CN106723227B - Straw puffed feed processing center - Google Patents

Abstract

The utility model provides a popped feed processing center of straw, includes pan feeding subassembly, popped subassembly and ejection of compact subassembly, and its technical essential is: the feeding assembly comprises a primary chopping device, a feeding channel assembly, a watering device and a secondary chopping device; the puffing component comprises a hopper, an anti-blocking device and a puffing device; the puffing device comprises a puffing shell, a screw rod, a driving machine, a puffing screw, a puffing head and a charging barrel, the directions of the puffing screws on two sides are opposite, and a puffing cavity is formed between the puffing shell and the puffing screw; the discharging component comprises a discharging channel component, a bacterium liquid spraying device and a packing device. Fundamentally solves the single function of current straw treatment facility and the design that machining efficiency is low, starts from the straw raw materials, and the feed packing is gone up to, adopts integrated equipment to accomplish the feed processing, and especially machining center reduces floating dust, processing equipment putty phenomenon for improving machining efficiency, improving the field processing environment, reduces popped equipment loss scheduling problem.

Description

Straw puffed feed processing center

Technical Field

The invention relates to feed product processing equipment, in particular to a straw puffed feed processing center. The straw cutting and puffing machine is mainly suitable for integrating functions of straw cutting, puffing, spraying, blocking prevention, packaging and the like.

Background

Crop straws are byproducts in the production of grain crops and economic crops, contain rich trace elements such as nitrogen, phosphorus, potassium and the like, are valuable resources which can be developed and comprehensively utilized, have low development and utilization rate of the straws in China, are generally burnt on site or are generally used for livestock breeding after being processed and treated by straw feed processing machines, at present, the processing technologies of the processing machines such as a straw bulking machine, a kneading machine, a briquetting machine, a bundling machine, a granulator and the like are relatively single and are not suitable for a commercial mode, if reasonable analysis and treatment are carried out on the straw processing technologies, a straw industry suitable for integrated processing, namely a set of processing modes is established, so that the technology and the economy of the straw industry are suitable for commercial development, and the optimal matching relation between the optimal structural parameter and the working parameter of the straw bulked feed processing center is designed, so that the straw utilization rate is improved and convenience is provided for the development of the livestock breeding industry.

The invention discloses a straw processing device, which comprises a base, a motor, an extrusion screw, a feeding frame, a connecting disc, a cutter, a feeding cylinder, an extruding cylinder and a high-pressure cylinder, wherein the feeding cylinder, the extruding cylinder and the high-pressure cylinder are sequentially connected, the feeding cylinder, the connecting disc and the cutter are connected to the base through a supporting frame, the diameter of the high-pressure cylinder is smaller than that of the extruding cylinder, the straw passes through the high-pressure cylinder, the straw moves towards the extruding cylinder from the feeding cylinder, the straw is cut by the cutter at the connecting disc between the feeding cylinder and the extruding cylinder, then the cut straw enters the extruding cylinder, the straw is extruded for the first time in the extruding cylinder and moves towards the high-pressure cylinder, the straw is cut again by the cutter at the connecting disc between the extruding cylinder and the high-pressure cylinder, then enters the high-pressure cylinder, and the material is extruded from the high-pressure cylinder after being puffed. Although the technical scheme can process the straws, the following defects still exist: firstly, because of the adoption of a totally-enclosed processing device, the problem of material blockage of equipment cannot be solved. Secondly, the processing equipment is processed while being cut, so that the equipment loss degree is seriously influenced, and the service life of the equipment is not prolonged. Thirdly, the equipment process is not complete, only the chopping and puffing treatment is carried out, subsequent processing procedures are not carried out, and the equipment is not suitable for automatic production, so that the development of the straw processing center suitable for commercial production can fill up the current market vacancy, and can bring remarkable economic benefits for farmers, thereby having important significance.

Disclosure of Invention

The invention aims to provide a novel straw puffed feed processing center and a production process, so that the overall design and processing are complete, the production efficiency is high, the production cost is reduced, the design mode that the single function and the low processing efficiency of the conventional straw processing equipment are fundamentally solved, the feed processing is completed by adopting integrated equipment from the straw raw material to the feed packing, and particularly, the problems of floating dust reduction, material blockage of the processing equipment, reduction of the loss of the puffed equipment and the like in order to improve the processing efficiency and improve the field processing environment of the processing center are solved, so that the feed processing is integrated and industrialized.

In order to achieve the purpose, the invention provides the following technical scheme: this popped feed processing center of straw includes pan feeding subassembly, popped subassembly and ejection of compact subassembly, and its technical essential is: the feeding assembly comprises a primary chopping and pressing device, a feeding channel assembly arranged at the outlet of the chopping and pressing device, a watering device arranged in the feeding channel assembly and a secondary chopping and pressing device arranged at the outlet of the feeding channel assembly; the puffing assembly comprises a hopper arranged at the outlet of the feeding channel assembly, an anti-blocking device arranged in the hopper and a puffing device arranged at the outlet at the bottom of the hopper; the puffing device comprises puffing shells symmetrically arranged at two sides of the hopper, a screw arranged in the puffing shells, a driver arranged at the input end of the screw, a puffing screw arranged on the screw, puffing heads respectively arranged at discharge ports at two ends of the puffing shells, and a vertically arranged charging barrel arranged at a discharge port of the puffing head, wherein a puffing cavity is formed between the puffing shells and the puffing screw;

the discharging component comprises a discharging channel component arranged at the discharging end of the material cylinder of the puffing device, a bacterium liquid spraying device arranged on the discharging channel component, and a packing device arranged at the outlet end of the discharging channel component.

The anti-blocking device comprises a material stirring shaft and a reverse material stirring blade.

Compared with the prior art, the invention has the following beneficial effects: because the hard characteristic of straw itself, popped in-process easily produces wearing and tearing to popped device, designs twice hand hay cutter and presses, makes the straw before popped, fully rolls it through thick hand hay cutter pressure and thin hand hay cutter pressure processing technology, reduces the wearing and tearing to popped device, improve equipment life. The putty condition generally takes place at the feed inlet, sets up stifled equipment in popped feed inlet department and prevents the putty. The popped spiral opposite direction in popped intracavity both sides produces the equal directional transmission of axial force like this, and the axial force at both ends has effectively been offset to the popped in-process, makes popped process more smooth, has improved machining efficiency. Transmission device sets up fungus liquid sprinkler and watering device, for straw feed processing provides supplementary processing means, and the popped fodder warp baling that adds microbial liquid can deposit two years not rotten, more is favorable to popped fodder industrialization development, satisfies the regional demand of poultry. The straw processing factory is realized, the feeding port and the discharging port are arranged on one side, the processing space is saved, and the economic cost is reduced.

In conclusion, the straw puffed feed processing center system is complete, efficient in work and convenient to operate, and the feed yield can reach 80 t/day.

Drawings

FIG. 1 is a schematic isometric side view of a machining center according to the present invention;

FIG. 2 is a front view of the machining center of the present invention;

FIG. 3 is a schematic front view of a puffing apparatus of the processing center of the present invention;

fig. 4 is a schematic isometric side view of a bulking assembly of the present invention;

FIG. 5 is a schematic view of a pressure relief assembly according to the present invention;

FIG. 6 is a schematic diagram of the operation of the pressure relief assembly of the present invention;

FIG. 7 is a flow chart of a self-learning control method of the present invention;

FIG. 8 is a block diagram of the self-learning control method of the present invention.

Description of the reference numerals:

in FIG. 1: 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 discharging ports;

in fig. 2: an outlet of a chopping device 11, a conveying roller 12, a baffle 13, a driver base 14, a screw driver 15, a base 16, a bracket 17, a transmission chain 18, a feeding barrel 19, a hopper 20, a feeding channel component outlet 21 and a feeding bracket 22;

in fig. 3: 23 anti-blocking device, 24 support base, 25 screw, 26 expansion head discharge port, 27 expansion head, 28 expansion cavity, 29 expansion screw and 30 expansion cavity inlet;

in fig. 4: 4 anti-blocking devices, 15 screw drivers, 18 transmission chains, 20 hoppers, 25 screws, 26 puffing head discharge ports, 28 puffing cavities, 29 puffing screws and 31 adjusting devices.

In fig. 5: 32 vortex fan driving machine, 33 vortex fan, 34 sealing cover, 35 filter screen, 36 main conduit, 37 auxiliary conduit, 38 pressure relief component, 39 filter cloth, 40 main conduit exhaust port, 41 filtrate container and 42 auxiliary conduit exhaust port.

Detailed Description

The present invention will be described in detail below with reference to specific examples with reference to FIGS. 1 to 8. The straw puffed feed processing center comprises a feeding assembly, a puffing assembly and a discharging assembly. Wherein, the pan feeding subassembly is including being equipped with feed inlet 1 once hand hay cutter pressure equipment 2, setting at the feedstock channel subassembly 4 of hand hay cutter pressure equipment ware export 11, the watering device 3 of setting in the feedstock channel subassembly, the setting is at the secondary hand hay cutter pressure equipment 5 of feedstock channel subassembly export 21. The feed channel assembly 4 is a conveying roller with a baffle plate and an upward inclined feed end to discharge end, and the conveying roller is fixed on a horizontal plane through a feed support 22.

The puffing assembly comprises a hopper 20 arranged at the outlet of the feeding channel assembly, an anti-blocking device 23 arranged in the hopper, and a puffing device 6 arranged at the outlet of the bottom of the hopper, wherein the puffing device 6 is limited on a support 17 by being fixed on a bottom supporting seat 24 of a puffing shell, the support 17 is installed on a base 16, and the base 16 is fixed on the horizontal plane. The anti-blocking device 23 comprises a material stirring shaft (not marked in the figure) horizontally arranged in the hopper and a material stirring blade limited on the material stirring shaft, wherein the input end of the material stirring shaft (not marked in the figure) is connected to the screw driver 15.

The popped device is including the popped casing (not mark in the figure) of symmetry setting tube-shape in the hopper both sides, screw rod 25 of setting in popped casing, screw driver 15 through drive chain 18 and screw rod 25's input link up, popped spiral 29 of setting on the screw rod, set up the popped head 27 at popped casing both ends discharge gate respectively, the vertical setting of setting on popped head discharge gate 26 is with feed cylinder 19, the direction of the popped spiral of both sides is opposite, form popped chamber 28 between popped casing and the popped spiral 29, the discharge gate and the popped chamber entry 30 of hopper bottom are linked together, screw driver 15 passes through driver base 14 to be fixed on the horizontal plane.

The discharging component comprises a discharging channel component 7 arranged at the discharging end of the charging barrel of the puffing device, a bacterium liquid spraying device 8 arranged on the discharging channel component, and a packing device 9 arranged at the outlet end of the discharging channel component and provided with a discharging port 10, and the discharging channel component 7 comprises a conveying roller 12 with a baffle 13.

The method comprises the steps of feeding the whole straw into a primary chopping device through a feeding port 1, chopping and extruding the straw, conveying the straw to a secondary chopping device through a feeding channel assembly, sprinkling water to the straw in the straw conveying process through a sprinkling device on the feeding channel assembly to reduce floating dust, then feeding the straw into a secondary fine chopping device, carrying out secondary chopping on the straw to enable the straw to be more finely crushed, reducing abrasion to a puffing device due to physical properties such as straw hardening and the like, driving a reverse stirring blade through a stirring shaft inside an anti-blocking device to enable the feed to smoothly fall into a bilateral symmetrical puffing cavity, enabling the straw to collide and rub with a puffing screw and a cavity wall in the puffing cavity to generate a large amount of heat, enabling the temperature in the puffing cavity to be rapidly increased (to 170 ℃), enabling the puffed straw to be cured, saccharified and spongy, enabling moisture in the straw to be changed into superheated steam in a short time, forming a high-temperature tempering hydrothermal environment, playing roles in curing, promoting cellulose degradation and the like, enabling the puffed straw to be bundled on a straw barrel along two discharging ports of the puffing device, enabling the straw to be fully filled with a straw fermentation feed packaging medium, and enabling the straw to be added into a straw packaging device, and a straw packaging medium, and a straw packaging device, and a straw micro-fermentation biological feed packaging device, and a straw packaging device.

In order to eliminate the air quality of the processing environment improved by the pre-processing dust emission, a dust separating device is further arranged on the feeding hole of the feeding channel, the dust separating device of the straw bulking machine comprises a sealing cover 34, a vortex fan 33 arranged on one side of the sealing cover and a main guide pipe 36 arranged on the other side of the sealing cover, the position of a vortex air outlet is opposite to that of an air inlet of the main guide pipe, and a vortex fan driver 32 is arranged at the input end of the vortex fan. The sealing cover is arranged at a straw feeding port of the bulking machine (not shown in the figure) and is used for sealing treatment, so that dust diffusion can be effectively prevented. A filter screen 35 is arranged between the main duct and the sealing cover, a filter cloth 39 is arranged at the tail end of the main duct, an auxiliary duct 37 is arranged on the main duct, a pressure relief assembly 38 is arranged in the auxiliary duct, and a main duct exhaust port 40 and an auxiliary duct exhaust port 42 are communicated into a filtrate container 41. The pressure relief assembly comprises an overflow valve, a pressure relay and a pressure sensor.

The straw section after preorder processing (this department mainly means the hand hay cutter presses the process) is dropped into from sealed cowling upper portion opening, and the sealed cowling wholly adopts big-end-up's hopper-shaped structure, because the straw itself is loose porous structure, and relative density is less, has certain difficulty when getting into bulking machine auger feed mechanism by the sealed cowling, and the common way can be with advancing the sealed cowling and making rectangular shape structure to the straw material of accessible top pushes down the straw material of bottom, thereby guarantees that the feeding is smooth. However, if the scheme is adopted, the sealing cover has to be made very long, which is not beneficial to the preparation of the whole machine. Compaction equipment may also be added, but manufacturing and maintenance costs are significantly increased. After the funnel structure is adopted, the inclined plane part of the funnel structure can form downward sliding force, bottom materials are pressed downwards by means of dead weight, and the vertical side face of the funnel structure can increase the compaction effect. On one hand, the length of the sealing cover can be shortened, and on the other hand, a compaction mechanism can be omitted, so that the integral structure is simplified, and the operation cost is reduced.

The vortex fan produces the cyclone under the drive of driving source, because dust monomer weight is light, consequently changes the effect at the vortex and follows the vortex motion to make tiny dust peel off from the great straw section surface of volume weight, the vortex then can guarantee the direction that the dust flows, avoids the dust to be unordered disturbance state "in the sealed cowling and flies in disorder", but in the direct main duct that gets into of vortex direction footpath. The filter screen has a certain aperture, which can limit the particle size of the inflowing material, and prevent the straw section with larger volume from entering the filter screen to block the pipeline. The straw sections fall into the bulking machine downwards along the sealing cover under the action of self weight, and the next procedure is carried out. After the dust passes through the filter screen, the dust is led to a filtrate container along a main conduit and is firstly absorbed by filter cloth to finish primary filtration; the finer dust particles pass through the filter cloth and are introduced into the filtrate through the exhaust port 40 to be absorbed by the filtrate, thereby completing the secondary filtration. Furthermore, the filter cloth also plays a role in scattering bubbles in the filtrate, and avoids the phenomenon that overlarge bubbles are mixed with dust and introduced into the atmosphere. Finally, the clean gas after the secondary filtration is discharged to the atmosphere.

The filter cloth is a porous structure, dust on the filter cloth is accumulated continuously along with the production, and if the filter cloth is not replaced in time, the exhaust port 40 of the main duct can be blocked at a certain moment. At this time, in order to avoid the blockage of the pipeline system and realize the unloading, the auxiliary conduit 37 is arranged beside the main conduit, and even if the main conduit 36 is blocked, the vortex air flow flows along the auxiliary conduit 37 and finally is introduced into the filtrate through the exhaust port 42.

In one aspect, the secondary conduit 37 may be of substantially the same construction as the primary conduit. On the other hand, a pressure relief assembly mainly composed of an overflow valve, a pressure relay and a pressure sensor can be arranged in the auxiliary conduit, a driving circuit for controlling the output power of the motor is arranged on the driving machine, and a negative feedback loop is established between the pressure relief assembly and the driving circuit. Specifically, a pressure sensor at the end of the pressure relief assembly monitors the air pressure in the main pipe in real time, the air pressure is used as a signal source of the driving circuit for controlling the output power, when the air pressure rises, the output power of the driving machine is reduced, and the rotating speed is slowed down; when the air pressure is standard atmospheric pressure, the driver outputs rated power. On one hand, the variable power control mode can adopt a plurality of parallel resistors controlled by a relay, and when the air pressure is standard atmospheric pressure, all the parallel resistors are connected. On the other hand, an adjustable resistor formed by a sliding switch can be adopted, and when the air pressure is standard atmospheric pressure, the adjustable resistor is connected into the circuit with the minimum resistance value.

Meanwhile, the end of the secondary conduit is provided with an overflow valve capable of controlling the opening size of the exhaust port, when the air pressure is a standard atmospheric pressure, the overflow valve is in a completely closed state, when the pressure in the main conduit is gradually increased, the overflow valve is gradually opened for unloading, and the gas is discharged through the secondary conduit to ensure that the standard atmospheric pressure is maintained in the main conduit, and when the overflow valve is in a completely opened state, the air pressure in the main conduit is still higher than the standard atmospheric pressure (for achieving the purpose, the inner diameter of the secondary conduit is set smaller than the inner diameter of the main conduit, so that the air pressure when the secondary conduit is completely adopted under the condition that the output air volume of the vortex fan is the same is higher than the air pressure when the main conduit is completely adopted), and at the moment, the rotating speed of the driving machine is controlled to reduce the pressure of the main conduit.

In addition, as the filter cloth blockage is a gradual change process and is difficult to observe from the outside, a rotating speed sensor is arranged on the driving machine, and the using state of the filter cloth can be directly monitored. Can be determined by prior experiments, for example:

1) Completely closing an air outlet at the tail end of the main duct, and when an air outlet of the auxiliary duct is completely opened, setting the driving machine to be the minimum rotating speed r1, wherein the blockage degree of the corresponding main duct is 0.5a +0.5b, a =1, b =1, namely completely blocking;

2) Completely closing an air outlet at the tail end of the main guide pipe, and when an air outlet of the auxiliary guide pipe is completely opened, setting the driving machine to be a rated rotating speed r2, wherein the corresponding main guide pipe blockage degree is 0.5a +0.5b, a =0, b =1, namely partial blockage is realized, and only the rotating speed of the engine is left to be adjustable;

3) Completely closing an air outlet at the tail end of the main duct, and setting the driving machine to be a rated rotating speed r2 when an air outlet of the auxiliary duct is completely closed, wherein the blockage degree of the corresponding main duct is 0.5a +0.5b, a =0 and b =0, namely the blockage degree is 0;

a =1 when the rotation speed is the minimum rotation speed r1, and a =0 when the rotation speed is the rated rotation speed r 2;

b =1 when the secondary pipe tip relief valve is fully open, and b =0 when the relief valve is fully closed. (or set as 0.3a +0.7b, able to self-regulate the weight occupied by the motor rotation speed and the relief valve opening degree as required.)

When the blocking degree reaches more than 50b%, an alarm signal is sent to prompt the replacement of the filter cloth, a controllable valve is arranged at the joint of the auxiliary conduit and the main conduit for ensuring that the production is not affected when the filter cloth is replaced, and when the filter cloth needs to be replaced, the valve is closed, so that the air only flows to the branch conduit. The filter cloth adopts the plug-in card formula, changes convenient and fast.

In addition, in order to shorten the debugging time, prolong the service life and reduce the maintenance cost, the puffing assembly of the straw puffed feed processing center also adopts a self-learning control system, wherein the self-learning control system comprises a processor module, an input module, a monitoring module and a storage module which are connected with the input end of the processor module, an execution module connected with the output end of the processor module and a display module connected with the output end of the processor module.

The processor module can adopt an upper computer and is mainly used for comparing actual parameters with parameters in an operation parameter library, receiving specific control signals and sending execution processing or termination processing commands to the execution module.

The input module mainly refers to keyboard, PDA, or straw bulking machine integrated touch control equipment and other visual hardware, so as to input the parameters to be set.

The monitoring module mainly includes pressure sensor and the temperature sensor of setting in popped intracavity, and pressure sensor mainly used detects the straw material in the auger and poppes the pressure between the inner wall, and temperature sensor mainly used detects the popped temperature in the head that poppes. A plurality of humidity sensors can be arranged on the feeding path (the hopper and the inner wall of the puffing cavity) so as to detect the actual moisture content of the materials by a multi-parameter matching method. When the parameters of the straw and the straw bulking machine are changed, the parameters can be automatically adjusted, so that the straw bulking machine can normally operate, and the straw bulking effect is optimal.

The execution module comprises a bulking head heating unit and a driver control unit, the execution module mainly refers to a unit which is actually controlled, and the self-learning and self-feedback of the whole system are mainly represented by the execution module.

The storage module may adopt a storage medium located in the upper computer, such as a hard disk and a memory. The storage module is internally provided with a straw parameter library and an operation parameter library which are mutually associated and matched, the database can adopt SQL, and the compiling of the self-learning program can adopt MATLAB or OCTAVE.

The display module can adopt a liquid crystal display screen or only adopt an indicator lamp to display the screw rotation speed, the power supply voltage and the current, the yield of the straw bulking machine, the temperature of the bulking head, the pressure of the bulking cavity, the humidity of the bulking cavity and the like in real time. And the control data in the operation parameter library and the control data executed for the first time are displayed in a distinguishing way and can be distinguished through colors, for example, the original optimal operation parameter is represented as green, and the optimization parameter executed for the first time and learned for the first time is represented as blue.

The automatic control method of the self-learning control system comprises the following steps.

Step 1) establishing a straw parameter library and an operation parameter library which are mutually associated and matched, and setting a standard value, wherein the straw parameter library comprises the average water content, the average density and the average length of straws, the operation parameter library comprises the temperature of a puffing cavity, the pressure intensity of a puffing head, the rotating speed of a screw rod and the yield of the puffed straws, and the standard value comprises the input current of a driving machine.

And 2) manually detecting straw parameters, comparing the obtained parameters with a standard value, and executing step 3) if the straw parameters are positioned in the standard value, and executing step 7) if the straw parameters exceed or are lower than the standard value.

Step 3) inquiring a matched value in a straw parameter library, and sending an operation parameter value in an operation parameter library corresponding to the matched value to a processor module; if the query value of the straw parameter base is empty, sending a prompt, increasing or decreasing by 1 to 10 percent on the basis of the value, continuing to query the straw parameter base until a similar numerical value is queried, and establishing a new data element; and if the query value of the operation parameter base is empty, sending a prompt, increasing or decreasing the query value by 1 to 10 percent on the basis of the value, and continuing to query in the operation parameter base until the similar numerical information is queried, and establishing a new data element.

And 4) after receiving the operation parameters, the execution module sends control commands to the driver control unit and the expansion head heating unit to control the input current and the screw rotation speed.

And 5) when the temperature of the puffing cavity reaches the value corresponding to the operating parameter, the display module prompts that the preparation is finished.

Step 6) feeding straws into a puffing cavity, detecting operation parameters in real time through a monitoring module, wherein the temperature of the puffing cavity and the pressure of a puffing head can generate certain fluctuation due to the difference of straw uniformity and abrasion caused by continuous use of equipment, if the yield of the puffed straws is more than a basic parameter after 20min from the time point of the basic parameter, the operation parameters are sent to an execution module, the step 4) is executed, and meanwhile, the changed operation parameters are stored into an operation parameter library; if the yield of the puffed straw is less than the basic parameter, searching an operation parameter corresponding to the highest straw yield corresponding to the current straw parameter in an operation parameter library, sending the operation parameter to an execution module, and executing the step 4); and once the measured operation parameter exceeds 20% of the standard value, sending an alarm through the display module, and simultaneously executing the step 7).

And 7) when the execution module receives an external control signal or the operation parameter exceeds or is lower than a standard value, the execution module sends a control command to the driving machine and the expansion head heating unit and stops operating.

Claims (1)

1. The utility model provides a popped feed processing center of straw, includes pan feeding subassembly, popped subassembly and ejection of compact subassembly, its characterized in that:

the feeding assembly comprises a primary chopping device (2), a feeding channel assembly (4) arranged at an outlet (11) of the chopping device, a watering device (3) arranged in the feeding channel assembly (4), and a secondary chopping device (5) arranged at an outlet (21) of the feeding channel assembly;

the puffing assembly comprises a hopper (20) arranged at an outlet (21) of the feeding channel assembly, an anti-blocking device (23) arranged in the hopper (20) and a puffing device arranged at an outlet at the bottom of the hopper (20); the puffing device comprises puffing shells symmetrically arranged on two sides of the hopper (20), a screw (25) arranged in the puffing shells, a screw driver (15) arranged at the input end of the screw (25), puffing screws (29) arranged on the screw (25), puffing heads (27) respectively arranged at discharge ports (10) at two ends of the puffing shells, and a vertically arranged material mixing barrel (19) arranged at a discharge port (26) of the puffing heads, wherein the directions of the puffing screws (29) at two sides are opposite, and a puffing cavity (28) is formed between the puffing shells and the puffing screws (29);

the discharging assembly comprises a discharging channel assembly (7) arranged at the discharging end of the charging barrel (19) of the puffing device, a bacteria liquid spraying device (8) arranged on the discharging channel assembly (7), and a packing device (9) arranged at the outlet end of the discharging channel assembly (7);

the anti-blocking device (23) comprises a material stirring shaft and a reverse material stirring blade;

a dust separation device is arranged on a feed inlet of the feed channel assembly (4), the dust separation device comprises a sealing cover (34), a vortex fan (33) arranged on one side of the sealing cover (34) and a main guide pipe (36) arranged on the other side of the sealing cover, a vortex air outlet is opposite to an air inlet of the main guide pipe (36), and a vortex fan driver (32) is arranged at the input end of the vortex fan (33);

a filter screen (35) is arranged between the main duct (36) and the sealing cover (34), filter cloth (39) is arranged at the tail end of the main duct, an auxiliary duct (37) is arranged on the main duct, a pressure relief assembly (38) is arranged in the auxiliary duct (37), and an exhaust port (40) of the main duct and an exhaust port (42) of the auxiliary duct are communicated into a filtrate container (41);

the pressure relief assembly (38) includes a relief valve, a pressure relay, and a pressure transducer.

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