CN111610341A - Automatic sample introduction device - Google Patents
Automatic sample introduction device Download PDFInfo
- Publication number
- CN111610341A CN111610341A CN202010446141.1A CN202010446141A CN111610341A CN 111610341 A CN111610341 A CN 111610341A CN 202010446141 A CN202010446141 A CN 202010446141A CN 111610341 A CN111610341 A CN 111610341A
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- China
- Prior art keywords
- sample
- base
- gear
- driving
- sliding block
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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
-
- 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
- G01N2035/1027—General features of the devices
- G01N2035/1048—General features of the devices using the transfer device for another function
- G01N2035/1058—General features of the devices using the transfer device for another function for mixing
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- Physics & Mathematics (AREA)
- 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)
- Automatic Analysis And Handling Materials Therefor (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to an automatic sample feeding device which comprises a base, a plurality of sample frames and a driving device, wherein the base is rotatably arranged on a first support, the sample frames are respectively and rotatably connected with the base through pin shafts, and the driving device drives the sample frames to rotate around the pin shafts. According to the invention, sample introduction is realized through the rotary motion of the base and the linear motion of the sample introduction needle in the vertical direction, and the sample is turned over by using the sample frame turning motion mechanism, so that the purpose of uniformly mixing the samples is achieved; the device has the advantages of compact structural design, small occupied space, few driving mechanisms, flexible operation and convenient sample disassembly.
Description
Technical Field
The invention relates to the technical field of analytical experiment equipment, in particular to an automatic sample feeding device.
Background
In the medical field, the sample introduction process is a necessary link for biochemical analysis of collected samples. Most hospitals and scientific research institutions still adopt the mode of manual sample introduction and sample changing at present, so that the work task of experimenters is heavy, and the work efficiency is low.
Although some automatic sample feeding devices exist in the market at present, most of the automatic sample feeding devices are individually designed according to specific instruments, and are low in universality and high in price. Moreover, most of the existing automatic sampling mechanisms do not have a sample mixing function, so that the whole sampling equipment cannot complete sample introduction of samples to be mixed uniformly, and the use scene of the automatic sampling equipment is limited.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the automatic sample introduction device which can meet the sample introduction requirements of various instruments and realize the uniform mixing of samples in the sample introduction process.
The invention is realized by the following technical scheme, and provides an automatic sample feeding device which comprises a base, a plurality of sample frames and a driving device, wherein the base is rotatably arranged on a first support, the sample frames are respectively and rotatably connected with the base through pin shafts, and the driving device drives the sample frames to rotate around the pin shafts.
This optimization scheme is when using, puts the sample on the sample frame, rotates the sample frame to the sample position in proper order through rotating the base, rotates the in-process of appearance of advancing at the base, sways through drive arrangement drive sample frame, has realized that the sample shakes evenly.
As optimization, the sample racks are distributed along a circle with the rotation center of the base as the center of circle. The setting of this optimization scheme makes each sample frame form cylindricly to make the sample position that all sample frames correspond unanimously, the horizontal position of sampling equipment need not to change, only need the sampling needle reciprocate can.
Preferably, the driving device comprises a pushing mechanism moving towards the sample rack in a reciprocating mode and a torsion spring sleeved on the pin shaft, and the sample rack is connected with the pin shaft through the torsion spring. This optimization scheme utilizes pushing mechanism to promote the sample frame to swing to one side, and the torsional spring takes place deformation simultaneously, and when pushing mechanism withdrawed, the effect that utilizes the torsional spring was with sample frame swing back to realized sample frame reciprocating swing, reached good sample mixing effect.
As optimization, the pushing mechanism comprises a sliding block for pushing the sample frame, a second support fixedly arranged and a driving motor connected with the sliding block through a crank rocker mechanism, a sliding block seat is fixedly arranged on the second support, and a sliding groove which extends towards the sample frame and is matched with the sliding block is formed in the sliding block seat. This optimization scheme passes to driving motor's power to the slider through crank rocker mechanism to promote slider along spout reciprocating motion, simple structure, the periodicity is good, provides the direction for the slider through the spout that sets up, has guaranteed the uniformity of slider moving direction.
Preferably, the crank-rocker mechanism comprises a crank hinged with the sliding block and a rocker hinged with the crank, the rocker is fixedly connected with a gear shaft, a driven gear is fixedly arranged on the gear shaft, and a driving gear meshed with the driven gear is fixedly arranged at the output end of the driving motor. According to the optimized scheme, the gear shaft is driven to rotate through the gear drive belt, so that the rocker and the crank are driven to move, the structure is simple, and the transmission is reliable.
Preferably, the base is provided with a gear ring meshed with the driving gear. This optimization scheme utilizes driving motor to drive base and gear shaft simultaneously and rotates, has both saved the cost, has guaranteed the synchronous of appearance and mixing again and has gone on.
Preferably, the number of the sample racks is eight, and the number of the teeth of the gear ring is eight times that of the driven gear. The optimized scheme sets the eight sample racks, so that the central angle corresponding to each sample rack is 45 degrees, the processing is convenient, and the gear ring and the driven gear teeth are arranged, so that the rotation angular speed ratio of the base to the rocker is 1:8, and the sample mixing and sample introduction processes are coordinated.
As optimization, the first support comprises at least three vertical rods distributed along the circumferential direction, bearings are installed at the upper ends of the vertical rods, and positioning tables tangent to the bearings are fixedly arranged on the base. This optimization scheme's first support simple structure utilizes the bearing to carry out horizontal restriction to the location platform to fix a position the base, avoid the rotation center skew of base, thereby guaranteed the accuracy nature of sample frame appearance position.
As optimization, still include the linear actuator who is located base one side to and the syringe needle of the removal portion rigid coupling with linear actuator, the syringe needle is located the sample frame top. This optimization scheme drives the syringe through the linear actuator and reciprocates and takes a sample, and simple structure has further improved kind efficiency.
Preferably, the linear driver further comprises a bottom plate, and the first bracket, the driving device and the linear driver are all mounted on the bottom plate. This optimization scheme makes each part form a whole through setting up the bottom plate, makes things convenient for overall movement and transportation, has improved the wholeness of device.
The invention has the beneficial effects that: the sample introduction is realized through the rotation motion of the base and the linear motion of the sample introduction needle in the vertical direction, and the overturning of the sample is realized by utilizing the sample frame overturning motion mechanism, so that the purpose of uniformly mixing the sample is achieved; the device has the advantages of compact structural design, small occupied space, few driving mechanisms, flexible operation and convenient sample disassembly.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic structural diagram of a driving device according to the present invention;
FIG. 4 is a schematic view of a sample rack mounting structure;
shown in the figure:
100. the sample injection device comprises a sample frame module 200, a sample injection needle module 210, a support frame 220, a linear driver 230, a sample injection needle 310 and a base. 320. The device comprises a driving gear 330, a driving motor 340, a first bracket 350, a motor base 360, a bottom plate 370, a bearing 380, a torsion spring 390, a pin shaft 3100, a sample frame 400, a driving device 410, a slider base 420, a slider 430, a crank 440, a rocker 450, a gear shaft 460 and a second bracket.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
As shown in fig. 1, the automatic sample introduction device includes a sample rack module 100 and a sample needle module 200 located at one side of the sample rack module 100, wherein the sample rack module 100 and the sample needle module 200 are both mounted on a bottom plate 360.
The sample rack module 100 includes a base 310 rotatably disposed on the first support 340, eight sample racks 3100 rotatably connected to the base via pins 390, and a driving device 400 for driving the sample racks to rotate around the pins, wherein the sample racks are distributed along a circumference around a rotation center of the base, so that the sample racks form a cylindrical shape, sample placement holes extending downward from a top are formed in the sample racks, and the sample placement holes are distributed along a circumference around a rotation center of the base. The base is the ring shape, and the upper surface of base sets firmly along eight mount pads of circumference evenly distributed, and the round pin axle is worn to establish on the mount pad.
The driving device comprises a pushing mechanism which moves towards the sample rack in a periodic reciprocating manner and a torsion spring 380 which is sleeved on the pin shaft, and the sample rack is connected with the pin shaft through the torsion spring. Pushing mechanism is located the drum inboard that the sample frame formed, and is concrete, pushing mechanism is including the slider 420 and the fixed second support 460 that sets up that promote the sample frame to and the driving motor 330 of being connected with the slider through crank rocker mechanism, the lower extreme and the bottom plate rigid coupling of second support, and upwards pass the hole of base, and the upper end of second support has set firmly slider seat 410, set up on the slider seat towards the sample frame extend and with the spout of slider adaptation, the spout level sets up and follows the radial extension of sample frame place circumference, slider moving direction and its sample frame connecting pin axle mutually perpendicular that will promote.
The crank and rocker mechanism comprises a crank 430 hinged with the sliding block and a rocker 440 hinged with one end of the crank far away from the sliding block, the crank and the rocker are both horizontally arranged, the rocker is fixedly connected with a vertically arranged gear shaft 450, the gear shaft is rotatably connected with the second support, a driven gear is fixedly arranged on the gear shaft, and a driving gear 320 meshed with the driven gear is fixedly arranged at the output end of the driving motor.
The bottom surface of the base is provided with a gear ring meshed with the driving gear, the driving gear is meshed with the gear ring and the driven gear at the same time, the number of teeth of the gear ring is eight times that of the teeth of the driven gear, the rotation angular velocity ratio of the base 310 to the rocker is ensured to be 1:8, and the sample mixing and sample introduction processes are coordinated.
The first support comprises three vertical rods which are uniformly distributed along the circumferential direction, the bearings 370 are installed at the upper ends of the vertical rods, positioning tables tangent to the bearings are fixedly arranged on the base, and the positioning tables are located on the inner sides of the circumferences of the three bearings.
The needle module 200 includes a linear driver 220 located at one side of the base, and a needle 230 fixedly connected to a moving portion of the linear driver, the needle being located above the sample holder. In order to improve the integrity of the device, the present embodiment further includes a bottom plate 360, the first support, the driving device and the linear actuator are all installed on the bottom plate, and the motor base 350 for installing the driving motor and the supporting frame 210 for installing the linear actuator are fixedly installed on the bottom plate.
When in use, on one hand, the driving motor 330 drives the circular base 310 to rotate through gear engagement, and a sample to be loaded is conveyed to the same vertical position as the sample injection needle 230; on the other hand, the linear driver 220 performs linear motion in the vertical direction to drive the sample injection needle 220 to perform up-and-down motion, thereby completing the sample suction process. Meanwhile, the driving motor 330 drives the gear shaft 450 to rotate through gear engagement movement, and the rotation movement of the driving motor 330 is converted into the linear movement of the slider 420 through the crank 430, the rocker 440 and the slider 420 in sequence; the linear reciprocating motion of the slider 420 pushes the sample frame 3100 to rotate around the pin 390, and when the slider moves back, the torsion spring 380 located on the pin enables the sample frame 3100 to rotate reversely to reset, so as to achieve the uniform mixing of the samples.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.
Claims (10)
1. An automatic sampling device which is characterized in that: the device comprises a base (310) rotatably arranged on a first support (340), a plurality of sample frames (3100) rotatably connected with the base through pin shafts (390), and a driving device for driving the sample frames to rotate around the pin shafts.
2. The automatic sample introduction device according to claim 1, wherein: the sample racks are distributed along a circumference which takes the rotating center of the base as the center of a circle.
3. The automatic sample introduction device according to claim 1, wherein: the driving device comprises a pushing mechanism moving towards the sample rack in a reciprocating mode and a torsion spring (380) sleeved on the pin shaft, and the sample rack is connected with the pin shaft through the torsion spring.
4. The autoinjection device of claim 3, wherein: the pushing mechanism comprises a sliding block (420) for pushing the sample frame, a second support (460) fixedly arranged, and a driving motor (330) connected with the sliding block through a crank and rocker mechanism, a sliding block seat (410) is fixedly arranged on the second support, and a sliding groove which extends towards the sample frame and is matched with the sliding block is formed in the sliding block seat.
5. The autoinjection device of claim 4, wherein: the crank and rocker mechanism comprises a crank (430) hinged with the sliding block and a rocker (440) hinged with the crank, the rocker is fixedly connected with a gear shaft (450), a driven gear is fixedly arranged on the gear shaft, and a driving gear (320) meshed with the driven gear is fixedly arranged at the output end of the driving motor.
6. The autoinjection device of claim 5, wherein: the base is provided with a gear ring meshed with the driving gear.
7. The autoinjection device of claim 6, wherein: the sample frame is eight, and the tooth quantity of ring gear is eight times of driven gear tooth quantity.
8. The automatic sample introduction device according to claim 1, wherein: the first support comprises at least three vertical rods distributed along the circumferential direction, bearings (370) are installed at the upper ends of the vertical rods, and positioning tables tangent to the bearings are fixedly arranged on the base.
9. The automatic sample introduction device according to claim 1, wherein: the sample injection device is characterized by further comprising a linear driver (220) located on one side of the base and a sample injection needle (230) fixedly connected with a moving part of the linear driver, wherein the sample injection needle is located above the sample rack.
10. The autoinjection device of claim 9, wherein: the device further comprises a bottom plate (360), and the first support, the driving device and the linear driver are all mounted on the bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010446141.1A CN111610341A (en) | 2020-05-25 | 2020-05-25 | Automatic sample introduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010446141.1A CN111610341A (en) | 2020-05-25 | 2020-05-25 | Automatic sample introduction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111610341A true CN111610341A (en) | 2020-09-01 |
Family
ID=72196135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010446141.1A Withdrawn CN111610341A (en) | 2020-05-25 | 2020-05-25 | Automatic sample introduction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111610341A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114410426A (en) * | 2022-01-13 | 2022-04-29 | 济南国科医工科技发展有限公司 | Magnetic type self-positioning manual sample loading device |
-
2020
- 2020-05-25 CN CN202010446141.1A patent/CN111610341A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114410426A (en) * | 2022-01-13 | 2022-04-29 | 济南国科医工科技发展有限公司 | Magnetic type self-positioning manual sample loading device |
| CN114410426B (en) * | 2022-01-13 | 2023-11-07 | 济南国科医工科技发展有限公司 | Magnetic self-positioning manual sample loading device |
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| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200901 |
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| WW01 | Invention patent application withdrawn after publication |