JPH0723758A - Method for peeling skins of fruits and machine for peeling skins of fruits - Google Patents

Abstract

PURPOSE:To provide a method for peeling the skins of fruits, capable of rapidly, simply and massively peeling the skins of the fruits, reducing the loads of operators in a processing site and saving costs by the utilization of a pressure attack on the quick reduction of air pressure, and a machine for peeling the skins of the fruits. CONSTITUTION:This machine for peeling the skins of fruits is provided with a closed tank 14 equipped with a fruit-charging or discharging member 12, and a compressing member 16 for raising the pressure of air in the closed tank and a pressure-reducing member 18 for reduce the pressure of the air in the closed tank at a stroke are disposed on the closed tank. Fruits are received in the closed tank, and the pressure of air in the closed tank is raised. Subsequently, the pressure of the air in the closed tank is reduced at a stroke. Thus, the skins of the fruits can be released from the fruits by the pressure attack action, and the peeling of the massive fruits can rapidly be performed to save the cost.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fruit peeling machine.

[0002]

2. Description of the Related Art Conventionally, when fruit such as tangerine with a skin is packaged for canning, bottling, etc., the skin of the fruit is manually peeled by an operator. The pulp portion is treated with a chemical solution and separated into sand bags, which are then packaged together with syrup for canning, bottling and the like.

[0003]

[Problems to be Solved by the Invention] However, it takes a lot of time to manually peel off the peel of a fruit with skin, and if a large amount of fruit is directly peeled with a fingertip, the fingertip becomes rough, so that it is thin. There was a problem in that it was necessary to wear gloves made of vinyl cloth to carry out the work, and the skin could not be quickly removed.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to perform a peeling treatment on fruits with skin such as tangerine when the pressure in the closed tank is reduced. An object of the present invention is to provide a fruit peeling method and a fruit peeling machine capable of promptly and large-scale peeling treatment utilizing the action, and reducing the burden on the operator at the processing site of the fruit with peel.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a closed tank body 1 containing fruits 52.
4, the pressure in the closed tank 14 is reduced at a stroke, and the peel 60 is peeled from the pulp 62 by the pressure action when the pressure is reduced. To be done.

Next, there is provided a closed tank body 14 having a fruit feeding / unloading section 12, and the closed tank body 14 has a pressurizing section 16 for pressurizing the pressure in the closed tank body 14 and the closed tank body. The fruit peeling machine 10 is provided with a decompression unit 18 for decompressing the pressure inside the body 14 at once.

In addition, the closed tank body 14 may be provided with a fruit storage portion 56.

[0008]

According to the method for peeling fruits and the peeling machine for fruits according to the present invention, the fruits are housed in the closed tank body to increase the pressure in the tank body, and after a certain period of time, the pressure is reduced at once. The peeling force causes the peel to peel from the flesh of the fruit. Therefore, a large amount of fruits can be quickly peeled off in a short time, the burden on the operator can be reduced, and the processing cost can be saved.

[0009]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 3 show a fruit peeling machine 10 for carrying out the method for peeling fruits according to the present invention. In the method for peeling fruits, the fruits 52 are housed in the closed tank body 14 and the internal pressure is increased within a range of 3 to 8 atm, and the pressure is reduced at once in 3 to 5 minutes after the pressurization. However, the pericarp 60 of the fruit 52 is peeled off by the pressure action at this time. Therefore, a large amount of fruits can be peeled in a short time, the burden on the operator at the processing site can be reduced, and the peeling processing cost can be saved.

The fruit peeling machine 10 comprises, as shown in the figure, a horizontal cylindrical closed tank body 14 having a fruit loading / unloading section 12. The closed tank body 14 includes a pressurizing portion 16 for pressurizing the pressure in the closed tank body 14.
And a decompression unit 18 that reduces the pressure inside the closed tank body 14 at a stroke. The closed tank body 14 is not limited to the cylindrical shape, and may be a square tube shape, a hexagonal tube shape, or the like, or may be installed vertically.

The horizontal cylindrical closed tank body 14 has its lower surface supported by a supporting leg 20, and has flanges 22 and 22 at the periphery of the openings at both ends, and a closing plate 24 is attached to the flange 22 at one end by bolts or the like. It is fixed. The input / output section 12
Is to be engaged with a door body 28 pivotally attached to a hinge 26 provided on the flange 22 on the other end side of the closed tank body 14 and a plurality of locking grooves 30 notched in the peripheral edge of the door body 28. A plurality of tightening bolts 32 pivotally attached to the flange 22 and a grip 34 fixed to the door body 28 on the opposite side of the hinge 26.
And are equipped with.

Thus, the door body 1 of the loading / unloading section 12
2 is closed at one end opening of the closed tank body 14,
The plurality of tightening bolts 32 can be firmly fixed in a state of being engaged with the locking groove 30 on the peripheral edge of the door body 12, and can be crimped in a state in which the pressure does not leak even if the pressure in the closed tank body 14 is increased to several atmospheres. . The door body 12 may be pressure-bonded and fixed by using a pressure-bonding mechanism or the like in which the door body is pressure-bonded to the opening of the tank body while pressing the central portion of the outer surface of the door body with a screw shaft with a handle.

As shown in FIGS. 1 and 3, the pressurizing portion 16 for the pressure in the closed tank body 14 is a stop valve which is communicated with the closed tank body 14 at a position near the closing plate 24 of the closed tank body 14. 36a, a first electromagnetic valve 38a that communicates with the stop valve 36a, and a high-pressure air supply pipe 40 that communicates with the first electromagnetic valve 38a.

The stop valve 36a is always kept open, and the control circuit controls the opening / closing valve of the first electromagnetic valve 38a.
For example, when the pushbutton switch of the control circuit is closed, the first
The electromagnetic valve 38a is opened to supply high temperature and high pressure steam from the high pressure air supply pipe 40. The first electromagnetic valve 38a is closed when the vapor pressure in the closed tank body 14 reaches the set high pressure.

As shown in FIGS. 1 and 3, the decompression section 18 is provided.
Are two stop valves 36b and 36b which are in communication with the pressurizing portion 16 side of the closed tank body 14 and the insertion / extracting portion 12 side position, and are communicated with the respective stop valves 36b, 36b. Second solenoid valves 38b, 38b, and decompression air discharge pipes 42, 42 communicating with the second solenoid valves 38b, 38b,
have.

The stop valves 36b, 36b are kept open, and the first solenoid valve 38a of the pressurizing section 16 is opened by closing the push button switch of the control circuit. At the same time, the second solenoid valve 28b is opened. , 38b are closed. After the pressure in the closed tank body 14 reaches the set pressure and the first solenoid valve 38a is closed, the second solenoid valves 38b and 38b are opened after a preset time of the timer, and the inside of the closed tank body 14 is closed. The pressure of is suddenly reduced to about atmospheric pressure, and the peel of the fruit is peeled off by the pressure action.

Although the decompression section 18 communicates the two second electromagnetic valves 38b, 38b with the closed tank body 14, it may communicate with one electromagnetic valve to reduce the pressure. When the number of solenoid valves that perform pressure reduction increases, the pressure reduction efficiency improves.

A pressure gauge 44, a pressure switch 46, a safety valve 48, etc. are connected to the upper surface side of the closed tank body 14,
The drain valve 50 communicates with the lower surface side.

In the closed tank body 14, a housing portion 5 for containers 54 such as a net basket containing the fruits 52 therein.
6 is provided. As shown in FIG. 2 and FIG. 3, at the positions near both ends in the closed tank body 14, the housing portion 56 is provided with receiving rods 58 horizontally fixed at upper and lower positions on both sides of the inner peripheral surface of the closed tank body 14. It is equipped with 58.

The door 28 of the loading / unloading section 12 of the closed tank body 14 is opened, and the containers 54 are mounted on the receiving rods 58, 58 located on the lower sides of both sides to the other end of the closed tank body 14. The containers 54 are pushed in and the lower surfaces of the four corners of the containers 54 are received by the receiving rod 58. It should be noted that the accommodating portion 56 includes the receiving rod 5
In place of 8, a plurality of support rods are installed at the intermediate height position of the closed tank body 14 in the longitudinal direction of the closed tank body 14,
Alternatively, a plurality of support rods may be installed in the width direction of the closed tank body 14. Alternatively, a net-shaped receiver, a receiving plate or the like may be used, or a plurality of layers may be accommodated vertically. Further, it may have an arbitrary shelf structure corresponding to the shape of the containers. In short, the configuration is not limited to that of the embodiment, and a configuration is possible in which as many fruits as possible are accommodated in the device 10 and can be accommodated while the stools for entering and leaving are held.

In the fruit peeling method and the fruit peeling machine 10 according to the embodiment of the present invention, the door 28 of the loading / unloading section 12 of the closed tank body 14 is opened to make it look like a mandarin orange. Containers 54 accommodating a large number of fruits 52 are received by the respective receiving rods 58 of the accommodating portion 56 in the tank to close the door body 28, and the fastening bolts 32 cause the door body 28 to be opened in the tank body. Close tightly.

At the same time, when the stop valves 36a and 36b are held in the open state, and then the push button switch of the control circuit is closed, the first electromagnetic valve 38a of the pressurizing section 16 is opened to send high pressure. High-temperature, high-pressure steam of about 170 ° C. is sent from the trachea 40 into the closed tank body 14. Note that compressed air may be sent instead of steam.

When the vapor pressure in the closed tank body 14 reaches the set pressure within the range of approximately 3 to 8 atmospheres, the pressure switch 46 operates and the first solenoid valve 38a is closed. As shown in FIG. 4, the high-pressure steam permeates into a small gap D between the skin 60 on the surface side of each fruit 52 and the flesh portion 62 inside during this period. The first solenoid valve 3 of the pressurizing unit 16
3 to 5 minutes after the valve 8a is closed, the second electromagnetic valves 38b and 38b of the pressure reducing portion 18 are opened by a timer operation.

As a result, the high-pressure steam in the closed tank body 14 is released all at once from the depressurized air discharge pipes 42, 42 into the atmosphere, and the pressure action at the time of depressurization causes each of the fruits 52, as shown in FIG. The peel 60 is peeled from the pulp portion 62.

Therefore, the door 28 of the loading / unloading section 12 is opened to take out the fruits inside the container together with the containers 54, and the containers 54 containing the unprocessed fruits are inserted into the housing 56 to open the door. 28 is closed and the push button switch is closed again. It should be noted that the numerical values and the like in the above-mentioned embodiments are the preferred embodiments of the present invention, and the present invention is not limited to these numerical values and the like, and is not limited to “in-tank” disclosed in the claims. Needless to say, various examples of the constitution of "pressurizing the pressure of No. 1, then depressurizing the pressure in the tank at a stroke, and peeling the peel of the fruit by the pressure action at the time of depressurization" are included.

Therefore, the peeling treatment of the fruit with the skin can be carried out promptly by utilizing the pressure effect of reducing the pressure in the closed tank.
A large amount of peeling can be performed, and the worker does not need to peel the peel, and the peel 60 that has been completely peeled or broken while floating from the pulp portion 62 can be easily separated and processed at the processing site. The burden on the person can be reduced.

Although the pressurizing unit 16 and the depressurizing unit 18 are automatically controlled by a control circuit using an electromagnetic valve, the present invention is not limited to this, and for example, stop valves 38a, 38b.
The operator may manually open / close the valve to pressurize or depressurize the pressure in the tank body, and peel the fruit skin by the same pressure effect.

[0028]

As described above, according to the method for peeling fruits according to claim 1, the pressure in the sealed tank body containing the fruits is increased, and then the pressure in the sealed tank is suddenly increased. By depressurizing and peeling the pericarp from the flesh portion by the pressure action at the time of depressurizing the pressure, rapid and large-scale fruit peeling treatment can be performed.

Next, according to the fruit peeling machine according to the second aspect, a closed tank body having a fruit loading / unloading section is provided, and the pressure inside the sealed tank body is applied to the closed tank body. By providing a pressurizing unit that pressurizes and a depressurizing unit that depressurizes the pressure inside the sealed tank at once, it is possible to quickly and in large quantities peel fruit, reducing the burden on the operator and processing. You can save money.

According to the third aspect of the invention, since the fruit container is provided in the closed tank body, it is easy to carry fruit in and out of the tank, and the fruit container is easily carried into the container. The fruits can be uniformly pressed and depressurized in a supported state, and the fruits can be peeled without variation.

[Brief description of drawings]

FIG. 1 is a right side view of a fruit peeling machine according to an embodiment of the present invention.

FIG. 2 is a front view of a fruit peeling machine.

FIG. 3 is a left side view of the fruit peeling machine in which the door body is opened and the tank body is partially opened.

FIG. 4 is an explanatory diagram of a state in which pressure is applied to the outer peripheral surface of fruits.

FIG. 5 is an explanatory view showing a state in which a peel has been applied and the peel has been separated from the pulp portion.

[Explanation of symbols]

 10 Fruit Peeling Machine 12 Input / Exit Port 14 Closed Tank Body 16 Pressurizing Section 18 Decompressing Section 52 Fruits 56 Storage Section 60 Pericarp 62 Pericarp Section

Claims (3)

[Claims] 1. A pressure in a closed tank body containing fruits is increased, and then the pressure in the closed tank is reduced at a stroke, and a peeling force is applied to remove the peel from the pulp portion by a pressure action at the time of reducing the pressure. A method for peeling fruits. 2. A hermetically sealed tank body having a fruit loading / unloading section, wherein the hermetically sealed tank body pressurizes a pressure in the hermetically sealed tank body and reduces the pressure in the hermetically sealed tank body at a stroke. A fruit peeling machine comprising a decompression unit. 3. The fruit peeling machine according to claim 2, wherein a fruit container is provided in the closed tank body.