CN217140447U - High-precision multi-plunger combined-row liquid-transfering device - Google Patents
High-precision multi-plunger combined-row liquid-transfering device Download PDFInfo
- Publication number
- CN217140447U CN217140447U CN202123257185.9U CN202123257185U CN217140447U CN 217140447 U CN217140447 U CN 217140447U CN 202123257185 U CN202123257185 U CN 202123257185U CN 217140447 U CN217140447 U CN 217140447U
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- Prior art keywords
- lifting
- plate
- plunger
- lower plate
- gun head
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- 238000007789 sealing Methods 0.000 claims abstract description 24
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 12
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 18
- 230000007774 longterm Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 238000005086 pumping Methods 0.000 description 5
- 230000003028 elevating effect Effects 0.000 description 4
- 238000003745 diagnosis Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000003759 clinical diagnosis Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses a liquid-transfering device is arranged in many plungers of high accuracy antithetical couplet, include: the lifting device comprises a bracket, a first lifting mechanism arranged on the bracket, and a first lifting mounting rack with a U-shaped structure; the first lifting mounting frame is provided with a second lifting mechanism which is provided with a lifting plate positioned between the upper plate and the lower plate of the first lifting mounting frame; a plurality of plunger pumps are positioned between the lifting plate and the lower plate, and the outlet ends of the plunger pumps are integrally provided with gun head adapters extending below the lower plate; the puncture head is arranged near each gun head adapter, the top of the puncture head is connected with the lower plate, and the bottom of the puncture head is a sharp structure for opening a reagent sealing film; and the gun head withdrawing mechanism comprises a push plate arranged below the lower plate, a push rod penetrating through the lower plate and extending upwards is arranged on the push plate, a limiting part positioned below the lifting plate is arranged at the top of the push rod, and an elastic return part is arranged between the limiting part and the lower plate. The utility model relates to an ingenious, the quality is reliable, moves the liquid precision height, and is sealed effectual, and long-term operation does not have the weeping phenomenon.
Description
Technical Field
The utility model belongs to the technical field of external diagnosis check out test set technique and specifically relates to a liquid device is moved to many plungers of high accuracy antithetical couplet row.
Background
In vitro diagnosis and detection is a technology for medical diagnosis by using modern physical and chemical methods and means, and mainly researches how to provide basis for clinical diagnosis and treatment by using laboratory technology and medical instruments and equipment. As is well known, a plunger pump is a device for repeatedly sucking and discharging a liquid by changing a volume formed in a pump chamber by reciprocating a plunger in the pump chamber; plunger pumps are commonly used in laboratories for medical, chemical, etc. to draw and add different amounts of reagents and samples, and to inject them into reaction cells for chemical reactions. Because the dosage of each reagent is small, the suction and discharge precision of the pump directly influences the detection result.
Disclosure of Invention
In order to solve the problem, the utility model provides a many plungers of high accuracy ally oneself with arranges liquid-transfering device specifically can take following technical scheme:
high accuracy many plungers ally oneself with arranges liquid-transfering device, include
A support frame is arranged on the base plate,
the first lifting mechanism is arranged on the bracket and is provided with a first lifting mounting rack with a U-shaped structure;
the second lifting mechanism is arranged on the first lifting mounting frame and is provided with a lifting plate, and the lifting plate is positioned between the upper plate and the lower plate of the first lifting mounting frame;
the plunger pumps are provided with a plurality of plunger pumps, each plunger pump comprises a plunger arranged on the lifting plate and a pump body arranged on the lower plate, and the outlet ends of the pump bodies are integrally provided with gun head adapters extending below the lower plate;
the puncture head is arranged near each gun head adapter, the top of the puncture head is connected with the lower plate, and the bottom of the puncture head is provided with a sharp structure for opening a reagent sealing film;
the gun head withdrawing mechanism comprises a push plate arranged below a lower plate, a push rod penetrating through the lower plate and extending upwards is arranged on the push plate, a limiting part located below a lifting plate is arranged at the top of the push rod, and an elastic return part is arranged between the limiting part and the lower plate.
The first lifting mechanism comprises
The first screw motor is arranged on the bracket and is provided with a first screw and a first lifting nut, and the first lifting nut is connected with the first lifting mounting frame;
the first guide rail is arranged on the support and parallel to the first lead screw, and the first guide rail is connected with the first lifting mounting frame in a sliding mode.
The second lifting mechanism comprises
The second screw rod motor is arranged on the first lifting mounting frame and is provided with a second screw rod and a second lifting nut, and the second lifting nut is connected with the lifting plate;
the second guide rail is arranged on the first lifting mounting frame and parallel to the second lead screw, and the second guide rail is connected with the lifting plate in a sliding mode.
The support is provided with a first sensor for detecting the position of the first lifting mounting frame, and the first lifting mounting frame is provided with a second sensor for detecting the position of the lifting plate.
And each pair of the plunger and the pump body are coaxially arranged, and the plunger is matched with the lifting plate, the pump body and the lower plate according to the Morse taper standard.
And the inlet end of the pump body is provided with a wear-resistant sealing ring in interference fit with the plunger.
The gun head adapter is of a conical structure matched with the gun head, and a guide ring and a sealing ring are arranged on the gun head adapter.
The guide ring and the sealing ring are both circular ring protruding structures arranged on the surface of the gun head adapter and are spaced, and the guide ring is located above the sealing ring.
And through holes corresponding to the puncturing head and the gun head adapter respectively are formed in the push plate.
The push rod is two equal-height rods with opposite angles obliquely arranged on the push plate, the top surface of the limiting part is provided with a flexible buffer layer, and the elastic return part is a spring arranged on the push rod in a penetrating mode.
The utility model provides a liquid-transfering device is arranged in succession to high accuracy many plungers adopts a set of mechanism to drive many plunger pumps to imbibition or flowing back simultaneously, and above-mentioned every plunger and pump body all adopt the mode of taper fit to link to each other with first lift mounting bracket, has fully guaranteed the straightness that hangs down of assembly; meanwhile, the abrasion-resistant sealing ring in interference fit with the plunger is arranged at the inlet of the pump body, so that the air seal of the plunger pump is improved; thirdly, the outlet end of the pump body is provided with an integrated gun head adapter, so that the sealing link is reduced, the assembly difficulty is reduced, and the sealing reliability is improved; the gun head adapter is of a conical structure, the head of the gun head adapter adopts a double-ring sealing structure, the gun head adapter has guiding and sealing functions, and is matched with a gun head withdrawing mechanism, so that the function of automatically withdrawing the gun head can be realized, the gun head is not required to be manually operated, and the gun head adapter is simple and convenient; finally, the puncture head is independently arranged, so that the defects of slow liquid pumping and poor liquid pumping and discharging precision caused by the traditional method of using the gun head to break the reagent strip and seal the membrane are avoided. The utility model relates to an ingenious, the quality is reliable, moves the liquid precision height, and is sealed effectual, and long-term operation does not have the weeping phenomenon, is suitable for the operation of adding of many in laboratories such as medical treatment, chemistry, a small amount of reagent very much, has not only improved and has moved liquid efficiency, has guaranteed the accuracy of testing result moreover.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the first lift mount portion of fig. 1.
Fig. 3 is a cross-sectional view of fig. 2.
Fig. 4 is a cross-sectional view of the plunger pump of fig. 2.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the embodiments are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific working procedures are given, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1-4, many plungers of high accuracy ally oneself with arranges liquid-transfering device, including support 1, install first elevating system on the support 1, it comprises first lead screw motor 201, first guide rail 202 and the first lift mounting bracket 203 of U-shaped structure, wherein, first lead screw motor 201 has first lead screw and first lift nut, first lead screw is parallel to each other with first guide rail 202, first lift nut links to each other with first lift mounting bracket 203 is fixed, and first lift mounting bracket 203 links to each other with first guide rail 202 slides. The first lifting mounting frame 203 is provided with a second lifting mechanism which is composed of a second lead screw motor 301, a second guide rail 302 and a lifting plate 303, wherein the second lead screw motor 301 is provided with a second lead screw and a second lifting nut, the second lead screw and the second guide rail 302 are parallel to each other, the second lifting nut is fixedly connected with the lifting plate 303, the lifting plate 303 is connected with the second guide rail 302 in a sliding manner, and the lifting plate 303 is positioned between the upper plate and the lower plate of the first lifting mounting frame. In addition, a first sensor 204 for detecting the position of the first elevating mounting frame 203 is installed on the support 1, and a second sensor 304 for detecting the position of the elevating plate 303 is installed on the first elevating mounting frame 203.
Three plunger pumps 4 (the specific number is determined according to actual conditions) are arranged between the lifting plate 303 and the lower plate of the first lifting mounting frame 203, specifically, plungers 401 of the plunger pumps are connected with the lifting plate 303, the pump body 402 is connected with the lower plate, and the outlet end of the pump body 402 is integrally provided with a gun head adapter 403 extending below the lower plate, so that the sealing links can be reduced, the assembly difficulty is reduced, and the sealing reliability is improved; each pair of the plunger 401 and the pump body 402 are coaxially arranged, and the plunger 401 is matched with the lifting plate 303 and the pump body 402 is matched with the lower plate according to the Morse taper standard, so that a good positioning effect can be achieved, the vertical installation degree is ensured, the non-contact between the plunger 401 and the pump body 402 in the operation process can be realized, and the influence of air in the pump body 402 on the sample adding precision can be reduced; the inlet end of the pump body 402 is provided with a groove, a wear-resistant sealing ring 404 (generally adopting a universal plug seal) in interference fit with the plunger 401 is arranged in the groove, and is fixed by a gland, so that friction is reduced, no leakage occurs during long-term sample adding, and the plunger pump 4 keeps good air tightness; the gun head adapter 403 is a conical structure matched with the gun head, two circular raised structures are arranged on the outer surface of the gun head adapter at intervals, a guide ring 405 is arranged on the upper part, and a sealing ring 406 is arranged on the lower part, and the two circular raised structures are matched with each other, so that the air tightness of the liquid pumped and discharged by the plunger pump 4 is further enhanced by improving the alignment between the gun head and the reagent strip.
The lower plate of the first lifting mounting frame 203 is also provided with a puncturing head 5 which is used for puncturing a reagent sealing film, so that the phenomenon that a liquid inlet hole is partially or completely blocked by a sealing film when the gun head is directly used for puncturing the film is avoided. When the gun head is partially blocked, the liquid pumping column slowly rises and the actual liquid pumping amount of the pump is small, namely the liquid pumping and injecting precision of the pump is poor, so that the experimental result is inaccurate. The puncture head 5 in this embodiment is installed near each lance head adapter 403, the top of the puncture head is connected with the lower plate, and the bottom of the puncture head adopts a sharp structure which is convenient for opening the reagent sealing film.
In order to realize automatic gun head withdrawing, a gun head withdrawing mechanism is further arranged, the gun head withdrawing mechanism comprises a rectangular push plate 601 which is positioned below a lower plate, two equal-height rods which are diagonally arranged are installed on the rectangular push plate 601 and serve as push rods 602, the push rods 602 penetrate through the lower plate to extend upwards, a limiting part 603 which is positioned below a lifting plate 303 is installed at the top of the push rods, the top surface of the limiting part 603 is coated with a rubber flexible buffer layer, and an elastic return part 604 (only a common spring is selected) which is positioned between the limiting part 603 and the lower plate is installed on the push rods 602. In order to facilitate assembly, the push plate 601 is further provided with through holes corresponding to the puncture head 5 and the gun head adapter 403, respectively.
When liquid is pumped, the first lifting mechanism is started to move the first lifting mounting rack 203 downwards, and the reagent sealing film is punctured through the puncturing head 5; then, the first lifting mounting frame 203 is lifted back, and a gun head is mounted on the gun head adapter 403; then, starting the first lifting mechanism again to enable the first lifting mounting frame 203 to move downwards until the gun head is inserted below the liquid level of the reagent; at this time, the second lifting mechanism is started to move the lifting plate 303 upwards, and the three plungers 401 move upwards accordingly, so that liquid suction is realized simultaneously; then, the first lifting mounting frame 203 is moved upwards, the support 1 is moved, the gun head is aligned with the liquid discharge position, the second lifting mechanism is started, the lifting plate 303 moves downwards, the three plungers 401 move downwards along with the second lifting mechanism, and liquid discharge is achieved simultaneously; and finally, moving the support 1 to enable the gun head to correspond to the waste gun head collecting box, enabling the lifting plate 303 to continuously move downwards through the action of the second lifting mechanism, enabling the limiting piece 603 at the top of the push rod 602 to be in contact with the lifting plate 303 and then synchronously move downwards, enabling the rectangular push plate 601 at the bottom of the push rod 602 to move downwards, and pushing the gun head out of the gun head adapter 403 when the rectangular push plate 601 is connected with the gun head to realize automatic gun head withdrawing.
It should be noted that in the description of the present invention, terms of orientation or positional relationship such as "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Claims (10)
1. The utility model provides a many plungers of high accuracy allies oneself with arranges liquid-transfering device which characterized in that: comprises that
A support frame is arranged on the base plate,
the first lifting mechanism is arranged on the bracket and is provided with a first lifting mounting rack with a U-shaped structure;
the second lifting mechanism is arranged on the first lifting mounting frame and is provided with a lifting plate, and the lifting plate is positioned between the upper plate and the lower plate of the first lifting mounting frame;
the plunger pumps are provided with a plurality of plunger pumps, each plunger pump comprises a plunger arranged on the lifting plate and a pump body arranged on the lower plate, and the outlet ends of the pump bodies are integrally provided with gun head adapters extending below the lower plate;
the puncture head is arranged near each gun head adapter, the top of the puncture head is connected with the lower plate, and the bottom of the puncture head is provided with a sharp structure for opening a reagent sealing film;
the gun head withdrawing mechanism comprises a push plate arranged below a lower plate, a push rod penetrating through the lower plate and extending upwards is arranged on the push plate, a limiting part located below a lifting plate is arranged at the top of the push rod, and an elastic return part is arranged between the limiting part and the lower plate.
2. A high precision multi-plunger inline pipetting device according to claim 1, wherein: the first lifting mechanism further comprises
The first screw motor is provided with a first screw and a first lifting nut, and the first lifting nut is connected with the first lifting mounting frame;
the first guide rail is parallel to the first screw rod, and the first guide rail is connected with the first lifting mounting frame in a sliding mode.
3. A high precision multi-plunger inline pipetting device according to claim 1, wherein: the second lifting mechanism further comprises
The second screw rod motor is provided with a second screw rod and a second lifting nut, and the second lifting nut is connected with the lifting plate;
and the second guide rail is parallel to the second screw rod and is in sliding connection with the lifting plate.
4. A high precision multi-plunger inline pipetting device according to claim 1, wherein: the support is provided with a first sensor for detecting the position of the first lifting mounting frame, and the first lifting mounting frame is provided with a second sensor for detecting the position of the lifting plate.
5. A high precision multi-plunger inline pipetting device according to claim 1, wherein: and each pair of the plunger and the pump body are coaxially arranged, and the plunger is matched with the lifting plate, the pump body and the lower plate according to the Morse taper standard.
6. A high precision multi-plunger inline pipetting device according to claim 1, wherein: and the inlet end of the pump body is provided with a wear-resistant sealing ring in interference fit with the plunger.
7. A high precision multi-plunger inline pipetting device according to claim 1, wherein: the gun head adapter is of a conical structure matched with the gun head, and a guide ring and a sealing ring are arranged on the gun head adapter.
8. A high precision multi-plunger in-line pipetting device according to claim 7, wherein: the guide ring and the sealing ring are both circular ring protruding structures arranged on the surface of the gun head adapter and are spaced, and the guide ring is located above the sealing ring.
9. A high precision multi-plunger inline pipetting device according to claim 1, wherein: and through holes corresponding to the puncturing head and the gun head adapter respectively are formed in the push plate.
10. A high precision multi-plunger inline pipetting device according to claim 1, wherein: the push rod is two equal-height rods with opposite angles obliquely arranged on the push plate, the top surface of the limiting part is provided with a flexible buffer layer, and the elastic return part is a spring arranged on the push rod in a penetrating mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123257185.9U CN217140447U (en) | 2021-12-23 | 2021-12-23 | High-precision multi-plunger combined-row liquid-transfering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123257185.9U CN217140447U (en) | 2021-12-23 | 2021-12-23 | High-precision multi-plunger combined-row liquid-transfering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217140447U true CN217140447U (en) | 2022-08-09 |
Family
ID=82687317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123257185.9U Active CN217140447U (en) | 2021-12-23 | 2021-12-23 | High-precision multi-plunger combined-row liquid-transfering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217140447U (en) |
-
2021
- 2021-12-23 CN CN202123257185.9U patent/CN217140447U/en active Active
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