward, thereby facilitating the dumping of the accumulated dust in the outer shell.

[0019] Preferably, the dust suction pipe is fixedly connected with a mounting bracket, the side surface of the mounting bracket close to the discharge port is provided with a mounting slot, the filter screen is mounted in the mounting slot, the inner wall of the mounting slot close to the discharge port is provided with a sliding slot, the sliding slot is provided with a control mechanism, the control mechanism comprises a control block slidingly arranged in the sliding slot and an elastic member for blocking the control block from sliding into the sliding slot, the inner wall of the sliding slot is embedded with a fixed contact piece, the control block is embedded with a movable contact piece capable of contacting the fixed contact piece, the dust suction pipe is fixedly connected with a power supply, the movable contact piece is electrically connected with one electrode of the power supply, the other electrode of the power supply is electrically connected with one terminal post of the motor, and the other terminal post of the motor is electrically connected with the fixed contact piece.

[0020] By adopting the above technical scheme, the moving contact piece is electrically connected with one electrode of the power supply, the other electrode of the power supply is electrically connected with one terminal post of the motor, the other terminal post of the motor is electrically connected with the fixed contact piece, when the dust on the filter screen is too much, the negative pressure fan can drive the filter screen to slide the control block into the sliding groove, the moving contact piece is in contact with the fixed contact piece, so that the electric circuit of the motor is turned on, so that when the dust on the filter screen causes the filter screen to be blocked, the motor can be automatically started, so that the brush is automatically lowered from above the filter screen to clean the filter screen.

[0021] Preferably, a limiting groove is formed in the inner wall of the sliding groove, and a limiting block is fixedly connected to the control block and is slidingly arranged in the limiting groove.

[0022] By adopting the above technical scheme, the limiting block is slidingly arranged in the limiting groove, which prevents the control block from separating from the sliding groove, thereby improving the stability of the control block.

[0023] Preferably, the elastic member is a spring, one end of the spring abuts against the side wall of the limiting groove away from the filter screen, and the other end of the spring abuts against the side wall of the limiting block away from the filter screen.

[0024] By adopting the above technical scheme, the spring can generate an elastic force on the limiting block, so that one end of the control block can be kept outside the sliding groove, when the dust on the filter screen accumulates too much, the attraction force generated by the negative pressure fan on the filter screen increases, so that the filter screen can push the control block into the sliding groove, so that the moving contact piece is in contact with the fixed contact piece.

[0025] In a second aspect, the application provides a mine filling tunneling method, which adopts the following technical scheme:

[0026] The mine filling tunneling method comprises the following steps: S1: the VCR mining method is used to mine 35P (-354m / -410m section), the 35P rock drilling chamber is moved down by 4m, i.e., from the -350m level to the -354m level, the conventional ore falling trench is used at the bottom of the -410m level, the ore crushing device is used to load the ore of 35P (-354m / -410m section) into the outer shell from the ore crushing device entrance, the ore is crushed, and the collection box is used to load and transport the ore; S2: after the 35P (-354m / -410m section) is mined and cemented to the -354m level, the upper 35P (-305m / -350m section) is mined, the ore crushing device is used to load the ore of the upper 35P (-305m / -350m section) into the outer shell from the ore crushing device entrance, the ore is crushed, and the collection box is used to load and transport the ore; S3: the bottom ore falling structure of the upper 35P (-305m / -350m section) is used to make the ore roadway in the 35P original rock at the -350m level, the ore roadway and the ore access engineering.

[0027] By adopting the above technical scheme, the bottom ore falling structure is used to make the ore roadway in the 35P original rock at the -350m level, the ore roadway and the ore access engineering, the tunneling support engineering in the filling is avoided, the bottom ore falling trench mining and cutting cost is further reduced, after the 35P (-305m / -350m section) is mined, the filling body is avoided to be excavated upward, the construction efficiency and the construction safety in the original rock are improved, and the recovery rate of the residual ore in the later period is improved.

[0028] In summary, the present application has at least one of the following beneficial technical effects:

[0029] 1. When the negative pressure fan is started, the dust cover can suck dust above the collection box, and through the filtration of the filter screen, the dust raised in the collection box when loading the ore can be collected on the filter screen, the possibility of raising and scattering ore dust to the surrounding environment when pouring the ore into the collection box is reduced, the possibility of inhaling dust by the underground workers is reduced, and the health risk of the underground construction personnel is reduced;

[0030] 2. The drain opening is arranged on the bottom wall of the guide pipe, the rotating shaft is fixed on the inner wall of the drain opening, and the blocking plate is rotatably arranged on the rotating shaft. The dust cleaned by the brush can be discharged into the outer shell through the drain opening and transported into the collection box with the crushed ore, so that the ore dust can be recycled;

[0031] 3. One of the movable contact and the power supply is electrically connected with one electrode of the power supply, the other electrode of the power supply is electrically connected with one terminal of the motor, the other terminal of the motor is electrically connected with the fixed contact, when the dust on the filter screen is too much, the negative pressure fan can drive the filter screen to slide into the sliding groove, the movable contact and the fixed contact are in contact, so that the electric circuit of the motor is turned on, so that when the dust on the filter screen causes the filter screen to be blocked, the motor can be automatically started, so that the discharge brush automatically falls from above the filter screen to clean the filter screen. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is the overall structure schematic diagram of the ore crushing equipment in the embodiment of the application.

[0033] Figure 2 is the vertical sectional view of the ore crushing equipment in the embodiment of the application.

[0034] Figure 3 is the horizontal sectional view of the ore crushing equipment in the embodiment of the application.

[0035] Figure 4 is Figure 2 is the local enlarged view of A in FIG. 7.

[0036] Figure 5 is Figure 2 is the local enlarged view of B in FIG. 7.

[0037] BRIEF DESCRIPTION OF DRAWINGS

[0038] 1, outer shell; 11, discharge port; 2, crushing gear; 3, guide plate; 4, guide plate; 5, reversing plate; 6, collection box; 7, dust suction pipe; 71, dust suction cover; 72, mounting bracket; 721, mounting groove; 722, sliding groove; 723, limiting groove; 73, control mechanism; 731, control block; 732, limiting block; 733, elastic member; 7331, spring; 734, movable contact; 735, fixed contact; 736, power supply; 74, driving mechanism; 741, guide pipe; 742, reciprocating screw; 743, nut seat; 744, driven gear; 745, motor; 746, driving gear; 75, discharge port; 76, rotating shaft; 77, reset member; 771, coil spring; 78, blocking plate; 781, insertion hole; 8, negative pressure fan; 9, filter screen; 100, discharge brush; 101, abutting rod. DETAILED DESCRIPTION

[0039] The application will be further described below with reference to the accompanying drawings. Figures 1-5 The application will be further described below with reference to the accompanying drawings.

[0040] The embodiment of the application discloses a mine ore crushing equipment. Referring to FIG. 1, Figure 1As shown, the ore crushing device comprises an outer shell 1, crushing gears 2, guide plates 3, guide plates 4, reversing plates 5, collection boxes 6, dust suction pipes 7, negative pressure fans 8 and filter screens 9. The crushing gears 2 are arranged in the outer shell 1 and rotate in opposite directions. The crushing gears 2 are spaced apart, and large ore bodies can pass between the crushing gears 2 and be crushed into smaller ore pieces.

[0041] The guide plates 3 are arranged in the outer shell 1 and are symmetrically arranged in the outer shell 1. The guide plates 3 are located below the crushing gears 2. The top of the guide plate 3 is fixedly connected to the inner wall of the outer shell 1. The bottom of the guide plate 3 is inclined downward, and the bottoms of the two guide plates 3 are spaced apart.

[0042] Two discharge ports 11 are formed in the outer shell 1 and are symmetrically arranged on the two sides of the outer shell 1. The guide plates 4 are located below the guide plates 3. The guide plates 4 are arranged in the outer shell 1 and correspond to the discharge ports 11. The guide plates 4 pass through the discharge ports 11. The guide plates 4 are inclined and fixed to the bottom wall of the discharge ports 11. The guide plate 4 located on the inner side of the outer shell 1 is higher than the guide plate 4 located on the outer side of the outer shell 1. The tops of the two guide plates 4 are spaced apart.

[0043] The reversing plates 5 are horizontally arranged in the outer shell 1. The reversing plates 5 are located between the guide plates 3 and the guide plates 4. The top of the reversing plate 5 can abut the bottom of one of the guide plates 3 and the top of the guide plate 4 diagonally opposite to the guide plate 3.

[0044] The collection boxes 6 are arranged on the two sides of the outer shell 1. The crushed ore passes through the guide plates 3, the reversing plates 5 and the guide plates 4 in sequence from top to bottom and falls into the collection boxes 6.

[0045] The dust suction pipes 7 are symmetrically arranged on the outer shell 1. The dust suction pipes 7 pass through the outer shell 1. The two ends of the dust suction pipes 7 are located on the outer side of the outer shell 1. A dust suction cover 71 is arranged on one end of the dust suction pipe 7. The dust suction cover 71 is arranged on the end of the dust suction pipe 7 close to the collection box 6. The dust suction cover 71 corresponds to the collection box 6 and is located above the collection box 6.

[0046] The negative pressure fan 8 is fixedly arranged on the outer side of the outer shell 1. The ends of the two dust suction pipes 7 away from the dust suction cover 71 are communicated with the negative pressure fan 8. The dust suction pipe 7 is a square steel pipe.

[0047] A mounting bracket 72 is fixedly arranged on the inner wall of the filter screen 9. The mounting bracket 72 is in a meandering shape. A meandering mounting groove 721 is formed on the side of the mounting bracket 72 close to the dust suction cover 71. The mounting bracket 72 is located on the inner side of the outer shell 1. The filter screen 9 is arranged in the mounting groove 721.

[0048] The sliding groove 722 is provided with a control mechanism 73. The control mechanism 73 comprises a control block 731, a limiting block 732, an elastic member 733, a movable contact 734, a fixed contact 735 and a power supply 736. The control block 731 is slidingly arranged in the sliding groove 722. The elastic member 733 is a spring 7331. One end of the spring 7331 abuts against the side wall of the limiting groove 723 away from the filter screen 9. The other end of the spring 7331 abuts against the limiting block 732 away from the filter screen 9. Under the elastic force of the spring 7331, one end of the control block 731 is located in the sliding groove 722, and the control block 731 is prevented from sliding into the sliding groove 722.

[0049] The limiting groove 723 is formed in the inner wall of the sliding groove 722. The limiting block 732 is fixedly connected to the control block 731 and slidingly arranged in the limiting groove 723.

[0050] The fixed contact 735 is embedded in the inner wall of the sliding groove 722. The movable contact 734 is embedded in the control block 731. The power supply 736 is fixedly connected to the outer side wall of the dust suction pipe 7. The movable contact 734 is electrically connected to one electrode of the power supply 736. The other electrode of the power supply 736 is electrically connected to one terminal post of the motor 745. The other terminal post of the motor 745 is electrically connected to the fixed contact 735.

[0051] When the dust on the filter screen 9 is excessive, the negative pressure fan 8 can drive the filter screen 9 to slide the control block 731 into the sliding groove 722, and the movable contact 734 contacts the fixed contact 735.

[0052] The filter screen 9 away from the negative pressure fan 8 is provided with a brush 100 for cleaning the filter screen 9. The dust suction pipe 7 is provided with a driving mechanism 74.

[0053] The driving mechanism 74 comprises a guide pipe 741, a reciprocating screw 742, a nut seat 743, a driven gear 744, a motor 745 and a driving gear 746. The guide pipe 741 is fixedly connected to the top surface of the dust suction pipe 7 in a vertical manner. The reciprocating screw 742 is slidingly arranged in the guide pipe 741 in a vertical manner. The reciprocating screw 742 penetrates through the guide pipe 741 and is fixed to the brush 100. The brush 100 is horizontally arranged above the filter screen 9.

[0054] The nut seat 743 is rotationally arranged on the guide pipe 741 and cooperates with the reciprocating screw 742. The driven gear 744 is coaxially fixed to the nut seat 743. The motor 745 is fixedly connected to the guide pipe 741. The driving gear 746 is coaxially fixed to the output shaft of the motor 745 and engages with the driven gear 744.

[0055] A discharge port 75 is formed in the bottom wall of the guide pipe 741 and is located directly below the brush 100. The filter screen 9 and the discharge port 75 are both located on the inner side of the outer shell 1. A rotating shaft 76 is fixedly connected to the inner wall of the discharge port 75. A blocking plate 78 for blocking the discharge port 75 is rotatably arranged on the rotating shaft 76. A reset member 77 for keeping the blocking plate 78 horizontal is arranged between the blocking plate 78 and the rotating shaft 76. A hole 781 is formed in the blocking plate 78, and the rotating shaft 76 is located in the hole 781. The reset member 77 is a coil spring 771. One end of the coil spring 771 is fixed to the inner wall of the hole 781, and the other end of the coil spring 771 is fixed to the rotating shaft 76. The brush 100 is provided with a contact rod 101 for pushing the blocking plate 78 downward.

[0056] The implementation principle of the mine ore crushing device in the embodiment of the present application is as follows: when the negative pressure fan 8 is started, the dust cover 71 can perform dust collection on the upper side of the collection box 6, and through the filtering of the filter screen 9, the dust raised in the collection box 6 during the loading of the ore can be collected on the filter screen 9, thereby reducing the possibility that the ore dust is raised and scattered into the surrounding environment when the ore is poured into the collection box 6, reducing the possibility that the underground workers inhale the dust, and reducing the health risk of the underground construction personnel.

[0057] When the dust on the filter screen 9 is excessive, the negative pressure fan 8 can drive the filter screen 9 to slide the control block 731 into the sliding groove 722, the movable contact 734 is in contact with the fixed contact 735, so that the electric circuit of the motor 745 is turned on, so that when the dust on the filter screen 9 causes the filter screen 9 to be blocked, the motor 745 can be automatically started, so that the brush 100 automatically falls from above the filter screen to clean the filter screen 9.

[0058] The embodiment of the present application also discloses a mine filling tunneling method, which comprises the following steps: S1: performing VCR mining method recovery on 35P (-354m / -410m section), moving the 35P rock drilling chamber as a whole by 4 meters, i.e., moving the -350m level as a whole to the -354m level, using a conventional ore falling trench at the bottom -410m level, using the ore crushing device to load the ore of 35P (-354m / -410m section) from the ore crushing device entrance into the outer shell 1, crushing the ore, and using the collection box 6 to load and transport the ore;

[0059] S2: after the 35P (-354m / -410m section) is recovered to the -354m level by cemented filling, performing recovery work on the upper 35P (-305m / -350m section), using the ore crushing device to load the ore of the upper 35P (-305m / -350m section) from the ore crushing device entrance into the outer shell 1, crushing the ore, and using the collection box 6 to load and transport the ore;

[0060] S3: The bottom of the upper 35P (-305m / -350m section) ore falling structure is used to make the ore receiving roadway in the 35P original rock at the -350m level, the ore outlet roadway, and the ore outlet access engineering.

[0061] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A mine ore crushing device, comprising an outer shell (1), a feeding port formed on the outer shell (1), and a discharging port (11) arranged on one side of the outer shell (1), one side of the discharging port (11) being provided with a collecting box (6) for loading crushed ore, characterized in that: The shell (1) is provided with a dust suction pipe (7), one end of the dust suction pipe (7) is provided with a dust suction cover (71) close to the collecting box (6), the other end of the dust suction pipe (7) is provided with a negative pressure fan (8), a filter screen (9) is installed in the dust suction pipe (7), the dust suction pipe (7) is a steel pipe, a brush cleaning device (100) for cleaning the filter screen (9) is arranged on the side of the filter screen (9) away from the negative pressure fan (8), a driving mechanism (74) for driving the brush cleaning device (100) to reciprocate is arranged on the dust suction pipe (7), the driving mechanism (74) comprises a guide pipe (741) fixedly connected to the dust suction pipe (7), a reciprocating screw (742) is slidably arranged in the guide pipe (741), the reciprocating screw (742) penetrates through the guide pipe (741) and is fixedly connected with the brush cleaning device (100), a nut seat (743) is rotatably arranged on the guide pipe (741), the nut seat (743) is matched with the reciprocating screw (742), a driven gear (744) is sleeved on the nut seat (743), an electric motor (745) is fixedly connected to the guide pipe (741), a driving gear (746) is fixedly connected to the output shaft of the electric motor (745), the driving gear (746) is meshed with the driven gear (744), the reciprocating screw (742) is vertically arranged, the dust suction pipe (7) is a square tube, the middle segment of the dust suction pipe (7) penetrates through the shell (1), a drain port (75) is formed in the bottom wall of the guide pipe (741), the drain port (75) is located directly below the brush cleaning device (100), the filter screen (9) and the drain port (75) are located on the inner side of the shell (1), a rotating shaft (76) is fixedly connected to the inner wall of the drain port (75), a blocking plate (78) for blocking the drain port (75) is rotatably arranged on the rotating shaft (76), a reset member (77) for keeping the blocking plate (78) horizontal is arranged between the blocking plate (78) and the rotating shaft (76), a mounting bracket (72) is fixedly connected in the dust suction pipe (7), a mounting groove (721) is formed in the side of the mounting bracket (72) close to the discharge port (11), the filter screen (9) is mounted in the mounting groove (721), a sliding groove (722) is formed in the inner wall of the mounting groove (721) close to the discharge port (11), a control mechanism (73) is arranged in the sliding groove (722), the control mechanism (73) comprises a control block (731) slidably arranged in the sliding groove (722) and an elastic member (733) for preventing the control block (731) from sliding into the sliding groove (722), a fixed contact (735) is embedded in the inner wall of the sliding groove (722), a movable contact (734) is embedded in the control block (731) and can contact the fixed contact (735), a power supply (736) is fixedly connected to the dust suction pipe (7),The moving contact (734) is electrically connected with one electrode of the power supply (736), the other electrode of the power supply (736) is electrically connected with one terminal pin of the motor (745), the other terminal pin of the motor (745) is electrically connected with the fixed contact (735), and the squeegee (100) is provided with a resisting rod (101) for pushing the plugging plate (78) downward.

2. A mine ore crushing apparatus as claimed in claim 1, wherein: The plug-in hole (781) is arranged on the blocking plate (78), the rotating shaft (76) is located in the plug-in hole (781), and the reset member (77) is a coil spring (771).

3. A mine ore crushing apparatus as claimed in claim 1, wherein: The limiting groove (723) is arranged on the inner wall of the sliding groove (722), and the limiting block (732) is fixedly connected to the control block (731) and is slidingly arranged in the limiting groove (723).

4. A mine ore crushing apparatus as claimed in claim 3, wherein: The elastic member (733) is a spring (7331), one end of the spring (7331) abuts against the side wall of the limiting groove (723) away from the filter screen (9), and the other end of the spring (7331) abuts against the side wall of the limiting block (732) away from the filter screen (9).

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