JPH045006Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention relates to improvement of gas chromatograph equipment.

(b) Conventional technology In gas chromatographs, the same sample is analyzed using multiple types of columns, and multiple types of samples are analyzed using different columns, so separation methods with different internal packing materials are used. Analysis is performed by preparing multiple columns and using them interchangeably or by switching separation columns. However, sequentially removing and replacing the column itself hinders automation, and using a metal switching valve prevents on-column and on-detector operation in the case of a glass column, and depending on the sample, it may decompose and deteriorate, affecting the analysis results. There were cases.

(c) Purpose This idea was created in view of the above circumstances.
The object of the present invention is to provide a gas chromatograph device that can automatically switch columns without using a switching valve.

(d) Structure In this invention, a plurality of column boxes are movably provided for one heating box.The more detailed structure is that a heating mechanism is provided in the internal space, and the internal space is A heating box is opened on one side, a separation column is arranged in the inner space, and a vaporization chamber and a detector are provided in the part where both ends of the separation column extend outward, and the inner space is opened on one side. A plurality of column boxes are to be opened, and the plurality of column boxes are moved appropriately to selectively match one side of the open inner space of one of the column boxes with one side of the open inner space of the heating box. This gas chromatograph consists of a column box moving mechanism that moves the column box, and a control section that controls the operation of the device.

(e) Examples Examples of this invention will be described below in detail with reference to the drawings, but this invention is not limited to the following examples.

1 is a heating box, 2, 2, 2 is a column box, 3 is a moving mechanism for the column box, and 4 is a control section. The heating box 1 is provided in a fixed state, and a heating mechanism 6 is provided within the internal space 5. The heating mechanism 6 includes a heater 7 and a fan 8, and 9 is a motor for driving the fan 8. The interior space 5 is open on one side of the heating box 1.

The column box 2 also has an internal space 10, in which one or two separation columns 11, 11 are arranged, one for detection and the other for standard for comparison. belongs to. Vaporization chambers 12, 12 serving as sample injection sections and detectors 13, 13 are provided in the outwardly extending portions of both ends of each of the separation columns 11, 11, and the vaporization chambers 12, 12, A heater 14 for heating the detectors 13, 13 is provided. The respective column boxes 2, 2, 2 are connected together by connecting rods 15, 15 and are located on a straight line.

The column box moving mechanism 3 includes a motor 16 and a rotating threaded rod 1 to which the power of the motor 16 is transmitted at reduced speed.
7 and a rotating threaded rod 1 located on the opposite side of the motor 16.
It consists of a bearing body 18 that receives the seven ends and a movement guide section 19 that is continuously provided below the rotating threaded rod 17. The column box 2 is provided so that the rotary threaded rod 17 and further the movement guide portion 19 are fitted into a fitting groove portion 20 provided on the lower surface thereof. Although not shown, a screw that meshes with a screw of the rotating threaded rod 17 is provided on the upper inner surface of the fitting groove portion 20 .

The control unit 4 controls the overall operation of this gas chromatograph apparatus, adjusting the flow rate of the carrier in the separation column 11, adjusting the temperature of the heating mechanism 6, controlling the operation of the moving mechanism 3, and in addition, displaying the detection results. Electrical lines from the column box 2, motor 16, etc. are centrally connected.

The analysis operation and the operation of the moving mechanism in this apparatus will be explained.

To explain the analysis operation in FIG. 2, an analysis sample is injected from the vaporization chamber 12 while the heating mechanism 6 and heater 14 are ON, the sample reaches the separation column 11 and is separated, and after a predetermined period of time, the separated substance is detected by the detector. It reaches 13. At this point, the detector 13
The analysis results are displayed on the control unit 4. The separated substance is discharged from the detector 13 to the outside.

When the analysis in a predetermined column box 2 is completed, the motor 16 is operated in response to a command from the control section 4, and the rotary threaded rod 17 is rotated.
Along with the rotation, the column boxes 2, 2,
2 move together, and a predetermined column box 2 has one open surface of its internal space 10 facing one open surface of the internal space 5 of the heating box 1, and in this state, the next step similar to the above is carried out. An analysis is performed. If necessary, the separation column 11 in the column box 2 after the analysis has been completed can be replaced at this point.

In the above embodiment, there are three column boxes 2, and the movement of the column boxes 2 is performed by the moving mechanism 3.
Although the apparatus shown in FIG.

In this device, six column boxes 2 are configured to rotate on the same circumference around a shaft portion rotated by a motor.

With such a configuration, a large number of column boxes 2 can be arranged in a small space, and if the electric lines and gas lines from each column box 2 are gathered in the center, the arrangement can be easily performed. There is no confusion when rotating and moving Box 2.

(f) Effects This idea is structured as described above, so
By the operation of the moving mechanism, a predetermined column box is placed opposite the heating box, and analysis can be performed smoothly in sequence, and separation columns can be easily replaced even when not in use for analysis.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the gas chromatograph apparatus of this invention, FIG. 2 is a block diagram of the main parts thereof, and FIG. 3 is a plan view of another embodiment. DESCRIPTION OF SYMBOLS 1... Heating box, 2... Column box, 3... Column box moving mechanism, 4... Control section, 5... Internal space, 6... Heating mechanism, 10...
...Internal space, 11... Separation column, 12... Vaporization chamber, 13... Detector.

Claims (1)

[Claims for Utility Model Registration] 1. A heating box in which a heating mechanism is provided in the inner space and the inner space is open on one side, and a separation column is arranged in the inner space with both ends of the separation column facing outward. a plurality of column boxes in which a vaporization chamber and a detector are provided in a portion extending to the bottom, and the internal space is open on one side; A gas chromatograph apparatus comprising: a column box moving mechanism for aligning one open side of the inner space of the column box with one open side of the inner space of a heating box; and a control section for controlling the operation of the apparatus. 2. The gas chromatograph apparatus according to claim 1, wherein the column box is located on a straight line and is moved along the straight line by a moving mechanism. 3. The gas chromatograph apparatus according to claim 1, wherein the column boxes are located on the same circumference and are moved on the same circumference by a moving mechanism.