CN219915518U - Sample injection needle mounting bracket of automatic sample injector - Google Patents
Sample injection needle mounting bracket of automatic sample injector Download PDFInfo
- Publication number
- CN219915518U CN219915518U CN202321056802.5U CN202321056802U CN219915518U CN 219915518 U CN219915518 U CN 219915518U CN 202321056802 U CN202321056802 U CN 202321056802U CN 219915518 U CN219915518 U CN 219915518U
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- 238000002347 injection Methods 0.000 title abstract description 13
- 239000007924 injection Substances 0.000 title abstract description 13
- 238000005070 sampling Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 2
- 238000004587 chromatography analysis Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229940090047 auto-injector Drugs 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model provides a sample injection needle mounting bracket of an automatic sample injector, which comprises a needle tube mounting bracket, a connecting frame, a push rod mounting bracket and a driving air cylinder, wherein the connecting frame is arranged on the needle tube mounting bracket, the driving air cylinder is arranged on the connecting frame, the push rod mounting bracket is fixedly connected with a piston rod of the driving air cylinder, and the push rod mounting bracket comprises a main mounting table, a pair of opening and closing clamping blocks and an opening and closing control mechanism.
Description
Technical Field
The utility model relates to the technical field of pipe detection equipment, in particular to a sample injection needle mounting bracket of an automatic sample injector.
Background
In chromatographic analysis experiments, an automatic sampler is often used for acquiring trace samples from samples and then transferring the trace samples to a chromatographic column, wherein the sample objects are liquid, gas and the like, and the chromatographic analysis is widely applied to the fields of environmental detection, food sanitation, chemical analysis, grain and oil quality supervision, judicial identification, scientific research and the like due to good separation effect and mild conditions.
In analysis test work, when the autoinjector is advancing different samples or when maintaining the debugging, often need to carry out the change and the installation of different sampling needles, and the sampling needle still need to fix the tip of sampling needle push rod and the push rod actuating mechanism on the installing support after the cylinder is installed, but current installing support mostly can only carry out simple fixation or fix and angle modulation to the comparatively even sampling needle push rod of some shape, this just makes the sampling needle that partly has irregular tip or bore too big or too little sampling needle's push rod tip can only simply be fixed on the support, can lead to the condition that the sampling needle is more easily worn and even broken in the course of the work because of having the inclination when vertical reciprocates for this kind of push rod, seriously influenced the life of sampling needle.
Disclosure of Invention
The utility model provides a sample injection needle mounting bracket of an automatic sample injector, which comprises a needle tube mounting bracket, a connecting frame, a push rod mounting bracket and a driving cylinder, wherein the connecting frame is arranged on the needle tube mounting bracket, the driving cylinder is arranged on the connecting frame, the push rod mounting bracket is fixedly connected with a piston rod of the driving cylinder, the push rod mounting bracket comprises a main mounting table, a pair of opening and closing clamping blocks and an opening and closing control mechanism, the pair of opening and closing clamping blocks and the opening and closing control mechanism are all arranged on the main mounting table, the pair of opening and closing clamping blocks are connected with the opening and closing control structure, the pair of opening and closing clamping blocks comprise mounting blocks, adjustable clamping plates, an adjusting knob with one end provided with a gear and a pair of limit studs, the mounting blocks are provided with connecting cavities for the adjusting knob and the adjustable clamping plates, the mounting blocks are provided with a pair of movable grooves for the mounting and the movable clamping plates, the top surface of the mounting blocks is provided with a through hole matched with the adjusting knob and communicated with the connecting cavities, the top surface of the mounting plate is provided with a pair of the limit studs matched with the corresponding screw holes, the pair of the movable clamping plates are matched with the two sides of the adjustable clamping plates, the two sides of the adjustable clamping plates are matched with the two sides of the two end brackets, and the two sides of the adjustable clamping plates are matched with the two side of the two adjustable clamping studs are matched with the two side sliding grooves, and the two adjustable clamping studs are matched with two sides, and two adjustable clamping grooves are matched with two sides.
By adopting the technical scheme, after the sample injection needle is arranged on the mounting frame through adjusting the adjustable clamping plates of the pair of opening and closing clamping blocks, the end parts of the push rods of the sample injection needle are connected with the pair of adjustable clamping plates under the condition of moving the positions, the adjustable clamping plates are driven to move in the movable groove through gear meshing in a specific connection mode, the movable track of the adjustable clamping plates is limited through the matching of the pair of limiting studs and the sliding groove, the adjustable clamping plates are moved to the position of the clamping notch and the radius of the clamping grooves and are matched with the end parts of the push rods, the rotation of the adjusting knobs is stopped, the pair of opening and closing clamping blocks are controlled by the opening and closing control mechanism to move in opposite directions so that the adjustable clamping plates are clamped with the push rods, the fixed end parts of the push rods can be completed, the fixed push rods can vertically move under the driving of the driving cylinders, the conditions of bending and the like are avoided, and the service life of the push rods is greatly prolonged.
The utility model is further provided with: the opening and closing control mechanism comprises a pair of mounting plates, two pairs of connecting rods and a pair of control screws, wherein the pair of mounting plates are symmetrically arranged on the main mounting table, the two pairs of connecting rods are respectively arranged on the pair of mounting blocks, threaded holes matched with the control screws and a pair of sliding holes matched with the connecting rods are respectively formed in the pair of mounting plates, and the pair of control screws are respectively arranged in the threaded holes of the pair of mounting plates.
By adopting the technical scheme, because the opening and closing control mechanism comprises a pair of mounting plates, two pairs of connecting rods and a pair of control screws, the pair of mounting plates are symmetrically arranged on the main mounting table, the two pairs of connecting rods are respectively arranged on the pair of mounting blocks, threaded holes matched with the control screws and a pair of sliding holes matched with the connecting rods are respectively arranged on the pair of mounting plates, and the pair of control screws are respectively arranged in the threaded holes of the pair of mounting plates, so that the pair of opening and closing clamping blocks are controlled by screwing the control screws to complete the closing and clamping actions.
The utility model is further provided with: a pair of tension springs are further arranged between the mounting plate and the mounting block, and the tension springs are respectively sleeved on the connecting rods.
By adopting the technical scheme, as the pair of tension springs are further arranged between the mounting plate and the mounting block, the pair of tension springs are respectively sleeved on the pair of connecting rods, so that the open-close clamping block can move along with the control screw rod when the sample injection needle is replaced, and the sample injection device is more convenient.
The utility model is further provided with: and a plurality of clamping gaps of the adjustable clamping plate are respectively provided with a rubber anti-skid sleeve.
By adopting the technical scheme, as the rubber anti-skid sleeves are arranged on the clamping notches of the adjustable clamping plate, the clamping force is enhanced, the function of protecting the push rod is achieved, and the situation that the push rod is damaged due to excessive clamping is avoided.
Drawings
Fig. 1 is a schematic structural view of a sample needle mounting bracket of an automatic sample injector according to an embodiment of the present utility model.
Fig. 2 is a schematic structural view of a push rod mounting frame in a sample injection needle mounting bracket of an automatic sample injector according to an embodiment of the present utility model.
Fig. 3 is a schematic diagram of an explosion structure of a push rod mounting frame in a sample injection needle mounting bracket of an automatic sample injector according to an embodiment of the present utility model.
The device comprises a needle tube mounting frame 1, a connecting frame 2, a push rod mounting frame 3, a driving cylinder 4, a main mounting table 5, an opening and closing clamping block 6, an opening and closing control mechanism 7, an installation block 8, an adjustable clamping plate 9, an adjustable clamping plate 10, an adjusting knob 11, a limit stud 11, a connecting cavity 12, a movable groove 13, a movable through hole 14, a threaded hole 15, a connecting tooth 16, a clamping notch 17, a sliding groove 18, a mounting plate 19, a connecting rod 20, a control screw 21, a sliding hole 22, a tension spring 23 and a rubber anti-sliding sleeve 24.
Detailed Description
As shown in fig. 1-3, a sample injection needle mounting bracket of an automatic sample injector comprises a needle tube mounting bracket 1, a connecting frame 2, a push rod mounting bracket 3 and a driving cylinder 4, wherein the connecting frame is arranged on the needle tube mounting bracket, the driving cylinder is arranged on the connecting frame, the push rod mounting bracket is fixedly connected with a piston rod of the driving cylinder, the push rod mounting bracket comprises a main mounting table 5, a pair of opening and closing clamping blocks 6 and an opening and closing control mechanism 7, the pair of opening and closing clamping blocks and the opening and closing control mechanism are all arranged on the main mounting table, the pair of opening and closing clamping blocks are all connected with the opening and closing control structure, the pair of opening and closing clamping blocks comprise a mounting block 8, an adjustable clamping plate 9, an adjusting knob 10 with one end provided with a gear and a pair of limiting studs 11, a connecting cavity 12 for connecting the adjusting knob and the adjustable clamping plate is arranged on the mounting block, the installation block is also provided with a pair of movable grooves 13 for installing and moving the adjustable clamping plate, the top surface of the installation plate is provided with a through hole 14 matched with the adjusting knob and communicated with the connecting cavity, the top surface of the installation plate is provided with a pair of threaded holes 15 matched with the limit studs and communicated with the pair of movable grooves, one side edge of the adjustable clamping plate is provided with a plurality of connecting teeth 16, the other side edge of the adjustable clamping plate is provided with a plurality of clamping notches 17 with different radiuses and used for clamping the push rod, two ends of the adjustable clamping plate are provided with a pair of sliding grooves 18 matched with the limit studs, the adjusting knob is in rotary fit with the through hole, the adjustable clamping plate is arranged in the pair of movable grooves and is matched with the gears, and the pair of limit studs are respectively matched with the threaded holes and the sliding grooves.
Through adjusting the adjustable splint of a pair of clamp splice that opens and shuts, make the sample needle behind the mounting bracket, its push rod tip is connected with a pair of adjustable splint under the condition that takes place the position and remove, concrete connected mode is rotatory a pair of adjust knob, drive adjustable splint through gear engagement and remove in the movable slot, the cooperation through a pair of spacing double-screw bolt and sliding tray limits the movable track of adjustable splint, remove adjustable splint to the position of centre gripping breach and radius all match the push rod tip after, stop the rotation of adjust knob, control a pair of clamp splice that opens and shuts through opening and shutting and remove in opposite directions and make adjustable splint press from both sides tightly with the push rod, can accomplish the fixed to the push rod tip, the push rod after the fixing can carry out vertical movement under the drive of actuating cylinder, the condition such as buckle can not take place, the life of push rod has greatly been prolonged.
The opening and closing control mechanism comprises a pair of mounting plates 19, two pairs of connecting rods 20 and a pair of control screws 21, wherein the pair of mounting plates are symmetrically arranged on the main mounting table, the two pairs of connecting rods are respectively arranged on the pair of mounting blocks, threaded holes matched with the control screws and a pair of sliding holes 22 matched with the connecting rods are respectively arranged on the pair of mounting plates, and the pair of control screws are respectively arranged in the threaded holes of the pair of mounting plates.
Because the control mechanism that opens and shuts includes a pair of mounting panel, two pairs of connecting rods and a pair of control screw rod, a pair of mounting panel symmetry sets up on main mount table, two pairs of connecting rods set up respectively on a pair of installation piece, be equipped with respectively on a pair of mounting panel with control screw rod assorted screw hole and a pair of slide hole with connecting rod assorted the screw hole of a pair of mounting panel is set up respectively in the screw hole of a pair of mounting panel for control a pair of clamp splice that opens and shuts is accomplished the action of closure clamp through twisting the control screw rod.
A pair of tension springs 23 are further arranged between the mounting plate and the mounting block, and the tension springs are respectively sleeved on the connecting rods.
Because still be equipped with a pair of extension spring between mounting panel and the installation piece, a pair of extension spring overlaps respectively and establishes on a pair of connecting rod for when changing the sample injection needle, the clamp splice that opens and shuts can follow control screw and remove, and is more convenient.
And a plurality of clamping notches of the adjustable clamping plate are respectively provided with a rubber anti-skid sleeve 24.
Because all be equipped with rubber antiskid cover on a plurality of centre gripping breach of adjustable splint for when strengthening the clamp force, played the effect of protection push rod, avoid pressing from both sides tight condition that leads to causing the damage to the push rod.
Claims (4)
1. The utility model provides an automatic sample introduction needle installing support of injector, includes needle tubing mounting bracket, link, push rod mounting bracket and drive cylinder, the link is arranged in on the needle tubing mounting bracket, drive cylinder sets up on the link, push rod mounting bracket and drive cylinder's piston rod fixed connection, its characterized in that: the push rod mounting bracket comprises a main mounting table, a pair of opening and closing clamping blocks and an opening and closing control mechanism, wherein the pair of opening and closing clamping blocks and the opening and closing control mechanism are arranged on the main mounting table, the pair of opening and closing clamping blocks are connected with the opening and closing control structure, the pair of opening and closing clamping blocks comprise a mounting block, an adjustable clamping plate, an adjusting knob with one end provided with a gear and a pair of limit studs, a connecting cavity for connecting the adjusting knob with the adjustable clamping plate is formed in the mounting block, a pair of movable grooves for mounting and moving the adjustable clamping plate are formed in the mounting block, a through hole matched with the adjusting knob and communicated with the connecting cavity is formed in the top surface of the mounting plate, a pair of threaded holes matched with the limit studs and communicated with the pair of movable grooves are formed in the top surface of the mounting plate, a plurality of connecting teeth are formed in one side edge of the adjustable clamping plate, a plurality of clamping notches with different radiuses and used for clamping the push rod are formed in the other side edge of the adjustable clamping plate, a pair of sliding grooves matched with the limit studs are formed in the two ends of the adjustable clamping plate, the adjusting knob is rotatably matched with the through hole, and the adjusting knob is matched with the through hole and the gear is arranged in the pair of the movable grooves and is matched with the pair of the movable grooves and the movable grooves.
2. An autosampler needle mounting bracket as claimed in claim 1 wherein: the opening and closing control mechanism comprises a pair of mounting plates, two pairs of connecting rods and a pair of control screws, wherein the pair of mounting plates are symmetrically arranged on the main mounting table, the two pairs of connecting rods are respectively arranged on the pair of mounting blocks, threaded holes matched with the control screws and a pair of sliding holes matched with the connecting rods are respectively formed in the pair of mounting plates, and the pair of control screws are respectively arranged in the threaded holes of the pair of mounting plates.
3. An autosampler needle mounting bracket as claimed in claim 2 wherein: a pair of tension springs are further arranged between the mounting plate and the mounting block, and the tension springs are respectively sleeved on the connecting rods.
4. An autosampler needle mounting bracket as claimed in claim 1 wherein: and a plurality of clamping gaps of the adjustable clamping plate are respectively provided with a rubber anti-skid sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321056802.5U CN219915518U (en) | 2023-05-04 | 2023-05-04 | Sample injection needle mounting bracket of automatic sample injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321056802.5U CN219915518U (en) | 2023-05-04 | 2023-05-04 | Sample injection needle mounting bracket of automatic sample injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219915518U true CN219915518U (en) | 2023-10-27 |
Family
ID=88432189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321056802.5U Active CN219915518U (en) | 2023-05-04 | 2023-05-04 | Sample injection needle mounting bracket of automatic sample injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219915518U (en) |
-
2023
- 2023-05-04 CN CN202321056802.5U patent/CN219915518U/en active Active
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