CN111247965B

CN111247965B - Straw smashing device with dredging function

Info

Publication number: CN111247965B
Application number: CN202010212495.XA
Authority: CN
Inventors: 平步青
Original assignee: Friends Of Life Ningxia Biotechnology Co ltd
Current assignee: Tai'an Fuda Agricultural Technology Co.,Ltd.
Priority date: 2020-03-24
Filing date: 2020-03-24
Publication date: 2021-10-26
Anticipated expiration: 2040-03-24
Also published as: CN111247965A

Abstract

The invention relates to a straw crushing device with dredging function, which comprises a base, a controller, a material conveying pipe, a crushing pipe, a compression pipe, a material inlet pipe and a transmission pipe, wherein the material conveying pipe is internally provided with a material conveying mechanism, the compression pipe is internally provided with a compression mechanism, the crushing pipe is internally provided with a crushing mechanism, the transmission pipe is internally provided with a transmission mechanism, the transmission mechanism comprises a lifting component and a transmission block, the compression mechanism comprises a driving component, a driving plate, a second motor, a frame, a third motor, a bearing and a first crushing roller, the straw crushing device with the dredging function is convenient for conveying straws stuffed in the material inlet pipe into the crushing pipe through the transmission mechanism and the material conveying mechanism, and prevents people from contacting with the crushing mechanism, thereby ensuring the construction safety of operators, in addition, the straws can be compressed by using the compression mechanism, are convenient for crushing by using the first crushing roller while passing through the crushing mechanism, strengthen crushing effect, further improved the practicality of this equipment.

Description

Straw smashing device with dredging function

Technical Field

The invention relates to the field of agricultural equipment, in particular to a straw smashing device with a dredging function.

Background

The straw crusher can crush corn stalks, straws, peanut skin, bean stalks, firewood and other combustible crop fertilizer stalks. The equipment is mainly used for chopping and processing straws and plant straws with branch diameters of less than 5 cm, and can also be used for chopping and processing crop straws and pastures, so that the crop straws are prevented from burning in white, the environment is well protected, and renewable energy sources are effectively developed.

In order to facilitate feeding, a feeding hole of an existing straw pulverizer is usually arranged above or on the side face of the machine, so that the safety and reliability of the existing straw pulverizer are greatly reduced, some hard objects are easy to pop out from the feeding hole to hurt people during operation of equipment, and when long-hair workers stand beside the machine, hairs are easy to be drawn into the machine to cause safety accidents, so that the machine is dredged in order to avoid blocking of the materials inside the machine, the wood stick is usually used for assisting feeding, but in this way, the operators can also carelessly draw arms into the machine, and on the basis of the reasons and the phenomena, the safety, reliability and practicability of the existing straw pulverizer are greatly reduced.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the straw crushing device with the dredging function is provided.

The technical scheme adopted by the invention for solving the technical problems is as follows: a straw smashing device with a dredging function comprises a base, a controller, a conveying pipe, a smashing pipe, a compression pipe, a feeding pipe and a transmission pipe, wherein the transmission pipe, the smashing pipe and the compression pipe are vertically arranged, the feeding pipe and the conveying pipe are horizontally arranged, the transmission pipe is fixed above the base, the controller is fixed on the transmission pipe, a PLC is arranged in the controller, the top end of the transmission pipe is communicated with the center of the conveying pipe, the compression pipe and the smashing pipe are respectively fixed above and below one end of the conveying pipe, the compression pipe and the smashing pipe are communicated with the conveying pipe, the feeding pipe is communicated with one side, far away from the smashing pipe, of the upper portion of the transmission pipe, a conveying mechanism is arranged in the conveying pipe, a compression mechanism is arranged in the compression pipe, a smashing mechanism is arranged in the smashing pipe, and a transmission mechanism is arranged in the transmission pipe;

the conveying mechanism comprises a lifting assembly and a conveying block, the cross section of the conveying pipe along the horizontal direction is square, the conveying block is matched with the conveying pipe, a notch is formed below the conveying block, the lifting assembly comprises a first motor, a screw rod and a sleeve, the first motor is fixed at the bottom in the conveying pipe, the first motor is electrically connected with the PLC, the first motor is in transmission connection with the bottom end of the screw rod, the sleeve is sleeved at the top end of the screw rod, a thread matched with the screw rod is arranged at the joint of the sleeve and the screw rod, and the top end of the sleeve is fixed at the bottom in the notch;

the compressing mechanism sequentially comprises a driving assembly, a driving plate, a second motor, a frame, a third motor, a bearing and a first crushing roller from top to bottom, the driving assembly is located at the top inside the compressing pipe, the driving assembly is connected with the driving plate in a transmission mode, the second motor is fixed below the driving plate, the frame is U-shaped, a U-shaped opening of the frame faces downwards, the second motor is connected with the frame in a transmission mode, the third motor and the bearing are fixed at two ends of the frame respectively, the first crushing roller is sleeved on an output shaft of the third motor, one end, far away from the third motor, of an output shaft of the third motor is arranged inside the bearing, a plurality of first blades are arranged on the side face of the first crushing roller, and the second motor and the third motor are all electrically connected with a PLC.

As preferred, in order to facilitate pushing the straw on the conveying block into the crushing pipe, the conveying mechanism comprises an air pump, an air cylinder, an air rod and a push plate, the air cylinder is horizontally arranged, the air cylinder is fixed on the inner wall of one side, away from the crushing pipe, of the conveying pipe, the air pump is fixed in the conveying pipe, the air pump is electrically connected with the PLC, the air pump is communicated with the air cylinder, one end of the air rod is arranged in the air cylinder, and the other end of the air rod is fixedly connected with the push plate.

Preferably, in order to crush the straws, the crushing mechanism comprises two crushing assemblies, each crushing assembly comprises a fourth motor and a second crushing roller, the fourth motor is fixed on the crushing pipe and electrically connected with the PLC, the second crushing roller is arranged in the crushing pipe and fixedly connected with an output shaft of the fourth motor, and a plurality of second blades are arranged on the side surface of the second crushing roller.

Preferably, a protective net is arranged at the bottom end in the crushing pipe for protecting the safety of surrounding personnel.

Preferably, in order to drive the driving plate to move up and down, the driving assembly comprises a fifth motor, a driving plate, a driving rod, a driving frame and two connecting rods, the fifth motor is fixed in the compression pipe and electrically connected with the PLC, the fifth motor is in transmission connection with the driving plate, the driving rod is fixed on the driving plate, the driving rod is located on the inner side of the driving frame, and the driving frame is fixedly connected with the driving plate through the connecting rods.

Preferably, in order to fix the moving direction of the driving plate, the driving assembly further comprises two fixing rings, the fixing rings are fixed on the inner wall of the compression pipe, and the fixing rings are sleeved on the connecting rod.

Preferably, in order to secure the driving force of the fifth motor, the fifth motor is a dc servo motor.

Preferably, in order to ensure the stable rotation of the frame, two sides above the frame are provided with sliding blocks, an annular groove is arranged below the driving plate, the sliding blocks are matched with the annular groove, and the sliding blocks are in sliding connection with the annular groove.

Preferably, in order to further ensure the stable rotation of the frame, the annular groove is a dovetail groove.

Preferably, in order to precisely control the moving position of the transfer block, a distance sensor is provided at the bottom inside the recess of the transfer block, and the distance sensor is electrically connected to the PLC.

The straw crushing device with the dredging function has the advantages that the straw filled in the feeding pipe can be conveniently conveyed into the crushing pipe through the conveying mechanism and the material conveying mechanism, people are prevented from contacting with the crushing mechanism, the construction safety of operators is guaranteed, the straw can be compressed through the compression mechanism, the straw can be conveniently crushed through the crushing mechanism, the crushing effect is enhanced, and the practicability of the device is further improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural diagram of a straw crushing device with dredging function of the invention;

FIG. 2 is a sectional view of the straw chopper of the present invention;

FIG. 3 is a schematic structural diagram of a compressing mechanism of the straw crushing device with dredging function of the invention;

FIG. 4 is a schematic structural diagram of a conveying mechanism of the straw crushing device with dredging function of the invention;

in the figure: 1. the crushing device comprises a base, a controller, a material conveying pipe, a crushing pipe, a compression pipe, a material feeding pipe, a material conveying pipe, a transmission block, a first motor, a screw rod, a sleeve, a driving plate, a second motor, a frame, a third motor, a bearing, a first crushing roller, a second crushing roller, a bearing, a driving plate, a driving rod, a driving frame, a connecting rod, a fixing ring, a sliding block, a groove, a distance sensor, a first motor, a second motor, a driving plate, a driving rod, a driving plate, a driving rod, a driving ring, a sliding block, a groove and a distance sensor, wherein the material feeding pipe is 6, the material feeding pipe is 7, the transmission pipe is 8, the transmission block is 8, the first motor is 9, the screw rod, the sleeve is 11, the sleeve, the driving plate is 12, the driving plate, the frame, the second motor is 14, the second crushing roller, the cylinder is 15, the cylinder is 15, the air cylinder is 20, the air cylinder is 20, the air cylinder, the air rod, the protecting net, the fixing ring, and the fixing ring, and the fixing ring are 24, and the fixing ring are arranged on the fixing ring, and the fixing ring are arranged on the fixing ring, and the fixing ring are arranged on the fixing ring, and the fixing ring, the fixing.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1-2, a straw smashing device with dredging function comprises a base 1, a controller 2, a material conveying pipe 3, a smashing pipe 4, a compression pipe 5, a material inlet pipe 4 and a transmission pipe 7, wherein the transmission pipe 7, the smashing pipe 4 and the compression pipe 5 are vertically arranged, the material inlet pipe 6 and the material conveying pipe 3 are horizontally arranged, the transmission pipe 7 is fixed above the base 1, the controller 2 is fixed on the transmission pipe 7, a PLC is arranged in the controller 2, the top end of the transmission pipe 7 is communicated with the center of the material conveying pipe 3, the compression pipe 5 and the smashing pipe 4 are respectively fixed above and below one end of the material conveying pipe 3, the compression pipe 5 and the smashing pipe 4 are communicated with the material conveying pipe 3, the material inlet pipe 6 is communicated with one side of the upper portion of the transmission pipe 7, which is far away from the smashing pipe 4, a material conveying mechanism is arranged in the material conveying pipe 3, and a compression mechanism is arranged in the compression pipe 5, a crushing mechanism is arranged in the crushing pipe 4, and a transmission mechanism is arranged in the transmission pipe 7;

the PLC, i.e. the programmable logic controller 2, which employs a programmable memory for storing therein a program for executing instructions for user-oriented operations such as logic operation, sequence control, timing, counting, and arithmetic operation, and controls various types of machines or production processes through digital or analog input/output, is essentially a computer dedicated for industrial control, has a hardware structure substantially the same as that of a microcomputer, and is generally used for data processing and instruction reception and output for realizing central control.

When a user uses the straw smashing device, straws with smashing are stuffed into a transmission pipe 7 through a feeding pipe 6, then the device is operated to operate through a controller 2, a PLC controls a transmission mechanism in the transmission pipe 7 to start, the straws are transmitted to a material transmission pipe 3, then the material transmission mechanism in the material transmission pipe 3 is started, the straws are pushed to the upper part of the smashing pipe 4, in order to avoid the situation that the straws are piled up above the smashing pipe 4 and influence the smashing efficiency, at the moment, a compression mechanism in a compression pipe 5 is started to compress the straws downwards, so that after the straws are smashed by the smashing mechanism, the smashed materials are discharged from the lower part of the smashing pipe 4, as the smashing process is carried out in the smashing pipe 4, the smashed and ejected hard objects can only move in the smashing pipe 4 and can not eject out from the feeding pipe 6, and the hairs of people can not only enter the feeding pipe 6 and can not contact with the smashing mechanism in the smashing pipe 4, thereby ensuring the safe operation of straw crushing and improving the safety and reliability of the equipment.

As shown in fig. 4, the transmission mechanism includes a lifting assembly and a transmission block 8, the cross section of the transmission pipe 7 along the horizontal direction is square, the transmission block 8 is matched with the transmission pipe 7, a notch is arranged below the transmission block 8, the lifting assembly includes a first motor 9, a screw rod 10 and a sleeve 11, the first motor 9 is fixed at the bottom inside the transmission pipe 7, the first motor 9 is electrically connected with the PLC, the first motor 9 is in transmission connection with the bottom end of the screw rod 10, the sleeve 11 is sleeved on the top end of the screw rod 10, a screw thread matched with the screw rod 10 is arranged at the connection part of the sleeve 11 and the screw rod 10, and the top end of the sleeve 11 is fixed at the bottom inside the notch;

when the transmission mechanism operates, the PLC sends an instruction, the first motor 9 in the lifting assembly is controlled to be started, the lead screw 10 is driven to rotate, the lead screw 10 acts on the sleeve 11 through threads, the sleeve 11 drives the transmission block 8 to move, and the transmission pipe 7 is square in cross section along the horizontal direction, so that the transmission block 8 and the sleeve 11 are prevented from rotating along with the rotation of the lead screw 10, the sleeve 11 is further driven to lift along the axis of the lead screw 10, and the transmission block 8 is driven to move up and down. Before the equipment starts, it is rotatory to drive lead screw 10 through first motor 9, make transport block 8 downstream to the below of inlet pipe 6, people fill in the inside back of transmission pipe 7 with the straw through inlet pipe 6, through controller 2 starting equipment, lead screw 10 antiport, drive sleeve pipe 11 and transport block 8 rebound, make the upper surface of transport block 8 remove to the same position with the 3 bottoms of conveying pipeline, make things convenient for the top that rubbing crusher constructs is pushed to the straw on transport block 8 of the defeated material mechanism in the conveying pipeline 3.

As shown in fig. 4, the compressing mechanism includes, in order from top to bottom, a driving assembly, a driving plate 12, a second motor 13, a frame 14, a third motor 15, a bearing 16, and a first crushing roller 17, the drive assembly is located at the top inside the compression tube 5, and is in driving connection with a drive plate 12, the second motor 13 is fixed below the driving plate 12, the frame 14 has a U-shape, the U-shaped opening of the frame 14 faces downwards, the second motor 13 is in transmission connection with the frame 14, the third motor 15 and the bearing 16 are respectively fixed at two ends of the frame 14, the first crushing roller 17 is sleeved on the output shaft of the third motor 15, one end of the output shaft of the third motor 15 far away from the third motor 15 is arranged in the bearing 16, the side of the first crushing roller 17 is provided with a plurality of first blades, and the second motor 13 and the third motor 15 are both electrically connected with the PLC.

In the compression mechanism, the driving component can drive the driving plate 12 to move up and down, the height position of the driving plate 12 is adjusted, when the straw is compressed, the driving component drives the driving plate 12 to move downwards, then the first crushing roller 17 and the first blade on the surface of the first crushing roller are in contact with the straw, the straw is compressed downwards, the straw is in contact with the crushing mechanism, meanwhile, in order to enhance the crushing effect, the third motor 15 at one end below the PLC control frame 14 is started to drive the first crushing roller 17 and the first blade on the periphery of the first crushing roller 17 to rotate, the straw is crushed, when the first crushing roller 17 rotates, the PLC controls the second motor 13 to be started, the frame 14 drives the first crushing roller 17 to rotate along the axis of the output shaft of the third motor 15, the straw is further compressed, the straw is crushed in an enhanced mode, and the dredging of the crushing pipe 4 is guaranteed.

As shown in fig. 2, the feeding mechanism comprises an air pump 18, an air cylinder 19, an air rod 20 and a push plate 21, wherein the air cylinder 19 is horizontally arranged, the air cylinder 19 is fixed on the inner wall of one side, far away from the crushing pipe 4, of the feeding pipe 3, the air pump 18 is fixed in the feeding pipe 3, the air pump 18 is electrically connected with the PLC, the air pump 18 is communicated with the air cylinder 19, one end of the air rod 20 is arranged in the air cylinder 19, and the other end of the air rod 20 is fixedly connected with the push plate 21.

PLC control air pump 18 starts, and the inside air quantity of adjustable cylinder 19, and then drive gas pole 20 and carry out the translation, realizes the removal of push pedal 21 through the removal of gas pole 20, and after conveying block 8 drove the straw and rises to conveying pipeline 3 inside, push pedal 21 kept away from cylinder 19 and removes, pushes the straw of conveying block 8 top and smashes the top of pipe 4, is convenient for carry out shredding.

Preferably, in order to crush the straws, the crushing mechanism comprises two crushing assemblies, each crushing assembly comprises a fourth motor 22 and a second crushing roller 23, the fourth motor 22 is fixed on the crushing pipe 4, the fourth motor 22 is electrically connected with the PLC, the second crushing rollers 23 are arranged in the crushing pipe 4, the second crushing rollers 23 are fixedly connected with an output shaft of the fourth motor 22, and a plurality of second blades are arranged on the side surfaces of the second crushing rollers 23. The PLC controls the fourth motor 22 to be started, the second crushing roller 23 is driven to rotate inside the crushing pipe 4, the second blade on the surface of the second crushing roller 23 is made to contact with the straw, and the straw is cut and crushed in the rotating process.

Preferably, a protective net 24 is provided at the bottom end of the crushing pipe 4 for protecting the safety of the surrounding personnel. The four limbs of people can be prevented from entering the crushing pipe 4 through the protective net 24, and the safe construction of equipment is guaranteed.

As shown in fig. 3, the driving assembly includes a fifth motor 25, a driving plate 26, a driving rod 27, a driving frame 28 and two connecting rods 29, the fifth motor 25 is fixed in the compression pipe 5, the fifth motor 25 is electrically connected to the PLC, the fifth motor 25 is in transmission connection with the driving plate 26, the driving rod 27 is fixed on the driving plate 26, the driving rod 27 is located at the inner side of the driving frame 28, and the driving frame 28 is fixedly connected to the driving plate 12 through the connecting rods 29.

The PLC controls the fifth motor 25 to start, so as to drive the driving disc 26 to rotate, the driving disc 26 drives the driving rod 27 on the surface to rotate, so as to change the height position of the driving disc, the driving rod 27 acts on the driving frame 28, so that the driving frame 28 moves up and down, and the driving plate 12 can be driven to move through the connecting rod 29.

Preferably, in order to fix the moving direction of the driving plate 12, the driving assembly further comprises two fixing rings 30, the fixing rings 30 are fixed on the inner wall of the compression pipe 5, and the fixing rings 30 are sleeved on the connecting rod 29. With the fixing ring 30 fixed inside the compression pipe 5, the moving direction of the link 29 can be fixed, and the drive plate 12 and the link 29 can be stably moved along the axial direction of the fixing ring 30 as the drive plate 26 rotates the drive rod 27.

Preferably, the fifth motor 25 is a dc servo motor in order to ensure the driving force of the fifth motor 25 by utilizing the characteristic that the driving force of the dc servo motor is strong.

Preferably, in order to ensure the stable rotation of the frame 14, two sides above the frame 14 are provided with sliding blocks 31, an annular groove 32 is arranged below the driving plate 12, the sliding blocks 31 are matched with the annular groove 32, and the sliding blocks 31 are slidably connected with the annular groove 32. The rotation track of the sliding block 31 is fixed by the annular groove 32 fixed below the driving plate 12, and the sliding block 31 is fixedly connected with the frame 14, so that the frame 14 keeps rotating smoothly.

Preferably, to further ensure stable rotation of the frame 14, the annular grooves 32 are dovetail grooves. Because the annular groove 32 is a dovetail groove, the sliding block 31 cannot be separated from the annular groove 32 in the rotating process, and the stable rotation of the frame 14 is further ensured.

Preferably, in order to precisely control the moving position of the transfer block 8, a distance sensor 33 is provided at the bottom of the recess of the transfer block 8, and the distance sensor 33 is electrically connected to the PLC. Utilize distance sensor 33 to detect the distance of transmission piece 8 and the bottom in smashing pipe 4 to give PLC with distance data transfer, PLC can confirm the position of transmission piece 8 according to distance data, when removing through lifting unit control transmission piece 8, through the position of real-time supervision transmission piece 8, the accurate control transmission piece 8's of being convenient for high position.

In the using process of the straw smashing device, a user packs straws into a transmission pipe 7 through a feeding pipe 6 to enable the straws to fall above the transmission block 8, a rear lifting assembly drives the transmission block 8 to move upwards to enable the straws to enter a material conveying pipe 3, the straws are pushed to the upper side of the smashing pipe 4 through a push plate 21, then a driving assembly drives a driving plate 12 to move downwards to enable a first smashing roller 17 to be in contact with the straws, the straws are pressed downwards between two second smashing rollers 23 to be smashed, the first smashing roller 17 is driven to rotate through a second motor 13 and a third motor 15, the smashing effect is enhanced while the straws are compressed, the straws are prevented from being clamped on the upper portion of the smashing pipe 4, the feeding pipe 6 is prevented from being in direct communication contact with the smashing pipe 4 through the transmission pipe 7 and the material conveying pipe 3 in the operation process of the device, and the smashing is prevented from being carried out, the human body part enters the crushing pipe 4 to contact with the crushing mechanism, crushed objects generated by crushing can be prevented from being discharged from the feeding pipe 6, the safe operation of the crushing operation is ensured, and the practicability of the equipment is improved.

Compared with the prior art, this straw reducing mechanism with mediation function is convenient for carry the straw that inlet pipe 6 was filled in to crushing intraductal 4 through transport mechanism and defeated material mechanism to prevent people and rubbing crusher structure contact, guarantee operating personnel's construction safety, moreover, utilize compressing mechanism to compress the straw, when making things convenient for the straw to pass through rubbing crusher structure, utilize first crushing roller 17 to smash, strengthen crushing effect, further improved the practicality of this equipment.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The straw smashing device with the dredging function is characterized by comprising a base (1), a controller (2), a conveying pipe (3), a smashing pipe (4), a compression pipe (5), an inlet pipe (6) and a transmission pipe (7), wherein the transmission pipe (7), the smashing pipe (4) and the compression pipe (5) are vertically arranged, the inlet pipe (6) and the conveying pipe (3) are horizontally arranged, the transmission pipe (7) is fixed above the base (1), the controller (2) is fixed on the transmission pipe (7), a PLC is arranged in the controller (2), the top end of the transmission pipe (7) is communicated with the center of the conveying pipe (3), the compression pipe (5) and the smashing pipe (4) are respectively fixed above and below one end of the conveying pipe (3), and the compression pipe (5) and the smashing pipe (4) are communicated with the conveying pipe (3), the feeding pipe (6) is communicated with one side, far away from the crushing pipe (4), of the upper part of the transmission pipe (7), a material conveying mechanism is arranged in the material conveying pipe (3), a compression mechanism is arranged in the compression pipe (5), a crushing mechanism is arranged in the crushing pipe (4), and a transmission mechanism is arranged in the transmission pipe (7);

the transmission mechanism comprises a lifting assembly and a transmission block (8), the cross section of the transmission pipe (7) along the horizontal direction is square, the transmission block (8) is matched with the transmission pipe (7), a notch is formed below the transmission block (8), the lifting assembly comprises a first motor (9), a screw rod (10) and a sleeve (11), the first motor (9) is fixed at the bottom inside the transmission pipe (7), the first motor (9) is electrically connected with a PLC (programmable logic controller), the first motor (9) is in transmission connection with the bottom end of the screw rod (10), the sleeve (11) is sleeved at the top end of the screw rod (10), a thread matched with the screw rod (10) is arranged at the connection part of the sleeve (11) and the screw rod (10), and the top end of the sleeve (11) is fixed at the bottom inside the notch;

the compression mechanism sequentially comprises a driving assembly, a driving plate (12), a second motor (13), a frame (14), a third motor (15), a bearing (16) and a first crushing roller (17) from top to bottom, the driving assembly is positioned at the top of a compression pipe (5), the driving assembly is in transmission connection with the driving plate (12), the second motor (13) is fixed below the driving plate (12), the frame (14) is U-shaped, the U-shaped opening of the frame (14) is downward, the second motor (13) is in transmission connection with the frame (14), the third motor (15) and the bearing (16) are respectively fixed at two ends of the frame (14), the first crushing roller (17) is sleeved on an output shaft of the third motor (15), one end of the output shaft of the third motor (15), which is far away from the third motor (15), is arranged in the bearing (16), the side of the first crushing roller (17) is provided with a plurality of first blades, and the second motor (13) and the third motor (15) are electrically connected with the PLC.

2. The straw smashing device with the dredging function according to claim 1, wherein the conveying mechanism comprises an air pump (18), an air cylinder (19), an air rod (20) and a push plate (21), the air cylinder (19) is horizontally arranged, the air cylinder (19) is fixed on the inner wall of one side, away from the smashing pipe (4), of the conveying pipe (3), the air pump (18) is fixed in the conveying pipe (3), the air pump (18) is electrically connected with the PLC, the air pump (18) is communicated with the air cylinder (19), one end of the air rod (20) is arranged in the air cylinder (19), and the other end of the air rod (20) is fixedly connected with the push plate (21).

3. The straw crushing device with the dredging function as claimed in claim 1, wherein the crushing mechanism comprises two crushing assemblies, the crushing assemblies comprise a fourth motor (22) and a second crushing roller (23), the fourth motor (22) is fixed on the crushing pipe (4), the fourth motor (22) is electrically connected with the PLC, the second crushing roller (23) is arranged in the crushing pipe (4), the second crushing roller (23) is fixedly connected with an output shaft of the fourth motor (22), and a plurality of second blades are arranged on the side surface of the second crushing roller (23).

4. The straw crushing device with the function of dredging as claimed in claim 1, wherein the bottom end in the crushing pipe (4) is provided with a protective screen (24).

5. The straw smashing device with the dredging function according to claim 1, wherein the driving assembly comprises a fifth motor (25), a driving disc (26), a driving rod (27), a driving frame (28) and two connecting rods (29), the fifth motor (25) is fixed in the compression pipe (5), the fifth motor (25) is electrically connected with the PLC, the fifth motor (25) is in transmission connection with the driving disc (26), the driving rod (27) is fixed on the driving disc (26), the driving rod (27) is located on the inner side of the driving frame (28), and the driving frame (28) is fixedly connected with the driving plate (12) through the connecting rods (29).

6. The straw crushing device with the function of dredging as claimed in claim 5, wherein the driving assembly further comprises two fixing rings (30), the fixing rings (30) are fixed on the inner wall of the compression pipe (5), and the fixing rings (30) are sleeved on the connecting rod (29).

7. The straw crushing device with the dredging function as claimed in claim 5, wherein the fifth motor (25) is a DC servo motor.

8. The straw crushing device with the dredging function as claimed in claim 1, wherein sliding blocks (31) are arranged on two sides above the frame (14), an annular groove (32) is arranged below the driving plate (12), the sliding blocks (31) are matched with the annular groove (32), and the sliding blocks (31) are in sliding connection with the annular groove (32).

9. The straw crushing device with the function of dredging as claimed in claim 8, wherein the annular groove (32) is a dovetail groove.

10. The straw crushing device with the dredging function as claimed in claim 1, wherein a distance sensor (33) is arranged at the bottom in the notch of the transmission block (8), and the distance sensor (33) is electrically connected with a PLC.