A continuous steam rice production line

Abstract

The application provides a continuous steam rice production line, and belongs to the technical field of kitchen equipment. A rice bin metering machine, a rice washing machine, a soaking and filling machine, a rice pre-cooking machine and a pressure rice machine are sequentially arranged along the cooking direction of the rice. The pressure rice machine comprises a tubular shell formed by splicing the first ends and the second ends of a plurality of columnar cylinders, and a rice cooking channel is arranged in the tubular shell. A pressure door body is arranged at each end of the tubular shell, and a pressure pipeline that is in communication with the rice cooking channel is arranged on the outer side wall of the tubular shell. The rice pre-cooking machine and the pressure rice machine are matched to realize secondary cooking of the rice. The rice is transported by a rice feeding telescopic machine between the rice pre-cooking machine and the pressure rice machine, and the semi-cooked rice is raked and loosened during the transportation, so that the taste of the cooked rice is improved, and the rice can be cooked in highland areas or areas with high altitudes.

Description

Technical Field

[0001] This invention belongs to the field of kitchen equipment technology, and relates to a rice production line, particularly a continuous steam rice production line. Background Technology

[0002] Fully automated rice cooking, from raw rice to cooked rice, involves the coordinated operation of multiple processes and machine types. Currently, fully automatic rice cookers mainly fall into two categories:

[0003] One type is the household model, but it falls far short of the requirements for "large-volume" meal supply and is simply insufficient to meet the needs of canteens, restaurants, and other similar settings. The other type involves improvements to certain models of large-scale rice production machines, but judging from the current development status, most of them lack a comprehensive and systematic consideration of the supporting technologies of the entire production line. Sometimes, a small problem, such as the control of a valve, can become a "bottleneck" of the entire production line, resulting in a high failure rate and making them impractical.

[0004] Chinese patent (CN102028144B) discloses a rice production line, which includes a rice storage bin (1), a rice washing machine 200 (2), a metering and filling machine (3), a first unpowered track (4), a rice cooking machine (6), a second unpowered roller track (7), and a turning and loosening machine (8) connected in sequence.

[0005] However, the rice production line described above can only be used in plains or low-altitude areas. For cooking rice at high altitudes or plateaus, a rice cooker alone cannot ensure that the rice is truly cooked. Summary of the Invention

[0006] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a rice production line that can be used in high-altitude or plateau environments and can achieve fully cooked rice.

[0007] The objective of this invention can be achieved through the following technical solution: a continuous steam rice production line for cooking raw rice into cooked rice. Along the steaming direction of the rice, a rice metering machine, a rice washing machine, a soaking and filling machine, a rice pre-cooking machine, and a pressure rice machine are arranged sequentially. The pressure rice machine includes a tubular shell formed by splicing multiple cylindrical sections end-to-end, and a rice steaming channel is provided inside the tubular shell. A pressure gate is provided at each end of the tubular shell, and a pressure pipeline connected to the rice steaming channel is provided on the outer wall of the tubular shell, with a pneumatic regulating valve installed on the pressure pipeline.

[0008] In the aforementioned continuous steam rice production line, a first cylinder and a second cylinder are provided at the end of the tubular shell. The first cylinder is connected to a fastening ring. The output end of the second cylinder is connected to a sleeve, and the output end of the second cylinder is perpendicular to the axial direction of the sleeve. A tubular cylinder that is inserted into the sleeve is installed inside the sleeve, and the output end of the tubular cylinder is connected to a pressure gate.

[0009] In the aforementioned continuous steam rice production line, three triangularly distributed support rollers are provided at the end of the tubular shell, wherein the support rollers are in rolling engagement with the fastening ring; an exhaust valve and a condensate drain valve are also provided on the outer wall of the tubular shell.

[0010] In the aforementioned continuous steam rice production line, multiple visualization windows are provided on the outer wall of the tubular shell, and flip-tops are connected to the visualization windows. Multiple locking assemblies are arranged in a ring along the axial direction of the flip-tops. Each locking assembly includes two opposing support plates, with pins inserted laterally into the support plates and a rotating shaft rotatably connected to the pins.

[0011] In the aforementioned continuous steam rice production line, a rice feeding telescopic conveyor is installed between the rice pre-cooking machine and the pressure rice machine. The rice feeding telescopic conveyor includes a frame on which nested fixed supports and movable supports are installed. A first drive shaft is installed at both ends of the fixed supports, and a second drive shaft is installed at both ends of the movable supports. The first drive shaft and the second drive shaft are connected by a conveyor belt. The fixed supports are connected to the rice pre-cooking machine, and the movable supports are connected to the pressure rice machine and extend into the pressure rice machine.

[0012] In the aforementioned continuous steam rice production line, a guide assembly is also provided between the movable support and the fixed support. The guide assembly includes a guide rod arranged along the length of the fixed support, with both ends of the guide rod connected to the fixed support via supports, and a guide block sliding on the guide rod, wherein the guide block is connected to the movable support.

[0013] In the aforementioned continuous steam rice production line, one of the multiple first drive shafts connected to the fixed support is the main drive shaft, and the remaining first drive shafts and second drive shafts are all driven shafts. The main drive shaft is connected to a power assembly, which includes a drive motor and a reducer connected to the drive motor. The first drive shaft is connected to the reducer.

[0014] In the aforementioned continuous steam rice production line, a tensioning drive shaft is provided between the main drive shaft and one of the first drive shafts on the fixed support at this end, wherein the tensioning drive shaft can move along the length direction of the fixed shaft.

[0015] In the aforementioned continuous steam rice production line, a rice scraping component is provided at one end of the movable support that extends into the pressure rice machine. The rice scraping component includes a scraper, and both ends of the scraper are connected to the movable support by fasteners.

[0016] In the aforementioned continuous steam rice production line, one side of the scraper is horizontally positioned and connected to a movable support via fasteners, while the other side of the scraper is inclined and in contact with the surface of the conveyor belt.

[0017] In the aforementioned continuous steam rice production line, a rice-loosening component is provided on one end of the fixed support near the rice pre-cooking machine. The rice-loosening component includes a gantry frame spanning both sides of the fixed support, and a rice-loosening motor is installed on the gantry frame. A rice-loosening roller is installed on the gantry frame, and one end of the rice-loosening roller is connected to the output end of the rice-loosening motor via a sprocket and chain.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] (1) The present invention provides a continuous steam rice production line, which realizes the secondary steaming of rice by combining a rice precooker and a rice press. The rice is conveyed between the rice precooker and the rice press by a rice feeding telescopic conveyor. During the conveying process, the semi-cooked rice is loosened, thereby improving the taste of the rice after steaming and realizing the steaming of rice in plateau areas or high-altitude areas.

[0020] (2) The tubular shell of the pressure rice cooker is spliced ​​together from end to end by multiple cylindrical sections, so that users can increase or decrease the overall size of the pressure rice cooker according to the size of the site, thus making the use of the pressure rice cooker more flexible and convenient.

[0021] (3) By setting a support roller at the end of the tubular shell, and the support roller and the fastening ring are in rolling contact, the fastening ring is less effort to rotate, and the fastening ring can be self-centered, ensuring that when the pressure gate closes the tubular shell, the axis of the tubular shell, the axis of the pressure gate and the axis of the fastening ring are aligned, thus improving the sealing performance of the pressure rice cooker.

[0022] (4) The rice feeding telescopic machine can automatically transport the semi-cooked rice in the rice precooker to the pressure rice machine, which solves the problem of transferring rice manually, improves work efficiency and reduces labor intensity. In addition, the movable support extends directly into the pressure rice machine, which prevents rice from falling into the gap between the movable support and the pressure rice machine, thus improving the reliability of rice transfer.

[0023] (5) By sliding between the guide rod and the guide block, the straightness of the movable support is ensured during the movement, and the deflection of the movable support during the movement is avoided, thereby improving the smoothness of the conveyor belt during transportation.

[0024] (6) The scraper assembly scrapes the rice stuck to the conveyor belt into the pressure rice machine, so as to avoid the rice sticking to the drive shaft during the rotation of the conveyor belt and affecting the normal use of the drive shaft, and to avoid wasting rice.

[0025] (7) By setting up the rice fluffing component, the semi-cooked rice output from the precooker can be fluffed to prevent the rice from forming clumps, which is conducive to the second cooking of the rice and improves the taste of the rice after the second cooking. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a continuous steam rice production line according to the present invention.

[0027] Figure 2 This is a schematic diagram of the structure of a pressure rice cooker in a preferred embodiment of the present invention.

[0028] Figure 3 yes Figure 2 Enlarged view of section A.

[0029] Figure 4 This is a schematic diagram of the structure of a rice feeding telescopic machine in a preferred embodiment of the present invention.

[0030] Figure 5 yes Figure 4 Enlarged view of section B.

[0031] Figure 6 This is a partial structural schematic diagram of the rice feeding telescopic machine in a preferred embodiment of the present invention.

[0032] In the diagram, 100 is the rice metering machine; 200 is the rice washing machine; 300 is the soaking and filling machine; 400 is the rice pre-cooking machine; 500 is the rice feeding telescopic conveyor; 510 is the frame; 511 is the fixed support; 512 is the movable support; 513 is the first drive shaft; 514 is the second drive shaft; 515 is the conveyor belt; 516 is the tensioning shaft; 520 is the linear cylinder; 521 is the cylinder body; 522 is the piston rod; 530 is the guide assembly; 531 is the guide rod; 532 is the support; 533 is the guide block; 540 is the power assembly; 541 is the drive motor; 542 is the reducer; 550 is the rice scraping assembly; 551 is the scraper; and 552 is the fastener. Components; 560, Rice feeding assembly; 561, Gantry frame; 562, Rice feeding motor; 563, Rice feeding roller; 564, Sprocket and chain; 565, Lever; 600, Pressure rice maker; 610, Tubular housing; 611, Exhaust valve; 612, Condensate drain valve; 620, Pressure gate; 630, Pressure pipeline; 631, Pneumatic regulating valve; 640, First cylinder; 641, Fastening ring; 650, Second cylinder; 651, Sleeve; 660, Tubular cylinder; 670, Support roller; 680, Flip cover; 690, Locking assembly; 691, Support plate; 692, Pin; 693, Rotating shaft; 700, Rice discharge telescopic conveyor. Detailed Implementation

[0033] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0034] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0035] like Figures 1 to 6As shown, this invention provides a continuous steam rice production line for cooking raw rice into cooked rice. Along the cooking direction, it is sequentially equipped with a rice metering machine 100, a rice washing machine 200, a soaking and filling machine 300, a rice pre-cooking machine 400, a rice feeding telescopic conveyor 500, a pressure rice machine 600, and a rice discharge telescopic conveyor 700. The rice metering machine 100 controls the volume of raw rice output per batch; the rice washing machine 200 washes the raw rice to remove impurities; the soaking and filling machine 300 soaks the washed raw rice to improve the texture of the cooked rice; the rice pre-cooking machine 400 partially cooks the raw rice; the rice feeding telescopic conveyor 500 feeds the partially cooked rice from the pre-cooking machine 400 into the rice pressure machine, where it is loosened during transport to further improve the texture; and the rice discharge telescopic conveyor 700 outputs the fully cooked rice from the pressure rice machine 600.

[0036] The rice metering machine 100, rice washing machine 200, and soaking and filling machine 300 in this embodiment have the same structure and function as the rice storage bin, rice washing machine 200, and metering and filling machine in the rice production line of the previously disclosed patent (CN102028144A). Therefore, the rice metering machine 100, rice washing machine 200, and soaking and filling machine 300 will not be described in detail here.

[0037] The present invention provides a continuous steam rice production line, which realizes secondary steaming of rice by cooperating with a rice precooker 400 and a rice press. The rice is conveyed between the rice precooker 400 and the rice press by a rice feeding telescopic conveyor 500. During the conveying process, the semi-cooked rice is loosened, thereby improving the taste of the rice after steaming and enabling the rice to be steamed in plateau areas or high-altitude areas.

[0038] Preferably, the pressure rice cooker 600 includes a tubular shell 610 formed by splicing multiple cylindrical sections end to end, and a rice cooking channel is provided inside the tubular shell 610. A pressure gate 620 is provided at each end of the tubular shell 610, and a pressure pipe 630 connected to the rice cooking channel is provided on the outer wall of the tubular shell 610, and a pneumatic regulating valve 631 is provided on the pressure pipe 630.

[0039] It is worth mentioning that the tubular shell 610 of the pressure rice cooker 600 is made of multiple cylindrical segments spliced ​​together end to end, which allows users to increase or decrease the overall size of the pressure rice cooker 600 according to the size of the site, thus making the pressure rice cooker 600 more flexible and convenient to use.

[0040] More preferably, the end of the tubular housing 610 is provided with a first cylinder 640 and a second cylinder 650. The second cylinder 650 drives the pressure gate body 620 to rotate and rise or fall in the vertical plane. The first cylinder 640 is connected to the fastening ring 641. The first cylinder 640 drives the fastening ring 641 to rotate, thereby locking the pressure gate body 620 and the tubular housing 610.

[0041] More preferably, the output end of the second cylinder 650 is connected to a sleeve 651, and the output end of the second cylinder 650 is perpendicular to the axial direction of the sleeve 651. A tubular cylinder 660 is installed inside the sleeve 651 and is inserted into the sleeve 651. The output end of the tubular cylinder 660 is connected to the pressure gate body 620.

[0042] More preferably, three triangularly distributed support rollers 670 are provided at the end of the tubular housing 610, wherein the support rollers 670 are in rolling engagement with the fastening ring 641.

[0043] In this embodiment, by providing a support roller 670 at the end of the tubular housing 610, and the support roller 670 and the fastening ring 641 are in rolling engagement, the fastening ring 641 is made easier to rotate, and the fastening ring 641 can be self-centered, ensuring that when the pressure gate 620 is closed, the axes of the tubular housing 610, the pressure gate 620, and the fastening ring 641 are aligned, thus improving the sealing performance of the pressure rice cooker.

[0044] In this embodiment, when the pressure gate 620 needs to be opened, the first cylinder 640 drives the fastening ring 641 to rotate, releasing the lock between the pressure gate 620 and the tubular housing 610. Then, the tubular cylinder 660 pushes the pressure gate 620 to move away from the tubular housing 610. Finally, the second cylinder 650 drives the sleeve 651 to rotate. Since the sleeve 651 and the output end of the tubular cylinder 660 are plugged into each other, the tubular cylinder 660 and the sleeve 651 rotate synchronously, causing the pressure gate 620 to rise in the vertical plane, thereby opening the pressure gate 620. Conversely, it locks and seals the pressure gate.

[0045] Preferably, an exhaust valve 611 and a condensate drain valve 612 are also provided on the outer wall of the tubular shell 610.

[0046] More preferably, the outer wall of the tubular shell 610 is provided with multiple viewing windows, and a flip cover 680 is flipped and connected to the viewing windows. Multiple locking components 690 are arranged in a ring along the axial direction of the flip cover 680 to ensure the sealing of the rice cooking channel inside the tubular shell 610.

[0047] In this embodiment, a viewing window is provided to facilitate maintenance and cleaning, and to clean the internal space of the pressure rice cooker 600.

[0048] More preferably, the latch assembly 690 includes two opposing support plates 691, with a pin 692 inserted laterally into the support plate 691, and a rotating shaft 693 rotatably connected to the pin 692. When the flip cover 680 is closed, rotating the rotating shaft 693 will engage the rotating shaft 693 into the flip cover 680 and lock it in place with fasteners, thus sealing the viewing window.

[0049] In this embodiment, the semi-cooked rice, after being cooked by the rice precooker 400, enters the rice cooking channel of the pressure rice cooker 600 through the rice feeding telescopic conveyor 500 and is spread flat on the rice cooking channel. Then, the pressure gate 620 is closed, and steam enters the rice cooking channel through the pneumatic regulating valve 631. The steam enters from the bottom of the tubular shell 610 and is discharged through the exhaust valve 611. When the temperature in the rice cooking channel reaches the preset temperature, the exhaust valve 631 is automatically closed. As the pressure in the tubular shell 610 gradually rises, steam pressure is maintained after reaching the preset pressure value. After 15 minutes, the rice is cooked and output through the rice discharge telescopic conveyor 700.

[0050] Preferably, the rice feeding telescopic conveyor 500 includes a frame 510, on which a fixed support 511 and a movable support 512 nested together are provided. A first drive shaft 513 is provided at both ends of the fixed support 511, and a second drive shaft 514 is provided at both ends of the movable support 512. The first drive shaft 513 and the second drive shaft 514 are connected by a conveyor belt 515. The fixed support 511 is connected to the rice pre-cooking machine 400, and the movable support 512 is connected to the pressure rice machine 600 and extends into the pressure rice machine 600.

[0051] In this embodiment, the rice feeding telescopic conveyor 500 can automatically transport the semi-cooked rice in the rice precooker 400 to the pressure rice machine 600, solving the problem of manually transferring rice, improving work efficiency, and reducing labor intensity. In addition, the movable support 512 extends directly into the pressure rice machine 600, preventing rice from falling into the gap between the movable support 512 and the pressure rice machine 600, thus improving the reliability of rice transfer.

[0052] Preferably, the movable bracket 512 is driven by the linear cylinder 520 to slide along the length direction of the fixed bracket 511.

[0053] More preferably, the linear cylinder 520 includes a cylinder body 521 mounted on a fixed bracket 511 and a piston rod 522 connected to a movable bracket 512, wherein the relative distance between the movable bracket 512 and the fixed bracket 511 is changed by the movement of the piston rod 522 within the cylinder body 521.

[0054] It is worth mentioning that the adjustment of the relative distance between the movable bracket 512 and the fixed bracket 511 is not limited to the linear cylinder 520. It can also be a hydraulic cylinder, a linear drive motor 541, or a lead screw and nut assembly, etc. Any mechanism that can adjust the relative position between the movable bracket 512 and the fixed bracket 511 is acceptable.

[0055] Preferably, a guide assembly 530 is further provided between the movable support 512 and the fixed support 511. The guide assembly 530 includes a guide rod 531 arranged along the length direction of the fixed support 511, and the two ends of the guide rod 531 are respectively connected to the fixed support 511 through the support 532, and a guide block 533 sliding on the guide rod 531, and the guide block 533 is connected to the movable support 512.

[0056] The sliding cooperation between guide rod 531 and guide block 533 ensures the straightness of movable support 512 during movement, prevents deflection of movable support 512 during movement, and improves the smoothness of conveyor belt 515 during transportation.

[0057] It is worth mentioning that the guide assembly 530 between the movable bracket 512 and the fixed bracket 511 can be used not only through the sliding cooperation between the guide rod 531 and the guide block 533, but also through the sliding cooperation between the slide rail and the slider. That is, a slide rail is provided on the fixed bracket 511, and a slider that slides with the slide rail is provided on the movable bracket 512.

[0058] In addition, the linear cylinder 520 and the guide rod 531 are arranged vertically and are parallel to each other.

[0059] Preferably, one of the multiple first drive shafts 513 connected to the fixed bracket 511 is the main drive shaft, and the remaining first drive shafts 513 and the second drive shaft 514 are all driven shafts, wherein the main drive shaft is connected to the power assembly 540.

[0060] More preferably, the power assembly 540 includes a drive motor 541 and a reducer 542 connected to the drive motor 541, wherein a first drive shaft 513 is connected to the reducer 542.

[0061] Preferably, a tensioning shaft 516 is provided between the main drive shaft and one of the first drive shafts 513 on the end fixed bracket 511, wherein the tensioning shaft 516 can move along the length direction of the fixed shaft to ensure the tension of the conveyor belt 515.

[0062] Preferably, a rice scraping component 550 is provided at one end of the movable support 512 that extends into the pressure rice cooker 600. The rice scraping component 550 includes a scraper 551, and both ends of the scraper 551 are connected to the movable support 512 by fasteners 552.

[0063] More preferably, one side of the scraper 551 is horizontally arranged and connected to the movable bracket 512 by fastener 552, and the other side of the scraper 551 is inclined and in contact with the surface of the conveyor belt 515.

[0064] In this embodiment, the scraper 551 assembly scrapes the rice stuck to the conveyor belt 515 into the pressure rice machine 600, preventing the rice from sticking to the drive shaft during the rotation of the conveyor belt 515 and affecting the normal use of the drive shaft, and also avoiding waste of rice.

[0065] Preferably, a rice-loosening assembly 560 is provided on one end of the fixed bracket 511 near the pre-cooking machine. The rice-loosening assembly 560 includes a gantry frame 561 spanning both sides of the fixed bracket 511, and a rice-loosening motor 562 is installed on the gantry frame 561. A rice-loosening roller 563 is installed on the gantry frame 561, and one end of the rice-loosening roller 563 is connected to the output end of the rice-loosening motor 562 through a sprocket and chain 564.

[0066] More preferably, the rice-making motor 562 and the rice-making roller 563 are arranged vertically, and the output end of the rice-making motor 562 is parallel to the axial direction of the rice-making roller 563.

[0067] More preferably, multiple levers 565 are provided on the rice-making roller 563 along the axis of the rice-making roller 563.

[0068] In this embodiment, by setting the rice fluffing component 560, the semi-cooked rice output from the pre-cooking machine can be fluffed to prevent the rice from forming clumps, which is conducive to the secondary cooking of the rice and improves the taste of the rice after secondary cooking.

[0069] Preferably, since the structure of the rice feeding telescopic conveyor 500 and the rice discharging telescopic conveyor 700 is the same, it will not be described in detail here.

[0070] It should be noted that in this invention, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0071] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0072] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A continuous steam rice production line for cooking raw rice into cooked rice, characterized in that, Along the direction of rice cooking, a rice metering machine, a rice washing machine, a soaking and filling machine, a rice pre-cooking machine, and a pressure rice cooker are arranged in sequence. The pressure rice cooker includes a tubular shell made of multiple cylindrical sections joined end to end, and a rice cooking channel is provided inside the tubular shell. A pressure gate is provided at each end of the tubular shell, and a pressure pipeline connected to the rice cooking channel is provided on the outer wall of the tubular shell. A pneumatic regulating valve is provided on the pressure pipeline. The tubular housing has a first cylinder and a second cylinder at its end. The first cylinder is connected to a fastening ring. The output end of the second cylinder is connected to a sleeve, and the output end of the second cylinder is perpendicular to the axis of the sleeve. A tubular cylinder that is inserted into the sleeve is installed inside the sleeve, and the output end of the tubular cylinder is connected to the pressure valve body. The first cylinder drives the fastening ring to rotate, the second cylinder drives the pressure valve body to rotate and rise or fall in a vertical plane, and the tubular cylinder pushes the pressure valve body to move away from or towards the tubular housing.

2. The continuous steam rice production line according to claim 1, characterized in that, Three triangularly distributed support rollers are provided at the end of the tubular shell, wherein the support rollers are in rolling engagement with the fastening ring; an air vent valve and a condensate drain valve are also provided on the outer wall of the tubular shell.

3. The continuous steam rice production line according to claim 1, characterized in that, The outer wall of the tubular shell is also provided with multiple viewing windows, and a flip cover is connected to the viewing windows. Multiple locking assemblies are arranged in a ring along the axis of the flip cover. Each locking assembly includes two opposing support plates, and a pin is inserted laterally into the support plates. A rotating shaft is rotatably connected to the pin.

4. A continuous steam rice production line according to any one of claims 1 to 3, characterized in that, A rice feeding telescopic mechanism is installed between the rice precooker and the pressure rice machine. The rice feeding telescopic mechanism includes a frame on which a fixed support and a movable support are nested together. A first drive shaft is installed at both ends of the fixed support, and a second drive shaft is installed at both ends of the movable support. The first drive shaft and the second drive shaft are connected by a conveyor belt. The fixed support is connected to the rice precooker, and the movable support is connected to the pressure rice machine and extends into the pressure rice machine.

5. A continuous steam rice production line according to claim 4, characterized in that, A guide assembly is also provided between the movable support and the fixed support. The guide assembly includes a guide rod arranged along the length of the fixed support, with both ends of the guide rod connected to the fixed support via supports, and a guide block sliding on the guide rod, and the guide block being connected to the movable support.

6. A continuous steam rice production line according to claim 4, characterized in that, One of the multiple first drive shafts connected to the fixed bracket is the main drive shaft, and the remaining first drive shafts and second drive shafts are all driven drive shafts. The main drive shaft is connected to the power assembly, which includes a drive motor and a reducer connected to the drive motor. The first drive shaft is connected to the reducer.

7. A continuous steam rice production line according to claim 4, characterized in that, A rice scraping component is provided at one end of the movable support that extends into the pressure rice cooker. The rice scraping component includes a scraper, and both ends of the scraper are connected to the movable support by fasteners.

8. A continuous steam rice production line according to claim 7, characterized in that, One side of the scraper is horizontally positioned and connected to the movable support by fasteners, while the other side of the scraper is inclined and in contact with the surface of the conveyor belt.

9. A continuous steam rice production line according to claim 4, characterized in that, A rice-loosening assembly is provided on one end of the fixed bracket near the rice precooking machine. The rice-loosening assembly includes a gantry frame spanning both sides of the fixed bracket, and a rice-loosening motor is installed on the gantry frame. A rice-loosening roller is installed on the gantry frame, and one end of the rice-loosening roller is connected to the output end of the rice-loosening motor by a sprocket and chain.

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