A steam heating device for rice noodles

Abstract

The application discloses a steam heating device suitable for rice powder and relates to the technical field of rice powder steam heating. The steam heating device suitable for rice powder comprises a supporting frame, a protective cover and a conveyor with a conveying belt are fixedly installed on the supporting frame, the middle part of the conveyor is located in the protective cover, and the steam heating device further comprises two groups of steam heating assemblies which are arranged on the inner side and the outer side of the conveying belt respectively; the steam heating assembly comprises exhaust covers and gas collecting covers which are symmetrically arranged at the input end and the output end of the conveying belt, and the ports of the exhaust covers and the gas collecting covers are obliquely directed to the surface of the conveying belt; a steam box and a recovery box are installed on the supporting frame, and the exhaust end of the steam box is connected with the exhaust cover; the steam heating device can recycle the used steam, the recycled steam can be cyclically utilized, the loss of heat energy and moisture is reduced, the rice powder is not easy to be oxidized under high temperature, and the subsequent storage and packaging are facilitated.

Description

Technical Field

[0001] This invention belongs to the field of rice noodle steam heating technology, specifically, it relates to a steam heating device suitable for rice noodles. Background Technology

[0002] During the production of rice noodles, the shaped noodles are evenly spread on a mesh conveyor belt. Steam is used to heat and shape the rice noodles quickly and comprehensively through the mesh. This process ensures even cooking and prevents the noodles from sticking together due to the breathability of the mesh belt, thus maintaining the smooth and chewy texture of the rice noodles.

[0003] However, the existing steam heating method has obvious shortcomings: a large amount of high-temperature steam after heating is not recycled and is directly released into the air, which not only causes serious waste of heat energy and moisture, but also makes rice noodles prone to oxidation under high temperature exposure, resulting in yellowing of the surface of the noodles and damage to the flavor, thus affecting the overall quality of the product. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a steam heating device suitable for rice noodles that can overcome or at least partially solve the above problems.

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: A steam heating device suitable for rice noodles includes a support frame, on which a protective cover and a conveyor with a conveyor belt are fixedly mounted. The middle part of the conveyor is located inside the protective cover. The device also includes two sets of steam heating components, respectively disposed on the inner and outer sides of the conveyor belt. Each steam heating component includes an exhaust hood and a gas collecting hood symmetrically arranged at the input and output ends of the conveyor belt, with the ports of both the exhaust hood and the gas collecting hood inclined towards the surface of the conveyor belt. A steam box and a recovery box are both mounted on the support frame. The exhaust end of the steam box is connected to the exhaust hood, and the output end of the gas collecting hood is connected to a condensation device placed inside the recovery box. A storage tank for supplying carbon dioxide gas into the exhaust hood is mounted on the support frame.

[0006] In order to effectively collect and use steam, preferably, the condensation device is fixedly connected to the horizontal pipe at the bottom of the recovery tank, and multiple short pipes are fixedly connected to the horizontal pipe at equal intervals. The recovery tank stores water, and the horizontal pipe is connected to the gas collection hood through the recovery pipe.

[0007] To facilitate the delivery of steam to the exhaust hood, preferably, a main pipe is fixedly connected to the top of the steam tank, and the main pipe is connected to the exhaust hood via a steam pipe.

[0008] To facilitate the recycling of the collected steam, the output end of the storage tank is connected to the main pipeline via a gas supply pipe, and the top of the recovery box is fixedly connected to a circulation pipe that is connected to the main pipeline.

[0009] To ensure more uniform heating of both sides of the rice noodles, preferably, the surface of the conveyor belt is provided with equally spaced inclined grooves, a telescopic device is fixedly installed inside the protective cover, a crossbar is fixedly installed at the telescopic end of the telescopic device, and two inclined plates are connected to the crossbar, with the inclined plates facing the inner surface of the conveyor belt.

[0010] To reduce the obstruction of steam by the inclined plate, an inner groove is further provided on the inclined plate, making the shape of the inclined plate resemble a window frame, and the inclined plate is arched in the middle of the side facing the conveyor belt.

[0011] To further prevent the inclined plate from puncturing the rice noodles, a strip-shaped sleeve is fixedly connected to the cross frame, and one end of the inclined plate is slidably installed inside the strip-shaped sleeve. The protective cover is provided with a shaking part that drives the inclined plate to reciprocate within the strip-shaped sleeve.

[0012] To enable the inclined plate to vibrate, the vibrating part further includes a support plate fixedly connected inside the protective cover, an inclined rod fixedly connected to the support plate, a plurality of equally spaced protrusions fixedly connected to the inclined rod, a roller extending to the outer wall of the strip-shaped housing mounted on the inclined plate via a support leg, a spring installed between the inclined plate and the inner wall of the strip-shaped housing, and the roller fitting against the outer wall of the inclined rod.

[0013] To facilitate the addition of water to the steam tank, preferably, a circulation pump is fixedly installed on the outer wall of the recovery tank, the input end of the circulation pump extends into the recovery tank, and the output end of the circulation pump is fixedly connected to an inlet pipe extending into the steam tank.

[0014] To facilitate the drainage of water from the conveyor belt, preferably, the conveyor is provided in two symmetrical sets, and the two sets of conveyors are distributed in a figure-eight shape inside the protective cover.

[0015] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: 1. This invention uses a gas collection hood to collect used steam and transport it to a recovery tank. The recovery tank condenses and liquefies the steam with water, and the water in the recovery tank is also heated. When the steam tank needs to be replenished, the warm water in the recovery tank is supplied to the steam tank, thus enabling the recovered steam to be recycled and reducing the loss of heat energy and water.

[0016] 2. This invention delivers carbon dioxide gas from the storage tank to the exhaust hood, where it mixes with the steam inside the exhaust hood and is then blown onto the surface of the rice noodles. Because the steam contains carbon dioxide, the rice noodles are less likely to oxidize at high temperatures, which also facilitates subsequent storage and packaging. On the other hand, the carbon dioxide also makes the rice noodles fluffier and improves their texture.

[0017] 3. This invention allows the carbon dioxide and some steam discharged from the recycling tank to be discharged through the circulation pipe and then into the main pipeline, where they mix again with the steam in the main pipeline. This allows the collected carbon dioxide to be recycled, effectively reducing resource waste.

[0018] 4. This invention uses a telescopic device to drive the crossbeam to move back and forth, which in turn drives the inclined plate to move back and forth. This allows the part of the rice noodles that is covered by the conveyor belt to be exposed to steam, so that the lower surface of the rice noodles can also receive good steam heating. The heating of the rice noodles will be more uniform, and the water remaining between the rice noodles and the upper surface of the conveyor belt will be easier to drain out. This prevents the rice noodles from being affected by water accumulation, thus preventing them from sticking to the surface of the conveyor belt.

[0019] 5. In this invention, the inclined plate swings back and forth within the strip-shaped housing under the combined action of the spring and the protrusion. As a result, the inclined plate moves towards the rice noodles and shakes back and forth. This makes it less likely for the inclined plate to puncture the rice noodles on the conveyor belt and allows for a more efficient lifting action of the rice noodles.

[0020] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0021] In the attached diagram: Figure 1 A three-dimensional structural diagram of a steam heating device suitable for rice noodles proposed in this invention. Figure 1 ; Figure 2 This is a partial structural diagram of a conveyor for a steam heating device suitable for rice noodles proposed in this invention; Figure 3 This is a schematic diagram of the steam box and recovery box structure of a steam heating device for rice noodles proposed in this invention; Figure 4 This is a partial structural schematic diagram of a steam heating device suitable for rice noodles proposed in this invention; Figure 5 This is a partial structural diagram of the conveyor belt of a steam heating device for rice noodles proposed in this invention; Figure 6 This is a schematic diagram of the inclined plate lifting state of a steam heating device for rice noodles proposed in this invention; Figure 7 This invention provides a steam heating device suitable for rice noodles. Figure 6 Schematic diagram of part A in the middle; Figure 8 This is a partial exploded view of a steam heating device for rice noodles proposed in this invention; Figure 9 This invention provides a steam heating device suitable for rice noodles. Figure 8 Schematic diagram of part B in the middle section.

[0022] In the diagram: 1. Support frame; 2. Protective cover; 3. Conveyor; 4. Conveyor belt; 5. Steam box; 6. Exhaust hood; 7. Gas collection hood; 8. Recovery box; 9. Steam pipe; 10. Horizontal pipe; 11. Recovery pipe; 12. Short pipe; 13. Storage tank; 14. Gas supply pipe; 15. Main pipeline; 16. Circulation pipe; 17. Liquid inlet pipe; 18. Circulation pump; 19. Inclined trough; 20. Telescopic device; 21. Horizontal frame; 22. Inclined plate; 23. Strip sleeve; 24. Gap; 25. Spring; 26. Roller; 27. Diagonal rod; 28. Protrusion; 29. ​​Support plate; 30. Inner trough. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] Example 1: Refer to Figures 1-9 As shown, a steam heating device suitable for rice noodles includes a support frame 1 for supporting the entire device. A protective cover 2 and a conveyor 3 with a conveyor belt 4 are fixedly installed on the support frame 1. The surface of the conveyor belt 4 is provided with vent holes, which are not shown in the diagram. The middle part of the conveyor 3 is located inside the protective cover 2. The device also includes two sets of steam heating components for discharging steam, which are respectively arranged on the inner and outer sides of the conveyor belt 4. The steam heating components include an exhaust hood 6 and a gas collecting hood 7 symmetrically arranged at the input and output ends of the conveyor belt 4. The exhaust hood 6 is used to continuously discharge steam, and the gas collecting hood 7 is used to collect the steam after use. The ports of the exhaust hood 6 and the gas collecting hood 7 are inclined towards the surface of the conveyor belt 4 and are distributed in an inverted V-shape inside the protective cover 2. A steam box 5 for generating steam and a recovery box 8 for storing spare water are both installed on the support frame 1. The exhaust end of the steam box 5 is connected to the exhaust hood 6, and the output end of the gas collecting hood 7 is connected to a condensation device placed in the recovery box 8. A storage tank 13 for supplying carbon dioxide gas to the exhaust hood 6 is installed on the support frame 1.

[0025] Specifically, during use, the conveyor 3 transports rice noodles to the protective cover 2 via the conveyor belt 4, while the steam box 5 sprays steam onto the inner and outer surfaces of the conveyor belt 4 through two sets of exhaust hoods 6, so that the upper and lower surfaces of the rice noodles are heated by steam. Since the exhaust hoods 6 are tilted towards the surface of the conveyor belt 4, the steam will flow along the surface of the conveyor belt 4. At this time, the steam collection hood 7 will draw the flowing steam from the other side and transport it to the recovery box 8. The condensation device in the recovery box 8 will condense and liquefy the steam with water, and the water in the recovery box 8 will also be heated. When the steam box 5 needs to be replenished, the warm water in the recovery box 8 will be transported to the steam box 5, so that the recovered steam can be recycled, reducing the loss of heat energy and water. In addition, during this period, the storage tank 13 will deliver the carbon dioxide gas inside to the exhaust hood 6 and mix it with the steam inside the exhaust hood 6. Then, it will be blown onto the surface of the rice noodles. Since the steam contains carbon dioxide, the rice noodles are not easily oxidized at high temperatures, which also facilitates subsequent storage and packaging. On the other hand, carbon dioxide can make the rice noodles fluffier and taste better.

[0026] During use, it was found that the inverted V-shaped exhaust hood 6 and gas collection hood 7 can make the rice noodles heat more evenly.

[0027] Reference Figure 3 As shown, a circulation pump 18 is fixedly installed on the outer wall of the recycling tank 8. The input end of the circulation pump 18 extends into the recycling tank 8, and the output end of the circulation pump 18 is fixedly connected to an inlet pipe 17 extending into the steam tank 5.

[0028] Specifically, when water needs to be added to the steam box 5, the circulation pump 18 is turned on. The circulation pump 18 can draw the preheated water in the recovery box 8 and then deliver it to the steam box 5 through the liquid inlet pipe 17.

[0029] Reference Figures 1-2 As shown, the conveyor 3 has two symmetrical sets, and the two sets of conveyors 3 are distributed in a figure-eight shape inside the protective cover 2. Thus, the liquefied water on the conveyor belt 4 can flow autonomously to both sides of the protective cover 2. This can effectively collect the liquefied water and reduce the impact of soaking the rice noodles on the taste.

[0030] Example 2: Refer to Figure 5 A steam heating device suitable for rice noodles is basically the same as in Example 1, but specifically discloses the specific implementation of the condensation device. Furthermore, the following is also disclosed: Reference Figure 4As shown, the above-mentioned condensation device is fixedly connected to the horizontal pipe 10 at the bottom of the recovery tank 8. A plurality of short pipes 12 are fixedly connected to the horizontal pipe 10 at equal intervals. The number of short pipes 12 is 5 to 20. In this application, the preferred number is 12. Water is stored in the recovery tank 8. The horizontal pipe 10 is connected to the gas collection hood 7 through the recovery pipe 11. An air pump is installed in the recovery pipe 11. The air pump is not shown in the figure.

[0031] Specifically, in use, conveyor 3 transports rice noodles to the protective cover 2 via conveyor belt 4, while steam box 5 sprays steam onto both the inner and outer surfaces of conveyor belt 4 through two sets of exhaust hoods 6, thus heating both the upper and lower surfaces of the rice noodles. Since the exhaust hoods 6 are tilted towards the surface of conveyor belt 4, the steam flows along the surface of conveyor belt 4. At this time, the steam collection hood 7 absorbs the flowing steam from the other side and transports it to the recovery box 8. The condensation device in the recovery box 8 then condenses and liquefies the steam using water. The water in the recovery tank 8 is also heated. When the steam tank 5 needs to be filled with water, the warm water in the recovery tank 8 is delivered to the steam tank 5, so that the recovered steam can be recycled, reducing the loss of heat energy and water. During the heating period, the air pump will draw air from the gas collection hood 7 through the recovery pipe 11. The gas collection hood 7 will draw in the exhaust gas in the protective cover 2 and then deliver it to the horizontal pipe 10. Finally, it will be discharged into the water in the recovery tank 8 through the short pipe 12. When the exhaust gas passes through the water, it will be liquefied and recovered, and most of the carbon dioxide will be discharged from the water.

[0032] Reference Figure 3 As shown, a main pipe 15 is fixedly connected to the top of the steam box 5. The main pipe 15 is connected to the exhaust hood 6 through the steam pipe 9. During heating, the steam generated in the steam box 5 will be discharged into the main pipe 15, and then transported to the exhaust hood 6 through the steam pipe 9, and finally discharged from the exhaust hood 6.

[0033] Reference Figure 3 and Figure 4 As shown, the output end of the storage tank 13 is connected to the main pipeline 15 through the air supply pipe 14. A valve is installed on the air supply pipe 14. The top of the recovery box 8 is fixedly connected to the circulation pipe 16, which is connected to the main pipeline 15.

[0034] Specifically, during heating, the valve on the gas supply pipe 14 is opened, and the carbon dioxide gas in the storage tank 13 is discharged through the gas supply pipe 14 and transported to the main pipe 15, where it mixes with the steam in the main pipe 15. Meanwhile, the carbon dioxide and some steam discharged from the recovery tank 8 are discharged from the circulation pipe 16 and discharged into the main pipe 15, where they mix again with the steam in the main pipe 15. This allows the collected carbon dioxide to be recycled, effectively reducing the waste of resources.

[0035] Example 3: Reference Figure 4 A steam heating device suitable for rice noodles, basically the same as in Example 2, but with added specific implementation methods to improve the heating uniformity of the lower surface of the rice noodles, and further: The surface of the conveyor belt 4 is provided with equally spaced inclined grooves 19. The inclination angle of the inclined grooves 19 is the same as that of the exhaust hood 6. A telescopic device 20 is fixedly installed inside the protective cover 2. The telescopic device 20 is a cylinder or an electric telescopic rod. A crossbeam 21 is fixedly installed at the telescopic end of the telescopic device 20. Two inclined plates 22 are connected to the crossbeam 21. The inclined plates 22 face the inner surface of the conveyor belt 4 and are elastic.

[0036] Specifically, during use, the conveyor 3 transports rice noodles to the protective cover 2 via the conveyor belt 4, while the steam box 5 sprays steam onto both the inner and outer surfaces of the conveyor belt 4 through two sets of exhaust hoods 6, thus heating both the upper and lower surfaces of the rice noodles. Since the exhaust hoods 6 are tilted towards the surface of the conveyor belt 4, the steam flows along the surface of the conveyor belt 4. At this time, the steam collection hood 7 absorbs the flowing steam from the other side and transports it to the recovery box 8. The condensation device in the recovery box 8 condenses and liquefies the steam with water, and the water in the recovery box 8 is also heated. When the steam box 5 needs water, the warm water in the recovery box 8 is supplied to the steam box 5, thus allowing the recovered steam to be recycled, reducing heat and moisture loss. During the heating of the rice noodles, the telescopic device 20 drives the crossbeam 21 to move back and forth, which in turn drives the inclined plates 22 to move back and forth. When the two inclined plates 22 extend, they insert into one of the inclined grooves 19 and extend from the upper surface of the conveyor belt 4. The rice noodles on the conveyor belt 4 are lifted upwards, creating a gap 24 between the rice noodles and the surface of the conveyor belt 4. Steam can then pass through the mesh on the conveyor belt 4 and the inclined groove 19 into the gap 24. This exposes the part of the rice noodles that was previously covered by the conveyor belt 4 to the steam, allowing the lower surface of the rice noodles to receive good steam heating. The heating of the rice noodles is more uniform, and the moisture remaining between the rice noodles and the upper surface of the conveyor belt 4 is easier to drain out. This prevents the rice noodles from being affected by water accumulation, thus ensuring a better texture. On the other hand, it also prevents the rice noodles from sticking to the surface of the conveyor belt 4. When the inclined plate 22 retracts, it detaches from the lower surface of the rice noodles and is pulled out of the inclined groove 19. Since the inclined plate 22 is elastic, the continuously moving conveyor belt 4 does not significantly affect the extension and retraction of the inclined plate 22. Of course, to reduce the impact on the inclined plate 22, in practice, the conveying speed of the conveyor belt 4 can be reduced or the extension and retraction speed of the inclined plate 22 can be increased.

[0037] Reference Figure 8As shown, the inclined plate 22 has an inner groove 30, which makes the inclined plate 22 look like a window frame. This is to reduce the resistance of the inclined plate 22 to steam. The inclined plate 22 is arched in the middle of one side facing the conveyor belt 4. When the rice noodles stick together, the inclined plate 22 can pry the rice noodles on the conveyor belt 4 from small area to large area.

[0038] Example 4: Reference Figure 4 A steam heating device suitable for rice noodles, basically the same as in Example 3, but with a specific addition to make the inclined plate 22 less likely to break the rice noodles. Furthermore: A strip-shaped housing 23 is fixedly connected to the aforementioned cross frame 21. One end of the inclined plate 22 is slidably installed inside the strip-shaped housing 23. The protective cover 2 is provided with a shaking part that drives the inclined plate 22 to reciprocate within the strip-shaped housing 23. The shaking part includes a support plate 29 fixedly connected inside the protective cover 2. An inclined rod 27 is fixedly connected to the support plate 29. A plurality of equally spaced protrusions 28 are fixedly connected to the inclined rod 27. The protrusions 28 are semi-circular in shape. A roller 26 extending to the outer wall of the strip-shaped housing 23 is installed on the inclined plate 22 via a support leg. A spring 25 is installed between the inclined plate 22 and the inner wall of the strip-shaped housing 23. The roller 26 is in contact with the outer wall of the inclined rod 27.

[0039] Specifically, when the telescopic device 20 moves the cross frame 21, the cross frame 21 will move the strip housing 23 synchronously. The strip housing 23 will then drive the roller 26 to roll along the inclined bar 27 and press over multiple protrusions 28 in sequence. Under the combined action of the spring 25 and the protrusions 28, the inclined plate 22 will swing back and forth inside the strip housing 23. As a result, the inclined plate 22 moves towards the rice noodles and will also shake back and forth. This makes it less likely for the inclined plate 22 to puncture the rice noodles on the conveyor belt 4 and can complete the lifting action of the rice noodles more efficiently.

[0040] In use, the conveyor 3 transports rice noodles to the protective cover 2 via the conveyor belt 4, while the steam box 5 sprays steam onto the inner and outer surfaces of the conveyor belt 4 through two sets of exhaust hoods 6, so that the upper and lower surfaces of the rice noodles are heated by steam. Since the exhaust hoods 6 are tilted towards the surface of the conveyor belt 4, the steam will flow along the surface of the conveyor belt 4. At this time, the gas collection hood 7 will draw the flowing steam from the other side and transport it to the recycling box 8. The condensation device in the recycling box 8 will condense and liquefy the steam with water, and the water in the recycling box 8 will also be heated. When the steam box 5 needs to be filled with water, the circulation pump 18 is turned on. The circulation pump 18 can draw the preheated water in the recovery box 8 and then transport it to the steam box 5 through the liquid inlet pipe 17. In this way, the recovered steam can be recycled, reducing the loss of heat energy and water. During this period, the storage tank 13 will deliver the carbon dioxide gas inside to the exhaust hood 6 and mix it with the steam in the exhaust hood 6. Then, it will blow the mixture onto the surface of the rice noodles. Since the steam contains carbon dioxide, the rice noodles are less likely to oxidize at high temperatures, which also makes them easier to store and package. On the other hand, carbon dioxide can make the rice noodles fluffier and taste better. During heating, the vacuum pump draws air from the gas collection hood 7 through the recovery pipe 11. The gas collection hood 7 then draws in the waste gas from the protective cover 2 and delivers it to the horizontal pipe 10. Finally, it is discharged into the water in the recovery tank 8 through the short pipe 12. When the waste gas passes through the water, it is liquefied and recovered, and most of the carbon dioxide is discharged from the water. The carbon dioxide and some steam discharged from the recovery tank 8 are discharged from the circulation pipe 16 and into the main pipe 15, where they mix again with the steam in the main pipe 15. This allows the collected carbon dioxide to be recycled again, effectively reducing the waste of resources.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been described above with reference to preferred embodiments, it is not intended to limit the present invention. Any modifications or alterations made by those skilled in the art without departing from the scope of the present invention using the above-described technical content can be considered as equivalent embodiments. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A steam heating device for rice noodles, comprising a support frame (1), on which a protective cover (2) and a conveyor (3) with a conveyor belt (4) are fixedly mounted, the middle part of the conveyor (3) being located inside the protective cover (2), characterized in that, Also includes: Two sets of steam heating components are respectively installed on the inner and outer sides of the conveyor belt (4); The steam heating assembly includes an exhaust hood (6) and a gas collecting hood (7) at the input and output ends of the conveyor belt (4) arranged symmetrically. The ports of the exhaust hood (6) and the gas collecting hood (7) are inclined toward the surface of the conveyor belt (4). Both the steam box (5) and the recovery box (8) are mounted on the support frame (1). The exhaust end of the steam box (5) is connected to the exhaust hood (6), the output end of the gas collection hood (7) is connected to a condensation device placed in the recovery box (8), and a storage tank (13) for conveying carbon dioxide gas into the exhaust hood (6) is installed on the support frame (1).

2. The steam heating device for rice noodles according to claim 1, characterized in that, The condensation device is fixedly connected to the horizontal pipe (10) at the bottom of the recovery box (8). Multiple short pipes (12) are fixedly connected to the horizontal pipe (10) at equal intervals. Water is stored in the recovery box (8). The horizontal pipe (10) is connected to the gas collection hood (7) through the recovery pipe (11).

3. A steam heating device suitable for rice noodles according to claim 1, characterized in that, The top of the steam box (5) is fixedly connected to a main pipe (15), which is connected to the exhaust hood (6) through a steam pipe (9).

4. A steam heating device suitable for rice noodles according to claim 3, characterized in that, The output end of the storage tank (13) is connected to the main pipeline (15) through the gas supply pipe (14), and the top of the recycling box (8) is fixedly connected to the circulation pipe (16) which is connected to the main pipeline (15).

5. A steam heating device suitable for rice noodles according to claim 1, characterized in that, The surface of the conveyor belt (4) is provided with equally spaced inclined grooves (19). A telescopic device (20) is fixedly installed inside the protective cover (2). A cross frame (21) is fixedly installed at the telescopic end of the telescopic device (20). Two inclined plates (22) are connected to the cross frame (21). The inclined plates (22) face the inner surface of the conveyor belt (4).

6. A steam heating device suitable for rice noodles according to claim 5, characterized in that, The inclined plate (22) has an inner groove (30) which makes the inclined plate (22) look like a window frame. The inclined plate (22) is arched in the middle of one side facing the conveyor belt (4).

7. A steam heating device suitable for rice noodles according to claim 6, characterized in that, A strip-shaped sleeve (23) is fixedly connected to the cross frame (21). One end of the inclined plate (22) is slidably installed inside the strip-shaped sleeve (23). The protective cover (2) is provided with a shaking part that drives the inclined plate (22) to reciprocate within the strip-shaped sleeve (23).

8. A steam heating device suitable for rice noodles according to claim 7, characterized in that, The shaking part includes a support plate (29) fixedly connected inside the protective cover (2), a diagonal rod (27) fixedly connected to the support plate (29), a plurality of equally spaced protrusions (28) fixedly connected to the diagonal rod (27), a roller (26) extending to the outer wall of the strip-shaped shell (23) is installed on the diagonal plate (22) through the support leg, a spring (25) is installed between the diagonal plate (22) and the inner wall of the strip-shaped shell (23), and the roller (26) is in contact with the outer wall of the diagonal rod (27).

9. A steam heating device suitable for rice noodles according to claim 1, characterized in that, A circulation pump (18) is fixedly installed on the outer wall of the recycling tank (8). The input end of the circulation pump (18) extends into the recycling tank (8), and the output end of the circulation pump (18) is fixedly connected to an inlet pipe (17) extending into the steam tank (5).

10. A steam heating device suitable for rice noodles according to claim 1, characterized in that, The conveyor (3) is provided in two symmetrical groups, and the two groups of conveyors (3) are distributed in a figure-eight shape inside the protective cover (2).

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