Chromatograph carrier gas uninterrupted switching mechanism

Abstract

The utility model relates to the technical field of chromatographic instrument carrier gas supply, in particular to a chromatographic instrument carrier gas uninterrupted switching mechanism which comprises a main body box and hydraulic equipment, a temporary gas cylinder is provided with a gas supply branch pipe, the upper end of the main body box is provided with a gas supply main pipe in an embedded mode, and the hydraulic equipment is connected with the main pipe. The air supply main pipe extends into the main box and is provided with a first hose, the tail end of the first hose is provided with a connector, the edge of the lower end of the connector is provided with a rubber sealing layer, the side end of the first hose is provided with a second hose, the tail end of the second hose is provided with a hard pipe, and the hard pipe is provided with a second valve; the hydraulic equipment is installed at the upper end of the main box, a hydraulic rod of the hydraulic equipment extends into the main box and is provided with a fixing rod, and the tail end of the fixing rod is connected with the side end of the connector. The utility model has the advantages that the carrier gas bottle is simple and quick to replace, the temporary gas bottle is used for supplying gas, the carrier gas can be continuously replaced, and the stable operation condition of the chromatograph caused by the carrier gas is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of chromatograph carrier gas supply, in particular to a chromatograph carrier gas uninterrupted switching mechanism. Background Art

[0002] Chromatograph is a device for chromatographic separation and analysis. It includes injection system, detection system, recording and data processing system, temperature control system and mobile phase control system. Chromatograph has the characteristics of stability, sensitivity, versatility and high degree of automation. With the development of materials science and electronic technology and the continuous penetration and application of computer technology, various types of chromatographic instruments have been greatly improved in performance, structure and technical parameters, and have become laboratory instruments for clinical related disciplines.

[0003] The chromatograph needs to be continuously supplied with carrier gas during use. When the gas in the carrier gas cylinder is used up, the cylinder needs to be replaced. The operation of the chromatograph needs to be stopped when the cylinder is replaced. This process takes a long time and affects the operation of the chromatograph. The purity of argon gas cannot be detected normally. Therefore, the utility model provides a non-stop switching mechanism for the carrier gas of the chromatograph. Utility Model Content

[0004] The purpose of the utility model is to provide a chromatograph carrier gas uninterrupted switching mechanism, which has the advantages of simple and quick operation of replacing the carrier gas bottle, and using temporary gas cylinders for gas supply, so that the carrier gas can be replaced uninterruptedly, reducing the stable operation of the chromatograph caused by the carrier gas, and solving the problems raised by the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a chromatograph carrier gas uninterrupted switching mechanism, comprising a main body box and a hydraulic device, the bottom inner wall of the main body box is provided with symmetrically distributed positioning rings, carrier gas cylinders and temporary gas cylinders are respectively provided in the positioning rings, the temporary gas cylinders are provided with a gas supply branch pipe, the gas supply branch pipe extends out of the main body box, the upper end of the main body box is embedded with a gas supply main pipe, the gas supply main pipe extends to the main body box and a first hose is installed therein, a connector is installed at the end of the first hose, a rubber sealing layer is provided at the lower end edge of the connector, a second hose is installed at the side end of the first hose, a hard pipe is installed at the end of the second hose, a second valve is provided on the hard pipe, and the end of the hard pipe is connected to the gas supply branch pipe, the hydraulic device is installed at the upper end of the main body box, the hydraulic rod of the hydraulic device extends to the main body box and a fixing rod is installed therein, and the end of the fixing rod is connected to the side end of the connecting head.

[0006] When using the chromatograph carrier gas uninterrupted switching mechanism of the utility model,

[0007] The gas supply main is connected to the chromatograph. When the chromatograph is working, gas is supplied through the carrier gas cylinder. When the carrier gas cylinder needs to be replaced, the first valve on the gas supply branch pipe is opened, and the first valve on the gas supply main pipe is closed at the same time. Gas can be supplied through a temporary gas cylinder, and then the box door is opened. The hydraulic equipment is used to shorten the hydraulic rod, so that the connecting head can be raised. At this time, the carrier gas cylinder can be replaced, and the new carrier gas cylinder is replaced in the positioning ring. The hydraulic equipment is used to lower the connecting head again onto the gas outlet pipe of the carrier gas cylinder. Under the action of the rubber sealing layer, the connecting head and the gas outlet pipe of the carrier gas cylinder are sealed and connected. After that, the valve on the gas outlet pipe of the carrier gas cylinder is opened, and the carrier gas cylinder can be reused to provide carrier gas to the chromatograph. At the same time, the second valve can be opened to replenish the carrier gas in the temporary gas cylinder through the second hose.

[0008] Preferably, a base is installed at the lower end of the main box, and the base is provided with four bases distributed in an array with respect to the main box.

[0009] Preferably, the front end of the main box is equipped with symmetrically distributed box doors, and the front end of the box door is equipped with a handle.

[0010] Preferably, the gas supply branch pipe and the gas supply main pipe are both provided with an air pressure detector and a first valve, and a gas supply main pipe is installed at the ends of the gas supply branch pipe and the gas supply main pipe.

[0011] Preferably, an outlet pipe is provided at the upper end of the carrier gas cylinder, a valve is provided on the outlet pipe, the connector is pressed on the upper end of the outlet pipe, and the rubber sealing layer at the lower end of the connector is in contact with the upper end of the outlet pipe.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. When the carrier gas cylinder needs to be replaced, open the first valve on the gas supply branch pipe and close the first valve on the gas supply main pipe at the same time. Gas can be supplied through a temporary gas cylinder. By using a temporary gas cylinder for gas supply, the carrier gas can be replaced uninterruptedly, reducing the stable operation of the chromatograph caused by the carrier gas.

[0014] 2. When replacing the carrier gas cylinder, the hydraulic rod is shortened by the hydraulic equipment, which allows the connector to rise. The carrier gas cylinder can then be replaced, and the new carrier gas cylinder is replaced in the positioning ring. The hydraulic equipment is used to lower the connector onto the gas outlet pipe of the carrier gas cylinder. The rubber sealing layer seals the connector and the gas outlet pipe of the carrier gas cylinder, making the replacement of the carrier gas cylinder simple and quick, saving time in replacing the gas cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of the utility model;

[0016] Figure 2This is a front view structural schematic diagram of the utility model;

[0017] Figure 3 It is a cross-sectional structural schematic diagram of the utility model.

[0018] The reference numerals and names in the figures are as follows:

[0019] 101. Main box; 102. Box door; 103. Handle; 104. Base; 105. Positioning ring; 201. Gas supply branch pipe; 202. Gas supply main pipe; 203. Gas supply main pipe; 204. Air pressure detector; 205. First valve; 301. Carrier gas cylinder; 302. Temporary gas cylinder; 401. First hose; 402. Connector; 403. Fixing rod; 404. Second hose; 405. Second valve; 406. Hydraulic equipment. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example

[0022] See also Figures 1 to 3 The utility model provides an embodiment: a chromatograph carrier gas uninterrupted switching mechanism, comprising:

[0023] The main box 101 and the hydraulic equipment 406, the bottom inner wall of the main box 101 is provided with symmetrically distributed positioning rings 105, the positioning rings 105 are respectively provided with carrier gas cylinders 301 and temporary gas cylinders 302, the temporary gas cylinders 302 are installed with gas supply branch pipes 201, the gas supply branch pipes 201 extend out of the main box 101, the upper end of the main box 101 is embedded with a gas supply main pipe 202, the gas supply main pipe 202 extends to the main box 101 and is installed with a first hose 401, the end of the first hose 401 is installed There is a connecting head 402, and a rubber sealing layer is arranged at the lower edge of the connecting head 402. A second hose 404 is installed at the side end of the first hose 401, and a hard pipe is installed at the end of the second hose 404. A second valve 405 is arranged on the hard pipe, and the end of the hard pipe is connected to the air supply branch pipe 201. The hydraulic equipment 406 is installed at the upper end of the main box 101, and the hydraulic rod of the hydraulic equipment 406 extends to the main box 101 and a fixing rod 403 is installed therein, and the end of the fixing rod 403 is connected to the side end of the connecting head 402.

[0024] In this embodiment, the gas supply main pipe 203 is connected to the chromatograph, and the chromatograph is supplied with gas through the carrier gas cylinder 301 when working. When the carrier gas cylinder 301 needs to be replaced, the first valve 205 on the gas supply branch pipe 201 is opened, and the first valve 205 on the gas supply main pipe 202 is closed at the same time, and gas can be supplied through the temporary gas cylinder 302, and then the box door 102 is opened, and then the hydraulic device 406 is operated to shorten the hydraulic rod, so that the connector 402 can be raised, and then the carrier gas cylinder 301 can be replaced. The new carrier gas cylinder 301 is replaced in the positioning ring 105, and the hydraulic equipment 406 is used to lower the connector 402 onto the outlet pipe of the carrier gas cylinder 301 again. The rubber sealing layer makes the connector 402 and the outlet pipe of the carrier gas cylinder 301 sealed and connected. Then, the valve on the outlet pipe of the carrier gas cylinder 301 is opened, and the carrier gas cylinder 301 can be reused to provide carrier gas to the chromatograph. At the same time, the second valve 405 can be opened to replenish the carrier gas in the temporary gas cylinder 302 through the second hose 404.

[0025] Furthermore,

[0026] A base 104 is installed at the lower end of the main box 101, and a total of four bases 104 are arranged in an array with respect to the main box 101. The base 104 can support the main box 101.

[0027] Furthermore,

[0028] The front end of the main box 101 is provided with a symmetrically distributed box door 102, and the front end of the box door 102 is provided with a handle 103. The arrangement of the box door 102 can facilitate the replacement of the carrier gas cylinder 301.

[0029] Furthermore,

[0030] The gas supply branch pipe 201 and the gas supply main pipe 202 are both provided with a gas pressure detector 204 and a first valve 205, and a gas supply main pipe 203 is installed at the ends of the gas supply branch pipe 201 and the gas supply main pipe 202. The gas pressure detector 204 can detect the gas pressure in the two gas cylinders, so as to timely understand the gas volume in the two gas cylinders.

[0031] Furthermore,

[0032] The upper end of the carrier gas cylinder 301 is provided with an outlet pipe, and a valve is provided on the outlet pipe. The connector 402 is pressed on the upper end of the outlet pipe, and the rubber sealing layer at the lower end of the connector 402 contacts the upper end of the outlet pipe. The rubber sealing layer is provided for sealing connection between the connector 402 and the outlet pipe of the carrier gas cylinder 301.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A chromatograph carrier gas uninterrupted switching mechanism, comprising a main box (101) and a hydraulic device (406), characterized in that: The inner wall of the bottom end of the main box (101) is provided with symmetrically distributed positioning rings (105), and a carrier gas cylinder (301) and a temporary gas cylinder (302) are respectively arranged in the positioning rings (105). A gas supply branch pipe (201) is installed on the temporary gas cylinder (302), and the gas supply branch pipe (201) extends out of the main box (101). A gas supply main pipe (202) is embedded and installed at the upper end of the main box (101), and the gas supply main pipe (202) extends to the main box (101) and is installed with a first hose (401), and a connector (401) is installed at the end of the first hose (401). 2), a rubber sealing layer is provided at the lower edge of the connector (402), a second hose (404) is installed at the side end of the first hose (401), a hard pipe is installed at the end of the second hose (404), a second valve (405) is provided on the hard pipe, the end of the hard pipe is connected to the air supply branch pipe (201), the hydraulic device (406) is installed at the upper end of the main box (101), the hydraulic rod of the hydraulic device (406) extends to the main box (101) and a fixing rod (403) is installed, and the end of the fixing rod (403) is connected to the side end of the connector (402).

2. The chromatograph carrier gas uninterrupted switching mechanism according to claim 1, characterized in that: A base (104) is installed at the lower end of the main box (101), and a total of four bases (104) are arranged in an array with respect to the main box (101).

3. The chromatograph carrier gas uninterrupted switching mechanism according to claim 1, characterized in that: The front end of the main box (101) is equipped with box doors (102) that are symmetrically distributed, and the front end of the box doors (102) is equipped with a handle (103).

4. The chromatograph carrier gas uninterrupted switching mechanism according to claim 1, characterized in that: The gas supply branch pipe (201) and the gas supply main pipe (202) are both provided with an air pressure detector (204) and a first valve (205), and a gas supply main pipe (203) is installed at the ends of the gas supply branch pipe (201) and the gas supply main pipe (202).

5. The chromatograph carrier gas uninterrupted switching mechanism according to claim 1, characterized in that: The upper end of the carrier gas cylinder (301) is provided with an outlet pipe, and a valve is provided on the outlet pipe. The connector (402) is pressed on the upper end of the outlet pipe, and the rubber sealing layer at the lower end of the connector (402) is in contact with the upper end of the outlet pipe.

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