CN110614140A - Rice milling component capable of being subjected to pre-crushing treatment - Google Patents

Abstract

The invention provides a rice milling component capable of pre-crushing treatment, which includes a crushing tank (201), a conical lower grinding disc (204) is coaxially arranged in the grinding tank (201), and the inner circular surface of the lower grinding disc (204) is The size of the opening increases gradually from bottom to top in the vertical direction. A main shaft (206) is coaxially arranged in the crushing tank (201), and a conical upper grinding disc (207) is coaxially fixed on the main shaft (206). The taper of the upper grinding disc (207) and the lower grinding disc (204) are equal, and the top of the main shaft (206) is provided with a pulverizing knife (208) for pulverizing and pretreating the rice. (206) The mounting disc one (208a) on the top, the outer circle surface of the mounting disc one (208a) is fixedly provided with the plate body (208b) that is used to impact and break the rice at a high speed, and the pulverizing knife (208) is provided with two pieces up and down. The upper and lower boards (208b) are arranged in a staggered manner.

Description

A rice milling component capable of pre-crushing

technical field

The invention relates to the technical field of rice processing, in particular to a rice milling component capable of pre-crushing.

Background technique

At present, the milling process of rice adopts the whole grain milling machine that is equally suitable for milling processing of black rice, corn, soybean, sorghum, etc. Rubbing and crushing, because it directly grinds the complete rice, its processing efficiency is low. In order to overcome the above-mentioned drawbacks, it is necessary to provide a kind of ingenious structure, simple principle, convenient operation and use, which can crush the complete rice grains and Make it into broken rice, and then grind the broken rice, which can greatly improve the efficiency of rice milling. The rice milling component that can be pre-crushed.

Contents of the invention

In order to solve the deficiencies in the prior art, the purpose of the present invention is to provide a kind of structure is ingenious, the principle is simple, the operation is convenient to use, can separate and screen the rice flour powder and rice flour granules and will not fully ground rice flour granules Suspension screening inner circulation rice mill with circulation secondary grinding.

In order to realize the above-mentioned technical purpose, the technical scheme adopted in the present invention is as follows.

A rice milling component capable of pre-crushing treatment, which includes a floor-standing mounting frame (100), a grinding device (200) fixedly installed on the mounting frame (100), and the grinding device (200) includes openings at the upper and lower ends Arranged and axially vertical columnar crushing tank (201), the lower end opening of the crushing tank (201) is provided with a sealing bottom plate (202) for its detachable connection, and the upper end opening is provided with a cone for its detachable connection. shaped sealing top cover (203) and the size of the opening formed by the conical surface of the sealing top cover (203) gradually narrows from bottom to top, and rice can be added from the top of the sealing top cover (203) towards the crushing tank (201), and the crushing tank (201) is coaxially provided with a conical lower grinding disc (204) that can float up and down and has openings at the upper and lower ends. The outer circular surface of (204) is sealed and bonded to the inner circular surface of the crushing tank (201), and the bottom of the lower grinding disc (204) is coaxially provided with an inner cylinder (205b) which is connected to the lower end opening and penetrates up and down. The upper end of the bottom plate (202) is provided with an outer cylinder (205a) that is coaxially arranged with the crushing tank (201) and penetrates up and down. The axial direction of (201) constitutes a sliding guide fit, and a main shaft (206) is coaxially arranged in the crushing tank (201), and the top end of the main shaft (206) extends to the top of the crushing tank (201), and the bottom moves through the sealing bottom plate ( 202) and the installation frame (100) are rotated and connected, and the coaxial fixed sleeve on the main shaft (206) is provided with a conical upper grinding disc (207) and the taper of the upper grinding disc (207) and the lower grinding disc (204) are equal, and the upper grinding disc ( 207) is located above the lower grinding disc (204) and is movably socketed in the lower grinding disc (204) and the diameter of the upper grinding disc (207) is smaller than the diameter of the lower grinding disc (204). In the initial state, the upper grinding disc (207) and the lower grinding disc ( 204) to reserve a gap L and L is equal to 0.2cm-0.4cm, the upper end surface of the lower grinding disc (204) is provided with a triangular convex rib (204a) arranged along the direction of its generatrix, and the convex rib (204a) is set There are multiple and arranged in an array along the circumferential direction of the lower grinding disc (204), the lower end surface of the upper grinding disc (207) is provided with triangular ribs 2 (207a) arranged along the direction of its generatrix, and the second ribs (207a) are provided with Multiple and arranged in an array along the circumferential direction of the upper grinding disc (207), the convex height of the first rib (204a) and the second rib (207a) is equal to 1/2L;

The top of the main shaft (206) is provided with a pulverizing knife (208) for pulverizing and pretreating the rice. The pulverizing knife (208) includes a coaxial and fixedly sleeved mounting plate 1 (208a) on the top of the main shaft (206). On the outer surface of the installation plate 1 (208a), there are fixed plates (208b) for high-speed impact and crushing of rice. There are four plates (208b) arranged in an array along the circumferential direction of the installation plate 1 (208a) , the length direction of the plate body (208b) is arranged along the radial direction of the installation plate one (208a), the width direction is parallel to the tangential direction of the circumferential direction of the installation plate one (208a), and the plate body (208b) is arranged along the installation plate one (208a) Extending radially outwards gradually widens, the distance between the plate body (208b) and the inner wall of the crushing tank (201) is 1cm, and the crushing knife (208) is provided with two upper and lower plate bodies (208b) staggered arrangement;

The grinding device (200) also includes an adjustment mechanism (210) for elastically supporting the lower grinding disc (204) and changing the gap between the lower grinding disc (204) and the upper grinding disc (207), and for driving the main shaft ( 206) The driving mechanism (220) for rotation, the feeding mechanism (230) for adding rice to the crushing tank (201) from top to bottom, and the opening of the lower end of the inner cylinder (205b) is connected and connected to export the rice flour To the discharge channel (240) in the suspension separation device (300).

As a further optimization or improvement of this program.

The top of the upper grinding disc (207) is coaxially fixed with a conical guide disc (207b), the guide disc (207b) is equal in diameter to the upper grinding disc (207) and the distance between the conical surfaces is determined by Decreases from bottom to top.

As a further optimization or improvement of this program.

The sealing top cover (203) is provided with an exhaust pipe (203a) connected to the interior of the crushing tank (201), and the output end of the exhaust pipe (203a) is provided with a sealing cap that is threadedly connected with it (203b), the sealing cap (203b) is provided with several fine holes.

As a further optimization or improvement of this program.

The adjustment mechanism (210) is arranged between the sealing bottom plate (202) and the lower grinding disc (204). The adjustment mechanism (210) includes a chute (211) fixed on the upper end surface of the sealing bottom plate (202). The chute (211) is located between the outer cylinder (205a) and the edge of the sealing bottom plate (202) and the chute (211) is arranged along the tangential direction of the circumferential direction of the crushing tank (201), and the chute (211) is provided with two and Arranged symmetrically along the axial direction of the outer cylinder (205a), the slide groove (211) is provided with a slide block (212) that cooperates with it to form a sliding guide, two slide blocks (212) are arranged at intervals, the slide block (212 ) is set as a support slope (213), the distance between the symmetrically arranged two support slopes (213) increases gradually from bottom to top in the vertical direction, and the adjustment mechanism (210) also includes a coaxial movable sleeve The support ring (214) connected to the outside of the outer cylinder (205a), the outer circular surface of the support ring (214) is fixedly provided with outwardly protruding lugs (214a), and the lugs (214a) are provided with two and Arranged symmetrically along the axis of the support ring (214), the lugs (214a) correspond to the chute (211) one by one and are located directly above the chute (211), and the lugs (214a) line the two support slopes symmetrically arranged (213), the upper end surface of the support ring (214) is fixedly provided with an upwardly arranged guide rod (214b), the axial direction of the guide rod (214b) is parallel to the axial direction of the support ring (214), and the guide rod (214b) is set There are multiple and arranged in an array along the circumferential direction of the support ring (214). The lower grinding disc (204) is sleeved on the guide rod (214) and can slide up and down along the guide rod (214). The external movement of the guide rod (214) A support spring (215) is sleeved, one end of the support spring (215) is in conflict with the support ring (214), and the other end is in conflict with the lower millstone (204) and the elastic force of the support spring (215) is always directed from the support ring (214) to the lower millstone (204).

As a further optimization or improvement of this program.

The adjustment mechanism (210) also includes a screw rod (216) that is mounted on the chute (211), and the axial direction of the screw rod (216) is parallel to the distance direction between the two symmetrically arranged sliders (212). , the screw (216) includes a forward thread section, a reverse thread section and a smooth section, one of the sliders (212) is sleeved on the forward thread section of the screw (216) and the two form a threaded connection, and the other A slider (212) is sleeved on the reverse thread section of the screw rod (216) and the two form a threaded connection. The smooth section of the screw rod (216) moves through the crushing tank (201) and extends to the outside and the end A hand wheel (217) is fixed coaxially, and a synchronous belt assembly (218) for connecting the two screw rods (216) is arranged between ends away from the hand wheel (217).

As a further optimization or improvement of this program.

The drive mechanism (220) includes a main motor (221) fixedly installed on the installation frame (100), the output shaft of the main motor (221) is axially parallel to the axial direction of the main shaft (206), and the main motor (221) A belt transmission assembly (222) is provided between the bottom end of the main shaft (206) and the two for connecting the two. The belt transmission assembly (222) includes a main pulley coaxially fixedly sleeved on the output shaft of the main motor (211), a coaxial The shaft is fixedly sleeved on the driven pulley on the bottom end of the main shaft (206) and the belt that is arranged on the driving pulley and the driven pulley and is used to connect the two.

As a further optimization or improvement of this program.

The feeding mechanism (230) includes a funnel (231) arranged above the sealing top cover (203), and a vertical support for the funnel (231) is provided between the funnel (231) and the sealing bottom cover (203). A hard transition duct (232), one end of the transition duct (232) is connected to the lower opening of the funnel (231), and the other end is connected to the sealed top cover (203), and the transition duct (232) is connected along its height direction A horizontal gate (233) is provided in the middle of the gate (233), and the gate (233) runs through the cross section of the transition pipe (232). The gate (233) is provided with a gate (234) that cooperates with the movable plug connection. The gate (234 ) into the gate (233), the transition duct (232) is disconnected, the gate (234) is pulled out of the gate (233), and the transition duct (232) is turned on.

As a further optimization or improvement of this program.

The crushing tank (201) is also provided with a rebound mechanism (250) for bouncing the falling rice upwards, and the rebound mechanism (250) is located between the crushing knife (208) and the upper grinding disc (207) and close to the crushing The knife (208) is arranged, and the rebound mechanism (250) includes a mounting disc 2 (251) coaxially rotating and sleeved on the main shaft (206). The outer circular surface of the mounting disc 2 (251) is provided with The rebound plate (252) is extended and arranged. The length direction of the rebound plate (252) is arranged along the radial direction of the second mounting plate (251), and the width gradually widens outward along the radial direction of the second mounting plate (251). There are four plates (252) arranged in an array along the circumferential direction of the mounting plate 2 (251), and the rebound plate (252) is set as a rebounding slope along the side of the tangential direction parallel to the circumference of the mounting plate 2 (251) ( 253), the rebound slope (253) makes the upper end surface area of the rebound plate (252) smaller than its lower end surface area;

The rebound mechanism (250) also includes a reversing drive member for driving the second installation disc (251) to reversely rotate, and the reversing drive member is located between the second installation disc (251) and the upper grinding disc (207). The driving member includes a circular fixed frame one (254) and a fixed frame two (255) coaxially fixed on the inner surface of the crushing tank (201), and the distance between the fixed frame one (254) and the fixed frame two (255) is Arranged and hollowed out up and down, between the first fixed frame (254) and the second fixed frame (255), there is a casing (256) that is fixedly connected to the two, and the casing (256) is sleeved on the outside of the main shaft (206) , the reversing drive member also includes a hollow transmission shaft (257) coaxially rotatable and sleeved on the outside of the main shaft (206), one end of the transmission shaft (247) is coaxially fixedly connected with the mounting plate 2 (251), and the other end moves through it The casing (256) extends to the inside of the casing (256), and the coaxial fixed sleeve at this end is provided with a driven gear (258a), and the reversing drive component also includes a driving gear ( 258b), the driving gear (258b) is located in the casing (256) and below the driven gear (258a), and the inner wall of the casing (256) is provided with a transmission gear whose axis is perpendicular to the axis of the main shaft (206) (259), two driving gears (259) are arranged symmetrically along the axial direction of the main shaft (206), the driving gear (258b), the driven gear (258a) and the driving gear (259) are all bevel gears, and the driving gear (258b) meshes with the transmission gear (259), and the transmission gear (259) meshes with the driven gear (258a).

Compared with the prior art, the present invention has the advantages of ingenious structure, simple principle, and convenient operation and use. It can break the complete rice grains and turn them into broken rice, and then grind the broken rice, which can greatly improve the Rice milling efficiency.

Description of drawings

Figure 1 is a schematic diagram of the overall mechanism of the present invention.

Fig. 2 is a schematic diagram of the overall structure of the present invention.

Fig. 3 is a schematic diagram of the overall structure of the present invention.

Fig. 4 is a schematic diagram of the overall structure of the present invention.

Fig. 5 is a schematic diagram of the overall structure of the pulverizing device.

Fig. 6 is a schematic diagram of a partial structure of a pulverizing device.

Fig. 7 is a schematic diagram of the internal structure of the grinding device.

Fig. 8 is a schematic diagram of a partial structure of a pulverizing device.

Figure 9 is an installation diagram of the lower grinding disc.

Figure 10 is an installation diagram of the lower grinding disc.

Fig. 11 is the matching diagram of the lower grinding disc and the upper grinding disc.

Fig. 12 is the matching diagram of the lower grinding disc and the upper grinding disc.

Fig. 13 is the matching diagram of the lower grinding disc and the upper grinding disc.

Figure 14 is a schematic structural view of the upper grinding disc.

Fig. 15 is a matching diagram of the crushing knife and the main shaft.

Fig. 16 is a matching diagram of the adjustment mechanism and the lower grinding disc.

Fig. 17 is a matching diagram of the adjustment mechanism and the lower grinding disc.

Fig. 18 is a structural schematic diagram of the adjustment mechanism.

Fig. 19 is a schematic diagram of a partial structure of the adjustment mechanism.

Fig. 20 is a schematic diagram of a partial structure of the adjustment mechanism.

Fig. 21 is a schematic diagram of a partial structure of the adjustment mechanism.

Fig. 22 is a matching diagram of the drive mechanism and the main shaft.

Fig. 23 is a schematic structural view of the feeding mechanism.

Fig. 24 is the matching diagram of the lower grinding disc and the discharge channel.

Figure 25 is a matching diagram of the lower grinding disc and the discharge channel.

Figure 26 is a cooperation diagram of the rebound mechanism and the main shaft.

Fig. 27 is the coordination diagram of rebound mechanism and main shaft.

Fig. 28 is a partial structural schematic diagram of the rebound mechanism.

Fig. 29 is a coordination diagram of the suspension separation device and the discharge channel.

Fig. 30 is a schematic diagram of a partial structure of a suspension separation device.

Figure 31 is a schematic diagram of the internal structure of the suspension tank.

Fig. 32 is the matching diagram of the circulation device and the suspension tank.

Fig. 33 is a coordination diagram of the circulation device and the crushing tank.

Fig. 34 is a schematic diagram of the internal structure of the circulation device.

It is marked in the figure as: 100, mounting frame;

200, grinding device; 201, crushing tank; 202, sealing bottom plate; 203, sealing top cover; 203a, exhaust pipe; 203b, sealing cap; 204, lower grinding disc; 205b, inner cylinder; 206, main shaft; 207, upper grinding disc; 207a, convex edge two; 207b, guide disc; 208, crushing knife; 208a, installation disc one; 208b, plate body; Groove; 212, slide block; 213, support slope; 214, support ring; 214a, lug; 214b, guide rod; 215, support spring; 216, screw mandrel; 217, hand wheel; Drive mechanism; 221, main motor; 222, belt transmission assembly; 230, feeding mechanism; 231, funnel; 232, transition pipe; 233, gate; 234, gate; 240, discharge channel; 251, installation plate two; 252, rebound plate; 253, rebound slope; 254, fixed frame one; 255, fixed frame two; 256, casing; 257, transmission shaft; 258a, driven gear; 258b, driving gear ; 259, transmission gear;

300, suspension separation device; 310, blower mechanism; 311, receiving cylinder; 312, fixed frame three; 313, servo motor; 314, fan; 316, input pipeline; 317, output pipeline; 320, suspension tank; 321, tank Body; 322, top end cover; 323, bottom end cover; 324, injection pipeline;

400, circulation device; 401, outer casing; 402, blanking port; 403, guide inclined plate; 404, circulation pipeline; 405, auger; 406, circulation motor.

Detailed ways

Referring to Fig. 1-34, a suspension screening internal circulation rice mill, which includes a floor mounting frame 100, a grinding device 200 fixedly installed on the mounting frame 100, a suspension separation device 300 and a circulation device 400, the grinding device 200 is used to grind rice into rice flour and discharge it to the suspension separation device 300. The suspension separation device 300 is used to carry out air-suspension separation of rice flour and discharge the rice flour powder to the outside for collection and treatment, making the rice flour particles Discharged into the circulation device 400, the circulation device 400 is used to receive the rice flour particles discharged from the suspension separation device 300 and transport them to the grinding device 200 for secondary grinding processing, so that the cycle is carried out to achieve sufficient grinding of rice .

Specifically, the grinding device 200 includes an axially vertical columnar pulverizing tank 201 arranged with openings at the upper and lower ends. Be provided with the conical sealing top cover 203 that its detachable connection cooperates and the opening size that the sealing top cover 203 conical surface forms narrows gradually from bottom to top, and can add rice toward the crushing tank 201 by the top of sealing top cover 203, pulverize The tank 201 is coaxially provided with a conical lower grinding disc 204 that can float up and down and has openings at the upper and lower ends. It is sealed and attached to the inner circular surface of the crushing tank 201. The bottom of the lower grinding plate 204 is coaxially provided with an inner cylinder 205b connected to the lower end opening and penetrating up and down. The upper end of the sealing bottom plate 202 is provided with a And the outer cylindrical body 205a that penetrates up and down, the inner cylindrical body 205b is plugged in the outer cylindrical body 205a and the two form a sliding guide fit along the axial direction of the crushing tank 201, and the main shaft 206 is coaxially arranged in the crushing tank 201, and the main shaft 206 The top end extends to the top of the crushing tank 201, and the bottom end moves through the sealing bottom plate 202 and is connected with the mounting frame 100 in rotation. Equally, the upper grinding disc 207 is located above the lower grinding disc 204 and is movably socketed in the lower grinding disc 204 and the diameter of the upper grinding disc 207 is smaller than the diameter of the lower grinding disc 204. In the initial state, a gap L is reserved between the upper grinding disc 207 and the lower grinding disc 204 and L is equal to 0.2cm-0.4cm. In order to enable the upper millstone 207 and the lower millstone 204 to grind the rice falling between the two, the upper end surface of the lower millstone 204 is provided with triangular protrusions arranged along the direction of its generatrix. Ridge 1 204a and rib 1 204a are provided in multiples and arranged in an array along the circumferential direction of the lower grinding disc 204. The lower end surface of the upper grinding disc 207 is provided with triangular rib 2 207a arranged along the direction of its generatrix. Ridge 2 207a is set There are multiple and arranged in an array along the circumferential direction of the upper grinding disc 207. The protrusion height of the first rib 204a and the second rib 207a is equal to 1/2L. The rice between the grinding discs 204 is ground, and the purpose of driving the upper grinding disc 207 and the lower grinding disc 204 to form a cone is to increase the area for grinding the rice and improve the efficiency of rice grinding.

More specifically, in order to facilitate the rice falling from the top of the crushing tank 201 to spread around and evenly fall between the upper grinding disc 207 and the lower grinding disc 204, the top of the upper grinding disc 207 is coaxially fixed with a conical Guide disc 207b, guide disc 207b is equal to the diameter of the upper grinding disc 207 and the distance between its tapered surface gradually decreases from bottom to top in the vertical direction, through the guidance of the guide disc 207b to the rice, the rice is guided along the direction of the guide disc 207b. The tapered surfaces spread out and evenly roll down between the upper grinding disc 207 and the lower grinding disc 204 .

More specifically, in order to improve the efficiency of grinding the rice by the upper grinding disc 207 and the lower grinding disc 204, the top of the main shaft 206 is provided with a pulverizing knife 208 for pulverizing and preprocessing the rice. The pulverizing knife 208 includes a coaxial Fixedly sleeved on the mounting disc 1 208a on the top of the main shaft 206, the outer circumference of the mounting disc 208a is fixedly provided with a plate body 208b for high-speed impact and crushing of rice, and the plate body 208b is provided with four and along the mounting disc 1 208a is arranged in an array in the circumferential direction, the length direction of the plate body 208b is arranged along the radial direction of the mounting plate 208a, the width direction is parallel to the tangential direction of the circumferential direction of the mounting plate 208a, and the plate body 208b is radially outward along the mounting plate 208a The extension gradually widens, and the distance between the plate body 208b and the inner wall of the crushing tank 201 is 1cm. In order to improve the probability of the plate body 208b colliding with the rice, the crushing knife 208 is provided with two upper and lower plate bodies 208b arranged in a staggered manner. , through the main shaft 206 to drive the crushing knife 208 to rotate at a high degree, the rice falls from top to bottom, and the side of the plate body 208b collides and crushes the rice, so as to realize the pretreatment of rice crushing.

The grinding device 200 also includes an adjusting mechanism 210 for elastically supporting the lower grinding disc 204 and changing the gap between the lower grinding disc 204 and the upper grinding disc 207, a driving mechanism 220 for driving the main shaft 206 to rotate, and a driving mechanism 220 for rotating the lower grinding disc 204. The crushing tank 201 is fed into the feeding mechanism 230 of rice from top to bottom and is connected to the opening of the lower end of the inner cylinder 205b and discharges the rice flour to the discharge channel 240 in the suspension separation device 300. The gap between the grinding disc 204 and the upper grinding disc 207 changes the granularity of the rice grinding into powder by the lower grinding disc 204 and the upper grinding disc 207 .

During processing, the driving mechanism 220 starts to run and drives the main shaft 206 to rotate at a high speed around its own axial direction. The main shaft 206 will drive the upper grinding disc 207 and the crushing knife 208 to rotate at a high speed synchronously. The top of the rice is added to its inside, and the rice will fall freely from top to bottom in the crushing tank 201. In the process of passing through the crushing knife 208, the side of the high-speed rotating plate body 208b will be hit and broken into broken rice, and the broken rice will be Further falling and falling onto the guide disc 207b, under the guidance of the guide disc 207b, the broken rice will spread around and evenly roll down to the gap between the upper mill disc 207 and the lower mill disc 204, and the high-speed rotating upper mill disc 207 cooperates with the lower grinding disc 204 to grind the broken rice into rice powder and enter the inner cylinder 205b, the discharge channel 240 discharges the rice powder to the suspension separation device 300, and the suspension separation device 300 performs air suspension separation on the rice powder, The separated rice flour powder is directly discharged and collected, and the separated rice flour particles will be discharged into the circulation device 400, and the circulation device 400 discharges the rice flour particles into the crushing tank 201, and the upper grinding disc 207 and the The lower grinding disc 204 will carry out secondary grinding process to the rice flour particles.

The adjustment mechanism 210 is arranged between the sealing bottom plate 202 and the lower grinding disc 204. The adjustment mechanism 210 includes a chute 211 fixed on the upper end surface of the sealing bottom plate 202. The chute 211 is located at the edge of the outer cylinder 205a and the sealing bottom plate 202. Between them and the chute 211 is arranged along the tangential direction of the circumferential direction where the crushing tank 201 is located. There are two chute 211 and they are arranged symmetrically along the axis direction of the outer cylinder 205a. Block 212, two sliders 212 are arranged at intervals, the upper end surface of the slider 212 is set as a support slope 213, the distance between the two symmetrically arranged support slopes 213 gradually increases from bottom to top in the vertical direction, the The adjustment mechanism 210 also includes a support ring 214 that is coaxially movably sleeved on the outside of the outer cylinder 205a. On the outer circular surface of the support ring 214, there are fixedly provided with outwardly protruding lugs 214a. The lugs 214a are provided with two and Arranged symmetrically along the axis of the support ring 214, the lugs 214a correspond to the slide grooves 211 one by one and are located directly above the slide grooves 211, the lugs 214a line the two support slopes 213 arranged symmetrically, and the upper end surface of the support ring 214 is fixed An upwardly arranged guide rod 214b is provided. The axial direction of the guide rod 214b is parallel to the axial direction of the support ring 214. There are multiple guide rods 214b arranged in an array along the circumferential direction of the support ring 214. The lower grinding disc 204 is sleeved on the guide rod 214 and can slide up and down along the guide rod 214, the outer movable sleeve of the guide rod 214 is provided with a support spring 215, one end of the support spring 215 is in conflict with the support ring 214, the other end is in conflict with the lower grinding disc 204 and the elastic force of the support spring 215 is always controlled by The supporting ring 214 points to the lower grinding disc 204, and the supporting ring 214 floats upwards by making the slide blocks 212 slide close to each other, thereby reducing the gap between the lower grinding disc 204 and the upper grinding disc 207; by making the sliding blocks 212 slide away from each other, the The support ring 214 floats downward, thereby increasing the gap between the lower grinding disc 204 and the upper grinding disc 207 .

Specifically, in order to be able to drive the slider 212 to slide towards/away from each other along the chute 211, the adjustment mechanism 210 also includes a screw 216 mounted on the chute 211, the axis of the screw 216 is symmetrically arranged parallel to the In the direction of the distance between the two sliders 212, the screw 216 includes a forward thread section, a reverse thread section and a smooth section, wherein one slider 212 is sleeved on the forward thread section of the screw 216 and the two form a thread Connection fit, another slider 212 is sleeved on the reverse thread section of the screw rod 216 and the two form a threaded connection fit, the smooth section of the screw rod 216 moves through the crushing tank 201 and extends to the outside, and the end is fixed coaxially There is a hand wheel 217, in order to enable the two sets of sliders 212 to slide synchronously, to ensure that the support ring 214 can float upwards horizontally, and to avoid the support ring 214 from tilting, and a connection between the ends of the two screw rods 216 away from the hand wheel 217 is provided The synchronous belt assembly 218 of the two can synchronously drive the two groups of sliders 212 by turning any one of the handwheels 217, so that the two groups of sliders 212 can slide closer to/farther away from each other synchronously.

During the working process of the adjustment mechanism 210, when it is necessary to reduce the gap between the lower grinding disc 204 and the upper grinding disc 207, turn the hand wheel 217 to rotate forward, the hand wheel 217 will drive the rod 216 to rotate synchronously, and the screw rod 216 will drive the two slides. The block 212 slides close to each other along the chute 211, and the supporting inclined surface 213 will make the supporting ring 214 float upwards. Under the elastic force of the supporting spring 215, the lower grinding disc 204 will float close to the upper grinding disc 207. Between the lower grinding disc 204 and the upper grinding disc 207 When the gap between the lower grinding disc 204 and the upper grinding disc 207 needs to be increased, turn the hand wheel 217 to rotate in the opposite direction, and the hand wheel 217 will drive the screw rod 216 to rotate synchronously, and the screw rod 216 will drive the two sliders 212 slide away from each other along the chute 211, the lower grinding disc 204 will float away from the upper grinding disc 207 under its own gravity, and the distance between the lower grinding disc 204 and the upper grinding disc 207 increases. By adjusting the distance between the lower grinding disc 204 and the upper grinding disc 207 The size of the gap, on the one hand, can change the grain size of rice ground into rice flour, on the other hand, it can expand the grinding of other grains, such as wheat, corn, soybeans and so on.

The drive mechanism 220 includes a main motor 221 fixedly installed on the mounting bracket 100, the output shaft of the main motor 221 is axially parallel to the axial direction of the main shaft 206, and a device for connecting two The belt transmission assembly 222 of the latter, the belt transmission assembly 222 includes a main pulley coaxially fixedly sleeved on the output shaft of the main motor 211, a driven pulley coaxially fixedly sleeved on the bottom end of the main shaft 206, and a driven pulley arranged on the driving belt The pulley and the driven pulley and the belt used to connect them transmit the power on the output shaft of the main motor 221 to the main shaft 206 through the belt transmission assembly 222 and drive the main shaft 206 to rotate around its own axis at high speed.

The feeding mechanism 230 includes a funnel 231 arranged above the sealing top cover 203, a vertical hard transition duct 232 supporting the funnel 231 is arranged between the funnel 231 and the sealing bottom cover 203, and one end of the transition duct 232 is connected to the funnel. The lower end opening of 231 is connected and connected, and the other end is connected and connected with the sealing top cover 203. In order to control the on-off of the transition duct 232, the transition duct 232 is provided with a horizontal gate 233 at the middle position along its height direction and the gate 233 runs through the transition The cross-section of the pipeline 232, the gate 233 is provided with a gate 234 that forms a movable plug-in connection, the gate 234 is inserted into the gate 233, the transition pipeline 232 is disconnected, the gate 234 is pulled out of the gate 233, and the transition pipeline 232 is turned on , during use, the user pours the rice waiting for grinding into the funnel 231, pulls out the gate 234 from the gate 233, so that the rice enters the crushing tank 201 from the funnel 231 through the transition pipe 232, and can pass through the gate 234 pull out degree, control the flow rate of rice drop.

In order to facilitate the feeding mechanism 230 to smoothly add rice towards the crushing tank 201, the sealed top cover 203 is provided with an exhaust pipe 203a connected to the inside of the crushing tank 201, and the output end of the exhaust pipe 203a is covered It is provided with a sealing cap 203b that is threadedly connected with it. The sealing cap 203b is provided with some pores, and the crushing tank 201 is connected with the outside through the exhaust pipe 203a. When adding rice towards the crushing tank 201, the crushing tank 201 The air inside can be discharged to the outside through the exhaust pipe 203a, so as to facilitate the falling of rice into the crushing tank 201.

As a more optimized solution of the present invention, in order to further increase the probability of the high-speed rotating crushing knife 208 colliding with the rice, the crushing tank 201 is also provided with a rebound mechanism 250 for rebounding the falling rice upwards and the rebound mechanism 250 is located between the crushing knife 208 and the upper grinding disc 207 and is arranged close to the crushing knife 208. The rebound mechanism 250 includes a mounting disc 251 coaxially rotating and socketed on the main shaft 206. The springback plate 252 arranged radially outwards, the length direction of the springback plate 252 is arranged radially along the radial direction of the second mounting plate 251, and the width is gradually widened outward along the radial direction of the second mounting plate 251, and the rebounding plate 252 is provided with Four and arranged in an array along the circumferential direction of the installation disc two 251, the rebound plate 252 is arranged as a rebound slope 253 along the side of the tangent direction parallel to the circumference of the installation disc two 251, and the rebound slope 253 makes the upper surface of the rebound plate 252 The area of the end surface is smaller than the area of the lower end surface. By driving the rebound slope 253 to rotate at a high speed around the axis of the main shaft 206, the rice falling there is bounced, so that the rice moves upward to the pulverizer 208 for another impact and crushing.

Specifically, in order to increase the collision probability between the rebound slope 253 and the rice, the rebound mechanism 250 also includes a reversing drive member for driving the second installation disc 251 to reversely rotate, and the reversing drive member is located between the second installation disc 251 and Between the upper grinding discs 207, the reversing drive member includes a circular fixed frame one 254 and a fixed frame two 255 coaxially fixed on the inner surface of the crushing tank 201. Through the hollow arrangement, there is a casing 256 fixedly connected to the two fixing frames 254 and 255, and the casing 256 is sleeved on the outside of the main shaft 206, and the reversing drive member also includes a coaxial rotation socket The hollow transmission shaft 257 outside the main shaft 206, one end of the transmission shaft 247 is coaxially fixedly connected with the installation plate 251, and the other end moves through the casing 256 and extends to the inside of the casing 256, and the coaxial fixed sleeve at this end is provided with a driven gear 258a, the reversing drive member also includes a driving gear 258b coaxially fixedly sleeved on the main shaft 206, the driving gear 258b is located in the casing 256 and below the driven gear 258a, and the inner wall of the casing 256 is rotatably provided with an axial The transmission gear 259 perpendicular to the axial direction of the main shaft 206, two transmission gears 259 are arranged symmetrically along the axial direction of the main shaft 206, the driving gear 258b, the driven gear 258a and the transmission gear 259 are all bevel gears, the driving gear 258b and the transmission gear The gear 259 is meshed, the transmission gear 259 is meshed with the driven gear 258a, and the power of the main shaft 206 is transmitted to the second installation disk 251 through the reversing transmission member and drives the second installation disk 251 to rotate in reverse at a high speed. The significance of adopting this scheme is that, On the one hand, the power of the main shaft 206 can be transmitted to the second installation disc 251, so that the second installation disc 251 can drive the rebound plate 252 to rotate around the axis of the main shaft 206; , increase the collision probability of the broken rice crushed by the crushing knife 208 in the first collision with the rebound slope 253, and increase the probability that the broken rice moves upwards and is crushed by the crushing knife 208 for the second collision.

After the rice is processed by the grinding device 200, it will be discharged downwards from the discharge channel 240. At this time, the rice flour includes rice flour powder and rice flour granules. In order to separate the rice flour powder and rice flour granules, the The suspension separation device 300 comprises a blower mechanism 310 and a suspension tank 320 arranged vertically in the axial direction, the blower mechanism 310 is connected to the bottom of the suspension tank 320, and the blower mechanism 310 is used for discharging the rice flour from the discharge channel 240 towards the suspension tank 320 is blown from bottom to top and the rice flour is suspended in the suspension tank 320, and the suspension tank 320 discharges and collects the suspended rice flour powder, and discharges the sinking rice flour particles into the circulation device 400.

Specifically, the blowing mechanism 310 includes a material receiving cylinder 311 fixedly installed on the installation frame 100 and arranged axially and horizontally. It is located in the middle of the material receiving cylinder 311 along its axial direction, and the inner circular surface of one end of the material receiving cylinder 311 is fixed with a hollow-out fixing frame 3 312, and the fixing frame 3 312 is provided with a speed-adjustable servo motor 313 And the output shaft of the servo motor 313 is axially arranged coaxially with the receiving barrel 311, the output shaft of the servo motor 313 is arranged towards the discharge channel 240 and the fan 314 is coaxially fixedly sleeved on the output shaft, and the other end of the receiving barrel 311 Located below the suspension tank 320 and between the two is provided with an input pipeline 316 for connecting the two, the input end of the input pipeline 316 is connected to the other end of the receiving cylinder 311, and the output end is connected to the bottom end of the suspension tank 320 Connected, the top of the suspension tank 320 is connected with an output pipeline 317 connected to it. In order to collect and process the rice flour powder discharged from the output pipeline 317, a cloth tube is sleeved on the output end of the output pipeline 317. Shaped cloth belt (not shown in the figure), one end of the cloth belt is tied tightly, and the other end is sleeved on the output end of the output pipeline 317 and tied tightly. The purpose of using the cloth belt to collect the rice flour powder is to facilitate the discharge At the same time, it can collect rice flour powder.

More specifically, in order to facilitate the suspension tank 320 to fully suspend the rice flour blown out by the input pipe 316, the suspension tank 320 includes a cylindrical tank body 321 arranged vertically in the axial direction, and the upper opening of the tank body 321 is provided with The top end cover 322 is arranged in a conical shape and the upper and lower ends are open. The large opening of the top end cover 322 is connected to the upper opening of the tank body 321, and the lower opening of the top end cover 322 is connected to the input end of the output pipe 317. Connected, the lower end opening of the tank body 321 is provided with a bottom end cover 323 arranged in a conical shape with openings at the upper and lower ends. The large opening of the bottom end cover 323 is connected to the lower end opening of the tank body 321. The bottom end cover 323 A spray pipe 324 extending toward the inside of the tank body 321 is connected and connected to the small opening of the tank body 321. The spray pipe 324 is arranged coaxially with the tank body 321 and gradually narrows from bottom to top in the vertical direction. One end of the spray pipe 324 extends To the bottom of the bottom end cover 323 and this end is the butt end, the other end of the injection pipeline 324 extends into the tank body 321 and this end is the injection end, the output end of the input pipeline 316 is connected to the butt end of the injection pipeline 324, The significance of adopting this scheme is to make the rice flour sprayed out by the injection pipe 324 fully disperse in the whole suspension tank 320 for suspension separation, wherein the gravity of the rice flour powder will be less than the buoyancy of the air and will be in the conical Under the guiding and gathering effect of the top end cover 322, it enters the output pipe 327, wherein the gravity of the rice flour particles will be greater than the buoyancy of the air and sinks into the conical bottom end cover 323.

The suspension separation device 300 starts the servo motor 313 during operation, and the output end of the servo motor 313 will drive the fan 314 to rotate and generate an airflow towards the input pipeline 316, and the rice flour discharged from the discharge channel 240 will be towards the input pipeline 316 by this airflow. Blowing, then, spraying out towards the tank body 321 through the injection pipe 317 and spreading out, under the effect of the air flow, the gravity of the rice flour powder will be less than the buoyancy of the air and under the guidance and gathering of the conical top end cover 322 Into the output pipeline 327, the rice flour powder is discharged and collected by the output pipeline 327. At the same time, the gravity of the rice flour particles will be greater than the buoyancy of the air and sink into the conical bottom end cover 323, completing the rice flour At the same time, by adjusting the rotating speed of the servo motor 313, the flow rate of the air flow can be changed, thereby changing the buoyancy of the air in the tank body 321, and then controlling the size of the rice flour particles that sink.

In order to be able to discharge the rice flour particles that have fallen and settled in the bottom end cover 323 into the crushing tank 201 for secondary grinding, the described circulation device 400 includes a nozzle that is located below the bottom end cover 323 and is coaxially sleeved on the injection pipe. 324 outside the outer casing 401, the bottom end of the outer casing 401 and the top of the injection pipe 324 form a closed opening, an annular cavity is formed between the outer casing 401 and the injection pipe 324, and a useful opening is opened on the bottom end cover 323 For the discharge port 402 connecting the cavity and the tank body 321, there are multiple discharge ports 402 arranged in an array along the circumferential direction of the spray pipe 324 and the discharge port 402 is arranged close to the spray pipe 324. The circulation device 400 also It includes a circulation pipe 404 arranged on one side of the outer sleeve 401 and axially parallel to the axial direction of the receiving barrel 311. The circulation pipe 404 extends from one side of the outer sleeve 401 to the crushing tank 201 and the end near the outer sleeve 401 is the input end, close to One end of the crushing tank 201 is the output end, the input end of the circulation pipe 404 is closed and the output end is open, the output end of the circulation pipe 404 is connected to the crushing tank 201 and the connection is located between the first fixed frame 254 and the second fixed frame 255 In between, the cavity is connected to the outer circular surface of the input end of the circulation pipeline 404. In order to facilitate the introduction of the rice flour particles in the cavity into the circulation pipeline 404, the cavity is provided with a circularly arranged and inclined guiding plate 403 The upper cavity of the sloping guide plate 403 is divided into an upper cavity and a lower cavity which are mutually sealed, and the inclined lower end of the sloping guide plate 403 points to the lower edge where the upper cavity connects with the circulation pipe 404 .

Specifically, in order to enable the rice flour particles introduced into the circulation pipeline 404 to be input into the crushing tank 201, an auger 405 matching it is set in the circulation pipeline 404, and the driving end of the auger 405 is connected by the input end of the circulation pipeline 404. Stretch outward, and the circulation device 400 also includes a circulation motor 406 fixedly connected to the installation frame 100, the output shaft of the circulation motor 406 is fixedly connected with the driving end of the auger 405, and the auger 405 is driven to rotate by the circulation motor 406, The rice flour particles in the circulation pipeline 404 are transported to the crushing tank 201 for secondary grinding.

During the working process of the circulation device 400, the circulation motor 406 is started, and the circulation motor 406 will drive the auger 405 to rotate. At the same time, the rice flour particles that have fallen into the bottom end cover 323 will enter the upper chamber through the discharge port 402 , under the action of the guide inclined plate 403, the rice flour particles are guided and slid into the input end of the circulation pipeline 404, and the auger 405 rotates to transport the rice flour particles at the input end of the circulation pipeline 404 to the crushing tank 201 for secondary grinding Shredded.

Claims (10)

1. The utility model provides a but rice crocus component of crushing treatment in advance which characterized in that: the grinding device comprises a floor-type mounting frame (100), a grinding device (200) fixedly mounted on the mounting frame (100), wherein the grinding device (200) comprises a cylindrical grinding tank (201) which is arranged with openings at the upper end and the lower end and is vertical in the axial direction, a sealing bottom plate (202) detachably connected and matched with the opening at the lower end of the grinding tank (201) is arranged at the opening at the lower end of the grinding tank, a conical sealing top cover (203) detachably connected and matched with the opening at the upper end is arranged at the opening at the upper end, the opening size formed by the conical surfaces of the sealing top cover (203) is gradually narrowed from bottom to top, rice can be added into the grinding tank (201) from the top of the sealing top cover, a conical lower grinding disc (204) which can float up and down and is arranged with openings at the upper end and the lower end is coaxially arranged in the grinding tank (201), the opening size formed by the inner circular surface of the lower grinding disc (204, an inner cylinder (205 b) which is communicated with the opening at the lower end of the lower grinding disc (204) and penetrates up and down is coaxially arranged at the bottom of the lower grinding disc (204), an outer cylinder (205 a) which is coaxially arranged with the grinding tank (201) and penetrates up and down is arranged on the upper end surface of the sealing bottom plate (202), the inner cylinder (205 b) is inserted into the outer cylinder (205 a) and forms sliding guide fit along the axial direction of the grinding tank (201), a main shaft (206) is also coaxially arranged in the grinding tank (201), the top end of the main shaft (206) extends to the top of the grinding tank (201), the bottom end of the main shaft movably penetrates through the sealing bottom plate (202) to be rotatably connected and matched with the mounting frame (100), a conical upper grinding disc (207) is coaxially and fixedly sleeved on the main shaft (206), the conicity of the upper grinding disc (207) is equal to that of the lower grinding disc (204), the upper grinding disc (207) is positioned above the lower grinding disc (204) and movably sleeved in the lower grinding, a clearance L is reserved between the upper grinding disc (207) and the lower grinding disc (204) in an initial state, and L is equal to 0.2cm-0.4cm, a first triangular rib (204 a) arranged along the generatrix direction of the upper end face of the lower grinding disc (204) is arranged on the upper end face of the lower grinding disc (204), a plurality of first ribs (204 a) are arranged and are arranged in an array manner along the circumferential direction of the lower grinding disc (204), a second triangular rib (207 a) arranged along the generatrix direction of the lower end face of the upper grinding disc (207) is arranged on the lower end face of the upper grinding disc (207), a plurality of second ribs (207 a) are arranged and are arranged in an array manner along the circumferential direction of the upper grinding disc (207), and the protruding heights of the first ribs (204;

the rice crushing and crushing device is characterized in that a crushing knife (208) used for crushing and pretreating rice is arranged at the top of the main shaft (206), the crushing knife (208) comprises a first mounting disc (208 a) coaxially and fixedly sleeved on the top end of the main shaft (206), plate bodies (208 b) used for crushing the rice in a high-speed impact mode are fixedly arranged on the outer circular surface of the first mounting disc (208 a), the four plate bodies (208 b) are arranged in an array mode along the circumferential direction where the first mounting disc (208 a) is located, the length direction of the plate bodies (208 b) is arranged along the radial direction of the first mounting disc (208 a), the width direction of the plate bodies is parallel to the tangential direction of the circumferential direction where the first mounting disc (208 a) is located, the plate bodies (208 b) extend outwards in the radial direction of the first mounting disc (208 a) and gradually widen, and the distance between the plate bodies (208 b) and, the crushing knives (208) are provided with two plate bodies (208 b) which are arranged up and down and are staggered;

the grinding device (200) further comprises an adjusting mechanism (210) used for elastically supporting the lower grinding disc (204) and changing the gap between the lower grinding disc (204) and the upper grinding disc (207), a driving mechanism (220) used for driving the main shaft (206) to rotate, a feeding mechanism (230) used for feeding rice into the grinding tank (201) from top to bottom, and a discharge channel (240) communicated with the lower end opening of the inner cylinder (205 b) and used for guiding the rice flour out of the suspension separation device (300).

2. A pre-crushable rice milling assembly as set forth in claim 1 wherein: the top end of the upper grinding disc (207) is coaxially and fixedly provided with a conical guide disc (207 b), the diameters of the guide disc (207 b) and the upper grinding disc (207) are equal, and the distance between conical surfaces of the guide disc (207 b) and the upper grinding disc (207) is gradually reduced from bottom to top along the vertical direction.

3. A pre-crushable rice milling assembly as set forth in claim 1 wherein: an exhaust pipe (203 a) communicated with the inner part of the crushing tank (201) is arranged on the sealing top cover (203), a sealing cap (203 b) matched with the exhaust pipe in a threaded connection mode is sleeved on the output end of the exhaust pipe (203 a), and a plurality of fine holes are formed in the sealing cap (203 b).

4. A pre-crushable rice milling assembly as set forth in claim 1 wherein: the adjusting mechanism (210) is arranged between the sealing bottom plate (202) and the lower grinding disc (204), the adjusting mechanism (210) comprises sliding chutes (211) fixedly arranged on the upper end face of the sealing bottom plate (202), the sliding chutes (211) are positioned between the outer cylinder (205 a) and the edge of the sealing bottom plate (202), the sliding chutes (211) are arranged along the tangential direction of the circumferential direction of the crushing tank (201), the sliding chutes (211) are provided with two sliding blocks (212) which are symmetrically arranged along the axial direction of the outer cylinder (205 a), the sliding chutes (211) are internally provided with sliding guide matched sliding blocks (212), the sliding blocks (212) are arranged at intervals, the upper end face of each sliding block (212) is arranged to be a supporting inclined face (213), the distance between the two symmetrically arranged supporting inclined faces (213) is gradually increased from bottom to top along the vertical direction, the adjusting mechanism (210) further comprises supporting rings (214) coaxially and movably sleeved outside the outer cylinder (205 a), the outer circular surface of the support ring (214) is fixedly provided with lugs (214 a) protruding outwards, the lugs (214 a) are provided with two lugs and are symmetrically arranged along the axis of the support ring (214), the lugs (214 a) correspond to the sliding grooves (211) one by one and are positioned right above the sliding grooves (211), and the lugs (214 a) are lined on two support inclined surfaces (213) which are symmetrically arranged.

5. A pre-crushable rice milling assembly as set forth in claim 4 wherein: the upper end face of support ring (214) is fixedly provided with guide bar (214 b) of upwards arranging, the axial of guide bar (214 b) is on a parallel with the axial of support ring (214), guide bar (214 b) are provided with a plurality ofly and arrange along the circumferencial direction array that support ring (214) place, lower mill (204) cup joint on guide bar (214) and can slide from top to bottom along guide bar (214), the outside activity cover of guide bar (214) is equipped with supporting spring (215), supporting spring (215) one end is contradicted with support ring (214), the other end is contradicted with lower mill (204) and the elasticity of supporting spring (215) is the directional lower mill (204) of support ring (214) all the time.

6. A pre-crushable rice milling assembly as set forth in claim 1 wherein: adjustment mechanism (210) still including rotating lead screw (216) of erectting on spout (211), the axial of lead screw (216) is on a parallel with the interval direction between two sliders (212) of symmetrical arrangement, lead screw (216) are including forward screw section, reverse screw section and smooth section, wherein on one of them slider (212) cup joints the forward screw section of lead screw (216) and both constitute the threaded connection cooperation, another slider (212) cup joints on the reverse screw section of lead screw (216) and both constitute the threaded connection cooperation, the smooth section activity of lead screw (216) is passed and is smashed jar (201) and extend to outside and this end coaxial fixed is provided with hand wheel (217), two lead screws (216) deviate from and are provided with between hand wheel (217) one end and are used for connecting hold-in range subassembly (218) between both.

7. A pre-crushable rice milling assembly as set forth in claim 1 wherein: the drive mechanism (220) including main motor (221) of fixed mounting on mounting bracket (100), the output shaft axial of main motor (221) is on a parallel with the axial of main shaft (206), be provided with between main motor (221) and main shaft (206) bottom and be used for connecting belt drive assembly (222) between them, belt drive assembly (222) including coaxial fixed cup joint in the main belt pulley on main motor (211) output shaft, coaxial fixed cover connect in the driven pulleys on main shaft (206) bottom and set up in driving pulley and driven pulleys and be used for connecting the belt between them.

8. A pre-crushable rice milling assembly as set forth in claim 1 wherein: feed mechanism (230) including setting up funnel (231) in sealed top cap (203) top, be provided with between funnel (231) and the sealed bottom cap (203) vertical stereoplasm transition pipeline (232) that support funnel (231), transition pipeline (232) one end and the lower extreme opening switch-on of funnel (231), the other end and sealed top cap (203) switch-on, transition pipeline (232) are provided with horizontal gate (233) and gate (233) along the middle part position of its direction of height and run through the cross section of transition pipeline (232), be provided with in gate (233) and constitute movable plug and connect complex flashboard (234) rather than the constitution, flashboard (234) insert in gate (233), transition pipeline (232) break off, gate (233) are extracted out to flashboard (234), transition pipeline (232) switch on.

9. A pre-crushable rice milling assembly as set forth in claim 1 wherein: a rebound mechanism (250) for bouncing the falling rice upwards is also arranged in the crushing tank (201), the rebound mechanism (250) is positioned between the crushing knife (208) and the upper grinding disc (207) and is arranged close to the crushing knife (208), the rebounding mechanism (250) comprises a second mounting disc (251) which is coaxially and rotatably sleeved on the main shaft (206), rebounding plates (252) which extend outwards in the radial direction are arranged on the outer circular surface of the second mounting disc (251), the length direction of the rebounding plates (252) is arranged in the radial direction of the second mounting disc (251), the width of the rebounding plates is gradually widened outwards in the radial direction of the second mounting disc (251), the rebounding plates (252) are four and are arranged in an array mode in the circumferential direction where the second mounting disc (251) is located, rebounding inclined surfaces (253) are arranged on the sides of the rebounding plates (252) in the tangential direction parallel to the circumference where the second mounting disc (251) is located, and the areas of the upper end surfaces of the rebounding plates (252) are smaller than the areas of the lower end surfaces of the rebounding.

10. A pre-crushable rice milling assembly as set forth in claim 9 wherein: the rebounding mechanism (250) further comprises a reversing driving component for driving the second mounting disc (251) to rotate reversely, the reversing driving component is located between the second mounting disc (251) and the upper grinding disc (207), the reversing driving component comprises a first circular fixing frame (254) and a second circular fixing frame (255) which are coaxially and fixedly mounted on the inner circular surface of the crushing tank (201), the first fixing frame (254) and the second fixing frame (255) are arranged at intervals and penetrate through the hollow-out arrangement from top to bottom, a casing (256) fixedly connected with the first fixing frame (254) and the second fixing frame (255) is arranged between the first fixing frame (254) and the second fixing frame (255), the casing (256) is sleeved outside the main shaft (206), the reversing driving component further comprises a hollow transmission shaft (257) coaxially and rotatably sleeved outside the main shaft (206), one end of the transmission shaft (247) is coaxially and fixedly connected with the second mounting disc (251), the other end movably penetrates through the casing (256) to extend into the casing (256, the reversing driving member further comprises a driving gear (258 b) which is coaxially and fixedly sleeved on the main shaft (206), the driving gear (258 b) is located in the machine shell (256) and located below the driven gear (258 a), a transmission gear (259) which is axially vertical to the axial direction of the main shaft (206) is rotatably arranged on the inner wall of the machine shell (256), the transmission gear (259) is provided with two transmission gears which are symmetrically arranged along the axial direction of the main shaft (206), the driving gear (258 b), the driven gear (258 a) and the transmission gear (259) are all bevel gears, the driving gear (258 b) is meshed with the transmission gear (259), and the transmission gear (259) is meshed with the driven gear (258 a).