JPS6023010Y2 - Liquid feed distributor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a distributor for a density gradient apparatus that simultaneously prepares a density gradient liquid in a plurality of centrifugation tubes when performing density gradient centrifugation.

Conventional distributors use pins to press together multiple branched tubes, leaving only one portion open.

Only one tube is open, but the other tubes are always pressed.

The device is stored in this state even when not in use.

As a result, the tube is permanently deformed under pressure.
This had the drawback that the pipe was blocked, the resistance of the pipe became too strong, and the liquid was not distributed in equal amounts.

By pressing the tube only when in use and releasing the tube when not in use, the tube will not be permanently deformed, will last a long time, and no distribution errors will occur.

The present invention eliminates the above-mentioned drawbacks of the prior art, eliminates the need to press the tube when not in use, and makes it easier to operate.

In the present invention, in order to release the pins that are pressed during use when not in use, the holder holding the multiple pins is moved upward to prevent the waist pins from coming into contact with the tube.

We devised a way to use a lever to move the holder up and down.

An embodiment of the present invention will be described with reference to the drawings.

A shaft 2 is attached to a shaft holder 1 via a bearing 3.

The shaft 2 has a cutting edge 4 at one location, and one location of the pin 5 is designed not to come into contact with the tube 6.

A tapered part 7 is provided at the upper part of the shaft 2, and the pin 5 moves in and out by moving the pin holder 8 up and down.

Put the multiple pins 5 into the pin holder 8 and then insert them into the tube 6.
, and adjust the clearance with adjustment screw 9.

The adjustment is such that the tube 6 is completely closed in the position where the cutting edge 4 of the shaft 2 is not present.

A plurality of tubes 6 are connected to a branch part 10.

The shaft holder 1 and pin holder 8 have a bin guide 11 that is movable in the vertical direction, and are prevented from rotating.

The pin holder 8 is moved up and down by moving the lever 12 up and down.

With the above configuration, the pin holder 8 can be moved upward when not in use, so that the tube 6 is released from being pressed, and deformation of the tube can be prevented.

The pin holder 8 is moved downward only when in use.

As a modification of the present invention, the same effect can be obtained by moving the shaft 2 up and down.

According to the present invention, since the pressure between the pin and the tube is released when the tube is not in use, permanent deformation of the tube can be prevented and the life of the tube can be extended.

In addition, since the conduit resistance can be kept constant, distribution errors can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional plan view of a distributor according to the present invention, and FIG. 2 is a vertical cross-sectional front view thereof. 1 is the shaft holder, 2 is the shaft, 3 is the bearing,
4 is the cutting edge, 5 is the pin, 6 is the tube, 7 is the tapered part, 8
1 is a pin holder, 9 is an adjustment screw, 10 is a branch portion, 11 is a bin guide, and 12 is a lever.

Claims (1)

[Scope of utility model registration request] The solution sent from one discharge port is branched into multiple tubes, each tube is pressed by a pin held in a pin holder, and the pins are released at one location one by one using a rotating shaft held in a shaft holder. In the mechanism for dispensing equal amounts, the pin holder is slidably fitted to the shaft holder, and when not in use, the tube press is released to remove external force applied to the tube, and the tube is pressed only when in use. Liquid feed distributor.