JPS62218861A - Rotary-type multiflow-path specimen leading-in valve - Google Patents

Abstract

PURPOSE:To facilitate automatic operation, by switching a quantity-detecting pipe type specimen leading valve carrier from a flow path of specimen fluid for enabling continuous introduction of specimens and constructing economical and simple structure. CONSTITUTION:A quantity detecting pipes 1 are arranged on top of an outer- cylinder 2 with angular distances of 90 deg. and 4 pairs of specimen inlet ports 6, carrier inlet ports 7, carrier outlet ports 8, and specimen outlet ports 9 are connected to the bottom of a fixed plate 4 per each 90 deg.. 3 pairs of carrier passages 10 and a pair of specimen passages 11 and carrier bypass 12 are formed in the inside cylinder 3 with angular distances of 90 deg.. And, the inside cylinder is allowed to rotate per each 90 deg. angle. Thus, the carrier flows into the flow path from the carrier outlet port 8 after passing through the pipe 1 from the port 7. Next, the fluid specimen enters into the pipe 1 through the path 11. In the mean time, the carrier flows to the path passing through the carrier bypass 12. Next, a constant quantity of specimen inside the quantity detecting pipe is pushed by the carrier to the path. Thus, by rotating the inside cylinder to an angle of 90 deg., the specimen can be introduced into a plurality of paths continuously.

Description

Detailed Description of the Invention (a) Industrial Application This invention introduces a sample into a calibration tube by rotating two types of path conversion circuits, and then pushes it out with a carrier to continuously transfer the sample to a plurality of channels. This is a device that introduces The present invention is useful as a sample introduction valve in gas chromatography, liquid chromatography, and flow-based thin analysis (analysis using flow) in analytical chemistry, and can also be used as a flow path switching valve in chemical engineering. reactor.

(b) Conventional device In order to introduce samples into a plurality of flow channels using the currently used calibration tube type sample introduction valves, the same number of sample introduction valves as the number of flow channels is required. In order to automate the introduction of the sample, it is necessary to attach a drive unit to each sample introduction valve and to use a device to control them.

(c) Problems to be Solved by the Invention Accordingly, the carrier of the calibration tube type sample introduction valve and the passage of the sample fluid are switched to enable continuous introduction of the sample. In addition, the device is inexpensive, has a simple structure, and is easy to automate.

(d) Means for solving the problem We will describe a device that sequentially introduces sample fluid into four channels. Four calibration tubes (1) are arranged at 90 degree intervals on the upper part of the outer cylinder (2), and four sets of sample inlets (6) and a cartridge are placed on the lower part of the fixed plate (4). Connect the J-year population (7), carry outlet (8), and sample outlet (9) every 90 degrees. The inner cylinder (3) has three sets of carrier passages (10) and one set of sample passages (11).
and carrier sideways (12) are created every 90 degrees.

(e) Effects and Examples The flI1 mechanism will be explained with reference to FIG. 4. In the state of (A), the carrier flows from the inlet (7) through the detection M'fff (]) and from the carrier outlet (8) into the flow path. ing. Inside f3
The rotation of (3) brings about the state of (B), and the sample fluid enters the calibration tube (1) through the sample passage (11). During this time, the carrier continuously flows into the channel through the carrier side channel (12). Next, due to the rotation of the inner cylinder, it becomes (C), and the inspection Jlt
A fixed amount of sample in the tube is forced out by the carrier and introduced into the flow channel. The inner tube, outer tube, and fixed plate are divided into equal angles, and a calibration tube, sample inlet, etc. are placed in each.

By rotating the inner tube at each angle, it is possible to continuously introduce the sample into a large number of channels.

(・＼) Effects of the Invention According to the present invention, samples can be continuously introduced into a plurality of channels. Furthermore, even if you want to improve the flow rate, you can rotate the rotary shaft (5) with one drive unit to switch the passage, and the introduction time can be easily controlled.

(1.) Other implementation example tubes (2) Sample inlet, outlet, carrier inlet from the side,
If the outlet is connected as shown in FIG.

A similar effect can be obtained by creating a cylindrical passage as shown.

By using calibration tubes with equal volumes, equal volumes of samples can be introduced into multiple channels. Also.

When using calibration tubes with different capacities, different volumes of samples can be introduced into the respective channels.

Samples can be simultaneously introduced into a plurality of channels by arbitrarily combining the channel switching circuits in the inner cylinder (3).

[Brief explanation of drawings]

FIG. 1 is a perspective view of the present invention. 1 is a calibration tube 2 is the outer cylinder 3 is the inner cylinder 4 is a fixed plate 5 is the rotation axis 6 is the sample inlet A is the career population 8 is the carrier exit 9 is the sample outlet Figure 2 is a cross-sectional view at WX 10 is the carrier introduction passage 11 is the sample introduction passage 】2nd floor carrier side road Figure 3 is a cross-sectional view at YZ Figure 4 shows the operating mechanism. Figure 5 is a cross-sectional view when the sample inlet etc. are attached to the side of the outer cylinder. Margin below

Claims (1)

[Claims] A device that rotates different path conversion circuits to sequentially switch the flow of carrier and sample fluid, and uses a calibration tube to continuously introduce a fixed amount of sample into multiple flow paths.