CN113019892A

CN113019892A - Straw rubbing crusher who possesses screening function

Info

Publication number: CN113019892A
Application number: CN202110222141.8A
Authority: CN
Inventors: 楚新叶
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-28
Filing date: 2021-02-28
Publication date: 2021-06-25

Abstract

The invention relates to the technical field of agricultural machinery and discloses a straw pulverizer with a screening function. According to the invention, when the crushed straws fall on the filter screen, the filter screen is influenced by gravity to drive the extension block to move downwards in the shaking groove, and the extension block can drive the magnet I to move downwards when moving downwards, and because the magnet I and the magnet II are homopolar magnets, when the magnet I is close to the magnet II, the magnet I can meet a rule to repel the magnet I to lift upwards, so that the effect of shaking the filter screen is achieved repeatedly, the qualified straws crushed on the filter screen fall into the collecting box through the filter screen to be collected, and the unqualified straws are discharged through the discharge hole, so that the practicability of the agricultural straw crusher is improved.

Description

Straw rubbing crusher who possesses screening function

Technical Field

The invention relates to the technical field of agricultural machinery, in particular to a straw crusher with a screening function.

Background

Agricultural machinery refers to various machines used in the production process of crop planting industry and animal husbandry, and the primary processing and treatment process of agricultural and animal products, and the agricultural machinery comprises agricultural power machinery, farmland construction machinery, soil cultivation machinery, planting and fertilizing machinery, plant protection machinery, farmland irrigation and drainage machinery, crop harvesting machinery, agricultural product processing machinery, animal husbandry machinery, agricultural transportation machinery and the like.

With the development of agricultural production in recent years, the grain yield is greatly improved, the number of straws is increased, and a great amount of surplus straws are available in rural areas. After the straws are collected and crushed by the crusher, the straw scraps can be used for direct-fired power generation, organic fertilizer manufacturing, paper making or board manufacturing and the like, certain economic value is created, the environment is protected, and the soil is improved. But the straw rubbing crusher for the existing agriculture smashes unevenly and does not have the function of screening, thus reducing the practicability of the straw rubbing crusher for the agriculture and being inconvenient for users to use. Therefore, a straw crusher with a screening function is provided.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a straw pulverizer with a screening function, which solves the problems that the existing agricultural straw pulverizer is not uniform in pulverization and does not have the screening function, reduces the practicability of the agricultural straw pulverizer and is inconvenient for a user to use.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a straw pulverizer with a screening function comprises a main body, wherein a feed hole is formed in the front wall surface of the main body, a support plate is fixedly installed on the front wall surface of the main body corresponding to the position of the feed hole, a connecting block is fixedly installed on the support plate, a feed hole communicated with the opening of the feed hole is formed in the front wall surface of the connecting block, a rotatable rotating roller is arranged on the support plate, a first driving motor for driving the rotating roller to rotate is fixedly installed on the outer wall surface of the right side of the support plate, a water injection device for wetting straws is arranged on the upper wall surface inside the feed hole, a dividing groove is formed in the upper wall surface inside the feed hole, a blade capable of moving up and down is arranged inside the dividing groove, a dividing device for driving the blade to divide the straws is arranged on the upper wall surface of the main body, and a pulverizing device for pulverizing the straws, the straw smashing device comprises a main body and is characterized in that an inclined filter screen is arranged below the smashing device inside the main body, the front end of the filter screen is fixedly connected with the front wall face inside the main body through a hinge, a screening device is arranged at the rear end of the filter screen, a discharge hole is formed in the position, corresponding to the front end of the filter screen, of the front wall face of the main body, a material return hole is formed in the upper wall face of the main body, a collecting hole is formed in the outer wall face of the right side of the main body, and a collecting box used for collecting smashed straws is movably.

Preferably, the sieving mechanism includes shake groove, extension piece, magnet one and magnet two, the shake groove has been seted up to the position of wall behind the inside back wall of main part corresponding filter screen, the back wall fixed mounting of filter screen has the extension piece, the inside that reaches the shake groove is extended backward to the extension piece, the lower wall fixed mounting that the extension piece is located the shake inslot portion has magnet one, the position fixed mounting that the inside bottom surface of shake groove corresponds magnet one has magnet two, magnet one is homopolar with magnet two.

Preferably, the water injection device is including water injection piece, water injection sponge and water injection hole, wall fixed mounting water injection piece on the inside in pan feeding hole, the water injection piece is inside hollow cylindrical structure, just the water injection piece upwards extends the outside that the last wall that runs through the pan feeding hole reachs the connecting block, the internal face of water injection piece corresponds the fixed position that the pan feeding downthehole portion installs the water injection sponge, the water injection sponge extends downwards and runs through the inside that the water injection piece reachs the pan feeding hole, just a lateral wall that the water injection piece was kept away from to the water injection sponge is the arcwall face, the water injection piece is located the one end outer wall in the connecting block outside and offers the water injection hole that is used for the water injection inside the water injection piece.

Preferably, the front side wall surface and the rear side wall surface of the inside of the dividing groove are provided with connecting grooves, the inside of the dividing groove is provided with a connecting plate used for being connected with a blade, the lower wall surface of the connecting plate is fixedly connected with the upper wall surface of the blade, the front end and the rear end of the connecting plate extend towards one side far away from each other to enter the inside of the corresponding connecting grooves, and the first springs used for being connected with the lower wall surface of the corresponding connecting plate are fixedly mounted on the bottom surfaces of the inside of the two connecting grooves.

Preferably, the dividing device includes a squeezing block, a second driving motor and a crushing device, a communication hole for communicating the inside of the dividing groove is formed in the upper wall surface of the main body, the squeezing block is fixedly mounted on the upper wall surface of the connecting plate and is a fan-shaped block, the upper end of the squeezing block penetrates through the inside of the communication hole to reach the upper wall surface of the main body, a cam is fixedly mounted on the upper wall surface of the main body, the crushing device is fixedly mounted at the upper output end of the cam, the crushing device is a block with a narrow upper part and a wide lower part, and the crushing device and the outer wall surface of the squeezing block correspond to each other up and down.

Preferably, the last wall of backup pad is offered and is used for activity joint to rotate the rotation groove of roller bearing, it is semicircular groove for the cross section to rotate the groove, it corresponds from top to bottom with the pan feeding hole to rotate the groove, the outer wall that rotates the roller bearing runs through and rotates the groove and reach the pan feeding downthehole portion, the equal fixed mounting of both sides wall face has the spliced pole about rotating the roller bearing, the circular recess that is used for the swing joint spliced pole has all been offered to the inside left and right sides internal face that rotates the groove, driving motor one goes up the output and extends the inside that corresponds the circular recess that reaches to the corresponding wall that runs through the backup pad to the right side wall fixed connection with corresponding.

Preferably, the pan feeding hole is trapezoidal through-hole, the opening part size of pan feeding hole reduces from front to back gradually, and pan feeding hole rear side opening size is the same with the opening size of feed inlet.

Preferably, the position that main part antetheca face corresponds the relief hole is fixed to be installed with the collection box, the collection box is inside hollow rectangle structure, just the last wall of collection box is the fretwork form.

Preferably, the collecting hole is a rectangular through hole, the collecting box is of an internal hollow rectangular structure, the upper wall surface of the collecting box is hollow, the size of the collecting box is matched with the size of the internal shape of the collecting hole, and the collecting box penetrates through the collecting hole to reach the inside of the main body and vertically corresponds to the filter screen.

Preferably, the water injection block of the supporting plate is a rectangular through hole, and the material return hole and the crushing device correspond to each other up and down.

(III) advantageous effects

Compared with the prior art, the invention provides a straw pulverizer with a screening function, which has the following beneficial effects:

1. the straw pulverizer with the screening function is provided with the screening device, when in use, straws are put into the main body through the feeding hole, then the crushed straws fall on the filter screen after being crushed by the crushing device, when the crushed straws fall on the filter screen, the filter screen is influenced by gravity to drive the extension block to move downwards in the shaking groove, the extension block drives the magnet to move downwards when moving downwards, because the first magnet and the second magnet are homopolar magnets, when the first magnet approaches the second magnet, a repulsion force is encountered to lift the first magnet upwards through the principle that homopolar repulsion of the magnets is generated, the effect of filter screen shake when so reach repeatedly for smash qualified straw on the filter screen and fall into the inside of collecting box through the filter screen and collect, unqualified then discharges through the relief hole, thereby has improved agricultural straw rubbing crusher's practicality.

2. This straw rubbing crusher that possesses screening function, through setting up the water injection device, earlier carry out the water injection through the inside of water injection pore pair water injection piece when using, when the straw gets into main part inside through the pan feeding hole, the last wall of straw can be extruded with the water injection sponge contact on the water injection piece, the water injection sponge is after the extrusion that receives the straw, can paint the surface at the straw with the inside water of water injection piece, thereby make the in-process at reducing mechanism's crushing straw, can not be because the inside piece of main part that the straw too dry leads to scatters everywhere, and then influence the operation of the inside precision component of main part.

3. This straw rubbing crusher that possesses screening function, through setting up cutting device, when the straw gets into the inside of feed port through the pan feeding hole, start two drive cams of driving motor and rotate, when the narrow one end of cam is down, the cam can extrude the extrusion piece downwards, the extrusion piece drives the connecting plate rebound this moment spring atress and takes place deformation, the connecting plate takes the blade to move down and cuts apart the processing to the inside straw of pan feeding hole, when the narrow one end of cam is up, the cam does not extrude the extrusion piece again this moment spring one resume deformation drive connecting plate rebound, the connecting plate drives the inside that the blade was cut apart the groove again, so reach repeatedly and carry out the equidistance to the straw that gets into the main part through the pan feeding hole and cut apart, avoided the straw overlength to be difficult to kibbling problem.

4. This kind of straw rubbing crusher who possesses screening function, through setting up the collection box, when using, can pass through the inside of relief hole discharge main part as unqualified straw piece to fall into the inside of collection box, the staff can carry out the regrinding with the inside of the inside straw piece of collection box through returning the material hole to drop into the main part again afterwards, thereby improves the crushing effect of this equipment to the straw greatly.

5. This straw rubbing crusher who possesses screening function rotates the roller bearing through setting up, when sending into the inside of main part with the straw through the pan feeding hole, can drive to rotate the rotation roller bearing of inslot portion and be anticlockwise rotation through starting driving motor one, and because the outer wall roughness that rotates the roller bearing is three hundred meshes, has improved the frictional force between rotation roller bearing and the straw, has reached the effect that can send into the straw inside of main part fast, improves work efficiency.

6. This straw rubbing crusher who possesses screening function, through setting up the collecting box, the straw piece after processing is accomplished can be collected through the inside collecting box of main part, smashes when accomplishing the back when all straws, and the workman can take out the collecting box from the inside of collecting hole, does unified processing to the inside straw of collecting box, has improved the treatment effeciency to the straw piece greatly.

7. This straw rubbing crusher who possesses screening function through setting up the pan feeding hole, because the pan feeding hole is trapezoidal through-hole for when the straw passes through the inside of pan feeding hole entering main part, the straw can be unified and gather together towards the centre at the in-process that gets into the inside of main part, makes the in-process that the inside blade of feed hole is cutting apart the straw, the stability of straw.

Drawings

FIG. 1 is an overall perspective view of the present invention;

FIG. 2 is a half-sectional view of the main body of the present invention;

FIG. 3 is a half-sectional view of the support plate of the present invention;

FIG. 4 is a top view of the support plate of the present invention;

FIG. 5 is an enlarged view taken at A of FIG. 2 in accordance with the present invention;

FIG. 6 is an enlarged view of the invention at B in FIG. 2.

In the figure: the device comprises a main body 1, a feeding hole 2, a supporting plate 3, a rotating roller 4, a rotating groove 5, a driving motor I6, a connecting block 7, a feeding hole 8, a water injection block 9, a water injection sponge 10, a water injection hole 11, a dividing groove 12, a connecting groove 13, a connecting plate 14, a spring I15, a blade 16, a communicating hole 17, an extrusion block 18, a driving motor II 19, a cam 20, a crushing device 21, a filter screen 22, a shaking groove 23, an extension block 24, a magnet I25, a magnet II 26, a discharge hole 27, a recycling box 28, a recycling hole 29, a collecting box 30, a collecting hole 31, a connecting column 32, a screening device 33, a water injection device 34 and a dividing device 35.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, a straw pulverizer with a screening function comprises a main body 1, wherein the main body 1 is of a hollow rectangular structure, a feeding hole 2 is formed in the front wall surface of the main body 1, the feeding hole 2 is a rectangular through hole, a supporting plate 3 is fixedly installed on the front wall surface of the main body 1 corresponding to the feeding hole 2, the supporting plate 3 is a rectangular plate, a connecting block 7 is fixedly installed on the supporting plate 3, the connecting block 7 is a rectangular block, a feeding hole 8 communicated with the opening of the feeding hole 2 is formed in the front wall surface of the connecting block 7, a rotatable rotating roller 4 is arranged on the supporting plate 3, the rotating roller 4 is a cylindrical block, the roughness of the outer wall surface of the rotating roller 4 is three hundred meshes, a first driving motor 6 for driving the rotating roller 4 to rotate is fixedly installed on the outer wall surface on the right side of the supporting plate 3, the first driving motor 6 is the prior art, the upper wall surface inside the feeding hole 8 is provided with a water injection device 34 for wetting straws, the upper wall surface inside the feeding hole 2 is provided with a dividing groove 12, the dividing groove 12 is a rectangular groove, the dividing groove 12 is internally provided with a blade 16 capable of moving up and down, the blade 16 is the prior art and is not discussed here, the upper wall surface inside the main body 1 is provided with a dividing device 35 for driving the blade 16 to divide the straws, the inside of the main body 1 is fixedly provided with a crushing device 21 for crushing the straws, the crushing device 21 is the prior art and is not discussed here, an inclined filter screen 22 is arranged below the crushing device 21 inside the main body 1, the filter screen 22 is the prior art and is not discussed here, the front end of the filter screen 22 is fixedly connected with the front wall surface inside the main body 1 through a hinge, the rear end of the filter screen 22 is provided with a screening device 33, the front wall of the main body 1 is provided with a discharge hole 27 corresponding to the front end of, the discharge hole 27 is a rectangular through hole, the upper wall surface of the main body 1 is provided with a material return hole 29, the right outer wall surface of the main body 1 is provided with a collecting hole 31, and the inside of the collecting hole 31 is movably clamped with a collecting box 30 for collecting crushed straws.

The screening device 33 includes a shaking groove 23, an extension block 24, a first magnet 25 and a second magnet 26, the shaking groove 23 is formed in the position of the inner rear wall surface of the main body 1 corresponding to the rear wall surface of the filter screen 22, the shaking groove 23 is a rectangular groove, the extension block 24 is fixedly installed on the rear wall surface of the filter screen 22, the extension block 24 is a rectangular block, the shape and size of the extension block 24 are matched with the shape and size of the inner portion of the shaking groove 23, the extension block 24 extends backwards to reach the inner portion of the shaking groove 23, the gap between the extension block 24 and the inner portion of the shaking groove 23 is enough for the extension block 24 to move up and down in the shaking groove 23, the first magnet 25 is fixedly installed on the lower wall surface of the extension block 24 located in the shaking groove 23, the first magnet 25 is a prior art, the second magnet 26 is fixedly installed on the position of the inner bottom surface of the shaking groove 23 corresponding to the first magnet 25, the first magnet 25 and the second magnet 26 are homopolar.

When using, put into the inside of main part 1 through pan feeding hole 8 with the straw, then fall on filter screen 22 after reducing mechanism 21 shredding, when the straw after smashing falls on filter screen 22, receive the inside downstream of filter screen 22 drive extension piece 24 at shake groove 23 of gravity influence, extension piece 24 can drive magnet 25 downstream when moving down, because magnet 25 and magnet 26 are homopolar magnet, magnet homopolar repulsion's principle can meet one when magnet 25 is being close to magnet 26 in-process and has encountered the repellent and upwards held up magnet 25, so reach the effect of filter screen 22 shake repeatedly, make the qualified straw of smashing on the filter screen 22 fall into the inside of collecting box 30 through filter screen 22 and collect, unqualified then discharges through relief hole 27, thereby the practicality of agricultural straw rubbing crusher has been improved.

Water injection device 34 is including water injection piece 9, water injection sponge 10 and water injection hole 11, wall fixed mounting water injection piece 9 on pan feeding hole 8's the inside, water injection piece 9 is inside hollow cylindrical structure, and water injection piece 9 upwards extends the outside that goes up the wall arrival connecting block 7 that runs through pan feeding hole 8, the internal face of water injection piece 9 corresponds the inside fixed position of pan feeding hole 8 and installs water injection sponge 10, water injection sponge 10 is the sponge piece, water injection sponge 10 downwardly extending runs through the inside that water injection piece 9 reachd pan feeding hole 8, and a lateral wall face that water injection sponge 10 kept away from water injection piece 9 is the arcwall face, water injection hole 11 that is used for the inside water injection of water injection piece 9 is offered to the outer wall face of one end that water injection piece 9 is located the connecting block 7 outside, water injection hole 11 is circular shape through-.

Carry out the water injection through water injection hole 11 to the inside of water injection piece 9 earlier when using, when the straw got into main part 1 inside through pan feeding hole 8, the last wall of straw can with the water injection sponge 10 contact extrusion on the water injection piece 9, water injection sponge 10 is after the extrusion that receives the straw, can paint the surface at the straw with the inside water of water injection piece 9, thereby make the in-process of the crushing straw at reducing mechanism 21, can not be because the straw too dry inside piece of main part 1 that leads to scatters everywhere, and then influence the operation of the inside precision component of main part 1.

Connecting grooves 13 are formed in the front side wall face and the rear side wall face of the inside of the dividing groove 12, the connecting grooves 13 are rectangular grooves, connecting plates 14 used for being connected with blades 16 are arranged in the dividing groove 12, the connecting plates 14 are rectangular blocks, the lower wall face of each connecting plate 14 is fixedly connected with the upper wall face of each blade 16, the front end and the rear end of each connecting plate 14 extend towards one side far away from each other to enter the inside of the corresponding connecting groove 13, springs 15 used for being connected with the lower wall face of the corresponding connecting plate 14 are fixedly mounted on the bottom faces of the inside of the two connecting grooves 13, and the springs 15 are in the prior art and are not.

The dividing device 35 comprises a squeezing block 18, a second driving motor 19 and a crushing device 21, a communication hole 17 for communicating the inside of the dividing groove 12 is formed in the upper wall surface of the main body 1, the communication hole 17 is a rectangular through hole, the squeezing block 18 is fixedly installed on the upper wall surface of the connecting plate 14, the squeezing block 18 is a fan-shaped block, the upper end of the squeezing block 18 penetrates through the inside of the communication hole 17 to reach the upper wall surface of the main body 1, a cam 20 is fixedly installed on the upper wall surface of the main body 1, the cam 20 is the prior art, the crushing device 21 is fixedly installed at the upper output end of the cam 20, the crushing device 21 is a block with a narrow upper part and a wide lower part, and the crushing device 21 and the outer wall surface of the.

When the straws enter the feeding hole 2 through the feeding hole 8, the driving motor II 19 is started to drive the cam 20 to rotate, when the narrow end of the cam 20 faces downwards, the cam 20 can downwards extrude the extrusion block 18, the extrusion block 18 drives the connecting plate 14 to downwards move, at the moment, the first spring 15 is stressed to deform, the connecting plate 14 drives the blade 16 to downwards move and cut the straws inside the feeding hole 8, when the narrow end of the cam 20 faces upwards, the cam 20 does not extrude the extrusion block 18, at the moment, the first spring 15 is restored to deform to drive the connecting plate 14 to upwards move, the connecting plate 14 drives the blade 16 to be re-collected into the dividing groove 12, the aim of equally dividing the straws entering the main body 1 through the feeding hole 8 is repeatedly achieved, and the problem that the straws are too long and difficult to crush is avoided.

The last wall of backup pad 3 is offered and is used for activity joint to rotate rotation groove 5 of roller bearing 4, it is semicircular groove for the cross section to rotate groove 5, it corresponds from top to bottom with pan feeding hole 8 to rotate groove 5, the outer wall that rotates roller bearing 4 runs through and rotates inside groove 5 reaches pan feeding hole 8, the equal fixed mounting of both sides wall has spliced pole 32 about rotating roller bearing 4, spliced pole 32 is the columniform piece, the circular recess that is used for swing joint spliced pole 32 is all offered to the inside left and right sides internal face that rotates groove 5, driving motor 6 goes up the inside that corresponds the circular recess is reachd to the corresponding wall that the output extended through backup pad 3 to the left side, and with the right side wall fixed connection who corresponds spliced pole 32.

When the straws are fed into the main body 1 through the feeding hole 8, the rotating roller 4 in the rotating groove 5 can be driven to rotate anticlockwise by starting the driving motor one 6, and the roughness of the outer wall surface of the rotating roller 4 is three hundred meshes, so that the friction force between the rotating roller 4 and the straws is improved, the effect of quickly feeding the straws into the main body 1 is achieved, and the working efficiency is improved.

Pan feeding hole 8 is trapezoidal through-hole, and the lower wall of pan feeding hole 8 intercommunication connecting block 7 down, and the opening part size of pan feeding hole 8 reduces by preceding backward gradually, and 8 rear side openings sizes of pan feeding hole are the same with the opening size of feed port 2.

Because pan feeding hole 8 is trapezoidal through-hole for when the straw passed through pan feeding hole 8 and got into the inside of main part 1, the straw can be gathered together towards the centre in-process in the inside of getting into main part 1 in unison, makes the in-process that feed port 2 inside blade 16 cut apart the straw, the stability of straw.

A recycling box 28 is fixedly arranged on the front wall surface of the main body 1 corresponding to the position of the discharge hole 27, the recycling box 28 is of a hollow rectangular structure, and the upper wall surface of the recycling box 28 is hollow.

The collecting hole 31 is a rectangular through hole, the collecting box 30 is of an internal hollow rectangular structure, the upper wall surface of the collecting box 30 is hollow, the shape and size of the collecting box 30 are matched with the shape and size of the internal part of the collecting hole 31, and the collecting box 30 penetrates through the collecting hole 31 to reach the inside of the main body 1 and vertically corresponds to the filter screen 22.

The straw scraps after the processing is finished can be collected through the collecting box 30 in the main body 1, after all the straws are crushed, the workers can take out the collecting box 30 from the collecting hole 31, the straws in the collecting box 30 are uniformly treated, and the treatment efficiency of the straw scraps is greatly improved.

The water injection block 9 of the supporting plate 3 is a rectangular through hole, and the material return hole 29 and the crushing device 21 are mutually corresponding up and down.

When using, the inside of main part 1 can be discharged through relief hole 27 to unqualified straw piece to fall into the inside of collection box 28, the staff can carry out the regrinding with the inside straw piece of collection box 28 through the inside that returns material hole 29 and drop into main part 1 again afterwards, thereby improves the crushing effect of this equipment to the straw greatly.

Principle of operation

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a straw rubbing crusher who possesses screening function, includes main part (1), feed port (2) have been seted up to the antetheca of main part (1), the antetheca of main part (1) is to the fixed position who corresponds feed port (2) and is installed backup pad (3), fixed mounting has connecting block (7), its characterized in that on backup pad (3): the straw chopping machine is characterized in that a feeding hole (8) communicated with the opening of the feeding hole (2) is formed in the front wall face of the connecting block (7), a rotatable rotating roller (4) is arranged on the supporting plate (3), a first driving motor (6) used for driving the rotating roller (4) to rotate is fixedly mounted on the outer wall face of the right side of the supporting plate (3), a water injection device (34) used for wetting straws is arranged on the upper wall face in the interior of the feeding hole (8), a dividing groove (12) is formed in the upper wall face in the interior of the feeding hole (2), a blade (16) capable of moving up and down is arranged in the interior of the dividing groove (12), a dividing device (35) used for driving the blade (16) to divide straws is arranged on the upper wall face of the main body (1), a smashing device (21) used for smashing straws is fixedly mounted in the interior of the main body (1), and an inclined filter screen (22) is arranged below the smashing device, just the front end of filter screen (22) passes through hinge and the inside antetheca fixed connection of main part (1), the rear end of filter screen (22) is provided with sieving mechanism (33), the antetheca of main part (1) is faced the position that corresponds filter screen (22) front end and has been seted up relief hole (27), feed back hole (29) have been seted up to the last wall of main part (1), collecting hole (31) have been seted up to the outer wall in right side of main part (1), the inside activity joint of collecting hole (31) has collecting box (30) that are used for collecting the straw after smashing.

2. The straw pulverizer with the screening function as claimed in claim 1, wherein: sieving mechanism (33) have been seted up shake groove (23) including shake groove (23), extension piece (24), magnet (25) and magnet two (26), shake groove (23) have been seted up to the position of the inside back wall of main part (1) corresponding filter screen (22) back wall, the back wall fixed mounting of filter screen (22) has extension piece (24), extend piece (24) backward extension and reach the inside of shaking groove (23), it has magnet (25) to be located the inside lower wall fixed mounting in shake groove (23) to extend piece (24), the inside bottom surface of shake groove (23) corresponds the position fixed mounting of magnet (25) and has magnet two (26), magnet (25) are homopolar with magnet two (26).

3. The straw pulverizer with the screening function as claimed in claim 1, wherein: the water injection device (34) comprises a water injection block (9), a water injection sponge (10) and a water injection hole (11), the upper wall surface in the feeding hole (8) is fixedly provided with a water injection block (9), the water injection block (9) is of a hollow cylindrical structure, and the water injection block (9) extends upwards to penetrate through the upper wall surface of the feeding hole (8) to reach the outer side of the connecting block (7), a water injection sponge (10) is fixedly arranged on the inner wall surface of the water injection block (9) corresponding to the position inside the feeding hole (8), the water injection sponge (10) extends downwards to penetrate through the water injection block (9) to reach the inside of the feeding hole (8), and the wall surface of one side of the water injection sponge (10) far away from the water injection block (9) is an arc surface, and a water injection hole (11) for injecting water into the water injection block (9) is formed in the outer wall surface of one end, located on the outer side of the connecting block (7), of the water injection block (9).

4. The straw pulverizer with the screening function as claimed in claim 1, wherein: connecting grooves (13) are formed in the front side wall face and the rear side wall face of the inner portion of the dividing groove (12), connecting plates (14) used for being connected with blades (16) are arranged in the dividing groove (12), the lower wall face of each connecting plate (14) is fixedly connected with the upper wall face of each blade (16), the front end and the rear end of each connecting plate (14) extend towards one side far away from each other to enter the inner portions of the corresponding connecting grooves (13), and first springs (15) used for being connected with the lower wall face of the corresponding connecting plate (14) are fixedly mounted on the bottom faces of the inner portions of the two connecting grooves (13).

5. The straw pulverizer with the screening function as claimed in claim 1, wherein: the cutting device (35) comprises a squeezing block (18), a second driving motor (19) and a smashing device (21), a communicating hole (17) used for communicating the interior of the cutting groove (12) is formed in the upper wall face of the main body (1), the squeezing block (18) is fixedly installed on the upper wall face of the connecting plate (14), the squeezing block (18) is a fan-shaped block, the upper end of the squeezing block (18) penetrates through the interior of the communicating hole (17) to reach the upper wall face of the main body (1), a cam (20) is fixedly installed on the upper wall face of the main body (1), the smashing device (21) is fixedly installed at the upper output end of the cam (20), the smashing device (21) is a block which is narrow at the upper part and wide at the lower part, and the smashing device (21) corresponds to the outer wall face of the squeezing block (18) up.

6. The straw pulverizer with the screening function as claimed in claim 1, wherein: the last wall of backup pad (3) is offered and is used for activity joint to rotate rotation groove (5) of roller bearing (4), it is semicircular groove for the cross section to rotate groove (5), it corresponds from top to bottom with pan feeding hole (8) to rotate groove (5), the outer wall that rotates roller bearing (4) runs through and rotates groove (5) and reach pan feeding hole (8) inside, the equal fixed mounting of both sides wall face has spliced pole (32) about rotating roller bearing (4), the circular recess that is used for swing joint spliced pole (32) is all offered to the inside left and right sides internal face that rotates groove (5), output extends the inside that corresponds the circular recess is reachd to the corresponding wall that runs through backup pad (3) to the left side wall fixed connection on driving motor one (6) to with the right side wall that corresponds spliced pole (32).

7. The straw pulverizer with the screening function as claimed in claim 1, wherein: pan feeding hole (8) are trapezoidal through-hole, the opening part size of pan feeding hole (8) reduces by preceding backward gradually, and pan feeding hole (8) rear side opening size is the same with the opening size of feed port (2).

8. The straw pulverizer with the screening function as claimed in claim 1, wherein: the position fixed mounting that main part (1) antetheca face corresponds relief hole (27) has collection box (28), collection box (28) are inside cavity rectangle structure, just the last wall of collection box (28) is the fretwork form.

9. The straw pulverizer with the screening function as claimed in claim 1, wherein: the collecting hole (31) is a rectangular through hole, the collecting box (30) is of an internal hollow rectangular structure, the upper wall surface of the collecting box (30) is hollow, the shape and the size of the collecting box (30) are matched with those of the internal shape and the size of the collecting hole (31), and the collecting box (30) penetrates through the collecting hole (31) to reach the inside of the main body (1) and vertically corresponds to the filter screen (22).

10. The straw pulverizer with the screening function as claimed in claim 1, wherein: the water injection block (9) of the support plate (3) is a rectangular through hole, and the material return hole (29) and the crushing device (21) are vertically corresponding to each other.