CN108655002B - An impurity removal and drying device for agricultural grain - Google Patents

Abstract

the invention discloses an impurity removing and drying device for agricultural grains, which comprises a shell and a movable base, wherein the bottom of the shell is fixedly connected to the upper surface of the movable base, and a material guide cylinder is fixedly connected to a feeding port on the left side of the top of the shell. According to the invention, the problem of low grain treatment efficiency of the existing agricultural grain treatment device is solved by arranging the shell, the movable base, the guide cylinder, the impurity removal device, the fan, the partition plate, the drying device, the guide plate, the vibration exciter and the conveying device to be matched with each other, the problem of inconvenience in impurity cleaning of the existing agricultural grain impurity removal drying device is solved by arranging the impurity removal device, the guide cylinder and the partition plate to be matched with each other, the problem of inconvenience in drying of grain accumulation in the existing agricultural grain treatment device is solved by arranging the partition plate, the guide plate and the vibration exciter to be matched with each other, and the problem of low drying efficiency of the existing agricultural grain treatment device is solved by arranging the fan and the drying device to be matched.

Description

An impurity removal and drying device for agricultural grain

technical field

The invention relates to the technical field of agricultural machinery and equipment, in particular to an impurity removal and drying device for agricultural grains.

Background technique

During the grain harvest season, farmers generally use harvesters to thresh and pulverize the grain, which greatly reduces the labor intensity of farmers. However, the grain harvested by the harvester generally has more impurities, and the humidity in the grain is high, so it cannot be stored directly. Drying and impurity removal can be stored, but the existing grain processing devices for agricultural grains need to remove impurities and dry the grains step by step, and cannot quickly and effectively dry and remove impurities, which reduces the efficiency of grain processing , increasing the labor intensity of farmers.

Contents of the invention

(1) Solved technical problems

Aiming at the deficiencies of the prior art, the present invention provides an impurity removal and drying device for agricultural grains, which solves the problem of low grain processing efficiency of the existing agricultural grain processing devices.

(2) Technical solution

In order to achieve the above object, the present invention provides the following technical solutions: a device for removing impurities and drying agricultural grains, comprising a housing and a mobile base, the bottom of the housing is fixedly connected to the upper surface of the mobile base, the housing The feeding port on the left side of the top is fixedly connected with a material guide cylinder, the left side of the housing is fixedly connected with an impurity removal device through a fixing frame, the upper surface of the housing is fixedly connected with a fan, and the upper surface of the housing is fixedly connected with a fan. The inner top is fixedly connected with a partition, and a drying device is fixedly connected between the right side of the partition and the right inner wall of the housing, and the air outlet pipe of the fan runs through the top of the housing and is fixedly connected to the drying On the top of the device, material guide plates are fixedly connected to the left and right inner walls of the housing, and two material guide plates are distributed alternately on the left and right inner walls of the housing, and the lower surface of the material guide plate is fixedly connected to a vibrator , the bottom of the left inner wall of the housing is fixedly connected with a collecting plate, and the inner bottom of the housing is fixedly connected with a conveying device, and the conveying device includes a conveying pipe, a feeding hopper, a discharge pipe, and a second drive motor , the conveying shaft and the conveying screw, the inner bottom of the housing is fixedly connected with a conveying pipe, the material guide port on the left side of the upper surface of the conveying pipe is fixedly connected with a feeding hopper, and the right side of the collecting plate collects The feed port is located directly above the feed hopper, the right end of the conveying pipe runs through the right inner wall of the housing, and the fixed outlet on the right side of the lower surface of the conveying pipe is fixedly connected with a discharge pipe. The left side of the motor is fixedly connected with a second drive motor, the output shaft of the second drive motor runs through the left side of the housing and the left end face of the delivery pipe and is fixedly connected with a delivery shaft through a coupling, and the delivery shaft is far away from the first One end of the second drive motor is movably connected to the right inner wall of the conveying pipe through a bearing base, and a conveying screw is fixedly connected to the conveying rotating shaft.

Preferably, the impurity removal device includes an impurity removal pipe, a first drive motor, an impurity removal fan blade, a first filter screen, a second filter screen, a through hole, a threaded joint, a first slag accumulation cylinder and a second slag accumulation cylinder The right port of the impurity removal pipe runs through the left side of the housing, and a first drive motor is fixedly connected between the inner top and bottom of the impurity removal pipe through a fixed rod, and the output shaft of the first drive motor The impurity removal fan blade is fixedly connected through the fixed block, the first filter net and the second filter net are fixedly connected between the inner top and the bottom of the impurity removal pipe, and the second filter net is located on the left side of the first filter net, so The lower surface of the impurity removal pipe is provided with two through holes, the two through holes are respectively located at the bottom of the first filter screen and the second filter screen, and the two through holes are fixedly connected with threaded joints, and the two threaded joints are respectively A first slag accumulation cylinder and a second slag accumulation cylinder are threadedly connected.

Preferably, the drying device includes a multi-way pipe, a joint, a first heating wire, an air delivery pipe, a second heating wire and a nozzle, the left end of the multi-way pipe is fixedly connected to the right side of the partition, and the multi-way pipe The right end of the fan is fixedly connected to the right inner wall of the housing, the air inlet of the multi-way pipe is fixedly connected with a joint, the outlet pipe of the fan runs through the top of the housing and is fixedly connected to the joint, and the multi-way pipe is fixedly connected to the joint. A first heating wire is fixedly connected between the inner walls of the left and right sides, and an air delivery pipe is fixedly connected to the bottom air outlet of the multi-way pipe. The number of the air delivery pipes is six, and the six air delivery pipes are equally spaced in the The bottom of the tube, the end of the gas delivery tube away from the multi-way tube is fixedly connected with a nozzle, and the inner wall of the gas delivery tube is fixedly connected with a second heating wire.

Preferably, the material guide plate includes a material collecting groove, a distribution groove and a ventilation hole, a material collecting groove is opened on the left side of the upper surface of the material guiding plate, and a material collecting groove is opened on the upper surface of the material guiding plate to connect with the material collecting groove. There are vent holes in the inner bottom of the split slot, the split slots are evenly distributed on the upper surface of the material guide plate, the vent holes are evenly distributed in the inner bottom of the split slot, and the diameter of the vent holes is 3 -5 mm.

(3) Beneficial effects

The invention provides an impurity removal and drying device for agricultural grains. Has the following beneficial effects:

(1) The present invention cooperates with each other by arranging housing, mobile base, material guide cylinder, impurity removal device, blower fan, partition, drying device, material guide plate, vibrator and conveying device, when equipment is used, the grain The material guide cylinder is introduced into the inner wall of the housing, and the grain enters the inner side of the housing through the bottom end of the material guide cylinder. The output shaft of the first driving motor drives the impurity removal fan blade to rotate through the fixed block, so that the right port area of the impurity removal pipe Negative air pressure is generated, the grain falls from the right port of the impurity removal pipe, the lighter impurities in the grain are sucked into the impurity removal pipe, the grain falls on the upper surface of the material guide plate under the action of gravity, and the air outlet pipe of the fan passes through the drying device The external airflow is heated to dry the grain obtained on the material guide plate, and the grain slowly falls from the material guide plate under the double action of gravity and the vibration exciter, and the grain falling on the material guide plate finally passes through the collecting plate Imported into the hopper, the output shaft of the second drive motor drives the conveying shaft to rotate through the coupling, and the conveying screw on the conveying shaft guides the grain out, and discharges it through the discharge pipe, effectively removing impurities and drying the grain at the same time The method solves the problem of low grain processing efficiency of the existing agricultural grain processing device.

(2) The present invention cooperates with each other by arranging the impurity removal device, the material guide cylinder and the partition plate. When the equipment is in use, the grain is introduced into the inside of the housing through the material guide cylinder, and the output shaft of the first drive motor drives the impurity removal fan through the fixed block. The blade rotates, and the impurity removal fan blade rotates to generate negative air pressure in the right port area of the impurity removal pipe. The impurities in the grain falling from the bottom of the material guide cylinder are sucked into the impurity removal pipe and then pass through the first filter and the second filter. Filtration, filtering impurities to prevent pollution of the surrounding air environment. The filtered impurities enter the first slag accumulation cylinder and the second slag accumulation cylinder through the through holes at the bottom respectively, preventing too much impurities in the impurity removal pipe from affecting the performance of the impurity removal device. Filtration, the first slag accumulation cylinder is threadedly connected with the second slag accumulation cylinder and the threaded joint head, which is convenient for cleaning the impurities accumulated in the impurity removal pipe, and solves the problem that the existing agricultural grain impurity removal and drying device is not easy to clean impurities.

(3) The present invention cooperates with each other by arranging partitions, deflectors and exciters. When the equipment is in use, the grain is introduced into the interior of the housing through the bottom end of the material guide cylinder, and falls on the material guide plate after being filtered by impurity removal. , the grains fall into the collection tank, under the action of the vibrator and gravity, the grains in the collection tank slowly fall downwards through the splitter tank, and the partition prevents a large amount of grains from falling at the same time, which will cause the grains to not be dried evenly, effectively The dispersing of the grain is beneficial to the drying of the drying device, and solves the problem that the existing grain accumulation is not convenient for drying.

(4) In the present invention, the fan and the drying device cooperate with each other, the drying device dries the grain, the fan guides the external air flow into the multi-way pipe through the air outlet pipe, and the external air flow passes through the first heating wire in the multi-way pipe. Heating, then leading into the air delivery pipe, the second heating wire in the air delivery pipe reheats the airflow, and finally the hot airflow is sprayed out through the nozzle to dry the grain on the surface of the deflector, and the grain is dispersed on the deflector. The drying speed of the grain is effectively accelerated, and the problem of low drying efficiency of the existing agricultural grain processing device is solved.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic structural view of the impurity removal device of the present invention;

Fig. 3 is a schematic structural view of the drying device of the present invention;

Fig. 4 is a schematic top view of the deflector of the present invention.

In the figure: 1 shell, 2 mobile base, 3 guide cylinder, 4 impurity removal device, 41 impurity removal pipe, 42 first drive motor, 43 impurity removal fan blade, 44 first filter screen, 45 second filter screen, 46 through hole, 47 threaded connector, 48 first slag accumulation cylinder, 49 second slag accumulation cylinder, 5 fan, 6 partition, 7 drying device, 71 multi-way pipe, 72 joint, 73 first heating wire, 74 Air pipe, 75 nozzle, 76 second heating wire, 8 material guide plate, 81 collecting tank, 82 diverting tank, 83 air hole, 9 vibrator, 10 collecting plate, 11 conveying device, 111 conveying pipe, 112 inlet Hopper, 113 discharge pipe, 114 second drive motor, 115 delivery shaft, 116 delivery screw.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figures 1-4, the present invention provides a technical solution: a device for removing impurities and drying agricultural grains, including a housing 1 and a mobile base 2, the bottom of the housing 1 is fixedly connected to the upper surface of the mobile base 2 , the feeding port on the left side of the top of the housing 1 is fixedly connected with a guide cylinder 3, and the left side of the housing 1 is fixedly connected with a removal device 4 through a fixed frame, and the removal device 4 includes a removal pipe 41, a second A drive motor 42, impurity removal fan blade 43, first filter screen 44, second filter screen 45, through hole 46, threaded joint 47, first slag accumulation cylinder 48 and second slag accumulation cylinder 49, impurity removal pipe 41 The right port of the first drive motor 42 runs through the left side of the housing 1, and the first drive motor 42 is fixedly connected between the top and the bottom of the inner side of the impurity removal pipe 41 through a fixed rod. Miscellaneous fan blade 43, the first filter screen 44 and the second filter screen 45 are fixedly connected between the inner top and the bottom of the miscellaneous removal pipe 41, and the second filter cloth 45 is positioned at the left side of the first filter web 44, and the miscellaneous removal pipe 41 The lower surface of the bottom surface is provided with two through holes 46, and the two through holes 46 are respectively located at the bottom of the first filter screen 44 and the second filter screen 45, and the two through holes 46 are fixedly connected with a threaded joint 47, and the two threaded connections The head 47 is threadedly connected with the first slag accumulation cylinder 48 and the second slag accumulation cylinder 49 respectively, the upper surface of the housing 1 is fixedly connected with the blower fan 5 , the inner top of the housing 1 is fixedly connected with the partition plate 6 , the right side of the partition plate 6 A drying device 7 is fixedly connected between the side and the right side inner wall of the housing 1. The air outlet pipe of the fan 5 runs through the top of the housing 1 and is fixedly connected to the top of the drying device 7. The drying device 7 includes a multi-pass Pipe 71, joint 72, the first heating wire 73, air delivery pipe 74, the second heating wire 76 and nozzle 75, the left end of multiway pipe 71 is fixedly connected to the right side of dividing plate 6, the right end of multiway pipe 71 is fixedly connected On the right inner wall of the housing 1, the air inlet of the multi-way pipe 71 is fixedly connected with a joint 72, and the outlet pipe of the fan 5 runs through the top of the housing 1 and is fixedly connected to the joint 72. The left and right sides of the multi-way pipe 71 A first heating wire 73 is fixedly connected between the inner walls, and an air delivery pipe 74 is fixedly connected to the bottom air outlet of the multi-way pipe 71. The number of the air delivery pipes 74 is six, and the six air delivery pipes 74 are equidistantly distributed in the multi-way pipe 71. The bottom of the air pipe 74 is fixedly connected with a nozzle 75 at the end far away from the multi-way pipe 71, the inner wall of the air pipe 74 is fixedly connected with a second heating wire 76, and the inner walls of the left and right sides of the housing 1 are fixedly connected with a material guide plate 8. Two material guide plates 8 are staggeredly distributed on the left and right inner walls of the housing 1. The lower surface of the material guide plate 8 is fixedly connected with a vibrator 9. The material guide plate 8 includes a material collection tank 81, a distribution tank 82 and a vent hole 83, the left side of the upper surface of the material guide plate 8 is provided with a collection tank 81, the upper surface of the material guide plate 8 is provided with a shunt 82 connected with the collection tank 81, and the inner bottom of the shunt 82 is provided with a ventilation hole 83 , the splitter groove 82 is evenly distributed on the upper surface of the material guide plate 8, and the vent hole 83 is evenly distributed on the inner bottom of the splitter groove 82. The diameter of the vent hole 83 is 3-5 mm, and the vent hole 83 is convenient for the hot air of the drying device 7. The inner bottom of the shell 1 is dried by the air flow, and the bottom of the left inner wall of the shell 1 is fixedly connected with a collecting plate 10, and the collecting plate 10 is located under the material guide plate 8, and the inner bottom of the shell 1 is fixedly connected with a conveyor Device 11, the conveying device 11 includes a conveying pipe 111, a feed hopper 112, a discharge pipe 113, a second drive motor 114, a conveying shaft 115 and a conveying screw 116, and the inner bottom of the housing 1 is fixedly connected with a conveying pipe 111, conveying The feed port on the left side of the upper surface of the pipe 111 is fixedly connected with the feed hopper 112, the right feed port of the collecting plate 10 is located directly above the feed hopper 112, and the right end of the conveying pipe 111 runs through the right side of the housing 1 Inner wall, the fixed outlet on the right side of the lower surface of the delivery pipe 111 is fixedly connected with a discharge pipe 113, and the left side of the housing 1 is fixedly connected with a second drive motor 114, the second drive motor 114 is a low-speed motor. The output shaft of the second driving motor 114 runs through the left side of the housing 1 and the left end of the delivery pipe 111 and is fixedly connected with the delivery shaft 115 through a coupling. Connected to the right inner wall of the delivery pipe 111 , the delivery screw 116 is fixedly connected to the delivery shaft 115 .

In summary, the present invention can be obtained by setting the housing 1, the mobile base 2, the material guide cylinder 3, the impurity removal device 4, the blower fan 5, the partition plate 6, the drying device 7, the material guide plate 8, the vibrator 9 and the conveying The devices 11 cooperate with each other. When the equipment is in use, the grain is introduced into the inner wall of the housing 1 through the material guide cylinder 3, the grain enters the inner side of the housing 1 through the bottom end of the material guide cylinder 3, and the output shaft of the first drive motor 42 is fixed by The block drives the impurity removal fan blade 43 to rotate, so that the right port area of the impurity removal pipe 41 produces negative air pressure, and the grain falls from the right port of the impurity removal pipe 41, and the lighter impurities in the grain are sucked in the impurity removal pipe 41, and the grain Under the action of gravity, it falls on the upper surface of the material guide plate 8, and the air outlet pipe of the blower fan 5 heats the external airflow through the drying device 7, and the grain obtained on the material guide plate 8 is dried. Under the double action of the material guide plate 8, the grains falling slowly from the material guide plate 8 are finally introduced into the feed hopper 112 through the material collecting plate 10, and the output shaft of the second drive motor 114 is driven by the coupling to convey The rotating shaft 115 rotates, and the conveying screw 116 on the conveying rotating shaft 115 leads out the grain, and discharges it through the discharge pipe 113, effectively removing impurities and drying the grain at the same time, which solves the problem of low grain processing efficiency of the existing agricultural grain processing device The problem.

By setting the impurity removal device 4, the material guide cylinder 3 and the partition plate 6 to cooperate with each other, when the equipment is in use, the grain is introduced into the interior of the housing 1 through the material guide cylinder 3, and the output shaft of the first drive motor 42 drives the impurity removal through the fixed block. The fan blade 43 rotates, and the impurity removal fan blade 43 rotates so that the right port area of the impurity removal pipe 41 generates negative air pressure, and the impurities in the grain falling from the bottom of the material guide cylinder 3 are sucked into the inside of the impurity removal pipe 41 and then pass through the first filter. 44 and the filtration of the second filter screen 45, the first filter screen 44 and the second filter screen 45 filter the impurities in stages, prevent the blockage of the impurity removal device 4, filter the impurities, prevent the surrounding air environment from being polluted, and filter out impurities Enter the first slag accumulation cylinder 48 and the second slag accumulation cylinder 49 through the through hole 46 at the bottom respectively, preventing impurities in the impurity removal pipe 41 from affecting the filtration of the impurity removal device 4 too much, the first slag accumulation cylinder 48 and the second The slag accumulation cylinder 49 is threadedly connected with the threaded connector 47, which is convenient for cleaning the impurities accumulated in the impurity removal pipe 41, and solves the problem that the existing agricultural grain removal and drying device is not convenient for cleaning impurities.

By setting the partition plate 6, the flow guide plate 8 and the vibrator 9 to cooperate with each other, when the equipment is in use, the grain is introduced into the interior of the housing 1 through the bottom end of the material guide cylinder 3, and falls on the material guide plate 8 after being filtered by impurity removal. Above, the grains fall into the collection tank 81. Under the action of the vibrator 9 and gravity, the grains in the collection tank 81 slowly fall downwards through the distribution tank 82. The partition plate 6 prevents a large amount of grains from falling at the same time, causing the grains to be uneven. In the case of drying, the grains are effectively dispersed, which is beneficial to the drying of the drying device 7, and solves the problem that the existing grain accumulation is not convenient for drying.

By arranging the fan 5 and the drying device 7 to cooperate with each other, the drying device 7 dries the grains, the fan 5 guides the external air flow into the multi-way pipe 71 through the air outlet pipe, and the external air flow passes through the first heating in the multi-way pipe 71. The preliminary heating of the wire 73 is then introduced into the air delivery pipe 74, and the second heating wire 76 in the air delivery pipe 74 heats the air flow twice, and finally the hot air flow is ejected by the nozzle 75 to dry the grain on the upper surface of the deflector 8 The grains are dispersed on the deflector 8, effectively speeding up the drying speed of the grains, and solving the problem of low drying efficiency of the existing agricultural grain processing devices.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. any such actual relationship or order exists between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a referenced structure" does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (1)

1. The utility model provides an agricultural is edulcoration drying device for cereal, includes casing (1) and removes base (2), the bottom fixed connection of casing (1) is at the upper surface of removing base (2), its characterized in that: the feeding device is characterized in that a guide cylinder (3) is fixedly connected to the left feeding port at the top of the shell (1), an impurity removing device (4) is fixedly connected to the left side face of the shell (1) through a fixing frame, a fan (5) is fixedly connected to the upper surface of the shell (1), a partition plate (6) is fixedly connected to the top of the inner side of the shell (1), a drying device (7) is fixedly connected between the right side face of the partition plate (6) and the inner wall of the right side of the shell (1), an air outlet pipe of the fan (5) penetrates through the top of the shell (1) and is fixedly connected to the top of the drying device (7), guide plates (8) are fixedly connected to the inner walls of the left side and the right side of the shell (1), the two guide plates (8) are distributed on the inner walls of the left side and the right side of the shell (1) in a staggered manner, vibration exciters (9, inboard bottom fixedly connected with conveyor (11) of casing (1), conveyor (11) are including conveyer pipe (111), feeder hopper (112), row's material pipe (113), second driving motor (114), carry pivot (115) and carry flight (116), inboard bottom fixedly connected with conveyer pipe (111) of casing (1), the left guide mouth fixedly connected with feeder hopper (112) of upper surface of conveyer pipe (111), the right side collection mouth of collection board (10) is located feeder hopper (112) directly over, the right-hand member of conveyer pipe (111) runs through the right side inner wall of casing (1), the fixed discharge gate department fixedly connected with row's material pipe (113) on the lower surface right side of conveyer pipe (111), the left surface fixedly connected with second driving motor (114) of casing (1), the output shaft of second driving motor (114) runs through the left surface of casing (1) and the left end face of conveyer pipe (111) A conveying rotating shaft (115) is fixedly connected with the coupler, one end of the conveying rotating shaft (115) far away from the second driving motor (114) is movably connected with the inner wall of the right side of the conveying pipe (111) through a bearing base, and a conveying spiral sheet (116) is fixedly connected with the conveying rotating shaft (115);

The impurity removing device (4) comprises an impurity removing pipe (41), a first driving motor (42), impurity removing fan blades (43), a first filter screen (44), a second filter screen (45), through holes (46), a threaded connector (47), a first slag accumulating cylinder (48) and a second slag accumulating cylinder (49), wherein a right port of the impurity removing pipe (41) penetrates through the left side face of the shell (1), the first driving motor (42) is fixedly connected between the top and the bottom of the inner side of the impurity removing pipe (41) through a fixing rod, the impurity removing fan blades (43) are fixedly connected with an output shaft of the first driving motor (42) through a fixing block, the first filter screen (44) and the second filter screen (45) are fixedly connected between the top and the bottom of the inner side of the impurity removing pipe (41), the second filter screen (45) is positioned on the left side of the first filter screen (44), two through holes (46) are formed in the lower surface of the impurity removing pipe, the two through holes (46) are respectively positioned at the bottoms of the first filter screen (44) and the second filter screen (45), the two through holes (46) are fixedly connected with threaded connectors (47), and the two threaded connectors (47) are respectively in threaded connection with a first slag deposition cylinder (48) and a second slag deposition cylinder (49);

The drying device (7) comprises a multi-way pipe (71), a joint (72), a first heating wire (73), air conveying pipes (74), a second heating wire (76) and a spray head (75), wherein the left end of the multi-way pipe (71) is fixedly connected to the right side surface of the partition board (6), the right end of the multi-way pipe (71) is fixedly connected to the right inner wall of the shell (1), an air inlet of the multi-way pipe (71) is fixedly connected with the joint (72), an air outlet pipe of the fan (5) penetrates through the top of the shell (1) and is fixedly connected to the joint (72), the first heating wire (73) is fixedly connected between the inner walls of the left side and the right side of the multi-way pipe (71), the air conveying pipes (74) are fixedly connected to the air outlet at the bottom of the multi-way pipe (71), the number of the air conveying pipes (74) is six, and the six, a spray head (75) is fixedly connected to one end, far away from the multi-way pipe (71), of the air conveying pipe (74), and a second heating wire (76) is fixedly connected to the inner side wall of the air conveying pipe (74);

the material guide plate (8) comprises a material collecting groove (81), a flow dividing groove (82) and air vents (83), the material collecting groove (81) is formed in the left side of the upper surface of the material guide plate (8), the flow dividing groove (82) communicated with the material collecting groove (81) is formed in the upper surface of the material guide plate (8), the air vents (83) are formed in the bottom of the inner side of the flow dividing groove (82), the flow dividing groove (82) is uniformly distributed on the upper surface of the material guide plate (8), the air vents (83) are uniformly distributed at the bottom of the inner side of the flow dividing groove (82), and the diameter of the air vents (83) is 3-5 mm.