Visual quantitative liquid metering device

Abstract

The utility model relates to the technical field of metering devices, and discloses a visual quantitative liquid metering device which comprises a supporting frame, a measuring cylinder is fixedly connected to the upper end of the supporting frame, fixing rods are fixedly connected to the two sides of the upper end of the measuring cylinder, and a top plate is fixedly connected to the upper ends of the two fixing rods. The center of the lower end of the top plate is rotationally connected with a lifting screw rod, the outer wall of the lifting screw rod is sleeved with a lifting sleeve in a threaded mode, and the lower end of the lifting sleeve is fixedly connected with a connecting plate. According to the utility model, when liquid is discharged, liquid in the measuring cylinder can be quantitatively discharged by controlling the piston to move at a fixed distance without a dumping device, so that the liquid can be effectively prevented from being poured out of a container to be filled, and automatic liquid injection operation can be carried out on the measuring cylinder by starting the infusion pump; and redundant liquid can flow back into the original container from the liquid return opening and the liquid return pipe, so that the liquid in the barrel is controlled to reach the specified volume, and subsequent accurate metering and liquid discharging are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of metering devices, in particular to an intuitive quantitative liquid metering device. Background Art

[0002] When doing experiments or in industrial production, a certain volume of liquid is measured. Generally, tools such as measuring cylinders, measuring cups, and measuring bottles are used to ensure the precise control and management of the amount of liquid during the experiment and production process, thereby improving the accuracy of experimental results and production quality.

[0003] The traditional method of use is to manually pour the liquid from one container into another container by the operator, which requires the operator to have certain skills. Otherwise, it is easy to pour the liquid outside the container, resulting in inaccurate measurement. In addition, the bottle is in a non-horizontal state when pouring, and it is troublesome and inaccurate to observe the scale. It is difficult to control the amount of liquid poured, and when the initial liquid is injected into the measuring instrument, it is not easy to quickly and accurately determine the injection amount, which can easily lead to large errors in subsequent quantitative liquid extraction. Therefore, the technical personnel in this field provide an intuitive quantitative liquid metering device to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the present utility model is to solve the shortcomings existing in the prior art, and to propose an intuitive quantitative liquid metering device. When discharging liquid, the liquid in the cylinder can be quantitatively discharged according to the required requirements by controlling the piston to move a fixed distance, and no pouring device is required, which can effectively prevent the liquid from pouring out of the container to be contained, and is also convenient for accurate observation of the scale. The measuring cylinder can be automatically filled with liquid by starting the infusion pump, and if the initially injected liquid exceeds the predetermined volume, the piston can be controlled to move a fixed distance to return the excess liquid from the return port and the return pipe to the original container, thereby controlling the liquid in the cylinder to reach the specified volume, which is convenient for subsequent precise metering and discharge.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an intuitive quantitative liquid metering device, comprising a support frame, the upper end of the support frame is fixedly connected to a measuring cylinder, both sides of the upper end of the measuring cylinder are fixedly connected to fixing rods, the upper ends of the two fixing rods are fixedly connected to a top plate, the lower end center of the top plate is rotatably connected to a lifting screw, the outer wall of the lifting screw is threadedly sleeved with a lifting sleeve, the lower end of the lifting sleeve is fixedly connected to a connecting plate, the lower end of the connecting plate is fixedly connected to a piston, and the lower end of the measuring cylinder is fixedly connected to a liquid discharge port;

[0006] An infusion pump and a liquid return port are fixedly connected to the rear of the outer wall of the measuring cylinder, an infusion tube is fixedly connected to the upper end of the infusion pump, and a liquid extraction tube is fixedly connected to the rear end of the infusion pump;

[0007] Through the above technical solution, when discharging liquid, the piston can be controlled to move a certain distance according to the required requirements, so that the liquid in the cylinder can be discharged quantitatively. The measuring cylinder can be automatically filled with liquid by starting the infusion pump, and if the initially injected liquid exceeds the predetermined volume, the piston can be controlled to move a certain distance to return the excess liquid from the return port and the return pipe to the original container.

[0008] Further, the lower end of the top plate is fixedly connected to a limiting sleeve near the lifting sleeve, the lifting sleeve is movably arranged in the limiting sleeve, limiting grooves are provided on both sides of the inner wall of the limiting sleeve, and limiting blocks are fixedly connected to both sides of the outer wall of the lifting sleeve, and the two limiting blocks are slidably arranged in the corresponding limiting grooves;

[0009] Through the above technical solution, by providing the limiting sleeve, the limiting block and the limiting groove, the lifting sleeve can be effectively restricted, so that the lifting sleeve can be stably lifted and lowered.

[0010] Furthermore, a driving motor is fixedly arranged at the center of the upper end of the top plate, and the output end of the driving motor passes through the top plate and is fixedly connected to the lifting screw rod;

[0011] According to the technical solution, a driving motor is provided, and the output end of the driving motor is fixedly connected to the lifting screw rod, so that the lifting screw rod can be rotated by starting the driving motor.

[0012] Furthermore, the lower end of the liquid discharge port penetrates the support frame to the outside, and a first solenoid valve is fixedly provided on the outer wall of the liquid discharge port;

[0013] Through the above technical solution, by passing the lower end of the discharge port through the support frame to the outside and providing a first solenoid valve, when discharging liquid, the first solenoid valve can be controlled to open so that the liquid in the cylinder is discharged through the discharge port.

[0014] Furthermore, a second solenoid valve is fixedly provided on the outer wall of the liquid return port, and a liquid return pipe is fixedly connected to the rear end of the liquid return port;

[0015] Through the above technical solution, by providing a second solenoid valve and a liquid return pipe, when the initially injected liquid exceeds a predetermined volume, the second solenoid valve can be controlled to open and cooperate with the movement of the piston, so that the excess liquid can flow back into the original container from the liquid return port and the liquid return pipe.

[0016] Furthermore, one end of the infusion tube passes through the connecting plate and the piston into the measuring cylinder;

[0017] Through the above technical solution, one end of the infusion tube is passed through the connecting plate and the piston into the measuring cylinder, thereby enabling liquid to be smoothly injected into the measuring cylinder.

[0018] Furthermore, a perspective window and scale lines are provided at the front of the outer wall of the measuring cylinder;

[0019] Through the above technical solution, by providing the perspective window and the scale lines, it is convenient for the operator to observe the volume of the liquid injected into the measuring cylinder.

[0020] The utility model has the following beneficial effects:

[0021] 1. The utility model proposes an intuitive quantitative liquid metering device. When discharging liquid, according to the required requirements, the first solenoid valve can be controlled to open and the driving motor can be controlled to start so that the piston moves a fixed distance, so that the liquid in the cylinder can be quantitatively discharged, and the remaining liquid can be observed and measured through the provided perspective window and scale lines. In addition, during the liquid discharging process, no pouring device is required, so that the liquid can be effectively prevented from being poured out of the container to be contained, and it is also convenient to accurately observe the scale.

[0022] 2. The utility model proposes an intuitive quantitative liquid metering device, which controls the start of the infusion pump, extracts the required liquid from the original container through the provided extraction tube and the infusion tube and delivers it to the measuring cylinder. Through the provided perspective window and scale lines, the operator can observe the volume of the liquid injected into the measuring cylinder. If the initially injected liquid exceeds the predetermined volume, the second solenoid valve can be controlled to open, and the piston can be controlled to move downward by starting the drive motor, so that the excess liquid can flow back from the return port and the return tube to the original container, thereby controlling the liquid in the cylinder to reach the specified volume, which is convenient for subsequent precise metering and discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a partial axonometric diagram of an intuitive quantitative liquid metering device proposed by the utility model;

[0024] Figure 2 This is a front cross-sectional schematic diagram of an intuitive quantitative liquid metering device proposed by the utility model;

[0025] Figure 3 for Figure 2 A schematic diagram of the structure enlargement at the center A;

[0026] Figure 4 A side cross-sectional schematic diagram of an intuitive quantitative liquid metering device proposed by the utility model;

[0027] Figure 5 The utility model is a top view schematic diagram of an intuitive quantitative liquid metering device.

[0028] Legend:

[0029] 1. Support frame; 2. Measuring cylinder; 3. Perspective window; 4. Graduation line; 5. Fixed rod; 6. Top plate; 7. Lifting screw rod; 8. Lifting sleeve; 9. Connecting plate; 10. Piston; 11. Driving motor; 12. Discharge port; 13. First solenoid valve; 14. Infusion pump; 15. Infusion tube; 16. Extraction tube; 17. Return port; 18. Second solenoid valve; 19. Return tube; 20. Limit sleeve; 21. Limit groove; 22. Limit block. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the specific implementation of the utility model to clearly and completely describe the technical solutions in the specific implementation of the utility model. Obviously, the specific implementation described is only a part of the specific implementation of the utility model, not all of the specific implementation. Based on the specific implementation of the utility model, all other specific implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Reference Figure 1-5The utility model provides a specific implementation mode: an intuitive quantitative liquid metering device, including a support frame 1, a measuring cylinder 2 is fixedly connected to the upper end of the support frame 1, and a perspective window 3 and a scale line 4 are arranged at the front of the outer wall of the measuring cylinder 2. The perspective window 3 and the scale line 4 are arranged to facilitate the operator to observe the volume of the liquid injected into the measuring cylinder 2. The upper ends of the measuring cylinder 2 are fixedly connected with fixed rods 5, and the upper ends of the two fixed rods 5 are fixedly connected with a top plate 6. The lower end center of the top plate 6 is rotatably connected with a lifting screw rod 7. A driving motor 11 is fixedly arranged at the upper end center of the top plate 6. The output end of the driving motor 11 passes through the top plate 6 and is fixedly connected to the lifting screw rod 7. By providing a driving motor 11 and fixing the output end of the driving motor 11 with the lifting screw rod 7, the lifting screw rod 7 can be rotated by starting the driving motor 11. The outer wall of the lifting screw rod 7 is threadedly sleeved with a lifting sleeve 8, and the lower end of the lifting sleeve 8 is fixedly connected with a connecting plate 9. The lower end of the connecting plate 9 is fixedly connected with a piston 10, and the lower end of the top plate 6 is fixedly connected with a limiting sleeve 20 near the lifting sleeve 8. The lifting sleeve 8 is movably arranged in the limiting sleeve 20. The limiting grooves 21 are provided on both sides of the inner wall of the limiting sleeve 20, and the limiting blocks 22 are fixedly connected on both sides of the outer wall of the lifting sleeve 8. The two limiting blocks 22 are slidably arranged in the corresponding limiting grooves 21. By providing the limiting sleeve 20, the limiting blocks 22 and the limiting grooves 21, the lifting sleeve 8 can be effectively restricted, so that the lifting sleeve 8 can be stably lifted and lowered. The lower end of the measuring cylinder 2 is fixedly connected with a discharge port 12, and the lower end of the discharge port 12 passes through the support frame 1 to the outside world. The outer wall of the discharge port 12 is fixedly provided with a first solenoid valve 13. By passing the lower end of the discharge port 12 through the support frame 1 to the outside world, and providing the first solenoid valve 13, when discharging, the first solenoid valve 13 can be controlled to open, so that the liquid in the cylinder is discharged through the discharge port 12;

[0032] An infusion pump 14 and a liquid return port 17 are fixedly connected to the rear part of the outer wall of the measuring cylinder 2, and an infusion tube 15 is fixedly connected to the upper end of the infusion pump 14. One end of the infusion tube 15 passes through the connecting plate 9 and the piston 10 to the measuring cylinder 2. By passing one end of the infusion tube 15 through the connecting plate 9 and the piston 10 to the measuring cylinder 2, liquid can be smoothly injected into the measuring cylinder 2. A liquid extraction tube 16 is fixedly connected to the rear end of the infusion pump 14, and a second solenoid valve 18 is fixedly provided on the outer wall of the liquid return port 17. A liquid return pipe 19 is fixedly connected to the rear end of the liquid return port 17. By providing the second solenoid valve 18 and the liquid return pipe 19, when the initially injected liquid exceeds the predetermined volume, the second solenoid valve 18 can be controlled to open and cooperate with the movement of the piston 10, so that the excess liquid can flow back to the original container from the liquid return port 17 and the liquid return pipe 19.

[0033] Working principle: When in use, the infusion pump 14 can be controlled to start, and the required liquid can be extracted from the original container and transported to the measuring cylinder 2 through the provided extraction tube 16 and the infusion tube 15. Through the provided perspective window 3 and the scale line 4, the operator can observe the volume of the liquid injected into the measuring cylinder 2. If the initially injected liquid exceeds the predetermined volume, the second solenoid valve 18 can be controlled to open and the driving motor 11 can be started to rotate the lifting screw 7, and the lifting sleeve 8 can move the piston 10 downward through the provided limit block 22 and the limit groove 21, so that the excess liquid can flow back to the original container from the return port 17 and the return pipe 19, so as to control the liquid in the cylinder to reach the specified volume, which is convenient for subsequent precise measurement and discharge. When discharging, the first solenoid valve 13 can be controlled to open according to the required requirements, and the driving motor 11 can be controlled to start so that the piston 10 moves a certain distance, so that the liquid in the cylinder can be quantitatively discharged, and the remaining liquid can be observed and measured through the provided perspective window 3 and the scale line 4.

[0034] Finally, it should be noted that the above is only a preferred specific implementation method of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned specific implementation methods, those skilled in the art can still modify the technical solutions recorded in the aforementioned specific implementation methods, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A visual quantitative liquid metering device, comprising a support frame (1), characterized in that: The upper end of the support frame (1) is fixedly connected to a measuring cylinder (2), both sides of the upper end of the measuring cylinder (2) are fixedly connected to fixing rods (5), the upper ends of the two fixing rods (5) are fixedly connected to a top plate (6), the lower end center of the top plate (6) is rotatably connected to a lifting screw (7), the outer wall of the lifting screw (7) is threadedly sleeved with a lifting sleeve (8), the lower end of the lifting sleeve (8) is fixedly connected to a connecting plate (9), the lower end of the connecting plate (9) is fixedly connected to a piston (10), and the lower end of the measuring cylinder (2) is fixedly connected to a liquid discharge port (12); An infusion pump (14) and a liquid return port (17) are fixedly connected to the rear of the outer wall of the measuring cylinder (2); an infusion tube (15) is fixedly connected to the upper end of the infusion pump (14); and a liquid extraction tube (16) is fixedly connected to the rear end of the infusion pump (14).

2. The intuitive quantitative liquid metering device according to claim 1, characterized in that: The lower end of the top plate (6) is fixedly connected to a limiting sleeve (20) near the lifting sleeve (8); the lifting sleeve (8) is movably arranged in the limiting sleeve (20); limiting grooves (21) are provided on both sides of the inner wall of the limiting sleeve (20); limiting blocks (22) are fixedly connected to both sides of the outer wall of the lifting sleeve (8); and the two limiting blocks (22) are slidably arranged in the corresponding limiting grooves (21).

3. The intuitive quantitative liquid metering device according to claim 1, characterized in that: A driving motor (11) is fixedly arranged at the center of the upper end of the top plate (6), and the output end of the driving motor (11) passes through the top plate (6) and is fixedly connected to the lifting screw rod (7).

4. The intuitive quantitative liquid metering device according to claim 1, characterized in that: The lower end of the liquid discharge port (12) penetrates the support frame (1) to the outside, and a first solenoid valve (13) is fixedly arranged on the outer wall of the liquid discharge port (12).

5. The intuitive quantitative liquid metering device according to claim 1, characterized in that: A second solenoid valve (18) is fixedly arranged on the outer wall of the liquid return port (17), and a liquid return pipe (19) is fixedly connected to the rear end of the liquid return port (17).

6. The intuitive quantitative liquid metering device according to claim 1, characterized in that: One end of the infusion tube (15) passes through the connecting plate (9) and the piston (10) and reaches the inside of the measuring cylinder (2).

7. The intuitive quantitative liquid metering device according to claim 1, characterized in that: A perspective window (3) and scale lines (4) are provided at the front of the outer wall of the measuring cylinder (2).

Images