Conveyor belt type pressure pulsation steam blanching equipment

Abstract

The utility model discloses conveying belt type pressure pulsation steam blanching equipment which comprises a blanching box body, a steam system, a vacuum system, a material conveying system and a sealing system, the blanching box body is used for loading materials when the materials are subjected to steam blanching; the steam system is used for generating and conveying steam when the materials are subjected to steam blanching; the vacuum system is used for vacuumizing the blanching box body before steam blanching; the material conveying system is used for conveying materials to the blanching box body during steam pulse blanching; the sealing system is used for keeping the vacuum environment in the blanching box body after steam pulsation blanching vacuumizing. According to the utility model, the blanching speed of fruits and vegetables is effectively improved, and a good sterile vacuum material blanching environment is realized.

Description

Technical Field

[0001] This utility model belongs to the technical field of steam blanching equipment, specifically relating to a conveyor belt type pressure pulsating steam blanching equipment. Background Technology

[0002] my country has abundant fresh fruit and vegetable resources, but major fruit and vegetable producing areas generally face the embarrassing situation of difficulties in product storage and transportation, inability to store products in a timely manner, and serious waste. This not only affects farmers' income and enthusiasm for planting, but also reduces the international market competitiveness of the fruit and vegetable food industry.

[0003] Therefore, fruits and vegetables need to be processed. The fruit and vegetable processing industry is an industrial activity that processes fruits, vegetables, and other agricultural products using certain technical methods. Fruit and vegetable drying involves using specific techniques to remove most of the moisture from the product, ultimately preserving it in a low-moisture state.

[0004] However, agricultural products generally contain enzymes such as polyphenol oxidase, which are prone to enzymatic biochemical reactions during drying and processing, causing enzymatic browning of agricultural products and affecting their nutritional components and flavor.

[0005] Existing steam pulse blanching equipment is generally intermittent, with limited loading capacity, making it difficult to meet the needs of large-scale automated production. It also suffers from high energy consumption and low production efficiency. Utility Model Content

[0006] In order to overcome the problems existing in the prior art, the purpose of this utility model is to provide a conveyor belt type pressure pulsating steam blanching equipment, which uses high-temperature steam to blanch fruits and vegetables, soften or change the surface structure of fruits and vegetables, increase the speed of water migration during drying, effectively improve the blanching rate of fruits and vegetables, and achieve a good sterile vacuum material blanching environment, thereby obtaining high-quality dried fruit and vegetable products.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A conveyor belt type pressure pulsating steam scalding and bleaching equipment includes a scalding and bleaching chamber, a steam system, a vacuum system, a material conveying system, and a sealing system;

[0009] The blanching box is used to load materials (fruits and vegetables) during steam blanching.

[0010] The steam system is used for the generation and delivery of steam during the steam blanching of materials;

[0011] The vacuum system is used to evacuate the steam scalding box before steam scalding.

[0012] The material conveying system is used to convey materials to the blanching box during steam pulse blanching.

[0013] The sealing system is used to maintain the vacuum environment inside the scalding and bleaching chamber after the steam pulse scalding and bleaching process has been vacuumed.

[0014] The hot water rinsing box includes a tank body, with an adjustable hinge 11 connecting a head 12 to the front end of the tank body. An observation window 13 is installed on the head 12, and a handle 14 is installed on the observation window 13.

[0015] The tank is equipped with a magnetic clamping hinge 7. The top of the tank is connected to the conveying nozzle 4. The nozzle 4 is directly facing the horizontal conveyor belt located inside the tank. The nozzle 4 transports the material to the horizontal conveyor belt. A steam distributor 8 is installed inside the tank. The steam distributor 8 sprays steam to scald the material.

[0016] The steam system includes a water tank 1, which is connected to a steam generator 6 via a pipe. A flanged steam solenoid valve 5 is installed on the pipe. The steam generator 6 is connected to a steam distributor 8. Steam is evenly distributed in the tank through the pipe and the steam distributor 8.

[0017] The vacuum system includes a water ring vacuum pump 16, which is connected to the tank via a pipe and is connected to the water tank 1 via a heat exchanger 15.

[0018] The superheated steam is drawn out by the water ring vacuum pump 16 and then the heat is recovered after passing through the heat exchanger 15. The resulting water enters the water tank 1 to cool the water ring vacuum pump 16.

[0019] A sealing ring is installed on the outside of the tank to seal the tank. The water ring vacuum pump 16 is turned on to complete the vacuuming operation of the scalding chamber.

[0020] The material conveying system includes an inclined conveyor belt 2, with a conveying nozzle 4 at the end of the inclined conveyor belt 2. A rotary feeding valve 3 is installed between the inclined conveyor belt 2 and the conveying nozzle 4. Material is fed to the rotary feeding valve 3 and then conveyed to the conveying nozzle 4. The conveying nozzle 4 then transports the material to a horizontal conveyor belt 9 inside the tank.

[0021] The horizontal conveyor belt inside the tank adopts a double-layer conveyor belt roller conveyor device, using polytetrafluoroethylene mesh belt, ceramic bearings and nylon rollers.

[0022] The scalding tank is made of high-quality stainless steel, and the inner surface, door, and internal components of the tank must be smooth. Asbestos is used as insulation between the inner and outer layers. The adjustable hinge 11 is a heavy-duty adjustable hinge, with the shaft and mounting part forming a sliding guide rail connection in the vertical direction, allowing for vertical adjustment to ensure a good seal and overcome the poor sealing defects of existing vacuum chambers. The observation window 13 is made of polypropylene acrylic glass with an anti-fog coating to prevent fog accumulation from affecting visibility.

[0023] A steam distributor 8 is installed on the inner middle side wall of the tank. The steam generator 6 is connected to the steam distributor 8. The steam is evenly distributed in the scalding chamber by the steam distributor 8. After scalding is completed, the steam is drawn out of the scalding chamber by the water ring vacuum pump 16 to form a complete airflow circulation.

[0024] After the water ring vacuum pump 16 extracts the steam, the waste heat is recovered through the heat exchanger 15, and the generated water is returned to the water tank 1 to cool the water ring vacuum pump 16.

[0025] The inclined conveyor belt 2 has an inclination angle of 30 degrees to the ground. Baffles are set on both sides of the inclined conveyor belt 2 and a material receiving trough is set at the bottom to prevent material from falling out and being wasted. A tensioning device is set using the groove of the aluminum material and a pressure wheel axle is set to tension the conveyor belt and prevent it from running off-center.

[0026] The heat exchanger 15 is a shell-and-tube heat exchanger.

[0027] The beneficial effects of this utility model are:

[0028] 1. This equipment enables continuous operation of vacuum pulsed steam blanching. It avoids the problems of uneven blanching, large amounts of wastewater generation, and intermittent production requiring manual loading, which are common with traditional methods.

[0029] 2. This equipment uses vacuum pulsed steam blanching, which uses high-temperature steam to blanch fruits and vegetables. This can soften or change the surface structure of fruits and vegetables, increase the rate at which water migrates outward during drying, and effectively improve the blanching rate of fruits and vegetables.

[0030] 3. During the blanching process of this equipment, the steam outlet inside the tank adopts an airflow distribution device, so that each material is blanched evenly by steam, and the subsequent drying time is short and the quality is good.

[0031] 4. This equipment can create a good sterile vacuum blanching environment for materials, thereby obtaining high-quality dried products. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings.

[0034] like Figure 1 As shown, a conveyor belt type pressure pulsating steam scalding and bleaching equipment includes a scalding and bleaching chamber, a steam system, a vacuum system, a material conveying system, and a sealing system, wherein:

[0035] The blanching chamber includes a head 12 with a handle 14 and an observation window 13, which is connected to the tank body by an adjustable hinge 11. The bottom is supported by a magnetic clamping hinge 7. The material is transported by a horizontal conveyor belt inside the tank through a conveying nozzle 4. Steam is sprayed out by a steam distributor 8 to blanch the material.

[0036] The steam system includes a water tank 1 and a steam generator 6 to produce steam. When the flanged steam solenoid valve 5 is opened, the steam is evenly distributed in the tank through the pipeline and the steam distributor 8. Then, the superheated steam is extracted by the water ring vacuum pump 16 and the heat is recovered after passing through the heat exchanger 15. The generated water enters the water tank 1 to cool the water ring vacuum pump 16.

[0037] The vacuum system includes a water ring vacuum pump 16, which is connected to the tank via a pipe. The end cap 12 with a handle 14 and an observation window 13 is closed, the tank is sealed by a sealing ring, and the water ring vacuum pump 16 is turned on to complete the vacuuming operation of the scalding chamber.

[0038] The material conveying system includes an inclined conveyor belt 2 that transports materials to a rotary feed valve 3, which then conveys them to a conveying nozzle 4. The conveying nozzle 4 then transports the materials to a horizontal conveyor belt 9 inside the tank.

[0039] The sealing system includes a head 12 with a handle 14 and an observation window 13, which is connected to the tank body via an adjustable hinge 11, and a rotary feed valve 3 for conveying materials, which can feed materials in batches while ensuring the sealing requirements of the tank body.

[0040] The inclined conveyor system is designed with an inclination angle of 30 degrees between the inclined conveyor belt 2 and the ground. Baffles are added on both sides of the conveyor belt and a material receiving trough is set at the bottom to prevent material from falling out and being wasted. A tensioning device is set using the groove of the aluminum material and a pressure wheel axle is set to tension the conveyor belt and prevent it from running off-track.

[0041] The large clearance between the shell and tube sides of the shell-and-tube heat exchanger improves the pumping efficiency of the water ring vacuum pump 16. The heat exchanger 15 is connected to the water ring vacuum pump 16. Since the water ring vacuum pump 16 operates efficiently at room temperature, the heat exchanger 15 effectively reduces the temperature of the gas entering the water ring vacuum pump 16, thereby increasing the pumping rate.

[0042] This utility model also includes a gas-liquid separator. After water vapor enters the heat exchanger 15 and is cooled, some of it condenses into water droplets, some remains as water vapor, and some remains as gas. To prevent water from mixing with gas and entering the water ring vacuum pump 16, a gas-liquid separator is added between the water ring vacuum pump 16 and the heat exchanger 15 to realize a liquid separation device.

[0043] The working principle of this utility model:

[0044] 1. Preheating. First, open the three-way reversing valve and the water ring vacuum pump 16 to evacuate and remove residual air bubbles in the pipeline. Then, close the water ring vacuum pump 16 and the valve, open the steam generator 6 and the steam inlet solenoid valve 5, and supply superheated steam for preheating. After reaching the preheating temperature, close the steam inlet solenoid valve 5, open the water ring vacuum pump 16 and the climbing conveyor belt 2, and then evacuate again.

[0045] 2. Place the material. When the vacuum level reaches the set value, close the water ring vacuum pump 16 and the steam inlet valve 5. At the same time, the material is transported to the rotary feed valve 3 via the climbing conveyor belt 2. At this time, the rotary feed valve 3 at the material inlet automatically opens. The nozzle device 4 can automatically send the material to be vacuum-heated into the vacuum heat-heating chamber of the belt screw conveyor pressure pulsating steam heat-heating machine. It can also be horizontally transferred with the screw conveyor belt 9. A steam distributor 8 can be installed on the conveyor belt plate 9 to ensure uniform contact with the material during heat-heating.

[0046] 3. Blanching. When the continuous working time of the horizontal conveyor belt 9 exceeds the set value, or when the material is directly transported to the leftmost outlet of the blanching box, close the valve of the inner horizontal conveyor belt 9 or directly close the feed valve 3. At this time, preheating and vacuuming are completed; open the steam inlet valve 5 to enter the steam blanching stage, providing steam generated by the steam generator 5 for blanching. When the blanching time reaches the set value, close the steam inlet valve 5 to complete the high-temperature vacuum steam pulse blanching cycle. Depending on the material, the vacuum steam pulse blanching can be cycled a certain number of times.

[0047] 4. Waste Heat Recovery. During each vacuuming process, the steam after scalding enters the heat exchanger 15 through the vacuum pump. The waste heat is recovered through rapid heat exchange in the heat exchanger 15 and then enters the water tank 1. The recovered heat can be used to heat other areas that require heating to reduce processing energy consumption. The remaining hot water can be cooled in an external cooling tower and then returned to the water tank 1 to cool the vacuum pump 16, which can effectively slow down the temperature rise of the vacuum pump 16.

[0048] 5. Remove materials. After reaching the set number of cycles, move the horizontal conveyor belt 9 backward, transporting the blanched materials on the horizontal conveyor belt 9 onto the discharge valve 10. Then open the discharge valve 10 to achieve outer packaging through the finished product warehouse discharge port. After the materials in the internal conveyor belt 9 are discharged, close the discharge valve 10 to complete the entire vacuum steam pulse blanching process.

[0049] This invention is suitable for the pretreatment of fruits, vegetables and other crops before drying and processing.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate and not limit the technical solutions of this utility model. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the utility model without departing from the spirit and scope of the utility model. Any modifications or partial substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A conveyor belt type pressure pulsating steam blanching device, characterized in that, It includes the scalding chamber, steam system, vacuum system, material conveying system, and sealing system; The scalding box is used to load materials during the steam scalding process. The steam system is used for the generation and delivery of steam during the steam blanching of materials; The vacuum system is used to evacuate the steam scalding box before steam scalding. The material conveying system is used to convey materials to the blanching box during steam pulse blanching. The sealing system is used to maintain the vacuum environment inside the scalding and bleaching chamber after the steam pulse scalding and bleaching process has been vacuumed.

2. The conveyor belt type pressure pulsating steam scalding and blanching equipment according to claim 1, characterized in that, The hot water rinsing box includes a tank body, with an end cap (12) connected to the front end of the tank body via an adjustable hinge (11). An observation window (13) is installed on the end cap (12), and a handle (14) is installed on the observation window (13). A magnetic clamping hinge (7) is provided on the tank body. The top of the tank body is connected to a conveying nozzle (4). The nozzle (4) is directly facing the horizontal conveyor belt (9) located inside the tank body. The nozzle (4) transports the material to the horizontal conveyor belt. A steam distributor (8) is provided inside the tank body. The steam distributor (8) sprays steam to scald the material.

3. The conveyor belt type pressure pulsating steam scalding and blanching equipment according to claim 1, characterized in that, The steam system includes a water tank (1), which is connected to a steam generator (6) via a pipe. A flanged steam solenoid valve (5) is installed on the pipe. The steam generator (6) is connected to a steam distributor (8). The steam is evenly distributed in the tank through the pipe and the steam distributor (8).

4. The conveyor belt type pressure pulsating steam blanching equipment according to claim 3, characterized in that, The vacuum system includes a water ring vacuum pump (16), which is connected to the tank via a pipe and is connected to the water tank (1) via a heat exchanger (15). The superheated steam is drawn out by the water ring vacuum pump (16) and then the heat is recovered after passing through the heat exchanger (15). The generated water enters the water tank (1) to cool the water ring vacuum pump (16). A sealing ring is provided on the outside of the tank body to seal the tank body.

5. A conveyor belt type pressure pulsating steam blanching device according to claim 4, characterized in that, The material conveying system includes an inclined conveyor belt (2), a conveying nozzle (4) is provided at the end of the inclined conveyor belt (2), and a rotary feeding valve (3) is provided between the inclined conveyor belt (2) and the conveying nozzle (4).

6. A conveyor belt type pressure pulsating steam scalding and blanching device according to claim 5, characterized in that, The horizontal conveyor belt (9) inside the tank adopts a double-layer conveyor belt roller conveyor device.

7. A conveyor belt type pressure pulsating steam scalding and blanching device according to claim 5, characterized in that, A steam distributor (8) is provided on the inner middle side wall of the tank. The steam generator (6) is connected to the steam distributor (8). The steam is evenly distributed in the scalding chamber by the steam distributor (8). After the scalding is completed, it is drawn out of the scalding chamber by the water ring vacuum pump (16) to form a complete airflow circulation.

8. A conveyor belt type pressure pulsating steam blanching device according to claim 5, characterized in that, The inclined conveyor belt (2) is inclined at an angle of 30 degrees to the ground. Baffles are provided on both sides of the inclined conveyor belt (2), and a receiving trough is provided at the bottom.

9. A conveyor belt type pressure pulsating steam scalding and blanching device according to claim 4, characterized in that, The heat exchanger (15) is a shell-and-tube heat exchanger.

Images