A raw material sterilization device and production process for preparing fructose syrup

Abstract

The present invention relates to the technical field of fructose syrup preparation. The present invention discloses a raw material sterilization device and a production process for fructose syrup preparation, including an outer box. A stirring mechanism is fixed on the top of the sterilization box. The stirring mechanism includes a motor, the bottom of the motor is connected to a gear, one side of the gear is meshed with a rotating pipe, stirring blades are fixed on the outer side of the rotating pipe, the rotating pipe extends into the inner box, and a stirring rod is fixed on the outer side of the bottom of the rotating pipe. For this raw material sterilization device for fructose syrup preparation, after sealing the liquid extraction hole and passing the sterilized raw material in the sterilization box between the outer box and the inner box, unsterilized raw material is introduced into the inner box. During the process of the high-temperature raw material flowing in the heat conduction pipe, heat exchange can be realized, which is convenient for preheating the raw material in the inner box. Then, the raw material in the inner box is pumped into the sterilization box for thorough high-temperature sterilization treatment. The whole sterilization operation is continuous, efficient and energy-saving.

Description

Technical Field

[0001] The present invention relates to the technical field of fructose syrup preparation, and specifically to a raw material sterilization device and production process for fructose syrup preparation. Background Art

[0002] Fructose syrup is a starch sugar crystal made by hydrolyzing and isomerizing plant starch. It is an important sweetener. The production of fructose syrup is not restricted by regions and seasons, the equipment is relatively simple, and the investment cost is relatively low. Because its composition is mainly fructose and glucose, it is called "fructose syrup". In the process of producing and preparing fructose syrup, a raw material sterilization device is required.

[0003] After the existing raw material sterilization device sterilizes the raw materials at high temperature, it generally needs to perform natural cooling treatment on the raw materials. The heat of the raw materials is easily wasted and difficult to make full use of. Moreover, only after the sterilization treatment of the previous batch of raw materials can the next batch of raw materials be sterilized, and there is a waiting time for loading and unloading, making the entire sterilization operation not continuous and efficient enough. In view of the above problems, it is necessary to improve the existing equipment. Summary of the Invention

[0004] The purpose of the present invention is to provide a raw material sterilization device and production process for fructose syrup preparation, so as to solve the problems in the above background art that after the existing raw material sterilization device sterilizes the raw materials at high temperature, it generally needs to perform natural cooling treatment on the raw materials, the heat of the raw materials is easily wasted and difficult to make full use of, and only after the sterilization treatment of the previous batch of raw materials can the next batch of raw materials be sterilized, and there is a waiting time for loading and unloading, making the entire sterilization operation not continuous and efficient enough.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A raw material sterilization device and production process for fructose syrup preparation, including an outer box, a support and a first electric discharge valve are fixed at the bottom of the outer box, an inner box is fixed inside the outer box, a feed pipe is fixed at the top of the inner box, the feed pipe penetrates through the top of the outer box, a heat conduction pipe is fixed on the inner box, and the heat conduction pipe penetrates through the inner box.

[0006] A sterilization box is fixed at the top of the outer box, the bottom of the sterilization box is connected to the top of the outer box through a second electric discharge valve, and electric heating plates are symmetrically fixed on both sides of the inner bottom of the sterilization box.

[0007] A stirring mechanism is fixed at the top of the sterilization box. The stirring mechanism includes a motor, the bottom of the motor is connected to a gear, one side of the gear is meshed with a rotating pipe, stirring blades are fixed on the outer side of the rotating pipe, the rotating pipe extends into the inner box, and a stirring rod is fixed on the outer side of the bottom of the rotating pipe.

[0008] Preferably, a feed inlet is formed in the top of the sterilization box, and a flip cover is rotatably connected to the top of the sterilization box.

[0009] Preferably, a gear ring is fixed to the outer side of the rotating pipe, and the gear ring is meshed and connected to one side of the gear.

[0010] Preferably, the top of the rotating pipe is connected to a liquid pump through a liquid extraction pipe, and the liquid pump is fixed to the top of the sterilization box. A reflux pipe is fixed to the top of the liquid pump, and the end of the reflux pipe extends into the sterilization box.

[0011] Preferably, the stirring blades are of a porous structure, and the stirring blades and the stirring rods are circumferentially and evenly distributed on the rotating pipe.

[0012] Preferably, liquid extraction holes are formed in the side surface of the rotating pipe, and the liquid extraction holes communicate with the sterilization box. There are four liquid extraction holes, and the four liquid extraction holes are circumferentially and evenly distributed on the rotating pipe.

[0013] Preferably, an electric telescopic column and a first oil cylinder are fixed to the bottom of the outer box, and a first piston is fixed to the top of the electric telescopic column. The first piston is slidably connected in the first oil cylinder, and the first piston penetrates through the bottom of the outer box and the bottom of the inner box and is connected to a first sealing ring. The first sealing ring is slidably connected to the outer side of the bottom of the rotating pipe.

[0014] Preferably, a second oil cylinder is fixed to the bottom of the sterilization box, and the second oil cylinder is connected to the first oil cylinder through a connecting pipe. A second piston is slidably connected in the second oil cylinder, and a second sealing ring is fixed to the top of the second piston. The second sealing ring is slidably connected to the outer side of the rotating pipe.

[0015] Preferably, an extrusion ring is fixed to the outer side of the rotating pipe, and the extrusion ring is located between the outer box and the inner box. A movable frame penetrates through the side surface of the outer box, and the movable frame is connected to the outer box through a tension spring. One end of the movable frame is attached to the outer side of the extrusion ring, and the other end of the movable frame penetrates through the side surface of the inner box and is connected to a movable plate. Through holes are formed in the movable plate, and an opening and closing member is rotatably connected in the through holes. The opening and closing member is connected to the movable plate through a scroll spring.

[0016] A production process for raw materials used in the preparation of fructose syrup includes the following steps:

[0017] S1. Feed the raw materials into the sterilization box, and the electric heating plate performs high-temperature sterilization treatment on the raw materials. While the first sealing ring moves downward to seal the bottom of the rotating pipe, the second sealing ring moves upward to open the liquid extraction holes, and the stirring rods rotate together with the rotating pipe to stir the raw materials. At the same time, the raw materials roll up and down in the sterilization box, facilitating full and uniform sterilization;

[0018] S2. Feed the unsterilized raw materials into the inner box. After completing the sterilization operation, open the second electric discharge valve to send the sterilized raw materials between the outer box and the inner box. The high-temperature raw materials flow in the heat conduction pipeline for heat exchange. At the same time, the extrusion ring rotates to drive the movable frame and the movable plate to move back and forth, the opening and closing member opens and closes repeatedly, and the stirring rod stirs the raw materials to facilitate full heat exchange. When the first sealing ring moves upward to open the bottom of the rotating pipeline, the second sealing ring moves downward to seal the liquid extraction hole, and then the raw materials in the inner box are pumped into the sterilization box for high-temperature sterilization. Open the first electric discharge valve to discharge the raw materials between the outer box and the inner box;

[0019] S3. Repeat the above operations to continuously and efficiently sterilize the raw materials.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. The raw material sterilization device for preparing fructose syrup can achieve the purpose of fully and evenly sterilizing. After the initial raw materials are fed into the sterilization box, the electric heating plate performs high-temperature sterilization on the raw materials. After opening the liquid extraction hole, the raw materials at the bottom of the sterilization box can be pumped to the top of the sterilization box by using the rotating pipeline, the liquid extraction pipeline and the reflux pipeline. The raw materials tumble up and down in the sterilization box, and at the same time, the stirring blades rotate to stir the raw materials, making the sterilization effect more sufficient and uniform;

[0022] 2. The raw material sterilization device for preparing fructose syrup can achieve the purpose of continuous energy-saving sterilization through heat exchange. After sealing the liquid extraction hole and sending the sterilized raw materials in the sterilization box between the outer box and the inner box, unsterilized raw materials are fed into the inner box. During the process of the high-temperature raw materials flowing in the heat conduction pipeline, heat exchange can be realized, which is convenient for preheating the raw materials in the inner box. Then, the raw materials in the inner box are pumped into the sterilization box for thorough high-temperature sterilization treatment. The whole sterilization operation is continuous, efficient and energy-saving;

[0023] 3. The raw material sterilization device for preparing fructose syrup can achieve the purpose of full heat exchange. During the heat exchange process, the stirring rod rotates, which is convenient for stirring the raw materials in the inner box. At the same time, the extrusion ring rotates, the movable frame and the movable plate move back and forth, and the opening and closing member opens and closes repeatedly, which is convenient for assisting the liquid in the inner box to tumble, making the heat exchange effect more sufficient and uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0025] Figure 2 It is a front sectional structural schematic diagram of the present invention;

[0026] Figure 3 It is a right view structural schematic diagram of the present invention;

[0027] Figure 4Schematic front sectional view of the stirring mechanism of the present invention;

[0028] Figure 5 Schematic partial three-dimensional structure view of the stirring mechanism of the present invention;

[0029] Figure 6 For the present invention Figure 4 Enlarged structure view at position A in

[0030] Figure 7 For the present invention Figure 4 Enlarged structure view at position B in

[0031] In the figure: 1. Outer box; 2. Bracket; 3. First electric discharge valve; 4. Inner box; 5. Feed pipeline; 6. Heat conduction pipeline; 7. Sterilization box; 8. Second electric discharge valve; 9. Feed inlet; 10. Flap; 11. Electric heating plate; 12. Stirring mechanism; 1201. Motor; 1202. Gear; 1203. Rotating pipeline; 1204. Tooth ring; 1205. Liquid extraction pipeline; 1206. Liquid pump; 1207. Return pipeline; 1208. Stirring blade; 1209. Liquid extraction hole; 1210. Extrusion ring; 1211. Stirring rod; 1212. Electric telescopic column; 1213. First oil cylinder; 1214. First piston; 1215. First sealing ring; 1216. Connecting pipeline; 1217. Second oil cylinder; 1218. Second piston; 1219. Second sealing ring; 1220. Movable frame; 1221. Tensile spring; 1222. Movable plate; 1223. Through hole; 1224. Opening and closing member; 1225. Volute spring. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1 - 7 , the present invention provides a technical solution: a raw material sterilization device for preparing fructose syrup, including an outer box 1, a bracket 2 and a first electric discharge valve 3 are fixed at the bottom of the outer box 1, an inner box 4 is fixed inside the outer box 1, a feed pipeline 5 is fixed at the top of the inner box 4, the feed pipeline 5 penetrates through the top of the outer box 1, a heat conduction pipeline 6 is fixed on the inner box 4, and the heat conduction pipeline 6 penetrates through the inner box 4.

[0034] A sterilization box 7 is fixed at the top of the outer box 1, the bottom of the sterilization box 7 is connected to the top of the outer box 1 through a second electric discharge valve 8, and electric heating plates 11 are symmetrically fixed on both sides of the inner bottom of the sterilization box 7.

[0035] A stirring mechanism 12 is fixed to the top of the sterilization box 7. The stirring mechanism 12 includes a motor 1201. The bottom of the motor 1201 is connected to a gear 1202. One side of the gear 1202 is meshed with a rotating pipe 1203. Stirring blades 1208 are fixed to the outer side of the rotating pipe 1203. The rotating pipe 1203 extends into the inner box 4. Stirring rods 1211 are fixed to the outer side of the bottom of the rotating pipe 1203.

[0036] In this embodiment, as Figure 2 shown, a feed inlet 9 is formed in the top of the sterilization box 7, and a flip cover 10 is rotatably connected to the top of the sterilization box 7. After the flip cover 10 is opened, raw materials can be passed through the feed inlet 9 into the sterilization box 7 for high-temperature sterilization treatment.

[0037] In this embodiment, as Figure 2 、 Figure 4 and Figure 5 shown, a gear ring 1204 is fixed to the outer side of the rotating pipe 1203, and the gear ring 1204 is meshed with one side of the gear 1202. The gear 1202 can rotate under the action of the motor 1201. Since the gear ring 1204 is meshed with the gear 1202, the rotating pipe 1203 will rotate with the rotation of the gear 1202.

[0038] In this embodiment, as Figure 1 、 Figure 2 、 Figure 3 and Figure 4 shown, the top of the rotating pipe 1203 is connected to a liquid pump 1206 through a liquid suction pipe 1205, and the liquid pump 1206 is fixed to the top of the sterilization box 7. A return pipe 1207 is fixed to the top of the liquid pump 1206, and the end of the return pipe 1207 extends into the sterilization box 7. The liquid pump 1206 can pump liquid upward. The liquid in the sterilization box 7 flows back into the sterilization box 7 through the rotating pipe 1203, the liquid suction pipe 1205 and the return pipe 1207, and the liquid tumbles up and down in the sterilization box 7, making the heating and sterilization effect more uniform and efficient.

[0039] In this embodiment, as Figure 2 、 Figure 4 and Figure 5 shown, the stirring blades 1208 are of a porous structure, and both the stirring blades 1208 and the stirring rods 1211 are circumferentially and evenly distributed on the rotating pipe 1203. During the process of high-temperature sterilization treatment of the liquid in the sterilization box 7, the stirring blades 1208 and the stirring rods 1211 rotate together with the rotating pipe 1203. The stirring blades 1208 play a role in stirring the liquid in the sterilization box 7, making the sterilization effect more comprehensive and uniform, and the stirring rods 1211 play a role in stirring the liquid in the inner box 4.

[0040] In this embodiment, as Figure 2, Figure 4 , Figure 5 and Figure 6 As shown in Figure 4 , Figure 5 , and Figure 6 , liquid extraction holes 1209 are formed on the side surface of the rotating pipe 1203, and the liquid extraction holes 1209 communicate with the sterilization tank 7. There are four liquid extraction holes 1209, and the four liquid extraction holes 1209 are circumferentially and uniformly distributed on the rotating pipe 1203. Before performing high-temperature sterilization treatment on the liquid in the sterilization tank 7, the liquid extraction holes 1209 need to be opened. During the process of pumping liquid by the liquid pump 1206, the liquid at the bottom of the sterilization tank 7 enters the rotating pipe 1203 through the liquid extraction holes 1209, and then the liquid flows back to the top of the sterilization tank 7 through the liquid extraction pipe 1205 and the return pipe 1207, enabling the liquid to roll up and down in the sterilization tank 7.

[0041] In this embodiment, as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in Figure 1 , Figure 2 , Figure 3 , and Figure 4 , an electric telescopic column 1212 and a first oil cylinder 1213 are fixed to the bottom of the outer box 1. The top of the electric telescopic column 1212 is fixed with a first piston 1214. The first piston 1214 is slidably connected inside the first oil cylinder 1213, and the first piston 1214 penetrates through the bottom of the outer box 1 and the bottom of the inner box 4 and is connected to a first sealing ring 1215. The first sealing ring 1215 is slidably connected to the outside of the bottom of the rotating pipe 1203. The first piston 1214 can move up and down under the telescopic action of the electric telescopic column 1212, and the first sealing ring 1215 moves up and down accordingly, facilitating the control of the opening and closing of the bottom of the rotating pipe 1203.

[0042] In this embodiment, as Figure 2 , Figure 4 and Figure 6 As shown in Figure 2 , Figure 4 , and Figure 6 , a second oil cylinder 1217 is fixed to the bottom of the sterilization tank 7, and the second oil cylinder 1217 is connected to the first oil cylinder 1213 through a connecting pipe 1216. A second piston 1218 is slidably connected inside the second oil cylinder 1217, and the top of the second piston 1218 is fixed with a second sealing ring 1219. The second sealing ring 1219 is slidably connected to the outside of the rotating pipe 1203. The connecting pipe 1216 serves to connect the first oil cylinder 1213 and the second oil cylinder 1217. When the first piston 1214 moves downward, the liquid in the first oil cylinder 1213 can be pressed into the second oil cylinder 1217. The second piston 1218 moves upward under the action of the oil pressure, thereby driving the second sealing ring 1219 to move upward, facilitating the opening of the liquid extraction holes 1209. When the first piston 1214 moves upward, the second sealing ring 1219 moves downward and seals the liquid extraction holes 1209.

[0043] In this embodiment, as Figure 2 , Figure 4 , Figure 5 and Figure 7As shown in the figure, an extrusion ring 1210 is fixed to the outer side of the rotating pipe 1203, and the extrusion ring 1210 is located between the outer box 1 and the inner box 4. A movable frame 1220 penetrates through the side surface of the outer box 1, and the movable frame 1220 is connected to the outer box 1 through a tension spring 1221. One end of the movable frame 1220 is in contact with the outer side of the extrusion ring 1210, and the other end of the movable frame 1220 penetrates through the side surface of the inner box 4 and is connected to a movable plate 1222. Through holes 1223 are formed in the movable plate 1222, and an opening and closing member 1224 is rotatably connected in the through holes 1223. The opening and closing member 1224 is connected to the movable plate 1222 through a volute spring 1225. The rotation of the rotating pipe 1203 drives the extrusion ring 1210 to rotate, and the movable frame 1220 moves back and forth under the extrusion of the extrusion ring 1210 and the pulling of the tension spring 1221, thereby driving the movable plate 1222 to move back and forth, and the opening and closing member 1224 repeatedly opens and closes, facilitating the rolling of the liquid in the inner box 4.

[0044] According to another aspect of the present invention, a raw material production process for the preparation of fructose syrup is provided, including the following steps:

[0045] S1. The raw materials are sent into the sterilization box 7, the electric heating plate 11 performs high-temperature sterilization treatment on the raw materials. While the first sealing ring 1215 moves downward to seal the bottom of the rotating pipe 1203, the second sealing ring 1219 moves upward to open the liquid extraction hole 1209, and the stirring rod 1211 rotates together with the rotating pipe 1203 to stir the raw materials. At the same time, the raw materials roll up and down in the sterilization box 7, facilitating full and uniform sterilization.

[0046] S2. Unsterilized raw materials are introduced into the inner box 4. After the sterilization operation is completed, the second electric discharge valve 8 is opened to send the sterilized raw materials between the outer box 1 and the inner box 4. The high-temperature raw materials flow in the heat conduction pipe 6 for heat exchange. At the same time, the rotation of the extrusion ring 1210 drives the movable frame 1220 and the movable plate 1222 to move back and forth, the opening and closing member 1224 repeatedly opens and closes, and the stirring rod 1211 stirs the raw materials, facilitating full heat exchange. While the first sealing ring 1215 moves upward to open the bottom of the rotating pipe 1203, the second sealing ring 1219 moves downward to seal the liquid extraction hole 1209, and then the raw materials in the inner box 4 are pumped into the sterilization box 7 for high-temperature sterilization, and the first electric discharge valve 3 is opened to discharge the raw materials between the outer box 1 and the inner box 4.

[0047] S3. Repeat the above operations to continuously and efficiently sterilize the raw materials.

[0048] The working principle of this device is as follows: Connect to an external power supply. First, open the flip cover 10 and feed the raw materials into the sterilization box 7. The electric heating plate 11 performs high-temperature sterilization treatment on the raw materials. The first piston 1214 and the first sealing ring 1215 move downward, and the first sealing ring 1215 seals the bottom of the rotating pipe 1203. The second piston 1218 and the second sealing ring 1219 move upward to open the liquid extraction hole 1209. The liquid pump 1206 pumps the raw materials upward. The raw materials enter the rotating pipe 1203 through the liquid extraction hole 1209 and flow back to the sterilization box 7 through the liquid extraction pipe 1205 and the reflux pipe 1207. The raw materials tumble up and down in the sterilization box 7. At the same time, the gear 1202 rotates to drive the rotation of the rotating pipe 1203 and the stirring blade 1208, thereby automatically stirring the raw materials, facilitating the full and uniform sterilization treatment of the raw materials. After completing the sterilization operation, the first sealing ring 1215 moves upward to open the bottom of the rotating pipe 1203. At the same time, the second sealing ring 1219 moves downward to seal the liquid extraction hole 1209. Then, open the second electric discharge valve 8 to feed the sterilized raw materials between the outer box 1 and the inner box 4. Use the feeding pipe 5 to feed the unsterilized raw materials into the inner box 4. The sterilized raw materials flow between the outer box 1 and the inner box 4 and in the heat conduction pipe 6 to perform heat exchange, so that the raw materials in the inner box 4 are preheated, and at the same time, the raw materials between the outer box 1 and the inner box 4 are cooled. Then, use the liquid pump 1206 to pump the raw materials in the inner box 4 into the sterilization box 7 for heating and sterilization treatment. Open the first electric discharge valve 3 to drain the liquid between the outer box 1 and the inner box 4. Then repeat the above operations. During the heat exchange process, the extrusion ring 1210 and the stirring rod 1211 rotate together with the rotating pipe 1203, the movable frame 1220 and the movable plate 1222 move back and forth, and the opening and closing member 1224 repeatedly opens and closes, facilitating the tumbling of the raw materials in the inner box 4, making the heat exchange effect more sufficient. And the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0049] In summary, the raw material sterilization device and production process for preparing fructose syrup achieve the purposes of full and uniform sterilization, continuous energy-saving sterilization through heat exchange, and sufficient heat exchange, meeting the usage requirements of people.

[0050] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A raw material sterilization device for preparing fructose syrup, comprising an outer box (1) and a rotating pipeline (1203), characterized in that: A bracket (2) and a first electric discharge valve (3) are fixed to the bottom of the outer box (1). An inner box (4) is fixed to the inner side of the outer box (1). A feed pipe (5) is fixed to the top of the inner box (4). The feed pipe (5) penetrates through the top of the outer box (1). A heat conduction pipe (6) is fixed to the inner box (4), and the heat conduction pipe (6) penetrates through the inner box (4). A sterilization box (7) is fixed to the top of the outer box (1). The bottom of the sterilization box (7) is connected to the top of the outer box (1) through a second electric discharge valve (8). Electric heating plates (11) are symmetrically fixed to both sides of the inner bottom of the sterilization box (7). A cross-shaped extrusion ring (1210) is fixed to the outer side of the rotating pipe (1203), and the cross-shaped extrusion ring (1210) is located between the outer box (1) and the inner box (4). A movable frame (1220) penetrates through the side of the outer box (1), and the movable frame (1220) is connected to the outer box (1) through a tension spring (1221). One end of the movable frame (1220) is in contact with the outer side of the cross-shaped extrusion ring (1210), and the other end of the movable frame (1220) penetrates through the side of the inner box (4) and is connected to a movable plate (1222). Through holes (1223) are formed in the movable plate (1222), and a closing member (1224) is rotatably connected in the through holes (1223). The closing member (1224) is connected to the movable plate (1222) through a scroll spring (1225). A stirring mechanism (12) is fixed to the top of the sterilization box (7). The stirring mechanism (12) includes a motor (1201). The bottom of the motor (1201) is connected to a gear (1202). One side of the gear (1202) is meshed with a rotating pipe (1203). Stirring blades (1208) are fixed to the outer side of the rotating pipe (1203). The rotating pipe (1203) extends into the inner box (4). Stirring rods (1211) are fixed to the outer side of the bottom of the rotating pipe (1203).

2. The raw material sterilization device for preparing fructose syrup according to claim 1, characterized in that: A feed inlet (9) is formed in the top of the sterilization box (7), and a flip cover (10) is rotatably connected to the top of the sterilization box (7).

3. A raw material sterilization device for preparing fructose syrup according to claim 1, characterized in that: A gear ring (1204) is fixed to the outer side of the rotating pipe (1203), and the gear ring (1204) is meshed with one side of the gear (1202).

4. The raw material sterilization device for preparing fructose syrup according to claim 1, characterized in that: The top of the rotating pipe (1203) is connected to a liquid pump (1206) through a liquid extraction pipe (1205), and the liquid pump (1206) is fixed to the top of the sterilization box (7). A return pipe (1207) is fixed to the top of the liquid pump (1206), and the end of the return pipe (1207) extends into the sterilization box (7).

5. A raw material sterilization device for preparing fructose syrup according to claim 1, characterized in that: The stirring blades (1208) are of a porous structure, and the stirring blades (1208) and the stirring rods (1211) are both circumferentially and evenly distributed on the rotating pipe (1203).

6. The raw material sterilization device for preparing fructose syrup according to claim 1, characterized in that: The side of the rotating pipe (1203) is provided with liquid extraction holes (1209), and the liquid extraction holes (1209) communicate with the sterilization tank (7). Four liquid extraction holes (1209) are provided, and the four liquid extraction holes (1209) are circumferentially and evenly distributed on the rotating pipe (1203).

7. A raw material sterilization device for preparing fructose-glucose syrup according to claim 1, characterized in that: An electric telescopic column (1212) and a first oil cylinder (1213) are fixed to the bottom of the outer box (1). The top of the electric telescopic column (1212) is fixed with a first piston (1214). The first piston (1214) is slidably connected in the first oil cylinder (1213), and the first piston (1214) penetrates the bottom of the outer box (1) and the bottom of the inner box (4) and is connected to a first sealing ring (1215). The first sealing ring (1215) is slidably connected to the outside of the bottom of the rotating pipe (1203).

8. The raw material sterilization device for preparing fructose syrup according to claim 1, characterized in that: A second oil cylinder (1217) is fixed to the bottom of the sterilization tank (7), and the second oil cylinder (1217) is connected to the first oil cylinder (1213) through a connecting pipe (1216). A second piston (1218) is slidably connected in the second oil cylinder (1217), and the top of the second piston (1218) is fixed with a second sealing ring (1219). The second sealing ring (1219) is slidably connected to the outside of the rotating pipe (1203).

9. A production process of raw materials for preparing fructose syrup, which is applied to a sterilization device for raw materials for preparing fructose syrup according to any one of claims 1-8, characterized in that, Comprising the following steps: S1. Feed the raw materials into the sterilization tank (7). The electric heating plate (11) performs high-temperature sterilization on the raw materials. While the first sealing ring (1215) moves down to seal the bottom of the rotating pipe (1203), the second sealing ring (1219) moves up to open the liquid extraction holes (1209). The stirring rod (1211) rotates together with the rotating pipe (1203) to stir the raw materials. At the same time, the raw materials tumble up and down in the sterilization tank (7) to facilitate full and uniform sterilization; S2. Feed the unsterilized raw materials into the inner box (4). After the sterilization operation is completed, open the second electric discharge valve (8) to feed the sterilized raw materials between the outer box (1) and the inner box (4). The high-temperature raw materials flow in the heat conduction pipe (6) for heat exchange. At the same time, the cross-shaped extrusion ring (1210) rotates to drive the movable frame (1220) and the movable plate (1222) to move back and forth, the opening and closing member (1224) repeatedly opens and closes, and the stirring rod (1211) stirs the raw materials to facilitate full heat exchange. While the first sealing ring (1215) moves up to open the bottom of the rotating pipe (1203), the second sealing ring (1219) moves down to seal the liquid extraction holes (1209). Then, pump the raw materials in the inner box (4) into the sterilization tank (7) for high-temperature sterilization, and open the first electric discharge valve (3) to discharge the raw materials between the outer box (1) and the inner box (4); S3. Repeat the above operations to continuously and efficiently sterilize the raw materials.

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