JPS63265169A - Reaction-tube washing apparatus - Google Patents

Abstract

PURPOSE:To enhance washing force with physical force and dissolving power of water and to suppress the deposition of contamination on the bottom surface of a reaction tube, by forming spiral belts of water on the wall surface of the reaction tube. CONSTITUTION:A washing nozzle 10 has four injecting ports 12 in a cross shape in the slanted lower direction from the side surface and a sucking port 13 at the tip end. This arrangement is similar to the vanes of a windmill when it is viewed from the upper side. Washing water, which is discharged through the injecting ports 12, flows on the side wall of the reaction tube 2 in a spiral pattern. The water is sucked through the sucking port 13 at the bottom surface, and water streams are formed. The entire wall surface of the reaction tube 2 is uniformly washed by the four spiral belts of washing water from the four injecting ports 12. Washing is performed by utilizing the water streams, which are yielded by the relationship between the positions of the washing-water injecting ports and the sucking port.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention involves reacting a liquid sample such as serum or urine with a reagent, automatically measuring the absorbance of the reaction solution, and measuring the absorbance. The present invention relates to a reaction tube cleaning device applied to a sample testing device that calculates and displays concentrations.

(Prior art) In a conventional specimen testing apparatus, when cleaning a reaction tube as shown in FIG. tube 2
After filling with cleaning water, another suction nozzle 4 sucked the cleaning water through its suction port 5. However, the above-mentioned methods still have insufficient cleaning effects in some cases, so it is desired to establish a more effective cleaning method.

(Problems to be Solved by the Invention) In such a cleaning device that cleans the reaction tube by filling the reaction tube with cleaning water and suctioning it, in order to increase the cleaning effect, it is necessary to increase the number of times of cleaning. There are various methods, such as increasing the amount of water, but it is necessary to solve problems such as the cleaning time and the complexity of the mechanism, resulting in high manufacturing costs.

[Structure of the invention] (Means for solving the problem) The present invention satisfies the above-mentioned limitations such as time, etc.
An object of the present invention is to provide a reaction tube cleaning device that can enhance the cleaning effect. In order to achieve the above objective, the cleaning nozzle is equipped with a cleaning liquid blowout part and a suction part, so that the cleaning water that has uniformly passed through the inner wall of the reaction tube is sucked in at the bottom of the reaction tube, so that it can flow smoothly inside the reaction tube. Achieve effective cleaning by creating a flow of water.

(Function) The cleaning water blown out from the outlet provided in the cleaning nozzle spirals down the wall of the reaction tube, and then the cleaning water that flows down to the bottom of the reaction tube is sucked through the suction port provided separately in the cleaning nozzle. It is something that will be done. By forming such a flow of washing water, the entire inner wall of the reaction tube is uniformly washed with the washing water.

(Example) Next, one embodiment of the present invention will be described.

FIG. 1 shows the structure of an embodiment of the reaction tube cleaning nozzle of the present invention. The cleaning nozzle 10 is arranged in a cross pattern diagonally downward from the side.
It has two blow-off ports 12 and a suction port 13 at the tip. Its arrangement, when viewed from above, resembles that of a pinwheel's wings.

FIG. 2 is a diagram structurally showing a cleaning state when using the reaction tube cleaning nozzle of the present invention. Washing water blown out from the outlet 12 spirals along the wall of the reaction tube 2 and is sucked from the suction port 13 at the bottom, forming a water flow.

The entire wall surface of the reaction tube 2 is uniformly washed away by four spiral bands of washing water from the four outlets 12. Cleaning is performed using the flow of water generated from the relationship between the position of the cleaning water outlet and the suction port.

FIG. 3 shows the structure of another embodiment of the reaction tube cleaning nozzle of the present invention. The difference from the one in FIG. 2 is that it has a sprinkler-like structure in which a portion 15 constituting the water jetting portion rotates due to the force of water jetting out from the protruding water jetting portion 14.

FIG. 4 is a diagram schematically showing a cleaning state when the reaction tube cleaning nozzle shown in FIG. 3 is used.

According to the cleaning nozzle shown in FIG. 4, countless bands of cleaning water flow on the inner wall of the reaction tube 2 due to the rotating blow-off section 15. The cleaning effect can be further enhanced by this countless bands of cleaning water.

[Effects of the Invention] As described in detail above, according to the present invention, by creating a spiral band of water on the wall surface of the reaction tube, the cleaning power due to physical force and the dissolving power of water is increased, and the suction part As a result of the rapid suction of water, there is no boiling of water, ensuring a steady flow, suppressing the deposition of dirt on the bottom of the reaction tube, and increasing the cleaning effect.

Furthermore, contamination caused by cleaning can be quickly suctioned out, which improves the contamination.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the main structure of the reaction tube cleaning nozzle according to the present invention, and FIG. 2 is a diagram showing the functions of the reaction tube cleaning nozzle according to the present invention shown in FIG. FIG. 3 is a diagram schematically showing the discharge of cleaning liquid from the inlet and the suction state of cleaning water at the suction port. FIG. 3 is a diagram showing the configuration of another embodiment of the reaction tube cleaning nozzle according to the present invention. FIG. , 3rd
FIG. 5 schematically shows the flow of cleaning water through the reaction tube cleaning nozzle shown in the figure, and FIG. 5 is a diagram showing the configuration of a conventional reaction tube cleaning nozzle. 10...Cleaning nozzle body 12.14...Cleaning liquid blowout port 13...Cleaning liquid suction port 15...Cleaning liquid blowout rotating body

Claims (1)

[Claims] In order to clean the reaction tube, a nozzle body is movably held in the reaction tube, an opening connected to a predetermined drive source for discharging cleaning liquid, and a suction part near the tip of the nozzle body. A reaction tube cleaning device characterized in that: