Sample introduction mechanism of ion chromatograph

Abstract

The utility model belongs to the technical field of ion chromatographs, and particularly relates to a sample injection mechanism of an ion chromatograph, which comprises a base and a motor, an electric lifting rod is arranged at the top of the base, a lifting platform is arranged at one end of the electric lifting rod, an infusion pump is arranged at the top of the lifting platform, and the infusion pump is connected with the motor. The right side of the infusion pump is connected with a sampling pipe, the left side of the infusion pump is connected with a sample introduction pipe, and the motor is arranged at the bottom of the base. In the process that the ion chromatograph uses the sample introduction mechanism, the sample introduction test tube is conveniently shaken, so that sample liquid in the test tube is uniformly mixed to prevent precipitation; and uniform sample injection can be facilitated in a sample injection process, so that the accuracy of a detection result is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ion chromatographs, in particular to a sample injection mechanism of an ion chromatograph. Background Art

[0002] Ion chromatography is a type of high performance liquid chromatography, so it is also called high performance ion chromatography or modern ion chromatography. It is different from traditional ion exchange column chromatography mainly in that the resin has a high degree of cross-linking and a low exchange capacity. Among them, the injection mechanism of the ion chromatograph is an auxiliary equipment of the ion chromatograph.

[0003] In the existing technology, during the use of the sampling mechanism of the ion chromatograph, a liquid pump is used to transport the sample in the test tube into the ion chromatograph. However, the sample liquid in the test tube is prone to precipitation when placed statically, resulting in uneven sampling during the sampling process, thereby affecting the accuracy of the test results. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] In view of the above problems and / or the problems existing in the existing ion chromatographs, the present utility model is proposed.

[0006] Therefore, the purpose of the present invention is to provide an injection mechanism for an ion chromatograph, which can facilitate shaking the injection tube during the use of the injection mechanism of the ion chromatograph, so that the sample liquid in the test tube is mixed evenly to prevent precipitation, and facilitate uniform injection during the injection process, thereby improving the accuracy of the test results.

[0007] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] The top of the base is provided with an electric lifting rod, one end of the electric lifting rod is provided with a lifting platform, the top of the lifting platform is provided with a liquid pump, the right side of the liquid pump is connected to the sampling tube, the left side of the liquid pump is connected to the sampling tube, the motor is provided at the bottom of the base, the rotating shaft of the motor is connected to a rotating rod, the rotating rod is embedded in the base, one end of the rotating rod is connected to a turntable, the turntable is provided at the top of the base, a positioning cylinder and an air pump are provided on the top of the turntable, the side wall of the air pump is provided with an inflation tube, the inner wall of the positioning cylinder is provided with an air cushion, and one end of the inflation tube is connected to the air cushion

[0009] As a preferred solution of the sampling mechanism of an ion chromatograph described in the utility model, the side wall of the electric lifting rod is movably connected with a sliding sleeve, the side wall of the sliding sleeve is provided with a sliding rod, one end of the sliding rod is provided with a cover plate, the cover plate is provided with a through hole corresponding to the sampling tube, and one end of the sampling tube is embedded and installed in the through hole.

[0010] As a preferred solution of the sample injection mechanism of the ion chromatograph described in the present invention, a fixed block is provided on the side wall of the lifting platform, a positioning hole is provided on the fixed block, and the sampling tube passes through the fixed block through the positioning hole.

[0011] As a preferred solution of the sample injection mechanism of the ion chromatograph described in the present invention, an exhaust pipe is provided on the side wall of the air cushion, and a pipe plug is provided at the pipe mouth of the exhaust pipe.

[0012] As a preferred solution of the sample injection mechanism of the ion chromatograph described in the utility model, the air cushion is an annular air cushion.

[0013] As a preferred solution of the sample injection mechanism of the ion chromatograph described in the present invention, a control panel is provided on the top of the base, and the control panel is electrically connected to the motor.

[0014] As a preferred solution of the sample injection mechanism of the ion chromatograph described in the present invention, a bracket is provided at the bottom of the base, and a rubber pad is provided at the bottom of the bracket.

[0015] Compared with the prior art: In the present application, 1. the height of the sampling tube is adjusted conveniently by an electric lifting rod, so that one end of the sampling tube can be inserted into the sampling tube, the sample liquid in the sampling tube can be extracted by the liquid extraction pump, and the sample liquid can be transported to the ion chromatograph through the sampling tube for convenient sampling, the rotating rod can be driven to rotate by a motor, thereby driving the positioning cylinder on the turntable to rotate, the sampling tube can be placed conveniently through the positioning cylinder, the air cushion can be inflated conveniently by an air pump, the gas can be transported into the air cushion through the inflation tube, and the air cushion can start to expand after being inflated, and the air cushion can be clamped and fixed after expansion, which is suitable for fixed use of sampling tubes of different specifications, and can prevent When the positioning cylinder rotates, the sampling test tube slips out of the positioning cylinder. During the rotation of the positioning cylinder, the sample liquid in the sampling test tube is mixed evenly. Therefore, when the ion chromatograph uses the sampling mechanism, it is convenient to shake the sampling test tube to mix the sample liquid in the test tube evenly to prevent precipitation, and to facilitate uniform sampling during the sampling process, thereby improving the accuracy of the test results. 2. The sliding sleeve facilitates the movement of the sliding rod, and the position of the cover plate is conveniently adjusted according to the height of the sampling test tube. The cover plate facilitates the blocking of the open end of the sampling test tube to prevent the sample liquid from overflowing when the positioning cylinder rotates. The through hole facilitates the sampling tube to pass through the cover plate into the sampling test tube, which is convenient for sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive labor. Among them:

[0017] Figure 1 This is a structural diagram of a sample injection mechanism of an ion chromatograph of the present invention;

[0018] Figure 2 This is an exploded diagram of the structure of a sample injection mechanism of an ion chromatograph of the present invention;

[0019] Figure 3 This is a structural cross-sectional view of a sample injection mechanism of an ion chromatograph of the present utility model;

[0020] Figure 4 The utility model is a schematic diagram of a cover plate of a sample injection mechanism of an ion chromatograph.

[0021] In the figure: 100 base, 110 electric lifting rod, 120 lifting platform, 130 liquid pump, 140 sampling tube, 150 injection tube, 200 motor, 210 rotating rod, 220 turntable, 230 positioning cylinder, 240 air pump, 250 inflation tube, 260 air cushion, 300 sliding sleeve, 310 sliding rod, 320 cover plate, 330 through hole. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, cross-sectional views of device structures may be partially enlarged and not to scale when describing the embodiments of the present invention. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0026] The utility model provides an injection mechanism for an ion chromatograph. Figure 1-Figure 4, including a base 100 and a motor 200, an electric lifting rod 110 is fixedly installed on the top of the base 100, one end of the electric lifting rod 110 is fixedly installed on the lifting platform 120, a liquid pump 130 is fixedly installed on the top of the lifting platform 120, the right side of the liquid pump 130 is connected to the sampling tube 140, the left side of the liquid pump 130 is connected to the sampling tube 150, the motor 200 is fixedly installed at the bottom of the base 100, the rotating shaft of the motor 200 is connected to the rotating rod 210, the rotating rod 210 is embedded in the base 100, one end of the rotating rod 210 is connected to the turntable 220, the turntable 220 is rotatably connected to the top of the base 100, a positioning cylinder 230 and an air pump 240 are fixedly installed on the top of the turntable 220, the side wall of the air pump 240 is connected to the inflation tube 250, the inner wall of the positioning cylinder 230 is connected to the air cushion 260, and one end of the inflation tube 250 is connected to the air cushion 260. The lowering rod 110 is convenient for adjusting the height of the sampling tube 140, and one end of the sampling tube 140 is conveniently inserted into the sampling test tube. The sampling tube 140 is conveniently operated by the liquid extraction pump 130 to extract the sample liquid in the sampling test tube and transport it to the ion chromatograph through the sampling tube 150 for convenient sampling. The motor 200 is convenient for driving the rotating rod 210 to rotate, thereby driving the positioning cylinder 230 on the turntable 220 to rotate. The positioning cylinder 230 is convenient for placing the sampling test tube, and the air pump 240 is convenient for inflating the air cushion 260. The gas is transported into the air cushion 260 through the inflation pipe 250, so that the air cushion 260 begins to expand after inflation. After expansion, the air cushion 260 is convenient for clamping and fixing the sampling test tube, which is suitable for fixing and using sampling test tubes of different specifications, preventing the sampling test tube from slipping out of the positioning cylinder 230 when the positioning cylinder 230 rotates. During the rotation process of the positioning cylinder 230, the sample liquid in the sampling test tube is driven to be evenly mixed.

[0027] A fixed block is provided on the side wall of the lifting platform 120, and a positioning hole is provided on the fixed block. The sampling tube 140 passes through the fixed block through the positioning hole. Specifically, the positioning hole on the fixed block facilitates vertical positioning of the sampling tube 140, so that the sampling tube 140 and the center point of the positioning cylinder 230 remain on the same vertical line.

[0028] An exhaust pipe is provided on the side wall of the air cushion 260, and a pipe plug is provided at the pipe mouth of the exhaust pipe. Specifically, the gas in the air cushion 260 is easily discharged through the exhaust pipe, which facilitates exhaust.

[0029] The air cushion 260 is an annular air cushion, which is convenient for fully wrapping the sample injection tube in the air cushion 260 and fixing it.

[0030] A control panel is provided on the top of the base 100 , and the control panel is electrically connected to the motor 200 . Specifically, the control panel is used to control the motor 200 and adjust the rotation speed of the turntable 220 , thereby adjusting the mixing speed.

[0031] A bracket is provided at the bottom of the base 100, and a rubber pad is provided at the bottom of the bracket. Specifically, the bracket facilitates positioning of the bottom of the device, and the rubber pad increases the friction of the plane, thereby improving stability.

[0032] Combine Figure 1-Figure 4 , the sampling mechanism of an ion chromatograph in this embodiment is specifically used as follows: when the ion chromatograph uses the sampling mechanism, the sampling test tube is placed in the positioning cylinder 230, and the air pump 240 is used to inflate the air cushion 260, and the gas is transported into the air cushion 260 through the inflation tube 250, so that the air cushion 260 begins to expand after being inflated. After the expansion, the air cushion 260 wraps and clamps the sampling test tube, which is suitable for fixed use of sampling test tubes of different specifications. The motor 200 is used to drive the rotating rod 210 to rotate, thereby driving the positioning cylinder 230 on the turntable 220 to rotate. During the rotation of the positioning cylinder 230, the sample liquid in the sampling test tube is mixed evenly to prevent precipitation. The electric lifting rod 110 is used to adjust the height of the sampling tube 140, so that one end of the sampling tube 140 is inserted into the sampling test tube. The liquid extraction pump 130 is used to operate the sampling tube 140 to extract the sample liquid in the sampling test tube and transport it to the ion chromatograph through the sampling tube 150, so as to facilitate uniform sampling.

[0033] Figure 3-Figure 4 The structure diagram of the second embodiment of the sample injection mechanism of the ion chromatograph of the present invention is shown. Figure 3-Figure 4 The difference from the above embodiment is that the side wall of the electric lifting rod 110 is movably connected with a sliding sleeve 300, and the side wall of the sliding sleeve 300 is provided with a sliding rod 310. One end of the sliding rod 310 is provided with a cover plate 320, and a through hole 330 corresponding to the sampling tube 140 is provided on the cover plate 320. One end of the sampling tube 140 is embedded in the through hole 330. Specifically, the sliding sleeve 300 facilitates the movement of the sliding rod 310, and the position of the cover plate 320 is adjusted according to the height of the sampling tube. The cover plate 320 facilitates the blocking of the open end of the sampling tube to prevent the sample liquid from overflowing when the positioning cylinder 230 rotates. The through hole 330 facilitates the sampling tube 140 to pass through the cover plate 320 and enter the sampling tube, which is convenient for sampling.

[0034] While the present invention has been described above with reference to specific embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, as long as no structural conflicts exist, the various features of the embodiments disclosed herein may be combined with one another in any manner, and the omission of an exhaustive description of these combinations in this specification is solely for the sake of space and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A sample injection mechanism for an ion chromatograph, characterized in that: The invention comprises a base (100) and a motor (200), wherein an electric lifting rod (110) is provided on the top of the base (100), a lifting platform (120) is provided at one end of the electric lifting rod (110), a liquid pump (130) is provided on the top of the lifting platform (120), a sampling tube (140) is connected to the right side of the liquid pump (130), and a sample injection tube (150) is connected to the left side of the liquid pump (130), and the motor (200) is provided at the bottom of the base (100), and the rotating shaft of the motor (200) is connected to the rotating shaft of the motor (200). A rotating rod (210) is connected, and the rotating rod (210) is embedded and installed in the base (100). One end of the rotating rod (210) is connected to a rotating disk (220), and the rotating disk (220) is arranged on the top of the base (100). A positioning cylinder (230) and an air pump (240) are arranged on the top of the rotating disk (220). An inflation tube (250) is arranged on the side wall of the air pump (240), and an air cushion (260) is arranged on the inner wall of the positioning cylinder (230). One end of the inflation tube (250) is connected to the air cushion (260).

2. The sample injection mechanism of an ion chromatograph according to claim 1, characterized in that: The side wall of the electric lifting rod (110) is movably connected to a sliding sleeve (300), the side wall of the sliding sleeve (300) is provided with a sliding rod (310), one end of the sliding rod (310) is provided with a cover plate (320), and the cover plate (320) is provided with a through hole (330) corresponding to the sampling tube (140), and one end of the sampling tube (140) is embedded in the through hole (330).

3. The sample injection mechanism of an ion chromatograph according to claim 1, characterized in that: A fixing block is provided on the side wall of the lifting platform (120), a positioning hole is provided on the fixing block, and the sampling tube (140) passes through the fixing block through the positioning hole.

4. The sample injection mechanism of an ion chromatograph according to claim 1, characterized in that: An exhaust pipe is provided on the side wall of the air cushion (260), and a pipe plug is provided at the pipe opening of the exhaust pipe.

5. The sample injection mechanism of an ion chromatograph according to claim 1, characterized in that: The air cushion (260) is an annular air cushion.

6. The sample injection mechanism of an ion chromatograph according to claim 1, characterized in that: A control panel is provided on the top of the base (100), and the control panel is electrically connected to the motor (200).

7. The sample injection mechanism of an ion chromatograph according to claim 1, characterized in that: A bracket is provided at the bottom of the base (100), and a rubber pad is provided at the bottom of the bracket.

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