JPH0198423A - Thermal sterilizing vessel for producing artificial culture medium for mushrooms - Google Patents

Abstract

PURPOSE:To obtain the title sterilizing vessel, equipped with a horizontal vessel body, having a double wall structure, heating the inner wall part and feeding steam to the interior of the vessel chamber and two pairs of stirring screws provided on a tubular shaft heated with steam and capable of carrying out sterilization treatment in a short time. CONSTITUTION:A raw material for an artificial culture medium is charged from a charging port 3 into a vessel chamber 6 to close the charging port 3 and a discharge port 4. Steam is made to flow from steam inlets (5a) and (10a) into a horizontal vessel body 1 and a screw type stirrer 2. The stirrer 2 is then rotated to heat-treat the raw material for the artificial culture medium while stirring the raw material with stirring screws (12a), (12b), (13a) and (13b) at a high temperature under a high pressure. Steam in the steam chamber 5 is partially passed through a filter 7 and fed to the vessel chamber 6. Thereby noxious components in the raw material for the artificial culture medium are vaporized and discharged from a steam discharge port (5c).

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a heat sterilization pot used for producing an artificial culture medium for mushrooms.

[Conventional technology]

In the conventional production of artificial culture media, the artificial culture medium raw materials to be heat sterilized are packed or bottled in predetermined amounts into bags or bottles used for culturing mushrooms, and heat sterilized in a high-pressure sterilizer.

[Problem that the invention seeks to solve]

However, since it is packaged in bags or bottles, it is bulky and has the disadvantage that the effective internal volume in the high-pressure sterilization pot is limited. In addition, because the artificial culture medium raw materials are not stirred and are heat-treated while stationary in the bottle or bag, heat sterilization takes time, and general high-pressure sterilization kettles have a single door, so it takes time to put them in and take them out. . Furthermore, containers made of plastic or glass are not susceptible to rapid cooling and require gradual cooling, which is time consuming and inefficient.

In addition, the main raw material, sawdust, is mainly made from broad confectionery wood such as oak, but coniferous wood is also increasingly being used, and it contains phenols and terpenes that are harmful to the germination and growth of mushroom fungi. The conventional method of heating artificial culture medium materials sealed in a container had the disadvantage that some terpenes remained in the container, even though sterilization could be achieved.

An object of the present invention is to provide a heat sterilization pot for producing an artificial mushroom culture medium that can eliminate these drawbacks in the production of conventional artificial mushroom culture media.

(c) Means for Solving the Problem] In order to achieve the purpose of the heating sterilization pot for producing mushroom artificial culture medium of the present invention, the heat sterilization pot for producing artificial culture medium for mushrooms has a heat sterilization pot that allows water to flow between the inner and outer walls for heating through a filter provided on the upper part of the inner wall. A double-walled horizontal pot body that supplies a portion of the water vapor into the pot chamber, and a screw-shaped stirring mechanism installed around a tubular shaft that is installed horizontally in the pot chamber of the horizontal pot body and is heated by letting the steam flow into the pot chamber. Consisting of a screw-type stirrer equipped with blades and a steam outlet installed in the upper part of the steam chamber of the horizontal pot body to discharge and remove components harmful to the growth of mushroom bacteria in the artificial medium material inserted into the pot chamber. It is characterized by

〔Example〕

The features of the present invention will be specifically explained below using examples.

The heat sterilization pot for producing mushroom artificial culture medium of the present invention comprises the first
As shown in the figure, the main components are a horizontal pot body 1 and a screw type stirrer 2 rotatably provided in the pot chamber 6.

The horizontal pot body 1 has, for example, an outer diameter of 120 cm and a length of 250 cm.
cI111 is a type of pressure-resistant container with an internal volume of 1.5 m'.

At the top of the horizontal pot body 1, a pressure shutter 3a is installed near the side wall in order to charge the mushroom artificial culture material into the pot chamber 6.
An input port 3 having a diameter is provided. Furthermore, a discharge port 4 having a pressure shutter 4a is provided at the center of the lower part of the horizontal pot body 1 in order to discharge heat-sterilized mushroom artificial culture medium. The horizontal pot body 1 usually has an outer wall 1a covered with a heat insulating material.
A cylindrical steam chamber 5 having a double wall structure and an inner wall 1b is formed around the steam chamber 5. The upper part of the inner wall 1b between the steam chamber 5 and the pot chamber 6 is made of strong cloth such as canvas or a film with many pores, so that harmful substances can diffuse into the steam and return to the raw materials. A filter 7 is provided to prevent the intrusion of Further, a one-touch inspection lid 8 for inspecting and replacing the filter 7 is provided on the outer wall 1a above the filter.

In FIG. 1, 5a is a steam outlet, 5b is a drain pipe, and 5c is a steam outlet equipped with a safety valve.

The screw type stirrer 2 is rotatably supported by airtight bearings 9a and 9b provided on both side walls of the horizontal pot body 1 by the power of an electric motor or the like. The screw type stirrer 2 is hollow and has a steam port 10a on one side and a steam outlet 10b on the other side, and has a tubular shaft 11 that is heated by introducing steam, and a central portion of the tubular shaft 11. two pairs of stirring screws each fixedly fixed around the tubular shaft 11 symmetrically to the
It consists of 12a, 12b and 13a, 13b.

For this reason, the Sufu IJ type stirrer 2 uniformly stirs the artificial medium raw material in the pot chamber 6 by rotation, and also propels it toward the center to collect it, or moves it toward both sides of the pot chamber to collect it. It can be divided and collected.

Next, the operation of the heat sterilization pot for producing mushroom artificial culture medium of the present invention will be explained.

The discharge port 4 is closed by operating a manual or automatic pressure shutter 4a, the pressure shutter 3a of the input port 3 is operated to open the input port 3, and a predetermined amount of the artificial medium raw material is heated and sterilized into the pot. After charging into the chamber 6, the pressure shutter 3a is operated to seal the charging port 3. Steam is caused to flow from the steam population 5a of the horizontal pot body 1 and the steam population 10a of the screw type stirrer 2 into the horizontal pot body 1 and the screw type stirrer 2 to start heating, and the screw type stirrer 2 is heated by an electric motor.
Rotate to stir the artificial medium ingredients! I x12a,
12El and stirring sufu IJ 513a, 13b, predetermined pot internal temperature 120°C, pot internal pressure 1.2 kg
/ci for a predetermined period of time while stirring.

Stirring by the Sufu IJ type stirrer 2 is carried out by rotation in one direction, which propels the artificial medium raw materials to the center of the horizontal pot body 1 and gathers them, and propels them to both sides and divides them into two parts. The structure is such that it returns to the central discharge port.

The main raw material for artificial medium raw materials is sawdust, which is made from broad-leaved trees such as sawtooth oak, as well as coniferous trees, so it contains phenols and terpenes that are harmful to the germination of mushroom fungi, but water vapor comes into direct contact with the artificial medium raw materials. Therefore, it is vaporized during the heat treatment, passes through the filter 7, and is discharged from the steam outlet 5C together with the waste steam.

After heat treatment for a predetermined time, water vapor populations 5a and 1(l
Close a, stop the supply of steam, and reduce the pressure.

The sterilized artificial medium is prepared by rotating the screw type stirrer 2 so that the artificial medium is propelled toward the center and collected, and by opening the discharge port 4 by imitating the pressure shank 4a, and then using a cooling device (not shown) and a heating device. After transferring to a dispensing device, a predetermined amount of mushrooms is placed in a culture bottle or bag and then sealed. Mushrooms can be inoculated into the artificial medium that has reached a predetermined temperature by a conventional method.

〔Effect of the invention〕

According to the heat sterilization pot for producing mushroom artificial culture medium of the present invention, it has a double wall structure and heats the inner wall part, and also heats the horizontal pot body and two pairs of stirring screws that supply water vapor into the pot chamber using steam. It consisted of a screw type stirrer installed on a heated tubular shaft. For this reason, the artificial medium raw material, which is a mixture of sawdust, nutritional components, and water, is heated by the inner wall of the pot chamber heated to a high temperature and the steam supplied directly into the pot chamber. Further, the artificial medium raw material is internally heated and stirred by a screw type stirrer having a tubular shaft heated to a high temperature. Therefore, the artificial medium raw material is sterilized evenly at high temperature and under high pressure in a short period of time. Additionally, phenols and terpenes harmful to the germination of mushrooms are vaporized and removed during the heat treatment process. By lowering the pressure after processing artificial medium raw materials, products can be obtained in a significantly shorter time. Since containers such as bags and bottles are not used during manufacturing, the volume of the pot chamber is relatively small.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view showing a heat sterilization pot for producing an artificial culture medium for mushrooms according to the present invention. 1: Horizontal pot body la: Outer wall 1b = inner wall 2: Screw type stirrer 3: Inlet port 3a: Pressure shutter 4: Discharge port 4a:
Pressure shutter 5: Steam chamber 5a: Steam inlet 5b: Drain pipe 5c: Steam outlet 6: Pot chamber
7: Filter 8: Lid 9a, 9b: Bearing 10a: Steam population 10b: Steam outlet 11: Tubular shaft 12a, 12b: Pair of stirring screws 13a, 13b Patent applicant
Ishibashi Manufacturing Co., Ltd. Oriyo Masato
Masu Kobori (and 2 others) Figure 1

Claims (1)

[Claims] 1. A double-walled horizontal pot body that supplies part of the steam that flows between the inner and outer walls for heating through a filter installed on the upper part of the inner wall to the pot chamber, and a horizontal pot that flows horizontally into the pot chamber of the horizontal pot body. A screw-type stirrer is equipped with screw-type stirring blades around a tubular shaft that is heated by introducing water vapor into it, and discharges and removes components harmful to the growth of mushroom fungi in the artificial medium raw materials inserted into the pot chamber. A heat sterilization pot for producing an artificial culture medium for mushrooms, characterized by comprising a steam chamber provided in the upper part of the horizontal pot body and a steam outlet.