Accurate trace liquid dispenser

Abstract

The utility model discloses an accurate trace liquid separator, which comprises a piston cylinder and a fixed handle of the piston cylinder, and is characterized in that a liquid separation pipe is arranged at the lower end of the piston cylinder, and the liquid separation pipe is connected with an air inlet component; the air inlet assembly comprises a cylinder, a spring, a stop lever, a connecting block and a handle, the cylinder is fixedly communicated with the upper portion of the liquid distribution pipe, the outer end of the cylinder is fixedly connected with the connecting block through the spring, the connecting block fixes the stop lever, the stop lever is matched with the cylinder, and the stop lever can be inserted into the cylinder. The utility model relates to the technical field of liquid dispensers, in particular to an accurate trace liquid dispenser, which can conveniently introduce air through an air inlet component so as to discharge extracted liquid, is provided with a plurality of liquid dispensing pipes, can simultaneously collect various samples and can perform liquid dispensing treatment through the air inlet component.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid dispensers, and in particular to a precise micro-liquid dispenser. Background Art

[0002] A micro-dispenser is a common tool used in laboratories to accurately measure and dispense very small volumes of liquid. Traditional micro-dispensers may include pipettes, pipettes, automatic pipettes, etc. Traditional dispensers usually have problems such as complex operation, low efficiency, and difficulty in achieving precise control. In addition, they cannot separate and extract multiple samples at one time. In order to improve the accuracy and efficiency of liquid separation, a new type of precise micro-dispenser is proposed. Summary of the invention

[0003] The utility model provides a precise micro-liquid dispenser. The utility model can conveniently intake air through an air intake component to discharge the extracted liquid. A plurality of liquid dispensing tubes are arranged, and a plurality of samples can be collected at the same time and liquid dispensing can be performed through the air intake component.

[0004] A precise micro-liquid dispenser, comprising a piston cylinder, the piston cylinder fixing a handle, characterized in that: a liquid dispensing tube is provided at the lower end of the piston cylinder, and the liquid dispensing tube is connected to an air intake assembly;

[0005] The air intake assembly includes a cylinder, a spring, a blocking rod, a connecting block and a handle, wherein the cylinder is fixedly connected to the upper part of the liquid dispensing tube, the outer end of the cylinder is fixedly connected to the connecting block through the spring, the connecting block fixes the blocking rod, the blocking rod matches the cylinder, and the blocking rod can be inserted into the cylinder;

[0006] The connecting block fixes the handle, and the spring ring covers the blocking rod.

[0007] As a further limitation of the present technical solution, when the spring is in an initial state, the blocking rod is inserted into the cylinder, and the blocking rod can block air from entering the liquid dispensing tube.

[0008] As a further limitation of the technical solution, there are a plurality of liquid dispensing tubes, the liquid dispensing tubes are evenly arranged around the lower end of the piston cylinder, and the liquid dispensing tubes are fixedly connected to the piston cylinder.

[0009] As a further limitation of the present technical solution, the piston cylinder is connected to a pumping assembly, which includes a motor, a screw, a sleeve, a piston block and a symmetrical guide column. The piston block is arranged in the piston cylinder, and the piston block and the piston cylinder match each other. The sleeve is fixed at the upper center of the piston block, and the sleeve is threadedly connected to the screw. The upper end bearing of the screw is connected to the upper end of the piston cylinder, and the upper end of the piston cylinder is fixed with the motor, and the output shaft of the motor fixes the upper end of the piston cylinder.

[0010] As a further limitation of the technical solution, the symmetrical guide posts are fixed on the upper side of the piston block, and the symmetrical guide posts pass through the upper end of the piston cylinder.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] The screw is controlled by a stepper motor to rotate, which enables precise control of the piston block, thereby precisely controlling the amount of liquid extracted;

[0013] Multiple dispensing tubes are provided, which can collect multiple samples and dispensing the samples at the same time, thus improving the working efficiency;

[0014] The matching design of piston cylinder and piston block, as well as the use of guide column, ensure the structural stability and durability of the dispenser;

[0015] The air intake assembly is easy to use and can conveniently intake air to discharge the extracted liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0017] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0018] Figure 2 For the utility model Figure 1 A partial enlarged view of the middle A;

[0019] Figure 3 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0020] Figure 4 It is a schematic diagram of a partial three-dimensional structure of the utility model.

[0021] In the figure: 1-motor, 2-guide column, 3-piston cylinder, 5-cylinder, 6-dispensing tube, 7-spring, 8-connecting block, 9-handle, 10-stop rod, 11-screw, 12-sleeve, 13-piston block, 14-handle. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-Figure 4The utility model is further described with implementation modes.

[0023] The specific embodiments of the present utility model are:

[0024] A precise micro-liquid dispenser, comprising a piston cylinder 3, the piston cylinder 3 fixing a handle 14, a liquid dispensing tube 6 being arranged at the lower end of the piston cylinder 3, and the liquid dispensing tube 6 being connected to an air intake assembly;

[0025] The air intake assembly includes a cylinder 5, a spring 7, a blocking rod 10, a connecting block 8 and a handle 9. The cylinder 5 is fixedly connected to the upper part of the liquid dispensing tube 6. The outer end of the cylinder 5 is fixedly connected to the connecting block 8 through the spring 7. The connecting block 8 fixes the blocking rod 10. The blocking rod 10 matches the cylinder 5 and can be inserted into the cylinder 5.

[0026] The connecting block 8 fixes the handle 9 , and the spring 7 surrounds the blocking rod 10 .

[0027] When the spring 7 is in an initial state, the blocking rod 10 is inserted into the cylinder 5 , and the blocking rod 10 can prevent air from entering the dispensing tube 6 .

[0028] In this embodiment, air is taken in through the air intake assembly, and the air enters the cylinder 5 and then enters the dispensing tube 6. The liquid sucked into the dispensing tube 6 will flow out into a pre-set container below under the action of the inflow of air. When in use, the handle 9 and the connecting block 8 are pulled to drive the baffle rod 10 to move, and the spring 7 is stretched to make the baffle rod 10 separate from the cylinder 5, so that air can enter. When it is necessary to extract liquid, the baffle rod 10 is controlled to be inserted into the cylinder 5, and the spring 7 rebounds. The baffle rod 10 can always be in the cylinder 5 without slipping, thereby preventing air from entering and preventing the liquid in the dispensing tube 6 from being discharged.

[0029] The outer wall of the liquid dispensing tube 6 may be provided with scales for calculating the volume of the extracted liquid.

[0030] There are a plurality of dispensing tubes 6 , which are evenly arranged at the lower end of the piston cylinder 3 . The dispensing tubes 6 are fixedly connected to the piston cylinder 3 .

[0031] In this embodiment, a plurality of liquid dispensing tubes 6 are provided, so that a plurality of samples can be collected and liquid-dispensed at the same time, and a plurality of samples can be collected from one liquid.

[0032] The piston cylinder 3 is connected to the pumping assembly, which includes a motor 1, a screw 11, a sleeve 12, a piston block 13 and a symmetrical guide column 2. The piston block 13 is arranged in the piston cylinder 3, and the piston block 13 and the piston cylinder 3 match each other. The sleeve 12 is fixed to the upper center of the piston block 13, and the sleeve 12 is threadedly connected to the screw 11. The upper end bearing of the screw 11 is connected to the upper end of the piston cylinder 3, and the upper end of the piston cylinder 3 is fixed to the motor 1, and the output shaft of the motor 1 fixes the upper end of the piston cylinder 3.

[0033] The symmetrical guide column 2 is fixed on the upper side of the piston block 13 , and the symmetrical guide column 2 passes through the upper end of the piston cylinder 3 .

[0034] The motor 1 is a stepping motor.

[0035] In this embodiment, in the initial state, the piston block 13 is at the bottom end of the piston cylinder 3, and the liquid sample is extracted by setting a liquid extraction component. When in use, the handle 14 is held, and the liquid dispensing tube 6 is inserted into the container containing the solution, and the motor 1 is turned on. The output shaft of the motor 1 rotates to drive the screw 11 to rotate, and the screw 11 drives the piston cylinder 3 threadedly connected thereto to move upward and drive the piston block 13 to move upward. The piston block 13 drives the guide column 2 to move upward along the circular hole passing through the piston cylinder 3, and the piston block 13 moves upward to extract liquid.

[0036] The use method of this embodiment is: when in use, the liquid extraction component is controlled to extract liquid, and the required discharge of the sample liquid in the liquid dispensing tube is achieved by controlling the air intake of the air intake component.

[0037] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A precise micro-dispenser, comprising a piston cylinder (3), wherein the piston cylinder (3) is fixed with a handle (14), characterized in that: A liquid dispensing tube (6) is provided at the lower end of the piston cylinder (3), and the liquid dispensing tube (6) is connected to an air intake assembly; The air intake assembly comprises a cylinder (5), a spring (7), a blocking rod (10), a connecting block (8) and a handle (9); the cylinder (5) is fixedly connected to the upper part of the liquid dispensing tube (6); the outer end of the cylinder (5) is fixedly connected to the connecting block (8) via the spring (7); the connecting block (8) fixes the blocking rod (10); the blocking rod (10) matches the cylinder (5), and the blocking rod (10) can be inserted into the cylinder (5); The connecting block (8) fixes the handle (9), and the spring (7) surrounds the blocking rod (10).

2. A precise micro-dispenser according to claim 1, characterized in that: When the spring (7) is in an initial state, the blocking rod (10) is inserted into the cylinder (5), and the blocking rod (10) can prevent air from entering the liquid dispensing tube (6).

3. A precise micro-dispenser according to claim 2, characterized in that: There are a plurality of the liquid dispensing tubes (6), and the liquid dispensing tubes (6) are evenly arranged around the circumference of the lower end of the piston cylinder (3). The liquid dispensing tubes (6) are fixedly connected to the piston cylinder (3).

4. A precise micro-dispenser according to claim 1, characterized in that: The piston cylinder (3) is connected to a pumping assembly, which includes a motor (1), a screw (11), a sleeve (12), a piston block (13) and a symmetrical guide column (2). The piston block (13) is arranged in the piston cylinder (3). The piston block (13) and the piston cylinder (3) match each other. The sleeve (12) is fixed at the center of the upper side of the piston block (13). The sleeve (12) is threadedly connected to the screw (11). The upper end bearing of the screw (11) is connected to the upper end of the piston cylinder (3). The upper end of the piston cylinder (3) is fixed to the motor (1). The output shaft of the motor (1) is fixed to the upper end of the piston cylinder (3).

5. A precise micro-dispenser according to claim 4, characterized in that: The symmetrical guide column (2) is fixed on the upper side of the piston block (13), and the symmetrical guide column (2) passes through the upper end of the piston cylinder (3).

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