Adjustable pipettor for environment detection
By introducing screw and push plate adjustment mechanism and sealing design into the pipette, the problem of low liquid discharge control accuracy is solved, and higher accuracy liquid discharge is achieved, and sampling accuracy and efficiency in environmental detection is improved.
Patent Information
- Application Number
- CN202421137148.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-23
AI Technical Summary
The existing pipettes have low liquid discharge control accuracy during environmental testing and are difficult to regulate, resulting in errors easily during sampling.
An adjustable pipette for environmental testing is designed, using screw and push plate adjustment mechanism to accurately control the liquid volume in the drain cylinder, and through the design of the sealing mechanism and air outlet, the liquid can be accurately entered into the drain cylinder. , avoid excess liquid entering.
It improves the accuracy of liquid discharge, facilitates the discharge of liquids of different accuracy, reduces operating steps, improves the use effect, and ensures the accuracy and reliability of the sampling process.
Smart Images
Figure CN222305854U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipettes, in particular to an adjustable pipette for environmental detection. Background Art
[0002] A pipette, also called a pipette gun, is a measuring tool that transfers liquid from an original container to another container within a certain range. It is widely used in biology, chemistry and other fields. In environmental testing, it is often necessary to test sewage. In order to improve the test effect, a pipette is generally required to transfer and discharge the sampled sewage. Although some of the pipettes currently used can meet the pipetting needs, they still have certain defects in actual use.
[0003] For example, the China Patent Network discloses an adjustable pipette, whose authorization announcement number is CN213286909U. This patent can realize large-capacity and small-capacity pipetting operations, as well as high-precision numerical pipetting operations, by using four different specifications of pipettes. There is no need to take liquids multiple times, which reduces the operation steps and improves work efficiency and the accuracy of taking liquids.
[0004] However, the control accuracy of the discharge volume of the pipette is not high, and it is not easy to regulate the discharge volume. The liquid in the pipette will be discharged every time the liquid is discharged. When the same amount of liquid needs to be discharged multiple times for preparation, errors are prone to occur, and improvement is needed. Therefore, an adjustable pipette for environmental testing is now proposed. Utility Model Content
[0005] In order to improve the problem that the control accuracy of the liquid discharge volume is not high and the liquid discharge volume is not easy to regulate, the utility model provides an adjustable pipette for environmental detection.
[0006] The utility model provides an adjustable pipette for environmental detection, which adopts the following technical solutions:
[0007] An adjustable pipette for environmental detection, comprising a pipette body, a liquid discharge cylinder fixedly connected to the left side of the pipette body through a support plate, an adjustment mechanism provided on the inner surface of the liquid discharge cylinder, a protection box fixedly connected to the left side of the liquid discharge cylinder, a sealing mechanism provided on the inner cavity of the protection box, a pipette connected to the left side of the pipette body, and an end of the pipette away from the pipette body connected to the bottom of the right side of the liquid discharge cylinder;
[0008] The adjusting mechanism comprises a screw, which is threadedly connected to the top of the liquid discharge cylinder, the top of the screw is fixedly connected to a rotating handle, the bottom of the screw is rotatably connected to a push plate through a bearing, and the outer surface of the push plate is fixedly connected to a sealing ring.
[0009] By adopting the above technical solution, the volume of the liquid stored in the liquid discharge cylinder can be regulated, thereby improving the accuracy of liquid discharge, facilitating the discharge of liquids of different precisions, and improving the use effect.
[0010] Optionally, the sealing mechanism includes a push rod, which is movably connected to the inner cavity of the protective box, the bottom of the push rod is fixedly connected to a connecting plate, the right side of the connecting plate is fixedly connected to a cross plate, the bottom of the cross plate is fixedly connected to a sealing plug, an air outlet is opened on the left side of the top of the push plate, the sealing plug is plugged into the air outlet, and the outer surface of the push rod is movably connected to a compression spring.
[0011] By adopting the above technical solution, the air in the lower half of the discharge cylinder can be easily discharged, thereby facilitating the liquid inside the pipette body to enter the discharge cylinder. At the same time, the air outlet can be sealed to prevent excess liquid from entering the discharge cylinder, further improving the accuracy of discharge.
[0012] Optionally, telescopic rods are fixedly connected to the front and rear positions of the top of the inner cavity of the liquid discharge cylinder, and the telescopic ends of the telescopic rods are fixedly connected to the connection point on the top of the push plate.
[0013] By adopting the above technical solution, the movement of the push plate can be guided and limited.
[0014] Optionally, a slider is fixedly connected to the left side of the connecting plate, a slide groove cooperating with the slider is provided on the left side of the inner cavity of the protection box, and the outer surface of the slider is slidably connected to the inner surface of the slide groove.
[0015] By adopting the above technical solution, the movement of the connecting plate can be guided and limited.
[0016] Optionally, a pull block is fixedly connected to the top of the push rod, and a through hole for cooperating with the push rod is opened on the top of the protection box.
[0017] By adopting the above technical solution, the push rod can be easily pulled to move up and down.
[0018] Optionally, a through slot is provided on the right side of the protection box, and the outer surface of the transverse plate is slidably connected to the inner surface of the through slot.
[0019] By adopting the above technical solution, the horizontal board can be easily moved.
[0020] Optionally, the bottom of the drainage cylinder is connected to a drainage pipe, and a valve is provided at the pipe mouth of the drainage pipe.
[0021] By adopting the above technical solution, the liquid in the liquid discharge cylinder can be conveniently discharged for use.
[0022] Optionally, a scale is provided on the front of the discharge cylinder, and a control valve is provided on the front of the pipette.
[0023] By adopting the above technical solution, the volume of the liquid in the liquid discharge cylinder can be easily penetrated.
[0024] In summary, the utility model has the following beneficial effects:
[0025] 1. The utility model can conveniently suck and pipette the sampled liquid by arranging the pipette body, can conveniently discharge the liquid sucked in the pipette body by arranging the pipette tube and the liquid discharge cylinder, can adjust the volume of the liquid stored in the liquid discharge cylinder by arranging the rotating handle, the screw rod, the push plate and the sealing ring, thereby improving the precision of liquid discharge, facilitating the discharge of liquids of different precisions, and improving the use effect.
[0026] 2. The utility model can facilitate the discharge of air from the lower half of the discharge cylinder by providing an air vent, thereby facilitating the liquid inside the pipette body to enter the discharge cylinder. By providing a push rod, a compression spring, a connecting plate, a cross plate and a sealing plug, the air vent can be sealed to prevent excess liquid from entering the discharge cylinder, thereby further improving the accuracy of liquid discharge. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a schematic diagram of the structure of the utility model;
[0028] Figure 2 It is a cross-sectional view of the structure of the liquid discharge cylinder and the protection box of the utility model;
[0029] Figure 3 It is a three-dimensional diagram of the adjustment mechanism and sealing mechanism structure of the utility model;
[0030] Figure 4 It is a cross-sectional view of the protective box structure of the utility model;
[0031] Figure 5 The utility model structure Figure 2 A partial enlarged view of point A in the middle.
[0032] In the figure: 1. Pipette body; 2. Discharge cylinder; 3. Adjustment mechanism; 301. Screw; 302. Turning handle; 303. Push plate; 304. Sealing ring; 4. Protective box; 5. Sealing mechanism; 501. Push rod; 502. Connecting plate; 503. Cross plate; 504. Sealing plug; 505. Air vent; 506. Compression spring; 6. Pipette; 7. Telescopic rod; 8. Sliding block; 9. Slide groove; 10. Pull block; 11. Through groove; 12. Discharge tube. DETAILED DESCRIPTION
[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0034] Embodiment 1:
[0035] Please refer to Figure 1-5 , an adjustable pipette for environmental detection, comprising a pipette body 1, a liquid discharge cylinder 2 is fixedly connected to the left side of the pipette body 1 through a support plate, an adjustment mechanism 3 is provided on the inner surface of the liquid discharge cylinder 2, a protection box 4 is fixedly connected to the left side of the liquid discharge cylinder 2, a sealing mechanism 5 is provided in the inner cavity of the protection box 4, a pipette 6 is connected to the left side of the pipette body 1, and one end of the pipette 6 away from the pipette body 1 is connected to the bottom of the right side of the liquid discharge cylinder 2;
[0036] The adjusting mechanism 3 includes a screw 301, which is threadedly connected to the top of the discharge cylinder 2. The top of the screw 301 is fixedly connected to a handle 302, and the bottom of the screw 301 is rotatably connected to a push plate 303 through a bearing. The outer surface of the push plate 303 is fixedly connected to a sealing ring 304, and the outer surface of the sealing ring 304 contacts the inner surface of the discharge cylinder 2.
[0037] As a technical optimization solution of the utility model, further, the front and rear positions of the top of the inner cavity of the liquid discharge cylinder 2 are fixedly connected with telescopic rods 7, and the telescopic end of the telescopic rod 7 is fixedly connected to the connection point on the top of the push plate 303.
[0038] As a technical optimization solution of the utility model, further, the bottom of the liquid discharge cylinder 2 is connected with a liquid discharge pipe 12, and a valve is provided at the pipe mouth of the liquid discharge pipe 12.
[0039] As a technical optimization solution of the present utility model, further, a scale is provided on the front of the liquid discharge cylinder 2, and a control valve is provided on the front of the pipette 6.
[0040] In the present embodiment: by providing the pipette body 1, it is possible to conveniently aspirate and pipette the sampled liquid; by providing the pipette 6 and the discharge tube 2, it is possible to conveniently discharge the liquid aspirated in the pipette body 1; by providing the rotating handle 302, the screw 301, the push plate 303 and the sealing ring 304, it is possible to regulate the volume of the liquid stored in the discharge tube 2, thereby improving the accuracy of the discharge, facilitating the discharge of liquids of different accuracies and improving the use effect; by providing the telescopic rod 7, it is possible to conveniently guide and limit the movement of the push plate 303; by providing the discharge tube 12 and the valve, it is possible to conveniently discharge the liquid in the discharge tube 2 for use; by providing the graduated ruler, it is possible to conveniently display the volume of the liquid in the discharge tube 2; by providing the control valve, the displacement of the pipette 6 can be controlled.
[0041] Embodiment 2:
[0042] Reference Figure 1-5 The sealing mechanism 5 includes a push rod 501, which is movably connected to the inner cavity of the protection box 4. The bottom of the push rod 501 is fixedly connected to a connecting plate 502, and the right side of the connecting plate 502 is fixedly connected to a cross plate 503. The bottom of the cross plate 503 is fixedly connected to a sealing plug 504. An air outlet 505 is provided on the left side of the top of the push plate 303. The sealing plug 504 is plugged into the air outlet 505. The outer surface of the push rod 501 is movably connected to a compression spring 506. The top of the compression spring 506 is fixedly connected to the connection at the top of the inner cavity of the protection box 4, and the bottom of the compression spring 506 is fixedly connected to the connection at the top of the connecting plate 502.
[0043] As a technical optimization solution of the utility model, further, a slider 8 is fixedly connected to the left side of the connecting plate 502, and a slide groove 9 for cooperating with the slider 8 is opened on the left side of the inner cavity of the protective box 4, and the outer surface of the slider 8 is slidably connected to the inner surface of the slide groove 9.
[0044] As a technical optimization solution of the present invention, further, a pull block 10 is fixedly connected to the top of the push rod 501 , and a through hole for cooperating with the push rod 501 is opened on the top of the protection box 4 .
[0045] As a technical optimization solution of the utility model, further, a through slot 11 is opened on the right side of the protection box 4, and the outer surface of the horizontal plate 503 is slidably connected to the inner surface of the through slot 11.
[0046] In the present embodiment: by providing the air vent 505, the air in the lower half of the discharge tube 2 can be easily discharged, thereby facilitating the liquid inside the pipette body 1 to enter the discharge tube 2; by providing the push rod 501, the compression spring 506, the connecting plate 502, the cross plate 503 and the sealing plug 504, the air vent 505 can be sealed to prevent excess liquid from entering the discharge tube 2, thereby further improving the accuracy of liquid discharge; by providing the slider 8 and the slide groove 9, the movement of the connecting plate 502 can be guided and the movement of the connecting plate 502 can also be limited; by providing the pull block 10 and the through hole, the push rod 501 can be easily pulled upward to facilitate the movement of the sealing plug 504; by providing the through groove 11, the cross plate 503 can be easily moved up and down.
[0047] The implementation principle of the utility model is as follows: when in use, the sampled sewage is first sucked up through the pipette body 1, and then the rotating handle 302 is rotated, the rotating handle 302 drives the screw 301 to rotate, and the screw 301 drives the push plate 303 and the sealing ring 304 to move, and the scale is observed at this time. When the push plate 303 moves to the specified position of the scale, it stops rotating, and the volume of the liquid stored in the discharge cylinder 2 is regulated. At this time, the control valve is opened, and the pull block 10 is moved upward. The pull block 10 drives the push rod 501, the connecting plate 502, the cross plate 503 and the sealing plug 504 to move upward, so that the sealing plug 504 is separated from the air outlet 505. At this time, the sewage sucked in the pipette body 1 flows out through the pipette 6 Into the drainage cylinder 2, when the liquid level of the sewage in the drainage cylinder 2 is flush with the push plate 303, the pull block 10 is released, and at this time, the push rod 501, the connecting plate 502, the cross plate 503 and the sealing plug 504 are driven downward by the action of the compression spring 506, and the sealing plug 504 is inserted into the air outlet 505 to seal the air outlet 505, and then the control valve is closed, and finally the valve is opened to discharge the sewage in the drainage cylinder 2 through the drainage pipe 12 for use. This operation can be repeated to discharge the same amount of liquid for multiple times for mixing. This method can regulate the volume of the liquid stored in the drainage cylinder 2, thereby improving the accuracy of the drainage, facilitating the discharge of liquids of different accuracies, and improving the use effect.
[0048] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.
Claims
1. An adjustable pipette for environmental detection, comprising a pipette body (1), characterized in that: The left side of the pipette body (1) is fixedly connected to a liquid discharge cylinder (2) via a support plate, the inner surface of the liquid discharge cylinder (2) is provided with an adjustment mechanism (3), the left side of the liquid discharge cylinder (2) is fixedly connected to a protection box (4), the inner cavity of the protection box (4) is provided with a sealing mechanism (5), the left side of the pipette body (1) is connected to a pipette (6), and one end of the pipette (6) away from the pipette body (1) is connected to the bottom of the right side of the liquid discharge cylinder (2); The adjusting mechanism (3) comprises a screw rod (301), wherein the screw rod (301) is threadedly connected to the top of the liquid discharge cylinder (2), the top of the screw rod (301) is fixedly connected to a rotating handle (302), the bottom of the screw rod (301) is rotatably connected to a push plate (303) via a bearing, and the outer surface of the push plate (303) is fixedly connected to a sealing ring (304).
2. The adjustable pipette for environmental detection according to claim 1, characterized in that: The sealing mechanism (5) includes a push rod (501), and the push rod (501) is movably connected to the inner cavity of the protective box (4). The bottom of the push rod (501) is fixedly connected to a connecting plate (502), the right side of the connecting plate (502) is fixedly connected to a cross plate (503), the bottom of the cross plate (503) is fixedly connected to a sealing plug (504), and the left side of the top of the push plate (303) is provided with an air outlet (505), the sealing plug (504) is plugged into the air outlet (505), and the outer surface of the push rod (501) is movably connected to a compression spring (506).
3. The adjustable pipette for environmental detection according to claim 1, characterized in that: A telescopic rod (7) is fixedly connected to the front and rear positions of the top of the inner cavity of the liquid discharge cylinder (2), and the telescopic end of the telescopic rod (7) is fixedly connected to the connection point of the top of the push plate (303).
4. The adjustable pipette for environmental detection according to claim 2, characterized in that: A slider (8) is fixedly connected to the left side of the connecting plate (502), and a slide groove (9) for cooperating with the slider (8) is provided on the left side of the inner cavity of the protection box (4), and the outer surface of the slider (8) is slidably connected to the inner surface of the slide groove (9).
5. The adjustable pipette for environmental detection according to claim 2, characterized in that: The top of the push rod (501) is fixedly connected with a pull block (10), and the top of the protection box (4) is provided with a through hole used in conjunction with the push rod (501).
6. The adjustable pipette for environmental detection according to claim 2, characterized in that: A through slot (11) is provided on the right side of the protection box (4), and the outer surface of the transverse plate (503) is slidably connected to the inner surface of the through slot (11).
7. The adjustable pipette for environmental detection according to claim 1, characterized in that: The bottom of the liquid discharge cylinder (2) is connected to a liquid discharge pipe (12), and a valve is provided at the pipe mouth of the liquid discharge pipe (12).
8. The adjustable pipette for environmental detection according to claim 1, characterized in that: The front of the liquid discharge cylinder (2) is provided with a scale, and the front of the pipette (6) is provided with a control valve.
Citation Information
Patent Citations
Adjustable pipettor
CN213286909U