JPH04113073U - Reaction vessel cleaning equipment - Google Patents

Abstract

(57) [Summary] [Structure] As shown in FIG. 2(a), the cleaning nozzle 16 consists of a cleaning liquid suction nozzle 8 and a cleaning liquid injection nozzle 9. The operation of the cleaning nozzle 16 is controlled by a drive mechanism 17. The amount of movement of the cleaning nozzle to the overflow position is calculated in advance and set in the control unit 18 in advance.
When the cleaning nozzle 16 is raised, the drive mechanism 1 is activated by the control unit 18.
A control signal is output to 7 to stop the operation for a certain period of time, and the overflow of the liquid 4 is absorbed by the cleaning liquid suction nozzle 8. [Effect] The suction mechanism for suctioning overflowing cleaning liquid can be removed, simplifying the cleaning mechanism and reducing manufacturing costs.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a reaction vessel cleaning device for an automatic analyzer.

0002

[Conventional technology]

Conventional devices of this type have a cleaning nozzle as described in Japanese Utility Model Application Publication No. 61-70771. In this case, as shown in Fig. 3(a), there is a cleaning liquid overflow system that sucks the overflowing cleaning liquid. -Flow suction nozzle 8a and cleaning liquid injection nozzle that injects purified water as cleaning liquid It consisted of three nozzles: a cleaning liquid suction nozzle 9 and a cleaning liquid suction nozzle 8. Inside reaction vessel 2 Assuming that liquid 4 remains in Insert it into the reaction container 2 so that it is located near the bottom of the reaction container 2 that makes up the container, and wash it. The liquid 4 in the reaction container 2 is sucked up from the liquid suction nozzle 8. Liquid 4 is vacuum The inside of the trap bottle 11 is evacuated by the pump 12, and the solenoid valve 10 is opened. As soon as more water is sucked up, the solenoid valve 10 is closed. Next, as shown in Figure 3(c) The cleaning liquid is injected from the cleaning liquid injection nozzle 9. To inject the cleaning liquid, supply the cleaning water 13. The water is pumped in by the water pump 14 and injected by opening the solenoid valve 15. At the same time, Figure 3 As shown in (d), the overflow from the cleaning liquid overflow suction nozzle 8a siphon off the minutes. The overflow is handled by a vacuum pump in the same way as for the suction of liquid 4. 12 to create a vacuum inside the trap bottle 11a and open the solenoid valve 10a. , the cleaning nozzle is raised and returned to the position shown in FIG. 3(a). Said cleaning nozzle In this case, the cleaning liquid is injected and discharged multiple times in conjunction with the above-mentioned descending and ascending movements, and the reaction is completed. The container was being cleaned.

0003

[Problem that the idea aims to solve]

In the above conventional technology, the cleaning nozzle of the reaction vessel cleaning device discharges cleaning liquid inside the reaction vessel. As a suction mechanism, the cleaning water A barflow suction nozzle was installed. Therefore, the cleaning nozzle injects the cleaning liquid. It was equipped with three nozzles: a nozzle and a cleaning liquid suction nozzle, and three solenoid valves. So Therefore, as a reaction vessel cleaning device, the mechanism is complicated and the manufacturing cost is high. It was.

0004 The purpose of this invention is to solve the above problems, simplify the cleaning mechanism, and reduce manufacturing costs. An object of the present invention is to provide an improved reaction vessel cleaning device.

[0005]

[Means to solve the problem]

In order to achieve the above purpose, the present invention has a drive mechanism that raises the cleaning device in stages. It was designed to be provided.

[0006]

[Effect]

By providing a drive mechanism that raises the cleaning device in stages, the nozzle can be adjusted to its stopping position. Since the position can be controlled, the cleaning water suction nozzle can be By stopping the overflow at the position where it is sucked for a certain period of time, the amount of washing water is exceeded. - Can have the same function as a flow suction nozzle.

[0007]

【Example】

The present invention will be explained below using the embodiment shown in FIGS. 1 and 2. Figure 1 shows the present invention An example of a reaction vessel cleaning device is shown below.

[0008] In FIG. 1, a reaction line 1 includes a large number of reaction vessels 2 arranged in a circular shape. child Reaction line 1 is rotated by 1 rotation plus 1 container every cycle as shown by arrow 3. Make it stop. In addition, the absorbance of the liquid 4 in the reaction container 2 is measured by a photometer 5. be measured. When reaction line 1 is driven in this way, all reaction vessels of reaction line 1 2 must cross the optical axis 7 of the light emitted from the light source lamp 6 every cycle. become. The absorbance of the liquid 4 in each reaction vessel 2 is measured at the instant of this crossing. If so, it is possible to measure the liquid 4 in the entire reaction vessel 2 every cycle.

[0009] FIG. 2 is a diagram showing one embodiment of the cleaning nozzle, showing the cleaning liquid suction nozzle 8 and the cleaning liquid inlet. It consists of an inlet nozzle 9. To clean the reaction vessel 2, turn on the cleaning equipment when the reaction line 1 is stopped. The cleaning nozzle 16 is inserted into the reaction vessel 2 to suck up the liquid 4 after the reaction. This is done by injecting a cleaning solution. The cleaning nozzle 16 is driven by a drive mechanism 17. The operation is controlled. The control unit 18 includes in advance the flow to the overflow position. Calculate and set the amount of movement. As shown in FIG. 2(b), the cleaning nozzle 16 is driven by a drive mechanism. 17, the lowering operation is started so as to be located near the bottom of the reaction vessel 2. So Then, the liquid 4 in the reaction container 2 is sucked up through the suction nozzle 8. of reaction vessel 2 A suction nozzle 8 is inserted into the reaction vessel 2, and the liquid 4 is pumped by a vacuum pump 12. The inside of the trap bottle 11 is evacuated and the solenoid valve 10 is opened. , will be closed as soon as it is finished. Next, as shown in Figure 2(c), inject the cleaning liquid from the cleaning liquid injection nozzle. Inject clean solution. To inject the cleaning water, the cleaning water 13 is sent by the water supply pump 14 and the electromagnetic By opening the valve 15, the liquid is injected from the injection nozzle 9. Next, as shown in Figure 2(d) A control signal is output from the control unit 18 to the drive mechanism 17 with a preset movement amount. The operation is stopped for a certain period of time, and the overflow is sucked up by cleaning water nozzle 8. At this point, it is raised by the suction drive mechanism 17 and returned to the position shown in FIG. 2(a).

0010 As a result, the upward movement of the cleaning nozzle 16 is temporarily stopped. child The time is set in advance in the control unit 18 according to the purpose.

[0011] In this way, the cleaning nozzle 16 is raised in stages without being raised continuously. This makes it possible to eliminate the nozzle for overflow suction.

0012 By arranging multiple suction nozzles 8 and injection nozzles 9, multiple suction nozzles 8 and injection nozzles 9 are arranged. Cleaning becomes possible and sufficient cleaning processing is performed.

[0013]

[Effect of the idea]

According to the present invention explained above, this allows the cleaning water overflow suction nozzle to You can delete the cheats.

[0014] Also, as a result, solenoid valves related to the cleaning water overflow suction nozzle, etc. can be removed, simplifying the cleaning mechanism and reducing manufacturing costs. I can do it.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a reaction vessel cleaning device of the present invention.

FIG. 2 is a diagram showing an example of a cleaning nozzle.

FIG. 3 is an explanatory diagram of a conventional reaction vessel cleaning device.

[Explanation of symbols]

1... Reaction line, 2... Reaction container, 8... Suction nozzle,
9... Injection nozzle, 10... Solenoid valve, 11... Trap bottle, 12... Vacuum pump, 14... Water supply pump, 15... Solenoid valve.

Claims (1)

[Scope of utility model registration request] 1. An automatic analyzer comprising a reaction line whose movement is repeatedly stopped, a reaction vessel constituting the reaction line, a suction nozzle, and a washing water injection nozzle, and which washes the reaction vessel while repeating the suction and injection of washing water. A reaction vessel cleaning apparatus, characterized in that the reaction vessel cleaning apparatus is provided with a drive mechanism that raises the cleaning apparatus in stages.