CN115236353A - Automatic sample injector - Google Patents
Automatic sample injector Download PDFInfo
- Publication number
- CN115236353A CN115236353A CN202210938964.5A CN202210938964A CN115236353A CN 115236353 A CN115236353 A CN 115236353A CN 202210938964 A CN202210938964 A CN 202210938964A CN 115236353 A CN115236353 A CN 115236353A
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- Prior art keywords
- sample
- syringe
- pump
- sample injection
- bottom plate
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/3103—Atomic absorption analysis
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
Abstract
The invention discloses an automatic sample injector, which comprises a sample injection needle and a sample plate rack, wherein the sample injection needle is arranged on a sample injection mechanism, the sample plate rack is arranged on a sample feeding mechanism through a sample plate support, the sample plate support is fixedly arranged below the sample plate rack, the sample injection mechanism and the sample feeding mechanism are both arranged on a bottom plate, the lower end of the bottom plate is arranged on a translation mechanism, the sample injection mechanism comprises a rotating arm motor, an electric lifting mechanism and a sample injection pump, the electric lifting mechanism is vertically arranged, the rotating arm motor is fixedly arranged at the top end of the lifting mechanism, the output end of the rotating arm motor is fixedly connected with a sample injection rod through a sample injection rod connecting sleeve, the sample injection rod is horizontally arranged, the sample injection needle is vertically arranged at one end, away from the rotating arm motor, of the sample injection rod and is positioned above the sample plate rack, and the sample injection needle is communicated with the sample injection pump through a hose. The invention can better sample and send sample, and the sample needle has stable rise and fall, high precision and high working efficiency.
Description
Technical Field
The invention relates to the technical field of sample injectors, in particular to an automatic sample injector.
Background
The atomic absorption spectrophotometer is also called as an atomic absorption spectrometer, carries out metal element analysis according to the effect of substance ground state atomic vapor on characteristic radiation absorption, and can sensitively and reliably measure trace elements or trace elements; the device has the advantages of sensitivity, rapidness, high selectivity, convenient operation and the like, is widely applied to the fields of chemical industry, petroleum, medicine, metallurgy, geology, food, biochemistry, environmental monitoring and the like, can measure almost all metal elements and partial non-metal elements, and can quantitatively send a sample into an analysis instrument when the chemical substances are precisely analyzed, and is called a sample injector; the automatic sample injector for atomic absorption generally adopts modes such as cam, lead screw, track or motor rotation to drive the actions such as sampling needle sample, appearance of sample, and the unified shortcoming of these modes is that the appearance of syringe rises and falls unstably, and the appearance of falling feels and the introduction depth is limited when the syringe rises high can not program, syringe falls, brings the liquid scheduling problem that falls easily.
Therefore, in order to solve the above problems, an automatic sampler with stable needle lifting, high precision and high working efficiency is needed
Disclosure of Invention
Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide one kind can be better take a sample and send a kind, the appearance needle rises and falls stably, the precision is high, the automatic sample injector that work efficiency is high.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides an automatic sample injector, includes syringe and sample plate rail, the syringe is located on the sampling mechanism, the sample plate rail is located on the sample feeding mechanism through sample plate tray, sample plate tray holds in the palm fixedly and locates sample plate rail below, sampling mechanism with sample feeding mechanism all locates on the bottom plate, the bottom plate lower extreme is located on the translation mechanism, sampling mechanism includes the rocking arm motor and installs electric lift mechanism, syringe pump on the bottom plate, the vertical setting of electric lift mechanism, rocking arm motor fixed mounting be in elevating system's top, the output of rocking arm motor is through advancing a kind pole adapter sleeve fixedly connected with and advance the sample rod, advance the setting of sample rod level, the syringe is vertical to be located advance the sample rod and keep away from the one end of rocking arm motor, and be located sample plate rail top, through the hose intercommunication between syringe and the syringe pump.
Like this, drive the syringe through injection mechanism, carry the syringe to sample to the sample plate rail department and take a sample to the sample in the sample cup, utilize and send a kind mechanism to drive the sample plate rail, can send different samples to the syringe below, the sample of being convenient for, through electric lift mechanism, can make the up-and-down motion of syringe more accurate, the syringe of being convenient for enters into sample cup inside back recycle the syringe pump and takes a sample.
Further, feeding mechanism includes the rotary table motor, the rotary table motor passes through motor support fixed mounting on the bottom plate, the sample dish hold in the palm pass through the adapter sleeve with the output connection of rotary table motor, just the sample dish holds in the palm and is located the rotary table motor top, the adapter sleeve below is equipped with tray support. Utilize the rotation of motor drive sample plate rail, make the sample cup that needs the sample remove to the syringe below, make the rotation of sample plate more stable through tray support.
Further, translation mechanism includes XY translation platform, bracing piece and cantilever, XY translation platform fixed mounting in the bottom plate below, the bracing piece is vertical to be installed XY translation platform below, cantilever fixed mounting in bracing piece lower extreme and level set up, the cantilever is kept away from the one end of bracing piece is connected with the cantilever mount pad. Utilize the translation platform, can finely tune the syringe around and about the position, convenient accurate positioning, the syringe pay-off of being convenient for to the analysis appearance utilizes cantilever and cantilever mount pad installation translation platform, makes the translation platform more stable.
Further, still including wasing the subassembly, it includes fixed mounting to wash the subassembly wash bottle and scavenging pump on the bottom plate, be equipped with the liquid that is used for wasing the sampling needle in the washing bottle, syringe pump, scavenging pump and syringe needle pass through three way connection and hose intercommunication, the inlet of scavenging pump is arranged in wash the inside lower extreme of bottle. Through three way connection, can carry the liquid in the washing bottle to syringe pump and syringe needle to wash the syringe needle.
Further, a plurality of sample cups are arranged on the sample tray frame.
Furthermore, a solenoid valve is arranged on a hose between the cleaning pump and the sample injection pump.
Furthermore, a protective sleeve is sleeved outside the sample injection needle, and the upper end of the protective sleeve is fixedly connected with the sample injection rod. Through the protective sheath be the syringe needle more stable, prevent that the syringe needle from removing the in-process shake.
In conclusion, the invention can better sample and send samples, and the sample needle has stable rise and fall, high precision and high working efficiency.
Drawings
Fig. 1 is a schematic structural diagram of an automatic sampler according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In specific implementation, as shown in fig. 1, an automatic sample injector comprises a sample injection needle 1 and a sample tray rack 7, the sample injection needle 1 is arranged on a sample injection mechanism, the sample tray rack 7 is arranged on a sample feeding mechanism through a sample tray rack, the sample tray rack 8 is fixedly arranged below the sample tray rack 7, the sample injection mechanism and the sample feeding mechanism are arranged on a bottom plate 19, the lower end of the bottom plate 19 is arranged on a translation mechanism, the sample injection mechanism comprises a rotating arm motor 5 and an electric lifting mechanism 6 and a sample injection pump 15 which are arranged on the bottom plate 19, the electric lifting mechanism 6 is vertically arranged, the rotating arm motor 5 is fixedly arranged on the top end of the lifting mechanism 6, an output end of the rotating arm motor 5 is fixedly connected with a sample injection rod 3 through a sample injection rod connecting sleeve 4, the sample injection rod 3 is horizontally arranged, the sample injection needle 1 is vertically arranged, the sample injection rod 3 is far away from one end of the rotating arm motor 5 and is arranged above the sample tray rack 7, and the sample injection needle 1 is communicated with the sample injection pump 15 through a hose 16. Like this, drive the syringe through advancing the mechanism, carry the syringe to sample plate rail department and take a sample to the sample in the sample cup, utilize and send a kind mechanism to drive the sample plate rail, can send the sample of difference to the syringe below, the sample of being convenient for, through electric lift mechanism, can make the up-and-down motion of syringe more accurate, the syringe of being convenient for enters into sample cup inside back recycle the syringe pump and takes a sample.
In this embodiment, feeding mechanism includes turntable motor 18, turntable motor 18 passes through motor support 17 fixed mounting and is in on the bottom plate 19, sample tray holds in the palm 8 through adapter sleeve 10 with turntable motor 18's output connection, just sample tray holds in the palm 7 and is located turntable motor 18 top, adapter sleeve 10 below is equipped with tray support 11. Utilize the rotation of motor drive sample plate rail, make the sample cup that needs the sample remove to the syringe below, make the rotation of sample plate more stable through tray support.
In this embodiment, the translation mechanism includes an XY translation stage 21, a support rod 22 and a cantilever 23, the XY translation stage 21 is fixedly mounted below the bottom plate 19, the support rod 22 is vertically mounted below the XY translation stage 21, the cantilever 23 is fixedly mounted at the lower end of the support rod 22 and horizontally arranged, and one end of the cantilever 23, which is far away from the support rod 22, is connected with a cantilever mounting seat 24. Utilize the translation platform, can finely tune the position around reaching of syringe, convenient accurate positioning, the syringe pay-off of being convenient for is to the analysis appearance, utilizes cantilever and cantilever mount pad installation translation platform, makes the translation platform more stable.
In this embodiment, still including wasing the subassembly, it includes fixed mounting to wash the subassembly wash bottle 25 and cleaning pump 12 on the bottom plate 19, be equipped with the liquid that is used for wasing sampling needle 1 in the washing bottle 25, sampling pump 15, cleaning pump 12 and sampling needle 1 pass through three way connection 14 and hose intercommunication, the inlet of cleaning pump 12 is arranged in wash the inside lower extreme of bottle 25. Through three way connection, can carry the liquid in the washing bottle to syringe pump and syringe needle to wash the syringe needle.
In this embodiment, the sample tray 7 is provided with a plurality of sample cups 9. Set up a plurality of sample cups, can take a sample to the sample of difference.
In this embodiment, a solenoid valve 13 is disposed on the hose between the cleaning pump 12 and the sample injection pump 15.
In this embodiment, the sampling needle 1 is sleeved with a protective sleeve 2, and the upper end of the protective sleeve 2 is fixedly connected with the sampling rod 3. Through the protective sheath, it is more stable that the sampling needle prevents that the sampling needle from shaking at the removal in-process.
Specifically, the hose is a vinyl tube.
Specifically, the electric lifting mechanism is a compact electric lifting mechanism, the lifting height can be set according to a program, and the sampling needle is lifted to a proper height to realize sampling and sample conveying of samples.
The working principle and the process of the invention are as follows:
the computer sends different instructions of sampling, sampling amount, cleaning, sample introduction, cup number and the like, when a sampling instruction is sent, the sample disc is rotated to the corresponding sample cup position by the rotary disc motor, the precise electric lifting mechanism is automatically lifted, then the rotary arm motor is rotated to the sample cup position, then the precise electric lifting mechanism is automatically descended to enable the sample introduction needle to be arranged in the sample cup, the position of the sample introduction needle in the sample cup is programmable and adjustable, then the sample introduction pump absorbs the required sample amount according to the program instruction, finally the precise electric lifting mechanism is automatically lifted, the rotary arm motor rotates to automatically send the sample to the sample introduction hole position of the device, and the sample is injected into the device through the sample introduction pump to be measured; after the actions are executed, the precision electric lifting mechanism, the rotary arm motor and the sample injection pump automatically reset, then the electromagnetic valve is automatically opened, the cleaning pump automatically conveys cleaning liquid in the cleaning liquid bottle to the sample injection needle through the three-way joint and the hose and discharges the cleaning liquid through the sample injection needle to achieve the purpose of cleaning the whole system, and after the cleaning is finished, the sample injector enters a standby state to wait for the next instruction.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; these modifications and substitutions do not cause the essence of the corresponding technical solution to depart from the scope of the technical solution of the embodiments of the present invention, and are intended to be covered by the claims and the specification of the present invention.
Claims (7)
1. The utility model provides an automatic sample injector, includes syringe and sample plate rail, its characterized in that, the syringe is located on the sampling mechanism, the sample plate rail is held in the palm through the sample plate and is located on sending a kind mechanism, sample plate tray holds in the palm fixedly to be located sample plate rail below, sampling mechanism with send a kind mechanism and all locate on the bottom plate, the bottom plate lower extreme is located on the translation mechanism, sampling mechanism includes the rocking arm motor and installs electric lift mechanism, syringe pump on the bottom plate, the vertical setting of electric lift mechanism, rocking arm motor fixed mounting be in elevating system's top, the output of rocking arm motor is through the pole adapter sleeve fixedly connected with of advancing kind, the pole level setting advances, the syringe is vertical to be located advance the pole and keep away from the one end of rocking arm motor, and be located sample plate rail top, through the hose intercommunication between syringe and the syringe pump.
2. The autosampler of claim 1, wherein said feeding mechanism comprises a turntable motor, said turntable motor is fixedly mounted on said bottom plate by a motor support, said sample tray is connected to the output of said turntable motor by a connection sleeve, and said sample tray is located above said turntable motor, and a tray support is located below said connection sleeve.
3. The autosampler of claim 1, wherein the translation mechanism comprises an XY translation stage, a support rod and a cantilever, the XY translation stage is fixedly installed below the bottom plate, the support rod is vertically installed below the XY translation stage, the cantilever is fixedly installed at the lower end of the support rod and horizontally arranged, and a cantilever mounting seat is connected to one end of the cantilever far away from the support rod.
4. The autosampler of claim 1, further comprising a cleaning assembly, wherein the cleaning assembly comprises a cleaning bottle and a cleaning pump fixedly mounted on the bottom plate, the cleaning bottle is filled with a liquid for cleaning the sampling needle, the sampling pump, the cleaning pump and the sampling needle are communicated with a hose through a tee joint, and a liquid inlet of the cleaning pump is arranged at the lower end inside the cleaning bottle.
5. The autosampler of claim 1, wherein the sample tray is provided with a plurality of sample cups.
6. The autosampler of claim 1, wherein a solenoid valve is provided on the hose between the wash pump and the sample pump.
7. The autosampler of claim 1, wherein a protective sheath is sleeved outside the sample injection needle, and the upper end of the protective sheath is fixedly connected with the sample injection rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210938964.5A CN115236353A (en) | 2022-08-05 | 2022-08-05 | Automatic sample injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210938964.5A CN115236353A (en) | 2022-08-05 | 2022-08-05 | Automatic sample injector |
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| Publication Number | Publication Date |
|---|---|
| CN115236353A true CN115236353A (en) | 2022-10-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210938964.5A Pending CN115236353A (en) | 2022-08-05 | 2022-08-05 | Automatic sample injector |
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| Country | Link |
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| CN (1) | CN115236353A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117630253A (en) * | 2023-11-21 | 2024-03-01 | 青岛普仁仪器有限公司 | Automatic sample injector |
-
2022
- 2022-08-05 CN CN202210938964.5A patent/CN115236353A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117630253A (en) * | 2023-11-21 | 2024-03-01 | 青岛普仁仪器有限公司 | Automatic sample injector |
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