JPS63226270A - Sealed grinder - Google Patents

Abstract

PURPOSE:To eliminate oxidative change of color and to prevent change in natural flavor, by feeding steam, etc., to a grinder sealed by a front valve device and a rear valve device transporting fruits and vegetables. CONSTITUTION:Fruits or vegetables are transported from a raw material feed chute 1 through a sealed rotary valve 2 to a grinder 4. Steam is introduced through a nozzle 3 and the fruits or vegetables are ground in a heated state. The ground fruits or vegetables are sent from a transportation pump 5 of sealed structure through a heating part 7 and a quenching part 8 of a cooker 6 to a squeezing machine 9.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a hermetic crushing device for food and beverages such as fruits and vegetables.

Conventional technology In general, in the production of fruit juices such as fruits and vegetables, especially fruit juices such as apples, antioxidants such as ascorbic acid (vitamin C) are added to prevent oxidative discoloration due to the action of polyphenol oxidase contained in apples, etc. ing. However, ascorbic acid is expensive, and there are problems such as the natural flavor is impaired due to the chemical reduction effect of ascorbic acid.

In addition, the method of manufacturing carrot vegetable juice involves peeling and cutting the carrots, then blanching them to prevent oxidative discoloration caused by the action of enzymes, then crushing and squeezing the juice. There are problems such as a decline in the quality of vegetable juice due to active ingredients such as sugar and natural flavor escaping into the hot water, and an increase in equipment and operating costs due to the three steps of cutting, blanching and crushing. Ta.

Problems to be Solved by the Invention Therefore, the present invention aims to prevent oxidative discoloration due to the action of enzymes, etc., to prevent changes in natural flavor, and to simplify processes and equipment, reduce operating costs, etc. It is an object of the present invention to provide a hermetic crushing device for fruits, vegetables, etc., which has a simple and reliable structure.

Means for solving the problem, that is, a closed crushing device according to the present invention comprises: a pre-stage valve device that transports fruits, vegetables, etc. while shutting them off from the outside air; a device that crushes the fruits, etc. that are sent; and the crushing device. The apparatus is characterized by a configuration that includes a device that supplies a heating medium such as steam to the container, and a downstream valve device that transports crushed fruits and the like in a hermetically sealed manner.

Therefore, according to the configuration of the present invention, water vapor is supplied into the crushing device which is sealed by the valve devices at the front and rear stages for transferring fruits, vegetables, etc. to cut off outside air and heat the enzymes. It is possible to deactivate it, eliminate oxidative discoloration, obtain stable color tone, and retain natural flavor.

Example The present invention will be explained below based on embodiments shown in the drawings.

This embodiment is an apparatus for producing apple juice, and the first half of the process for producing apple juice is the hermetic crushing apparatus according to the present invention.

Conventionally, crushing has been carried out using a crusher such as a hammer mill, but since the crushing is carried out at room temperature, ascorbic acid (vitamin C
) is injected with a metering pump as a 5-10% solution of about 1k (l) per 1 TON of raw material.

In the present invention, a sealed rotary valve 2 is used as a pre-stage valve device under the raw material input chute 1, and before crushing the apples in the subsequent stage, steam is blown through the steam nozzle 3, and the raw material is heated at the same time as the outside air is cut off. , continuously fed into the crusher 4 without adding ascorbic acid.
“Although the crusher 14 is not shown, the penetration part of the rotating shaft has a sealed structure with a special sealing mechanism, and the inside of the crusher 4 is filled with steam supplied through the steam nozzle 3, so that fruits, etc. are heated during crushing. The situation is as follows.

The transport pump 5, which serves as a subsequent valve device, is a sanitary type monopump with a sealed structure having a special sealing mechanism, and has a structure suitable for solid-liquid transport and does not cause material adhesion. The crushed apples are transported by the transport pump 5 and reach the crusher 6.

Kutsuker 6 is a double pipe heat exchanger for viscous liquids, with heating section 7
The heating section maintains a constant temperature of the crushed material, and the quenching section lowers the temperature within a short period of time to suit the performance of the subsequent process of squeezing lI9, ensuring the optimal temperature and time. Can be adjusted.

The heating section 7 is equipped with a static mixer inside, which has a simple structure and does not easily cause sticking or burning, so it can be easily cleaned and has excellent heat transfer performance. Note that this extractor 6 is not necessarily necessary, and the transport pump 5 can be directly connected to a juice extraction machine or the like.

To be more specific, the washed raw apples (in the case of a small capacity device, are divided into 4 to 8 pieces by a dividing machine) are placed in chute 1.
and is forcibly sent to the crusher ta4 by the closed rotary valve 2.

A steam nozzle 3 is provided below the rotary valve 2 to supply steam through an iron removal filter 10 in order to simultaneously heat raw apples and shut off outside air.
Further, in order to maintain the temperature of the raw apples at the outlet at a predetermined temperature, an automatic temperature control valve 11 is provided at the steam inlet.

A screw feeder 14 is provided at the entrance of the crusher 4 to smoothly feed heated raw apples.

Although the details of the crusher 4 are not shown, it is a rotating bin/disk type crusher (Nitaly 2S type crusher manufactured by Kikkoman Corporation).
By preventing the adhesion of raw materials, preventing leakage through a special sealing mechanism, and having a heat-resistant design, it has excellent performance in heating and crushing apples, which is suitable for the subsequent process of juicing.

The crushed apples from the crusher 4 are sent out under pressure by a sanitary monopump 5 (NFL-8 model manufactured by Heishin Equipment Co., Ltd.), maintained at a predetermined temperature and time by a heating calf, and then cooled in a crusher. The juice is rapidly cooled by the cooling section 8 and sent to the subsequent process, the juice extraction Ia9.

The holding temperature of the heating section 7 of the heater 6 is regulated by the control valve 12, and the holding time can be adjusted by the number of heating tubes.

The cooling humidity of the cooling section 8 of the cooler 6 is regulated by a control valve 13, and the cooling time can be adjusted by the number of cooling pipes.

−〇− Optimum conditions can be selected by changing the rotation speed of the crusher to deal with changes in crushability due to the variety of raw apples, ripening marks, etc.

Effects of the Invention As can be seen from the above explanation, according to the configuration of the present invention, valve devices are provided before and after the crushing device, and water vapor or the like is supplied to the closed crushing device, so that the fruits to be crushed are exposed to the outside air. By blocking and heating, it is possible to deactivate enzymes, eliminate problems caused by oxidative discoloration, obtain a stable color tone, and at the same time retain the natural flavor, reducing the production cost of sap. Quality can be improved and stability can be achieved.

[Brief explanation of the drawing]

The drawing is a perspective view of an apple juice manufacturing apparatus using a closed crushing apparatus showing an embodiment of the present invention. 2... Sealed rotary valve, 3...
Steam nozzle, 4... Crusher, 5... Transport pump. 71

Claims (1)

[Claims] A pre-stage valve device that transports fruits, vegetables, etc. while shutting them off from the outside air,
A sealed device characterized by comprising a device for crushing fruits, etc. that are sent, a device for supplying a heating medium such as steam to the crushing device, and a post-stage valve device for transporting the crushed fruits, etc. in a sealed manner. Crushing equipment.