CN115529951A - A kind of straw shredder - Google Patents

Abstract

The invention relates to the technical field of agricultural machinery, and discloses a straw crusher which comprises a crusher body, wherein a straw feeding mechanism, a straw crushing mechanism and a crushing and discharging mechanism are sequentially arranged in the crusher body, a straw cutting mechanism is also arranged between the straw feeding mechanism and the straw crushing and crushing mechanism, the straw feeding mechanism comprises a first feeding roller and a second feeding roller which are arranged in parallel and rotate relatively, the first feeding roller and the second feeding roller are rotatably connected with the crusher body, the straw cutting mechanism comprises a first cutting knife rest and a second cutting knife rest which can move in a reciprocating and opposite manner, the first cutting knife rest and the second cutting knife rest are respectively provided with a first cutting blade and a second cutting blade, and the first feeding roller and the second feeding roller are respectively connected with the first cutting knife rest and the second cutting knife rest through a first driving rod and a second driving rod.

Description

A kind of straw shredder

technical field

The invention relates to the technical field of agricultural machinery, in particular to a straw grinder.

Background technique

Straw is the general term for the stems and leaves (ears) of mature clothing crops, usually referring to the remaining parts of wheat, corn, rice, rape, potato, sugar cane and other clothing crops after harvesting seeds. More than half of the photosynthetic products of clothing crops exist in straw, which is rich in nitrogen, phosphorus, potassium, calcium, magnesium and organic matter, etc. It is a renewable biological resource with multiple uses, such as using straw as biological particles Raw material for fuel.

After the crops are mature, they are harvested by harvesters, and a large amount of straw will be left after harvesting. The traditional treatment method is to incinerate the straw, but the incineration process will produce a lot of dust and smoke, which seriously pollutes the air. , but also caused a waste of resources. In order to solve the above problems, the market usually collects the straw and then crushes it to process it into bio-granular fuel. The straw is generally cut and crushed by a straw crusher. Currently, the hammer mill is the most widely used. Mechanism, crushing chamber, and discharge part are composed of three parts. When working, the material enters the crushing chamber from the feeding mechanism and is continuously hit by the high-speed rotating hammer. At the same time, the material is subjected to strong friction between the screen surface and the hammer. Under the action of repeated blows, collisions and frictions, the materials are gradually crushed and then discharged through the sieve holes.

Due to the long straws such as corn stalks or sorghum stalks, when crushing, the straws are easy to accumulate at the feed inlet, resulting in blockage of the feed inlet, resulting in low crushing efficiency, and it is difficult to ensure the length of the crushed material only by hitting and friction Consistently, there is an adverse effect on the subsequent preparation of bio-pellet fuel. Therefore, it is necessary to manually cut these long straws into small pieces of consistent length and length before feeding, and then put them into the feeding port for crushing, which not only increases the labor of the staff. It also leads to a reduction in the crushing efficiency of straw and an increase in production costs.

Contents of the invention

The purpose of the present invention is to provide a straw grinder, which has the advantages of high crushing efficiency, good crushing effect, high degree of automation, and low labor intensity.

Above-mentioned technical purpose of the present invention is achieved through the following technical solutions:

A straw pulverizer, comprising a body, in which a straw feeding mechanism, a straw pulverizing mechanism, and a pulverizing and discharging mechanism are sequentially arranged, and a straw cutting mechanism is also arranged between the straw feeding mechanism and the straw pulverizing mechanism , the straw feeding mechanism includes a feed roller 1 and a feed roller 2 arranged in parallel and relatively rotating, the feed roller 1 and the feed roller 2 are both connected to the body in rotation, and the straw cutting mechanism includes a reciprocating relative Or the cutting knife rest one and the cutting knife rest two moving in opposite directions, the cutting knife rest one and the cutting knife rest two are provided with the cutting blade one and the cutting blade two respectively, and the feeding roller one and the feeding roller two respectively pass through The first driving rod and the second driving rod are connected with the first cutting blade frame and the second cutting blade frame.

By adopting the above technical scheme, the straw feeding mechanism is used to automatically feed longer straws into the body in sequence, and the straw feeding mechanism utilizes the extrusion force and friction force when the feeding roller 1 and the feeding roller 2 rotate relative to each other, Squeeze the straw and generate a downward pulling force, so that the originally fluffy tubular straw is axially crushed to form a thinner plate, which greatly reduces the volume of the straw entering the body and effectively solves the problem of straw The problem that the feed port is blocked due to the accumulation of the feed port, the feed roller 1 and the feed roller 2 rotate relative to each other, and at the same time drive the cutting blade frame 1 and the cutting blade frame 2 in the straw cutting device to reciprocate through the driving rod 1 and the driving rod 2 respectively Relative or opposite movement, thereby driving the cutting blade 1 and the cutting blade 2 to reciprocate relative or opposite to cut the thin plate-shaped straw radially into uniform segments, and the linkage between the straw feeding mechanism and the straw cutting device is realized. Preliminary crushing, the straw after preliminary crushing forms small segments of the same length and good uniformity, effectively improving the crushing efficiency and crushing effect of the straw crushing and crushing mechanism, and the whole process is automatic, labor-intensive, and the crushing efficiency is high. In addition, after preliminary crushing When the length of the straw is consistent and then enters the straw crushing and crushing mechanism for repeated blows and collisions for further crushing, it can also effectively prevent the long straw from being entangled and piled up in the straw crushing and crushing mechanism and cause damage to the equipment, greatly improving the service life of the equipment .

A further setting of the present invention is: the first and second cutting knife rests are provided with a guide bar perpendicular to the axes of the first feeding roller and the second feeding roller, and the first and second cutting knife rests are respectively Slider 1 and slider 2 are axially slidably connected to the guide rod. The end faces of the feed roller 1 and the feed roller 2 are respectively provided with drive shaft 1 and drive shaft 2. The upper end is respectively connected to the drive shaft one and the drive shaft two, the cutting tool holder one and the cutting tool holder two are provided with the drive shaft three and the drive shaft four respectively, and the lower ends of the drive rod one and the drive rod two are respectively provided with A waist-shaped slotted hole that is rotationally connected with drive shaft three and drive shaft four.

By adopting the above-mentioned technical scheme, the drive rod one and the drive rod two are respectively connected to the feed roller one and the feed roller two, and the cutting blade frame one and the cutting blade frame two are connected to form two sets of crank-slider mechanisms that move relative to each other, so when feeding When the roller 1 and the feeding roller 2 rotate relative to each other, they respectively drive the driving rod 1 and the connecting end of the driving rod 2 to make a circular motion, so that the cutting blade frame 1 and the cutting blade frame 2 connected to the other end of the driving rod 1 and the driving rod 2 follow the The slider 1 and the slider 2 move toward each other or in the opposite direction along the axial direction of the guide rod, thereby driving the cutting blade 1 and the cutting blade 2 fixed on the cutting blade frame 1 and the cutting blade frame 2 to move back and forth toward each other or in the opposite direction, thereby realizing the Straw that is pressed into thin plates is cut radially into uniform segments.

The further configuration of the present invention is: the positions on both sides of the machine body below the straw cutting mechanism are respectively provided with inclined guide plates, and the guide plates are arranged along the axial direction parallel to the feeding roller 1 and the feeding roller 2, so that The upper end of the material guide plate is fixedly connected with the side wall of the body, the lower end of the material guide plate is located below the guide rod, the two ends of the guide rod are respectively fixed on the two material guide plates, and the lower ends of the two material guide plates There is a feeding space between them.

By adopting the above technical scheme, the setting of the material guide plate can mainly play a certain role of diversion, so that the straw cut by the straw cutting mechanism can smoothly fall into the straw crushing and crushing along the feeding space between the lower ends of the two material guide plates. The space in which the institution resides.

A further setting of the present invention is: the straw crushing mechanism includes a central shaft and a hammer, the two ends of the central shaft are respectively connected to the opposite side walls of the machine body in rotation, one end of the central shaft is connected to the driving motor, The central shaft is equidistantly fixed along the axial direction with a plurality of hammer discs coaxial with the central shaft, and several hammer discs are evenly distributed and fixed on the circumference of each hammer disc. The sieve plate, the bottom of the sieve plate is semi-cylindrical.

By adopting the above technical scheme, the cut straw falls into the space where the straw crushing and crushing mechanism is located through the feeding space between the lower ends of the two material guide plates, and at the same time, the shaft is driven by the drive motor to rotate at a high speed, driving the hammer to follow The hammer plate rotates synchronously at high speed. During the hammer rotation process, the incoming straw is continuously struck and collided repeatedly. At the same time, the straw falling on the screen surface is strongly rubbed by the hammer and the sieve plate. Under the process, the material is gradually crushed, and then discharged through the sieve hole. The sieve hole can realize the screening of the crushed straw particles, thus effectively ensuring the crushing effect.

A further setting of the present invention is: after the two ends of the sieve plate extend upwards, the sides close to each other are bent and respectively hinged to the lower ends of the material guide plates on both sides, and the upper ends of the sieve plate are respectively bent and connected to the two sides A gravity hammer 1 and a gravity hammer 2 are respectively arranged between the material guide plates on the side, and the gravity hammer 1 and the gravity hammer 2 are respectively fixed on the lower ends of the hammer rod 1 and the hammer rod 2. The upper ends of the two go through the material guide plates on both sides respectively and extend upwards to be higher than the cutting knife rest one and the cutting knife rest two.

By adopting the above-mentioned technical scheme, the gravity hammer one and the gravity hammer two utilize their own gravity and the collision force when the cutting blade frame one and the cutting blade frame two reciprocate toward each other or reversely move to realize the rotation around the point where they are rotationally connected with the material guide plate, thereby Realize repeated hammering on the sieve plate to make the sieve plate vibrate continuously, which is beneficial to discharge the straw particles on the sieve plate from the sieve holes, thereby further reducing the probability of straw particles accumulating on the sieve plate and effectively ensuring the crushed Straw particles are quickly discharged, which greatly increases the efficiency of straw crushing.

A further configuration of the present invention is that: one end of the central shaft is provided with a pulley 1, and the pulley 1 is synchronously connected with the pulley 2 on the feed roller 1 or the feed roller 2 through the synchronous belt 1, and the feed pulley The same end of the first roller or the second feeding roller is respectively provided with a gear one and a second gear which engage with each other, and the other end of the first feeding roller or the second feeding roller is connected with the other end of the central shaft through the second synchronous belt.

By adopting the above technical scheme, when the central shaft rotates under the drive of the drive motor, it drives the first feeding roller or the second feeding roller to rotate synchronously through the synchronous belt one, and the first feeding roller or the second feeding roller rotates through the gear one meshing with each other. And the gear 2 makes the feed roller 1 and the feed roller 2 relatively rotate, thus realizing the synchronous rotation of the central axis, the feed roller 1 and the feed roller 2, ensuring that the feeding and crushing are carried out synchronously, and effectively reducing the production cost.

The further configuration of the present invention is: the first feeding roller and the second feeding roller are elastic rubber rollers, the surfaces of the first feeding roller and the second feeding roller are provided with embossed lines, and the first feeding roller and the second feeding roller The circumference where the section of the roller two is located is tangent.

By adopting the above technical scheme, the elastic rubber roller has strong elasticity, ensuring that even if there is a small or no gap between the feeding roller 1 and the feeding roller 2, straws of different thicknesses can be squeezed well, ensuring No need to adjust the gap between the two rollers, it can adapt to the extrusion and conveying of straws of different thicknesses. The friction between the first feeding roller and the second feeding roller and the straw further increases the extrusion force and axial pulling force of the straw, thereby further improving the feeding effect of the straw.

The further setting of the present invention is: the crushing and discharging mechanism includes a funnel-shaped discharge hopper located at the bottom of the machine body, the bottom of the discharge hopper is provided with a discharge port, and the discharge port passes through the discharge pipe and the inlet of the screw conveyor. Feed port connection.

By adopting the above technical scheme, the crushed straw particles fall into the discharge pipe through the discharge hopper, and are transported to the designated position by the screw conveyor through the discharge pipe. The straw particles are always in a sealed environment during the entire discharge process and transportation, which can Preventing the crushed straw particles from flying in the air is beneficial to reduce the dust pollution in the workshop. In addition, the discharge hopper is set in a funnel shape, so that the crushed straw particles can smoothly fall into the discharge pipe, effectively preventing the straw particles from being The accumulation under the sieve plate affects the crushing efficiency.

The beneficial effects of the present invention are:

1. The present invention automatically feeds longer straws into the machine body sequentially through the straw feeding mechanism, and the straw feeding mechanism utilizes the extrusion force and friction force when the feeding roller 1 and the feeding roller 2 rotate relative to each other to carry out the feeding of the straw. Squeeze and generate a downward pulling force, so that the originally fluffy tubular straw is axially crushed to form a thinner plate shape, which greatly reduces the volume of the straw entering the body and effectively solves the problem of straw accumulation at the feeding port. As a result of the problem that the feed inlet is blocked, the first feed roller and the second feed roller rotate relative to each other, and at the same time drive the first and second cutting blades in the straw cutting device to reciprocate or face each other through the first driving rod and the second driving rod. movement, thereby driving the cutting blade 1 and the cutting blade 2 to reciprocate relative or oppositely to cut the thin plate-shaped straw into uniform segments in the radial direction, and realize the preliminary crushing of the straw through the linkage of the straw feeding mechanism and the straw cutting device. The primary crushed straw forms small segments of consistent length and good uniformity, effectively improving the crushing efficiency and crushing effect of the straw crushing and crushing mechanism, and the whole process is automatic, labor-intensive, and crushing efficiency is high.

2. The present invention firstly crushes the straw through the straw feeding mechanism and the straw cutting device, so that the length of the primary crushed straw is consistent, and then enters the straw crushing and crushing mechanism for repeated impact and collision for further crushing, and can effectively prevent longer The problem of equipment damage due to entanglement and accumulation of straw in the straw crushing and crushing mechanism greatly improves the service life of the equipment.

3. Gravity hammer one and gravity hammer two among the present invention utilize self gravity and cutting tool rest one and cutting knife rest two to reciprocate oppositely or the collision force when moving in reverse to realize the rotation around the point that it is rotationally connected with the material guide plate, thereby Realize repeated hammering on the sieve plate to make the sieve plate vibrate continuously, which is beneficial to discharge the straw particles on the sieve plate from the sieve holes, thereby further reducing the probability of straw particles accumulating on the sieve plate and effectively ensuring the crushed Straw particles are quickly discharged, which greatly increases the efficiency of straw crushing.

4. In the present invention, the first feeding roller and the second feeding roller are elastic rubber rollers, and the elastic rubber roller has strong elasticity, which ensures that even if the gap between the first feeding roller and the second feeding roller is small or there is no gap, it can It can squeeze straws of different thicknesses very well, ensuring that it can adapt to the extrusion and transportation of straws of different thicknesses without adjusting the gap between the two rollers, and the equipment has better versatility. In addition, the feeding roller 1 and the feeding roller The embossing on the surface of the second roller can better increase the friction between the first feeding roller and the second feeding roller and the straw, and further increase the extrusion force and axial pulling force of the straw, thereby further improving the feeding of the straw. material effect.

5. The crushed straw particles of the present invention fall into the discharge pipe through the discharge hopper, and are transported to the designated position by the screw conveyor through the discharge pipe. The straw particles are always in a sealed environment during the entire discharge process and transportation, which can prevent crushing The finished straw particles fly in the air, which is beneficial to reduce the dust pollution in the workshop. In addition, the discharge hopper is set in a funnel shape, so that the crushed straw particles can smoothly fall into the discharge pipe, effectively preventing the straw particles from being trapped in the sieve plate. The situation that the bottom piles up and affects the crushing efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

Fig. 1 is a schematic cross-sectional structure diagram of a straw pulverizer of the present invention.

FIG. 2 is a partially enlarged schematic diagram of A in FIG. 1 .

Fig. 3 is a schematic diagram of the external structure of a straw pulverizer of the present invention.

In the figure, 1. machine body; 2. straw feeding mechanism; 201, feeding roller 1; 202, feeding roller 2; 3, straw crushing and crushing mechanism; 301, central shaft; 302, hammer; 303, driving motor; 304, hammer disc; 305, sieve plate; 4, crushing and discharging mechanism; 401, hopper; 402, discharge port; 403, discharge pipe; 404, screw conveyor; 5, straw cutting mechanism; 501, cutting Knife rest one; 502, cutting knife rest two; 503, cutting blade one; 504, cutting blade two; 505, guide rod; 506, slide block one; 507, slide block two; 508, drive shaft one; Two; 510, drive shaft three; 511, drive shaft four; 512, waist-shaped long hole; 6, drive rod one; 7, drive rod two; 8, guide plate; 9, gravity hammer one; 11, gravity hammer two 10, hammer rod one; 12, hammer rod two; 13, pulley one; 14, timing belt one; 15, pulley two;

detailed description

The technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

As shown in Figures 1 to 3, a straw pulverizer includes a body 1, and the body 1 is sequentially provided with a straw feeding mechanism 2, a straw pulverizing mechanism 3 and a pulverizing and discharging mechanism 4, and the straw feeding A straw cutting mechanism 5 is also provided between the mechanism 2 and the straw crushing mechanism 3. The straw feeding mechanism 2 includes a feeding roller 1 201 and a feeding roller 2 202 arranged in parallel and relatively rotating. The feeding roller 1 201 and feeding roller 2 202 are both rotatably connected with the machine body 1, and the straw cutting mechanism 5 includes a cutting blade frame 1 501 and a cutting blade frame 2 502 that can reciprocate relative or oppositely move, and the cutting blade frame 1 501 and the cutting blade The frame two 502 is respectively provided with a cutting blade one 503 and a cutting blade two 504, and the feeding roller one 201 and the feeding roller two 202 are connected to the cutting knife frame one 501 and the cutting knife through the driving rod one 6 and the driving rod two 7 respectively. Frame two 502 connections.

Further, the guide bar 505 perpendicular to the axes of the feeding roller 1 201 and the feeding roller 202 is provided below the cutting blade frame 1 501 and the cutting blade frame 2 502, and the cutting blade frame 1 501 and the cutting blade frame The second 502 is axially slidably connected to the guide rod 505 through the first slider 506 and the second slider 507 respectively, and the end faces of the first feeding roller 201 and the second feeding roller 202 are respectively provided with a driving shaft 1 508 and a driving shaft 2 509, The upper ends of the drive rod one 6 and the drive rod two 7 are respectively connected to the drive shaft one 508 and the drive shaft two 509 in rotation, and the cutting knife rest one 501 and the cutting knife rest two 502 are respectively provided with a drive shaft three 510 and a drive shaft two 502. Shaft 4 511, the lower ends of the driving rod 1 6 and the driving rod 2 7 are respectively provided with waist-shaped long holes 512 that are rotationally connected with the driving shaft 3 510 and the driving shaft 4 511.

Further, the positions on both sides of the machine body 1 below the straw cutting mechanism 5 are provided with inclined guide plates 8, and the guide plates 8 are arranged along the axial direction parallel to the feeding roller 1 201 and the feeding roller 2 202. , the upper end of the material guide plate 8 is fixedly connected to the side wall of the body 1, the lower end of the material guide plate 8 is located below the guide rod 505, and the two ends of the guide rod 505 are respectively fixed on the two material guide plates 8, A feeding space is provided between the lower ends of the two material guide plates 8 .

Further, the straw crushing mechanism 3 includes a central shaft 301 and a hammer 302, the two ends of the central shaft 301 are respectively connected to the opposite side walls of the body 1 in rotation, and one end of the central shaft 301 is connected to the drive motor 303 connection, the central shaft 301 is fixed with a plurality of hammer discs 304 coaxial with the central shaft 301 at equal intervals along the axial direction, and several hammer discs 302 are evenly distributed and fixed on the circumference of each hammer disc 304, A sieve plate 305 is provided below the hammer 302, and the bottom of the sieve plate 305 is semi-cylindrical.

Further, after the two ends of the sieve plate 305 extend upwards, the sides close to each other are bent and respectively hinged to the lower ends of the material guide plates 8 on both sides, and the upper ends of the sieve plate 305 are respectively bent and connected to the two sides. Gravity hammer one 9 and gravity hammer two 11 are respectively arranged between the material guide plates 8, and the gravity hammer one 9 and gravity hammer two 11 are respectively fixed on the lower ends of hammer rod one 10 and hammer rod two 12. The upper ends of the hammer rod one 10 and the hammer rod two 12 respectively pass through the material guide plates 8 on both sides and extend upwards to be higher than the cutting blade frame one 501 and the cutting blade frame two 502. The middle parts of the hammer rod one 10 and the hammer rod two 12 They are respectively connected in rotation with the material guide plates 8 on both sides.

Further, one end of the central shaft 301 is provided with a pulley 13, and the pulley 13 is synchronously connected with the pulley 2 15 on the feed roller 1 201 or the feed roller 2 202 through a synchronous belt 14, so The same end of the first feed roller 201 or the second feed roller 202 is respectively provided with a gear one 16 and a second gear 17 meshing with each other, and the other end of the first feed roller 201 or the second feed roller 202 passes through the second synchronous belt 18 It is connected with the other end of the central shaft 301.

Further, the first feeding roller 201 and the second feeding roller 202 are elastic rubber rollers, the surfaces of the first feeding roller 201 and the second feeding roller 202 are provided with raised lines, and the first feeding roller 201 and the second feeding roller The circumference where the section of the entry roller 2 202 is located is tangent.

Further, the crushing and discharging mechanism 4 includes a funnel-shaped discharge hopper 401 located at the bottom of the machine body 1, the bottom of the discharge hopper 401 is provided with a discharge port 402, and the discharge port 402 is conveyed by a discharge pipe 403 and a screw. The feed inlet of machine 404 is connected.

The working principle of the present invention: firstly, the stalks are vertically dropped into the stalk feeding mechanism 2 successively, and the stalk feeding mechanism 2 utilizes the extrusion force and the frictional force when the feeding roller 1 201 and the feeding roller 2 202 rotate relative to the stalks. Squeeze and generate a downward pulling force, so that the originally fluffy tubular straw is axially crushed to form a thinner plate shape, and then use the relative rotation of the first feeding roller 201 and the second feeding roller 202 to drive the driving rod respectively The one end 6 and the driving rod two 7 are connected to the end to make a circular motion, so that the cutting tool rest one 501 and the cutting knife rest two 502 connected to the other end of the driving rod one 6 and the driving rod two 7 follow the slide block one and the slide block two The guide rods axially move toward each other or reversely, thereby driving the cutting blade 1 503 and the cutting blade 2 504 fixed on the cutting blade frame 1 501 and the cutting blade frame 2 502 to move back and forth toward each other or in the opposite direction, thereby realizing the process of pressing into thin plates. The stalks are radially cut into uniform segments to realize the preliminary crushing of the stalks. The primary crushed straws fall into the straw crushing and crushing mechanism 3 along the feeding space between the lower ends of the two guide plates 8 for repeated blows. Collision realizes further crushing. At the same time, gravity hammer 1 9 and gravity hammer 2 11 use their own gravity and the collision force of cutting blade frame 1 501 and cutting blade frame 2 502 to move back and forth in opposite directions or reversely to realize rotation with material guide plate 8 The connected point is rotated, so that the sieve plate 305 is hammered repeatedly, so that the sieve plate 305 vibrates continuously, so that the straw particles on the sieve plate 305 are quickly discharged from the sieve holes into the lower discharge hopper 401, and the straw particles in the discharge hopper 401 The particles enter directly through the discharge pipe 403 and are transported to the designated position by the screw conveyor 404 .

Claims (8)

1. The utility model provides a straw pulverizer, includes organism (1), be equipped with straw feeding mechanism (2), straw crushing and smashing rubbing crusher structure (3) and smash row material mechanism (4), its characterized in that in proper order in organism (1): still be equipped with straw cutting mechanism (5) between straw feeding mechanism (2) and the crushing mechanism of straw (3), straw feeding mechanism (2) are including parallel arrangement and relative rotatory feed roller (201) and feed roller two (202), feed roller (201) and feed roller two (202) all rotate with organism (1) and are connected, straw cutting mechanism (5) are including reciprocal relative or cutting knife rest (501) and cutting knife rest two (502) of motion in opposite directions, be equipped with cutting blade (503) and cutting blade two (504) on cutting knife rest (501) and the cutting knife rest two (502) respectively, feed roller (201) and feed roller two (202) are connected with cutting knife rest (501) and cutting knife rest two (502) through actuating lever (6) and actuating lever two (7) respectively.

2. The straw pulverizer as claimed in claim 1, wherein: the lower part of cutting knife rest (501) and cutting knife rest (502) is equipped with guide bar (505) perpendicular to the axis of feeding roller (201) and feeding roller (202), cutting knife rest (501) and cutting knife rest (502) are respectively through slider (506) and slider (507) and guide bar (505) axial sliding connection, be equipped with drive shaft (508) and drive shaft (509) on feeding roller (201) and feeding roller (202) terminal surface respectively, the upper end of drive rod (6) and drive rod (7) rotates with drive shaft (508) and drive shaft (509) respectively and is connected, be equipped with drive shaft three (510) and drive shaft four (511) on cutting knife rest (501) and cutting knife rest (502) respectively, the lower extreme of drive rod (6) and drive rod two (7) is equipped with drive shaft three (510) and drive shaft four (511) rotation connection's waist type slot hole (512) respectively.

3. The straw pulverizer of claim 2, wherein: the straw cutting machine is characterized in that material guide plates (8) are obliquely arranged at positions, below the straw cutting mechanism (5), of two sides of the machine body (1) respectively, the material guide plates (8) are arranged along the axis direction parallel to the first feeding roller (201) and the second feeding roller (202), the upper ends of the material guide plates (8) are fixedly connected with the side wall of the machine body (1), the lower ends of the material guide plates (8) are located below guide rods (505), two ends of the guide rods (505) are fixed on the two material guide plates (8) respectively, and feeding spaces are arranged between the lower ends of the material guide plates (8).

4. The straw pulverizer as claimed in claim 1, wherein: straw crushing mechanism (3) are including center pin (301) and hammer leaf (302), the both ends of center pin (301) are rotated with organism (1) relative both sides wall respectively and are connected, the one end and the driving motor (303) of center pin (301) are connected, center pin (301) are fixed along the equidistant hammer leaf dish (304) that are equipped with a plurality of and center pin (301) coaxial along axis direction, and evenly distributed is fixed with a plurality of on the circumference of each hammer leaf dish (304) hammer leaf (302), hammer leaf (302) below sets up sieve (305) in addition, the bottom of sieve (305) is half cylinder.

5. A straw shredder according to claim 3 or claim 4, characterised in that: the two ends of the sieve plate (305) extend upwards, one side, close to each other, of each sieve plate is bent, and then the two ends of each sieve plate (305) are hinged to the lower ends of the material guide plates (8) on the two sides, a gravity hammer I (9) and a gravity hammer II (11) are arranged between the upper end of the sieve plate (305) and the material guide plates (8) on the two sides respectively after the upper end of the sieve plate (305) is bent, the gravity hammer I (9) and the gravity hammer II (11) are fixed to the lower ends of a hammer rod I (10) and a hammer rod II (12) respectively, the upper ends of the hammer rod I (10) and the hammer rod II (12) penetrate through the material guide plates (8) on the two sides respectively and extend upwards to be higher than the cutting knife rest I (501) and the cutting knife rest II (502), and the middle parts of the hammer rod I (10) and the hammer rod II (12) are rotatably connected with the material guide plates (8) on the two sides respectively.

6. The straw pulverizer as claimed in claim 5, wherein: one end of the central shaft (301) is provided with a first belt wheel (13), the first belt wheel (13) is synchronously connected with a second belt wheel (15) on the first feeding roller (201) or the second feeding roller (202) through a first synchronous belt (14), the same end of the first feeding roller (201) or the second feeding roller (202) is respectively provided with a first gear (16) and a second gear (17) which are meshed with each other, and the other end of the first feeding roller (201) or the second feeding roller (202) is connected with the other end of the central shaft (301) through a second synchronous belt (18).

7. The straw pulverizer as claimed in claim 1, wherein: the feeding roller I (201) and the feeding roller II (202) are elastic rubber rollers, the surfaces of the feeding roller I (201) and the feeding roller II (202) are provided with convex patterns, and the circumferences of the sections of the feeding roller I (201) and the feeding roller II (202) are tangent.

8. The straw pulverizer as claimed in claim 1, wherein: smash row material mechanism (4) including hopper-shaped play hopper (401) that are located organism (1) bottom, the bottom of going out hopper (401) is equipped with bin outlet (402), bin outlet (402) are connected with the pan feeding mouth of screw conveyer (404) through discharging pipe (403).

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