CN220126491U - Multistage crusher - Google Patents

Abstract

The utility model discloses a multistage crusher, comprising: the device comprises a feed hopper, a first-stage conveyor, a first-stage crusher, a second-stage conveyor and a third-stage crusher; the primary conveyor is arranged between the discharge port of the feed hopper and the feed port of the primary crusher, the primary crusher is arranged on the upper part of the secondary crusher, the discharge port of the primary crusher is arranged above the feed port of the secondary crusher, and the secondary conveyor is arranged between the discharge port of the secondary crusher and the feed port of the tertiary crusher. The utility model is convenient for treating the silage, and the treated output can be directly used as the silage for storage.

Description

Multistage crusher

Technical Field

The utility model belongs to the technical field of crushers, and particularly relates to a multistage crusher.

Background

The straw pulverizer is mainly used for cutting crop straws and plant straws with the diameters of branches being less than 5cm, can also be used for cutting various crop straws and pasture, and the finished product can be used for power generation, papermaking, artificial boards, refining hexanol and the like. The crusher for treating corn stalks is usually a hammer crusher, and consists of a material containing slide plate, a crushing chamber, a conveying device and the like. The crushing chamber has rotor comprising disc and movable hammer, and sieve and toothed plate are also the main parts of the crusher. During operation, the processed material enters the crushing chamber from the material containing slide plate, and is subjected to repeated impact, friction and collision on the toothed plate by the hammer sheet rotating at high speed, so that the processed material is crushed step by step until the required granularity is leaked through the sieve holes; the leaked feed is conveyed to a material gathering cylinder through a conveying fan and a conveying pipe, is separated in the material gathering cylinder, is discharged from the lower part for bagging, and is discharged from the upper part.

Silage refers to a method for preserving green succulent silage (fresh corn stalks, pastures and the like) under anaerobic conditions (through microbial fermentation), and high-quality silage raw materials are the material basis for preparing high-quality silage. At present, the existing pulverizer for processing the straws and the cornstalks is focused on pulverizing the cornstalks, so that the pulverized cornstalks are unfavorable for silage and direct production of silage.

Disclosure of Invention

The utility model aims to provide a multistage crusher which is convenient for treating silage, and the treated output can be directly used as silage for storage.

In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

a multi-stage crusher, comprising: the device comprises a feed hopper, a first-stage conveyor, a first-stage crusher, a second-stage conveyor and a third-stage crusher; the primary conveyor is arranged between the discharge port of the feed hopper and the feed port of the primary crusher, the primary crusher is arranged on the upper part of the secondary crusher, the discharge port of the primary crusher is arranged above the feed port of the secondary crusher, and the secondary conveyor is arranged between the discharge port of the secondary crusher and the feed port of the tertiary crusher.

Further, a primary crusher comprising: the device comprises a primary frame, a primary hopper, a stirring roller, a grinding roller and a primary motor; the two ends of the stirring roller are provided with stirring roller rotating shafts, the stirring roller rotating shafts penetrate through the primary hopper and are fixed at the top of the primary frame by the primary bearing seat, the stirring roller rotating shafts at the rear end of the stirring roller are provided with stirring roller gears, stirring blades are uniformly distributed on the outer wall of the stirring roller, and the stirring blades are perpendicular to the outer wall of the stirring roller; the upper part and the lower part of the first-stage hopper are provided with openings, and the outer wall of the first-stage hopper is connected to the first-stage rack; the two ends of the rolling roller are provided with rolling roller rotating shafts, the rolling roller rotating shafts penetrate through the first-stage hopper and are fixed at the middle part of the first-stage frame by the first-stage bearing seat, the two rolling rollers are respectively positioned at two sides of the oblique lower part of the stirring roller, the outer wall of the rolling roller is axially provided with a plurality of tooth knives, the rolling roller rotating shafts at the front end of the rolling roller are provided with rolling roller gears, the rolling roller rotating shafts at the rear end of the rolling roller are provided with linkage gears, the rolling roller gears of the two rolling rollers are meshed, and the linkage gears and the stirring roller gears are connected through chains; the primary motor is fixed on the upper part of the frame platform at the front part of the primary frame, and the rotating shaft of the primary motor is connected with the rotating shaft of the rolling roller.

Further, the feed hopper includes: hopper body and hopper support, hopper body top and bottom opening, the outer wall connection of hopper body is at the top of hopper support.

Further, the front shell is fixed on the upper part of the frame platform, and the two rolling roller gears are positioned in the front shell; the rear shell is fixed at the rear part of the primary frame, the linkage gear, the stirring roller gear and the chain are positioned in the rear shell, and a frame baffle is arranged on the primary frame at the outer side of the rolling roller.

Further, the secondary crusher includes: the two-stage crushing device comprises a second-stage support, two-stage crushing rollers, a second-stage shell and a second-stage motor, wherein the two sides of the second-stage shell are provided with openings, the upper opening is used as a feed inlet and is positioned below the two rolling rollers, the lower part is provided with a discharge outlet, the outer wall of the second-stage shell is fixed on the second-stage support, the two-stage crushing rollers are arranged in the second-stage shell side by side, two ends of the two-stage crushing rollers are provided with crushing roller rotating shafts, the crushing roller rotating shafts penetrate through the second-stage shell and are fixed on the second-stage support through a second-stage bearing seat, and the crushing roller rotating shafts of the two-stage crushing rollers are respectively connected with the rotating shafts of the second-stage motor; the outer wall of the secondary crushing roller is uniformly provided with a plurality of crushing roller cutters which are arranged in a thread shape.

Further, the crushing roller knife is trapezoid in shape, and two sides of the trapezoid are edged.

Further, the three-stage crusher includes: the three-stage support, the three-stage shell, the three-stage crushing roller, the three-stage motor and the three-stage bearing seat; the upper opening of the three-stage shell is used as a feed inlet, the lower part of the three-stage shell is provided with a discharge hole, and the outer wall of the three-stage shell is connected to the three-stage bracket; the two three-stage crushing rollers are arranged in the three-stage shell side by side, the outer wall of each three-stage crushing roller is a tooth-shaped roller surface, crushing roller rotating shafts are arranged at two ends of each three-stage crushing roller, and each crushing roller rotating shaft penetrates through the three-stage shell and is fixed on the three-stage support through the three-stage bearing seat; the crushing roller rotating shaft is connected with the rotating shaft of the three-stage motor.

Further, the lateral part of tertiary breaker is provided with tertiary feeding mechanism, and tertiary feeding mechanism includes: the automatic feeding device comprises a box body, a feeding mechanism bracket, a stirring rack, eccentric transmission, a feeding motor, an eccentric wheel, a transmission shaft, a pull rod and a stirring fork; the feeding mechanism support is connected to the upper part of the three-stage support, the box body is fixed to the top of the feeding mechanism support, the box body is positioned on the upper part of the three-stage shell, the feeding motor is fixed to the outer wall of the box body, the two sides of the top of the box body are respectively provided with a transmission shaft bearing seat, the two ends of the transmission shaft are respectively arranged on the transmission shaft bearing seats, and the end parts of the transmission shaft and the rotating shaft of the feeding motor are connected through eccentric transmission; two ends of the material stirring frame are connected to the inner wall of the box body, and a limiting through hole is longitudinally formed in the middle of the material stirring frame; the eccentric wheel is arranged in the middle of the transmission shaft, and the lower part of the eccentric wheel is hinged with the top of the pull rod; the pull rod is sleeved in the limiting through hole, the spring is sleeved outside the pull rod and positioned in the limiting through hole, the clamping rings are arranged on the outer walls of the pull rod at the two ends of the spring, the bottom of the pull rod is connected with the transverse connecting rod, the tops of the plurality of stirring forks are connected to the bottom of the transverse connecting rod, and the bottoms of the stirring forks are positioned on the upper parts of the two three-stage crushing rollers.

The technical effects of the utility model include:

1. the ultra-large processing capacity can meet the material processing demands of users, three-stage crushing is sequentially carried out, and the materials are convenient to carry out green storage after being processed.

The corn is separated from the straw after harvesting, the coating of the corn is not required to be removed, and the multi-stage crusher is used, so that the treated output is stored as silage, the nutritional value of the corn can be greatly saved, and the digestion and absorption of cows are facilitated; the daily treatment capacity of the equipment is about 80 tons (10 tons/hour), and the requirements of silage treatment and storage in a pasture in a short period can be greatly met.

2. The two-stage conveyor is respectively provided with a magnetic separation component, so that iron impurities in materials are removed to a great extent, and the feed cleaning and the crushing mechanism of the protection device are ensured.

3. The equipment has compact and reliable structure, and accessories can be standardized and generalized, so that the equipment is convenient to maintain and use.

Drawings

FIG. 1 is a schematic view of a multistage crusher according to the present utility model;

FIG. 2 is a schematic structural view of the primary conveyor and the secondary conveyor provided with magnetic separation components in the utility model;

FIG. 3 is a schematic view of the structure of the feed hopper of the present utility model;

FIG. 4 is a schematic view of the structure of the primary crusher of the present utility model;

FIG. 5 is a schematic elevational view of the primary crusher of the present utility model;

FIG. 6 is a right side view of FIG. 5;

FIG. 7 is a left side view of FIG. 5;

FIG. 8 is a schematic view of the structure of the secondary crusher of the present utility model;

FIG. 9 is a schematic elevational view of a secondary crusher of the present utility model;

fig. 10 is a left side view of fig. 9;

FIG. 11 is a top view of FIG. 9;

FIG. 12 is a schematic view of the structure of a three-stage crusher of the present utility model;

FIG. 13 is a schematic view of the longitudinal cross-sectional structure of the three-stage crusher of the present utility model;

FIG. 14 is a schematic view of a three stage feed mechanism in accordance with the present utility model;

fig. 15 is a left side view of fig. 14;

FIG. 16 is a top view of FIG. 14;

FIG. 17 is a schematic view of the longitudinal cross-sectional structure of the three-stage feed mechanism of the present utility model;

fig. 18 is a flow chart of a method of using the multi-stage crusher of the present utility model.

Detailed Description

The following description fully illustrates the specific embodiments of the utility model to enable those skilled in the art to practice and reproduce it.

Through the visit and investigation of some pastures, the basic requirements (the crushing degree and the processing amount of corns) of the pastures on corn processing are known, and a multi-stage crusher (mainly used as corn crushing equipment) is specially developed and manufactured, and is a large wet corn crushing equipment specially designed and used for the pastures.

As shown in fig. 1, a schematic structure of the multi-stage crusher according to the present utility model is shown.

A multi-stage crusher, comprising: the device comprises a feed hopper 1, a primary conveyor 2, a primary crusher 3, a secondary crusher 4, a secondary conveyor 5 and a tertiary crusher 6; the primary conveyor 2 is arranged between a discharge hole of the feed hopper 1 and a feed hole of the primary crusher 3, the primary crusher 3 is positioned on the upper part of the secondary crusher 4, the discharge hole of the primary crusher 3 is positioned above the feed hole of the secondary crusher 4, and the secondary conveyor 5 is arranged between the discharge hole of the secondary crusher 4 and the feed hole of the tertiary crusher 6.

As shown in fig. 2, the primary conveyor 2 and the secondary conveyor 5 according to the present utility model are each provided with a magnetic separation member 7.

In order to prevent the iron components from being mixed in the feed, a magnetic separation component 7 is arranged above the primary conveyor 2 and the secondary conveyor 5, and when the materials conveyed by the primary conveyor 2 and the secondary conveyor 5 pass below the magnetic separation component 7, the magnetic separation component 7 can adsorb and remove the mixed iron objects.

Fig. 3 shows a schematic structure of the feed hopper 1 according to the present utility model.

The feed hopper 1 comprises: hopper body 11 and hopper support 12, hopper body 11 top and bottom opening, hopper body 11's outer wall connection is at the top of hopper support 12.

The materials (corn stalks) are put into the hopper body 11, fall onto the horizontal section of the primary conveyor 2 from the bottom discharge hole, and enter the primary crusher 3 through the primary conveyor 2. The full capacity of the hopper body 11 is about 2.5m ³ The capacity of the device can ensure that the device can continuously process materials in the process of transferring the loading device back and forth.

As shown in fig. 4, a schematic structural view of the primary crusher 3 of the present utility model is shown; as shown in fig. 5, a schematic front view of the primary crusher 3 according to the present utility model is shown; as shown in fig. 6, which is a right side view of fig. 5; as shown in fig. 7, is a left side view of fig. 5.

A primary crusher 3 comprising: the device comprises a primary frame 31, a primary hopper 32, a stirring roller 33, two rolling rollers 34 and a primary motor 37; the two ends of the stirring roller 33 are provided with stirring roller rotating shafts, the stirring roller rotating shafts penetrate through the primary hopper 32 and are fixed at the top of the primary frame 31 by the primary bearing seat 38, the stirring roller rotating shafts at the rear end of the stirring roller 33 are provided with stirring roller gears 331, stirring blades 332 are uniformly distributed on the outer wall of the stirring roller 33, and the stirring blades 332 are perpendicular to the outer wall of the stirring roller 33; the upper side and the lower side of the primary hopper 32 are opened, and the outer wall of the primary hopper is connected to the primary frame 31; the two ends of the grinding roller 34 are provided with grinding roller rotating shafts, the grinding roller rotating shafts penetrate through the first-stage hopper 32 and are fixed at the middle part of the first-stage rack 31 by utilizing the first-stage bearing seat 38, the two grinding rollers 34 are respectively positioned at two sides obliquely below the stirring roller 33, the outer wall of the grinding roller 34 is axially provided with a plurality of tooth cutters, the grinding roller rotating shafts at the front end of the grinding roller 34 are provided with grinding roller gears 341, the grinding roller rotating shafts at the rear end of the grinding roller 34 are provided with linkage gears 342, the grinding roller gears 341 of the two grinding rollers 34 are meshed, and the linkage gears 342 and the stirring roller gears 331 are connected through chains 39; the primary motor 37 is fixed on the upper part of the frame platform 312 in front of the primary frame 31, and the rotating shaft of the primary motor 37 is connected with the rotating shaft of the grinding roller.

The primary frame 31 outside the platen roller 34 is provided with a frame baffle 311.

The front shell 35 is fixed on the upper part of the frame platform 312, and two rolling roller gears 341 are positioned inside the front shell 35; the rear housing 36 is fixed at the rear of the primary frame 31, and the linkage gear 342, the stirring roller gear 331 and the chain 39 are positioned inside the rear housing 36.

The primary motor 37 drives the two grinding rollers 34 to rotate through the grinding roller gear 341, and the rotation directions of the two grinding rollers 34 are opposite; the grinding roller 34 drives the stirring roller 33 to rotate through the linkage gear 342, the stirring roller gear 331 and the chain 39.

The material enters the first hopper 32 of the first-stage crusher 3 through the first-stage conveyor 2, the two rolling rollers 34 rotate relatively, the material stirring blade 332 forcibly brings the material into the gap of the rolling rollers 34, and the toothed knife rolls and tears the material for the first time, so that the corn husk and the platycodon root structure are damaged to a great extent, and the second-stage crusher 4 processes the material more efficiently.

The stirring roller 33 rotates along with the grinding roller 34 at the same time, so that the accumulation of materials is avoided, the grinding roller 34 can better bring in the materials, and the material treatment efficiency is improved.

As shown in fig. 8, a schematic structural view of the secondary crusher 4 of the present utility model is shown; as shown in fig. 9, a schematic front view of the secondary crusher 4 according to the present utility model is shown; as shown in fig. 10, which is a left side view of fig. 9; as shown in fig. 11, is a top view of fig. 9.

The secondary crusher 4 comprises: the two-stage crushing device comprises a two-stage bracket 41, two-stage crushing rollers 42, a two-stage shell 43 and a two-stage motor, wherein the two upper sides of the two-stage shell 43 are provided with openings, the upper opening is used as a feed inlet and positioned below the two rolling rollers 34, the lower part is a discharge outlet, the outer wall of the two-stage shell 43 is fixed on the two-stage bracket 41, the two-stage crushing rollers 42 are arranged in the two-stage shell 43 side by side, two ends of the two-stage crushing rollers 42 are provided with crushing roller rotating shafts, the crushing roller rotating shafts penetrate through the two-stage shell 43 and are fixed on the two-stage bracket 41 by utilizing a two-stage bearing seat 45, and the crushing roller rotating shafts of the two-stage crushing rollers 42 are respectively connected with the rotating shafts of the two-stage motor; the outer wall of the secondary crushing roller 42 is uniformly provided with a plurality of crushing roller cutters 44, and the crushing roller cutters 44 are arranged in a thread shape.

The crushing roller blade 44 has a trapezoid shape, and two sides of the trapezoid are provided with cutting edges; the two second-stage crushing rollers 42 are driven by the second-stage motor to rotate in opposite directions, materials enter the feed inlet of the second-stage shell 43 from the lower parts of the two rolling rollers 34, the materials are sheared and crushed by the two crushing roller cutters 44, the materials are crushed for the second time, the materials are crushed sufficiently, and the materials after the second-stage crushing are crushed to a great extent.

As shown in fig. 12, a schematic structural view of the three-stage crusher 6 of the present utility model is shown; fig. 13 is a schematic view showing a longitudinal sectional structure of the three-stage crusher 6 according to the present utility model.

Three-stage crusher 6, comprising: a three-stage bracket 61, a three-stage shell 62, a three-stage crushing roller 63, a three-stage motor and a three-stage bearing seat 64; the upper part of the three-stage shell 62 is provided with an opening (serving as a feed inlet), the lower part of the three-stage shell 62 is provided with a discharge hole, and the outer wall of the three-stage shell 62 is connected to the three-stage bracket 61; the two three-stage crushing rollers 63 are arranged in the three-stage shell 62 side by side, the outer wall of the three-stage crushing roller 63 is a tooth-shaped roller surface, crushing roller rotating shafts are arranged at the two ends of the three-stage crushing roller 63, and pass through the three-stage shell 62 and are fixed on the three-stage support 61 by utilizing the three-stage bearing seat 64; the crushing roller rotating shaft is connected with the rotating shaft of the three-stage motor.

Two three-stage crushing rollers 63 are arranged side by side, and the tooth-shaped roller surfaces are opposite; the materials are sent into the feed inlet of the three-stage shell 62 of the three-stage crusher 6 through the two-stage conveyor 5, the rotation directions of the two three-stage crushing rollers 63 are opposite, the two three-stage crushing rollers 63 rotate at high speed, the materials are brought into opposite tooth-shaped roller surfaces in the rotation, and the tooth-shaped roller surfaces extrude and grind the materials to further crush the materials, so that the materials enter a feed silage link in the most proper state.

The primary motor 37 of the primary conveyor 3 and the tertiary motor of the tertiary crusher 6 are provided with frequency converters by means of which the running speed can be adjusted. The material processing speed of each stage of crushing mechanism is observed in the running process of the equipment, and the running speeds of the primary conveyor 3 and the tertiary crusher 6, the primary conveyor 2 and the secondary conveyor 5 are adjusted through the frequency converter, so that the material processing speeds of all stages are matched, and the material accumulation condition of a certain stage of mechanism is avoided.

As shown in fig. 14, a schematic structural view of a three-stage feeding mechanism 7 in the present utility model; as shown in fig. 15, which is a left side view of fig. 14; as shown in fig. 16, which is a top view of fig. 14; FIG. 17 is a schematic view showing the longitudinal sectional structure of the three-stage feeding mechanism 7 according to the present utility model.

Three-stage feeding mechanism 7 includes: the automatic feeding device comprises a box body 71, a feeding mechanism bracket 72, a stirring rack 73, an eccentric transmission 74, a feeding motor 75, an eccentric wheel 76, a transmission shaft 77, a pull rod 78 and a stirring fork 79; the feeding mechanism support 72 is connected to the upper part of the three-stage support, the box 71 is fixed to the top of the feeding mechanism support 72, the box 71 is positioned on the upper part of the three-stage shell 62, the feeding motor 75 is fixed to the outer wall of the box 71, two sides of the top of the box 71 are respectively provided with a transmission shaft bearing seat 711, two ends of a transmission shaft 77 are respectively arranged on the transmission shaft bearing seat 711, and one end of the transmission shaft 77 and a rotating shaft of the feeding motor 75 are connected through eccentric transmission 74; two ends of the material stirring frame 73 are connected to the inner wall of the box body 71, and a limiting through hole is longitudinally formed in the middle of the material stirring frame 73; the eccentric wheel 76 is arranged in the middle of the transmission shaft 77, and the lower part of the eccentric wheel 76 is hinged with the top of the pull rod 78; the pull rod 78 is sleeved in the limiting through hole, a spring 781 is sleeved outside the pull rod 78, the spring 781 is located in the limiting through hole, a clamping ring is arranged on the outer wall of the pull rod 78 at the outer sides of two ends of the spring 781, the bottom of the pull rod 78 is connected with a transverse connecting rod 782, the tops of a plurality of stirring forks 79 are connected to the bottom of the transverse connecting rod 782, and the bottoms of the stirring forks 79 are located on the upper portions of the two three-stage crushing rollers 63.

The feeding motor 75 drives the eccentric transmission 74 to drive the transmission shaft 77 to rotate, the transmission shaft 77 drives the eccentric wheel 76 to rotate, the eccentric wheel 76 drives the pull rod 78 to reciprocate up and down, the pull rod 78 drives the transverse connecting rod 782 to reciprocate up and down, the transverse connecting rod 782 drives the stirring fork 79 to reciprocate up and down, feeding of the three-stage crusher 6 is assisted, and three-stage crushing efficiency is improved.

When a large amount of materials are processed, the materials are crushed by the primary crusher 3 and the secondary crusher 4 and then are in a fluffy state, and a stacking phenomenon is easy to occur on the two tertiary crushing rollers 63, so that the tertiary crushing rollers 63 can be fully brought into the materials; the material feeding fork 79 feeds the material to the tooth-shaped roller surfaces of the two three-stage crushing rollers 63, so that the feeding effect of the three-stage crushing rollers 63 is well promoted.

As shown in fig. 18, a flow chart of a method of using the multi-stage crusher of the present utility model is shown.

The using method of the multistage crusher comprises the following specific steps:

1. installation of equipment

Selecting a proper place, wherein the space can be used for placing equipment and reserving running and mounting space of material adding and transferring equipment; the ground is flat and firm (concrete casting ground with the mark no lower than C30 and concrete thickness greater than 200 mm) and the equipment is respectively placed according to the arrangement positions of the drawing, and fixed after being adjusted to the proper positions (connecting pieces carried randomly and expansion bolts are connected and fixed with the ground); the frame is reliably connected with the ground, and the connection between the parts is reliable.

The periphery of the equipment is provided with a safety fence (the fence is 800mm away from the equipment), and the equipment and the fence are provided with dangerous warning marks. During operation of the device, all personnel need to be guaranteed to be outside the security guard.

2. Electrical system installation

The cable connection, arrangement, fixation and debugging are carried out by a professional electrical engineer, so that the installation and use safety specifications of an electrical system are met; and the components are delivered for use after the normal operation of the components is observed for power-on trial.

3. Device on commissioning

Before materials are added, the machine is started in an idle mode, and the starting sequence of all functional components is as follows: three-stage crusher 6- & gt three-stage feeding mechanism 7- & gt two-stage conveyor 5- & gt two-stage crusher 4- & gt one-stage crusher 3- & gt one-stage conveyor 2. All the functional components are continuously operated for 30 minutes after reaching the working operation state, and are put into normal use after no abnormality is observed.

4. Material adding device

And each time the equipment is started, no-load starting is required, and materials are added after all the function execution components enter a normal working state.

Firstly, starting up according to the required starting sequence of functional components of the equipment (comprising the steps of a three-stage crusher 6, a three-stage feeding mechanism 7, a two-stage conveyor 5, a two-stage crusher 4, a first-stage crusher 3 and a first-stage conveyor 2 in sequence), adding materials into a feed hopper 1 by using a material adding device when all the components are operated to a working state, enabling the materials to enter a subsequent crushing device through the feed hopper 1 and carrying out intermittent material adding in the operation of the equipment.

5. Plant operation

The material is sent into the feed hopper 1 through the feeding equipment, the material in the feed hopper 1 is sent into the first-stage crusher 3 by the first-stage conveyor 2 to carry out first-stage crushing, the crushed material of the first-stage crusher 3 enters the second-stage crusher 4 to carry out second-stage crushing, the crushed material of the second stage is sent into the third-stage crusher 6 through the second-stage conveyor 5 to continue to carry out third-stage crushing, and the crushed material of the third stage is sent to the silage.

And in the normal material processing process of the equipment, the processing speeds of the crushed materials of the primary crusher 3, the secondary crusher 4 and the tertiary crusher 6 are observed, and if the tertiary crushed materials are piled up, the conveying speed of the primary conveyor 2 is reduced by adjusting, so that the speed proportion of the crushed output materials of each stage is consistent.

The material is additionally arranged in the feed hopper 1 just before the material is discharged, so that the continuous operation of the equipment is ensured to process the material.

Any abnormality is found in the running process of the equipment, the scram button on the control cabinet is immediately pressed, and then the main power supply is turned off to contact with professional maintenance personnel for treatment.

6. Plant shutdown

When no subsequent material is continuously added, the equipment continuously operates, after the material in the feed hopper 1 is observed, and the material which is not conveyed on the first-stage conveyor 2 is also not conveyed, the first-stage conveyor 2 is closed, and the first-stage crusher 3 and the second-stage crusher 4 continuously operate; when no material is produced by the secondary crusher 4, continuing to operate for 1 minute, emptying residual materials, and then closing the primary crusher 3 and the secondary crusher 4; when no material is conveyed on the three-stage crusher 6, the second-stage conveyor 5 is closed; observing that the three-stage crusher 6 continues to run for 1 minute in a no-load mode after no material is produced, and closing the three-stage crusher 6 and the three-stage feeding mechanism 7 after residual materials are emptied; and finally, turning off the total power supply of the equipment.

The terminology used herein is for the purpose of description and illustration only and is not intended to be limiting. As the present utility model may be embodied in several forms without departing from the spirit or essential attributes thereof, it should be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the metes and bounds of the claims, or equivalences of such metes and bounds are therefore intended to be embraced by the appended claims.

Claims (9)

1. A multi-stage crusher, comprising: the device comprises a feed hopper, a first-stage conveyor, a first-stage crusher, a second-stage conveyor and a third-stage crusher; the primary conveyor is arranged between the discharge port of the feed hopper and the feed port of the primary crusher, the primary crusher is arranged on the upper part of the secondary crusher, the discharge port of the primary crusher is arranged above the feed port of the secondary crusher, and the secondary conveyor is arranged between the discharge port of the secondary crusher and the feed port of the tertiary crusher.

2. The multi-stage crusher of claim 1, wherein the primary crusher comprises: the device comprises a primary frame, a primary hopper, a stirring roller, a grinding roller and a primary motor; the two ends of the stirring roller are provided with stirring roller rotating shafts, the stirring roller rotating shafts penetrate through the primary hopper and are fixed at the top of the primary frame by the primary bearing seat, the stirring roller rotating shafts at the rear end of the stirring roller are provided with stirring roller gears, stirring blades are uniformly distributed on the outer wall of the stirring roller, and the stirring blades are perpendicular to the outer wall of the stirring roller; the upper part and the lower part of the first-stage hopper are provided with openings, and the outer wall of the first-stage hopper is connected to the first-stage rack; the two ends of the rolling roller are provided with rolling roller rotating shafts, the rolling roller rotating shafts penetrate through the first-stage hopper and are fixed at the middle part of the first-stage frame by the first-stage bearing seat, the two rolling rollers are respectively positioned at two sides of the oblique lower part of the stirring roller, the outer wall of the rolling roller is axially provided with a plurality of tooth knives, the rolling roller rotating shafts at the front end of the rolling roller are provided with rolling roller gears, the rolling roller rotating shafts at the rear end of the rolling roller are provided with linkage gears, the rolling roller gears of the two rolling rollers are meshed, and the linkage gears and the stirring roller gears are connected through chains; the primary motor is fixed on the upper part of the frame platform at the front part of the primary frame, and the rotating shaft of the primary motor is connected with the rotating shaft of the rolling roller.

3. The multi-stage crusher of claim 2, wherein the feed hopper comprises: hopper body and hopper support, hopper body top and bottom opening, the outer wall connection of hopper body is at the top of hopper support.

4. The multi-stage crusher of claim 2, wherein the front housing is fixed to an upper portion of the frame platform, and the two roller gears are located inside the front housing; the rear shell is fixed at the rear part of the primary frame, the linkage gear, the stirring roller gear and the chain are positioned in the rear shell, and a frame baffle is arranged on the primary frame at the outer side of the rolling roller.

5. The multi-stage crusher of claim 2, wherein the secondary crusher comprises: the two-stage crushing device comprises a second-stage support, two-stage crushing rollers, a second-stage shell and a second-stage motor, wherein the two sides of the second-stage shell are provided with openings, the upper opening is used as a feed inlet and is positioned below the two rolling rollers, the lower part is provided with a discharge outlet, the outer wall of the second-stage shell is fixed on the second-stage support, the two-stage crushing rollers are arranged in the second-stage shell side by side, two ends of the two-stage crushing rollers are provided with crushing roller rotating shafts, the crushing roller rotating shafts penetrate through the second-stage shell and are fixed on the second-stage support through a second-stage bearing seat, and the crushing roller rotating shafts of the two-stage crushing rollers are respectively connected with the rotating shafts of the second-stage motor; the outer wall of the secondary crushing roller is uniformly provided with a plurality of crushing roller cutters which are arranged in a thread shape.

6. The multi-stage crusher of claim 5, wherein the crushing roller blade has a trapezoidal shape with both sides of the trapezoid being sharpened.

7. The multi-stage crusher of claim 1, wherein the three-stage crusher comprises: the three-stage support, the three-stage shell, the three-stage crushing roller, the three-stage motor and the three-stage bearing seat; the upper opening of the three-stage shell is used as a feed inlet, the lower part of the three-stage shell is provided with a discharge hole, and the outer wall of the three-stage shell is connected to the three-stage bracket; the two three-stage crushing rollers are arranged in the three-stage shell side by side, the outer wall of each three-stage crushing roller is a tooth-shaped roller surface, crushing roller rotating shafts are arranged at two ends of each three-stage crushing roller, and each crushing roller rotating shaft penetrates through the three-stage shell and is fixed on the three-stage support through the three-stage bearing seat; the crushing roller rotating shaft is connected with the rotating shaft of the three-stage motor.

8. The multi-stage crusher of claim 7, wherein the side portion of the three-stage crusher is provided with a three-stage feeding mechanism comprising: the automatic feeding device comprises a box body, a feeding mechanism bracket, a stirring rack, eccentric transmission, a feeding motor, an eccentric wheel, a transmission shaft, a pull rod and a stirring fork; the feeding mechanism support is connected to the upper part of the three-stage support, the box body is fixed to the top of the feeding mechanism support, the box body is positioned on the upper part of the three-stage shell, the feeding motor is fixed to the outer wall of the box body, the two sides of the top of the box body are respectively provided with a transmission shaft bearing seat, the two ends of the transmission shaft are respectively arranged on the transmission shaft bearing seats, and the end parts of the transmission shaft and the rotating shaft of the feeding motor are connected through eccentric transmission; two ends of the material stirring frame are connected to the inner wall of the box body, and a limiting through hole is longitudinally formed in the middle of the material stirring frame; the eccentric wheel is arranged in the middle of the transmission shaft, and the lower part of the eccentric wheel is hinged with the top of the pull rod; the pull rod is sleeved in the limiting through hole, the spring is sleeved outside the pull rod and positioned in the limiting through hole, the clamping rings are arranged on the outer walls of the pull rod at the two ends of the spring, the transverse connecting rod is connected to the bottom of the pull rod, the tops of the plurality of stirring forks are connected to the bottoms of the transverse connecting rod, and the bottoms of the stirring forks are positioned on the upper parts of the two three-stage crushing rollers.

9. The multi-stage crusher according to claim 1, wherein magnetic separation means are provided above the primary conveyor and the secondary conveyor.