Rice hulling and milling combined machine

Abstract

The invention belongs to the technical field of grain processing, and particularly relates to a rice hulling and milling combined machine which comprises a feeding hopper used for containing rice to be processed; the downstream of the feeding hopper is sequentially provided with a single-linkage lifting device; a round roller primary screening device; a stone removing device; a duplex lifting device; a rice hulling device; a gravity screening device; a rice milling device; the downstream of the bran outlet end of the rice milling device is connected with a smashing device used for smashing rice bran. The combined rice hulling and milling machine has the beneficial effects that the processing from rice to white rice is gradually completed through the sequential cooperation of all devices at the downstream of the feeding hopper, the whole machine design is integrated, the processing process is smooth and stable, the occupied area of equipment is effectively reduced, meanwhile, manual operation is reduced, and the grain processing efficiency is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of grain processing, and particularly relates to a combined rice hulling and milling machine. Background Art

[0002] In the technical field of grain processing, a typical processing process requires the configuration of independent equipment units such as a cleaning sieve, a rice hulling machine, a rice milling machine, and a grading sieve. A safe operating distance of 3-5 meters needs to be maintained between each equipment, resulting in the floor area of a single production line generally exceeding 120 square meters. This discrete layout lengthens the time-consuming of the material transfer link, and 2-3 operators are required to continuously carry out material connection operations. This not only increases the floor area of the equipment, but also increases the labor intensity of the operators, and may also lead to human errors in production, resulting in risks of material spillage and cross-contamination, affecting production efficiency and product quality. Summary of the Invention

[0003] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a combined rice hulling and milling machine to solve the above problems.

[0004] The technical solution of the present invention is realized as follows: A combined rice hulling and milling machine, which includes a feed hopper for placing paddy to be processed; Downstream of the feed hopper are successively provided with: A single-stage lifting device for extracting paddy from the feed hopper; A round roller primary screening device connected to the output end of the single-stage lifting device for screening the paddy extracted by the single-stage lifting device; A stoner device connected to the output end of the round roller primary screening device for screening out stones mixed in the paddy; A double-stage lifting device, including a connecting pipe 1 and a connecting pipe 2 and a discharge pipe 1 and a discharge pipe 2 respectively corresponding to them. A receiving hopper 1 for receiving the paddy discharged from the stoner device is arranged at the bottom of the double-stage lifting device. The connecting pipe 1 is communicated with the receiving hopper 1 for extracting paddy in the receiving hopper 1; A rice hulling device, the feed inlet of the rice hulling device is located below the discharge pipe 1, for hulling the paddy extracted from the receiving hopper 1 to form a mixture of rice husks and brown rice; A gravity screening device for screening brown rice; A rice milling device for whitening and polishing the brown rice screened out by the gravity screening device, including a rice output end and a bran output end for outputting rice bran; Wherein, one side of the lower end of the connecting pipe 2 is communicated with the output end of the rice hulling device for extracting the mixture of rice husks and brown rice and conveying it to the gravity screening device. A crushing device is connected downstream of the bran output end of the rice milling device for crushing rice bran.

[0005] Further, the single-stage lifting device includes: Lower base one, within which there is a first rotating chamber; Upper base one, located above the lower base one, within which there is a second rotating chamber; Connecting pipe three; Connecting pipe four, connecting pipe three and connecting pipe four are connected between the first rotating chamber and the second rotating chamber; Among them, between the first rotating chamber and the second rotating chamber, there is a first conveyor belt, the first conveyor belt passes through connecting pipe three and connecting pipe four in sequence, the outer side of the lower end of connecting pipe three is communicated with the feed hopper, one side of the lower end of the upper base one is provided with a feeding pipe extending towards the circular roller primary screening device, and a number of loading strips for lifting paddy to the feeding port of the feeding pipe are circumferentially arranged on the outer side of the first conveyor belt.

[0006] Further, the circular roller primary screening device includes: Machine body, the upper end of the machine body is open; Cover plate, installed on one side of the machine body, one end of the cover plate is folded downwards to form a diversion inclined plane; Feeding cover, covering the upper end of the machine body; A feeding port for the connecting pipe to extend into is opened on the outer side of the feeding cover, and a diversion plate extending towards the diversion inclined plane is installed on the inner side of the feeding cover; Roller, arranged inside the machine body and horizontally arranged in the Y direction below the cover plate; Sieve holes, a number of sieve holes arranged in a circumferential array are provided on the radial outer side of the roller; Extension plate, slidably installed inside the machine body, one side of the extension plate is attached to the diversion inclined plane, the other side extends towards one side in the X direction of the roller, and there is a spacing between the lower end surface of the extension plate and the radial outer side of the roller; Inner attachment plate, installed on one inner side wall of the machine body and adjacent to and below the extension plate; Discharge port for residues, opened on the outer side of the machine body far from the inner attachment plate, the lower edge of the discharge port for residues is provided with a discharge plate extending towards the sieve cylinder, and the discharge plate is inclined upwards; Among them, a discharge port is arranged at the lower end inside the machine body for discharging the paddy passing through the sieve holes.

[0007] Further, the machine body further includes: Drive motor, installed on one outer side of the machine body; Roller rotating shaft, the roller is fixedly installed on the roller rotating shaft, and one end of the roller rotating shaft penetrates the machine body and is connected to the drive motor through belt drive; Baffle plate, oppositely arranged between the roller rotating shaft and the extension plate and located inside the roller; Among them, support plate bodies sleeved on the roller rotating shaft and rotatably connected to the roller rotating shaft are arranged on both sides of the baffle plate, and a weight component is arranged between the lower edges of the two support plate bodies.

[0008] Further, the husking device includes: Husking machine body; The rubber roll group includes a fixed rubber roll and an adjusting rubber roll arranged adjacent to each other. One ends of the fixed rubber roll and the adjusting rubber roll are respectively installed with a first rotating shaft and a second rotating shaft. The belt. One ends of the first rotating shaft and the second rotating shaft penetrate through the hulling machine body and are respectively installed with a first belt pulley and a second belt pulley. A third belt pulley is also installed on one side outside the hulling machine body. The belt sequentially passes through the upper edges of the second belt pulley, the upper edge of the first belt pulley, and the upper edge of the third belt pulley. The first fixing plate. The rubber roll group is arranged outside the first fixing plate. The second fixing plate. A receiving area for the first rotating shaft and the second rotating shaft to pass through is formed at an interval between the first fixing plate and the second fixing plate. The arc-shaped groove. Arc-shaped grooves are penetratingly formed on the opposite sides of the first fixing plate and the second fixing plate. The second rotating shaft is arranged through the two arc-shaped grooves. Wherein, a pushing device is arranged in the receiving area for driving the second rotating shaft to move in an arc-shaped trajectory in the arc-shaped groove in the direction of the first rotating shaft.

[0009] Furthermore, the double-link lifting device includes: The second lower machine base. A third rotating chamber and a fourth rotating chamber are arranged at intervals in the second lower machine base. The second upper machine base, located above the second lower machine base. A fifth rotating chamber and a sixth rotating chamber are arranged at intervals in the second upper machine base. The fifth connecting pipe. The first connecting pipe and the fifth connecting pipe are installed between the third rotating chamber and the fifth rotating chamber. The sixth connecting pipe. The second connecting pipe and the sixth connecting pipe are installed between the fourth rotating chamber and the sixth rotating chamber. The second conveyor belt, arranged between the third rotating chamber and the fifth rotating chamber. The second conveyor belt sequentially passes through the first connecting pipe and the fifth connecting pipe. The third conveyor belt, arranged between the fourth rotating chamber and the sixth rotating chamber. The third conveyor belt sequentially passes through the second connecting pipe and the sixth connecting pipe. Wherein, the second conveyor belt and the third conveyor belt have the same structure as the first conveyor belt.

[0010] Furthermore, the gravity screening device includes: The screen frame; The gravity screen box. Four layers of screens with gradually increasing density are arranged from top to bottom in the gravity screen box. The cam, rotatably installed on one side inside the screen frame. The cam is hinged with a swing arm on the outside of the gravity screen box to drive the gravity screen box to swing reciprocally. The polished brown rice discharge pipe; The paddy discharge pipe; The paddy and brown rice mixture discharge pipe; Among them, the clean brown rice discharge pipe, the rice discharge pipe and the rice-brown mixed discharge pipe are respectively installed on the outside of the gravity screen frame, one end of the clean brown rice discharge pipe extends to the feed end of the rice milling device, one end of the rice discharge pipe extends to the feed end of the rice husking device, and one end of the rice-brown mixed discharge pipe extends to the connecting pipe 2 of the double lifting device.

[0011] Furthermore, the rice milling device comprises: A polishing machine base is provided with a polishing chamber in the polishing machine base, and a polishing iron roller for polishing the brown rice is rotatably installed in the polishing chamber; The whitening machine base is installed on one side of the upper end of the polishing machine base, and a whitening chamber is arranged in the whitening machine base, and a whitening sand roller for whitening the brown rice is rotatably installed in the whitening chamber; Among them, a material receiving port 1 is opened on one side of the upper end of the whitening machine seat, a material receiving port 2 is opened on one side of the upper end of the polishing machine seat, a sand roller discharge port matching the material receiving port is opened on the outer side of the whitening machine seat, and a rice discharge nozzle is arranged on the outer side of the polishing machine seat.

[0012] Further, the whitening sand roller comprises: The sand roller shaft is rotatably installed in the whitening machine base; The whitening roller body is sleeved on the outside of the sand roller shaft; The rice screen cylinder body is sleeved on the outer side of the whitening roller body; A spiral conveying head 1 is installed outside the rotating shaft of the sand roller and is located below the material receiving port 1, and is used to convey the brown rice to between the rice screen cylinder 1 and the whitening roller body; The radial outer side of the whitening roller body is provided with a spiral groove, and the radial outer side of the whitening roller body is also provided with a flow guide groove and a plurality of flow guide holes; Polishing iron roller includes: The iron roller shaft is rotatably installed in the polishing chamber; The polishing roller body is sleeved on the outer side of the iron roller shaft; The second rice screen cylinder is sleeved on the outer side of the sand roller shaft; The second spiral conveying head is installed on the outer side of the sand roller shaft and is located below the second material receiving port, and is used for conveying the brown rice to between the second rice screen cylinder body and the polishing roller body.

[0013] Furthermore, the pulverizing device includes a pulverizer base and a shakron, and the pulverizer base includes: Crusher housing; The exhaust fan housing is located on one side outside the pulverizer housing; The first bearing seat is installed on the side of the exhaust fan housing away from the pulverizer housing; The fan shaft is installed in the bearing seat 1, and one end of the fan shaft passes through the bearing seat 1 and extends into the exhaust fan housing to be sleeved with an impeller shaft seat, on which an impeller assembly is installed; An air extraction hole is opened on the side of the air extraction fan housing away from bearing seat 1, and an air extraction pipeline is connected between the air extraction hole and the cyclone. Among them, an air inlet hole is opened on the side of the impeller assembly facing the air extraction hole, and there are gaps between the end of the fan rotating shaft and the air inlet hole, and between the end of the impeller shaft seat and the air inlet hole. Among them, a crushing chamber is arranged inside the crusher housing, a crushing rotor is installed in the crushing chamber, a rice bran receiving port is arranged on one side outside the crusher housing, a material extraction port is arranged on one side at the upper end of the crusher housing, a material extraction pipe is connected between the material extraction port and the cyclone, an air inlet is opened on the side of the upper end of the crusher housing away from the material extraction port, and an air inlet pipe is connected between the air inlet and the air outlet of the air extraction fan housing.

[0014] The beneficial effects of the present invention are as follows: The rice hulling and milling combined rice machine cooperates with each device downstream of the feed hopper in sequence to gradually complete the processing of paddy into white rice. The whole machine is designed integrally, the processing process is smooth and stable, effectively reducing the floor area of the equipment, while reducing manual operation and effectively improving the grain processing efficiency. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 Schematic diagram of the overall structure of the rice hulling and milling combined rice machine in the specific embodiment of the present invention Figure 1 ; Figure 2 Schematic diagram of the overall structure of the rice hulling and milling combined rice machine in the specific embodiment of the present invention Figure 2 ; Figure 3 Schematic diagram of the structure of the rotary primary sieve device in the specific embodiment of the present invention; Figure 4 Cross-sectional view of the rotary primary sieve device in the specific embodiment of the present invention; Figure 5 Cross-sectional view of the rice milling device in the specific embodiment of the present invention; Figure 6 Schematic diagram of the structure of the rice hulling device in the specific embodiment of the present invention Figure 1 ; Figure 7 Schematic diagram of the structure of the rice hulling device in the specific embodiment of the present invention Figure 2 ; Figure 8 Schematic diagram of the structure of the crushing device in the specific embodiment of the present invention; Figure 9 Cross-sectional view of the separation component in the specific implementation manner of the present invention. Specific implementation manner

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0018] In the description of the present application, it should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary embodiments according to the present application. For the convenience of description, the dimensions of each part shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0019] Embodiment 1: As Figures 1 to 9 shown, the present invention discloses a combined rice hulling and milling machine, which includes a feed hopper 1 for placing paddy to be processed; Downstream of the feed hopper 1 are successively provided with: A single-stage lifting device 2 for extracting paddy from the feed hopper 1; A round-roller primary screening device 3 connected to the output end of the single-stage lifting device 2 for screening the paddy extracted by the single-stage lifting device 2; A stone-removing device 4 connected to the output end of the round-roller primary screening device 3 for screening out the stones mixed in the paddy; A double-stage lifting device 5 includes a connecting pipe 1 and a connecting pipe 2 and a discharge pipe 1 and a discharge pipe 2 respectively corresponding to them. A receiving hopper 1 for receiving the paddy discharged from the stone-removing device is provided at the bottom of the double-stage lifting device 5. The connecting pipe 1 is communicated with the receiving hopper 1 for extracting the paddy in the receiving hopper 1; A rice hulling device 6, the feed inlet of the rice hulling device 6 is located below the discharge pipe 1, for hulling the paddy extracted from the receiving hopper 1 to form a mixture of rice husks and brown rice; A gravity screening device 7 for screening the brown rice; The rice milling device 8 whitens and polishes the paddy rice screened out by the gravity screening device 7, and includes a rice outlet end and a bran outlet end for discharging rice bran; Among them, one side of the lower end of the second connecting pipe communicates with the output end of the hulling device 6, and is used for extracting the mixture of rice husks and paddy rice to convey to the gravity screening device 7. A crushing device is connected downstream of the bran outlet end of the rice milling device 8 for crushing rice bran.

[0020] By adopting the above technical solution, the combined rice hulling and milling machine cooperates with the devices downstream of the feed hopper in sequence to gradually complete the processing of paddy rice into white rice. The whole machine is integrally designed, the processing process is smooth and stable, effectively reducing the floor area of the equipment, and at the same time reducing manual operation, effectively improving the grain processing efficiency.

[0021] Embodiment Two: This embodiment provides a combined rice hulling and milling machine, which has the following technical features in addition to the technical solution of the above embodiment.

[0022] Further, the single-chain lifting device 2 includes: The lower machine base one 200, and a rotating chamber one is arranged inside the lower machine base one 200; The upper machine base one 201 is located above the lower machine base one 200, and a rotating chamber two is arranged inside the upper machine base one 201; The third connecting pipe; the fourth connecting pipe, and the third connecting pipe and the fourth connecting pipe are connected between the rotating chamber one and the rotating chamber two; Among them, a conveyor belt one is arranged between the rotating chamber one and the rotating chamber two. The conveyor belt one passes through the third connecting pipe and the fourth connecting pipe in sequence. The outer side of the lower end of the third connecting pipe communicates with the feed hopper 1, and one side of the lower end of the upper machine base one 201 is provided with a feeding pipe extending towards the circular roller primary screening device 3. A plurality of loading bars for lifting the paddy rice to the feeding port of the feeding pipe are circumferentially arranged on the outer side of the conveyor belt one.

[0023] In the above technical solution, the feeding pipe communicates with the rotating chamber two; In the above technical solution, a conveying rotating shaft for driving the conveyor belt is arranged inside the upper machine base one in the lower machine base one; In the above technical solution, the height of the inlet end of the feeding pipe is higher than the height of the outlet end of the feeding pipe; By adopting the above technical solution, after the paddy rice is poured into the feed hopper, the paddy rice enters the third connecting pipe by gravity, then the conveyor belt starts, and the paddy rice is sent into the rotating chamber one through the loading bars, and then conveyed to the rotating chamber two along the fourth connecting pipe, and then the paddy rice passing through the rotating chamber two falls into the feeding pipe, and then by gravity, the paddy rice enters the circular roller primary screening equipment along the connecting pipe.

[0024] Embodiment Three: This embodiment provides a combined rice hulling and milling machine. In addition to the technical solutions of the above embodiment, it also has the following technical features.

[0025] Further, the circular rolling primary screening device 3 includes: The machine body 300, the upper end of the machine body 300 is open; The cover plate 301, installed on one side of the main body 300, one end of the cover plate 301 is folded downwards to form a diversion inclined plane; The feed cover, covering the upper end of the machine body 300; a feed port for the connecting pipe to extend is opened on the outer side of the feed cover, and a diversion plate 302 extending towards the diversion inclined plane is installed on the inner side of the feed cover; The drum 303, arranged inside the machine body 300 and horizontally arranged in the Y direction below the cover plate 301; The sieve holes, several sieve holes are arranged in a circumferential array on the radial outer side of the drum 303; The extension plate 304, slidably installed inside the machine body 300, one side of the extension plate 304 is attached to the diversion inclined plane, the other side extends towards one side in the X direction of the drum 303, and there is a distance between the lower end surface of the extension plate 304 and the radial outer side of the drum 303; The inner attachment plate 305, installed on one inner side wall of the machine body 300 and adjacent to and below the extension plate 304; The slag discharge port 306, opened on the outer side of the machine body 300 away from the inner attachment plate 305, the lower edge of the slag discharge port 306 is provided with a slag discharge plate extending towards the sieve cylinder 303, and the slag discharge plate is inclined upwards; Wherein, a discharge port is arranged at the lower end inside the machine body 300 for discharging the paddy passing through the sieve holes.

[0026] In the above technical solution, the rotation direction of the drum is counterclockwise; In the above technical solution, a diversion groove is also arranged on the outer side of the slag discharge port; In the above technical solution, a flat impurity removing sieve is also arranged between the discharge port and the stone removing device to remove relatively short straw stalks.

[0027] By adopting the above technical solution, the paddy entering the feed cover can flow sequentially along the diversion plate and the diversion inclined plane towards the right side of the drum, and the paddy passes through the sieve holes and then is discharged through the discharge port. The inner attachment plate is used to assist in guiding the flow direction, so that the paddy flows into the sieve holes, avoiding the paddy from being directly discharged along the gap between the right side of the drum and the main body. The function of the sieve holes is to allow the paddy to pass through, and at the same time block the straw stalks mixed in the paddy outside the drum; The straw stalks blocked outside the drum move to the left as the drum rotates. When the straw stalks are brought to the left by the drum, they fall onto the slag discharge plate by gravity and then are discharged from the slag discharge port along the slag discharge plate, which can effectively remove the straw stalks mixed in the paddy.

[0028] Example 4: This embodiment provides a combined rice hulling and milling machine. In addition to including the technical solutions of the above embodiments, it also has the following technical features.

[0029] Furthermore, the machine body 300 further includes: A driving motor, installed on one side outside the machine body 300; A roller rotating shaft 307, with a roller 303 fixedly installed on the roller rotating shaft 307. One end of the roller rotating shaft 307 penetrates the machine body 300 and is connected to the driving motor through belt drive; A baffle 308, oppositely arranged between the roller rotating shaft 307 and the extension plate 304 and located inside the roller 303; Wherein, both sides of the baffle 308 are provided with support plate bodies sleeved on the roller rotating shaft 307 and rotatably connected to the roller rotating shaft 307, and a counterweight assembly is arranged between the lower edges of the two support plate bodies.

[0030] In the above technical solution, a V-shaped connecting plate is arranged between the lower edges of the two support plate bodies, and the counterweight assembly is fixedly installed at the upper end of the V-shaped connecting plate. The counterweight assembly is a counterweight block with a certain mass, so that the baffle will not swing due to the rotation of the roller rotating shaft and the impact of paddy; By adopting the above technical solution, one side of the baffle faces the feeding area formed between the inner attaching plate and the extension plate, forming a blocking surface, so that the paddy will not splash towards the slag discharge port after passing through the roller.

[0031] Example 5: This embodiment provides a combined rice hulling and milling machine. In addition to including the technical solutions of the above embodiments, it also has the following technical features.

[0032] Furthermore, the rice hulling device 6 includes: A rice hulling machine body 600; A rubber roll group, including an adjacent fixed rubber roll and an adjustable rubber roll. One end of the fixed rubber roll and the adjustable rubber roll are respectively installed with a rotating shaft one and a rotating shaft two; A belt, one end of the rotating shaft one and the rotating shaft two penetrates the rice hulling machine body 600 and are respectively installed with a pulley one 601 and a pulley two 602. A pulley three 603 is also installed on one side outside the rice hulling machine body 600. The belt sequentially passes through the upper edge of the pulley two 602, the upper edge of the pulley one 601 and the upper edge of the pulley three 603; A fixing plate one 604, with the rubber roll group arranged outside the fixing plate one 604; A fixing plate two 605, with an accommodating area for the rotating shaft one and the rotating shaft two to pass through formed at an interval between the fixing plate one 604 and the fixing plate two 605; Arc-shaped groove 606, a through arc-shaped groove 606 is formed on the opposite sides of the first fixing plate 604 and the second fixing plate 605, and the second rotating shaft passes through the two arc-shaped grooves 606; Wherein, a pushing device is arranged in the accommodating area for driving the second rotating shaft to move upward along an arc-shaped trajectory in the arc-shaped groove 606 towards the first rotating shaft.

[0033] In the above technical solution, a rice hulling feed inlet is arranged above the rubber roller group; In the above technical solution, a sleeve is sleeved outside the second rotating shaft, a rotating bearing is arranged between the second rotating shaft and the sleeve, both ends of the sleeve pass through the two arc-shaped grooves respectively, connection blocks are fixedly installed on both upper ends of the sleeve located in the accommodating area, and a first rotating rod is rotatably installed between the two connection blocks; The pushing mechanism includes a second rotating rod rotatably installed between the accommodating areas, a pushing screw rod is connected to the second rotating rod through a thread, one end of the pushing screw rod is rotatably connected to the first rotating rod, a first limiting rod is installed at the lower edge of the accommodating cavity, and a second limiting rod extending obliquely upward to the left of the first limiting rod is arranged at the lower edge of the sleeve. In the above technical solution, a housing is arranged outside the rubber roller group, a discharge port is arranged on one side of the housing, and a separator and a big bran blower are installed on the discharge port for separating rice husks and brown rice; By adopting the above technical solution, paddy is fed into the rice hulling feed inlet through a double-link elevator, the rice husks of the paddy are separated by the rubber roller group, and then the rice husks are extracted and collected by the big bran blower. The separated brown rice is sent into the gravity screening device by the double-link lifting device for screening. When the rubber roller group is worn and the spacing is too large after long-term use of the equipment, through the setting of the arc-shaped groove and the pushing mechanism, when the pushing screw rod extends out, it pushes the second rotating rod, and then with the cooperation and limitation of the first limiting rod and the second limiting rod, the sleeve gradually rises along the arc-shaped edge of the arc-shaped groove and approaches the first rotating shaft at the same time, so that the fixed rubber roller and the adjusting rubber roller approach each other. At the same time, since the sleeve drives the second pulley to rise when it rises, the belt passing through the pulleys can be tightened, and there is no need to manually replace the belt.

[0034] Embodiment Six: This embodiment provides a rice hulling and milling combined machine, which has the following technical features in addition to the technical solution of the above embodiment.

[0035] Further, the double-link lifting device 5 includes: The lower machine base two, and rotating chambers three and four are arranged at intervals in the lower machine base two; The upper machine base two 500, located above the lower machine base two, and rotating chambers five and six are arranged at intervals in the upper machine base two 500; The connecting pipe five, and the connecting pipe one and the connecting pipe five are installed between the rotating chamber three and the rotating chamber five; Connecting pipe six, connecting pipe two and connecting pipe six are installed between the rotating chamber four and the rotating chamber six; Conveyor belt two, arranged between the rotating chamber three and the rotating chamber five, and conveyor belt two passes through connecting pipe one and connecting pipe five in sequence; Conveyor belt three, arranged between the rotating chamber four and the rotating chamber six, and conveyor belt three passes through connecting pipe two and connecting pipe six in sequence; Among them, conveyor belt two and conveyor belt three have the same structure as conveyor belt one.

[0036] In the above technical solution, a second receiving hopper for receiving the brown rice discharged by the separator is arranged at the lower end of the double-link lifting device, and one side of the connecting pipe two is communicated with the second receiving hopper for lifting the brown rice to the discharge pipe two and discharging it to the gravity screening device By adopting the above technical solution, the structural principle of the double-link lifting device is the same as that of the single-link lifting device, that is, a lifting device with two separate lifting pipelines. The two lifting pipelines can be respectively used for the feeding and conveying of the hulling device and the gravity screening device, which is simple and efficient, and greatly improves the rice processing efficiency.

[0037] Embodiment seven: This embodiment provides a hulling and milling combined rice machine, which has the following technical features in addition to the technical solution of the above embodiment.

[0038] Further, the gravity screening device 7 includes: Screen frame 700; Gravity sieve box 701, in which four layers of sieves with gradually increasing density are arranged from top to bottom; Cam, rotatably installed on one side inside the screen frame, and a swing arm is hinged between the cam and the outside of the gravity sieve box 701 to drive the gravity sieve box 701 to swing reciprocally; Net brown rice discharge pipe 702; Paddy rice discharge pipe 703; Paddy and brown rice mixed discharge pipe 704; Among them, the net brown rice discharge pipe 702, the paddy rice discharge pipe 703 and the paddy and brown rice mixed discharge pipe 704 are respectively installed on the outside of the gravity screen frame. One end of the net brown rice discharge pipe 702 extends towards the feeding end of the milling device 8, one end of the paddy rice discharge pipe 703 extends towards the feeding end of the hulling device 6, and one end of the paddy and brown rice mixed discharge pipe 704 extends towards the connecting pipe two of the double-link lifting device 5.

[0039] By adopting the above technical solution, the gravity sieve box is driven by a cam to swing, improving the gravity screening efficiency. The polished brown rice discharge pipe is used to convey the polished brown rice that has filtered out all other impurities to the rice milling device by gravity. The paddy discharge pipe conveys the unhulled paddy back to the hulling device for hulling again. The paddy and brown rice mixed discharge pipe is used to convey the separated brown rice and chaff mixture to the separator. The chaff is sucked away by the large chaff blower, and the brown rice falls back into the second receiving hopper and is then redrawn into the gravity sieve box for screening again.

[0040] Example Eight: This embodiment provides a combined rice hulling and milling machine, which, in addition to including the technical solution of the above embodiment, also has the following technical features.

[0041] Furthermore, the rice milling device 8 includes: A polishing machine base 800, with a polishing chamber 801 arranged inside. A polishing iron roller 802 for polishing brown rice is rotatably installed in the polishing chamber 801; A rice whitening machine base 803, installed on one side of the upper end of the polishing machine base 800. A rice whitening chamber 804 is arranged inside the rice whitening machine base 803. A rice whitening sand roller 805 for whitening brown rice is rotatably installed in the rice whitening chamber 804; Among them, a first material receiving port is opened on one side of the upper end of the rice whitening machine base 803, a second material receiving port is opened on one side of the upper end of the polishing machine base 800, a sand roller discharge port matching the material receiving port is opened on the outer side of the rice whitening machine base 803, and a rice outlet nozzle is arranged on the outer side of the polishing machine base 800.

[0042] By adopting the above technical solution, the polished brown rice separated by screening enters the rice whitening chamber through the first material receiving port and is whitened by the sand roller. Then, the whitened brown rice is sent into the polishing chamber through the sand roller discharge port and the second material receiving port for polishing. Finally, the processed white rice is output through the rice outlet nozzle.

[0043] Example Nine: This embodiment provides a combined rice hulling and milling machine, which, in addition to including the technical solution of the above embodiment, also has the following technical features.

[0044] Furthermore, the rice whitening sand roller 805 includes: A sand roller rotating shaft, rotatably installed in the rice whitening machine base 803; A rice whitening roller body 806, sleeved outside the sand roller rotating shaft; A first rice sieve cylinder 807, sleeved outside the rice whitening roller body 806; A first spiral conveying head 808, installed outside the sand roller rotating shaft and below the first material receiving port, for conveying brown rice to the space between the first rice sieve cylinder 807 and the rice whitening roller body 806; The radial outer side of the whitening roller body 806 is provided with a spiral groove, and the radial outer side of the whitening roller body 806 is also provided with a flow guide groove 809 and a plurality of flow guide holes 810; The polishing iron roller 802 comprises: The iron roller shaft is rotatably installed in the polishing chamber 801; The polishing roller body 811 is sleeved on the outer side of the iron roller shaft; The second rice screen cylinder 812 is sleeved on the outer side of the sand roller shaft; The second spiral conveying head 813 is installed on the outside of the sand roller shaft and is located below the second material receiving port, and is used to convey the brown rice to between the second rice screen cylinder 812 and the polishing roller body 811.

[0045] In the above technical solution, the rice screen cylinder is a cylinder structure surrounded by a plurality of arc-shaped rice screen plates, and a rice screen frame for supporting the arc-shaped rice screen plates is arranged in the whitening machine seat, which is convenient for disassembly and assembly; In the above technical solution, the second rice sieve cylinder is an octagonal cylinder, which is conducive to dispersing the brown rice, avoiding agglomeration, and can better polish the brown rice; In the above technical scheme, a rice bran blower is further arranged inside the polishing machine seat, an air inlet end of the rice bran blower is provided with a rice bran extraction pipe extending toward the bottom of the rice sieve cylinder body 1 and the rice sieve cylinder body 2, and an air outlet end of the rice bran blower is provided with a rice bran discharge pipe extending toward the crushing device, for delivering the separated rice bran to the crushing device for crushing and processing into fine bran; By adopting the above technical solution, the setting of the spiral groove facilitates the movement of brown rice in the rice sieve cylinder, and the setting of the flow guide groove and the flow guide hole is conducive to air circulation when the bran is extracted, and the whitening roller body is effectively cooled.

[0046] Embodiment ten: This embodiment provides a rice husking and milling combined rice machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0047] Furthermore, the pulverizing device includes a pulverizer base 900 and a pulverizer 901, and the pulverizer base 900 includes: Crusher housing 902; The exhaust fan housing 903 is located outside the pulverizer housing 902; A bearing seat 904 is installed on the side of the exhaust fan housing 903 away from the pulverizer housing 902; The fan shaft 905 is installed in the bearing seat 904, and one end thereof penetrates through the bearing seat 904 and extends into the exhaust fan housing 903 to be sleeved with an impeller shaft seat 906, on which an impeller assembly is installed; The exhaust hole is provided on the side of the exhaust fan housing 903 away from the bearing seat 904, and an exhaust pipe 908 is connected between the exhaust hole and the Shakron 901; Among them, an air inlet hole is provided on one side of the impeller assembly facing the air extraction hole, and there are clearances both between the end of the fan rotating shaft 905 and the air inlet hole and between the end of the impeller shaft seat 906 and the air inlet hole; Among them, a crushing chamber is provided inside the crusher housing 902, a crushing rotor is installed in the crushing chamber, a rice bran receiving port is provided on one side outside the crusher housing 902, a material extraction port is provided on one side of the upper end of the crusher housing 902, a material extraction pipe is connected between the material extraction port and the cyclone, an air inlet is provided on one side of the upper end of the crusher housing 902 away from the material extraction port, and an air inlet pipe 909 is connected between the air inlet and the air outlet of the exhaust fan housing 903.

[0048] By adopting the above technical solution, the rice bran enters the crushing chamber through the rice bran receiving port and contacts the crushing rotor. The crushing rotor rotates to crush the rice bran into fine bran. Subsequently, the fine bran is sucked into the cyclone through the material extraction pipe by the negative pressure generated by the rotation of the impeller assembly of the exhaust fan. A bran discharge door is hinged at the bottom of the cyclone. When the fine bran accumulated in the cyclone is greater than the air extraction suction force, the fine bran is discharged. Then, under the suction force, the bran discharge door closes. There are clearances both between the end of the fan rotating shaft and the air inlet hole and between the end of the impeller shaft seat and the air inlet hole, so that the dust passing through the air extraction hole accumulates on the fan rotating shaft and the impeller shaft seat, avoiding the blockage of the impeller assembly caused by long-term operation of the equipment and affecting the air extraction efficiency.

[0049] Example Eleven: This embodiment provides a rice hulling and milling combined rice machine, which, in addition to including the technical solutions of the above embodiments, further has the following technical features.

[0050] Furthermore, a separation assembly for separating the dust mixed in the rice husks is installed at the air outlet end of the big bran fan. The separation assembly includes: An air outlet pipe 1010, fixedly installed at the air outlet end of the big bran fan, and an annular groove 1011 is provided at the end of the air outlet pipe (1010) away from the big bran fan; A filter cartridge 1012, including a rotating part and a filtering part. One end of the rotating part is located in the annular groove 1011. A bolt connection part is provided on the right edge of the radial outer side of the rotating part, and an external thread matching the thread connection part is provided on the large-diameter groove wall of the annular groove 1011; A stepper motor, fixedly installed on the radial outer side of the air outlet pipe 1011. A driving gear is key-connected to the output shaft of the stepper motor. A plurality of long strip-shaped teeth are provided on the radial outer side of the rotating part for meshing with the driving gear. The plurality of long strip-shaped teeth are circumferentially spaced apart, and their length directions are parallel to the axial direction of the rotating part; A discharge cylinder 1013, sleeved outside the filter cartridge 1012. An air outlet 1014 is provided in the middle of the upper end of the discharge cylinder 1013, and a dust exhaust pipe 1015 is covered on the air outlet 1014 for connecting an external dust removal cloth bag; A material blocking column is provided at the bottom of the discharging cylinder 1013 and extends toward the filtering part. The material blocking column and the rotating part are spaced apart to form a filtering area. A discharge channel 1016 is provided at the lower edge of the right end of the blocking column and extends to the bottom thereof. A conveyor belt 4 having the same structure as the conveyor belt 1 is provided in the discharge channel 1016; The husk discharge pipe 1017 is installed on the radially outer side of the discharge barrel 1013 and is located below the discharge channel 1016. The husk discharge pipe 1017 and the discharge channel 1016 are communicated with each other; In this solution, a discharge motor is installed at the left end of the discharge barrel, and one end of the conveyor belt 4 passes through the discharge barrel 1013 and is transmission-connected to the discharge motor; In this solution, an arc-shaped guide plate is provided at the lower edge of the feed end of the discharge channel, and the front and rear sides of the arc-shaped guide plate abut against the filter screen; In this solution, the discharge barrel and the air outlet pipe are fixed by a detachable connection such as fasteners and bolts; By adopting the above technical scheme, when the husk mixed with dust is blown into the air outlet pipe by the large bran fan, and then enters the filtering area through the rotating part, since the air outlet is arranged above the discharge barrel, the air is discharged upward from the air outlet, and the small-sized dust is discharged through the filter screen, and the large-sized husk is blocked by the blocking column and the filter screen, and then falls into the arc-shaped guide plate under the action of gravity and enters the feed end of the discharge channel along the guide plate, and then is driven by the conveyor belt four to be discharged through the husk discharge pipe, and the carrying strip of the conveyor belt four will block the airflow from entering the discharge channel to prevent dust from entering and mixing; Through the setting of the stepper motor, the filter cartridge can be driven to rotate regularly when the equipment is running. Since the rotating part is threadedly connected to the air outlet pipe, the filter cartridge can be gradually moved toward the air outlet pipe, so that the filter cartridge part at the air outlet can be switched regularly, ensuring the dust filtering effect while extending the service life of the filter cartridge. The setting of the arc-shaped guide plate that resists the filter screen can scrape off some of the husks stuck on the filter cartridge as the filter cartridge rotates, effectively avoiding blockage.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A combined rice hulling and milling machine, characterized in that, The rice hulling and milling combined machine includes a feed hopper (1) for placing paddy to be processed; Downstream of the feed hopper (1), there are successively provided: A single-stage lifting device (2) for extracting paddy from the feed hopper (1); A round roller primary screening device (3) connected to the output end of the single-stage lifting device (2) for screening the paddy extracted by the single-stage lifting device (2); A stoner (4) connected to the output end of the round roller primary screening device (3) for screening out stones mixed in the paddy; A double-stage lifting device (5) including a first connecting pipe and a second connecting pipe, and a first discharge pipe and a second discharge pipe respectively corresponding to them. A first receiving hopper for receiving the paddy discharged from the stoner is arranged at the bottom of the double-stage lifting device (5). The first connecting pipe is communicated with the first receiving hopper for extracting the paddy in the first receiving hopper; A hulling device (6) with the feed inlet of the hulling device (6) located below the first discharge pipe for hulling the paddy extracted from the first receiving hopper to form a mixture of rice husks and brown rice; A gravity screening device (7) for screening the brown rice; A rice milling device (8) for whitening and polishing the brown rice screened out by the gravity screening device (7), including a rice output end and a bran output end for outputting rice bran; Among them, one side of the lower end of the second connecting pipe is communicated with the output end of the hulling device (6) for extracting the mixture of rice husks and brown rice and conveying it to the gravity screening device (7). A crushing device is connected downstream of the bran output end of the rice milling device (8) for crushing the rice bran.

2. The rice hulling and milling combined rice machine according to claim 1, characterized in that, The single-stage lifting device (2) includes: A lower machine base one (200) with a first rotating chamber arranged inside the lower machine base one (200); An upper machine base one (201) located above the lower machine base one (200) with a second rotating chamber arranged inside the upper machine base one (201); A third connecting pipe; a fourth connecting pipe, and the third connecting pipe and the fourth connecting pipe are connected between the first rotating chamber and the second rotating chamber; Among them, a first conveyor belt is arranged between the first rotating chamber and the second rotating chamber. The first conveyor belt passes through the third connecting pipe and the fourth connecting pipe in sequence. The outer side of the lower end of the third connecting pipe is communicated with the feed hopper (1). One side of the lower end of the upper machine base one (201) is provided with a feed pipe extending towards the round roller primary screening device (3). A plurality of loading bars for lifting the paddy to the feed inlet of the feed pipe are circumferentially arranged on the outer side of the first conveyor belt.

3. The rice hulling and milling combined rice machine according to claim 2, characterized in that, The round roller primary screening device (3) includes: A machine body (300) with the upper end of the machine body (300) being open; A cover plate (301) installed on one side of the main body (300), and one end of the cover plate (301) is folded downwards to form a guiding inclined surface; A feed cover covering the upper end of the machine body (300); a feed inlet for the connecting pipe to extend into is opened on the outer side of the feed cover, and a guiding plate (302) extending towards the guiding inclined surface is installed on one side inside the feed cover; A roller (303) arranged inside the machine body (300) and transversely arranged in the Y direction below the cover plate (301); Sieve holes, and a plurality of sieve holes arranged in a circumferential array are provided on the radial outer side of the roller (303); The extension plate (304) is slidably installed inside the machine body (300). One side of the extension plate (304) is in contact with the diversion inclined plane, and the other side extends to one side of the roller (303) in the X direction. There is a gap between the lower end surface of the extension plate (304) and the radial outside of the roller (303). The inner sticker plate (305) is installed on one inner side wall of the machine body (300), and is located below and adjacent to the extension plate (304). The slag discharge port (306) is opened on one side of the machine body (300) away from the inner sticker plate (305). The lower edge of the slag discharge port (306) is provided with a slag discharge plate extending towards the sieve cylinder (303), and the slag discharge plate is inclined upwards. Among them, a discharge port is provided at the lower end inside the machine body (300) for discharging the paddy passing through the sieve holes.

4. The rice hulling and milling combined rice machine according to claim 3, characterized in that, The machine body (300) further includes: A driving motor is installed on one side outside the machine body (300). The roller rotating shaft (307), the roller (303) is fixedly installed on the roller rotating shaft (307), and one end of the roller rotating shaft (307) penetrates the machine body (300) and is connected to the driving motor through a belt drive. The baffle plate (308) is oppositely arranged between the roller rotating shaft (307) and the extension plate (304), and is located inside the roller (303). Among them, both sides of the baffle plate (308) are provided with support plate bodies sleeved on the roller rotating shaft (307) and rotatably connected to the roller rotating shaft (307), and a counterweight assembly is arranged between the lower edges of the two support plate bodies.

5. A rice hulling and milling combined rice machine according to claim 1, characterized in that, The husking device (6) includes: The husking machine body (600); The rubber roll group includes an adjacent fixed rubber roll and an adjustable rubber roll. One end of the fixed rubber roll and the adjustable rubber roll are respectively installed with a rotating shaft one and a rotating shaft two. The belt, one end of the rotating shaft one and the rotating shaft two penetrates the husking machine body (600) and are respectively installed with a pulley one (601) and a pulley two (602). A pulley three (603) is also installed on one side outside the husking machine body (600). The belt sequentially passes through the upper edge of the pulley two (602), the upper edge of the pulley one (601) and the upper edge of the pulley three (603). The fixing plate one (604), the rubber roll group is arranged outside the fixing plate one (604). The fixing plate two (605), an accommodating area for the rotating shaft one and the rotating shaft two to pass through is formed at an interval between the fixing plate one (604) and the fixing plate two (605). The arc-shaped groove (606), the arc-shaped groove (606) is penetratedly opened on the opposite side of the fixing plate one (604) and the fixing plate two (605), and the rotating shaft two passes through the two arc-shaped grooves (606). Among them, a pushing device is arranged in the accommodating area for driving the rotating shaft two to move in an arc-shaped trajectory towards the rotating shaft one direction in the arc-shaped groove (606).

6. The rice hulling and milling combined rice machine according to claim 1, characterized in that, The double-link lifting device (5) includes: The lower machine base two, the rotating chamber three and the rotating chamber four are arranged at intervals inside the lower machine base two. The upper machine base two (500), which is located above the lower machine base two. The rotating chamber five and the rotating chamber six are arranged at intervals inside the upper machine base two (500). The connecting pipe five, the connecting pipe one and the connecting pipe five are installed between the rotating chamber three and the rotating chamber five. The connecting pipe six, the connecting pipe two and the connecting pipe six are installed between the rotating chamber four and the rotating chamber six. The second conveyor belt is arranged between the third rotating chamber and the fifth rotating chamber, and the second conveyor belt passes through the first connecting pipe and the fifth connecting pipe in sequence; The third conveyor belt is arranged between the fourth rotating chamber and the sixth rotating chamber, and the third conveyor belt passes through the second connecting pipe and the sixth connecting pipe in sequence; Among them, the second conveyor belt and the third conveyor belt have the same structure as the first conveyor belt.

7. The rice hulling and milling combined rice machine according to claim 6, characterized in that, The gravity screening device (7) includes: A sieve frame (700); A gravity sieve box (701), in which four layers of sieves with gradually increasing density are arranged from top to bottom; A cam, rotatably installed on one side inside the sieve frame, and the cam is hinged with a swing arm on the outside of the gravity sieve box (701) to drive the gravity sieve box (701) to swing reciprocally; A polished brown rice discharge pipe (702); A paddy discharge pipe (703); A paddy-brown rice mixed discharge pipe (704); Among them, the polished brown rice discharge pipe (702), the paddy discharge pipe (703) and the paddy-brown rice mixed discharge pipe (704) are respectively installed on the outside of the gravity sieve frame. One end of the polished brown rice discharge pipe (702) extends towards the feeding end of the rice milling device (8), one end of the paddy discharge pipe (703) extends towards the feeding end of the hulling device (6), and one end of the paddy-brown rice mixed discharge pipe (704) extends towards the second connecting pipe of the double-link lifting device (5).

8. The rice hulling and milling combined rice machine according to claim 1, characterized in that, The rice milling device (8) includes: A polishing machine base (800), in which a polishing chamber (801) is arranged, and a polishing iron roller (802) for polishing brown rice is rotatably installed in the polishing chamber (801); A rice whitening machine base (803), installed on one side of the upper end of the polishing machine base (800), in which a rice whitening chamber (804) is arranged, and a rice whitening sand roller (805) for whitening brown rice is rotatably installed in the rice whitening chamber (804); Among them, a first material receiving port is opened on one side of the upper end of the rice whitening machine base (803), a second material receiving port is opened on one side of the upper end of the polishing machine base (800), a sand roller discharge port matching the material receiving port is opened on the outside of one side of the rice whitening machine base (803), and a rice outlet is arranged on the outside of one side of the polishing machine base (800).

9. The hulling and milling combined rice machine according to claim 1, wherein, The rice whitening sand roller (805) includes: A sand roller rotating shaft, rotatably installed in the rice whitening machine base (803); A rice whitening roller body (806), sleeved on the outside of the sand roller rotating shaft; A first rice sieve cylinder body (807), sleeved on the outside of the rice whitening roller body (806); A first spiral conveying head (808), installed on the outside of the sand roller rotating shaft and below the first material receiving port, for conveying brown rice to between the first rice sieve cylinder body (807) and the rice whitening roller body (806); Among them, spiral grooves are formed on the radial outside of the rice whitening roller body (806), and a flow guiding groove (809) and a number of flow guiding holes (810) are also formed on the radial outside of the rice whitening roller body (806); The polishing iron roller (802) includes: An iron roller rotating shaft, rotatably installed in the polishing chamber (801); A polishing roller body (811), sleeved on the outside of the iron roller rotating shaft; A second rice sieve cylinder body (812), sleeved on the outside of the sand roller rotating shaft; A second spiral conveying head (813), installed on the outside of the sand roller rotating shaft and below the second material receiving port, for conveying brown rice to between the second rice sieve cylinder body (812) and the polishing roller body (811).

10. A rice hulling and milling combined rice machine according to claim 1, characterized in that, The pulverizing device comprises a pulverizing base (900) and a shakron (901), wherein the pulverizing base (900) comprises: Crusher housing (902); The exhaust fan housing (903) is located on one side outside the pulverizer housing (902); A bearing seat 1 (904) is installed on a side of the exhaust fan housing (903) facing away from the pulverizer housing (902); The fan shaft (905) is installed in the bearing seat (904), and one end of the fan shaft (905) passes through the bearing seat (904) and extends into the exhaust fan housing (903) to be sleeved with an impeller shaft seat (906), and an impeller assembly is installed on the impeller shaft seat (906); An exhaust hole is provided on a side of the exhaust fan housing (903) away from the first bearing seat (904), and an exhaust pipe (908) is connected between the exhaust hole and the shakron (901); An air inlet hole is provided on one side of the impeller assembly facing the air extraction hole, and a spacing is provided between the end of the fan shaft (905) and the air inlet hole, and between the end of the impeller shaft seat (906) and the air inlet hole; A grinding chamber is provided in the grinding machine housing (902), a grinding rotor is installed in the grinding chamber, a rice bran receiving port is provided on the outer side of the grinding machine housing (902), a material extraction port is provided on the upper side of the grinding machine housing (902), a material extraction pipe is connected to the material extraction port and the shakron, an air inlet is provided on the upper side of the grinding machine housing (902) away from the material extraction port, and an air inlet pipe (909) is connected between the air inlet and the air outlet of the exhaust fan housing (903).

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