A gas supply device for a chromatograph

Abstract

The utility model relates to the technical field of chromatograph, concretely is a kind of chromatograph gas supply device, it includes: mounting plate, mounting plate is set up in rectangle;Connecting fixed structure, connecting fixed structure includes installation groove, installation groove is set up in the inside of mounting plate;Moving plate, moving plate is set up in the inside of installation groove;Vacuum pump, vacuum pump is fixedly installed in one side of moving plate;Suction cup, suction cup is fixedly connected in the output end of vacuum pump. Through the sliding fit of installation groove and moving plate, different size chromatograph can be adapted, and flexibility is high;Several evenly distributed vacuum pumps and suction cups can realize the stable adsorption fixation of device and chromatograph, avoid the separation of both;The cooperation of jackscrew and limiting groove can lock the position of moving plate, ensure reliable fixation;In this way, gas supply device and chromatograph do not need to be carried separately, greatly simplify carrying process, avoid the collision damage of both in carrying at the same time, guarantee use convenience and equipment safety.

Description

Technical Field

[0001] This utility model relates to the field of chromatography technology, specifically to a gas supply device for chromatography. Background Technology

[0002] A chromatograph is a precision instrument that utilizes the principle that "the different distribution coefficients of the components in a mixture between the stationary phase and the mobile phase" to separate complex mixtures and perform quantitative / qualitative analysis. Its core function is to break down mixed samples that are difficult to detect directly (such as drug components in blood, additives in food, and pollutants in the environment) into single pure components, and then use detectors to identify and calculate the content of each component. It is widely used in fields such as chemistry, medicine, food, environment, and life sciences.

[0003] For example, Chinese utility model patent with publication number "CN209542541U" discloses a device for providing a carrier gas source for a portable chromatograph. This utility model discloses a device for providing a carrier gas source for a portable chromatograph, including a vacuum pump, a gas source cylinder, and a carrier gas cylinder. A pressure reducing valve is installed at the gas source outlet of the gas source cylinder, and the pressure reducing valve is connected to the carrier gas cylinder via a transfer pipe. The vacuum pump is connected to the transfer pipe. A pressure gauge is installed on the carrier gas cylinder to detect its internal pressure. The volume of the carrier gas cylinder is 1-2L. This utility model allows carrier gas to be input into a small-volume carrier gas cylinder, making it easy to carry and lightweight, suitable for outdoor use. The overall design is simple and practical, with low manufacturing cost, and has a broad market prospect, making it easy to promote.

[0004] The aforementioned prior art has the following shortcomings in practical implementation: Although the utility model is convenient to carry with a small carrier gas cylinder, it cannot be fixed together with the chromatograph and needs to be carried separately, which makes it quite troublesome to carry. Utility Model Content

[0005] One of the technical problems that this application aims to solve is that existing devices for providing carrier gas sources for portable chromatographs, although convenient to carry via small carrier gas cylinders, cannot be fixed together with the chromatograph. When carrying them, the gas source device and the chromatograph must be carried separately, making the carrying process quite troublesome.

[0006] To address the aforementioned technical problems, embodiments of this application provide a chromatograph gas supply device, comprising:

[0007] Mounting plate, wherein the mounting plate is rectangular in shape;

[0008] A connecting and fixing structure includes a mounting groove, which is formed inside a mounting plate; a movable plate, which is disposed inside the mounting groove; a vacuum pump, which is fixedly mounted on one side of the movable plate; a suction cup, which is fixedly connected to the output end of the vacuum pump; and a set screw, which is disposed inside the movable plate. Limiting grooves are formed through both sides of the mounting plate, and the set screw passes through the limiting grooves and is disposed inside the movable plate.

[0009] In some embodiments, the movable plate is slidably connected to the mounting groove, and the set screw is threadedly connected to the movable plate.

[0010] In some embodiments, a plurality of vacuum pumps and suction cups are provided and are uniformly distributed in a straight line and fixed on one side of the movable plate, and the vacuum pumps and suction cups are disposed inside the mounting groove.

[0011] In some embodiments, auxiliary fixing mechanisms are provided on both sides of the mounting plate. The auxiliary fixing mechanisms include: a connecting frame, which is fixedly connected to the rear side of the mounting plate; an electric push rod, which is fixedly installed on one side of the connecting frame; a clamping plate, which is fixedly connected to one end of the electric push rod; and an anti-slip pad, which is fixedly connected to one side of the clamping plate and is made of rubber.

[0012] In some embodiments, a gas source structure is provided on the upper side of the mounting plate. The gas source structure includes a gas generator fixedly mounted on the upper side of the mounting plate, a gas source cylinder fixedly mounted on the upper side of the mounting plate, a carrier gas cylinder also fixedly mounted on the upper side of the mounting plate, a pressure regulating valve mounted on the carrier gas cylinder, and a pressure gauge mounted on the pressure regulating valve.

[0013] In some embodiments, the gas source cylinder and the carrier gas cylinder are arranged on both sides of the gas generator, the output end of the gas generator is connected to the gas source cylinder through a pipeline, and the gas source cylinder and the carrier gas cylinder are connected through a pipeline.

[0014] In some embodiments, a stabilizing structure is provided on the lower side of the mounting plate, the stabilizing structure including a rubber pad fixed to the lower side of the mounting plate and a plurality of anti-slip grooves formed on the lower surface of the rubber pad.

[0015] This utility model has at least the following beneficial effects:

[0016] The sliding engagement between the mounting slot 101 and the moving plate 102 allows for adaptation to chromatographs of different sizes, offering high flexibility. Several evenly distributed vacuum pumps 103 and suction cups 104 ensure stable adsorption and fixation of the device and the chromatograph, preventing separation. The engagement between the top screw 105 and the limiting groove 106 locks the position of the moving plate 102, ensuring reliable fixation. Thus, there is no need to carry the gas source device and the chromatograph separately, greatly simplifying the carrying process and preventing collision damage during transport, ensuring ease of use and equipment safety. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the first overall structure of this utility model from the front view;

[0018] Figure 2 This is a schematic diagram of the second overall structure of this utility model from the front view;

[0019] Figure 3 This is a side view of the overall structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the first side view section of the present invention;

[0021] Figure 5 This is a schematic diagram of the second side view of the present invention.

[0022] In the diagram: 1. Mounting plate; 101. Mounting groove; 102. Moving plate; 103. Vacuum pump; 104. Suction cup; 105. Ejector screw; 106. Limiting groove; 201. Connecting frame; 202. Electric push rod; 203. Clamping plate; 204. Anti-slip pad; 301. Gas generator; 302. Gas source cylinder; 303. Carrier gas cylinder; 304. Pressure regulating valve; 305. Pressure gauge; 401. Rubber pad; 402. Anti-slip groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-5 This utility model provides a technical solution: a gas supply device for a chromatograph, comprising:

[0025] Mounting plate 1, mounting plate 1 is rectangular in shape;

[0026] The connection and fixing structure includes a mounting groove 101, which is formed inside the mounting plate 1; a movable plate 102, which is disposed inside the mounting groove 101; a vacuum pump 103, which is fixedly mounted on one side of the movable plate 102; a suction cup 104, which is fixedly connected to the output end of the vacuum pump 103; and a set screw 105, which is disposed inside the movable plate 102. Limiting grooves 106 are formed through both sides of the mounting plate 1, and the set screw 105 passes through the limiting grooves 106 and is disposed inside the movable plate 102. The movable plate 102 is slidably connected to the mounting groove 101, and the set screw 105 is threadedly connected to the movable plate 102. Several vacuum pumps 103 and suction cups 104 are provided and are evenly distributed in a straight line and fixed on one side of the movable plate 102. The vacuum pumps 103 and suction cups 104 are disposed inside the mounting groove 101.

[0027] Through the above technical solution, by opening an installation groove 101 inside the rectangular mounting plate 1 to provide a sliding track for the moving plate 102, the moving plate 102 can be flexibly adjusted along the installation groove 101 to adapt to the fixing requirements of chromatographs of different sizes. Several vacuum pumps 103 and suction cups 104 are fixed in a straight line and evenly distributed on one side of the moving plate 102 and hidden in the installation groove 101. This ensures the uniformity of force during adsorption and fixing and avoids collision damage caused by exposed structure. At the same time, the set screw 105 passing through the limiting groove 106 is threadedly connected to the moving plate 102. When the moving plate 102 is adjusted to the target position, tightening the set screw 105 can lock the position. With the vacuum pump 103 drawing a vacuum, the suction cup 104 generates negative pressure, realizing the initial stable fixing of the device and the chromatograph, solving the problem that traditional gas source devices cannot be fixed to the chromatograph.

[0028] Please see Figures 1-5 The mounting plate 1 is provided with auxiliary fixing mechanisms on both sides. The auxiliary fixing mechanisms include: a connecting frame 201, which is fixedly connected to the rear side of the mounting plate 1; an electric push rod 202, which is fixedly installed on one side of the connecting frame 201; a clamping plate 203, which is fixedly connected to one end of the electric push rod 202; and an anti-slip pad 204, which is fixedly connected to one side of the clamping plate 203 and is made of rubber.

[0029] Through the above technical solution, a connecting frame 201 is fixed on the rear side of the mounting plate 1, and an electric push rod 202 is installed with the connecting frame 201 as a support. The telescopic function of the electric push rod 202 is used to push the clamping plate 203 to move, and the clamping width can be adaptively adjusted according to the side wall size of the chromatograph. A rubber anti-slip pad 204 is fixed on one side of the clamping plate 203. The rubber material can not only increase the friction with the side wall of the chromatograph and prevent the device from sliding relative to the chromatograph, but also play a buffering role during the clamping process to avoid rigid contact damage to the chromatograph shell. Together with the connecting and fixing structure, it forms a "adsorption + clamping" dual fixation, which further improves the fixation stability of the device and the chromatograph, and is especially suitable for bumpy scenarios during the carrying process.

[0030] Please see Figures 1-5 A gas source structure is provided on the upper side of the mounting plate 1. The gas source structure includes a gas generator 301 fixedly mounted on the upper side of the mounting plate 1, a gas source cylinder 302 fixedly mounted on the upper side of the mounting plate 1, a carrier gas cylinder 303 also fixedly mounted on the upper side of the mounting plate 1, a pressure regulating valve 304 mounted on the carrier gas cylinder 303, and a pressure gauge 305 mounted on the pressure regulating valve 304. The gas source cylinder 302 and the carrier gas cylinder 303 are located on both sides of the gas generator 301. The output end of the gas generator 301 is connected to the gas source cylinder 302 through a pipe, and the gas source cylinder 302 is connected to the carrier gas cylinder 303 through a pipe.

[0031] Through the above technical solution, a gas generator 301, a gas source cylinder 302, and a carrier gas cylinder 303 are rationally arranged on the upper side of the mounting plate 1. The gas source cylinder 302 and the carrier gas cylinder 303 are respectively set on both sides of the gas generator 301, shortening the gas delivery path and reducing pressure loss. The output end of the gas generator 301 is connected to the gas source cylinder 302 through a pipeline, and the gas source cylinder 302 is then connected to the carrier gas cylinder 303 to realize the preparation, temporary storage, and stable pressure delivery of gas. A pressure regulating valve 304 and a pressure gauge 305 are installed on the carrier gas cylinder 303. The operator can monitor the output gas pressure in real time through the pressure gauge 305 and accurately adjust it to the pressure value required by the chromatograph through the pressure regulating valve 304, ensuring the stability and quality of the gas supply and meeting the pressure requirements of the chromatograph for carrier gas or auxiliary gas.

[0032] Please see Figures 1-5 The mounting plate 1 has a stabilizing structure on its lower side, which includes a rubber pad 401 fixed to the lower side of the mounting plate 1 and several anti-slip grooves 402 formed on the lower surface of the rubber pad 401.

[0033] Through the above technical solution, a rubber pad 401 is fixed on the lower side of the mounting plate 1. The rubber material itself has good anti-slip properties, which can increase the friction between the device and the placement surface, such as a laboratory table or outdoor operating table. At the same time, several anti-slip grooves 402 are opened on the lower surface of the rubber pad 401 to further enhance the anti-slip effect and effectively prevent the device from sliding due to vibration of the chromatograph or external force during use. In addition, the rubber pad 401 can also play a shock absorption role, reducing the impact of external vibration on the gas source structure on the upper side of the mounting plate 1, ensuring the stability of gas source delivery, and ensuring that the chromatograph analysis process is not disturbed by device shaking.

[0034] All electrical devices in this invention are powered by an external power source;

[0035] Working principle and usage procedure: First, the device is initially fixed to the chromatograph through the connection and fixing structure: According to the position to be fixed at the bottom of the chromatograph, loosen the set screw 105 and push the moving plate 102 to slide along the mounting groove 101 (the set screw 105 moves synchronously along the limiting groove 106) until the suction cup 104 is aligned with the flat area at the bottom of the chromatograph; then tighten the set screw 105 to fix the position of the moving plate 102, start the vacuum pump 103, the vacuum pump 103 removes the air between the suction cup 104 and the contact surface of the chromatograph, so that the suction cup 104 generates negative pressure and firmly adsorbs onto the chromatograph, completing the initial fixation.

[0036] Next, the auxiliary fixing mechanism further enhances the fixing effect: the electric push rod 202 on the connecting frame 201 is activated, and the electric push rod 202 pushes the clamping plate 203 to move to both sides of the chromatograph until the anti-slip pad 204 is tightly attached to the side wall of the chromatograph; the rubber anti-slip pad 204 increases the friction with the chromatograph and avoids damage to the chromatograph shell during clamping. Through the dual fixing of "adsorption + clamping", it is ensured that the device and the chromatograph will not shift relative to each other when carried or used.

[0037] Meanwhile, the gas source structure continuously supplies qualified gas to the chromatograph: the gas generator 301 prepares the gas required by the chromatograph (such as nitrogen, hydrogen, etc.), and transports the gas to the gas source cylinder 302 for temporary storage through pipelines; the gas source cylinder 302 then transports the gas to the carrier gas cylinder 303, and the operator adjusts the pressure of the gas output from the carrier gas cylinder 303 through the pressure regulating valve 304, and monitors the pressure value in real time through the pressure gauge 305 to ensure that the output gas pressure meets the working requirements of the chromatograph, and finally delivers qualified gas to the chromatograph to meet its carrier gas or auxiliary gas requirements.

[0038] In addition, during the operation of the device, the stable structure ensures the overall stability: the rubber pad 401 on the lower side of the mounting plate 1 increases the friction between the device and the placement surface (such as the experimental table or outdoor operating table), and the anti-slip groove 402 on the lower surface of the rubber pad 401 further enhances the anti-slip effect, preventing the device from sliding due to vibration or external force during use, and ensuring a stable gas supply and a reliable fixing structure.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gas supply device for a chromatograph, characterized in that, include: Mounting plate (1), wherein the mounting plate (1) is rectangular; A connecting and fixing structure is provided, the connecting and fixing structure including a mounting groove (101), the mounting groove (101) being formed inside the mounting plate (1); A movable plate (102) is disposed inside the mounting slot (101); A vacuum pump (103) is fixedly installed on one side of a movable plate (102); A suction cup (104) is fixedly connected to the output end of a vacuum pump (103); A set screw (105) is disposed inside the movable plate (102). Limiting grooves (106) are opened through both sides of the mounting plate (1). The set screw (105) passes through the limiting grooves (106) and is disposed inside the movable plate (102).

2. The gas supply device for a chromatograph according to claim 1, characterized in that: The movable plate (102) is slidably connected to the mounting groove (101), and the set screw (105) is threadedly connected to the movable plate (102).

3. The gas supply device for a chromatograph according to claim 1, characterized in that: The vacuum pump (103) and suction cup (104) are provided in several units and are evenly distributed in a straight line and fixed on one side of the moving plate (102). The vacuum pump (103) and suction cup (104) are located inside the mounting groove (101).

4. The chromatograph gas supply device according to claim 1, characterized in that, The mounting plate (1) is provided with auxiliary fixing mechanisms on both sides, the auxiliary fixing mechanisms including: A connecting bracket (201) is fixedly connected to the rear side of the mounting plate (1); An electric push rod (202) is fixedly installed on one side of the connecting frame (201); A clamping plate (203) is fixedly connected to one end of an electric push rod (202); Anti-slip pad (204), the anti-slip pad (204) is fixedly connected to one side of the clamping plate (203) and the anti-slip pad (204) is made of rubber.

5. The gas supply device for a chromatograph according to claim 1, characterized in that: The upper side of the mounting plate (1) is provided with a gas source structure, which includes a gas generator (301) fixedly installed on the upper side of the mounting plate (1), a gas source cylinder (302) fixedly installed on the upper side of the mounting plate (1), a carrier gas cylinder (303) also fixedly installed on the upper side of the mounting plate (1), a pressure regulating valve (304) installed on the carrier gas cylinder (303), and a pressure gauge (305) installed on the pressure regulating valve (304).

6. The gas supply device for a chromatograph according to claim 5, characterized in that: The gas source cylinder (302) and the carrier gas cylinder (303) are arranged on both sides of the gas generator (301). The output end of the gas generator (301) is connected to the gas source cylinder (302) through a pipe, and the gas source cylinder (302) and the carrier gas cylinder (303) are connected through a pipe.

7. The chromatograph gas supply device according to claim 1, characterized in that: The mounting plate (1) is provided with a stabilizing structure on its lower side. The stabilizing structure includes a rubber pad (401) fixed on the lower side of the mounting plate (1) and a number of anti-slip grooves (402) formed on the lower surface of the rubber pad (401).

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