Fresh rice production line and rice soaking and washing device thereof

Abstract

The utility model relates to a fresh rice production line and a rice washing device thereof in the field of self-heating rice. The fresh rice production line comprises a rice washing mechanism, a water filtering mechanism and a soaking mechanism, the rice washing mechanism comprises a second storage cabin, a rice washing assembly and a third conveying pipe, the rice washing assembly comprises a first rice washing tank and a second rice washing tank, the first rice washing tank is a cylindrical structural body, a feeding port in the upper end of the first rice washing tank communicates with a discharging port in the lower end of the second storage cabin, purified water is contained in the second storage cabin, and a feeding port in the upper end of the second storage cabin is used for receiving fine-screened rice; the first rice washing tank is provided with an air inlet, the second rice washing tank comprises a first tank body of a cylindrical mechanism and a C-shaped conveying pipe communicated with the first tank body, a feeding port in the lower end of the C-shaped conveying pipe is communicated with a discharging port in the lower end of the first rice washing tank, and a discharging port in the upper end of the C-shaped conveying pipe is communicated with a feeding port in the upper end of the first tank body. A discharge hole in the lower end of the first tank body is communicated with a feed hole of the third conveying pipe. The rice cleaning device effectively improves rice cleanliness and reduces rice surface damage.

Description

Technical Field

[0001] This utility model relates to the field of self-heating rice, specifically to a fresh rice production line and its rice soaking and rinsing device. Background Technology

[0002] With social progress and an increasingly fast pace of life, people have higher and higher demands for industrialized food products such as pre-cooked meals and self-heating rice. In recent years, the development of pre-cooked meals has been rapid, and intelligent and automated factories have emerged. However, the industrial production of self-heating rice faces certain challenges due to the numerous steps involved, such as removing impurities from the rice, selecting high-quality rice, soaking it, and cooking it.

[0003] In existing self-heating rice processing methods, some methods utilize a reprocessing technique where rice grains are crushed, mixed with starch (such as corn or potato starch), and then extruded into rice grains. This process shortens heating time and avoids the problem of raw rice not gelatinizing quickly, but it fails to meet the demand of consumers for the authentic flavor. Other methods use a mixed rice and water cooking process, but due to its relatively simple design, this method has several drawbacks.

[0004] For example, CN108850846A discloses a self-heating rice production line including a rice washing device, a rice soaking device, a filling device, a microwave cooking device, a sealing device, and a secondary cooking and sterilization device. The rice washing device delivers washed rice to the rice soaking device, which then delivers the soaked rice to the filling device. The filling device quantitatively delivers the soaked rice and nutrient solution to the cooking box. The microwave cooking device heats and cooks the rice and nutrient solution in the cooking box, actively releasing steam after the rice is evenly cooked to accelerate the dissipation of the nutrient solution. The sealing device seals the cooking box containing the cooked rice to obtain a semi-finished cooking box. The secondary cooking and sterilization device performs high-temperature sterilization and secondary cooking. In this production line, the rice washing process is placed after the rice soaking device, and the rice washing device uses a traditional stirring method. This not only easily damages the rice grains during stirring but also, due to the large volume in industrial production, makes it difficult for the rice to achieve the required cleanliness, thus affecting the taste of the cooked rice. Utility Model Content

[0005] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a fresh rice production line and a rice soaking and rinsing device thereof.

[0006] According to the present invention, a rice washing and soaking device for a fresh rice production line includes a rice washing mechanism, a water filtering mechanism, and a soaking mechanism.

[0007] The rice washing mechanism includes a second storage chamber, a rice washing assembly, and a third conveying pipe. The rice washing assembly includes a first rice washing tank and a second rice washing tank. The first rice washing tank is a cylindrical structure. The upper inlet of the first rice washing tank is connected to the lower outlet of the second storage chamber. The second storage chamber contains purified water. The upper inlet of the second storage chamber is used to receive finely sieved rice. The first rice washing tank is provided with an air inlet. The second rice washing tank includes a cylindrical first tank body and a C-shaped conveying pipe connected to the first tank body. The lower inlet of the C-shaped conveying pipe is connected to the lower outlet of the first rice washing tank. The upper outlet of the C-shaped conveying pipe is connected to the upper inlet of the first tank body. The lower outlet of the first tank body is connected to the inlet of the third conveying pipe.

[0008] External high-pressure gas enters through the air inlet. The rice-water mixture discharged from the first rice washing tank is pushed by the high-pressure gas and discharged into the first tank body from bottom to top in a rotating manner along the inner cavity of the C-shaped conveying pipe. The rice-water mixture enters the water filtration mechanism through the third conveying pipe after passing through the first tank body. The wet rice separated by the water filtration mechanism is discharged into the soaking tank of the soaking mechanism.

[0009] In some embodiments, the second rice washing jar is a set of multiple sets, which are connected in series.

[0010] In some implementations, the number of the second rice washing jars is 3-5.

[0011] In some embodiments, the water filtration mechanism includes a feed valve and a water filtration tank, wherein the upper feed port of the feed valve is connected to the discharge port of the third conveying pipe, and the lower discharge port of the feed valve is connected to the feed port of the water filtration tank.

[0012] The water filter tank includes a second tank body, a filter screen, and a drain pipe. The tail end of the second tank body forms a discharge chamber, and a filter screen is provided at the front end of the discharge chamber. The filter screen divides the cavity structure of the second tank body into upper and lower spatial structures. The inlet end of the drain pipe is located inside the second tank body and below the filter screen, and the outlet end of the drain pipe is located outside the second tank body.

[0013] In some embodiments, the water filtration mechanism is further provided with a flushing assembly, which includes a flushing valve and a flushing pipe. The inlet of the flushing valve is connected to an external high-pressure cleaning water pipe, the inlet of the flushing pipe is connected to the outlet of the flushing valve, the outlet of the flushing pipe extends into the second tank, and the outlet of the flushing pipe is located above the filter screen.

[0014] In some embodiments, the soaking mechanism further includes a pumping valve assembly, which includes a second switching valve and a pumping pipe. The pumping pipe is a J-shaped conveying pipeline with multiple pipes connected in a vertical structure. The discharge port at the lower end of the soaking tank is connected to the inlet at the lower part of the pumping pipe through the second switching valve. The wet rice entering the pumping pipe moves from bottom to top along the inner cavity of the pumping pipe under the action of high-pressure air.

[0015] This utility model also provides a fresh rice production line, which uses the soaking and washing device for the fresh rice production line.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The rice washing device of this utility model connects the first and second rice washing tanks in the rice washing mechanism through a C-shaped conveying pipe, allowing the rice-water mixture to rotate and flow under the action of high-pressure air. This is equivalent to using high-pressure air as a stirring element to stir the rice-water mixture. The high-pressure air entering the rice-water mixture will form bubbles. During the rotational flow of the rice-water mixture, the bubbles in the liquid will burst. The bursting bubbles will have a scrubbing effect on the surface of the rice in the mixture, effectively improving the cleanliness of the rice after washing. At the same time, using high-pressure air as a stirring element will avoid the problem of trace impurities caused by stirring friction caused by solid stirring materials.

[0018] 2. The rice soaking and rinsing device of this utility model uses a J-shaped conveying pipe in the soaking mechanism to transport the rice-water mixture in an anti-gravity manner. This allows the rice to tumble up and down during the transport process, which not only ensures full contact with the solution and improves the uniformity of water penetration into the rice, thus enhancing the soaking effect, but also creates a similar effect to a rolling scrubbing technique by the collision between the tumbling rice grains and the bursting of air bubbles in the first conveying pipe, thereby improving the cleanliness of the rice surface and enhancing the taste of the cooked rice. Attached Figure Description

[0019] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of the rice washing device of this utility model;

[0021] Figure 2 for Figure 1 Enlarged structural diagram of section A in the middle;

[0022] Figure 3 This is a schematic diagram of the rice washing mechanism in the rice washing device of this utility model. Detailed Implementation

[0023] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0024] This embodiment provides a rice soaking and rinsing device for a fresh rice production line, such as... Figure 1-3 As shown, the system mainly includes a rice washing mechanism 1, a water filtering mechanism 2, and a soaking mechanism 3. The rice washing mechanism 1 mainly includes a second storage tank 11 and a rice washing assembly 12. The second storage tank 11 contains purified water, which receives finely sieved rice from the upstream production line through the inlet. The finely sieved rice entering the second storage tank 11 mixes with the purified water to form a rice-water mixture. The second storage tank 11 has a cylindrical upper section and a conical lower section structure. A valve is installed on the outlet pipe at the lower end of the second storage tank 11 to control the inflow and outflow of materials. Figure 3As shown, the rice washing assembly 12 mainly consists of a first rice washing tank 121, a second rice washing tank 122, and a third conveying pipe 123. The first rice washing tank 121 is a cylindrical structure with its upper inlet connected to the lower outlet of the second storage chamber 11. Its lower ends are respectively equipped with an air inlet 1211 and a discharge outlet 1212. High-pressure clean air is introduced into its cavity through the air inlet 1211, and the rice-water mixture inside the first rice washing tank 121 is discharged from the discharge outlet 1212 under the pressure of the high-pressure gas. The second rice washing tank 122 consists of a first tank body 1221, which is also a cylindrical structure, and a C-shaped conveying pipe 1222 connected to the first tank body 1221. The upper outlet of the C-shaped conveying pipe 1222 is connected to the upper inlet of the first tank body 1221, and its lower inlet is connected to the lower outlet of the first rice washing tank 121. The opening of the C-shaped conveying pipe 1222 faces the first rice washing tank 121. The rice-water mixture in the first rice washing tank 121 is propelled upwards through the C-shaped conveying pipe 1221 from bottom to top into its cavity under the pressure of high-pressure air. The second rice washing tank 122 has a discharge port at its lower part, and the rice-water mixture is conveyed to the water filtration mechanism 2 through the third conveying pipe 123. In this embodiment, the third conveying pipe 123 is also designed with a J-shaped structure, and the rice-water mixture is also conveyed to the water filtration mechanism 2 by means of anti-gravity. The first rice washing tank 121 and the second rice washing tank 122 are connected by a C-shaped conveying pipe 1221, allowing the rice-water mixture to circulate under the action of high-pressure air. This is equivalent to using high-pressure air as a stirrer to agitate the rice-water mixture. The high-pressure air entering the rice-water mixture forms bubbles, which burst during the circulating flow. These bursting bubbles have a scrubbing effect on the surface of the rice in the mixture, effectively improving the cleanliness of the rice after washing. Furthermore, using high-pressure air as a stirrer avoids the problem of trace impurities caused by friction from solid agitators. In this embodiment, there are multiple second rice washing tanks 122, preferably 3-5, all connected by the C-shaped conveying pipe 1221. Multiple second rice washing tanks 122 form a multi-stage circulating rice washing system, improving the washing effect.

[0025] The water filtration mechanism 2 mainly includes a feed valve 21 and a water filtration tank 22, such as Figure 2As shown. The inlet of the feed valve 21 is connected to the upper outlet of the third conveying pipe 123, and its outlet is connected to the inlet of the filter tank 22. The filter tank 22 is horizontally mounted on the end cap of the soaking tank 31 of the soaking mechanism 3. The filter tank 22 mainly includes a second tank body 221, a filter screen 222, and a drain pipe 223. A discharge chamber 2211 is formed at the tail end of the second tank body 221, and the discharge chamber 2211 is connected to the soaking tank 31 through a pipe. The filter screen 222 is located inside the second tank body 221, in front of the discharge chamber 2211, and divides the inner cavity in front of the discharge chamber 2211 into upper and lower spaces. The inlet of the second tank body 221 is located above the filter screen 222, the inlet of the drain pipe 223 is located inside the second tank body 221 below the filter screen 222, and the outlet of the drain pipe 223 is located outside the second tank body 221. The rice-water mixture fed into the filter screen 222 through the inlet of the second tank 221 undergoes initial separation of rice and water under the action of the filter screen 222. The separated water is discharged through the drain pipe 223. The initially separated rice-water mixture containing a small amount of water is discharged backward into the discharge chamber 2211 under the impact of the material entering through the feed pipe 222, and then flows into the soaking tank 31 from the discharge chamber 2211. In this embodiment, a rinsing assembly 23 is also provided. The rinsing assembly 23 mainly includes a rinsing valve 231 and a rinsing pipe 232. The inlet of the rinsing valve 231 is used to connect to an external high-pressure cleaning water pipe. One end of the rinsing pipe 232 is connected to the outlet of the rinsing valve 231, and the other end extends into the filter tank 22 and is located above the feed pipe 222. The rice remaining on the filter screen 2212 is swept by external cleaning water with a predetermined pressure, so that all of it enters the soaking tank 31 through the discharge chamber 2211, preventing the rice from remaining in the second tank 221 and causing problems such as mold growth.

[0026] The soaking mechanism 3 also includes a pumping valve assembly 32, which includes a second switching valve 321 and a pumping pipe 322. The pumping pipe 322 is a J-shaped conveying pipeline with multiple pipes connected in a vertical structure. The lower end interface of the soaking tank 31 is connected to the inlet of the pumping pipe 322 through the second switching valve 321. Clean air at a predetermined pressure is introduced into the pumping pipe 322 through an external pumping device, and the rice-water mixture containing a small amount of water that enters the pumping pipe 322 from the soaking tank 31 is pumped from bottom to top into the corresponding mechanism of the rice filling station by anti-gravity. The rice-water mixture is transported by a J-shaped conveying pipe using an anti-gravity method. This causes the soaking rice to tumble during transport, ensuring full contact with the solution, improving the uniformity of water penetration into the rice, and enhancing the soaking effect. Furthermore, the collisions between the tumbling rice grains and the bursting of air bubbles within the first conveying pipe create a washing effect on the rice surface, similar to a rolling scrubbing process, improving the cleanliness of the rice and enhancing its texture. In this embodiment, there are two sets of filtration mechanisms 2 and corresponding soaking tanks 31. Each set of filtration mechanisms 2 independently feeds a small amount of rice-water mixture into its respective soaking tank 31. Both soaking tanks 31 are connected to a single pumping pipe 322 to pump the small amount of rice-water mixture outwards. By using two sets of filtration mechanisms 2 and their corresponding soaking tanks 31, production continuity can be ensured even when one set requires maintenance or cleaning, maintaining production efficiency.

[0027] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0028] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A rice soaking and rinsing device for a fresh rice production line, characterized in that, It includes a rice washing mechanism (1), a water filtering mechanism (2), and a soaking mechanism (3); The rice washing mechanism (1) includes a second storage compartment (11), a rice washing assembly (12), and a third conveying pipe (13). The rice washing assembly (12) includes a first rice washing tank (121) and a second rice washing tank (122). The first rice washing tank (121) is a cylindrical structure. The upper inlet of the first rice washing tank (121) is connected to the lower outlet of the second storage compartment (11). The second storage compartment (11) contains pure water. The upper inlet of the second storage compartment (11) is used to receive finely sieved rice. The first rice washing tank (121) is provided with an air inlet. (1211) The second rice washing tank (122) includes a first tank body (1221) with a cylindrical structure and a C-shaped conveying pipe (1222) connected to the first tank body (1221). The lower end inlet of the C-shaped conveying pipe (1222) is connected to the lower end outlet of the first rice washing tank (121), the upper end outlet of the C-shaped conveying pipe (1222) is connected to the upper end inlet of the first tank body (1221), and the lower end outlet of the first tank body (1221) is connected to the inlet of the third conveying pipe (13). External high-pressure gas enters through the air inlet (1211). The rice-water mixture discharged from the first rice washing tank (121) is pushed by the high-pressure gas and discharged from the bottom to the top of the inner cavity of the C-shaped conveying pipe (1222) in a rotating manner. The rice-water mixture passes through the first tank (1221) and enters the water filtration mechanism (2) through the third conveying pipe (13). The wet rice separated by the water filtration mechanism (2) is discharged into the soaking tank (31) of the soaking mechanism (3).

2. The rice soaking and washing device for a fresh rice production line according to claim 1, characterized in that, The second rice washing jar (122) is in multiple sets, and the multiple sets of rice washing jars (122) are connected in series.

3. The rice soaking and washing device for a fresh rice production line according to claim 2, characterized in that, The number of the second rice washing jar (122) is 3-5.

4. The rice soaking and washing device for a fresh rice production line according to claim 2 or 3, characterized in that, The water filtration mechanism (2) includes a feed valve (21) and a water filtration tank (22). The upper feed port of the feed valve (21) is connected to the outlet of the third conveying pipe (13), and the lower outlet of the feed valve (21) is connected to the feed port of the water filtration tank (22). The water filter tank (22) includes a second tank body (221), a filter screen (222), and a drain pipe (223). The tail of the second tank body (221) forms a discharge chamber (2211). A filter screen (222) is provided at the front end of the discharge chamber (2211). The filter screen (222) divides the cavity structure of the second tank body (221) into an upper and lower spatial structure. The inlet end of the drain pipe (223) is located inside the second tank body (221) and below the filter screen (222). The outlet end of the drain pipe (223) is located outside the second tank body (221).

5. The rice soaking and washing device for a fresh rice production line according to claim 4, characterized in that, The water filtration mechanism (2) is also provided with a flushing assembly (23), which includes a flushing valve (231) and a flushing pipe (232). The inlet of the flushing valve (231) is used to connect with an external high-pressure cleaning water pipe, and the inlet of the flushing pipe (232) is connected with the outlet of the flushing valve (231). The outlet of the flushing pipe (232) extends into the second tank (221), and the outlet of the flushing pipe (232) is located above the filter screen (222).

6. The rice soaking and washing device for a fresh rice production line according to claim 1, characterized in that, The soaking mechanism (3) also includes a pumping valve group (32), which includes a second switching valve (321) and a pumping pipe (322). The pumping pipe (322) is a J-shaped conveying pipeline with multiple pipes connected to form a vertical structure. The discharge port at the lower end of the soaking tank (31) is connected to the inlet at the lower part of the pumping pipe (322) through the second switching valve (321). The wet rice entering the pumping pipe (322) moves from bottom to top along the inner cavity of the pumping pipe (322) under the action of high pressure air.

7. A fresh rice production line, characterized in that, The rice soaking and rinsing device for a fresh rice production line as described in any one of claims 1-6 is adopted.

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