Rice crust forming apparatus

Abstract

The utility model discloses a kind of pot crust forming equipment, it is related to the production technical field of pot crust, shaft core horizontal and parallel arrangement's front sprocket shaft, rear sprocket shaft are provided on rack, the left and right ends of front sprocket shaft are connected with front sprocket, the left and right ends of rear sprocket shaft are connected with rear sprocket, and the front sprocket and rear sprocket of left, right end are respectively arranged with left, right side's conveying chain and are engaged;With the characteristics of integration of forming and baking, pot crust is conveniently formed simultaneously and high heat energy utilization rate.

Description

Technical Field

[0001] This utility model relates to the field of rice crust production technology, specifically to a rice crust forming device. Background Technology

[0002] Rice crust is a traditional food with a unique flavor and texture, loved by a wide range of consumers. It originated as a byproduct of the traditional rice-cooking process, initially formed as a crispy layer at the bottom of the pot after the rice was heated. Due to its unique crispy texture, it gradually gained attention and developed into an independent food. As a popular snack, the market demand for rice crust continues to grow, and its production method has shifted from traditional manual production to mechanized production.

[0003] A paper titled "An Integrated Rice Crust Production Line for Multiple Baking (Forming, Baking, and Packaging)" (Document No. CN111480661A) discloses a fully automated rice crust production technology. In this process, the rice crust raw materials are first fed into a rice crust forming machine, then sequentially fed into a primary baking section, a secondary baking section, and a distribution packaging section. If the rice crust is not thoroughly baked, it can be sent to a circulating baking section, and then sequentially fed into the secondary baking section and the distribution packaging section, thus ensuring the overall quality of the rice crust. However, in this paper, the forming and baking of the rice crust are separated, requiring separate workstations. This not only results in a large floor space for the entire production line but also presents difficulties in connecting the rice crust forming machine, the primary baking section, the secondary baking section, and the distribution packaging section. Furthermore, the process of the conveyor belt passing through the baking oven cavity involves heating components baking the rice crust, including the conveyor belt itself. The amount of heat energy absorbed and utilized by the rice crust is extremely limited, leading to significant heat loss. Utility Model Content

[0004] The purpose of this invention is to provide a rice crust forming device that integrates forming and baking, which makes rice crust forming convenient and has a high heat energy utilization rate.

[0005] This utility model can be achieved through the following technical solution: a rice crust forming device, wherein a front sprocket shaft and a rear sprocket shaft are arranged horizontally and in parallel on the frame, and a front sprocket shaft is connected to the left and right ends of the front sprocket shaft, and a rear sprocket is connected to the left and right ends of the rear sprocket shaft, and a left and right conveyor chain is respectively wound and meshed on the left and right front sprocket and the rear sprocket.

[0006] The left and right sides of the fixed heating plate are fixedly connected to the left and right conveyor chains respectively. The left side of the movable heating plate is hinged to the left side of the fixed heating plate. The movable heating plate on the upper chain segment of the conveyor chain is located above the fixed heating plate which is flat on the plate surface.

[0007] The right side of the upstream section of the conveyor chain is equipped with a landing gear that guides the movable heating plate to rise and fall. The conveyor chain stroke covered by the landing gear is equipped with a feeding mechanism for rice crust raw material. The downstream conveyor chain is located inside the drying oven, and the heating unit inside the drying oven heats the fixed heating plate and the movable heating plate.

[0008] The movable heating plate at the downstream or upstream end of the conveyor chain is separated from the fixed heating plate at an angle to allow finished rice crusts to fall. A constraint guide rod is set on the right side of the conveyor chain. The end of the constraint guide rod at the downstream end of the right conveyor chain surrounds the conveyor chain and extends along the lower section of the conveyor chain to the upstream end of the conveyor chain. The constraint guide rod is connected to the upstream end of the landing gear.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] In this application, a fixed heating plate and a movable heating plate for forming rice crust are installed on a conveyor chain. Utilizing the cyclical transport of the conveyor chain, along with the guiding action of the lifting frame and constraint guide rods, the movable heating plate is sequentially raised, the rice crust raw material is fed onto the fixed heating plate, the movable heating plate falls back down to compact the raw material, the raw material between the movable and fixed heating plates is baked, and the material is discharged using the constraint guide rods. This achieves integrated rice crust forming and baking. The raw material falls onto the fixed heating plate and then onto the movable heating plate, rapidly forming rice crust of uniform thickness and quality within the equidistant space between the fixed and movable heating plate surfaces, providing both forming efficiency and quality consistency. Within the tunnel-type oven, the fixed and movable heating plates can be densely arranged adjacent to each other, with almost no idle space between adjacent sets of fixed and movable heating plates, increasing production capacity while ensuring efficient use of heating energy. The baked product immediately reaches a high-cleanliness cooling zone after detaching from the heating plate, providing a prerequisite guarantee for meeting food hygiene and safety requirements. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a detailed structural diagram of the upper and lower parts of the conveyor chain of this utility model;

[0013] Figure 3 This is a schematic diagram of the constraint guide rod in this utility model;

[0014] Figure 4 This is a schematic diagram of the scraping mechanism in this utility model;

[0015] Figure 5 , 6 Figure 7 is a schematic diagram of the feeding mechanism in this utility model;

[0016] Figure 8 This is a schematic diagram of the compaction mechanism in this utility model;

[0017] Figure 9 for Figure 2 Enlarged view of a portion of region A in the middle. Detailed Implementation

[0018] Please see Figure 1-9 As shown, a rice crust forming device includes a frame 10 with a horizontally aligned and parallel front sprocket shaft 21 and a rear sprocket shaft 22. Front sprockets 211 are connected to the left and right ends of the front sprocket shaft 21, and rear sprockets 221 are connected to the left and right ends of the rear sprocket shaft 22. Left and right conveyor chains 23 are respectively wound and meshed around the left and right ends of the front sprockets 211 and rear sprockets 221. A fixed heating plate 31 is fixedly connected to the left and right conveyor chains 23 on its left and right sides, respectively. A movable heating plate 32 is hinged to the left side of the fixed heating plate 31. The movable heating plate 32 on the upper segment of the conveyor chain 23 is located above the fixed heating plate 31, which is flat on the plate surface. A guide valve is provided on the right side of the upstream segment of the conveyor chain 23. The landing gear 51 is raised and lowered by the movable heating plate 32. The conveyor chain 23 covered by the landing gear 51 is equipped with a feeding mechanism 40 for rice as raw material for rice crust. The conveyor chain 23 downstream of the landing gear 51 is located in the oven 60. The heating unit in the oven 60 heats the fixed heating plate 31 and the movable heating plate 32. The movable heating plate 32 at the downstream end or upstream end of the conveyor chain 23 is separated from the fixed heating plate 31 at an angle for the finished rice crust to fall. A constraint guide rod 52 is set on the side where the right conveyor chain 23 is located. The rod end of the constraint guide rod 52 at the downstream end of the right conveyor chain 23 surrounds the conveyor chain 23 and extends along the lower section of the conveyor chain 23 to the upstream end of the conveyor chain 23. The constraint guide rod 52 is connected to the upstream end of the landing gear 51.

[0019] In the above scheme, the landing gear 51 lifts the movable heating plate 32 located at the upstream end of the conveyor chain 23 upwards. As the conveyor chain 23 moves backwards, when the movable heating plate 32 and the fixed heating plate 31 form an angle of 70°-80°, the movable heating plate 32 and the fixed heating plate 31 are positioned at the feeding mechanism 40, which is located within the area formed by the angle between the movable heating plate 32 and the fixed heating plate 31. At this time, the feeding mechanism 40 feeds the rice crust raw material into the surface of the fixed heating plate 31. Then, as the conveyor chain 23 continues to move backwards, the movable heating plate 32, guided by the landing gear 51, falls back downwards to the corresponding fixed heating plate. The movable heating plate 32 and the fixed heating plate 31 are placed on the top surface of the fixed heating plate 31 to compact the rice raw material for the rice crust. Then, the movable heating plate 32 and the fixed heating plate 31 enter the oven 60 to bake the rice raw material for the rice crust. After baking in the oven, the movable heating plate 32 and the fixed heating plate 31 are moved to the downstream end of the conveyor chain 23. Under the action of the constraint guide rod 52, the movable heating plate 32 and the fixed heating plate 31 will be separated at an angle at the downstream end or the upstream end of the conveyor chain 23, so that the formed rice crust can be discharged from the downstream end or the upstream end of the conveyor chain 23. This realizes the integration of rice crust forming and baking, which makes rice crust forming convenient and has a high heat energy utilization rate.

[0020] The constraint guide rod 52 has a straight section located below the lower segment of the conveyor chain 23. This straight section ensures that the movable heating plate 32 and the fixed heating plate 31 remain in a closed state. The front and rear ends of the constraint guide rod 52 have arc-shaped sections, which allow the movable heating plate 32 and the fixed heating plate 31 to be separated at an angle. A limit rod is also provided on the right side of the upstream section of the conveyor chain 23. The limit rod is arranged at equal intervals with the landing gear 51, and the distance between the limit rod and the landing gear 51 forms the movement track of the circular roller 321. The upper end of the arc-shaped section at the front end of the constraint guide rod 52 is connected to one end of the limit rod. Since the conveyor chain 23 moves too fast, the movable heating plate 32 will experience a large centrifugal force. The limit rod can prevent the movable heating plate 32 from detaching from the landing gear 51 due to excessive centrifugal force.

[0021] In this application, the preferred solution is that the rice crust is discharged from the upstream end of the conveyor chain 23. At this time, under the action of the constraint guide rod 52, the movable heating plate 32 and the fixed heating plate 31 are in a closed state at the downstream end of the conveyor chain 23, and are moved to the lower chain segment of the conveyor chain 23 while maintaining the closed state. The oven 60 can continue to heat the movable heating plate 32 and the fixed heating plate 31 on the lower chain segment of the conveyor chain 23. This can reduce the length of the conveyor chain 23, reduce the equipment footprint, and achieve full baking of the rice crust raw material.

[0022] Furthermore, a scraping mechanism 70 is provided at the upstream or downstream end of the conveyor chain 23. The scraping mechanism 70 includes a scraper 71 rotatably mounted above the fixed heating plate 31. The length direction of the scraper 71 is consistent with the length direction of the fixed heating plate 31. A drive motor 72 is installed on the frame 10 on the right side of the conveyor chain 23. The right side of the scraper 71 is connected to the output shaft of the drive motor 72, and the drive motor 72 drives the scraper 71 to rotate. When the movable heating plate 32 located at the upstream or downstream end of the conveyor chain 23 is separated from the fixed heating plate 31 at an angle, the rice crust between the movable heating plate 32 and the fixed heating plate 31 may not fall off normally. At this time, external intervention is required. The specific solution is that the drive motor 72 drives the scraper 71 to rotate, and the scraper 71 scrapes off the rice crust on the surface of the fixed heating plate 31, thereby preventing the rice crust from sticking to the fixed heating plate 31 for a long time and undergoing multiple baking processes, thus ensuring the quality of the rice crust.

[0023] In the above, the feeding mechanism 40 includes a discharge pipe 42 connected to the lower part of the storage box 41, the other end of the discharge pipe 42 is connected to a first distribution pipe 43, and the two ends of the first distribution pipe 43 are respectively connected to second distribution pipes 44, each of the two second distribution pipes 44 having two discharge ends; a screw conveyor 48 for feeding the rice crust raw material into the discharge pipe 42 is provided at the lower part of the storage box 41; a mounting frame 45 is provided on the pipe wall of the first distribution pipe 43, and a vertically arranged first cylinder 46 is mounted on the mounting frame 45. The piston rod end of the first cylinder 46 is connected to a cutting plate 47, and the plate surface of the cutting plate 47 coincides with the end face of the discharge end of the two second distribution pipes 44. The cutting plate 47 is driven to slide along the end face of the discharge end of the second distribution pipe 44 and cut the rice crust raw material. During operation, the rice crust raw material in the storage box 41 is squeezed out from the discharge pipe 42, the first distribution pipe 43 and the second distribution pipe 44 in sequence under the action of the screw conveyor 48. In order to facilitate the smooth fall of the squeezed rice crust raw material, the cutting plate 47 can be driven to move by the first cylinder 46. On the one hand, the rice crust raw material is cut at the discharge end of the second discharge pipe 44, which is conducive to the smooth fall of the rice crust raw material onto the corresponding fixed heating plate 31. On the other hand, it can ensure that the rice crust raw material falling from the discharge end of the second discharge pipe 44 is approximately equal, so that the size of the formed rice crust is basically the same.

[0024] Furthermore, a compaction mechanism 80 is provided above the conveyor chain 23 between the downstream of the landing gear 51 and the oven 60. The compaction mechanism 80 includes a lower pressure roller 81 rotatably mounted on the frame 10 and a second cylinder 82 that drives the lower pressure roller 81 to swing downward. Specifically, a lower pressure roller mounting frame is rotatably connected to the frame 10. A torsion spring is connected to the rotating shaft of the lower pressure roller mounting frame to drive the rotating shaft back to its initial state. The lower pressure roller 81 is rotatably connected to the lower pressure roller mounting frame. When the piston rod of the second cylinder 82 presses the lower pressure roller 81, the lower pressure roller 81 will swing downward and apply pressure to the movable heating plate 32. When the piston rod of the second cylinder 82 retracts upward, the lower pressure roller 81 will retract upward to its initial position under the action of the torsion spring.

[0025] Furthermore, a receiving box 90 for receiving rice crusts is provided below the upstream or downstream end of the conveyor chain 23. The receiving box 90 is movable and placed below the upstream or downstream end of the conveyor chain 23, and can be replaced after receiving a certain amount of rice crusts. It should be noted that the receiving box 90, the lifting frame 51, and the scraping mechanism 70 are centrally arranged at the upstream end of the conveyor chain 23 where the front sprocket shaft 21 is located, which facilitates centralized management by maintenance personnel. The movable heating plate 32 and the fixed heating plate 31 are in a separated state within the chain segment between the front sprocket shaft 21 and the end of the lifting frame 51. In other stroke segments, the movable heating plate 32 and the fixed heating plate 31 are in a close state, which reduces the heat dissipation time when the movable heating plate 32 and the fixed heating plate 31 are in a separated state, while ensuring effective baking time under the limited length of the oven 60, and significantly improving energy utilization.

[0026] A circular roller 321 is connected to the right side edge of the movable heating plate 32. The circular roller 321 rolls along the landing gear 51. The circular roller 321 of the movable heating plate 32 moves along the landing gear 51, which on the one hand ensures that the movable heating plate 32 can be raised and lowered smoothly, and on the other hand reduces the friction between the two.

Claims

1. A rice crust forming device, characterized in that: The frame (10) is provided with a front sprocket shaft (21) and a rear sprocket shaft (22) with the shaft cores arranged horizontally and in parallel. The front sprocket shaft (21) is connected to the left and right ends of the front sprocket shaft (211), and the rear sprocket shaft (22) is connected to the left and right ends of the rear sprocket shaft (221). The left and right conveyor chains (23) are respectively wound and meshed on the front sprocket (211) and the rear sprocket (221) at the left and right ends. The left and right sides of the fixed heating plate (31) are respectively fixed to the left and right conveyor chains (23). The left side of the movable heating plate (32) is hinged to the left side of the fixed heating plate (31). The movable heating plate (32) on the upper chain segment of the conveyor chain (23) is located above the fixed heating plate (31) which is flat on the plate surface. A landing gear (51) is provided on the right side of the upstream section of the conveyor chain (23) to guide the movable heating plate (32) to rise and fall. A feeding mechanism (40) for rice crust raw material is provided within the travel range of the conveyor chain (23) covered by the landing gear (51). The downstream section of the conveyor chain (23) is located in the oven (60). The heating unit in the oven (60) heats the fixed heating plate (31) and the movable heating plate (32). The movable heating plate (32) at the downstream or upstream end of the conveyor chain (23) is separated from the fixed heating plate (31) at an angle for the finished rice crust to fall. A constraint guide rod (52) is set on the side where the right conveyor chain (23) is located. The rod end of the constraint guide rod (52) at the downstream end of the right conveyor chain (23) surrounds the conveyor chain (23) and extends along the lower section of the conveyor chain (23) to the upstream end of the conveyor chain (23). The constraint guide rod (52) is connected to the upstream end of the landing gear (51).

2. The rice crust forming equipment according to claim 1, characterized in that: A scraping mechanism (70) is provided at the upstream or downstream end of the conveyor chain (23). The scraping mechanism (70) includes a scraper (71) rotatably mounted above the fixed heating plate (31). The length direction of the scraper (71) is consistent with the length direction of the fixed heating plate (31). A drive motor (72) is installed on the frame (10) on the right side of the conveyor chain (23). The right side of the scraper (71) is connected to the output shaft of the drive motor (72), and the drive motor (72) drives the scraper (71) to rotate.

3. The rice crust forming equipment according to claim 1, characterized in that: The feeding mechanism (40) includes a discharge pipe (42) connected to the lower part of the storage box (41), the other end of the discharge pipe (42) is connected to a first distribution pipe (43), and the two ends of the first distribution pipe (43) are respectively connected to second distribution pipes (44), and each of the two second distribution pipes (44) is provided with two discharge ends; a screw conveyor (48) for feeding the rice crust raw material into the discharge pipe (42) is provided at the lower part of the storage box (41).

4. The rice crust forming equipment according to claim 3, characterized in that: A mounting bracket (45) is provided on the wall of the first distribution pipe (43). A vertically arranged first cylinder (46) is installed on the mounting bracket (45). The piston rod end of the first cylinder (46) is connected to a cutting plate (47). The surface of the cutting plate (47) coincides with the end face of the discharge end of the two second distribution pipes (44). The first cylinder (46) drives the cutting plate (47) to slide along the end face of the discharge end of the second distribution pipe (44) and cut the rice crust raw material.

5. The rice crust forming equipment according to claim 1, characterized in that: A compaction mechanism (80) is provided above the conveyor chain (23) between the downstream of the landing gear (51) and the oven (60). The compaction mechanism (80) includes a lower pressure roller (81) rotatably mounted on the frame (10) and a second cylinder (82) that drives the lower pressure roller (81) to swing downward.

6. The rice crust forming equipment according to claim 1, characterized in that: A receiving box (90) for receiving rice crusts is provided below the upstream or downstream end of the conveyor chain (23).

7. The rice crust forming equipment according to claim 1, characterized in that: A circular roller (321) is connected to the right side of the movable heating plate (32), and the circular roller (321) rolls along the landing gear (51).

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