CN218222590U - Raw material crushing device - Google Patents

Abstract

The utility model relates to a breaker technical field specifically is a raw material crushing device, including crushing mechanism and screening mechanism, crushing mechanism includes broken case, and screening mechanism is including screening case, and the bottom of broken case and the top of screening case intercommunication, the well upper portion of broken incasement portion rotate and are connected with the initiative coarse crushing roller and the passive coarse crushing roller of being symmetrical arrangement around being, and the position rotation that just is close to the bottom in the broken incasement is connected with the initiative fine crushing roller and the passive fine crushing roller of being symmetrical arrangement around being, and the swing joint has the ejection of compact baffle of downward sloping in the screening incasement. This raw materials breaker carries out coarse crushing processing through initiative coarse crushing roller and passive coarse crushing roller to raw materials, carries out fine crushing processing through initiative thin crushing roller and passive thin crushing roller to raw materials after the coarse crushing to improve raw materials's crushing efficiency, sieve raw materials after the thin crushing through ejection of compact baffle, the raw materials that the granule accords with the requirement can drop to the incasement that gathers materials downwards.

Description

Raw material crushing device

Technical Field

The utility model relates to a breaker technical field specifically is a raw materials breaker.

Background

The patent with the publication number of CN212758761U discloses a raw material crushing device for medicament processing relates to a medicament processing field, including processing case, the inboard fixedly connected with horizontal pole of processing case, horizontal pole top fixedly connected with motor, motor output end fixedly connected with longitudinal screw, the outside threaded connection of longitudinal screw has the connecting rod, connecting rod bottom fixedly connected with extrusion piece, the inboard fixedly connected with locating piece of processing case, fixedly connected with spring on the locating piece, spring top fixedly connected with processing bottom plate, processing bottom plate middle part fixedly connected with screen cloth, the processing incasement side is connected with the extrusion bottom plate through the torsional spring rotation, and the extrusion bottom plate cooperatees with the extrusion piece. The utility model discloses simple structure, through motor drive extrusion piece up-and-down motion when convenient to use, extrusion piece and extrusion bottom plate cooperation extrude the medicament raw materials, and the raw materials after the extrusion can also cooperate the screening in step, is favorable to the extrusion of medicament behind the screening of qualified medicament, and is efficient.

According to the technical scheme, when the raw material crushing device is implemented specifically, the extrusion block moves downwards and contacts with the extrusion bottom plate, the extrusion bottom plate is driven to swing downwards, the extrusion block extrudes and crushes the raw materials gathered towards the middle, in the process, the raw materials at the bottom end of the extrusion bottom plate are located in the middle of the top of the processing bottom plate, the middle of the processing bottom plate is provided with the screen, whether the screen has enough strength to match with the extrusion force generated when the extrusion block crushes the raw materials or not is not considered, the processing bottom plate can move downwards under the action of the spring after being stressed, so that the raw materials in the middle of the surface of the screen are difficult to crush by the extrusion block, if the extrusion block excessively extrudes downwards, the spring is damaged, the processing bottom plate and the screen directly lose the action, the uncrushed raw materials can be diffused on the screen, and the uncrushed raw materials are difficult to be always accumulated in the middle of the surface of the screen, therefore, the crushing effect of the raw materials for medicines is not good, and the raw material crushing device is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a raw materials breaker to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a raw material crushing device comprises a crushing mechanism and a screening mechanism, wherein the crushing mechanism comprises a crushing box, the top of the crushing box is provided with a feed opening, the screening mechanism comprises a screening box, the bottom of the crushing box is communicated with the top of the screening box, so that raw materials subjected to secondary crushing enter the screening box, and the raw materials which do not conform to the size of particles are screened;

the middle upper part inside the crushing box is rotatably connected with an active coarse crushing roller and a passive coarse crushing roller which are symmetrically arranged front and back, so that the poured medicine raw materials are coarsely crushed, the position in the crushing box and close to the bottom is rotatably connected with an active fine crushing roller and a passive fine crushing roller which are symmetrically arranged front and back, so that the medicine raw materials after coarse crushing are secondarily crushed, and the crushing rate of the medicine raw materials can be improved through fractional crushing;

the middle lower parts of the front side and the rear side of the inner wall of the screening box are respectively provided with a strip-shaped fixed plate, the top parts of the two strip-shaped fixed plates and the positions close to the left end are respectively provided with a high spring, the top parts of the two strip-shaped fixed plates and the positions close to the right end are respectively provided with a low spring, so that the left end of the discharging guide plate is higher than the right end, the discharging guide plate is arranged obliquely, the crushed medicine raw materials are screened favorably, the top ends of the two high springs and the top ends of the two low springs are connected with the discharging guide plate together, the right end of the discharging guide plate is downwards inclined to penetrate through the right side of the inner wall of the screening box to the outside, the medicine raw materials with larger particles are led out, and the crushing treatment needs to be carried out again;

the bottom of screening case is equipped with out the hopper for derive the broken medicine raw materials that meet the requirements.

Preferably, the position that just is close to the top in the crushing incasement is equipped with and is used for leading the raw materials to the first guide fill in initiative coarse crushing roller and passive coarse crushing roller middle part, makes the medicine raw materials of pouring into can the rapid draing to the relative rolling clearance department of initiative coarse crushing roller and passive coarse crushing roller, improves crushing efficiency, the inside well lower part of crushing incasement is equipped with and is used for leading the raw materials after the coarse crushing to the second guide fill in initiative thin crushing roller and passive thin crushing roller middle part, leads the medicine raw materials after the coarse crushing fast to the relative rolling clearance department of initiative thin crushing roller and passive thin crushing roller, improves crushing efficiency.

Preferably, the active fine crushing roller is positioned under the active coarse crushing roller, the passive fine crushing roller is positioned under the passive coarse crushing roller, the right end of the rotating shaft of the active coarse crushing roller penetrates through the right side of the inner wall of the crushing box and is coaxially connected with a first driving gear, the right end of the rotating shaft of the passive coarse crushing roller penetrates through the right side of the inner wall of the crushing box and is coaxially connected with a first driven gear, the first driven gear is in meshing transmission with the first driving gear, and the active coarse crushing roller drives the passive coarse crushing roller to rotate relatively;

the right end of the active fine crushing roller rotating shaft penetrates through the right side of the inner wall of the crushing box and is coaxially connected with a second driving gear, the right end of the driven fine crushing roller rotating shaft penetrates through the right side of the inner wall of the crushing box and is coaxially connected with a second driven gear, the second driving gear and the second driven gear are in meshing transmission, and the active fine crushing roller drives the driven fine crushing roller to rotate relatively.

Preferably, the left end of the rotating shaft of the driving coarse crushing roller penetrates through the left side of the inner wall of the crushing box, a driving wheel is arranged on the outer wall of the rotating shaft of the driving coarse crushing roller and close to the left end of the rotating shaft of the driving fine crushing roller, the left end of the rotating shaft of the driving fine crushing roller penetrates through the left side of the inner wall of the crushing box, a driven wheel is arranged on the outer wall of the rotating shaft of the driving fine crushing roller and close to the left end of the rotating shaft of the driving fine crushing roller, the driving wheel is in transmission connection with the driven wheel through a transmission belt, and the driven wheel and the driving wheel are the same in size, so that the driven wheel synchronously rotates along with the driving wheel;

the left side of broken case is equipped with first motor through the mounting panel, the tip of first motor output shaft and the left end coaxial coupling of initiative coarse crushing roller pivot rotate through first motor drive initiative coarse crushing roller, and initiative coarse crushing roller passes through the drive belt and drives the synchronous rotation of initiative fine crushing roller to make initiative coarse crushing roller, passive coarse crushing roller, initiative fine crushing roller and passive fine crushing roller rotate in step.

Preferably, the position that just is close to the top in the screening case is equipped with and is used for leading the raw materials after the thin breakage to the dysmorphism guide fill of ejection of compact baffle left end, leads the left end of the medicine raw materials after the thin breakage to ejection of compact baffle, can make the ejection of compact baffle fully carry out screening treatment to the medicine raw materials after the thin breakage, be equipped with the screen cloth on the ejection of compact baffle, make the granule meet the requirements the medicine raw materials drop downwards, derive the great medicine raw materials of granule.

Preferably, four edges of screening bottom of the case portion all are equipped with the landing leg, will screen the case and prop up, the case that gathers materials has been placed under the screening case for collect the medicine raw materials that meet the requirements of deriving from a hopper.

Preferably, screening incasement wall around and between the both sides and be close to the left position rotation in ejection of compact baffle bottom and be connected with the axis of rotation, the outer wall of axis of rotation is equipped with a plurality of cams that are arranged around equidistance, works as when the most advanced of cam is vertical upwards, the cam promotes the screen cloth rebound, the rear side of screening case is equipped with the second motor through the mounting panel, the tip of second motor output shaft pass the rear side of screening case and with the rear end coaxial coupling of axis of rotation, rotate through second motor drive axis of rotation to drive a plurality of cams and rotate, promote ejection of compact baffle clearance rebound, thereby make ejection of compact baffle carry out screening process to the medicine raw materials after the thin breakage.

Compared with the prior art, the beneficial effects of the utility model are that:

1. this raw materials breaker, can carry out coarse crushing to leading-in raw materials through the initiative coarse crushing roller and the passive coarse crushing roller that set up, can carry out fine crushing to the raw materials after coarse crushing through the initiative fine crushing roller and the passive fine crushing roller that set up, thereby improve raw materials's crushing efficiency, can sieve the raw materials after fine crushing through ejection of compact baffle, derive the raw materials that the granule is not conform to the requirement, the raw materials that the granule meets the requirements can drop to the incasement that gathers materials downwards.

2. The first motor can drive the active coarse crushing roller, the passive coarse crushing roller, the active fine crushing roller and the passive fine crushing roller to synchronously rotate, so that the number of driving pieces is reduced, and later maintenance is facilitated; rotate through second motor drive axis of rotation, the axis of rotation rotates and drives a plurality of cams and rotate to carry out the clearance nature to ejection of compact baffle and promote, improve the screening effect of ejection of compact baffle.

Drawings

Fig. 1 is a schematic view of an overall first viewing angle structure of the present invention;

fig. 2 is a schematic view of an overall second viewing angle structure of the present invention;

fig. 3 is a schematic view of the overall third viewing angle structure of the present invention;

FIG. 4 is a partial schematic structural view of the present invention;

FIG. 5 is a schematic view of the inner structure of the crushing box of the present invention;

fig. 6 is a schematic structural diagram of an internal part of the sieving box of the present invention.

In the figure: the crushing mechanism 1, the crushing box 10, the first material guide hopper 11, the driving rough crushing roller 12, the first driving gear 120, the driving wheel 121, the driven rough crushing roller 13, the first driven gear 130, the second material guide hopper 14, the driving fine crushing roller 15, the second driving gear 150, the driven wheel 151, the driven fine crushing roller 16, the second driven gear 160, the screening mechanism 2, the screening box 20, the special-shaped material guide hopper 21, the discharging guide plate 22, the screen 220, the bar-shaped fixing plate 23, the high-elasticity spring 24, the low spring 25, the discharging hopper 26, the supporting legs 27, the material collecting box 3, the first motor 4, the transmission belt 5, the second motor 6, the rotating shaft 7 and the cam 8.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Referring to fig. 1-6, the present invention provides a technical solution:

a raw material crushing device comprises a crushing mechanism 1 and a screening mechanism 2, wherein the crushing mechanism 1 comprises a crushing box 10, a feeding port is formed in the top of the crushing box 10, the screening mechanism 2 comprises a screening box 20, the bottom of the crushing box 10 is communicated with the top of the screening box 20, so that raw materials subjected to secondary crushing enter the screening box 20, and the raw materials which do not conform to the size of particles are screened;

the middle upper part inside the crushing box 10 is rotatably connected with an active coarse crushing roller 12 and a passive coarse crushing roller 13 which are symmetrically arranged front and back, the poured medicine raw material is coarsely crushed, the position in the crushing box 10 and close to the bottom is rotatably connected with an active fine crushing roller 15 and a passive fine crushing roller 16 which are symmetrically arranged front and back, the medicine raw material after coarse crushing is secondarily crushed, and the crushing rate of the medicine raw material can be improved through fractional crushing;

the middle-lower parts of the front side and the rear side of the inner wall of the screening box 20 are respectively provided with a strip-shaped fixing plate 23, the top parts of the two strip-shaped fixing plates 23 and the positions close to the left end are respectively provided with a high spring 24, the top parts of the two strip-shaped fixing plates 23 and the positions close to the right end are respectively provided with a low spring 25, the left end of the discharging guide plate 22 is higher than the right end, so that the discharging guide plate 22 is obliquely arranged, screening of crushed medicine raw materials is facilitated, the top ends of the two high springs 24 and the two low springs 25 are jointly connected with the discharging guide plate 22, the right end of the discharging guide plate 22 is obliquely downwards inclined to penetrate through the right side of the inner wall of the screening box 20 to the outside, the medicine raw materials with larger particles are led out, and crushing treatment needs to be carried out again;

the bottom of the screening box 20 is provided with a discharge hopper 26 for discharging the broken drug raw materials meeting the requirements.

In this embodiment, a first material guiding hopper 11 for guiding the raw material to the middle of the active coarse crushing roller 12 and the passive coarse crushing roller 13 is disposed at a position close to the top of the crushing box 10, so that the poured medicine raw material can rapidly move to the gap between the active coarse crushing roller 12 and the passive coarse crushing roller 13, thereby improving the crushing efficiency, a second material guiding hopper 14 for guiding the raw material after coarse crushing to the middle of the active fine crushing roller 15 and the passive fine crushing roller 16 is disposed at the middle lower part of the inside of the crushing box 10, and a gap between the active fine crushing roller 15 and the passive fine crushing roller 16 is rapidly guided to the drug raw material after coarse crushing, thereby improving the crushing efficiency.

Specifically, the active fine crushing roller 15 is located under the active coarse crushing roller 12, the passive fine crushing roller 16 is located under the passive coarse crushing roller 13, the right end of the rotating shaft of the active coarse crushing roller 12 passes through the right side of the inner wall of the crushing box 10 and is coaxially connected with a first driving gear 120, the right end of the rotating shaft of the passive coarse crushing roller 13 passes through the right side of the inner wall of the crushing box 10 and is coaxially connected with a first driven gear 130, the first driven gear 130 is meshed with the first driving gear 120 for transmission, and the active coarse crushing roller 12 drives the passive coarse crushing roller 13 to rotate relatively;

the right end of the rotating shaft of the driving fine crushing roller 15 penetrates through the right side of the inner wall of the crushing box 10 and is coaxially connected with a second driving gear 150, the right end of the rotating shaft of the driven fine crushing roller 16 penetrates through the right side of the inner wall of the crushing box 10 and is coaxially connected with a second driven gear 160, the second driving gear 150 is in meshing transmission with the second driven gear 160, and the driving fine crushing roller 15 drives the driven fine crushing roller 16 to rotate relatively.

Further, the left end of the rotating shaft of the driving coarse crushing roller 12 penetrates through the left side of the inner wall of the crushing box 10, a driving wheel 121 is arranged on the outer wall of the rotating shaft of the driving coarse crushing roller 12 and close to the left end of the rotating shaft, the left end of the rotating shaft of the driving fine crushing roller 15 penetrates through the left side of the inner wall of the crushing box 10, a driven wheel 151 is arranged on the outer wall of the rotating shaft of the driving fine crushing roller 15 and close to the left end of the rotating shaft of the driving fine crushing roller, the driving wheel 121 is in transmission connection with the driven wheel 151 through a transmission belt 5, and the driven wheel 151 and the driving wheel 121 are the same in size, so that the driven wheel 151 synchronously rotates along with the driving wheel 121;

the left side of broken case 10 is equipped with first motor 4 through the mounting panel, and the tip of the output shaft of first motor 4 and the left end coaxial coupling of the 12 pivots of initiative coarse crushing roller rotate through the active coarse crushing roller 12 of first motor 4 drive, and initiative coarse crushing roller 12 passes through drive belt 5 and drives the synchronous rotation of the thin crushing roller 15 of initiative to make initiative coarse crushing roller 12, passive thick crushing roller 13, the thin crushing roller 15 of initiative and the synchronous rotation of the thin crushing roller 16 of passive.

Further, the position that just is close to the top in the screening case 20 is equipped with and is used for leading the raw materials after the thin breakage to the dysmorphism guide hopper 21 of ejection of compact baffle 22 left end, leads the left end of ejection of compact baffle 22 with the medicinal raw materials after the thin breakage, can make ejection of compact baffle 22 fully sieve the processing to the medicinal raw materials after the thin breakage, is equipped with screen cloth 220 on the ejection of compact baffle 22, makes the medicinal raw materials that the granule meets the requirements drop downwards, exports the great medicinal raw materials of granule.

Further, four corners of screening case 20 bottom all are equipped with landing leg 27, will screen case 20 and prop up, have placed the case 3 that gathers materials under screening case 20 for collect the pharmaceutical raw materials that meet the requirements that follow hopper 26 is derived.

Further, it is connected with axis of rotation 7 just to be close to the left position rotation in ejection of compact baffle 22 bottom between the front and back both sides of screening case 20 inner wall, the outer wall of axis of rotation 7 is equipped with a plurality of cams 8 that are front and back equidistance and arrange, when the most advanced vertical upwards of cam 8, cam 8 promotes screen cloth 220 rebound, the rear side of screening case 20 is equipped with second motor 6 through the mounting panel, the tip of second motor 6 output shaft wear the rear side of screening case 20 and with the rear end coaxial coupling of axis of rotation 7, rotate through second motor 6 drive axis of rotation 7, thereby drive a plurality of cams 8 and rotate, promote the clearance rebound of ejection of compact baffle 22, thereby make ejection of compact baffle 22 carry out screening process to the pharmaceutical raw materials after the thin breakage.

It should be noted that, in the present invention, the first motor 4 and the second motor 6 are all general standard components or components known by those skilled in the art, and the structure and principle thereof can be known by those skilled in the art through technical manuals or through conventional experimental methods, and the above-mentioned operation principle and process are mainly described, and no description is given to the electrical control.

When the raw material crushing device of the embodiment is used, a user starts the first motor 4 and the second motor 6, then pours the medicine raw material to be crushed into the crushing box 10, under the action of the first motor 4, the active rough crushing roller 12 rotates, the first driving gear 120 drives the first driven gear 130 to rotate, thereby driving the driven rough crushing roller 13 to rotate, the driving wheel 121 drives the driven wheel 151 to rotate through the transmission belt 5, thereby driving the driving fine crushing roller 15 to rotate, the second driving gear 150 driving the second driven gear 160 to rotate, thereby driving the driven fine crushing roller 16 to rotate, the first material guiding bucket 11 guides the poured medicine raw materials to the gap between the driving coarse crushing roller 12 and the driven coarse crushing roller 13 which roll relatively, so that the medicine raw materials are coarsely crushed, the coarsely crushed medicine raw materials are guided to a gap where the driving fine crushing roller 15 and the driven fine crushing roller 16 roll relatively under the action of the second material guiding hopper 14, thereby finely crushing the coarsely crushed medicinal raw materials, effectively improving the crushing efficiency by secondary crushing, guiding the finely crushed medicinal raw materials to the left end of the discharge guide plate 22 under the action of the special-shaped material guide hopper 21, at the moment, under the action of the second motor 6, the rotating shaft 7 drives the plurality of cams 8 to rotate, the discharging guide plate 22 is pushed to move upwards in a clearance manner, under the action of the high spring 24 and the low spring 25, the discharging guide plate 22 can shake up and down, thereby screening the finely crushed medicinal raw materials, the medicinal raw materials with particles meeting the requirements can fall downwards, and is guided into the material collecting box 3 under the action of the discharging hopper 26, the medicine raw materials with particles which do not meet the requirements can be guided out rightwards under the action of the discharging guide plate 22, and can be crushed again after being collected.

The foregoing shows and describes the basic principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides a raw material crushing device, includes crushing mechanism (1) and screening mechanism (2), crushing mechanism (1) is including broken case (10), the dog-house has been seted up at the top of broken case (10), screening mechanism (2) is including screening case (20), the bottom of broken case (10) and the top intercommunication of screening case (20), its characterized in that: the utility model discloses a screening box, including broken case (10), the inside well upper portion of broken case (10) rotates and is connected with initiative coarse crushing roller (12) and passive coarse crushing roller (13) that are the front and back symmetry and arrange, the position that just is close to the bottom in broken case (10) rotates and is connected with initiative fine crushing roller (15) and passive fine crushing roller (16) that are the front and back symmetry and arrange, the well lower part of both sides all is equipped with bar fixed plate (23), two around screening box (20) inner wall the top of bar fixed plate (23) and the position that is close to the left end all are equipped with high spring (24), two the top of high spring (24) and two low spring (25) is connected with ejection of compact baffle (22) jointly, the right side to the external world of screening box (20) inner wall is worn to the downward sloping by the right-hand member of ejection of compact baffle (22), the bottom of screening box (20) is equipped with ejection of compact fill (26).

2. The material crushing apparatus of claim 1, wherein: a first material guide hopper (11) used for guiding raw materials to the middle parts of an active coarse crushing roller (12) and a passive coarse crushing roller (13) is arranged in the crushing box (10) and close to the top, and a second material guide hopper (14) used for guiding the raw materials after coarse crushing to the middle parts of an active fine crushing roller (15) and a passive fine crushing roller (16) is arranged at the middle lower part in the crushing box (10).

3. The material crushing apparatus of claim 1, wherein: the active fine crushing roller (15) is located under the active coarse crushing roller (12), the passive fine crushing roller (16) is located under the passive coarse crushing roller (13), the right end of the rotating shaft of the active coarse crushing roller (12) penetrates through the right side of the inner wall of the crushing box (10) and is coaxially connected with a first driving gear (120), the right end of the rotating shaft of the passive coarse crushing roller (13) penetrates through the right side of the inner wall of the crushing box (10) and is coaxially connected with a first driven gear (130), the first driven gear (130) is in meshing transmission with the first driving gear (120), the right end of the rotating shaft of the active fine crushing roller (15) penetrates through the right side of the inner wall of the crushing box (10) and is coaxially connected with a second driving gear (150), the right end of the rotating shaft of the passive fine crushing roller (16) penetrates through the right side of the inner wall of the crushing box (10) and is coaxially connected with a second driven gear (160), and the second driving gear (150) is in meshing transmission with the second driven gear (160).

4. The feedstock crushing device according to claim 1, wherein: the left end of initiative coarse crushing roller (12) pivot runs through the left side of broken case (10) inner wall, the outer wall of initiative coarse crushing roller (12) pivot and the position that is close to the left end are equipped with action wheel (121), the left end of initiative thin crushing roller (15) pivot runs through the left side of broken case (10) inner wall, the outer wall of initiative thin crushing roller (15) pivot and the position that is close to the left end are equipped with follower (151), action wheel (121) are connected with follower (151) transmission through drive belt (5), the left side of broken case (10) is equipped with first motor (4) through the mounting panel, the tip of first motor (4) output shaft and the left end coaxial coupling of initiative thick crushing roller (12) pivot.

5. The material crushing apparatus of claim 1, wherein: and a special-shaped material guide hopper (21) for guiding the finely crushed raw materials to the left end of the discharge guide plate (22) is arranged in the screening box (20) and at a position close to the top, and a screen (220) is arranged on the discharge guide plate (22).

6. The material crushing apparatus of claim 1, wherein: four corners of screening case (20) bottom all are equipped with landing leg (27), collection workbin (3) have been placed under screening case (20).

7. The material crushing apparatus of claim 1, wherein: screening case (20) inner wall around and between the both sides and be close to left position rotation in ejection of compact baffle (22) bottom and be connected with axis of rotation (7), the outer wall of axis of rotation (7) is equipped with a plurality of cam (8) that are the front and back equidistance and arrange, works as during the most advanced vertical upwards of cam (8), cam (8) promote screen cloth (220) rebound, the rear side of screening case (20) is equipped with second motor (6) through the mounting panel, the tip of second motor (6) output shaft wear the rear side of screening case (20) and with the rear end coaxial coupling of axis of rotation (7).

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