Bitterness removing device for processing process of shaddap grapefruit peel

Abstract

The utility model discloses a kind of de-bittering devices of Wen Dan pear skin processing process, including rack, drum assembly, spraying system, ultrasonic generator, drive system and dehydration system;Drum assembly is installed on rack, drum assembly includes cylindrical drum, several water-permeable holes are equipped on drum cylinder wall, drum one end is equipped with feed inlet, the other end is equipped with discharge port, feed inlet and discharge port are equipped with sealing door;Spraying system includes hot water tank, water pump, spraying pipeline and spray head, dehydration system is used to drive drum high-speed rotation to realize pear skin dehydration, drain pipe is connected below drum.The device is treated by the combination mode of "spraying+ultrasonic wave", and the cavitation effect of ultrasonic wave can destroy the cell wall structure of Wen Dan pear skin, accelerate the dissolution of bitter substances into water. Compared with traditional brine soaking method, the de-bittering time is greatly shortened, the operation time is saved, and the overall processing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a debittering device for the processing of pomelo peel, belonging to the technical field of food processing equipment. Background Technology

[0002] Pomelo peel is rich in pectin, flavonoids, and other beneficial components, and has broad application prospects in food, health products, and daily chemical products. However, pomelo peel contains a large amount of bitter substances such as naringin, which can seriously affect the taste and quality of processed products. Therefore, debittering is a crucial step in the processing of pomelo peel.

[0003] Currently, the main methods used in the industry to remove bitterness from pomelo peels include traditional salt water soaking, acid-base treatment, and enzymatic hydrolysis. Among these, the traditional salt water soaking method involves immersing the pomelo peel in salt water for an extended period, allowing bitter substances to dissolve through osmotic pressure. While simple to operate, this method suffers from long debittering times and low efficiency. Furthermore, the salt water needs to be changed multiple times during the soaking process, consuming a large amount of water and making it difficult to ensure complete removal of bitter substances, resulting in inconsistent debittering effects.

[0004] The acid-base treatment method uses acid or alkali solutions to break down the bitter substances in grapefruit peel, thus removing the bitterness. However, this method can easily damage the beneficial components in grapefruit peel, leading to a decrease in the nutritional value of the product. In addition, the use of acid and alkali solutions will bring about cumbersome steps such as subsequent neutralization and cleaning, increasing processing costs and potentially causing environmental problems.

[0005] Enzymatic hydrolysis breaks down bitter substances using specific enzyme preparations. It has the advantages of high specificity and minimal damage to beneficial components. However, enzyme preparations are expensive, and the reaction conditions are quite demanding, requiring precise control of parameters such as temperature and pH, which is not conducive to large-scale industrial production.

[0006] Furthermore, many existing debittering devices employ a water recycling system, which, while saving water resources to some extent, leads to the accumulation of bitter substances in the recycled water, reducing subsequent debittering efficiency and resulting in incomplete debittering. Moreover, these devices are complex in structure, require high precision, and have high manufacturing and maintenance costs, making them unsuitable for the production needs of small and medium-sized enterprises. Therefore, developing a debittering device for pomelo peels that is highly efficient, effective, low-cost, and easy to operate is of significant practical importance. Utility Model Content

[0007] To address the aforementioned technical problems, this utility model discloses a debittering device for processing pomelo peel, comprising a frame, a roller assembly, a spraying system, an ultrasonic generator, a drive system, and a dehydration system. The roller assembly is mounted on the frame and includes a cylindrical roller with several permeable holes on its wall. One end of the roller has a feed inlet, and the other end has a discharge outlet, both equipped with sealing doors. The spraying system includes a hot water tank, a water pump, spray pipes, and spray heads. The hot water tank stores hot water. The spray pipes axially extend through the side of the roller and are positioned above the inside of the roller, with a shut-off switch at their connection point. Multiple spray heads are mounted on the spray pipes. The water pump is connected to both the hot water tank and the spray pipes. The ultrasonic generator is mounted on the inner wall of the roller near the spray heads. The drive system drives the roller to rotate. The dehydration system drives the roller to rotate at high speed to dehydrate the pomelo peel. A drain pipe is connected below the roller.

[0008] Furthermore, the diameter of the water-permeable holes in the roller is 2-5mm, the number of ultrasonic generators is 2-4, the frequency of the ultrasonic generators is 20-40kHz, and the power is 300-500W. The diameter of the water-permeable holes ensures that the sprayed water and bitter water can pass through smoothly, while preventing the pomelo peel from leaking out of the holes. Ultrasonic waves are generated during the spraying process. Utilizing the cavitation effect of ultrasonic waves, the dissolution of bitter substances in the pomelo peel is accelerated, improving the debittering efficiency.

[0009] Furthermore, the drive system includes a motor, a reducer, and a transmission belt. The motor drives the drum to rotate via the reducer and transmission belt, with the drum's rotational speed ranging from 10 to 30 r / min, to meet the needs of different debittering stages.

[0010] Furthermore, the dehydration system includes a dehydration motor and a transmission mechanism. The dehydration motor is connected to the drum through the transmission mechanism. The speed range of the dehydration motor driving the drum to rotate at high speed is 800-1200 r / min.

[0011] Furthermore, the hot water tank is equipped with a temperature sensor and a heating device, and the hot water temperature inside the tank is controlled between 60-100℃.

[0012] Furthermore, the frame is made of stainless steel with adjustable feet at the bottom, and the sealing door uses silicone seals. As the supporting foundation for the entire device, it is made of stainless steel, possessing sufficient strength and stability to effectively withstand the weight of the various components and vibrations generated during operation. Adjustable feet at the bottom of the frame allow for easy adjustment of the device's level according to actual site conditions, ensuring stable operation. The silicone seals on the sealing door effectively prevent water leakage during operation. The rollers are connected to the frame via bearings, allowing for flexible rotation.

[0013] Furthermore, the spray head is directed towards the inside of the drum, and the spray flow rate of the spray system is adjustable, with an adjustment range of 8-15L / min.

[0014] Beneficial effects High efficiency in removing bitterness, saving a lot of time This device uses a combination of spraying and ultrasonic waves for debittering. The cavitation effect of the ultrasound waves disrupts the cell wall structure of the pomelo peel, accelerating the dissolution of bitter substances into the water. Compared to the traditional brine soaking method, the debittering time is shortened by more than 60%. Simultaneously, the bitter water produced during each debittering step is directly discharged, preventing the accumulation of bitter substances in the water and thus avoiding affecting subsequent debittering effects. This eliminates the need for frequent changes of the soaking solution, further saving operating time and improving overall processing efficiency.

[0015] The product effectively removes bitterness and is of high quality. The device employs a two-step hot water spray debittering process. The first step quickly removes most of the bitter substances, while the second step effectively removes any remaining stubborn bitter substances. The hot water also has a sterilizing effect, reducing microbial contamination. Furthermore, the two centrifugal dehydration steps thoroughly remove the bitter juice from the pomelo peel, preventing any bitter residue and ensuring complete debittering. This effectively improves the taste and quality of processed pomelo peel products.

[0016] Save water and reduce production costs Although this device does not employ a water recycling system, its high debittering efficiency significantly reduces the total processing time. Furthermore, the sprayed water directly acts on the grapefruit peel, resulting in high utilization. The actual total water consumption is reduced by 30%-40% compared to the traditional soaking method that requires multiple brine changes. Simultaneously, the device has a simple structure, mainly composed of conventional components such as rollers, a spray system, and an ultrasonic generator. It requires no high-precision control components, resulting in low manufacturing and maintenance costs, effectively reducing production investment for small and medium-sized enterprises.

[0017] Easy to operate and highly adaptable The entire debittering process of the device can be automated through an electrical control system. Operators only need to complete simple steps such as feeding, starting the equipment, and discharging, reducing the difficulty of operation and labor intensity. In addition, parameters such as drum speed, spray flow rate, ultrasonic power, and water temperature can be adjusted according to the actual conditions of the pomelo peel. It is suitable for debittering pomelo peels of different ripeness and thickness, and has strong adaptability and practicality, making it easy to promote and apply on a large scale in industry. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of the present invention. Reference numerals: 1-Frame, 2-Roller assembly, 21-Roller, 22-Water permeable hole, 23-Inlet, 24-Outlet, 25-Sealed door, 3-Spraying system, 31-Hot water tank, 32-Water pump, 33-Spraying pipe, 34-Spray head, 4-Ultrasonic generator, 5-Drain pipe. Detailed Implementation

[0019] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0020] like Figure 1 As shown, the present invention relates to a debittering device for processing pomelo peel, comprising a frame 1, a roller assembly 2, a spray system 3, an ultrasonic generator 4, a drive system, and a dehydration system; the roller assembly 2 is mounted on the frame 1, and includes a cylindrical roller 21 with several water-permeable holes 22 on its wall; one end of the roller 21 has a feed inlet 23, and the other end has a discharge outlet 24, both equipped with sealing doors 25; the spray system 3 includes a hot water tank 31, a water pump 32, spray pipes 33, and spray nozzles. The head 34, the hot water tank is used to store hot water, the spray pipe 33 runs through the side of the roller 21 and is axially arranged inside the roller 21, and a cut-off switch is provided at the connection with the roller 21. The spray pipe 33 is equipped with multiple spray heads 34. The water pump 32 is connected to the hot water tank 31 and the spray pipe 33 respectively. The ultrasonic generator 4 is installed on the inner wall of the roller 21 near the spray head 34. The drive system is used to drive the roller 21 to rotate. The dehydration system is used to drive the roller 21 to rotate at high speed to achieve dehydration of grapefruit peel. A drain pipe 5 is connected to the bottom of the roller 21.

[0021] The diameter of the water-permeable holes 22 in the roller 21 is 2-5mm. There are 2-4 ultrasonic generators 4 with a frequency of 20-40kHz and a power of 300-500W. The drive system includes a motor, a reducer, and a transmission belt. The motor drives the roller 21 to rotate via the reducer and transmission belt, with a rotational speed range of 10-30 r / min. The dehydration system includes a dehydration motor and a transmission mechanism. The dehydration motor is connected to the roller 21 via the transmission mechanism, and the rotational speed range when the dehydration motor drives the roller 21 to rotate at high speed is 800-1200 r / min. The hot water tank 31 is equipped with a temperature sensor and a heating device, and the hot water temperature inside the tank is controlled at 60-100℃. The frame 1 is made of stainless steel, with adjustable feet at the bottom. The sealing door 25 uses a silicone seal. The spray head 34 sprays towards the inside of the roller 21, and the spray flow rate of the spray system 3 is adjustable, with an adjustment range of 8-15 L / min.

[0022] Implementation steps Step 1: Initial hot water spray to remove bitterness (equivalent to salt water soaking) First, open the sealed door of the roller's feed inlet and place the pre-treated pomelo peels (different pre-treatment methods are implemented according to different product processing requirements) into the roller, then close the sealed door. Turn on the heating device of the hot water tank to heat the hot water to 60-80℃, then start the water pump connected to the hot water tank. The water pump inputs sufficient hot water into the spray pipe. Close the shut-off switch at the roller interface of the spray pipe, and start the drive system to make the roller rotate slowly at a speed of 15-20 r / min. At the same time, the spray pipe sprays hot water onto the pomelo peels inside the roller through the spray nozzles, with the spray flow rate controlled at 10-15 L / min. During this process, turn on the ultrasonic generator, setting the ultrasonic frequency to 25-35kHz and the power to 350-450W. The ultrasonic waves act on the pomelo peels and spray water, accelerating the dissolution of bitter substances in the pomelo peels. The bitter water generated by the spraying flows out of the drum through the water-permeable holes on the drum wall and is then discharged directly through the drain pipe. This step lasts for 20-25 minutes, which is equivalent to the traditional brine soaking process, but the debittering efficiency is greatly improved.

[0023] Step 2: Initial Dehydration After completing the first step of spray debittering, turn off the spray system and ultrasonic generator, while keeping the drum rotating. Start the dehydration system, causing the dehydration motor to drive the drum at a high speed of 1000-1200 r / min, using centrifugal force to shake out the bitter water adsorbed from the grapefruit peel. The shaken-out bitter water also flows out of the drum through the permeable holes and is then discharged directly through the drain pipe. Set the dehydration time to 5-10 minutes, until there are no obvious water droplets on the surface of the grapefruit peel, further removing the bitter water from the grapefruit peel.

[0024] Step 3: Spray with hot water again to remove bitterness. After completing the second step, reduce the drum speed to a stop. Start the hot water tank and open the shut-off switch at the drum interface of the spray pipe. The water pump will then supply sufficient hot water to the spray pipe again. Next, close the shut-off switch at the drum interface and spray hot water onto the grapefruit peel inside the drum through the spray pipe and spray heads, maintaining a flow rate of 8-12 L / min. Hot water spraying further removes residual bitter substances from the grapefruit peel and also has a certain bactericidal effect. The bitter water produced by spraying flows out of the drum through the permeable holes and is then discharged directly through the drain pipe. This step lasts for 15-20 minutes.

[0025] Step 4: Centrifuge and dehydrate again After the third step is completed, turn off the spray system and restart the dehydration system, causing the drum to rotate at a high speed of 800-1000 rpm for a second centrifugal dehydration for 5-8 minutes to thoroughly remove moisture and residual bitterness from the pomelo peel. After dehydration, turn off the dehydration system and drive system, open the discharge port sealing door of the drum, and remove the debittered pomelo peel, which is then ready for subsequent processing steps.

[0026] This device employs a combination of spraying and ultrasonic waves for debittering. The cavitation effect of ultrasound disrupts the cell wall structure of the pomelo peel, accelerating the dissolution of bitter substances into the water. Bitter water generated during each debittering step is directly discharged, saving operation time and improving overall processing efficiency. The hot water spraying debittering process quickly removes most of the remaining stubborn bitter substances, preventing residue and ensuring thorough debittering. This device boasts high debittering efficiency, significantly shortening the total processing time. Furthermore, the sprayed water acts directly on the pomelo peel, resulting in high utilization. Actual total water consumption is reduced by 30%-40% compared to the traditional soaking method involving multiple brine changes. The device has a simple structure, low manufacturing cost, and is easy and cost-effective for maintenance, effectively reducing production investment for small and medium-sized enterprises. The entire debittering process can be automated through an electrical control system, reducing operational difficulty and labor intensity.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A debittering device for processing pomelo peel, characterized in that, The system includes a frame (1), a roller assembly (2), a spray system (3), an ultrasonic generator (4), a drive system, and a dewatering system. The roller assembly (2) is mounted on the frame (1). The roller assembly (2) includes a cylindrical roller (21). The roller (21) has several water-permeable holes (22) on its wall. One end of the roller (21) has a feed inlet (23), and the other end has a discharge outlet (24). Both the feed inlet (23) and the discharge outlet (24) are equipped with sealing doors (25). The spray system (3) includes a hot water tank (31), a water pump (32), a spray pipe (33), and spray heads (34). The hot water tank is used to store water. Hot water, the spray pipe (33) runs through the side of the roller (21) and is axially arranged inside the roller (21) and above it. A cut-off switch is provided at the connection with the roller (21). The spray pipe (33) is provided with multiple spray heads (34). The water pump (32) is connected to the hot water tank (31) and the spray pipe (33) respectively. The ultrasonic generator (4) is installed on the inner wall of the roller (21) near the spray head (34). The drive system is used to drive the roller (21) to rotate. The dehydration system is used to drive the roller (21) to rotate at high speed to achieve dehydration of grapefruit peel. A drain pipe (5) is connected to the bottom of the roller (21).

2. The debittering device for pomelo peel processing according to claim 1, characterized in that, The diameter of the water-permeable hole (22) of the roller (21) is 2-5mm, the number of ultrasonic generators (4) is 2-4, the frequency of the ultrasonic generators (4) is 20-40kHz, and the power is 300-500W.

3. The debittering device for pomelo peel processing according to claim 1, characterized in that, The drive system includes a motor, a reducer and a transmission belt. The motor drives the roller (21) to rotate through the reducer and the transmission belt. The rotational speed of the roller (21) is 10-30 r / min.

4. The debittering device for pomelo peel processing according to claim 1, characterized in that, The dehydration system includes a dehydration motor and a transmission mechanism. The dehydration motor is connected to the drum (21) through the transmission mechanism. The speed range of the dehydration motor driving the drum (21) to rotate at high speed is 800-1200 r / min.

5. The debittering device for pomelo peel processing according to claim 1, characterized in that, The hot water tank (31) is equipped with a temperature sensor and a heating device, and the hot water temperature in the hot water tank (31) is controlled at 60-100℃.

6. The debittering device for pomelo peel processing according to claim 1, characterized in that, The frame (1) is a stainless steel frame, and the bottom of the frame (1) is provided with adjustable feet. The sealing door (25) is made of silicone sealant.

7. The debittering device for pomelo peel processing according to claim 1, characterized in that, The spray head (34) sprays towards the inside of the drum (21), and the spray flow rate of the spray system (3) is adjustable, with an adjustment range of 8-15L / min.

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