Pipette for plant detection

Abstract

The utility model relates to the technical field of biological experiment equipment, in particular to a pipette for plant detection, which comprises a fixing block, a threaded hole is formed in the top of the fixing block, a threaded pipe is in threaded connection with the inner wall of the threaded hole, a fixing pipe is fixedly connected with the top of the threaded pipe, a rubber sleeve is fixedly connected with the inner wall of the fixing pipe, and a fixing sleeve is fixedly connected with the rubber sleeve. And the inner wall of the rubber sleeve is fixedly connected with a gun head. According to the pipette for plant detection, through the arrangement of the fixed block, the threaded pipe, the fixed pipe, the rubber sleeve and the pipette head, when the pipette is used, a worker can select the pipette head with a proper size according to the specific condition of an experiment, the threaded pipe below the fixed pipe is aligned with a threaded hole in the fixed block, and then the pipette head is clamped in the fixed pipe; and a rubber sleeve is fixed on the inner wall of the fixed pipe, so that the connectivity between the devices can be improved, liquid leakage can be effectively prevented, the integrity and comprehensiveness of the device are improved, and the device is convenient to use by a worker.

Description

Technical Field

[0001] The utility model relates to the technical field of biological experimental equipment, in particular to a liquid transfer gun for plant detection. Background Art

[0002] A pipette is a type of pipette, commonly used to transfer small or trace amounts of liquid in the laboratory. Different specifications of pipettes are equipped with different sizes of pipette tips. The shapes produced by different manufacturers are also slightly different, but the working principles and operating methods are basically the same. The pipette is a precision instrument and must be used and stored with caution to prevent damage and avoid affecting its range. When using a pipette to extract liquid for experiments, the experiment requires high precision.

[0003] A quantitative pipette gun for plant detection disclosed in the Chinese utility model patent application disclosure CN208661173U includes a shell, a liquid storage chamber is arranged inside the shell, a cylinder is arranged inside the installation shell on one side of the liquid storage chamber, a battery and a single-chip microcomputer are arranged inside the installation shell on one side of the cylinder, a first liquid flow meter and a second liquid flow meter are respectively arranged inside the installation shell on the other side of the liquid storage chamber through a liquid guide pipe, the input ends of the first liquid flow meter and the second liquid flow meter are both connected to a three-way joint, a first solenoid valve is arranged on the three-way joint at the input end of the first liquid flow meter, and a second solenoid valve is arranged on the liquid guide pipe at the output end of the second liquid flow meter. The utility model solves the problem of not having quantitative extraction and not having quantitative discharge by providing a battery, a single-chip microcomputer, a cylinder, a first liquid flow meter, a second liquid flow meter, a first solenoid valve, and a second solenoid valve structure.

[0004] However, the device lacks the function of replacing gun tips of different sizes. When in use, the staff cannot adjust the size of the gun tip on the device according to the specific circumstances of the experiment, which causes a lot of trouble, so that the device has certain limitations. Not only that, the device also lacks the function of safe clamping. When in use, the staff cannot place the device safely and effectively, which causes a lot of trouble, and may even cause damage to the device. Utility Model Content

[0005] The purpose of the utility model is to provide a pipette for plant detection to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A pipette for plant detection, comprising:

[0008] A fixing block, wherein a threaded hole is formed on the top of the fixing block, a threaded tube is threadedly connected to the inner wall of the threaded hole, a fixing tube is fixedly connected to the top of the threaded tube, and a rubber sleeve is fixedly connected to the inner wall of the fixing tube; further comprising a gun head, wherein the gun head is inserted into the fixing tube, and the rubber sleeve is used to seal the gap between the outer wall of the gun head and the inner wall of the fixing tube; the gun head is detachably connected to the fixing tube;

[0009] The bottom of the fixed block is fixedly connected to a pipetting housing, and also includes a piston assembly used in conjunction with the pipetting housing; the piston assembly is used to change the pressure in the inner cavity of the pipetting housing, thereby sucking or discharging the liquid to be tested from the inner cavity of the pipetting housing through the gun head;

[0010] It also includes a clamping assembly, which is used to clamp and fix an unused pipette.

[0011] Optionally, the clamping assembly includes: a clamping plate, a rotating seat, a threaded rod, a fixing plate, and a bottom plate;

[0012] Two clamping plates are arranged on the outside of the pipetting housing, and the clamping plates are semicircular and used to fit and clamp the pipetting housing; the rotating seat is fixedly arranged on the outer side wall of the clamping plate, and the end of the threaded rod is rotatably connected to the rotating seat; the threaded rod passes through the fixed plate and is threadedly connected to the fixed plate; the bottom plate is arranged at the bottom of the fixed plate and is used to fix the fixed plate.

[0013] Optionally, a rectangular groove is formed on the outer surface of the pipetting housing, and a transparent glass is fixedly connected to the inner wall of the rectangular groove.

[0014] Optionally, a connecting rod is fixedly connected to the bottom of the pipetting housing, and a fixed shell is fixedly connected to the bottom of the connecting rod.

[0015] Optionally, a controller is provided on the fixed shell, a rectangular groove is provided on the outer surface of the controller, a display screen is fixedly connected to the inner wall of the rectangular groove, and a control button is fixedly connected to the outer surface of the controller; the controller controls the connection of the piston assembly.

[0016] Optionally, the piston assembly is arranged inside the fixed shell; the piston assembly comprises: an electric telescopic rod, a fixed rod, and a piston;

[0017] The electric telescopic rod is fixedly arranged inside the fixed shell, the telescopic end of the electric telescopic rod is connected to one end of the fixed rod, and the other end of the fixed rod is connected to the piston, the piston is located inside the pipetting housing, and the outer wall of the piston is sealed and fitted with the inner wall of the pipetting housing; driven by the extension and retraction of the electric telescopic rod, the piston reciprocates in the pipetting housing to change the inner cavity pressure of the pipetting housing to achieve suction or discharge of the liquid to be tested; the controller controls the connection with the electric telescopic rod to control the extension or retraction of the electric telescopic rod.

[0018] Optionally, a fixing sleeve is fixedly connected to the outer surface of the pipetting housing, and an anti-slip groove is provided on the outer surface of the fixing sleeve.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. This kind of plant detection pipette, through the arrangement of a fixed block, a threaded tube, a fixed tube, a rubber sleeve and a gun head, when in use, the staff can choose a gun head of appropriate size according to the specific circumstances of the experiment, align the threaded tube under the fixed tube with the threaded hole on the fixed block, so that the fixed tube and the fixed block are threadedly connected, and then the gun head is clamped into the fixed tube. A rubber sleeve is arranged on the inner wall of the fixed tube, which can improve the sealing between the gun head and the fixed tube, and then effectively prevent leakage, thereby improving the integrity and comprehensiveness of the device and facilitating the use of the device by the staff.

[0021] 2. This kind of pipette gun for plant detection is provided with a fixed block, a pipette housing, a clamping plate, a rotating seat, a threaded rod, a fixed plate and a bottom plate. When in use, the staff aligns the position of the pipette housing with the clamping plate, rotates the threaded rod on the fixed plate, changes the position of the clamping plate on the threaded rod, and continues to rotate the threaded rod until the clamping plate clamps the outer wall of the pipette housing. By providing the rotating seat, the clamping plate can remain stationary during the rotation of the threaded rod, and the rotation force is removed by the rotating seat. The clamping plate driven by the rotating seat can stably clamp the device, thereby improving the stability and safety of the device, facilitating the staff to safely and effectively place the device when the device is not in use, and preventing the device from being damaged by collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front view of a plant detection pipette of the utility model;

[0023] Figure 2 It is a schematic diagram of a clamping device of a pipette gun for plant detection according to the utility model;

[0024] Figure 3This is a disassembled diagram of a pipette tip replacement device for a plant detection pipette of the utility model;

[0025] Figure 4 This is a schematic diagram of the main device of a plant detection pipette of the utility model;

[0026] Figure 5 It is a schematic diagram of a driving device of a plant detection pipette gun of the utility model;

[0027] Figure 6 The utility model is a schematic diagram of the interior of a pipette gun for plant detection.

[0028] In the figure: 1. fixed block; 2. threaded tube; 3. fixed tube; 4. rubber sleeve; 5. gun head; 6. pipetting housing; 7. clamping plate; 8. rotating seat; 9. threaded rod; 10. fixed plate; 11. bottom plate; 12. transparent glass; 13. connecting rod; 14. fixed shell; 15. controller; 16. display screen; 17. control button; 18. electric telescopic rod; 20. fixed rod; 21. piston; 22. fixed sleeve; 23. anti-slip groove. DETAILED DESCRIPTION

[0029] 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.

[0030] There are many types of plant testing, such as general physical and chemical testing, major element testing, trace element testing, etc. In the process of various plant testing, the plant samples need to be supported by liquid and then the sample liquid is tested. During the testing process, the pipette needs to be used repeatedly for pipetting. Therefore, in the field of plant testing, the pipette is an indispensable equipment.

[0031] In order to solve the problem that the existing pipette is inconvenient to replace the pipette tip 5 and the problem of pipette storage and placement, the solution of this application is proposed: please refer to Figure 1-Figure 6 As shown, the utility model provides a technical solution: a plant detection pipette, comprising

[0032] A fixing block 1, wherein a threaded hole is provided on the top of the fixing block 1, a threaded tube 2 is threadedly connected to the inner wall of the threaded hole, a fixing tube 3 is fixedly connected to the top of the threaded tube 2, and a rubber sleeve 4 is fixedly connected to the inner wall of the fixing tube 3; further comprising a gun head 5, wherein the gun head 5 is inserted into the fixing tube 3, and the rubber sleeve is used to seal the gap between the outer wall of the gun head 5 and the inner wall of the fixing tube 3; the gun head 5 is detachably connected to the fixing tube 3;

[0033] The bottom of the fixed block 1 is fixedly connected to a pipetting housing 6, and also includes a piston 21 component used in conjunction with the pipetting housing 6; the piston 21 component is used to change the pressure in the inner cavity of the pipetting housing 6, and then the liquid to be tested is sucked or discharged from the inner cavity of the pipetting housing 6 through the gun head 5;

[0034] It also includes a clamping assembly, which is used to clamp and fix an unused pipette.

[0035] Through the arrangement of the fixed block 1, the threaded tube 2, the fixed tube 3, the rubber sleeve 4 and the gun head 5, when in use, the staff can select the gun head 5 of appropriate size according to the specific circumstances of the experiment, align the threaded tube 2 under the fixed tube 3 with the threaded hole on the fixed block 1, so that the fixed tube 3 is threadedly connected with the fixed block 1, and then the gun head 5 is clamped into the fixed tube 3. The rubber sleeve 4 is arranged on the inner wall of the fixed tube 3, which can improve the sealing between the gun head 5 and the fixed tube 3, and then can effectively prevent leakage, thereby improving the integrity and comprehensiveness of the device and facilitating the use of the device by the staff.

[0036] Furthermore, the clamping assembly includes: a clamping plate 7, a rotating seat 8, a threaded rod 9, a fixed plate 10, and a bottom plate 11; two clamping plates 7 are arranged on the outer side of the pipetting housing 6, and the clamping plates 7 are semicircular arc-shaped and are used to fit and clamp the pipetting housing 6; the rotating seat 8 is fixedly arranged on the outer side wall of the clamping plate 7, and the end of the threaded rod 9 is rotatably connected to the rotating seat 8; the threaded rod 9 passes through the fixed plate 10 and is threadedly connected to the fixed plate 10; the bottom plate 11 is arranged at the bottom of the fixed plate 10, and is used to fix the fixed plate 10.

[0037] like Figure 2The bottom of the fixed block 1 is fixedly connected to a pipetting housing 6, and a clamping plate 7 is arranged on the outside of the pipetting housing 6. A rotating seat 8 is fixedly connected to the outer surface of the clamping plate 7. The rotating seat 8 is rotatably connected to the threaded rod 9 to remove the force of the rotation of the threaded rod 9 and prevent the rotation of the threaded rod 9 from driving the rotating seat 8 to rotate. In the present application, the rotation of the threaded rod 9 can push the clamping plate 7 connected to the rotating seat 8 to move, and the clamping plate 7 does not rotate at this time; it also includes fixed plates 10 arranged on both sides, the threaded rod 9 passes through the fixed plate 10 and is threadedly connected to the fixed plate 10. Specifically, a threaded hole can be opened on the fixed plate 10, and the threaded rod 9 is threadedly connected to the threaded hole. One end of the threaded rod 9 is located on one side of the fixed plate 10, and the other end is located on the other side of the fixed plate 10. Rotating the threaded rod 9 can change the position of one end of the threaded rod 9 on which the rotating seat 8 is installed, and then change the position of the clamping plate 7, so that the function of the clamping plate 7 clamping or releasing the pipetting housing 6 can be realized.

[0038] like Figure 2 As shown, in order to further improve the placement stability of the fixing plate 10, a base plate 1111 can be fixedly connected to the end of the fixing plate 10; the present application is provided with a fixing block 1, a pipetting housing 6, a clamping plate 7, a rotating seat 8, a threaded rod 9, a fixing plate 10 and a base plate 11. When in use, the staff aligns the position of the pipetting housing 6 with the clamping plate 7, rotates the threaded rod 9 on the fixing plate 10, changes the position of the clamping plate 7 on the threaded rod 9, and continues to rotate the threaded rod 9 until the clamping plate 7 clamps the outer wall of the pipetting housing 6. By providing the rotating seat 8, during the rotation of the threaded rod 9, the clamping plate 7 can remain stationary, and the rotation force is removed by the rotating seat 8. The clamping plate 7 driven by the rotating seat 8 can stably clamp the device, thereby improving the stability and safety of the device, facilitating the staff to safely and effectively place the device when the device is not in use, and preventing the device from being damaged by collision.

[0039] In this embodiment, preferably, a rectangular groove is provided on the outer surface of the pipette housing 6, and a transparent glass 12 is fixedly connected to the inner wall of the rectangular groove; through the arrangement of the pipette housing 6 and the transparent glass 12, when in use, the staff can observe the internal situation of the device through the transparent glass 12, which facilitates the use of the staff, improves the staff's mastery of the device, and improves the comprehensiveness of the device.

[0040] In this embodiment, preferably, the bottom of the pipetting housing 6 is fixedly connected to a connecting rod 13, and the bottom of the connecting rod 13 is fixedly connected to a fixed shell 14; through the arrangement of the pipetting housing 6, the connecting rod 13 and the fixed shell 14, when in use, the pipetting housing 6 is connected to the fixed shell 14 through the connecting rod 13, thereby improving the connectivity of the device.

[0041] In this embodiment, preferably, a controller 15 is provided on the fixed shell 14, a rectangular groove is provided on the outer surface of the controller 15, a display screen 16 is fixedly connected to the inner wall of the rectangular groove, and a control button 17 is provided on the controller 15; the controller 15 controls the connection of the piston 21 assembly; through the setting of the fixed shell 14, the controller 15, the display screen 16 and the control button 17, when in use, the staff can understand the specific situation of the device by observing the display screen 16 on the controller 15, and can control the control button 17 on the controller 15 to adjust the operation of the device, which is convenient for the staff to use and improves the convenience of the device.

[0042] Further, the piston 21 assembly is arranged inside the fixed shell 14; the piston 21 assembly includes: an electric telescopic rod 18, a fixed rod 20, and a piston 21; the electric telescopic rod 18 is fixedly arranged inside the fixed shell 14, the telescopic end of the electric telescopic rod 18 is connected to one end of the fixed rod 20, and the other end of the fixed rod 20 is connected to the piston 21, the piston 21 is located inside the pipetting housing 6, and the outer wall of the piston 21 is sealed and fitted with the inner wall of the pipetting housing 6; driven by the extension and retraction of the electric telescopic rod 18, the piston 21 moves back and forth in the pipetting housing 6 to change the inner cavity pressure of the pipetting housing 6 to achieve suction or discharge of the liquid to be tested; the controller 15 controls the connection with the electric telescopic rod 18 to control the extension or retraction of the electric telescopic rod 18.

[0043] In this embodiment, preferably, an electric telescopic rod 18 is fixedly connected to the interior of the fixed shell 14, one end of the electric telescopic rod 18 is fixedly connected to a fixed rod 20, one end of the fixed rod 20 is fixedly connected to a piston 21, and the outer surface of the piston 21 is movably connected to the inner wall of the pipetting housing 6; after the external power supply is connected, the controller 15 controls the electric telescopic rod 18 to extend or retract, and under the extension and retraction of the electric telescopic rod 18, the piston 21 moves back and forth in the pipetting housing 6 to change the inner cavity pressure of the pipetting housing 6 to achieve suction or discharge of the liquid to be tested.

[0044] In this embodiment, the controller 15 can be said to be a PLC controller 15 or a single-chip microcomputer. The control process of using the PLC controller 15 or the single-chip microcomputer to control the electric telescopic rod 18 belongs to the conventional technical means in the field. This application does not make any improvements to its control method. In this application, it is necessary to ensure that the controller 15 can control the electric telescopic rod 18 to extend or retract. The pipette gun in this application plays the role of pipetting.

[0045] During the plant detection process, a quantitative function needs to be realized. In the present application, a flow meter can be set at the entrance of the channel in the fixed tube 3. The flow meter is connected to the controller 15. The flow meter is used to send flow data to the controller 15. After the sample liquid is sampled, when the sample liquid is moved to the detection device, the flow meter can display the amount of liquid flowing out of the pipetting housing 6, thereby realizing the function of quantitatively discharging the sample liquid.

[0046] It should be noted that the control principle between the flow meter and the controller 15 in the present application can adopt the existing patent number: CN208661173U, entitled "Principle of connecting the flow meter and the controller 15 in a quantitative pipette for plant detection", and the present application does not make any improvements to the principle.

[0047] Furthermore, through the arrangement of the fixed shell 14, the electric telescopic rod 18, the fixed rod 20, the piston 21 and the pipetting housing 6, when in use, the staff starts the electric telescopic rod 18, allows the electric telescopic rod 18 to push the fixed rod 20, and allows the piston 21 to move in the pipetting housing 6 to achieve the absorption and discharge of the liquid, which is convenient for the staff to use.

[0048] In this embodiment, preferably, the outer surface of the pipette housing 6 is fixedly connected to a fixed sleeve 22, and the outer surface of the fixed sleeve 22 is provided with an anti-skid groove 23; through the arrangement of the pipette housing 6, the fixed sleeve 22 and the anti-skid groove 23, when in use, the staff can hold the fixed sleeve 22, and the anti-skid groove 23 is arranged on the fixed sleeve 22, which can improve the stability and safety of the device, prevent the staff from slipping and causing the device to fall and cause damage, and improve the comprehensiveness of the device.

[0049] When using a plant detection pipette gun of the present embodiment, the staff can select a gun head 5 of appropriate size according to the specific conditions of the experiment, align the threaded tube 2 under the fixed tube 3 with the threaded hole on the fixed block 1 and threadedly connect the two, and then clip the gun head 5 into the fixed tube 3. A rubber sleeve 4 is fixed on the inner wall of the fixed tube 3. The rubber sleeve 4 can improve the sealing between the devices and prevent leakage between the devices, which is convenient for the staff to use the device. The staff can adjust the control button 17 on the controller 15 to control the power on or off of the electric telescopic rod 18, and then control the operation and stop of the electric telescopic rod 18. The display screen 1 on the controller 15 can be observed to control the operation and stop of the electric telescopic rod 18. 6 to understand the movement of the piston 21, which is convenient for the staff to use. The staff can observe the situation inside the device through the transparent glass 12 to prevent foreign matter from being absorbed into the device. The staff connects the device to an external power source and starts the electric telescopic rod 18, allowing the electric telescopic rod 18 to push the fixed rod 20 to move the piston 21 in the liquid transfer housing 6 to achieve the absorption and discharge of the liquid by the device. The staff aligns the position of the liquid transfer housing 6 with the clamping plate 7, adjusts the threaded rod 9 on the fixed plate 10, and allows the rotating seat 8 to drive the clamping plate 7 to stably clamp the device, providing a stable placement device for the liquid transfer gun device to prevent the liquid transfer gun from being dropped and damaged due to random placement.

[0050] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A pipette for plant detection, characterized in that: include: A fixing block (1), wherein a threaded hole is formed at the top of the fixing block (1), a threaded tube (2) is threadedly connected to the inner wall of the threaded hole, a fixing tube (3) is fixedly connected to the top of the threaded tube (2), and a rubber sleeve (4) is fixedly connected to the inner wall of the fixing tube (3); further comprising a gun head (5), wherein the gun head (5) is inserted into the fixing tube (3), and the rubber sleeve is used to seal the gap between the outer wall of the gun head (5) and the inner wall of the fixing tube (3); the gun head (5) and the fixing tube (3) are detachably connected; The bottom of the fixed block (1) is fixedly connected to a pipetting housing (6), and further comprises a piston (21) assembly used in conjunction with the pipetting housing (6); the piston (21) assembly is used to change the pressure in the inner cavity of the pipetting housing (6), thereby sucking or discharging the liquid to be tested from the inner cavity of the pipetting housing (6) through the gun head (5); It also includes a clamping assembly, which is used to clamp and fix an unused pipette.

2. The plant detection pipette according to claim 1, characterized in that: The clamping assembly comprises: a clamping plate (7), a rotating seat (8), a threaded rod (9), a fixing plate (10), and a bottom plate (11); Two clamping plates (7) are arranged on the outer side of the pipetting housing (6), and the clamping plates (7) are semicircular in shape and are used to fit and clamp the pipetting housing (6); the rotating seat (8) is fixedly arranged on the outer side wall of the clamping plate (7), and the end of the threaded rod (9) is rotatably connected to the rotating seat (8); the threaded rod (9) passes through the fixed plate (10) and is threadedly connected to the fixed plate (10); the bottom plate (11) is arranged at the bottom of the fixed plate (10) and is used to fix the fixed plate (10).

3. A plant detection pipette according to claim 1, characterized in that: The outer surface of the liquid transfer housing (6) is provided with a rectangular groove, and the inner wall of the rectangular groove is fixedly connected with a transparent glass (12).

4. A plant detection pipette according to claim 1, characterized in that: The bottom of the liquid transfer housing (6) is fixedly connected to a connecting rod (13), and the bottom of the connecting rod (13) is fixedly connected to a fixed shell (14).

5. A plant detection pipette according to claim 4, characterized in that: A controller (15) is arranged on the fixed shell (14); a rectangular groove is provided on the outer surface of the controller (15); a display screen (16) is fixedly connected to the inner wall of the rectangular groove; and a control button (17) is arranged on the outer surface of the controller (15); the controller (15) controls the connection of the piston (21) assembly.

6. A plant detection pipette according to claim 5, characterized in that: The piston (21) assembly is arranged inside the fixed shell (14); The piston (21) assembly comprises: an electric telescopic rod (18), a fixed rod (20), and a piston (21); The electric telescopic rod (18) is fixedly arranged inside the fixed shell (14); the telescopic end of the electric telescopic rod (18) is connected to one end of the fixed rod (20); the other end of the fixed rod (20) is connected to the piston (21); the piston (21) is located inside the liquid transfer housing (6); and the outer wall of the piston (21) is sealed and fitted with the inner wall of the liquid transfer housing (6); driven by the extension and retraction of the electric telescopic rod (18), the piston (21) reciprocates inside the liquid transfer housing (6) to change the inner cavity pressure of the liquid transfer housing (6) to achieve suction or discharge of the liquid to be tested; the controller (15) controls the connection with the electric telescopic rod (18) to control the extension or retraction of the electric telescopic rod (18).

7. A plant detection pipette according to claim 1, characterized in that: A fixing sleeve (22) is fixedly connected to the outer surface of the liquid transfer housing (6), and an anti-slip groove (23) is provided on the outer surface of the fixing sleeve (22).

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