CN210928701U

CN210928701U - Multi-stage crusher

Info

Publication number: CN210928701U
Application number: CN201921824544.4U
Authority: CN
Inventors: 索伟东
Original assignee: Renqiu Weidong Machinery Co ltd
Current assignee: Renqiu Weidong Machinery Co ltd
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2020-07-07
Anticipated expiration: 2029-10-28

Abstract

The utility model discloses a multistage grinder, which comprises a frame, wherein a disc-shaped hopper and a rotary driving mechanism for driving the disc-shaped hopper to rotate are arranged on the frame, a cutting cavity is arranged at the lower part of the disc-shaped hopper on the frame, and a high knife roll and a low knife roll are arranged in the cutting cavity; a plurality of mounting seats are arranged on the knife roll at intervals, the cutter penetrates through the mounting seats along the tangential direction of rotation of the knife roll, and the cutter is fixed on the mounting seats through bolts; the high knife roll and the low knife roll are arranged in the cutting cavity, and the large blocks of broken wood cut by the high knife roll can be cut for the second time by the low knife roll, so that the situation that the large blocks of broken wood block a screen to influence the falling of small blocks of broken wood is avoided, and the overall cutting efficiency is improved; the mounting seat and the cutter on the knife roll protrude out of the surface of the knife roll, so that the cutting effect on trees is good, the blockage caused by broken wood is avoided, and the normal use is kept; the cutter runs through the setting in the mount pad, and is not fragile, convenient dismantlement.

Description

Multi-stage crusher

Technical Field

The utility model relates to a rubbing crusher technical field especially relates to a multistage rubbing crusher.

Background

The pulverizer is a machine for pulverizing large-size solid raw materials into required sizes, and the commonly used pulverizer is mainly used for pulverizing trees for incineration and utilization, and a Chinese patent (publication number: CN205128146U) previously applied by the applicant discloses a movable biomass pulverizing machine which comprises a vehicle body, wherein a rotary disc pulverizing system and a crushed material conveying system are arranged on the vehicle body, and the rotary disc pulverizing system comprises a rotary disc base, a disc-shaped hopper and a rotary driving mechanism; the turntable base is arranged on the vehicle body, and a disc-shaped hopper is horizontally and rotatably arranged on the turntable base; the rotary driving mechanism is arranged on the turntable base and used for driving the disc-shaped hopper to rotate, trees or straws in the disc-shaped hopper can be stirred, and the trees or straws can be conveniently cut; in addition, the cutter on the knife roll of the crushing machine is in a long plate shape, the cutting groove is formed in the bottom of the cutter, when trees or straws are cut, the wood crushing rod is easily blocked in the cutter and the cutting groove, the normal use of the cutter is affected, the cutter is only fixed on the knife roll at the rear side, the upturning torque of the cutter is large during cutting, the connecting part is easy to break, the cutter is not easy to replace after breaking, and great troubles are brought to the work of the wood crushing rod.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to avoid prior art's weak point, provide a multi-stage reduction machine to effectively solve the weak point that exists among the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a multi-stage crusher comprises a rack, wherein a disc-shaped hopper and a rotary driving mechanism for driving the disc-shaped hopper to rotate are arranged on the rack, a cutting cavity is arranged at the lower part of the disc-shaped hopper on the rack, a high knife roll and a low knife roll are arranged in the cutting cavity, and a first driving device for driving the two knife rolls to rotate is arranged on the rack; a feed opening communicated with the cutting cavity is formed in the bottom of the disc-shaped hopper, and the high knife roll extends out of the feed opening upwards into the disc-shaped hopper; the bottom of the cutting cavity is provided with a sieve frame, the sieve frame is arranged in a step shape by matching with the high knife roll and the low knife roll, and the sieve frame is provided with a plurality of openings for the wood crushing rods to fall down; a conveyor belt is arranged at the bottom of the screen frame;

the high knife roll and the low knife roll are respectively provided with a plurality of mounting seats at intervals, the cutter is arranged in the mounting seats in a penetrating mode along the rotation tangential direction of the knife roll, and the cutter is fixed on the mounting seats through bolts.

Furthermore, two striker plates are arranged between the screen frame and the conveyor belt in a retractable manner, and a supporting plate mechanism for controlling the striker plates to open and close is arranged on the frame.

Further, layer board mechanism is including holding in the palm the bracket in striker plate bottom and the actuating mechanism that the drive bracket reciprocated, the both sides of bracket are provided with the rack, the cooperation rack is provided with the guide ring in the frame, actuating mechanism is including setting up gear shaft and the drive gear axle pivoted second drive arrangement in the frame, two racks of cooperation are provided with the gear respectively on the gear shaft.

Furthermore, the upper part of the disc-shaped hopper is provided with a semi-arc-shaped first cover body and a semi-arc-shaped second cover body, the first cover body is fixedly arranged on the disc-shaped hopper, the second cover body can be arranged on the upper part of the first cover body in a rotating mode around the axis of the disc-shaped hopper, and the outer edge of the disc-shaped hopper is provided with a clamp for preventing the second cover body from being separated from the disc-shaped hopper.

The above technical scheme of the utility model following beneficial effect has: the high knife roll and the low knife roll are arranged in the cutting cavity, the large wood chopping rods cut by the high knife roll can be secondarily cut by the low knife roll, the large wood chopping rods are prevented from blocking a screen mesh to influence the falling of small wood chopping rods, the integral blanking efficiency is improved, the high knife roll and the low knife roll work simultaneously, and the integral cutting efficiency is also improved; the mounting seat and the cutter on the knife roll protrude out of the surface of the knife roll, so that the cutting effect on trees is good, the blockage of wood crushing rods cannot be generated, and the normal use is kept; the cutter runs through the setting in the mount pad, and the tool bit of cutter is close to mount pad department, and the moment of torsion that cutter and mount pad received is less, and is not fragile, even damage also convenient dismantlement, labour saving and time saving.

Drawings

Fig. 1 is a perspective view of an embodiment of the present invention;

fig. 2 is a cross-sectional view of an embodiment of the present invention;

FIG. 3 is a perspective view of the inside of the frame according to the embodiment of the present invention;

FIG. 4 is an enlarged view taken at A in FIG. 3;

fig. 5 is an enlarged view at B in fig. 3.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-5, the multi-stage crusher according to the present embodiment comprises a frame 1, a disc-shaped hopper 2 and a rotary driving mechanism 3 for driving the disc-shaped hopper 2 to rotate are arranged on the frame 1, a cutting chamber 1a is arranged on the frame 1 at the lower part of the disc-shaped hopper 2, a high knife roller 4 and a low knife roller 5 are arranged in the cutting chamber 1a, and a first driving device 6 for driving the two knife rollers to rotate is arranged on the frame 1; a feed opening 2a communicated with the cutting cavity 1a is formed in the bottom of the disc-shaped hopper 2, and the high knife roll 4 extends upwards from the feed opening 2a to the disc-shaped hopper 2; the bottom of the cutting cavity 1a is provided with a sieve frame 7, the sieve frame 7 is arranged in a ladder shape by matching with the high knife roll 4 and the low knife roll 5, and the sieve frame 7 is provided with a plurality of openings for the crushed wood to fall down; the bottom of the sieve frame 7 is provided with a conveyor belt 8; the first driving device 6 drives the two knife rolls to rotate, the high knife roll 4 firstly cuts trees in the disc-shaped hopper 2, the wood chippings enter the cutting cavity 1a at the feed opening 2a and are further cut into small pieces, then the small pieces fall down from the sieve frame 7, and after the wood chippings in the cutting cavity 1a are increased, the large wood chippings at the high knife roll 4 can move to the low knife roll 5 along with the sieve frame 7 to be cut for the second time, so that the falling of the small wood chippings at the high knife roll 4 is prevented from being influenced, and the integral blanking efficiency and cutting efficiency are ensured; the crushed materials fall onto a conveyor belt 8 through a screen frame 7 for conveying; preferably, the first driving means 6 is a motor;

a plurality of mounting seats 41 are arranged on the high knife roll 4 and the low knife roll 5 at intervals, a cutter 42 penetrates through the mounting seats 41 along the tangential direction of rotation of the high knife roll 4 or the low knife roll 5, and the cutter 42 is fixed on the mounting seats 41 through bolts; the cutter 42 and the mounting seat 41 protrude out of the surface of the high knife roll 4 or the low knife roll 5, when the high knife roll 4 and the low knife roll 5 rotate, the cutter 42 has the functions of impacting and grinding trees, the efficiency is higher than that of cutting type wood smashing rods, the cutter 42 is not easy to become blunt, the cutter head of the cutter 42 is close to the mounting seat 41, the torque borne by the cutter 42 and the mounting seat 41 is small, the cutter 42 and the mounting seat 41 are not easy to damage, the disassembly is convenient even if the cutter 42 and the mounting seat are damaged, and time and labor are saved; preferably, the front end surface of the cutter 42 is in a structure with hard particle convex points, so that the friction force can be increased, and the grinding effect can be improved;

preferably, two material blocking plates 71 are arranged between the screen frame 7 and the conveyor belt 8 in an openable and closable manner, and a supporting plate mechanism 9 for controlling the material blocking plates 71 to open and close is arranged on the frame 1; the material baffle plate 71 can control the blanking clearance of the wood chipper, namely the scattering degree of the wood chipper falling to the conveyor belt 8, so as to prevent the wood chipper falling to the edge of the conveyor belt 8 and falling in the moving process to influence the neatness;

preferably, the supporting plate mechanism 9 includes a bracket 91 supported at the bottom of the striker plate 71 and a driving mechanism for driving the bracket 91 to move up and down, racks 93 are disposed on two sides of the bracket 91, a guide ring 11 is disposed on the rack 1 in cooperation with the racks 93, the driving mechanism includes a gear shaft 94 disposed on the rack 1 and a second driving device 92 for driving the gear shaft 94 to rotate, and gears 95 are disposed on the gear shaft 94 in cooperation with the two racks 93 respectively; the striker plate 71 is obliquely lapped on the bracket 91, and the second driving device 92 drives the bracket 91 to move up and down through the matching of the gear 95 and the rack 93, so that the opening and closing of the striker plate 71 are controlled; wherein the carriage 91 is located upstream of the cutting chamber 1a in the conveying direction of the conveyor belt 8; preferably, the striker plate 71 is provided with a roller 711 lapped on the bracket 91, so that the friction between the striker plate 71 and the bracket 91 can be reduced, and the opening and closing movement of the striker plate 71 can be conveniently controlled (the downward movement of the striker plate 71 does not exceed 90 degrees); preferably, the second driving device 92 is a servo motor;

preferably, the upper portion of the disc-shaped hopper 2 is provided with a first cover body 21 and a second cover body 22 which are semi-arc-shaped, the first cover body 21 is fixedly arranged on the disc-shaped hopper 2, the second cover body 22 is arranged on the upper portion of the first cover body 21, the second cover body 22 is provided with a rotating shaft 221, the first cover body 21 is provided with a rotating sleeve matched with the rotating shaft 221, the second cover body 22 can rotate around the axis of the disc-shaped hopper 2, the outer edge of the disc-shaped hopper 2 is provided with a clamp 23 for preventing the second cover body 22 from being separated from the disc-shaped hopper 2, and when trees are ground in the disc-shaped hopper 2, the second cover body 22 can rotatably cover the opening of the disc-shaped hopper 2 to.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a multistage grinder, includes the frame, is provided with disk hopper and the rotatory actuating mechanism who drives disk hopper pivoted in the frame, its characterized in that: a cutting cavity is formed in the lower portion of the disc-shaped hopper on the rack, a high knife roll and a low knife roll are arranged in the cutting cavity, and a first driving device for driving the two knife rolls to rotate is arranged on the rack; a feed opening communicated with the cutting cavity is formed in the bottom of the disc-shaped hopper, and the high knife roll extends out of the feed opening upwards into the disc-shaped hopper; the bottom of the cutting cavity is provided with a sieve frame, the sieve frame is arranged in a step shape by matching with the high knife roll and the low knife roll, and the sieve frame is provided with a plurality of openings for crushed wood to fall down; a conveyor belt is arranged at the bottom of the screen frame;

2. A multi-stage crusher as claimed in claim 1, wherein: two striker plates are arranged between the screen frame and the conveyor belt in a retractable manner, and a supporting plate mechanism for controlling the striker plates to open and close is arranged on the frame.

3. A multi-stage crusher as claimed in claim 2, wherein: the supporting plate mechanism comprises a bracket supported at the bottom of the material baffle plate and a driving mechanism for driving the bracket to move up and down, racks are arranged on two sides of the bracket, a guide ring is arranged on the rack in a matched mode, the driving mechanism comprises a gear shaft and a second driving device, the gear shaft is arranged on the rack, the second driving device drives the gear shaft to rotate, and the two racks are matched with gears respectively.

4. A multi-stage crusher as claimed in claim 1, wherein: the upper part of the disc-shaped hopper is provided with a semi-arc-shaped first cover body and a semi-arc-shaped second cover body, the first cover body is fixedly arranged on the disc-shaped hopper, the second cover body can be arranged on the upper part of the first cover body in a manner of rotating around the axis of the disc-shaped hopper, and the outer edge of the disc-shaped hopper is provided with a clamp for preventing the second cover body from being separated from the disc-shaped hopper.