CN217901658U - Sample introduction assembly of liquid chromatograph - Google Patents
Sample introduction assembly of liquid chromatograph Download PDFInfo
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- CN217901658U CN217901658U CN202121059908.1U CN202121059908U CN217901658U CN 217901658 U CN217901658 U CN 217901658U CN 202121059908 U CN202121059908 U CN 202121059908U CN 217901658 U CN217901658 U CN 217901658U
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- liquid
- injector
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- support
- collecting cup
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Abstract
The utility model provides a sample feeding component of a liquid chromatograph, which relates to the technical field of the liquid chromatograph, the sample feeding component of the liquid chromatograph comprises a bracket, an injector and a liquid collecting cup, wherein the injector is positioned above the inner side of the bracket, the liquid collecting cup is positioned below the inner side of the bracket, and the injector and the liquid collecting cup are positioned on the same vertical line; a round hole is formed in the top of the support in a penetrating mode, a groove is formed in the right side of the inner wall of the round hole, a spring is horizontally fixed in the groove, a moving column is fixed at the tail end of the spring, the tail end of the moving column extends into the round hole, and a clamping block is fixed at the tail end of the moving column; the beneficial effects of the utility model reside in that: the syringe right side can be hugged closely to the clamp splice, and screw rod and spacing hole cooperation are used, carry on spacingly to the syringe left side to make the syringe firmly fixed a position in the round hole, avoid later stage syringe to appear moving phenomenon when using, the liquid that can in time absorb by the splash, thereby the liquid that can avoid the splash falls on the support, can keep the clear state of support.
Description
Technical Field
The utility model relates to a liquid chromatograph technical field, more specifically the utility model relates to a liquid chromatograph advances appearance subassembly.
Background
The modern liquid chromatograph comprises a high-pressure infusion pump, a sample introduction system, a temperature control system, a chromatographic column, a detector, a signal recording system and the like. Wherein the liquid chromatograph advances a kind of subassembly is various, has the pad formula to advance a kind of one of them, utilizes the syringe to inject sample liquid into, and this kind of device simple structure, sample size adjust conveniently, and the specially adapted micro-upgrade sample advances a kind, but in use still has following problem:
1. the injector is often unstable in positioning, and the phenomenon of shaking can occur under the influence of stress in the using process, so that the injector is poor in use experience;
2. when the injector injects liquid, the liquid is easy to splash from the container to the workbench, and the sanitation of the workbench is affected.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at the technical problem who solves is that the syringe right side can be hugged closely to the clamp splice, and screw rod and spacing hole cooperation are used, carry on spacingly to the syringe left side to make the syringe firmly fixed a position in the round hole, avoid later stage syringe to appear removing the phenomenon when using, the liquid that can in time absorb by the splash, thereby the liquid that can avoid the splash falls on the support, can keep the clear state of support.
The purpose and the efficacy of the utility model are achieved by the following specific technical means:
a sample feeding assembly of a liquid chromatograph comprises a support, an injector and a liquid collecting cup, wherein the injector is positioned above the inner side of the support, the liquid collecting cup is positioned below the inner side of the support, and the injector and the liquid collecting cup are positioned on the same vertical line;
a round hole penetrates through the top of the support, a groove is formed in the right side of the inner wall of the round hole, a spring is horizontally fixed in the groove, a moving column is fixed at the tail end of the spring, the tail end of the moving column extends into the round hole, and a clamping block is fixed at the tail end of the moving column;
a screw hole is formed in the left side of the inner wall of the circular hole, a support extends out of the left end of the screw hole, and a screw rod is connected with the screw hole in an internal thread mode;
the injector is positioned in the round hole, round holes extend from the upper end and the lower end of the injector, the lower surface of the upper end of the injector is contacted with the top of the support, and a limiting hole is formed in the upper portion of the left side of the injector;
the liquid collecting device is characterized in that sliding grooves are formed in the left side and the right side of the liquid collecting cup, a liquid blocking ring is sleeved outside the liquid collecting cup, a circle of sponge is fixed on the inner wall of the liquid blocking ring, sliding rods are fixed on the left side and the right side of the bottom of the liquid blocking ring, and the inner ends of the two sliding rods are respectively in sliding connection with the two sliding grooves.
Further preferred embodiments: the upper end of the injector is inserted with a push rod, the bottom of the push rod is fixed with a piston, and the piston is in contact with the inner wall of the injector.
Further preferred embodiments: the lower end of the injector is provided with a needle head communicated with the injector, and the lower end of the needle head is positioned in the liquid blocking ring.
Further preferred embodiments: the limiting hole and the screw hole are located on the same horizontal line, the right end of the screw rod extends into the limiting hole, and the clamping block is tightly attached to the right side of the injector.
Further preferred embodiments: the bottom of the inner wall of the bracket is provided with a placing groove, and the bottom of the liquid collecting cup is positioned in the placing groove.
Further preferred embodiments: the liquid collecting cup is characterized in that positioning blocks are fixed on the left side and the right side of the lower surface of the upper end of the liquid collecting cup, clamping grooves are formed in the bottoms of the positioning blocks, elastic lugs are fixed on the upper surface of the sliding rod, and the two elastic lugs are clamped into the two clamping grooves respectively.
Compared with the prior art, the beneficial effects of the utility model are that:
according to the sample injection assembly of the liquid chromatograph, the screw rotates rightwards all the time and enters the limiting hole in the left side of the injector, then when the screw rotates rightwards, the injector is pushed to move slightly rightwards and drive the clamping block to move rightwards together, the moving column is driven to move towards the inside of the groove and compress the spring in the rightwards moving process of the clamping block, when the spring is compressed to the maximum degree, the screw stops rotating, the clamping block is tightly attached to the right side of the injector at the moment, the screw is matched with the limiting hole to be used for limiting the left side of the injector, so that the injector is firmly positioned in the round hole, and the phenomenon that the injector moves in the later period is avoided when the injector is used;
when the slide bar slides to the inside top of spout, the elasticity lug of slide bar upper surface can block in the draw-in groove of locating piece bottom for the slide bar is positioned in the inside top of spout, keep off liquid ring upper end this moment and be located a collection liquid cup top, the syringe needle lower extreme is located a fender liquid ring, this operation is in order to increase the height of a collection liquid cup, through the setting of keeping off liquid ring and sponge, the liquid that splashes among the liquid injection process can fall on keeping off the intraductal sponge of liquid, the sponge can in time absorb these splashed liquid, can avoid the liquid that splashes to fall on the support, and then can keep the clear state of support.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the three-dimensional structure of the liquid collecting cup and the liquid baffle ring of the present invention;
FIG. 3 is a schematic view of a partial structure at A of FIG. 1 according to the present invention;
fig. 4 is a schematic view of a partial structure at B of fig. 1 according to the present invention.
The labels in the figure are: the device comprises a support 1, a placing groove 2, a liquid collecting cup 3, a sliding groove 4, a liquid blocking ring 5, sponge 6, a sliding rod 7, an elastic bump 8, a positioning block 9, a round hole 10, an injector 11, a needle 12, a push rod 13, a groove 14, a spring 15, a moving column 16, a clamping block 17, a limiting hole 18, a screw hole 19 and a screw rod 20.
Detailed Description
Referring to fig. 1-4, embodiments of the present invention will be further explained;
a sample introduction assembly of a liquid chromatograph comprises a support 1, an injector 11 and a liquid collecting cup 3, wherein the injector 11 is positioned above the inner side of the support 1, the liquid collecting cup 3 is positioned below the inner side of the support 1, and the injector 11 and the liquid collecting cup 3 are positioned on the same vertical line;
a round hole 10 penetrates through the top of the support 1, a groove 14 is formed in the right side of the inner wall of the round hole 10, a spring 15 is horizontally fixed in the groove 14, a movable column 16 is fixed at the tail end of the spring 15, the tail end of the movable column 16 extends into the round hole 10, and a clamping block 17 is fixed at the tail end of the movable column 16;
a screw hole 19 is formed in the left side of the inner wall of the round hole 10, the left end of the screw hole 19 extends out of the support 1, and a screw rod 20 is connected with the screw hole 19 in an internal thread manner;
the injector 11 is positioned in the round hole 10, the round holes 10 extend out of the upper end and the lower end of the injector 11, the lower surface of the upper end of the injector 11 is in contact with the top of the bracket 1, and a limiting hole 18 is formed in the upper portion of the left side of the injector 11;
the limiting hole 18 and the screw hole 19 are positioned on the same horizontal line, the right end of the screw rod 20 extends into the limiting hole 18, and the clamping block 17 is tightly attached to the right side of the injector 11;
specifically, the injector 11 can contain injection liquid, when a user clamps the injector 11 in the circular hole 10, the screw 20 is firstly rotated leftwards, when the right end of the screw 20 completely enters the screw hole 19 from the circular hole 10, the injector 11 is placed in the circular hole 10, in the process, the injector 11 can touch the clamping block 17, but the clamping block 17 has no effect on the injector 11, when the lower surface of the upper end of the injector 11 is contacted with the top of the bracket 1, the screw 20 is rotated rightwards, so that the right end of the screw 20 is slowly rotated out of the screw hole 19 and enters the circular hole 10, because the limiting hole 18 and the screw hole 19 are positioned on the same horizontal line, the screw 20 is rotated rightwards and enters the limiting hole 18 on the left side of the injector 11, and then when the screw 20 is rotated rightwards, the injector 11 is pushed to slightly move rightwards, the clamping block 17 is driven to move rightwards, the clamping block 17 drives the moving column 16 to move towards the inside of the groove 14 and compress the spring 15, when the spring 15 is compressed to the maximum degree, the screw 20 is tightly matched with the limiting hole 18, so that the injector 11 is firmly positioned in the left side, and the injector 11 is prevented from being used in the later stage;
the left side and the right side of the liquid collecting cup 3 are both provided with sliding chutes 4, the liquid blocking ring 5 is sleeved outside the liquid collecting cup 3, the inner wall of the liquid blocking ring 5 is fixed with a circle of sponge 6, the left side and the right side of the bottom of the liquid blocking ring 5 are both fixed with sliding rods 7, and the inner ends of the two sliding rods 7 are respectively connected with the two sliding chutes 4 in a sliding manner;
a placing groove 2 is formed in the bottom of the inner wall of the support 1, and the bottom of the liquid collecting cup 3 is located in the placing groove 2;
the lower end of the injector 11 is provided with a needle head 12 communicated with the injector, and the lower end of the needle head 12 is positioned in the liquid baffle ring 5;
specifically, when a user wants to use the liquid collecting cup 3 to load and take sample liquid, the bottom of the liquid collecting cup 3 is firstly embedded in the placing groove 2, then the liquid blocking ring 5 is moved upwards, the liquid blocking ring 5 can drive the sliding rod 7 to slide in the sliding groove 4, the sliding groove 4 and the sliding rod 7 are arranged, the liquid blocking ring 5 can move more stably outside the liquid collecting cup 3, when the sliding rod 7 slides to the upper part inside the sliding groove 4, the elastic lug 8 on the upper surface of the sliding rod 7 can be clamped into the clamping groove at the bottom of the positioning block 9, so that the sliding rod 7 is positioned above the inside of the sliding groove 4, the upper end of the liquid blocking ring 5 is positioned above the liquid collecting cup 3 at the moment, the lower end of the needle head 12 is positioned in the liquid blocking ring 5, and the operation is used for increasing the height of the liquid collecting cup 3;
a push rod 13 is inserted into the upper end of the injector 11, a piston is fixed at the bottom of the push rod 13, and the piston is in contact with the inner wall of the injector 11;
furthermore, the push rod 13 is pushed downwards, the piston can be driven to move downwards in the injector 11 and push liquid in the injector 11, the needle 12 is communicated with the injector 11, so that the liquid can be injected into the liquid collecting cup 3 through the needle 12, through the arrangement of the liquid blocking ring 5 and the sponge 6, the liquid splashed in the liquid injection process can fall on the sponge 6 in the liquid blocking ring 5, the sponge 6 can absorb the splashed liquid in time, the splashed liquid can be prevented from falling on the bracket 1, and the clean state of the bracket 1 can be further kept.
Claims (6)
1. The utility model provides a kind subassembly is advanced to liquid chromatograph, includes support (1), syringe (11) and collection liquid cup (3), syringe (11) are located support (1) inboard top, it is located support (1) inboard below to collect liquid cup (3), just syringe (11) are in same vertical line with collection liquid cup (3), its characterized in that:
a round hole (10) penetrates through the top of the support (1), a groove (14) is formed in the right side of the inner wall of the round hole (10), a spring (15) is horizontally fixed in the groove (14), a movable column (16) is fixed at the tail end of the spring (15), the tail end of the movable column (16) extends into the round hole (10), and a clamping block (17) is fixed at the tail end of the movable column (16);
a screw hole (19) is formed in the left side of the inner wall of the circular hole (10), the support (1) extends out of the left end of the screw hole (19), and a screw rod (20) is connected to the screw hole (19) in an internal thread mode;
the injector (11) is positioned in the round hole (10), the round holes (10) extend from the upper end and the lower end of the injector (11), the lower surface of the upper end of the injector (11) is contacted with the top of the bracket (1), and a limiting hole (18) is formed in the upper left side of the injector (11);
the liquid collecting cup is characterized in that sliding grooves (4) are formed in the left side and the right side of the liquid collecting cup (3), a liquid blocking ring (5) is sleeved outside the liquid collecting cup (3), a circle of sponge (6) is fixed on the inner wall of the liquid blocking ring (5), sliding rods (7) are fixed on the left side and the right side of the bottom of the liquid blocking ring (5), and the inner ends of the two sliding rods (7) are connected with the two sliding grooves (4) in a sliding mode.
2. The sample introduction assembly for a liquid chromatograph of claim 1, wherein: a push rod (13) is inserted into the upper end of the injector (11), a piston is fixed at the bottom of the push rod (13), and the piston is in contact with the inner wall of the injector (11).
3. The sample introduction assembly for a liquid chromatograph of claim 1, wherein: the lower end of the injector (11) is provided with a needle (12) communicated with the injector, and the lower end of the needle (12) is positioned in the liquid baffle ring (5).
4. The sample feeding assembly of the liquid chromatograph of claim 1, wherein: the limiting hole (18) and the screw hole (19) are located on the same horizontal line, the right end of the screw rod (20) extends into the limiting hole (18), and the clamping block (17) is tightly attached to the right side of the injector (11).
5. The sample feeding assembly of the liquid chromatograph of claim 1, wherein: a placing groove (2) is formed in the bottom of the inner wall of the support (1), and the bottom of the liquid collecting cup (3) is located in the placing groove (2).
6. The sample feeding assembly of the liquid chromatograph of claim 1, wherein: the left side and the right side of the lower surface of the upper end of the liquid collecting cup (3) are respectively fixed with a positioning block (9), the bottoms of the positioning blocks (9) are respectively provided with a clamping groove, the upper surface of the sliding rod (7) is fixed with an elastic lug (8), and the elastic lugs (8) are respectively clamped into the two clamping grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121059908.1U CN217901658U (en) | 2021-05-18 | 2021-05-18 | Sample introduction assembly of liquid chromatograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121059908.1U CN217901658U (en) | 2021-05-18 | 2021-05-18 | Sample introduction assembly of liquid chromatograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217901658U true CN217901658U (en) | 2022-11-25 |
Family
ID=84106227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121059908.1U Active CN217901658U (en) | 2021-05-18 | 2021-05-18 | Sample introduction assembly of liquid chromatograph |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217901658U (en) |
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2021
- 2021-05-18 CN CN202121059908.1U patent/CN217901658U/en active Active
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