CN101167541A - A kind of automatic instant rice noodle production line and its production process - Google Patents

Abstract

A production line for instant instant rice noodles and its production process, a production line for instant instant rice noodles, comprising a rice processing device, a steaming and beating machine, a self-cooking and extruding device, an aging aging device, a quantitative cutting device, an input Box shaping device, powder block drying device, powder block cooling device, packaging and conveying device. The aging aging device consists of a rice vermicelli freezer, an aging aging machine, and a continuous silk loosening machine. It has the following advantages: high product quality, wide adaptability, high efficiency and automation, low consumption and energy saving, high yield rate, sanitation and environmental protection.

Description

A kind of automatic instant rice noodle production line and its production process

technical field

The invention relates to a processing device for instant instant rice noodles and a production process thereof, in particular to a fully automatic processing equipment for instant instant rice noodles and a production process thereof.

Background technique

Instant instant rice noodles have the advantage of being easy to eat and are very popular. The existing production process of instant instant rice noodles is manual production or semi-manual and semi-automatic production. There are two production processes. One process includes: rice transportation-rice polishing-specific gravity sand removal-jet washing-rice separation- Refining and screening-vacuum dehydration-delayed conveying-adding starch, cooking and stirring-making dough ball extrusion-powder conveying-high pressure extrusion-vermicelli re-steaming-vermicelli cooling aging-artificial pine silk-quantitative cutting-boxing and sorting -Dehydration and drying-Powder blocks are air-cooled-Packed into bags. Some technicians also proposed the second dry process production, that is: rice transportation - rice polishing - specific gravity sand removal - jet washing rice - water and rice separation - wet rice crushing - adding starch for cooking and stirring - making dough and extruding tablets - powder flakes Conveying-high-pressure extrusion-vermicelli re-steaming-vermicelli cooling aging-artificial loosening-quantitative cutting-boxing and finishing-dehydration drying-noodles air cooling-packing into bags.

The production of rice noodles in the above two processes is in the form of secondary cooking, that is, the process of heating twice. Why do you need to heat it twice? The reason is that the fully cooked rice noodles that are extruded at one time are highly viscous and stick to each other, and the existing methods cannot realize their better separation. Only for this reason, in the production process of rice noodles, it is not fully cooked during the first steaming, so that the extruded rice noodles are half-cooked, so the viscosity will be lower, and there will be no sticking between them that is difficult to separate . Then the extruded rice vermicelli is steamed again to make it fully cooked. Due to the adoption of twice cooking, it needs to be heated twice, which consumes a lot of energy. If it can be changed to one-time cooking, it will effectively reduce energy consumption, which is of great value in the current situation of energy saving and resource saving, but because the sticky problem of rice noodles cannot be solved, it has become a difficult problem that cannot be solved always.

In addition, because the existing rice flour production adopts manual or semi-manual and semi-automatic production, manual transfer, and natural drying, the sanitary conditions of the working environment are insufficient, and cannot meet the requirements of advanced countries for food hygiene. It is necessary to improve The production technology and equipment of rice noodles can fully realize automatic production and meet the strict requirements of food hygiene.

For above-mentioned reasons, the production of existing convenient instant rice vermicelli comprises secondary cooking and manual production, and this method can greatly reduce production efficiency, increase energy consumption, increase production cost and equipment cost, and hygienic conditions also need to be improved.

Contents of the invention

The object of the present invention is to provide a fully automatic convenient instant rice noodle production line and its production process, which solves the problems of secondary cooking, inability to automate production, and poor hygienic conditions in the production process of rice noodle, and improves production efficiency.

A convenient instant rice noodle production line, including a rice processing device, a steaming and beating machine, a self-cooking and extruding device, an aging aging device, a quantitative cutting device, a box-in-box shaping device, a powder block drying device, and a powder block Cooling device, packaging and conveying device. The aging aging device consists of a Mimi vermicelli freezer, an aging aging machine, and a continuous silk loosening machine.

The rice processing device includes a rice conveying device, a rice polishing device, a rice specific gravity desanding device, a jet rice washing device, a water rice separation device, a refining and screening device, a vacuum dehydration device, and a combination of a delay conveying device. The rice processing device can also be a combination of a rice conveying device, a rice polishing device, a rice specific gravity desanding device, a jet rice washing device, a water rice separation device, and a wet rice crushing device. Through the rice processing device, the rice can be processed into powder and granular for subsequent processing.

A self-cooking wire extruder includes a wire extruding cylinder, a screw drive mechanism, and a screw mechanism. A wire extruding cylinder is arranged outside each screw, and the screw is accommodated in the cavity of the extruding cylinder, and both ends of the extruding cylinder are sealed, and the shaft of the screw is installed on the seals at both ends of the extruding cylinder. A feeding port is provided on each extruding tube, and the opening of the feeding port faces upward and is close to the end of the screw rod. A discharge port is provided on each extrusion cylinder. There is also an independent heating box outside each extrusion tube, the extrusion tube passes through the heating box, and a closed space is formed between the heating box and the extrusion tube; the heating box is provided with an air inlet and an outlet connected to the closed space The air port, the air inlet, and the air outlet are in communication with the hot steam source. The screw is a variable pitch screw, and the screw torque near the feed port gradually decreases from the screw torque near the discharge port. An extruding head is installed downwards at the end of the extruding barrels of the two screws near the discharge port. In the extruding head, there is an independent discharge channel communicating with the cavity in each extruding barrel. The thread head is also installed with a thread plate and a thread extrusion template in sequence through screws. The shape of the discharge channel on the thread plate is rectangular, and the small holes on the thread extrusion template are arranged in a rectangular shape and divided into eight Arrangement of small rectangles. The screw driving mechanism includes a motor, a fourth pulley installed on the shaft of the motor, a reduction box, a fifth pulley installed on the first stage transmission gear of the reduction box, and a pulley installed on the fourth pulley and the fifth pulley. Synchronous belt; the shaft of the screw rod is installed on the last stage transmission shaft of the reduction box.

The rice noodle freezer includes a freezer with a refrigerating device, two circular chains parallel to each other in the freezer, a driving device for driving the circular motion of the circular conveyor chain, and a hanging rod for hanging vermicelli on each circular chain. The circular conveyor chains are set at equal intervals in a ladder shape;

The continuous wire loosening machine includes a frame, a rice noodle conveyor belt, a roller group, a conveyor belt runner, and a roller transmission mechanism. The rice noodle conveyor belt is installed on the conveyor belt runner. Conveyor belt clapboard, the roller set is a plurality of matching rollers set on the upper and lower roller shafts, each conveyor belt passes between each pair of corresponding upper and lower rollers, and each upper and lower corresponding rollers are located between two adjacent rollers. Space for clapboards. The conveyor belt runner drives the rice noodle conveyor belt to move, and the roll transmission mechanism drives the roll group to move. The rice noodles move on the rice noodle conveyor belt with the rice noodle conveyor belt. When the rice noodles pass through the roller group, due to the limitation of the gap between the upper and lower roller groups, the rice noodles that stick to each other and form a ball are pressed by the rollers, because the rice vermicelli itself has elasticity. , The rice vermicelli will not be broken by pressure, and the adhesive rice vermicelli will destroy the mutual adhesion due to the pressure, and the adhesion part will loosen and become loose. In order to improve the roll effect, the continuous loosening machine is equipped with multiple outer roll groups. After multiple roll loosening, the rice vermicelli is completely loosened and sticky to achieve the loosening effect.

As an improvement of the above scheme, a high-pressure dehydration device is also provided between the box-entry shaping device and the dryer. The high-pressure dehydration device includes two rows of air cylinders, and the number of each air cylinder is the same as that of the dryer installed on the conveyor belt of the pre-drying dehumidifier. The number of powder boxes in each row of the dry box corresponds one by one, and the air outlet of the air duct is facing the corresponding powder box in the vertical direction; each air duct on each row includes two air outlets, and each air outlet corresponds to its powder. The opposite sides of the box; the center line of the two air outlets of each air duct on one row of air ducts is perpendicular to the center line of the two air outlets of each air duct on the other air duct.

As a further improvement, a pre-drying dehumidification device is provided between the high-pressure dehydration device and the dryer. The pre-drying dehumidification device includes a body, an air supply port, a curved powder box conveyor belt, and an air suction port. The powder box containing rice vermicelli is bent and moved with the powder box conveyor belt. The high-temperature dry gas enters from the air supply port, passes through the conveyor belt, and exits from the air exhaust port. The original high-temperature dry gas turns into a low-temperature moist gas, taking away a large number of powder boxes With a large amount of water vapor in it, the powder box and rice noodles have been initially dried. A pre-drying dehumidification device is adopted, which can discharge a large amount of water vapor before entering the drying device, effectively reducing the content of water vapor in the dryer, making drying more convenient and complete.

A production process of instant rice noodles, which sequentially includes rice processing, cooking and stirring, self-cooked extrusion, vermicelli delivery, self-cooked extrusion, aging, quantitative cutting, box shaping, noodle drying, noodle cooling, packaging and delivery ; Aging aging includes rice vermicelli freezing, aging aging, and continuous loose silk. In this production process, the previous secondary cooking process is changed, and only the primary cooking method is adopted. At the same time, the rice vermicelli extruded by the method of self-cooking and extruding silk is completely cooked and does not need to be cooked again. Simultaneously, in order to make the rice vermicelli stick together, in the production process of the present invention, promptly adopt the technique of rice vermicelli freezing after extrusion, effectively reducing the sticking between the rice vermicelli. In the process, a continuous loosening process is designed to loosen the small amount of adhesion that occurs after aging. The whole process achieves the effect of secondary cooking and anti-sticking. At the same time, the whole process can realize fully automated mechanical production, reduce handling and other work, avoid excessive manual participation, and achieve the beneficial effect of food hygiene.

As an improvement, a high-pressure dehydration process is also included between the box-in shaping and the powder drying process, which is completed by setting up a high-pressure dehydration device. The high-pressure dehydration device includes two rows of air ducts, and the number of each air duct is the same as that installed in the pre-drying machine. The number of powder boxes or noodle boxes in each row of drying boxes on the conveyor belt of the dehumidifier corresponds one by one. Side; the center line of the two air outlets of each air duct on one row of air ducts is perpendicular to the center line of the two air outlets of each air duct on the other air duct; the high-pressure dehydration method is powder on the conveyor belt When the powder box or noodle box is conveyed directly under a row of air ducts, the air duct blows air directly above the powder box or noodle box, completely blowing the water film between the small holes on the corresponding sides of the powder box or noodle box; and then When the same row of powder boxes or noodle boxes on the conveyor belt is conveyed directly below another exhaust duct, the other exhaust duct will blow air directly above the powder box or noodle box, and the powder box or noodle box will correspond to the small ones on both sides. The water film between the holes is completely broken; thereby completely blowing the water film between the small holes of the powder box or noodle box and the water film on the powder block or noodle block, so that the water on the surface of the powder block or noodle block is blown from the powder box Or flow out from the small holes in the noodle box.

As a further improvement, a pre-drying dehumidification process is added to the high-pressure dehydration process and block drying process. The pre-drying dehumidification process is completed by a pre-drying dehumidification device. The powder box containing rice vermicelli moves along with the powder box conveyor belt. The dry gas enters from the air supply port, passes through the conveyor belt, and exits from the air suction port. The high-temperature dry gas turns into a low-temperature moist gas, which takes away a large amount of water vapor in a large amount of powder boxes, and the powder boxes and rice noodles are initially dried. . A pre-drying dehumidification device is adopted, which can discharge a large amount of water vapor before entering the drying device, effectively reducing the content of water vapor in the dryer, making drying more convenient and complete.

Full-automatic instant rice noodle production line of the present invention and production technology thereof have following advantages:

a) High product quality: The instant rice noodles produced by this production line can be eaten after being brewed in boiling water.

b) Wide adaptability: This production line is also suitable for making instant rice vermicelli, and there is no requirement for the ratio of various raw materials for rice vermicelli.

c) Efficient and automatic.

d) Low consumption and energy saving, self-cooking and extruding silk does not require secondary cooking; quick freezing time is short; easy to automatically loosen silk continuously; automatic quantitative box drying.

e) High yield rate: due to the automatic and continuous delivery of each link of the production line, coupled with automatic quantitative cutting and automatic distribution into boxes for drying, it avoids the serious "scattering, chaos, breaking, breaking, Falling" leads to wastage.

6. Sanitation and environmental protection: the collection and treatment of dust, the collection and discharge of sewage and residual steam, the automatic transfer mechanism through the process of pipes, tanks, buckets, belts, boxes, etc., and the automatic operating system, truly realize the process from raw materials (rice) to The continuous automatic control of the entire production process of the product (instant rice noodles) avoids food contamination caused by manual intervention.

Description of drawings:

Fig. 1 is the mechanism schematic diagram of production line of the present invention;

Figure 2 is a schematic diagram of the structure of the self-cooking wire extrusion machine cut along the center of the screw

Fig. 3 is a schematic diagram of the installation of the extruder head, extrusion template and pressing plate of the self-cooking extruder.

Fig. 4 is a schematic diagram of the structure of the extruding screw of the self-cooking extruding machine.

Fig. 5 is a schematic top view of the self-cooking extruder.

Fig. 6 is a schematic structural view of a rice noodle freezer.

Fig. 7 is a structural schematic diagram of a washing and loosening device.

Fig. 8 is a structural schematic diagram of a pair of upper press rollers and lower support rollers facing each other on the upper and lower knots of the inventive water-washing and loosening silk device, cut from the axis position.

Fig. 9 is a schematic structural view of the pre-drying dehumidifier of the present invention.

FIG. 10 is a schematic cross-sectional view along line A-A of FIG. 9 .

Fig. 11 is a schematic top view of the pre-drying dehumidifier.

Fig. 12 is a structural schematic diagram of the integral dehydration device of the pre-drying dehumidifier.

Fig. 13 is a structural diagram of the right part of the integral dehydration device of the pre-drying dehumidifier.

Fig. 14 is a process flow diagram of the present invention.

Detailed ways

As shown in Fig. 1, a kind of convenient instant rice noodle production line, comprises the rice processing device that the rice is processed into slurry that is arranged in sequence according to the conveying direction of material, in the steaming and beating machine 1 that mixes and heats rice slurry and starch, makes vermicelli The vermicelli conveying device that is delivered to the feed port of the self-cooking wire extruding machine, the vermicelli is processed into the self-cooking extruding device 2 of rice vermicelli, the aging aging device (not shown) that rice vermicelli is processed, and the rice vermicelli is quantified Quantitative cutting device for cutting 3, box-in-box shaping device for putting the cut rice vermicelli into the powder box, powder block drying device for drying the powder block in the powder box 4, powder block cooling for cooling the powder block Device 5, the packaging and conveying device 6 that sends the powder block to the packaging. The aging aging device includes a rice vermicelli freezer 7 for freezing and anti-sticking the freshly extruded rice vermicelli, an aging aging machine for freezing and thawing aging, and a continuous silk loosening machine 8 for performing a silk loosening process on the aged rice vermicelli.

Rice processing device also can be the combination of rice conveying device 9, rice polishing device 10, rice specific gravity desandering device 11, jet flow rice washing device 12, water rice separating device 13, wet rice pulverizing device 14. Through the rice processing device, the rice can be processed into powder and granular for subsequent processing. Similarly, the rice processing device can also be a combination including a rice conveying device, a rice polishing device, a rice specific gravity desanding device, a jet rice washing device, a water rice separation device, a refining and screening device, a vacuum dehydration device, and a time-delayed conveying device.

As shown in Figures 2 to 5, the self-cooking silk extruder is a twin-screw self-cooking silk extruder, including a screw drive mechanism and two screw mechanisms.

Each screw rod 25 is provided with a wire extruding cylinder 24, the screw rod 25 is accommodated in the cavity 30 of the extruding cylinder 24, the two ends of the extruding cylinder 24 are sealed, and the shaft of the screw rod 25 is installed on the seal at both ends of the extruding cylinder 24. on file. Each extruding cylinder 24 is provided with a feed port 23 , the feed port 23 opens upward and is close to the end of the screw rod 25 . A discharge opening 29 is provided on each extrusion cylinder 24 .

An independent heat insulation box 31 is also provided outside each extrusion cylinder 24, the extrusion cylinder 24 passes through the heat insulation box 31, and a closed space is formed between the heat insulation box 31 and the extrusion cylinder 24;

The screw rod 25 is a variable pitch screw rod 25, and the screw torque near the feed port 23 gradually decreases from the screw torque near the discharge port.

An extruding head 24 is installed downwards near one end of the extruding cylinder 24 of the two screws 25 near the discharge port 29, and an independent valve communicating with the cavity 30 in each extruding cylinder 24 is provided in the extruding head 24. The discharge channel 34 of the wire extrusion head 24 is also installed with a template platen 28 and a wire extrusion template 25 successively by screws. The shape of the discharge channel 35 on the template platen 28 is rectangular, and the aperture on the wire extrusion template 25 is in line with the The small holes are arranged in a rectangle and divided into eight small rectangles.

Screw drive mechanism comprises motor 21, the 4th belt pulley 36 that is installed on the axle of motor 21, reduction box 22, the 5th belt pulley 37 that is installed on the reduction box 22 first stage transmission gears, is installed in the 4th belt pulley 36 , the synchronous belt on the fifth belt pulley 37;

The angle of the helical blade of the screw helix is 57°, 60°, 63°, 66°, 68°, 71°, and 73°; the helix length is 3450mm; the pitch is 122, 109, 95, 80, 75, 67, 63 decrease.

As shown in Figure 6, the rice noodle freezer comprises a freezing chamber 503 with a refrigerating device, a refrigeration system 502 installed in the freezing chamber, two chains 507 and driving sprockets that are delivered side by side by a sprocket 504 are provided in the freezing chamber 503 The moving speed reducer 506 is provided with a hanging rod 508 for hanging vermicelli 505 on each chain 504, and the two transmission chains 507 are arranged at equal intervals in a ladder shape.

As shown in Fig. 7 and Fig. 8, the washing loosening device is an automatic continuous loosening machine, including a driving roller 404 and a driven roller 402 of a frame 405, a conveying belt 407, a conveying belt 407, and the conveying belt 407 is enclosed within the driving roller 404 And on the driven roller 402, the driving roller 404 and the driven roller 402 are installed on the frame 405, the washing device 403, the powder unloading roller 401, two pairs of upper and lower pressure rollers 406 facing up and down on the frame 405 And the following support roller 409, motor 416, the transmission mechanism that makes the opposite upper pressure roller 406 and the following support roller 409 reverse motion. The powder unloading roller 401 is placed above the conveying belt 407 , and the water outlet of the water washing device 403 is installed on the upper pressing roller 406 . The conveying belt 407 passes between the upper pressing roller 406 and the lower support roller 409, the lower supporting roller 409 supports the conveying belt 407, and the upper pressing roller 406 contacts the rice vermicelli 408 on the conveying belt 407.

Be provided with the guide groove 410 that rice vermicelli 408 is evenly divided into two parts or more than two parts on conveying belt 407, form guide bar 411 between guide groove 410 and guide groove 410; The groove 412 that the guide bar 411 on the conveyer belt 407 cooperates and the protrusion 413 that the guide groove 410 on the conveyer belt 407 cooperates, the bottom surface of the guide groove 410 of the conveyer belt 407 and the top of the protrusion 413 of the upper pressure roller 406 There is a gap between the surfaces, and the rice vermicelli passes through the gap between the guide groove 410 of the conveyor belt 407 and the protrusion 413 of the upper pressing roller 406, and the top surface of the protrusion 413 of the upper pressing roller 406 contacts the pressed rice vermicelli 408 . Radial recesses 414 are provided around the two ends of the lower supporting roller 409 , and convex strips 415 matching the grooves 412 are provided on the conveyor belt 407 .

The transmission mechanism that makes the opposite upper pressing roller 406 and the lower supporting roller 409 reversely move includes a transmission chain installed between the driving roller 404 and the lower supporting roller 409, the first transmission gear 17 installed on the lower supporting roller 409 and the installation The second transmission gear 18 on the upper pressure roller 406, the driving roller 404 and the driven roller 402 are installed on the frame 405 on both sides, the conveying belt 407 is enclosed within on the driving roller 404 and the driven roller 402, the first transmission gear 17 meshes with the second transmission gear 18, so that the structure is simple and the transmission is reliable.

The rice vermicelli 408 after the aging treatment is unloaded by the powder unloading roller 401 and is divided into eight rows and enters the conveyor belt 407 of the automatic continuous silk loosening machine. Strip 411 is the position of positioning conveying belt 407 and upper pressure roller 406. The automatic continuous loosening machine is driven by a separate motor 416 to drive the driving roller 404. The driving roller 404 drives two sets of lower pressure rollers through the transmission chain. The lower pressure rollers are installed on the lower support. The first gear on the roller 409 and the second transmission gear 18 meshing movement that is installed on the upper pressure roller 406 drive the upper pressure roller 406, and the rice vermicelli 408 is sent to the conveyer belt 407 by the water washing device 403 during the conveying process of the conveying belt 407. The rice vermicelli 408 is sprayed with water, and is rotated and extruded by two groups of upper pressing rollers 406 and lower support rollers 409 in opposite directions to complete the loosening action and enter the next process.

The rice noodles move on the rice noodle conveyor belt with the rice noodle conveyor belt. When the rice noodles pass through the roller group, due to the limitation of the gap between the upper and lower roller groups, the rice noodles that stick to each other and form a ball are pressed by the rollers, because the rice vermicelli itself has elasticity. , The rice vermicelli will not be broken by pressure, and the adhesive rice vermicelli will destroy the mutual adhesion due to the pressure, and the adhesion part will loosen and become loose. In order to improve the roll effect, the continuous loosening machine is equipped with multiple outer roll groups. After multiple roll loosening, the rice vermicelli is completely loosened and sticky to achieve the loosening effect.

As shown in Figures 9 to 13, the pre-drying dehumidifier includes a high-pressure dehydration device 313, an incubator 318, a fan 317 installed on the incubator 318, a radiator (not shown) is arranged on the fan 317, and the fan 317 The air inlet is connected with the insulation box 318.

The high-pressure dehydration device 313 includes two rows of air cylinders 304, each row of air cylinders 304 corresponds to a cylinder 303, the air cylinder 304 is installed on its corresponding cylinder 303, and the cylinder 303 is installed on the cylinder 303 supporting seats on both sides of the drying box 310. The cylinder 303 is connected to the vortex pump 308 through the cylinder connection pipe 307, and the vortex pump 308 is fixed on the vortex pump base 309; a water receiving plate 311 is also installed under the drying box 310.

The number of each row of air ducts 304 corresponds to the number of each row of powder boxes 321 of the drying boxes 310 installed on the chain conveyor belt 320 of the pre-drying dehumidifier. Each air duct 304 on every row comprises two blowing outlets 305, and the center connection line of the two blowing outlets 305 is perpendicular to the moving direction of the conveyer belt 320, and the two blowing outlets corresponding to the same powder box 321 on the two rows are mutually staggered. The air outlet 305 of the air cylinder 304 is facing the corresponding powder box 321 in the vertical direction.

A third sprocket 324 and a fourth sprocket 325 are installed near the bottom of the pre-drying dehumidifier, the third sprocket 324 is installed on the side near the incubator 318, and the fourth sprocket 325 is installed near the high pressure dehydration device 313, a fifth sprocket 326 is provided directly above the fourth sprocket 325, and a sixth sprocket 327 at the same vertical height as the fifth sprocket 326 is also provided on the side close to the incubator 318. A seventh sprocket 328 is also provided near the entrance of the incubator 318 below the sixth sprocket 327. The seventh sprocket 328 is placed between the sixth sprocket 327 and the third sprocket 324 in the vertical direction. The side far away from the entrance of the incubator 318 in the case 318 is also provided with a first sprocket 322 at the same height as the seventh sprocket 328, and a second sprocket is also provided on the side near the entrance of the incubator 318 in the incubator 318 323, the diameters of the first sprocket 322, the second sprocket 323, the third sprocket 324, the fourth sprocket 325, the fifth sprocket 326, the sixth sprocket 327, and the seventh sprocket 328 are equal, and the second sprocket The distance between wheel 323 and the first sprocket 322 in the vertical direction is equal to the diameter of the sprocket, and the distance between the second sprocket 323 and the first sprocket 322 in the vertical direction is equal to the diameter of the sprocket; The bottom of the sprocket 324, the fourth sprocket 325 meshes, and walks around the fourth sprocket 325, meshes with the top of the fifth sprocket 326, the sixth sprocket 327, and passes through the sixth sprocket 327 and the seventh sprocket The bottom of the seventh sprocket 328 and the first sprocket 322 are meshed between the wheels 328, and then go around the first sprocket 322 to mesh with the top of the first sprocket 322 and the bottom of the second sprocket 323, and finally go around The second sprocket wheel 323 engages with the top of the second sprocket wheel 323 and passes through the heat preservation door, so that there are three layers of chain conveyor belts 320 in the heat preservation box 318 .

The working method of the rice flour pre-drying dehumidifier of the present invention comprises that the chain enters from the entrance on one side of the incubator 318, passes through the third sprocket 324 and the fourth sprocket 325 from the water receiving plate 311 below the incubator 318 and the drying box 310 Pass through below, then pass through the fourth sprocket 325 and the fifth sprocket 326 to the upper part of the water receiving box and under the action of the fifth sprocket 326, return to the direction of the incubator 318 between the air duct 304 and the water receiving box Transmission, firstly, when the powder box 321 on the chain conveyor belt 320 is conveyed directly below a row of air cylinders 304, the vortex pump 308 supplies air to the air cylinder 303, and the air cylinder 303 supplies air to the air cylinder 304, and the air from the air cylinder 304 passes through the air outlet 305 Blow air directly above the powder box 321 to break the water film between the powder box 321 and the powder block; , another blower 304 blows air directly above the positions staggered from the previous one on the powder box 321, and blows the water film on the remaining positions on the powder box and the powder block. Thereby the water film between the small holes of the powder box 321 and the water film on the powder block or the noodle block are blown completely, so that the water on the powder block or the surface of the noodle block flows out from between the small holes of the powder box 321; After the exhaust duct 304, under the action of the sixth and seventh sprockets 328, it descends to the height of the entrance of the incubator 318, and under the action of the seventh and first sprockets 322, it enters from the entrance of the incubator 318 to a place far away from the incubator 318. One side of the entrance and return under the effect of the first sprocket 322, the sprocket chain conveyor belt 320 after the return is sent to the near side under the effect of the first sprocket 322 and the second sprocket 323 along the top of the first sprocket 322 One side of the incubator 318 entrance, and return under the effect of the second sprocket 323, pass out from the incubator 318 under the effect of the sprocket outside the second sprocket 323 and the pre-drying dehumidifier. Fan 317 blows air into the incubator 318, and the radiator turns the steam from the external steam source into hot air to heat in the incubator through the blowing of the fan 317, so that the powder or noodles in the incubator 318 are further dehydrated.

The powder box containing rice vermicelli is bent and moved with the powder box conveyor belt. The high-temperature dry gas enters from the air supply port, passes through the conveyor belt, and exits from the air exhaust port. The original high-temperature dry gas turns into a low-temperature moist gas, taking away a large number of powder boxes With a large amount of water vapor in it, the powder box and rice noodles have been initially dried. A pre-drying dehumidification device is adopted, which can discharge a large amount of water vapor before entering the drying device, effectively reducing the content of water vapor in the dryer, making drying more convenient and complete.

The production process of the instant rice noodles of the present invention comprises the steps of rice treatment, cooking and stirring, self-cooking extrusion, vermicelli delivery, self-cooking extrusion, rice vermicelli freezing, aging and continuous loosening. , Quantitative cutting, box shaping, high pressure dehydration, pre-drying and dehumidification, powder drying, powder cooling, packaging and transportation, packaging.

Below in conjunction with production technology, invention technology is described in further detail:

Rice processing process: through the rice processing device, the rice can be processed into powder and granular for subsequent processing. There are two methods of rice processing, wet processing and dry processing, but from the perspective of saving energy, it is better to use dry processing, that is, rice processing uses rice transportation, rice polishing, rice specific gravity desanding, and jet flow. The process of washing rice, separating water and rice, and crushing wet rice.

Cooking, stirring and beating rice: Stir and mix the rice flour and starch according to the formula, cook and cook to meet the requirements of noodle processing, send the noodle into the extruding device, extrude the noodle into vermicelli by screw, and put the self-cooked noodle extruder The extruded vermicelli is sent to the self-cooking wire extruder.

Self-cooking extrusion process: Vermicelli enters the feed port of the self-cooking extruder respectively, and the vermicelli is fully cooked and extruded through the heating of the self-cooking extruder and the friction between the vermicelli and the screw. The twin-screw extruder is used instead of the traditional single-screw extruder, so that the silk is evenly distributed and clearly arranged, which is conducive to continuous loosening and automatic quantification; the heating temperature is always kept slightly lower than 100°C, and the rice noodles can be completely cooked. Ripening can also keep the temperature constant within the required temperature range, so that the extruded rice vermicelli is of good quality; during extrusion molding, the steam heating and the frictional heat between the slurry and the screw make the slurry fully matured, fully meeting the needs of instant rice noodles. Ripening requires no secondary re-steaming, which greatly simplifies the process and saves energy, while saving equipment costs.

Rice vermicelli freezing process: The vermicelli after vermicelli aging is put into the rice vermicelli freezer for hanging and freezing. The freezing time is generally 2 hours, and the freezing temperature is generally 15°C.

Continuous loosening process: The aged vermicelli is automatically sent into the continuous loosening machine, and through automatic continuous loosening, the vermicelli is loose and clearly divided.

Quantitative cutting process: select the length of each vermicelli according to the required weight of the loose rice noodles, and quantitatively cut off the continuous loose vermicelli strips by the quantitative cutting machine, and the swing mechanism is controlled by the electronic automatic synchronous tracking system. Accurately distributes each serving of fans to the dry powder box.

High-pressure dehydration process: two rows of air ducts arranged in different positions on the conveyor belt of the shaping dehumidifier correspond to the four side walls of each powder block in the drying box to blow air, destroying the water film on the wall of the drying box, Prevent the water film from blocking the holes of the drying box and make water leak out of the holes of the drying box. Before drying, the vermicelli in the drying box is forced to dehydrate in time through the air duct, which not only makes the vermicelli loose and easy to dry, but also makes the dried powder easy to brew and eat, and shortens the drying time, which is highly efficient and energy-saving.

Pre-drying and dehumidification process: Pre-drying and dehumidifying the dehydrated powder blocks through radiators and circulating fans, so that the wet vermicelli is at a temperature of 50°C to 90°C and the relative humidity is lower than 70%.

Powder drying: Put the pre-dried and dehumidified powder into the drying room for drying for 150-180 minutes, and then send it to the powder cooler through the tail of the dryer.

Powder air-cooling process: the powder coming out of the dryer still has a relatively high temperature, and is cooled by the air cooler for more than 2 minutes, so that the temperature of the cooled powder is close to room temperature (or 5-10°C higher than room temperature ) for safe packaging and storage.

Packaging and conveying process: The powder block is sent to two packaging conveyors from the two outlets of the diverting conveyor.

Packaging process: sent by the packaging conveyor to the packaging machine for product packaging.

Claims (7)

1. A production line for instant rice noodles, including a rice processing device, a cooking and stirring device, a self-cooking extruding device, a vermicelli conveying device, a self-cooking extruding device, an aging device, a quantitative cutting device, and a boxing device arranged in sequence according to the material conveying direction. Shaping device, powder block drying device, powder block cooling device, packaging and conveying device. The aging aging device consists of a Mimi vermicelli freezer, an aging aging machine, and a continuous silk loosening machine. 2. A kind of instant rice noodle production line as claimed in claim 1, is characterized in that: The self-cooking wire extrusion device includes a wire extrusion cylinder, a screw driving mechanism, and a screw mechanism; a extrusion cylinder is arranged outside each screw rod, and the screw rod is accommodated in the cavity of the extrusion cylinder, and the two ends of the extrusion cylinder are sealed, and the ends of the screw rod are sealed. The shaft is installed on the seals at both ends of the extruding barrel; there is a feed port on each extruding barrel, and the opening of the feeding port is upward and close to the end of the screw; there is a discharge port on each extruding barrel ; There is also an independent heating box outside each extrusion tube, the extrusion tube passes through the heating box, and a closed space is formed between the heating box and the extrusion tube; the heating box is provided with an air inlet connected to the closed space and The air outlet, air inlet, and air outlet are connected to the hot steam source; the screw is a variable pitch screw, and the screw torque near the feed port gradually decreases from the screw torque near the discharge port; One end of the feed port is downwardly installed with a extrusion head, and an independent discharge channel connected with the cavity in each extrusion cylinder is arranged in the extrusion head, and the extrusion head is also installed with screws in turn. The shape of the discharge channel on the wire plate and the wire extrusion template is a rectangle, and the small holes on the wire extrusion template are arranged in a rectangle, and are divided into eight small rectangles; the screw drive mechanism includes a motor , the fourth pulley installed on the shaft of the motor, the reduction box, the fifth pulley installed on the first stage transmission gear of the reduction box, the timing belt installed on the fourth pulley and the fifth pulley; the screw The shaft is installed on the last stage drive shaft of the gearbox; The vermicelli freezer includes a freezing chamber with a refrigeration device. Two circulating chains are arranged side by side in the freezing chamber to drive the driving device for the circular motion of the circulating conveyor chain. A hanging rod for hanging vermicelli is provided on each circulating chain. The circular conveyor chains are set at equal intervals in a ladder shape; The continuous wire loosening machine includes a frame, a rice noodle conveyor belt, a roller group, a conveyor belt runner, and a roller transmission mechanism. The rice noodle conveyor belt is installed on the conveyor belt runner. Conveyor belt clapboard, the roller set is a plurality of matching rollers set on the upper and lower roller shafts, each conveyor belt passes between each pair of corresponding upper and lower rollers, and each upper and lower corresponding rollers are located between two adjacent rollers. Space for clapboards. The conveyor belt runner drives the rice noodle conveyor belt to move, and the roll transmission mechanism drives the roll group to move. 3. A kind of instant rice noodle production line as claimed in claim 2, it is characterized in that a high-pressure dehydration device is also provided between the box-entry shaping device and the dryer, the high-pressure dehydration device comprises two rows of blowers, each row of blowers The number corresponds to the number of powder boxes in each row of the drying box installed on the conveyor belt of the pre-drying dehumidifier. Two blowing outlets, each corresponding to the opposite sides of the powder box; the central connection line of the two blowing outlets of each blowing tube on one row of blowing tubes and the two sides of each blowing tube on the other row of blowing tubes The center line of the two air outlets is vertical. 4. A kind of instant rice noodle production line as claimed in claim 3, it is characterized in that a pre-drying and dehumidifying device is provided between the high-pressure dehydrating device and the drying machine, and the pre-drying and dehumidifying device comprises a body, an air supply port, and a curved back and forth Powder container conveyor belt, air outlet. 5. A production process for instant rice noodles, which is characterized in that it includes successively rice processing, cooking and stirring, self-cooking and extruding, vermicelli delivery, self-cooking and extruding, freezing rice vermicelli, aging, continuous loosening, quantitative cutting, and boxing Shaping, powder block drying, powder block cooling, packaging and conveying. 6. a kind of production technology of instant rice noodles as claimed in claim 5 is characterized in that also comprising high-pressure dehydration process between putting into box shaping and powder block drying process, completes by being provided with high-pressure dehydration device. 7. A kind of production technology of instant rice noodles as claimed in claim 6 is characterized in that a pre-drying dehumidification process is added in the high-pressure dehydration process and the block drying process, and the pre-drying dehumidification process is completed by a pre-drying dehumidification device.

Images