CN218012883U - Double-air-duct bran suction device of fresh rice machine - Google Patents
Double-air-duct bran suction device of fresh rice machine Download PDFInfo
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- CN218012883U CN218012883U CN202220205543.7U CN202220205543U CN218012883U CN 218012883 U CN218012883 U CN 218012883U CN 202220205543 U CN202220205543 U CN 202220205543U CN 218012883 U CN218012883 U CN 218012883U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/14—Measures for saving energy, e.g. in green houses
Abstract
The utility model relates to a double-air-duct chaff suction device of a fresh rice machine, which comprises a hopper, a rice huller, a rice milling device and a rice bran separation system which are arranged on a frame; the rice hulling device is arranged below the hopper and communicated with the bottom of the hopper; the rice milling device is arranged below the rice hulling device, and a feeding end at the top of the rice milling device is communicated with a discharging end at the bottom of the rice hulling device; a rice hulling chamber rice chaff absorbing air duct is further arranged on the right side of the rice hulling device, and a rice chaff absorbing opening at the bottom of the rice hulling chamber rice chaff absorbing air duct is communicated with a discharge end at the bottom of the rice hulling device; the rice milling device is also communicated with the middle part of the rice hulling chamber bran absorbing air duct through a rice milling chamber bran absorbing air duct; the rice huller room inhale the chaff wind channel and communicate with rice bran separation system through the air door hole. The utility model discloses the beneficial effect who reaches is: the rice husk separator can realize the separation of rice husk and rice husk through a single fan, reduce the space occupied by the husk suction device and realize the automatic adjustment of the opening of the husk suction fan.
Description
Technical Field
The utility model relates to a bright rice machine equipment technical field, especially a chaff device is inhaled in bright rice machine double air ducts.
Background
Fresh rice is rice which is milled and sold at present and is divided into brown rice, germ rice, polished rice and the like, and a fresh rice machine is equipment for processing the fresh rice. The fresh rice machine is commonly used in communities, and requires the rice bran separation device of the fresh rice machine to automatically operate, so that the occupied space is small. The rice huller often and rice milling subassembly of inhaling of current fresh rice huller or rice huller grind the combined rice machine have respectively adopted one set of chaff device of inhaling, make rice mill size increase, and the structure is complicated, and inhales the air door aperture size of chaff device by artifical manual regulation control, has certain degree of difficulty to ordinary user, can't satisfy the technical demand to fresh rice machine.
Based on the above, the inventor researches the prior art, combines the defects of the equipment in the working process, and designs a new fresh rice machine based on the actual requirements.
For full protection, the fresh rice machine is split into a plurality of schemes for application. The scheme is that the double-air-duct bran sucking device of the fresh rice machine is used for protecting the bran sucking part. The function is as follows: the rice bran separator can realize the separation of rice bran and rice husks through a single fan, reduce the space occupied by the bran suction device and realize the automatic adjustment of the opening of the bran suction fan.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's shortcoming, provide and to realize rough separation of millet and rice bran separation through single fan, can reduce and inhale the shared space of chaff device, and can realize inhaling chaff device to the two wind channels of bright rice machine of chaff draught opening automatically regulated.
The purpose of the utility model is realized through the following technical scheme: a double-air-duct chaff suction device of a fresh rice machine comprises a hopper, a rice huller, a rice mill and a rice bran separation system which are arranged on a frame;
the rice hulling device is arranged below the hopper and communicated with the bottom of the hopper;
the rice milling device is arranged below the rice hulling device, and a feeding end at the top of the rice milling device is communicated with a discharging end at the bottom of the rice hulling device;
a rice hulling chamber rice chaff absorbing air duct is further arranged on the right side of the rice hulling device, and a rice chaff absorbing opening at the bottom of the rice hulling chamber rice chaff absorbing air duct is communicated with a discharge end at the bottom of the rice hulling device;
the rice milling device is also communicated with the middle part of the rice hulling chamber bran absorbing air duct through a rice milling chamber bran absorbing air duct;
the rice huller room inhale the chaff wind channel and communicate with rice bran separation system through the air door hole.
Further, the rice hulling device comprises a rice hulling chamber mounting plate, a rice hulling chamber cover plate and a rice hulling chamber frame;
the front and back surfaces of the rice hulling chamber frame are respectively connected with the rice hulling chamber mounting plate and the rice hulling chamber cover plate and jointly form a rice hulling chamber, and a rice hulling rubber roll component for hulling rice is mounted on the rice hulling chamber mounting plate inside the rice hulling chamber.
Further, the rice bran separation system comprises a fan, an air pipe II and a cyclone separator;
the fan is fixedly arranged on the rice hulling chamber mounting plate, and the cyclone separator is fixedly arranged on the rack and positioned below the fan;
the inlet end of the fan is aligned with the air door hole in the rice hulling chamber mounting plate, the outlet end of the fan is communicated with one end of an air pipe II, and the other end of the air pipe II is communicated with the top of the cyclone separator;
and an air valve II is also arranged on the air pipe II.
Furthermore, the rice milling chamber bran suction air duct comprises an air duct I, one end of the air duct I is communicated with the rice milling chamber bran suction air duct, and the other end of the air duct I is communicated with a rice mill of the rice milling device;
an air valve I is further arranged on the air pipe I;
the rice hulling chamber chaff absorbing air duct is formed by enclosing a plurality of dropping plates and arc plates which are arranged between a rice hulling chamber mounting plate and a rice hulling chamber cover plate;
and the air pipe I is communicated with a through hole in the middle of the dripping plate at the lower side of the chaff suction air duct of the rice hulling chamber.
Furthermore, an air door is arranged at the air door hole;
the air door comprises a rotary shaft, one end of the rotary shaft is rotatably and vertically arranged on the rice hulling chamber mounting plate, the other end of the rotary shaft vertically penetrates through the rice hulling chamber cover plate and then is in transmission connection with an output shaft of an air door motor, and the air door motor is mounted on the rice hulling chamber cover plate.
Furthermore, the double-air-duct bran suction device of the fresh rice machine also comprises a control system;
the control system comprises a single chip microcomputer, a sensor, an air door motor driver, a display and a memory, wherein the single chip microcomputer is respectively in signal connection with the sensor, the air door motor driver, the display and the memory;
the air door motor driver is electrically connected with the air door motor;
the sensor sets up the position in order to detect the air door on the rice huller room mounting panel.
Furthermore, the lower end of the hopper is also provided with a blanking device capable of adjusting the opening of a blanking port, and the hopper is communicated with a feeding port at the top end of the rice huller through the blanking device;
the bottom of the blanking device is provided with a blanking port, and an L-shaped opening and closing door and a correlation light eye E are arranged at the blanking port; the L-shaped opening and closing door is connected with an opening and closing motor;
the switching motor is electrically connected with the switching motor driver.
Furthermore, the rice milling device comprises a rice mill, wherein one end of the rice mill is provided with a belt pulley, and the belt pulley is connected with an output shaft of the main motor through a belt.
Furthermore, the fan comprises a fan cavity and a fan impeller, the fan impeller is arranged in the fan cavity through a fan main shaft, and the fan main shaft penetrates out of one side face of the fan cavity and then is connected with a main motor output shaft through a second belt.
Furthermore, the control system also comprises a relay which is electrically connected with the single chip microcomputer and the main motor respectively.
The utility model has the advantages of it is following:
(1) The rice huller is characterized in that a single-fan double-air-duct rice huller is arranged in the rice huller, a rice hulling chamber is arranged in the rice huller, and a rice hulling device is arranged in the rice huller;
(2) The air door position is adjusted through the air door motor driver, when different opening degrees of the blanking device can be recorded through the sensor and the memory, the air door position when the corresponding rice bran separation effect is achieved is adjusted, the opening degree of the air door hole is adjusted, namely, the opening degree initialization work of the air door hole is carried out by utilizing the opening degree of the blanking port of the blanking device, along with the processing, the opening degree of the air door hole is automatically adjusted along with the opening degree of the blanking port of the blanking device all the time, the opening degree of the air door hole is kept at a proper opening position, and then the automatic adjustment of the opening degree of the bran air door is realized through the control system.
Drawings
FIG. 1 is a schematic view of the present invention;
fig. 2 is a schematic view of a chaff-sucking duct of the rice hulling chamber of the present invention;
FIG. 3 is a schematic view of the air door hole of the present invention;
FIG. 4 is a schematic diagram of a control system of the present invention;
FIG. 5 is a schematic view at the axis of rotation;
FIG. 6 is a schematic view of a bottom feed opening of the feeding device;
in the figure: 1. the rice huller comprises a rack, 2, a hopper, 3, a blanking device, 4, a rice huller device, 5, a rice huller device, 6, a rice huller room bran suction air channel, 7, a rice huller room bran suction air channel, 8, a rice bran separation system, 9, an air door motor, 41, a rice huller room mounting plate, 42, a rice huller room cover plate, 51, a rice huller, 61, a flowing plate I, 62, a flowing plate II, 63, a flowing plate III, 64, an air door hole, 65, an arc plate, 608, an air door, 609, a rotating shaft, 71, an air pipe I, 72, an air valve I, 81, an air valve II, 82, a fan, 83, an air pipe II, 84, a cyclone separator, 85, a main motor, 93, an L-shaped opening and closing door, 94, an opposite light eye E,95 and an opening and closing motor.
Detailed Description
The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.
As shown in fig. 1-6, a double-duct rice chaff-sucking device of a fresh rice machine comprises a frame 1, a hopper 2, an unloading device 3, a rice hulling device 4, a rice husking device 5, a rice husking chamber chaff-sucking duct 6, a rice husking chamber chaff-sucking duct 7, a rice husking separation system 8 and a control system, wherein the hopper 2, the rice hulling device 4, the rice husking device 5, the rice husking separation system 8 and the control system are all arranged on the frame 1, the unloading device 3 is arranged on an outlet below the hopper 2, the rice husking chamber chaff-sucking duct 6 is arranged inside the rice husking device 4, and the rice husking chamber chaff-sucking duct 7 is respectively connected with the rice husking chamber chaff-sucking duct 6 and the rice husking device 5.
Meanwhile, the rice huller 4 comprises a rice hulling chamber mounting plate 41, a rice hulling chamber cover plate 42, a rice hulling chamber frame and a rice hulling rubber roll component, wherein the rice hulling chamber mounting plate 41, the rice hulling chamber cover plate 42 and the rice hulling chamber frame form a rice hulling chamber, and the rice hulling rubber roll component is arranged on the rice hulling chamber mounting plate 41.
The rice hulling chamber chaff absorbing air duct 6 comprises a flowing plate I61, a flowing plate II 62, a flowing plate III 63, an arc-shaped plate 65 and an air door hole 64 arranged on a rice hulling chamber mounting plate 41; the rice huller comprises a hulling chamber mounting plate 41, a rice hulling chamber mounting plate 42, a flowing plate I61, a flowing plate II 62, a flowing plate III 63 and an arc-shaped plate 65, wherein the flowing plate I61, the flowing plate II 62, the flowing plate III 63 and the arc-shaped plate 65 are fixedly mounted on the hulling chamber mounting plate 41 respectively and are attached to the inner surface of the hulling chamber mounting plate 42; the arc-shaped plate 65 comprises an upper connecting plate, a bending part and a lower connecting plate which are connected in sequence; the right end of a flowing plate III 63 is connected with the bottom end of a lower connecting plate of an arc-shaped plate 65, a flowing plate II 62 is arranged between the flowing plate III 63 and a hulling rubber roller component and inclines rightwards, the left end of the flowing plate II 62 is positioned at the middle upper part of an opening between the flowing plate I61 and the flowing plate III 63, the right end of the flowing plate II 62 is positioned at an opening formed between the flowing plate III 63 and the left end of the lower connecting plate, so that a bran sucking channel sucking bran upwards rightwards is formed among the flowing plate II 62, the flowing plate III 63 and the arc-shaped plate 65, an air door hole 64 is formed in the bent part of the arc-shaped plate 65 at the right upper end of the bran sucking channel, two ends of a rotating shaft 609 of an air door 608 are rotatably arranged on a hulling chamber mounting plate 41 and a hulling chamber mounting plate 42 respectively, one end of the rotating shaft 609 penetrates through the hulling chamber mounting plate 42 and is in transmission connection with the output end of an air door motor 9, the position of the air door 608 is matched with an air door hole 64 on the hulling chamber mounting plate 41, and the air door motor 9 is used for driving the air door 608 to rotate, so that the opening of the air door hole 64 can be adjusted.
In this scheme, chaff wind channel 7 is inhaled to rice milling room includes tuber pipe I71, blast gate I72, and tuber pipe I71 one end links to each other with the III 63 middle part through-holes of trickling plate, and the other end links to each other with rice mill 51 of rice milling equipment 5, and blast gate I72 is installed on tuber pipe I71.
In this scheme, rice bran separation system 8 includes air valve II 81, fan 82, tuber pipe II 83, cyclone 84, fan 82 fixed mounting is on rice huller room mounting panel 41, fan 82's entry aligns with air door hole 64 on rice huller room mounting panel 41, cyclone 84 fixed mounting is in frame 1, fan 82's export and cyclone 84's entry are connected respectively at II 83 both ends of tuber pipe, air valve II 81 is installed on II 83 of tuber pipe, fan 82 includes the fan cavity, and fan impeller, fan impeller passes through the rotatable setting of fan main shaft in the fan cavity, fan main shaft wears out behind a fan cavity side and passes through two transmissions of belt with the output shaft of main motor 85 and be connected, main motor 85 connects 220V power electricity.
In the scheme, the control system comprises a single chip microcomputer, a sensor, an air door motor 9, an air door motor driver, a display, a memory, a relay and an external power supply; the single chip microcomputer, the memory and the display are arranged on the control panel, the air door motor 9 is connected with the display through the single chip microcomputer, and the single chip microcomputer is also connected with the memory; i.e., the degree of opening and closing of the damper 608 is controlled by the display. The single chip microcomputer is connected with the air door motor 9 through an air door motor driver to drive the wind energy motor 9; the single chip microcomputer is also respectively connected with a sensor, a relay and a storage, and the relay is connected with the main motor 85 to drive the fan; the sensor is arranged on the rice hulling chamber mounting plate 41 and used for detecting the position of the air door 608, and further determining the opening degree of the air door 608; meanwhile, the display is also connected with a memory, and the memory stores the opening and closing degree of the air door 608 when the air door motor 9 rotates to different angles. When the opening and closing degree of the damper 608 is required to be adjusted, the adjustment can be called through a display screen of the display. This is a common control for the electrical domain. The external power supply provides power for the whole control system.
Preferably, the single chip microcomputer is STM32F103VET6, the air door motor 9 is a stepping motor, and the sensor is a laser correlation sensor.
In this scheme, the display is the serial ports screen, still is used for showing information such as air door 608 aperture to and the suggestion of equipment fresh rice surplus.
The purpose that this scheme wants to reach is that how much the rice in hopper 2 gets into rice huller 4 and rice milling device 5 is different, and the rice husk that the rice processing produced also differs with the volume of chaff, needs to adopt suitable air door 608 aperture, at this moment with manual regulation and establish the air door 608 aperture database of the different operating modes of fresh rice machine. (i.e., for different grain conditions, the last opening and closing degree of the corresponding air door 608 is established, and the data of the opening and closing degree is recorded in the memory, and when a certain grain is shelled, the data in the memory is directly selected and called through the display screen).
As shown in fig. 1-6, the double-duct bran suction device of the fresh rice machine manually adjusts the working principle: when the fresh rice machine is started to process rice, the opening degree initialization work of the air door 608 is carried out, the sensor feeds back the position of the air door 608, if the air door 608 is closed, the single chip microcomputer calls air door data in the memory, the air door motor 9 is controlled to open the air door 608 through the air door motor driver, if the air door 608 is not closed, the single chip microcomputer firstly closes the air door 608 and then opens the air door 608 through the air door data, when the opening degree of the discharging opening of the discharging device 3 is larger, a debugger manually adjusts the position of the air door 608 on a display screen of the display, the opening degree of the air door hole 64 is increased, the rice bran separation effect is observed, the opening degree of the air door hole 64 and the opening degree of the discharging opening of the discharging device 3 are recorded through continuously adjusting the position of the air door 608 until the rice bran separation effect is satisfactory, and a database of the opening degree (working condition) of the discharging opening degree of the discharging opening of the discharging device 3 and the air door hole 64 is established through debugging.
After the database of the opening degree of the air door hole 64 under different working conditions of the fresh rice machine is established, in practical application, the control system utilizes the opening degree data of the air door hole 64 to carry out automatic adjustment.
The double-air-duct bran suction device automatic adjustment working principle of the fresh rice machine is that when the fresh rice machine is started to process rice, the opening degree of the air door hole 64 is initialized by utilizing the opening degree of the feed opening of the feeding device 3, the opening degree of the air door hole 64 is automatically adjusted along with the opening degree of the feed opening of the feeding device 3 all the time along with the processing, the opening degree of the air door hole 64 is kept at a proper opening position, and after the processing is finished, the air door hole 64 is automatically closed.
In the scheme, the bottom of the blanking device 3 is a blanking port, and an L-shaped opening and closing door 93 and a correlation light eye E94 for detecting the position of the L-shaped opening and closing door 93 are arranged at the blanking port; the L-shaped opening and closing door 93 is connected to an opening and closing motor 95, and the opening and closing motor 95 is electrically connected to a single chip microcomputer (not shown) through an opening and closing motor driver. The opening and closing of the L-shaped opening and closing door 93 is controlled by an opening and closing motor 95, and the opening degree of the discharge opening of the discharging device 3 is adjusted.
It should be noted that the settings of the single chip, the memory, and the display screen are equivalent to a micro computer operating system, and are a common control method in the electrical field.
The above embodiments only represent preferred embodiments, and the description is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (10)
1. The utility model provides a chaff device is inhaled to two wind channels of bright rice machine which characterized in that:
comprises a hopper (2) arranged on a frame (1), a rice huller (4), a rice milling device (5) and a rice bran separation system (8); the rice hulling device (4) is arranged below the hopper (2) and communicated with the bottom of the hopper;
the rice milling device (5) is arranged below the rice hulling device (4), and the top feeding end of the rice milling device (5) is communicated with the bottom discharging end of the rice hulling device (4);
a rice hulling chamber rice chaff absorbing air duct (6) is further arranged on the right side of the rice hulling device (4), and a rice chaff absorbing opening at the bottom of the rice hulling chamber rice chaff absorbing air duct (6) is communicated with a discharge end at the bottom of the rice hulling device (4);
the rice milling device (5) is also communicated with the middle part of a rice hulling chamber bran absorbing air duct (6) through a rice milling chamber bran absorbing air duct (7);
the rice huller room rice chaff absorbing air duct (6) is communicated with the rice bran separation system (8) through an air door hole (64).
2. The double-air-duct bran suction device of the fresh rice machine as claimed in claim 1, which is characterized in that: the rice hulling device (4) comprises a rice hulling chamber mounting plate (41), a rice hulling chamber cover plate (42) and a rice hulling chamber frame;
the front and back surfaces of the rice hulling chamber frame are respectively connected with a rice hulling chamber mounting plate (41) and a rice hulling chamber cover plate (42) to jointly form a rice hulling chamber, and a rice hulling rubber roller component for hulling rice is mounted on the rice hulling chamber mounting plate (41) inside the rice hulling chamber.
3. The double-air-duct bran suction device of the fresh rice machine as claimed in claim 2, characterized in that: the rice bran separation system (8) comprises a fan (82), an air pipe II (83) and a cyclone separator (84);
the fan (82) is fixedly arranged on the rice hulling chamber mounting plate (41), and the cyclone separator (84) is fixedly arranged on the rack (1) and is positioned below the fan (82);
the inlet end of the fan (82) is aligned with the air door hole (64) on the rice hulling chamber mounting plate (41), the outlet end of the fan (82) is communicated with one end of an air pipe II (83), and the other end of the air pipe II (83) is communicated with the top of the cyclone separator (84);
and an air valve II (81) is further mounted on the air pipe II (83).
4. The double-air-duct bran suction device of the fresh rice machine as claimed in claim 3, wherein:
the rice milling chamber bran suction air duct (7) comprises an air duct I (71), one end of the air duct I (71) is communicated with the rice milling chamber bran suction air duct (6), and the other end of the air duct I (71) is communicated with a rice milling machine (51) of the rice milling device (5);
an air valve I (72) is further arranged on the air pipe I (71);
the rice hulling chamber chaff absorbing air duct (6) is formed by enclosing a plurality of flowing plates and arc plates (65) which are arranged between a rice hulling chamber mounting plate (41) and a rice hulling chamber cover plate (42);
the air pipe I (71) is communicated with a through hole in the middle of the flowing plate at the lower side of the chaff absorbing air duct (6) of the rice hulling chamber.
5. The double-air-duct bran suction device of the fresh rice machine as claimed in claim 4, wherein: the air door hole (64) is also provided with an air door (608);
the air door (608) comprises a rotary shaft (609), one end of the rotary shaft (609) is rotatably and vertically arranged on the rice hulling chamber mounting plate (41), the other end of the rotary shaft (609) vertically penetrates through the rice hulling chamber cover plate (42) and then is in transmission connection with an output shaft of the air door motor (9), and the air door motor (9) is mounted on the rice hulling chamber cover plate (42).
6. The double-air-duct bran suction device of the fresh rice machine as claimed in claim 5, wherein: the double-air-duct bran suction device of the fresh rice machine also comprises a control system;
the control system comprises a single chip microcomputer, a sensor, an air door motor driver, a display and a memory, wherein the single chip microcomputer is respectively in signal connection with the sensor, the air door motor driver, the display and the memory;
the air door motor driver is electrically connected with the air door motor (9);
the sensor is arranged on the rice hulling chamber mounting plate (41) to detect the position of the air door (608).
7. The double-air-duct bran suction device of the fresh rice machine as claimed in claim 6, wherein: the lower end of the hopper (2) is also provided with a blanking device (3) capable of adjusting the opening of a blanking port, and the hopper (2) is communicated with a feeding port at the top end of the rice hulling device (4) through the blanking device (3);
the bottom of the blanking device (3) is provided with a blanking port, and an L-shaped opening and closing door (93) and an opposite light eye E (94) are arranged at the blanking port; the L-shaped opening and closing door (93) is connected with an opening and closing motor (95);
the opening and closing motor (95) is electrically connected with the opening and closing motor driver.
8. A double-air-duct bran suction device for a fresh rice machine as claimed in any one of claims 5 or 6, wherein: the rice milling device (5) comprises a rice mill (51), wherein a belt pulley is arranged at one end of the rice mill (51), and the belt pulley is connected with an output shaft of a main motor (85) through a belt.
9. The double-air-duct bran suction device of the fresh rice machine as claimed in claim 8, wherein: the fan (82) comprises a fan cavity and a fan impeller, the fan impeller is arranged in the fan cavity through a fan main shaft, and the fan main shaft penetrates out of one side face of the fan cavity and then is connected with an output shaft of the main motor (85) through a belt II.
10. The double-air-duct bran suction device for the fresh rice machine as claimed in claim 6, wherein: the control system also comprises a relay which is electrically connected with the single chip microcomputer and the main motor (85) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220205543.7U CN218012883U (en) | 2022-01-25 | 2022-01-25 | Double-air-duct bran suction device of fresh rice machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220205543.7U CN218012883U (en) | 2022-01-25 | 2022-01-25 | Double-air-duct bran suction device of fresh rice machine |
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| CN218012883U true CN218012883U (en) | 2022-12-13 |
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| CN202220205543.7U Active CN218012883U (en) | 2022-01-25 | 2022-01-25 | Double-air-duct bran suction device of fresh rice machine |
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