JPH0596564U - Adapter for magnetic coupling of culture device - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the heat energy applied to the culture tank from escaping to the main body side and improve the efficiency of heat sterilization. [Structure] The lower plate 13 is mounted on the mounting portion of the main body. A culture tank is placed on the upper surface of the upper plate 14. The lower plate 13 and the upper plate 14 are connected by the rods 19 having poor heat conductivity. When the drive side permanent magnet provided on the main body side is rotated, this rotational force is transmitted to the driven side permanent magnet in the culture tank via the lower side permanent magnet 25, the transmission shaft 24, and the upper side permanent magnet 26.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The magnetic coupling adapter of the culture device according to the present invention can be applied to the magnetic coupling of a culture device used for culturing various microorganisms and plant cells, etc., to efficiently heat-sterilize the inside of the culture tank and the culture solution. To do so.

[0002]

[Prior Art]

 A culture device called a bioreactor is widely used for culturing various microorganisms and plant cells. FIG. 3 is a schematic diagram of such a culture device. Microorganisms and plant cells to be cultivated together with the culture solution are placed in the bottomed cylindrical culture tank 1 and are closed by the lid 2. In this state, the pH value, oxygen concentration, temperature, etc. are adjusted in the culture tank 1 and the culture work is performed. During the culturing operation, the above culture solution is continuously stirred by the stirring blade 3.

The lower end of the stirring shaft 4 to which the stirring blade 3 is fixed is fixedly connected to the center of the driven permanent magnet 5 provided at the bottom of the culture tank 1. This driven-side permanent magnet 5 is provided outside the culture tank 1 and faces a driving-side permanent magnet 7 that is driven to rotate by a motor 6. When the drive side permanent magnet 7 is rotated by the motor 6, the stirring blade 3 is rotated via the driven side permanent magnet 5 and the stirring shaft 4, and the culture solution in the culture tank 1 is stirred.

FIG. 4 shows a main part of an actual culture device. The culture tank 1 is configured by closing the lower end opening of a glass cylinder 8 with a bottom plate 9, and the stirring shaft 4 is rotatably supported at the center of the upper surface of the bottom plate 9. Further, a circular convex portion 10 is provided on the lower surface of the bottom plate 9. Such a culture tank 1 can be mounted on the upper surface of the mounting portion 11 provided on the main body of the culture device. Then, when placed, the convex portion 10 and the concave portion 12 on the upper surface of the placing portion 11 are fitted to each other to prevent the culture tank 1 from being displaced on the upper surface of the placing portion 11. The drive side permanent magnet 7 is provided directly below the recess 12.

[0005]

[Problems to be solved by the device]

 The magnetic coupling adapter of the culturing apparatus of the present invention is used for culturing when heat sterilizing the inside of the culturing tank 1 of the culturing apparatus configured as described above, or the culture solution injected into the culturing tank 1. By preventing heat from escaping from the tank 1 to the main body side provided with the mounting portion 11, heat sterilization can be efficiently performed.

When culturing microorganisms and the like using the culturing apparatus, high-temperature steam is fed into the culturing tank 1 before the substance to be cultivated such as microorganisms is put into the culturing tank 1. The inner surface of 1 is heat-sterilized, or the culture solution injected into the culture tank 1 is heated by a heater or the like to heat-sterilize the culture solution.

However, as shown in FIG. 4, when the lower surface of the bottom plate 9 of the culture tank 1 and the upper surface of the mounting portion 11 provided on the main body are in contact with each other over a wide area, the heat applied to the culture tank 1 is increased. Will escape to the placing portion 11 side, and the temperature of the culture tank 1 will not rise easily. As a result, there arise problems such as insufficient sterilization of the inner surface of the culture tank 1 and the culture solution, or unnecessarily long sterilization time.

The magnet coupling adapter of the culture device of the present invention was devised in view of the above circumstances.

[0009]

[Means for Solving the Problems]

 The magnetic coupling adapter of the culture device of the present invention comprises a main body having a mounting portion on the upper surface, a bottomed cylindrical culture tank which can be mounted on the mounting portion, and the inside of the main body. It is applied to a magnetic coupling of a culture device equipped with a drive-side permanent magnet provided directly below the placing portion and a driven-side permanent magnet rotatably provided at the bottom of the above-mentioned culture tank. In a state where the upper surface and the lower surface of the culture tank are separated from each other, the driven permanent magnet is rotated along with the rotation of the drive permanent magnet.

The magnet coupling adapter of the present invention used as described above is provided with a lower plate which can be placed on the upper surface of the above-mentioned mounting portion and a state in which the lower plate is separated from the lower plate, and the above-described upper surface. Rotate between the upper plate on which the culture tank can be placed, the connecting member that connects the upper plate and the lower plate and has a cross-sectional area that is sufficiently smaller than the upper and lower plates, and the lower plate and the upper plate. A transmission shaft provided freely in the vertical direction, fixed to the lower end portion of the transmission shaft, fixed to the lower permanent magnet facing the drive side permanent magnet, and fixed to the upper end portion of the transmission shaft. The driven permanent magnet and the upper permanent magnet that can freely face each other are provided.

[0011]

[Action]

 When using the magnetic coupling adapter of the culture device of the present invention constructed as described above, the lower plate is placed on the placing portion of the main body, and the culture tank is placed on the upper face of the upper plate. In this state, the upper surface of the driving permanent magnet and the lower surface of the lower permanent magnet face each other, and the upper surface of the upper permanent magnet faces the lower surface of the driven permanent magnet. Therefore, when the drive side permanent magnet is rotated, this rotational force is transmitted to the driven side permanent magnet through the lower side permanent magnet, the transmission shaft and the upper side permanent magnet, and the driven side permanent magnet rotates.

With the adapter interposed between the upper surface of the mounting portion and the lower surface of the culture tank, the upper surface of the mounting portion contacts the lower surface of the lower plate and the lower surface of the culture tank contacts the upper surface of the upper plate. The upper plate and the upper plate are connected by a connecting member having a cross-sectional area that is sufficiently smaller than the upper and lower plates. Therefore, the heat transfer area from the upper plate to the lower plate is small, and the heat transferred from the culture tank to the upper plate is difficult to be transferred to the lower plate.

As a result, the heat energy applied to the culture tank increases the temperature of the inner surface of the culture tank or the culture solution injected into the culture tank, and is effectively used.

[0014]

【Example】

 1 and 2 show an embodiment of the present invention. A lower plate 13 which can be freely placed on the upper surface of the mounting portion 11 (FIG. 4) of the main body of the culture apparatus, and a state in which the lower plate 13 is separated from the lower plate 13, and the culture tank 1 (FIGS. The flexible upper plate 14 is made of a stainless steel plate or the like into a rectangular thick plate shape. The lower plate 13 is provided with a convex portion 15 at the lower surface central portion thereof, which is fitted with the concave portion 12 of the upper surface of the mounting portion 11, and the upper plate 14 is provided with the convex portion 10 of the lower surface of the culture tank 1. Recesses 16 to be fitted are formed respectively. A circular hole 17 is formed in the central portion of the convex portion 15 and a circular hole 18 is formed in the central portion of the concave portion 16.

The lower plate 13 and the upper plate 14 are arranged in parallel with each other and are connected to each other by four rods 19, 19 which are connecting members made of a material having poor heat transfer property such as synthetic resin. Is linked to. That is, the upper ends of the rods 19 and 19 whose lower ends are coupled and fixed to the four corners of the lower plate 13 are inserted into the small circular holes 20 and 20 formed in the four corners of the upper plate 14, respectively. By screwing nuts 21 and 21 onto the portions of the upper ends of the rods 19 and 19 protruding from the upper surface of the upper plate 14, the lower plate 13 and the upper plate 14 are connected by the four rods 19 and 19. Are connected.

Support plates 22 and 22 are fixed to the upper surface of the lower plate 13 and the lower surface of the upper plate 14 with screws, respectively. Bearings 23 and 23 are supported and fixed to the central portions of the support plates 22 and 22, respectively, and a pair of upper and lower bearings 23 and 23 rotatably support the two upper and lower positions of the transmission shaft 24. There is. The lower permanent magnet 25 fixed to the lower end of the transmission shaft 24 is rotatable inside the circular hole 17. Further, the upper permanent magnet 26 fixed to the upper end of the transmission shaft 24 is rotatable inside the circular hole 18.

When using the magnetic coupling adapter of the culture apparatus of the present invention configured as described above, the lower plate 13 is mounted on the mounting portion 11 of the main body, and the culture tank 1 is mounted on the upper surface of the upper plate 14. In this state, the upper surface of the drive-side permanent magnet 7 (FIGS. 3 to 4) provided on the main body side and the lower surface of the lower permanent magnet 25 face each other, and the driven surface provided on the upper surface of the upper permanent magnet 26 and the bottom portion of the culture tank 1. The lower surface of the side permanent magnet 5 (FIGS. 3 to 4) faces.

Therefore, when the drive side permanent magnet 7 is rotated by the motor 6 (FIG. 3), this rotational force is transmitted to the driven side permanent magnet through the lower side permanent magnet 25, the transmission shaft 24, and the upper side permanent magnet 26. It is transmitted to the magnet 5, and the driven permanent magnet 5 rotates the stirring blade 3 (FIGS. 3 to 4) provided in the culture tank 1.

With the adapter of the present invention interposed between the upper surface of the mounting portion 11 and the lower surface of the culture tank 1 as described above, the upper surface of the mounting portion 11 and the lower surface of the lower plate 13 are The lower surface of the tank 1 is in contact with the upper surface of the upper plate 14, and the lower plate 13 and the upper plate 14 are connected only by a plurality of rods 19 and 19 made of a material having poor heat transferability. Therefore, the heat transfer area from the upper plate 14 to the lower plate 13 is small, and the heat transferred from the culture tank 1 to the upper plate 14 is hard to be transferred to the lower plate 13.

As a result, the heat energy applied to the culture tank 1 during the sterilization work effectively raises the temperature of the inner surface of the culture tank 1 or the culture solution injected into the culture tank 1, so that it is effective. used. When performing the culturing work after the sterilization work, the adapter may be removed from between the mounting portion 11 and the culture tank 1 and the culture tank 1 may be directly mounted on the upper surface of the mounting portion 11, or it may be used as it is. You may leave. If the adapter is left, it is possible to prevent the heat energy applied to the culture tank 1 during the culture work from escaping to the main body side.

The connecting member for connecting the lower plate 13 and the upper plate 14 can be plate-shaped in addition to the rods 19 and 19 as described above.

[0022]

[Effect of the device]

 Since the magnetic coupling adapter of the culture device of the present invention is constructed and operates as described above, the heat sterilization treatment of the inside of the culture tank and the culture solution can be reliably performed with a small amount of heat energy.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a vertical sectional view showing an assembled state.

FIG. 3 is a schematic vertical sectional view of a magnetic coupling of a culture device.

FIG. 4 is a vertical sectional view showing an example of a specific configuration.

[Explanation of reference numerals] 1 culture tank 2 lid 3 stirring blade 4 stirring shaft 5 driven side permanent magnet 6 motor 7 driving side permanent magnet 8 cylinder 9 bottom plate 10 convex portion 11 mounting portion 12 concave portion 13 lower plate 14 upper plate 15 convex portion 16 recesses 17 and 18 circular hole 19 rod 20 small circular hole 21 nut 22 support plate 23 bearing 24 transmission shaft 25 lower permanent magnet 26 upper permanent magnet

Claims (1)

[Scope of utility model registration request] 1. A main body having a mounting portion on an upper surface thereof, a bottomed cylindrical culture tank which can be mounted on the mounting portion, and a drive provided directly below the mounting portion inside the main body. Side permanent magnet,
It is applied to a magnetic coupling of a culture device provided with a driven side permanent magnet rotatably provided at the bottom of the culture tank, in a state where the upper surface of the placing portion and the lower surface of the culture tank are separated, An adapter for rotating the driven-side permanent magnet as the drive-side permanent magnet rotates, the lower plate being mountable on the upper surface of the mounting portion, and the upper plate provided in a state of being separated from the lower plate. Between the lower plate and the upper plate, an upper plate on which the culture tank can be placed, a connecting member that connects the upper plate and the lower plate, and has a cross-sectional area that is sufficiently smaller than both upper and lower plates. Rotatably, vertically mounted on a transmission shaft, fixed to the lower end of the transmission shaft, fixed to the lower permanent magnet facing the drive permanent magnet, and fixed to the upper end of the transmission shaft. Of the culture device, comprising the driven permanent magnet and the upper permanent magnet that can freely face each other. Gunetto coupling adapter.