JPS5813742Y2 - Dispensing nozzle cleaning device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cleaning device for a dispensing nozzle used in medical analysis equipment.

Normally, in biochemical analysis instruments, a dispensing device is used to dispense reagents into the sample container after serum is placed in the sample container. Injection is performed, but this dispensing nozzle is used for reagents,
If it is placed in serum, it becomes contaminated, and the specimen for subsequent testing must be washed.

The present invention provides a cleaning device for the above-mentioned dispensing nozzle,
The present invention will be described below with reference to an embodiment shown in the drawings.

Reference numeral 1 is a cleaning tank located within the movement range of the dispensing nozzle and used to temporarily store cleaning liquid during cleaning.A rotary pump 2. A container 3 storing cleaning liquid is provided, and a flexible pipe 5 is connected from the container 3 through one side of the rotary pump 2 to the nozzle 4 of the cleaning tank 1, and from the drain port 6 of the cleaning tank 1 enclosed in the housing, the rotary pump is connected to the rotary pump. A flexible pipe 8 is provided that passes through the other side of the pump 2 and communicates with a drain pipe 7.

In the above configuration, the rotary pump 2 has a plurality of rollers 11 arranged on a rotary plate 10 linked to a drive motor 9,
An arc-shaped suppression plate 12 is disposed on the peripheral edge of the rotary plate 10 and contacts the roller 11. Rotation of the drive motor 9 causes the flexible pipes 5 and 8 to be moved between the pressure plate 12 and the roller 11. and as the roller 11 moves, the pipes 5 and 8
The liquid inside can be transferred in the direction of rotation.

Further, the cleaning tank 1 includes an electrode 13 for detecting the liquid level.
The electrode 13 is connected to a necessary control circuit for emergency stop of the motor 9.

In the present invention, with the above-described configuration, when cleaning a dispensing nozzle (not shown), the nozzle is moved onto the cleaning tank 1, its end is immersed in the cleaning tank 1, and the dispensing nozzle is moved to the cleaning tank 1, and the dispensing nozzle is moved to the cleaning tank 1, and the dispensing nozzle (not shown) is moved to the cleaning tank 1. When the rotary pump 2 is rotated, the cleaning liquid in the container 3 is injected into the cleaning tank 1 from the nozzle 4 through the pipe 5, and on the other hand, the water contaminated by cleaning passes through the drain port 6 of the cleaning tank 1 through the pipe 8. , is discharged to the outside from the drain pipe 7.

In this way, the cleaning liquid can be sequentially supplied into the cleaning tank 1 and the dirty water can be discharged at the same time to instantly clean the dispensing nozzle.

On the other hand, during the above-described cleaning, if a malfunction such as a break occurs on the drain side, the liquid level in the cleaning tank 1 rises and there is a risk of water overflowing into the machine.

In such a case, the rise in the liquid level can be quickly detected by the electrode 13, and the drive motor 9 can be brought to an emergency stop based on the detection signal, thereby preventing water from overflowing.

In the past, the above Romery pump 2 integrated water supply and drainage, but if the number or diameter of the pipes 8 on the drainage side were increased, the capacity of the drainage side would be increased more than that of the water supply side, and flooding would occur. Similarly, the pump can be divided into two sections, one for water supply and one for drainage, and the amount of infusion fluid for each can be changed to increase the amount of drainage.

[Brief explanation of the drawing]

The drawing is a perspective view of essential parts of a dispensing nozzle cleaning device showing an embodiment of the present invention. In the figure, 1 is a cleaning tank, 2 is a rotary pump, 3 is a container, 4 is a nozzle, 5 and 8 are pipes, 9 is a drive motor, and 7 is a drain pipe.

Claims (2)

[Scope of utility model registration request] (1) A movable dispensing nozzle equipped with a cleaning tank for temporarily storing cleaning liquid for the dispensing nozzle, a water supply pump for supplying the cleaning liquid to the cleaning tank, and discharging the cleaning liquid. A dispensing nozzle characterized by being provided with a drainage pump for cleaning, a liquid level detection means for detecting the liquid level of cleaning liquid in the cleaning tank, and a water supply emergency stop circuit linked to the liquid level detection means. cleaning equipment. (2) The dispensing nozzle cleaning device according to claim 1, which is characterized in that two pumps are used and the amount of water discharged is greater than the amount of water supplied.