CN220634394U - Water quality detection auxiliary pipetting assembly - Google Patents
Water quality detection auxiliary pipetting assembly Download PDFInfo
- Publication number
- CN220634394U CN220634394U CN202322273066.5U CN202322273066U CN220634394U CN 220634394 U CN220634394 U CN 220634394U CN 202322273066 U CN202322273066 U CN 202322273066U CN 220634394 U CN220634394 U CN 220634394U
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- ring
- needle cylinder
- liquid outlet
- rotating disc
- annular grooves
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 238000001514 detection method Methods 0.000 title abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 102
- 238000002347 injection Methods 0.000 claims abstract description 16
- 239000007924 injection Substances 0.000 claims abstract description 16
- 238000012372 quality testing Methods 0.000 claims description 11
- 238000005096 rolling process Methods 0.000 claims description 4
- 239000000243 solution Substances 0.000 description 13
- 230000009286 beneficial effect Effects 0.000 description 10
- 238000001125 extrusion Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to a water quality detection auxiliary pipetting assembly, which belongs to the field of water quality detection and comprises a needle cylinder, wherein a push-pull opening is formed in the top of the needle cylinder, a rubber plug is connected in the needle cylinder in a sliding manner, a pushing needle rod is connected to the rubber plug, a first liquid outlet hole, a second liquid outlet hole, a third liquid outlet hole and a fourth liquid outlet hole are formed in the bottom of the needle cylinder, the first liquid outlet hole, the second liquid outlet hole, the third liquid outlet hole and the fourth liquid outlet hole are arranged along a circumferential array at the bottom of the needle cylinder, the aperture lengths of the first liquid outlet hole, the second liquid outlet hole, the third liquid outlet hole and the fourth liquid outlet hole are different, a rotating disc is rotationally connected to the bottom of the needle cylinder, and an injection hole is formed in the rotating disc.
Description
Technical Field
The utility model relates to a pipetting assembly, in particular to a water quality detection auxiliary pipetting assembly, which belongs to the field of water quality detection.
Background
When different water qualities are researched in the aspect of analysis and test, a small amount or a small amount of liquid is generally taken by a liquid transfer device and is transported back to a laboratory for laboratory research; or transfer of liquid using a pipette in a laboratory.
The prior art solutions described above have the following drawbacks: when the user uses, when squeezing the pipettor, the aperture of play liquid hole belongs to same specification, and extrusion dynamics is not mastered well, leads to too much or too little of extruded solution, influences the accuracy to the detection of quality of water.
Disclosure of Invention
The purpose of the utility model is that: in order to solve the problem of too much or too little extrusion solution, the user is convenient to have the selectivity of various apertures, the accuracy of detection is improved, and the auxiliary pipetting component for water quality detection is provided for overcoming the defects in the prior art.
The technical scheme for solving the technical problems is as follows:
the utility model provides a water quality testing auxiliary pipetting assembly, including the cylinder, the push-and-pull mouth has been seted up at the cylinder top, sliding connection has the rubber buffer in the cylinder, the rubber buffer is connected with the promotion needle bar, first play liquid hole has been seted up to the cylinder bottom, the second goes out liquid hole, third play liquid hole and fourth play liquid hole, first play liquid hole, the second goes out liquid hole, third play liquid hole and fourth play liquid hole sets up along cylinder bottom circumference array, first play liquid hole, the second goes out liquid hole, third play liquid hole and fourth play liquid hole aperture length all inequality, the cylinder bottom rotates and is connected with the rolling disc, the jet orifice has been seted up to the rolling disc.
Compared with the prior art, the utility model has the beneficial effects that: the rotary disk is rotated, the positions of injection holes on the rotary disk are adjusted, the injection holes on the rotary disk are aligned with the first liquid outlet hole or the second liquid outlet hole or the third liquid outlet hole or the fourth liquid outlet hole according to actual use requirements, when the liquid needs to be discharged rapidly, the injection holes of the rotary disk are aligned with the first liquid outlet hole, when the liquid needs to be discharged slowly and accurately, the injection holes of the rotary disk are aligned with the fourth liquid outlet hole, then the pushing needle bar is pushed to drive the rubber plug to move in the needle cylinder, so that solution can be extruded, the situation that the extruded solution is too much or too little is avoided, the user is guaranteed to have the choice of various apertures, and the accuracy of detection is improved.
On the basis of the technical scheme, the utility model can be improved as follows.
Preferably, one side of the rotating disc, which is close to the needle cylinder, is fixedly connected with three rubber blocks, and the three rubber blocks and the jet holes are arranged along the circumferential array of the rotating disc.
The beneficial effects of adopting the further scheme are as follows: when the jet hole on the rotating disc is aligned with one of the liquid outlet holes, the other three liquid outlet holes can be blocked by the three rubber blocks, so that the liquid leakage is prevented.
Preferably, the outer wall of the needle cylinder is fixedly connected with a circular ring at the position close to the rotating disc, a plurality of springs are fixedly connected to one side, away from the rotating disc, of the circular ring, one side, close to the needle cylinder, of the rotating disc is connected with a connecting ring, the circular ring is located in the connecting ring, one side, away from the rotating disc, of the connecting ring is connected with a limiting ring, and the springs can be abutted to the limiting ring.
The beneficial effects of adopting the further scheme are as follows: the rotating disc, the connecting ring and the limiting ring can rotate around the circular ring, the spring applies acting force to the rotating disc, which is close to the circular ring, so that the rubber block on the rotating disc can be abutted against the liquid outlet, and the leakage is further reduced.
Preferably, the confinement ring is threadably connected with a plurality of bolts threaded through the confinement ring to the connecting ring.
The beneficial effects of adopting the further scheme are as follows: the bolt is screwed off from the limiting ring, so that the limiting ring and the connecting ring can be separated, and a user can clean the connecting ring and the rotating disc in time.
Preferably, the side wall of the rubber plug is fixedly connected with a convex ring, and the convex ring is abutted against the inner wall of the syringe.
The beneficial effects of adopting the further scheme are as follows: the convex ring increases the contact force between the rubber plug and the needle cylinder, and increases the tightness between the rubber plug and the needle cylinder.
Preferably, the inner wall of the needle cylinder is provided with a plurality of first annular grooves, the first annular grooves are arranged in an array along the length direction of the needle cylinder, the first annular grooves are positioned at the position of the needle cylinder away from the rotating disc, and the protruding rings can slide into the first annular grooves of the needle cylinder.
The beneficial effects of adopting the further scheme are as follows: when the pushing needle rod is pushed, the rubber plug moves into the first annular groove along with the pushing needle rod and slows down the movement, and when the pushing needle rod is pushed forcefully again, the rubber plug and the protruding ring move along with the pushing needle rod, the protruding ring moves into the next first annular groove again, the distance between the first annular groove and the first annular groove is the same, and the first annular groove can realize quantitative pushing of large-capacity solution and improve accuracy.
Preferably, the inner wall of the needle cylinder is provided with a plurality of second annular grooves, the second annular grooves are arranged in an array along the length direction of the needle cylinder, the second annular grooves are positioned at the position of the needle cylinder close to the rotating disc, the protruding ring can slide into the second annular grooves of the needle cylinder, and the gap length between the second annular grooves and the second annular grooves is smaller than that between the first annular grooves and the first annular grooves.
The beneficial effects of adopting the further scheme are as follows: when the pushing needle rod is pushed, the rubber plug moves into the second annular groove along with the pushing needle rod and slows down the movement, and when the pushing needle rod is pushed forcefully again, the rubber plug and the protruding ring move along with the pushing needle rod, the protruding ring moves into the next second annular groove again, the distance between the second annular groove and the second annular groove is the same, and the second annular groove can realize quantitative pushing of small-capacity solution, so that the accuracy is improved.
Preferably, a limit ring is fixedly connected to the inner wall of the needle cylinder at the position close to the push-pull opening.
The beneficial effects of adopting the further scheme are as follows: the needle bar and the rubber plug are pulled and pushed, the rubber plug can be propped against the limiting ring when moving towards the direction of the push-pull opening, and the limiting ring can prevent the rubber plug from sliding out of the needle cylinder.
Preferably, the bottom of the circular ring is fixedly connected with an anti-slip ring, and the anti-slip ring can be abutted against the rotating disc.
The beneficial effects of adopting the further scheme are as follows: the anti-slip ring can seal the gap between the circular ring and the rotating disc, so that liquid leakage is prevented, meanwhile, the anti-slip ring increases the friction between the circular ring and the rotating disc, and the rotating position of the injection hole is more accurate when a user rotates the rotating disc.
Preferably, one end of the pushing needle rod far away from the rubber plug is fixedly connected with a push plate, and the push plate is fixedly connected with a plurality of anti-skid patterns.
The beneficial effects of adopting the further scheme are as follows: the pushing plate can push the pushing needle rod, the friction force between the pushing plate and a human hand can be increased through the anti-skid lines, slipping is prevented, and accuracy of pipetting is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
fig. 2 is a sectional view showing the structure of the cylinder of the present utility model;
FIG. 3 is a schematic view of a first liquid outlet structure according to the present utility model;
fig. 4 is a schematic view of the rubber block structure of the present utility model.
In the figure, 1, a needle cylinder; 11. a push-pull port; 12. a limiting ring; 13. a circular ring; 131. a spring; 132. an anti-slip ring; 14. a first ring groove; 15. a second ring groove; 2. a rubber stopper; 21. pushing the needle bar; 22. a raised ring; 23. a push plate; 231. anti-skid lines; 3. a first liquid outlet hole; 31. a second liquid outlet hole; 32. a third liquid outlet hole; 33. a fourth liquid outlet hole; 4. a rotating disc; 41. a connecting ring; 42. defining a ring; 43. a bolt; 44. an injection hole; 45. rubber blocks.
Detailed Description
The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.
As shown in fig. 1 and fig. 2, a water quality detection auxiliary pipetting assembly comprises a needle cylinder 1, wherein a push-pull opening 11 is formed in the top of the needle cylinder 1, a rubber plug 2 is slidably connected in the needle cylinder 1, the rubber plug 2 slides along the length direction of the needle cylinder 1, one end, close to the push-pull opening 11, of the rubber plug 2 is fixedly connected with a push needle bar 21, and the push needle bar 21 is arranged through the push-pull opening 11. The pushing plate 23 is fixedly connected with one end of the pushing needle bar 21 far away from the rubber plug 2. The side of the push plate 23 far away from the push needle bar 21 is fixedly connected with a plurality of anti-skid patterns 231. The inner wall of the needle cylinder 1 is fixedly connected with a limiting ring 12 at the position close to the push-pull opening 11, and the rubber plug 2 can be abutted against the limiting ring 12. The side wall of the rubber plug 2 is fixedly connected with a raised ring 22, and the raised ring 22 is abutted against the inner wall of the needle cylinder 1.
As shown in fig. 2 and 3, a first liquid outlet hole 3, a second liquid outlet hole 31, a third liquid outlet hole 32 and a fourth liquid outlet hole 33 are formed in the bottom of the syringe 1, the first liquid outlet hole 3, the second liquid outlet hole 31, the third liquid outlet hole 32 and the fourth liquid outlet hole 33 are arranged along the circumferential array of the bottom of the syringe 1, the aperture lengths of the first liquid outlet hole 3, the second liquid outlet hole 31, the third liquid outlet hole 32 and the fourth liquid outlet hole 33 are different, the aperture length of the first liquid outlet hole 3 is greater than the aperture length of the second liquid outlet hole 31, the aperture length of the second liquid outlet hole 31 is greater than the aperture length of the third liquid outlet hole 32, and the aperture length of the third liquid outlet hole 32 is greater than the aperture length of the fourth liquid outlet hole 33.
As shown in fig. 2 and 4, a rotating disc 4 is arranged at the bottom of the needle cylinder 1, a circular ring 13 is fixedly connected to the outer wall of the needle cylinder 1 at a position close to the rotating disc 4, and the rotating disc 4 can be rotatably connected to the circular ring 13. An anti-slip ring 132 is fixedly connected to the bottom of the circular ring 13, the anti-slip ring 132 is positioned between the circular ring 13 and the rotating disc 4, and the anti-slip ring 132 can be abutted against the rotating disc 4. The side of the circular ring 13 far away from the rotating disc 4 is fixedly connected with a plurality of springs 131, and the springs 131 are arranged along the circumferential array of the circular ring 13. The rotating disk 4 is fixedly connected with a connecting ring 41 at one side close to the needle cylinder 1, and the circular ring 13 is positioned in the connecting ring 41. The connecting ring 41 is provided with a limiting ring 42 on a side away from the rotating disk 4, and the spring 131 can abut against the limiting ring 42. The limiting ring 42 is screwed with a plurality of bolts 43, and the bolts 43 are screwed to the connecting ring 41 through the limiting ring 42. The spring 131 applies a force to the confinement ring 42, the connection ring 41, and the rotating disk 4 toward the push-pull port 11.
As shown in fig. 2 and 4, the rotary disk 4 is provided with injection holes 44. The rotating disc 4 is fixedly connected with three rubber blocks 45 at one side close to the needle cylinder 1, and the three rubber blocks 45 and the jet holes 44 are arranged in an array along the circumference of the rotating disc 4.
When the rotary disk 4 is used, the rotary disk 4 drives the connecting ring 41 and the limiting ring 42 to rotate on the circular ring 13, a user can align the injection hole 44 on the rotary disk 4 with the first liquid outlet hole 3 or the second liquid outlet hole 31 or the third liquid outlet hole 32 or the fourth liquid outlet hole 33 according to the requirements, when the liquid outlet speed is required to be higher, the injection hole 44 is aligned with the first liquid outlet hole 3, when the liquid outlet speed is required to be slower, the injection hole 44 is aligned with the fourth liquid outlet hole 33, the problem that the extrusion solution is too much or too little is avoided, the user is ensured to have the selection of various apertures, and the detection accuracy is improved. Simultaneously, the anti-slip ring 132 increases the friction force between the annular ring 13 and the rotating disc 4, and improves the accuracy of aligning the disc injection hole 44 with the first liquid outlet hole 3 or the second liquid outlet hole 31 or the third liquid outlet hole 32 or the fourth liquid outlet hole 33. When the jet hole 44 is aligned with one of the liquid outlet holes, the other three liquid outlet Kong Dusi can be carried out by the three rubber blocks 45, the spring 131 applies an acting force to the rotating disc 4, which is close to the circular ring 13, so that the rubber blocks 45 on the rotating disc 4 can be abutted against the liquid outlet holes, and when a user needs to clean the rotating disc 4, the limiting ring 42 and the connecting ring 41 can be separated by screwing the bolts 43, so that the user can clean the connecting ring 41 and the rotating disc 4 in time.
As shown in fig. 2, three first ring grooves 14 are formed in the inner wall of the syringe 1 near the push-pull opening 11, the first ring grooves 14 are arranged in an array along the length direction of the syringe 1, and the raised rings 22 can slide into the first ring grooves 14 of the syringe 1. The inner wall of the needle cylinder 1 is provided with a plurality of second annular grooves 15 at the position close to the rotating disc 4, the second annular grooves 15 are arranged in an array along the length direction of the needle cylinder 1, the raised rings 22 can slide into the second annular grooves 15 of the needle cylinder 1, and the gap length between the second annular grooves 15 and the second annular grooves 15 is smaller than that between the first annular grooves 14 and the first annular grooves 14.
When the rubber stopper 2 is driven to move by pushing the pushing needle bar 21, the protruding ring 22 on the rubber stopper 2 can move into the first annular groove 14 and slow down to move, when the pushing needle bar 21 is pushed by force again, the rubber stopper 2 and the protruding ring 22 can be driven to move by pushing the needle bar 21, the protruding ring 22 can move into the first annular groove 14 again, the distance between the first annular groove 14 and the first annular groove 14 is the same, the first annular groove 14 is suitable for quantitatively pushing a large-capacity solution, when the rubber stopper 2 is driven to move by pushing the pushing needle bar 21, the protruding ring 22 on the rubber stopper 2 can move into the second annular groove 15 and slow down to move, when the pushing needle bar 21 is pushed by force again, the rubber stopper 2 and the protruding ring 22 can be driven to move into the second annular groove 15, the distance between the second annular groove 15 and the second annular groove 15 is the same, and the second annular groove 15 is suitable for quantitatively pushing a small-capacity solution.
Description of use: the rotating disc 4 is rotated, the rotating disc 4 drives the connecting ring 41 and the limiting ring 42 to rotate together on the circular ring 13, a user can align the injection hole 44 on the rotating disc 4 with the first liquid outlet hole 3 or the second liquid outlet hole 31 or the third liquid outlet hole 32 or the fourth liquid outlet hole 33 respectively according to requirements, when the liquid outlet speed is required to be faster, the injection hole 44 is aligned with the first liquid outlet hole 3, when the liquid outlet speed is required to be slower, the injection hole 44 is aligned with the fourth liquid outlet hole 33, the problem that too much or too little extruded solution is prevented from occurring, the user has the choice of more apertures, the accuracy of extruded solution is improved, and the accuracy of detection is improved. When the spray hole 44 is aligned with one of the liquid outlet holes, the other three liquid outlets Kong Dusi can be provided by the three rubber blocks 45 on the rotating disk 4, so that the solution is prevented from flowing out from the other three liquid outlet holes.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (10)
1. The utility model provides a water quality testing assists pipetting assembly, includes cylinder (1), and push-and-pull mouth (11) have been seted up at cylinder (1) top, and sliding connection has rubber buffer (2) in cylinder (1), and rubber buffer (2) are connected with promotion needle bar (21), its characterized in that: first play liquid hole (3), second play liquid hole (31), third play liquid hole (32) and fourth play liquid hole (33) have been seted up to cylinder (1) bottom, first play liquid hole (3), second play liquid hole (31), third play liquid hole (32) and fourth play liquid hole (33) set up along cylinder (1) bottom circumference array, first play liquid hole (3), second play liquid hole (31), third play liquid hole (32) and fourth play liquid hole (33) aperture length all are different, cylinder (1) bottom rotation is connected with rolling disc (4), jet orifice (44) have been seted up to rolling disc (4).
2. The water quality testing auxiliary pipetting assembly according to claim 1, wherein: the rotating disc (4) is fixedly connected with three rubber blocks (45) at one side close to the needle cylinder (1), and the three rubber blocks (45) and the injection holes (44) are arranged along the circumferential array of the rotating disc (4) together.
3. The water quality testing auxiliary pipetting assembly according to claim 1, wherein: the outer wall of the needle cylinder (1) is fixedly connected with a circular ring (13) at a position close to the rotating disc (4), a plurality of springs (131) are fixedly connected to one side, away from the rotating disc (4), of the circular ring (13), one side, close to the needle cylinder (1), of the rotating disc (4) is connected with a connecting ring (41), the circular ring (13) is located in the connecting ring (41), one side, away from the rotating disc (4), of the connecting ring (41) is connected with a limiting ring (42), and the springs (131) can be abutted to the limiting ring (42).
4. A water quality testing auxiliary pipetting assembly according to claim 3, wherein: the limiting ring (42) is in threaded connection with a plurality of bolts (43), and the bolts (43) penetrate through the limiting ring (42) and are in threaded connection with the connecting ring (41).
5. The water quality testing auxiliary pipetting assembly according to claim 1, wherein: the side wall of the rubber plug (2) is fixedly connected with a raised ring (22), and the raised ring (22) is abutted against the inner wall of the needle cylinder (1).
6. The water quality testing auxiliary pipetting assembly of claim 5, wherein: the inner wall of the needle cylinder (1) is provided with a plurality of first annular grooves (14), the first annular grooves (14) are arranged in an array along the length direction of the needle cylinder (1), the first annular grooves (14) are positioned at positions, away from the rotating disc (4), of the needle cylinder (1), and the protruding rings (22) can slide into the first annular grooves (14) of the needle cylinder (1).
7. The water quality testing auxiliary pipetting assembly of claim 6, wherein: a plurality of second annular grooves (15) are formed in the inner wall of the needle cylinder (1), the second annular grooves (15) are arranged in an array along the length direction of the needle cylinder (1), the second annular grooves (15) are located at positions, close to the rotating disc (4), of the needle cylinder (1), the protruding rings (22) can slide into the second annular grooves (15) of the needle cylinder (1), and the gap length between the second annular grooves (15) and the second annular grooves (15) is smaller than that between the first annular grooves (14) and the first annular grooves (14).
8. The water quality testing auxiliary pipetting assembly according to claim 1, wherein: a limit ring (12) is fixedly connected at the position of the inner wall of the needle cylinder (1) close to the push-pull opening (11).
9. A water quality testing auxiliary pipetting assembly according to claim 3, wherein: an anti-slip ring (132) is fixedly connected to the bottom of the circular ring (13), and the anti-slip ring (132) can be abutted against the rotating disc (4).
10. The water quality testing auxiliary pipetting assembly according to claim 1, wherein: one end of the pushing needle rod (21) far away from the rubber plug (2) is fixedly connected with a push plate (23), and the push plate (23) is fixedly connected with a plurality of anti-skid patterns (231).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322273066.5U CN220634394U (en) | 2023-08-23 | 2023-08-23 | Water quality detection auxiliary pipetting assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322273066.5U CN220634394U (en) | 2023-08-23 | 2023-08-23 | Water quality detection auxiliary pipetting assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220634394U true CN220634394U (en) | 2024-03-22 |
Family
ID=90269170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322273066.5U Active CN220634394U (en) | 2023-08-23 | 2023-08-23 | Water quality detection auxiliary pipetting assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220634394U (en) |
-
2023
- 2023-08-23 CN CN202322273066.5U patent/CN220634394U/en active Active
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