阅读说明：本技术 一种大米加工工艺 (Rice processing technology ) 是由 杨俊杰 秦家国 于 2020-05-29 设计创作，主要内容包括：本申请涉及谷物加工技术领域,具体公开了一种大米加工工艺,包括初清、去石、砻谷、筛分、碾米和抛光,筛分使用如下大米加工装置,大米加工装置包括机架、传送带、吸尘装置和接料槽,传送带沿水平方向传送；吸尘装置固定在机架上并且位于传送带的正上方；接料槽位于第二带轮的远离第一带轮的一侧并且位于第二带轮的下方,接料槽内部设置有米槽和稻壳槽；机架上固定有鼓风机,鼓风机的吹出的风依次经过米槽和稻壳槽的上方。本专利的目的在于解决现有的大米加工工艺中在砻谷后需要分步单独进行稻壳的去除以及除尘,导致操作繁杂,操作效率低下的问题。(The application relates to the technical field of grain processing, and particularly discloses a rice processing technology which comprises the steps of preliminary cleaning, stone removal, rice hulling, screening, rice milling and polishing, wherein the following rice processing device is used for screening, the rice processing device comprises a rack, a conveyor belt, a dust suction device and a material receiving groove, and the conveyor belt conveys along the horizontal direction; the dust collection device is fixed on the rack and is positioned right above the conveyor belt; the material receiving groove is positioned on one side of the second belt wheel, which is far away from the first belt wheel, and is positioned below the second belt wheel, and a rice groove and a rice hull groove are arranged in the material receiving groove; an air blower is fixed on the frame, and air blown out by the air blower passes through the rice groove and the rice hull groove in sequence. The purpose of this patent is to solve and need to carry out the getting rid of and the dust removal of rice husk alone step by step after rice hulling among the current rice processing technology, lead to the operation miscellaneous, problem that operating efficiency is low.)

1. A rice processing technology comprises the steps of primary cleaning, stone removal, rice hulling, screening, rice milling and polishing, and is characterized in that a rice processing device is used for screening, the rice processing device comprises a rack, a conveyor belt, a dust suction device and a material receiving groove, the conveyor belt is conveyed along the horizontal direction, the conveyor belt is driven by a first belt wheel and a second belt wheel, and the conveyor belt is conveyed from the first belt wheel to the second belt wheel; the dust collection device is fixed on the rack and is positioned right above the conveyor belt, and a suction head of the dust collection device faces the upper end face of the conveyor belt; the material receiving groove is positioned on one side, far away from the first belt wheel, of the second belt wheel and is positioned below the second belt wheel, a partition plate is fixed inside the material receiving groove, the partition plate divides the inside of the material receiving box into a rice groove and a rice hull groove, and the distances between the rice groove and the second belt wheel and the distances between the rice hull groove and the second belt wheel are sequentially increased; and an air blower is fixed on the frame and positioned below the second belt wheel, and air blown out by the air blower passes through the rice groove and the rice hull groove in sequence.

The screening comprises the following specific steps:

the method comprises the following steps: starting the conveyor belt, and adjusting the conveying speed of the conveyor belt to be 0.5-1 m/s;

step two: in one period of conveying by the conveying belt, continuously adding 5-10kg of husked rice on the conveying belt in the first half of conveying, and uniformly distributing the rice on the conveying belt; opening the dust collection device, setting the negative pressure of a suction head of the dust collection device to be capable of sucking dust into the dust collection device and adsorbing rice hulls on the suction head, enabling the rice grains to still stay on the conveying belt, and enabling the rice grains to fall into the rice groove when the rice grains move to the position above the top of the second belt wheel;

step three: the conveying belt in the latter half of the conveying belt is unloaded, the rice husk on the suction head of the dust suction device is scraped and falls on the conveying belt;

step four: the whole brown rice is separated from the crushed brown rice using a crushed rice separator.

2. The rice processing technology according to claim 1, characterized in that: in the second step, the rice husks on the suction head of the dust collection device are automatically scraped off through the back half of the conveyor belt, and the following equipment is adopted: the lower end of the suction head is fixedly connected with a bent pipe, the bent pipe comprises a hard pipe part and a soft pipe part, the upper end of the hard pipe part is fixedly communicated with the suction head, the lower end of the hard pipe part is fixedly communicated with the upper end of the soft pipe part, and the soft pipe part can be bent towards the hard pipe part to seal the middle part of the bent pipe; an extrusion block is fixed on the rear half of the conveyor belt, and when the rear half of the conveyor belt passes below the bent pipe, the extrusion block can extrude the soft pipe part to enable the soft pipe part to be bent towards the hard pipe part and plug the middle part of the bent pipe; when the extrusion block moves to exceed the bent pipe, the hose part resets.

3. The rice processing technology according to claim 2, characterized in that: the cross section of the extrusion block is trapezoidal.

4. The rice processing technology according to claim 1, characterized in that: automatically adding the husked brown rice on the conveying belt through the rice storage bin in the step two, and adopting the following equipment: the rice storage bin is fixed on the rack and is fixed right above the first belt wheel, the automatic valve is arranged at the bottom of the rice storage bin, the infrared receiver is fixed on the side wall of the rice storage bin, the two infrared transmitters are arranged on the conveyor belt, the distance between the two infrared transmitters is half of the length of the conveyor belt, the automatic valve, the infrared receivers and the 2 infrared transmitters are electrically connected with the same controller, and when the infrared receivers receive signals transmitted by one of the infrared transmitters, the controller controls the automatic valve to be opened; when the infrared receiver receives a signal transmitted by another infrared transmitter, the controller controls the automatic valve to close.

5. The rice processing technology according to claim 4, characterized in that: the rice grain after rice hulling is only fallen on the first half of conveyer belt through the conveyer belt, adopts following equipment: the front half of the conveyor belt is evenly fixed with stoppers vertical to the conveyor belt at intervals, and rice grains fall between the stoppers when being added to the conveyor belt.

6. The rice processing technology according to claim 1, characterized in that: in the step two, the first half horizontal transport of conveyer belt is vibration from top to bottom simultaneously, and the first half of conveyer belt vibrates the rice grain, and the latter half of conveyer belt is horizontal transport only in the step three, scrapes the rice husk on the suction head off, adopts following equipment: the first belt wheel and the second belt wheel are respectively driven by one second motor, the two second motors are symmetrically fixed on a connecting rod arranged along the horizontal direction, a fixed block arranged along the vertical direction is fixed on the rack, a T-shaped sliding groove arranged along the vertical direction is formed in the fixed block, the fixed block is provided with two T-shaped sliding grooves of the two fixed blocks, the T-shaped sliding grooves of the two fixed blocks are arranged oppositely, the connecting rod is in a cuboid shape, a T-shaped sliding block matched with the T-shaped sliding groove is respectively fixed at the left end and the right end of the connecting rod, and the T-shaped sliding block is clamped in the T-shaped sliding groove and can; the lower end of the connecting rod is fixed with a mandril which is arranged along the vertical direction; the rack is rotatably connected with a cam, the cam is driven by a first motor, the front half circle of the edge of the cam is arc-shaped, and grooves are uniformly arranged on the rear half circle of the edge of the cam at intervals; the lower end of the ejector rod is attached to the contour of the cam, and the cam rotates to drive the ejector rod to keep vertical and move up and down.

Technical Field

The invention relates to the technical field of grain processing, in particular to a rice processing technology.

Background

The rice is staple food of southern people, and the high-quality rice can be obtained by processing through a plurality of steps in order to obtain the high-quality rice. In the rice processing, firstly, paddy is screened, good paddy is selected, then preliminary cleaning is carried out, stones in the paddy are removed, and the situation that the paddy is doped with the stones is avoided. And then husking rice to remove the husks of the rice, separating the husked rice into rice husks and rice, and magnetically separating the rice separated from the rice husks to remove metal chips and other magazines in the rice. The rice discharged with impurities is coarsely ground and finely ground. And finally, polishing the rice and finally packaging.

In the rice hulling, broken brown rice of rice is easily generated to reduce the grade of the rice, so that the quality of the rice is reduced. And rice husks are also removed during rice hulling. The conventional rice hulling equipment usually has a lot of rice husks remained in rice, the rice husks can be completely removed only by carrying out secondary processing, the working efficiency is reduced by the secondary processing, and a lot of smashed rice husks still exist in the rice. The dust contained in the husked rice after hulling also needs to be removed.

Therefore, in the existing rice processing technology, rice husks are required to be removed and dedusted separately step by step after rice hulling, so that the operation is complicated and the operation efficiency is low.

Disclosure of Invention

Aiming at the defects in the prior art, the technical problem to be solved by the invention is to provide a rice processing technology, and solve the problems of complicated operation and low operation efficiency caused by the fact that rice hulls are required to be separately removed and dedusted step by step after rice hulling in the prior rice processing technology.

In order to solve the problems, the technical scheme adopted by the invention is as follows: a rice processing technology comprises the steps of primary cleaning, stone removal, rice hulling, screening, rice milling and polishing, wherein the screening uses a rice processing device which comprises a rack, a conveyor belt, a dust suction device and a material receiving groove, the conveyor belt is conveyed along the horizontal direction, the conveyor belt is driven by a first belt wheel and a second belt wheel, and the conveyor belt is conveyed from the first belt wheel to the second belt wheel; the dust collection device is fixed on the rack and is positioned right above the conveyor belt, and a suction head of the dust collection device faces the upper end face of the conveyor belt; the material receiving groove is positioned on one side, far away from the first belt wheel, of the second belt wheel and is positioned below the second belt wheel, a partition plate is fixed inside the material receiving groove, the partition plate divides the inside of the material receiving box into a rice groove and a rice hull groove, and the distances between the rice groove and the second belt wheel and the distances between the rice hull groove and the second belt wheel are sequentially increased; and an air blower is fixed on the frame and positioned below the second belt wheel, and air blown out by the air blower passes through the rice groove and the rice hull groove in sequence.

The screening comprises the following specific steps:

the method comprises the following steps: starting the conveyor belt, and adjusting the conveying speed of the conveyor belt to be 0.5-1 m/s;

step two: in one period of conveying by the conveying belt, continuously adding 5-10kg of husked rice on the conveying belt in the first half of conveying, and uniformly distributing the rice on the conveying belt; opening the dust collection device, setting the negative pressure of a suction head of the dust collection device to be capable of sucking dust into the dust collection device and adsorbing rice hulls on the suction head, enabling the rice grains to still stay on the conveying belt, and enabling the rice grains to fall into the rice groove when the rice grains move to the position above the top of the second belt wheel;

step three: the conveying belt in the latter half of the conveying belt is unloaded, the rice husk on the suction head of the dust suction device is scraped and falls on the conveying belt;

step four: the whole brown rice is separated from the crushed brown rice using a crushed rice separator.

The technical principle of the technical scheme is as follows: in the process of screening rice, in one period of conveying of the conveying belt, the first half of conveying is after the husked rice is uniformly distributed on the conveying belt, when the husked rice passes through the lower part of the dust suction device, the dust suction device sucks dust into the dust suction device, the dust suction device sucks the rice husk onto the suction head, rice grains still stay on the conveying belt, and when the rice grains move to the upper part of the top of the second belt wheel, the rice grains naturally drop off; the second half-way conveyer belt that the conveyer belt conveyed is empty load, scrapes off the rice husk on dust extraction's suction head and drop on the conveyer belt, and when the rice husk moved to the top at second band pulley top, the rice husk dropped naturally, and because the weight of rice husk is less than the rice grain, therefore the wind that the air-blower blew off made rice husk horizontal motion's distance great than the rice husk, and the rice husk dropped and gets into in the rice husk groove to dust, rice husk and rice grain separate.

The beneficial effect that this scheme produced is:

1. compared with the prior rice processing technology, the rice hull removal, the screening of the broken brown rice and the dust removal are separately carried out step by step after the rice hulling, the operation is complicated, and the operation efficiency is low; after the husked brown rice is added onto the conveyor belt in the scheme, when the rice passes through the dust suction device, the dust suction device sucks dust into the dust suction device and sucks rice hulls onto the suction head, and when the rice grains move to the position above the top of the second belt wheel, the rice grains naturally fall into the rice groove; the conveying belt in the latter half of conveying of the conveying belt is unloaded, the rice hulls on the suction head of the dust suction device are scraped and fall on the conveying belt, and when the rice hulls move to the position above the top of the second belt wheel, the rice hulls naturally fall into the rice hull box; thereby the screening of rice husk, dust and grain of rice is once only realized, easy operation, and operating efficiency is high.

2. Compared with the prior rice processing technology that the husked brown rice is naturally fallen down and the dust in the rice is blown away by the air blower, the rice husk and the dust are not easy to separate, and the use of the subsequent rice husk is influenced; and separate dust, rice husk and rice grain alone in this application scheme, make things convenient for subsequent use of rice husk.

3. Compared with the existing rice processing technology in which the dust suction device adsorbs rice hulls and dust, if the rice hulls and the dust are separated, a suction head of the dust suction device is easily blocked by the rice hulls, so that the rice hulls cannot be continuously sucked and sucked, the rice hulls need to be manually cleaned, and the cleaned rice hulls are inconvenient to collect; and make the rice husk fall on the conveyer belt in the latter half-cycle of conveyer belt in this application scheme, when the rice husk moved to the top at second band pulley top, the rice husk dropped into in the rice husk case under the wind-force effect of air-blower.

Further, in the second step, the rice husk on the suction head of the dust suction device is automatically scraped off through the back half-way of the conveyor belt, and the following equipment is adopted: the lower end of the suction head is fixedly connected with a bent pipe, the bent pipe comprises a hard pipe part and a soft pipe part, the upper end of the hard pipe part is fixedly communicated with the suction head, the lower end of the hard pipe part is fixedly communicated with the upper end of the soft pipe part, and the soft pipe part can be bent towards the hard pipe part to seal the middle part of the bent pipe; an extrusion block is fixed on the rear half of the conveyor belt, and when the rear half of the conveyor belt passes below the bent pipe, the extrusion block can extrude the soft pipe part to enable the soft pipe part to be bent towards the hard pipe part and plug the middle part of the bent pipe; when the extrusion block moves to exceed the bent pipe, the hose part resets.

When the rear half of the conveying belt passes below the bending pipe, the extrusion block can extrude the soft pipe part to enable the soft pipe part to be bent towards the hard pipe part and block the middle part of the bending pipe, so that the rice hulls automatically fall on the conveying belt, and the conveying belt conveys the rice hulls to a second belt wheel; when the squeezing block moves to exceed the bent pipe, the hose part is reset, so that the suction pipe can adsorb dust and rice hulls in the rice again in the next period.

Furthermore, the cross section of the extrusion block is trapezoidal, so that the hose can be conveniently extruded.

Further, the husked rice is automatically added to the conveying belt through the rice storage bin in the step two, and the following equipment is adopted: the rice storage bin is fixed on the rack and is fixed right above the first belt wheel, the automatic valve is arranged at the bottom of the rice storage bin, the infrared receiver is fixed on the side wall of the rice storage bin, the two infrared transmitters are arranged on the conveyor belt, the distance between the two infrared transmitters is half of the length of the conveyor belt, the automatic valve, the infrared receivers and the 2 infrared transmitters are electrically connected with the same controller, and when the infrared receivers receive signals transmitted by one of the infrared transmitters, the controller controls the automatic valve to be opened; when the infrared receiver receives a signal transmitted by another infrared transmitter, the controller controls the automatic valve to close.

The automatic valve in the first half of the conveyor belt is opened, and the rice in the rice outlet bin automatically falls onto the conveyor belt; and in the latter half of the conveying belt, the automatic valve is closed, and the rice outlet bin does not automatically add rice to the conveying belt any more.

Further, the rice grain after hulling is only fallen on the first half of conveyer belt through the conveyer belt, adopts following equipment: the front half of the conveyor belt is evenly fixed with stoppers vertical to the conveyor belt at intervals, and rice grains fall between the stoppers when being added to the conveyor belt.

Preventing the rice added to the conveyor belt from being piled up due to inertia force; and avoid adding the rice at every turn when ending to soon, the in-process that the rice just dropped on the conveyer belt because inertia leads to rice and rice husk to mix on sliding to the second half of conveyer belt, and the effect of dog is that the rice that promotes just dropping on the conveyer belt makes the rice overcome the effect of inertial force to evenly distributed is on the first half of conveyer belt.

Further, in step two, the first half horizontal transport of conveyer belt is vibration from top to bottom simultaneously, and the first half of conveyer belt vibrates the rice grain, and the latter half of conveyer belt is horizontal transport only in step three, scrapes the rice husk on the suction head off, adopts following equipment: the first belt wheel and the second belt wheel are respectively driven by one second motor, the two second motors are symmetrically fixed on a connecting rod arranged along the horizontal direction, a fixed block arranged along the vertical direction is fixed on the rack, a T-shaped sliding groove arranged along the vertical direction is formed in the fixed block, the fixed block is provided with two T-shaped sliding grooves of the two fixed blocks, the T-shaped sliding grooves of the two fixed blocks are arranged oppositely, the connecting rod is in a cuboid shape, a T-shaped sliding block matched with the T-shaped sliding groove is respectively fixed at the left end and the right end of the connecting rod, and the T-shaped sliding block is clamped in the T-shaped sliding groove and can; the lower end of the connecting rod is fixed with a mandril which is arranged along the vertical direction; the rack is rotatably connected with a cam, the cam is driven by a first motor, the front half circle of the edge of the cam is arc-shaped, and grooves are uniformly arranged on the rear half circle of the edge of the cam at intervals; the lower end of the ejector rod is attached to the contour of the cam, and the cam rotates to drive the ejector rod to keep vertical and move up and down.

The conveyor belt transmits one cycle, and the cam rotates one circle; in the front half of the conveying belt, the rear half ring of the cam is in contact with the ejector rod, so that the ejector rod reciprocates up and down under the action of the cam and gravity, and the two first motors and the connecting rod and the ejector rod reciprocate up and down synchronously, so that the first belt wheel, the second belt wheel, the conveying belt and the ejector rod reciprocate up and down synchronously, rice on the conveying belt vibrates, and dust and rice husks in the rice are adsorbed by the dust collection device conveniently;

the half back of conveyer belt, the preceding half circle and the ejector pin contact of cam, the conveyer belt can only follow the horizontal direction conveying like this to ensure that the extrusion piece can extrude the hose, ensure that the adsorbed rice husk can all drop to on the conveyer belt on the hose.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is a structural schematic diagram of the cam.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a conveyor belt 10, a first belt pulley 111, a second belt pulley 112, a first infrared emitter 121, a second infrared emitter 122, a stop block 13, an extrusion block 14, a rice storage bin 20, an automatic valve 21, an infrared receiver 22, a Venturi tube 30, a dust exhaust tube 31, a dust suction tube 32, a hard tube part 33, a hose part 34, a fixing plate 35, a material receiving groove 40, a rice groove 401, a rice husk groove 402, a second inclined surface 41, a partition plate 42, a blower 43, an air pipe 44, a first motor 50, a cam 51, a semi-circular arc 52, a groove 53, a push rod 54, a connecting rod 55, a second motor 56, a fixing block 57, a T-shaped sliding groove 58 and a T-shaped sliding block 59.