CN111744581A

CN111744581A - Rice mill

Info

Publication number: CN111744581A
Application number: CN202010482453.8A
Authority: CN
Inventors: 南存鹤
Original assignee: Wenzhou University
Current assignee: Wenzhou University
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2020-10-09
Anticipated expiration: 2040-05-29
Also published as: CN111744581B

Abstract

The invention discloses a rice mill, which adopts the technical scheme that the rice mill comprises a feeding device for feeding, wherein the feeding device comprises a feeding hopper, a feeding pipeline and a filtering disc, the feeding hopper is of a funnel-shaped structure, one end of an opening of the feeding hopper is connected to one end of the feeding pipeline, a sliding chute is arranged on the inner wall of one side, close to the feeding hopper, of the feeding pipeline, the sliding chute extends in the circumferential direction of the inner wall of the feeding pipeline, two sliding blocks are arranged in the sliding chute in a sliding manner, the two sliding blocks are symmetrically arranged about the axis of the feeding pipeline, the outer wall of the filtering disc extends into the sliding chute, a sieve hole which is through in the thickness direction and is used for screening rice is arranged on the filtering disc, an elastic part is arranged on each sliding block, two ends of the elastic part are respectively arranged on the filtering disc and the sliding blocks, and a, the rice mill can filter impurities and ensure the falling speed of rice.

Description

Rice mill

Technical Field

The invention relates to the field of articles for daily use, in particular to a rice mill.

Background

The rice sold in the market is rolled by a large special rice mill in a rice mill, the large rice mill has the characteristics of high efficiency and low energy, but the rice loses more nutrition through multi-layer processing in the process of milling grains and making rice in the rice mill. In addition, the shelf life of the grains after husking becomes short, and the mouthfeel of the grains begins to deteriorate rapidly as the storage time is prolonged. Therefore, the household grain milling machine is provided, so that the grains can be milled for use at present, the nutritional value and the dietary mouthfeel of the rice are preserved, and the domestic grain milling machine becomes a health requirement of families in modern cities.

However, rice often contains impurities, such as large stones, which can damage the internal structure of the roller without being screened, resulting in the life of the roller.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a rice mill which can filter impurities and ensure the falling speed of rice.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a rice mill, includes the feed arrangement who is used for the feeding, its characterized in that: the feeding device comprises a feeding hopper, a feeding pipeline and a filtering disc, wherein the feeding hopper is of a funnel-shaped structure, one open end of the feeding hopper is connected to one end of the feeding pipeline, a sliding groove is formed in the inner wall, close to one side of the feeding hopper, of the feeding pipeline, the sliding groove extends in the circumferential direction of the inner wall of the feeding pipeline, two sliding blocks are arranged in the sliding groove in a sliding mode, the two sliding blocks are symmetrically arranged on the axis of the feeding pipeline, the outer wall of the filtering disc extends into the sliding groove, a sieve mesh which is through in the thickness direction and used for screening rice is arranged on the filtering disc, an elastic part is arranged on each sliding block, and two ends of each elastic part are respectively;

the feeding device is characterized by further comprising a vibrating assembly, the vibrating assembly comprises a mounting seat, a mounting block, a first rotating motor, a touch plate, an expansion piece, two touch bosses, touch rods and touch assemblies, the mounting seat is arranged on the inner wall of the feeding pipeline and is positioned on one side, away from the feeding hopper, of the filter plate, the mounting block is positioned between the filter plate and the mounting seat and is arranged on the filter plate, a groove is formed in one side, away from the filter plate, of the mounting block, the groove extends in the radial direction of the filter plate, the first rotating motor is arranged in the mounting seat and comprises an output shaft, the output shaft extends towards the mounting seat to the center of the groove, the touch plate is positioned in the groove and is fixedly sleeved on the output shaft, the expansion piece is clamped on the outer wall of the touch plate, the two touch bosses are positioned on two sides of the output shaft and are arranged on one side, away from the mounting seat, along the extending direction of the groove, the utility model discloses a filter assembly, including filter disc, conflict boss, expansion piece, supporting rod, supporting shaft, output shaft, supporting disc, the one side of conflict boss towards the mount pad is provided with first inclined plane, first inclined plane is used for contradicting with the expansion piece, the conflict pole is located the filter disc towards the one side of feeder hopper, and its one end is connected in the axle of filter disc, and the other end extends to feed channel's inner wall, the conflict subassembly sets up on feed channel's inner wall, and this conflict subassembly is used for contradicting with the conflict pole, and when conflict subassembly and conflict pole conflict are contradicted, first rotating electrical machines start, and the output shaft drives the conflict dish and rotates, and the supporting disc drives the expansion piece earlier and expands to the recess both ends, and the expansion.

As a further improvement of the present invention, the abutting plate comprises two protruding portions, the two protruding portions are symmetrically disposed about the axis of the abutting plate, the expanding member comprises two abutting blocks and two first springs, the two abutting blocks are disposed on two sides of the output shaft and distributed along the extending direction of the groove, the two first springs are respectively connected to the two abutting blocks, the two first springs and the two abutting blocks enclose a contact position for accommodating the abutting plate, the first springs are used for keeping the abutting blocks in contact with the abutting plate, one side of the abutting block, which is far away from the mounting base, is provided with a second inclined surface for contacting with the first inclined surface, when the contact assembly contacts with the abutting rod, the first rotating motor is started, the output shaft drives the abutting plate to rotate, when the protruding portions rotate to contact with the abutting blocks, the two abutting blocks respectively move to two ends of the groove, under the contact of the first inclined surface and the second inclined surface, drive the filter plate and remove to the feeder hopper, the elastic component deformation, conflict dish continues to rotate and breaks away from to the protruding portion with the conflict piece, and two conflict pieces remove to the recess center, and the conflict piece breaks away from with first inclined plane, and the elastic component resumes deformation, drives the filter plate and keeps away from the feeder hopper and removes.

As a further improvement of the present invention, the abutting assembly includes a second rotating motor, a cam, a baffle, a second spring and a mounting plate, the second rotating motor is disposed on an inner wall of the feeding pipe, an output end of the second rotating motor extends along a radial direction of the feeding pipe, the cam is eccentrically connected to an output end of the second rotating motor, the mounting plate is disposed on the inner wall of the feeding pipe, the mounting plate is provided with a through hole penetrating in a direction of the cam, the baffle is slidably connected to the through hole, two ends of the second spring are respectively connected to the mounting plate and the baffle, the second spring is used for keeping the baffle abutting against the cam, one end of the baffle, away from the cam, is provided with a abutting portion for abutting against the abutting rod, the cam includes a protrusion, when the protrusion rotates to abut against the baffle, the second spring compresses, the baffle moves back to the cam, the stopping part is contradicted with the conflict pole, and first rotating electrical machines starts, drives the filter disc and shakes from top to bottom, and when rotating to the one side of keeping away from the baffle until the bulge, the baffle removed to the cam, and stopping part and conflict pole break away from, and first rotating electrical machines drives the touch multitouch, installation piece and the filter disc is rotatory, be provided with the brush-holder stud on charge-in pipeline's the inner wall, the brush-holder stud is located the one side that the filter disc is close to the feeder hopper, the brush-holder stud extends the setting along feedstock channel's radial direction, be provided with the brush hair that is used for with the filter disc conflict on the.

As a further improvement of the invention, a pulley is arranged on one surface of the interference block facing the mounting seat.

As a further improvement of the invention, one surface of the interference block facing the output shaft is provided with a positioning groove for accommodating the interference disc.

The invention has the beneficial effects that: according to the invention, by arranging the filter disc, when rice is fed, hard impurities with a volume larger than that of the rice are stopped on the filter disc, and then the filter disc is vibrated by the vibration device to accelerate the filtering speed of the rice, so that the filtering speed of the rice is ensured while the impurity removing effect is achieved, some impurities originally blocking the sieve pores are slowly moved out of the sieve pores in the vibration process of the filter disc, so that the rice can continuously enter the channel through the sieve pores, or when the rice is filtered quickly, some rice always stops at the position of the filter disc without the sieve pores, and at the moment, all the rice can be ensured to fall into the feeding channel through the sieve pores by the vibration of the filter disc.

Drawings

FIG. 1 is a schematic diagram of the present invention.

Fig. 2 is a sectional view of the interior of the feeding device.

Fig. 3 is an internal sectional view of the feeding device in another state.

Fig. 4 is a schematic cross-sectional view of a feed conduit.

Fig. 5 is an assembly view of the contact block, the second spring and the contact plate.

Fig. 6 is a schematic view of the collision component.

Reference numerals: 1. a feeding device; 11. a feed hopper; 12. a feed conduit; 120. a chute; 121. a slider; 13. a filter tray; 130. screening holes; 14. an elastic member; 2. a vibration assembly; 21. a mounting seat; 22. mounting blocks; 220. a groove; 23. a first rotating electrical machine; 231. an output shaft; 24. a touch pad; 241. a protrusion; 25. an expansion member; 251. a contact block; 2510. positioning a groove; 2511. a second inclined plane; 2512. a pulley; 252. a first spring; 26. abutting against the boss; 261. a first inclined plane; 27. a touch bar; 28. a collision component; 281. a second rotating electrical machine; 282. a cam; 2821. a projection; 283. a baffle plate; 2831. a resisting part; 284. a second spring; 285. mounting a plate; 29. a brush rod.

Detailed Description

The invention will be further described in detail with reference to the following examples, which are given in the accompanying drawings.

Referring to fig. 1 to 6, the rice mill of the present embodiment includes a feeding device 1 for feeding, and is characterized in that: the feeding device 1 comprises a feeding hopper 11, a feeding pipeline 12 and a filtering disc 13, wherein the feeding hopper 11 is of a funnel-shaped structure, one open end of the feeding hopper 11 is connected to one end of the feeding pipeline 12, a sliding chute 120 is formed in the inner wall, close to one side of the feeding hopper 11, of the feeding pipeline 12, the sliding chute 120 extends in the circumferential direction of the inner wall of the feeding pipeline 12, two sliding blocks 121 are arranged in the sliding chute 120 in a sliding mode, the two sliding blocks 121 are symmetrically arranged about the axis of the feeding pipeline 12, the outer wall of the filtering disc 13 extends into the sliding chute 120, a sieve hole 130 which is through in the thickness direction and used for screening rice is formed in the filtering disc 13, an elastic part 14 is arranged on each sliding block 121, and two ends of each elastic part 14 are respectively arranged on the;

still be provided with vibrations subassembly 2, vibrations subassembly 2 includes mount pad 21, installation piece 22, first rotating electrical machines 23, conflict dish 24, expansion piece 25, two conflict bosss 26, conflict pole 27 and conflict subassembly 28, be provided with mount pad 21 on the inner wall of charge-in pipeline 12, this mount pad 21 is located the filter disc 13 and keeps away from one side of feeder hopper 11, installation piece 22 is located between filter disc 13 and the mount pad 21 and sets up on filter disc 13, the one side that filter disc 13 was kept away from to installation piece 22 is provided with recess 220, recess 220 extends along the radial direction of filter disc 13 and sets up, first rotating electrical machines 23 sets up in mount pad 21, first rotating electrical machines 23 includes output shaft 231, and this output shaft 231 extends to recess 220 central point to mount pad 21 and puts, conflict dish 24 is located recess 220 and fixed cover is established on output shaft 231, the expansion piece 25 is clamped on the outer wall of the abutting disc 24, the two abutting bosses 26 are located on two sides of the output shaft 231 and are arranged on one side of the groove 220, which is opposite to the mounting seat 21, along the extending direction of the groove 220, the abutting boss 26 is provided with a first inclined surface 261 on one side, which is opposite to the mounting seat 21, the first inclined surface 261 is used for abutting against the expansion piece 25, the abutting rod 27 is located on one side, which is opposite to the feed hopper 11, of the filter disc 13, one end of the abutting rod is connected to the axial center of the filter disc 13, the other end of the abutting rod extends towards the inner wall of the feed channel, the abutting component 28 is arranged on the inner wall of the feed channel, the abutting component 28 is used for abutting against the abutting rod 27, when the abutting component 28 abuts against the abutting rod 27, the first rotating motor 23 is started, the output shaft 231 drives the abutting disc 24 to rotate, the abutting disc 24 drives the expansion piece 25 to expand towards two ends of the, drive filter disc 13 and remove to feeder hopper 11, elastic component 14 deformation drives extension piece 25 behind the conflict dish 24 and contracts to recess 220 center, and extension piece 25 breaks away from with first inclined plane 261, and elastic component 14 resumes deformation, drives filter disc 13 and keeps away from feeder hopper 11 and removes.

In the embodiment, the extension directions of the installation block 22 and the installation base 21 are the same, the volume of the installation block 22 and the installation base 21 is smaller, so as to reduce the specific gravity of the occupied area on the cross section of the feeding pipeline 12, the cross section area of the installation base 21 is smaller than that of the installation block 22, so as to prevent rice from falling onto the installation base 21 when falling, the elastic member 14 can select elastic structures such as springs, and the like, the embodiment adopts a screening method, impurities are separated by virtue of the sieve pores 130 mainly according to the differences of the width, the thickness, the length and the shape of rice and magazines, the diameter of the sieve pores 130 is controlled within the range of 2mm-5mm, in the initial state, the touch rod 27 touches the touch component 28, a plurality of magnets can be arranged on the touch rod 27 so as to adsorb the ferromagnetic impurities in the rice, the ferromagnetic impurities are prevented from entering the rice mill to damage, the working process of the embodiment is as follows: pouring a plurality of grains of rice into the feed hopper 11, wherein the rice passes through the sieve pores 130 on the filter disc 13, while hard impurities such as stones mixed in the rice stay in the feed hopper 11, starting the first rotating motor 23, fixing the contact disc 24 fixedly sleeved on the output shaft 231 of the first rotating motor 23 to rotate, the contact disc 24 firstly drives the expansion piece 25 to expand towards the two ends of the groove 220, the expansion piece 25 moves and simultaneously collides with the first inclined surface 261, the filter disc 13 moves towards the feed hopper 11, the elastic piece 14 deforms, the expansion piece 25 is driven to contract towards the center of the groove 220 after the collision disc 24, the elastic piece 14 recovers deformation, the expansion piece 25 is separated from the first inclined surface 261, the filter disc 13 is driven to move away from the feed hopper 11, the output shaft 231 continues to rotate, the filter disc 13 is driven to vibrate up and down, some impurities originally blocking the sieve pores 130 are slowly removed from the sieve pores 130 in the vibration process of the filter disc 13, so that the rice can continuously enter the, or when the rice is filtered, some rice always stays at the position of the filter disc 13 where the sieve holes 130 are not arranged, and at the moment, all the rice can fall into the feeding channel through the sieve holes 130 by vibrating the filter disc 13. This embodiment is through setting up filter disc 13, can be greater than the stereoplasm impurity stagnation of rice on filter disc 13 with the volume, and rethread vibrator for filter disc 13 can shake, in order to accelerate the filter rate of rice, when playing the edulcoration effect, has guaranteed the filter rate of rice.

As a modified specific embodiment, the contact disc 24 includes two protruding portions 241, the two protruding portions 241 are symmetrically disposed about the axis of the contact disc 24, the expansion member 25 includes two contact blocks 251 and two first springs 252, the two contact blocks 251 are disposed on two sides of the output shaft 231 and distributed along the extending direction of the groove 220, the two first springs 252 are respectively connected to the two contact blocks 251, the two first springs 252 and the two contact blocks 251 form an abutting position for accommodating the contact disc 24, the first spring 252 is used for keeping the contact blocks 251 abutting against the contact disc 24, a second inclined surface 2511 for abutting against the first inclined surface 261 is disposed on a surface of the contact block 251 away from the mounting base 21, when the contact assembly 28 abuts against the contact rod 27, the first rotating motor 23 is started, the output shaft 231 drives the contact disc 24 to rotate, the protruding portions 241 rotate until the contact blocks 251 abut against, the two contact blocks 251 move towards the two ends of the groove 220 respectively, under the contact of the first inclined surface 261 and the second inclined surface 2511, the filter disc 13 is driven to move towards the feed hopper 11, the elastic part 14 deforms, the contact disc 24 continues to rotate until the protruding part 241 is separated from the contact blocks 251, the two contact blocks 251 move towards the center of the groove 220, the contact blocks 251 are separated from the first inclined surface 261, and the elastic part 14 recovers deformation and drives the filter disc 13 to move away from the feed hopper 11.

Through the technical scheme: in the initial state, the abutting assembly 28 abuts against the abutting rod 27, the protruding portion 241 of the abutting disc 24 does not abut against the abutting block 251, when the first rotating electrical machine 23 is started, the output shaft 231 drives the abutting disc 24 to rotate, the protruding portion 241 rotates to abut against the abutting block 251, the two abutting blocks 251 are driven to move towards the two ends of the groove 220 respectively, under the abutting of the first inclined surface 261 and the second inclined surface 2511, the filter disc 13 is driven to move towards the feed hopper 11, the elastic member 14 deforms, the abutting disc 24 continues to rotate until the protruding portion 241 is separated from the abutting block 251, the two abutting blocks 251 move towards the center of the groove 220, the abutting block 251 is separated from the first inclined surface 261, the elastic member 14 recovers deformation, the filter disc 13 is driven to move away from the feed hopper 11, the abutting disc 24 continuously rotates along with the output shaft 231, the expansion disc 13 is driven to vibrate up and down, the expansion member 25 described in this embodiment has a simple structure and occupies a small volume, and is accommodated in the groove 220, the influence on the rice is small, and the rice does not fall into the groove 220 in the falling process after passing through the sieve holes 130, thereby influencing the work of the expansion piece 25.

As a modified specific embodiment, the interference assembly 28 includes a second rotating motor 281, a cam 282, a baffle 283, a second spring 284 and a mounting plate 285, the second rotating motor 281 is disposed on the inner wall of the feeding pipe 12, an output end of the second rotating motor 281 extends along the radial direction of the feeding pipe 12, the cam 282 is eccentrically connected to the output end of the second rotating motor 281, the mounting plate 285 is disposed on the inner wall of the feeding pipe 12, the mounting plate 285 is provided with a through hole penetrating in the direction of the cam 282, the baffle 283 is slidably connected to the through hole, two ends of the second spring 284 are respectively connected to the mounting plate 285 and the baffle 283, the second spring 284 is used for keeping the baffle 283 in interference with the cam 282, an end of the baffle 283 away from the cam 282 is provided with a resisting part 2831 for resisting the interference with the interference rod 27, the cam 282 includes a protruding part 2821, when protrusion 2821 rotates to contradict with baffle 283, the compression of second spring 284, baffle 283 moves to cam 282 dorsad, and department of resist 2831 contradicts with conflict pole 27, and first rotating electrical machines 23 starts, drives filter disc 13 and shakes from top to bottom, and when protrusion 2821 rotated to the one side of keeping away from baffle 283, baffle 283 removed to cam 282, department of resist 2831 breaks away from with conflict pole 27, and first rotating electrical machines 23 drives and props touch block 251, installation piece 22 and filter disc 13 rotation, be provided with brush-holder stud 29 on feed channel's the inner wall, brush-holder stud 29 is located one side that filter disc 13 is close to feeder hopper 11, brush-holder stud 29 extends the setting along feed channel's radial direction, be provided with the brush hair that is used for contradicting with filter disc 13 on brush-holder stud 29.

Through the above technical solution, the abutting assembly 28 and the abutting rod 27 in this embodiment have two states, when the protruding portion 2821 rotates to a side close to the baffle 283 and the protruding portion 2821 rotates to a side far from the baffle 283, in this embodiment, in an initial state, the protruding portion 2821 is located at a side close to the baffle 283 and abuts against the baffle 283, the first rotating electrical machine 23 is started, as described above, the filter disc 13 is driven to vibrate up and down, until the protruding portion 241 rotates to a side far from the baffle 283, the baffle 283 moves towards the cam 282, the abutting portion 2831 is separated from the abutting rod 27, at this time, the output shaft 231 of the first rotating electrical machine 23 continues to rotate, the abutting disc 24 fixedly disposed on the output shaft 231, the expanding member 25 clamped on the abutting disc 24, and the mounting block 22 accommodating the expanding member 25 rotate, since the baffle 283 releases the blocking of the abutting rod 27, the filter disc 13 also rotates along with the mounting block 22, the filter tray 13 is rotated and the brush bar 29 is rotated along the filter tray 13, so that the impurities clogged in the sieve holes 130 can be separated from the sieve holes 130 by the bristles of the brush bar 29, and the filter tray 13 is rotated in a state suitable for a situation where rice remains little compared to a state where the filter tray 13 is shaken all the time, so that rice can fall from the sieve holes 130 more quickly by "spreading" the rice by the brush bar 29.

As a modified specific embodiment, a pulley 2512 is disposed on a surface of the contact block 251 facing the mounting seat 21.

By arranging the pulley 2512, when the contact block 251 moves, the friction force with the mounting base 21 is small, and the loss is small.

As a specific embodiment of the improvement, a surface of the contact block 251 facing the output shaft 231 is provided with a positioning groove 2510 for accommodating the contact disc 24.

Through the technical scheme, the positioning groove 2510 enables the contact block 251 to be not easy to move in the vertical direction, so that the first inclined surface 261 of the contact block 251 and the second inclined surface 2511 of the interference boss 26 can be kept in interference, and the running stability of the device is ensured.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. A rice mill, including feed arrangement (1) that is used for the feeding, its characterized in that: the feeding device (1) comprises a feeding hopper (11), a feeding pipeline (12) and a filter disc (13), the feed hopper (11) is of a funnel-shaped structure, one open end of the feed hopper (11) is connected with one end of the feed pipeline (12), the inner wall of the feeding pipeline (12) close to one side of the feeding hopper (11) is provided with a chute (120), the chute (120) extends along the circumferential direction of the inner wall of the feeding pipeline (12), two sliding blocks (121) are arranged in the sliding groove (120) in a sliding manner, the two sliding blocks (121) are symmetrically arranged about the axis of the feeding pipeline (12), the outer wall of the filter disc (13) extends into the sliding groove (120), the filter disc (13) is provided with a sieve pore (130) which is through in the thickness direction and used for screening rice, an elastic piece (14) is arranged on the sliding block (121), and two ends of the elastic piece (14) are respectively arranged on the filter disc (13) and the sliding block (121);

the vibration device is further provided with a vibration component (2), the vibration component (2) comprises a mounting seat (21), a mounting block (22), a first rotating motor (23), a collision disc (24), an expansion piece (25), two collision bosses (26), a collision rod (27) and a collision component (28), the mounting seat (21) is arranged on the inner wall of the feeding pipeline (12), the mounting seat (21) is positioned on one side, away from the feeding hopper (11), of the filter disc (13), the mounting block (22) is positioned between the filter disc (13) and the mounting seat (21) and arranged on the filter disc (13), a groove (220) is formed in one surface, away from the filter disc (13), of the mounting block (22), the groove (220) extends along the radial direction of the filter disc (13), the first rotating motor (23) is arranged in the mounting seat (21), the first rotating motor (23) comprises an output shaft (231), this output shaft (231) extends to recess (220) central point to mount pad (21) and puts, touch panel (24) are located recess (220) and fixed cover is established on output shaft (231), extension piece (25) joint is on the outer wall of touch panel (24), two conflict boss (26) are located output shaft (231) both sides, and set up on the one side of this recess (220) dorsad mount pad (21) along recess (220) extending direction, conflict boss (26) are provided with first inclined plane (261) towards the one side of mount pad (21), first inclined plane (261) are used for contradicting with extension piece (25), conflict pole (27) are located filter disc (13) towards the one side of feeder hopper (11), its one end is connected on the axle center of disc (13), the other end extends to feed channel's inner wall, conflict subassembly (28) set up on feed channel's inner wall, this conflict subassembly (28) are used for contradicting with conflict pole (27), when conflict subassembly (28) contradict with conflict pole (27), first rotating electrical machines (23) start, output shaft (231) drive and touch panel (24) rotate, touch panel (24) drive earlier expansion piece (25) to the expansion of recess (220) both ends, expansion piece (25) contradict with first inclined plane (261), drive filter disc (13) and remove to feeder hopper (11), elastic component (14) deformation, drive expansion piece (25) to recess (220) central contraction behind touch panel (24), expansion piece (25) break away from with first inclined plane (261), elastic component (14) resume deformation, drive filter disc (13) and keep away from feeder hopper (11) and remove.

2. A rice mill as claimed in claim 1, wherein: the contact disc (24) comprises two protruding parts (241), the two protruding parts (241) are symmetrically arranged with the axis of the contact disc (24), the expansion piece (25) comprises two contact blocks (251) and two first springs (252), the two contact blocks (251) are located on two sides of the output shaft (231) and distributed along the extending direction of the groove (220), the two first springs (252) are respectively connected to the two contact blocks (251), the two first springs (252) and the two contact blocks (251) enclose to form an abutting position for accommodating the contact disc (24), the first springs (252) are used for keeping the contact blocks (251) abutting against the contact disc (24), one surface of the contact block (251) far away from the mounting seat (21) is provided with a second inclined surface (2511) for abutting against the first inclined surface (261), and when the abutting assembly (28) abuts against the contact rod (27), the first rotating motor (23) is started, the output shaft (231) drives the abutting disc (24) to rotate, the protruding portion (241) rotates to be abutted against the abutting block (251), the two abutting blocks (251) move towards two ends of the groove (220) respectively, under abutting of the first inclined surface (261) and the second inclined surface (2511), the filter disc (13) is driven to move towards the feed hopper (11), the elastic piece (14) deforms, the abutting disc (24) continues to rotate until the protruding portion (241) is separated from the abutting block (251), the two abutting blocks (251) move towards the center of the groove (220), the abutting block (251) is separated from the first inclined surface (261), the elastic piece (14) restores to deform, and the filter disc (13) is driven to move away from the feed hopper (11).

3. A rice mill as claimed in claim 2, wherein: conflict subassembly (28) include second rotating electrical machines (281), cam (282), baffle (283), second spring (284) and mounting panel (285), second rotating electrical machines (281) set up on the inner wall of feed duct (12), the radial direction of feed duct (12) is extended along the output of second rotating electrical machines (281), cam (282) eccentric connection is on the output of this second rotating electrical machines (281), mounting panel (285) set up on the inner wall of feed duct (12), mounting panel (285) are provided with the through-hole that link up to cam (282) direction, baffle (283) and through-hole sliding connection, second spring (284) both ends are connected respectively on mounting panel (285) and baffle (283), second spring (284) are used for keeping baffle (283) and cam (282) conflict, the one end that baffle (283) kept away from cam (282) is provided with the department of contradicting that is used for contradicting with conflict pole (27) (2831) The cam (282) comprises a protruding part (2821), when the protruding part (2821) rotates to abut against the baffle (283), the second spring (284) is compressed, the baffle (283) moves back to the cam (282), the abutting part (2831) abuts against the abutting rod (27), the first rotating motor (23) is started to drive the filter disc (13) to vibrate up and down, until the protruding part (2821) rotates to one side far away from the baffle (283), the baffle (283) moves towards the cam (282), the abutting part (2831) is separated from the abutting rod (27), the first rotating motor (23) drives the abutting block (251), the mounting block (22) and the filter disc (13) to rotate, a brush rod (29) is arranged on the inner wall of the feeding pipeline (12), the brush rod (29) is positioned on one side, close to the feeding hopper (11), of the brush rod (29) extends along the radial direction of the feeding channel, the brush rod (29) is provided with bristles which are used for abutting against the filter disc (13).

4. A rice mill according to claim 2, wherein the side of the abutment block (251) facing the mounting seat (21) is provided with a pulley (2512).

5. A rice mill according to claim 2 or 4, wherein the side of the contact block (251) facing the output shaft (231) is provided with a locating slot (2510) for receiving the contact disc (24).