A high-precision liquid medicine constant volume device

Abstract

The utility model belongs to the field of experimental apparatus provides a kind of high accuracy of liquid setting device, including liquid storage cylinder, cylinder cover, connecting mechanism, float piece, shielding piece and telescopic adjusting mechanism, cylinder cover is equipped on the upper cover of liquid storage cylinder, the middle part of cylinder cover is equipped with liquid injection hole, the both sides of cylinder cover top are symmetrically provided with connecting frame, two groups of connecting frame are provided with the connecting mechanism connected with liquid storage cylinder, the both sides of the bottom of liquid storage cylinder are symmetrically provided with guide shaft, two groups of guide shaft bottom end are threadedly connected with baffle, float piece and shielding piece are movably arranged between two groups of guide shaft, shielding piece is located above float piece, telescopic adjusting mechanism for adjusting the distance between shielding piece and float piece is arranged between shielding piece and float piece;The utility model is by setting telescopic adjusting mechanism, the flexible adjustment of constant volume is realized, so that the device can flexibly adjust constant volume according to actual demand, improve the use convenience and adaptability of device.

Description

Technical Field

[0001] This utility model belongs to the field of experimental instruments, specifically a highly accurate liquid volume adjustment device. Background Technology

[0002] A liquid volume control device is a widely used device in the fields of pharmaceuticals, chemicals, and biotechnology. It is mainly used to accurately adjust the volume of liquid medicine or other liquids to a specific volume to ensure product quality, dosage accuracy, and consistency of the production process. The graduated cylinder volume control device is one such device. It usually consists of a graduated cylinder and a valve that controls the flow of liquid medicine. The operator slowly pours the liquid medicine into the graduated cylinder while observing the liquid level. When the liquid level reaches the required graduation mark, the valve is closed to complete the volume control operation.

[0003] A search revealed a Chinese patent with publication number CN220104215U, which describes a volume-regulating device for detecting linezolid drug concentration in plasma. The device's volume-regulating component adds a solution or reagent to a test tube, which then flows into the test tube through a leak. The buoyancy of the liquid acts on a float, causing the float to rise continuously with the volume. When the specified volume is reached, the float comes into contact with the leak, thus achieving volume regulation and controlling the solution volume.

[0004] However, the fixed volume of the aforementioned constant volume device is determined by the position of the float and the position of the discharge port. These positions are fixed after the device is manufactured, which makes it impossible to adjust the fixed volume according to actual needs, resulting in low overall flexibility in use.

[0005] To address this issue, those skilled in the art have proposed a highly accurate liquid volume adjustment device to solve the problems raised in the background art. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a highly accurate liquid volume adjustment device.

[0007] A high-precision liquid volume control device includes a storage cylinder, a cylinder cover, a connecting mechanism, a float component, a shielding component, and a telescopic adjustment mechanism. The storage cylinder is covered with a cylinder cover, and an injection hole is opened in the middle of the cylinder cover. Connecting frames are symmetrically arranged on both sides of the top of the cylinder cover. Each of the two sets of connecting frames is equipped with a connecting mechanism that connects to the storage cylinder. Guide shafts are symmetrically arranged on both sides of the bottom of the storage cylinder. Baffles are threaded to the bottom ends of the two sets of guide shafts. A float component and a shielding component are movably arranged between the two sets of guide shafts. The shielding component is located above the float component. A telescopic adjustment mechanism for adjusting the distance between the shielding component and the float component is provided.

[0008] Preferably, the connecting mechanism includes a pull shaft, an arc-shaped plate, a limiting member, a compression spring, and a handle. The arc-shaped plate is slidably disposed on the inner side of the connecting frame through the limiting member. A pull shaft is disposed in the middle of the side of the arc-shaped plate. One end of the pull shaft passes through the connecting frame and is connected to a handle. A compression spring is sleeved on the pull shaft and located between the connecting frame and the arc-shaped plate.

[0009] Preferably, the limiting component includes a crossbeam and a limiting sleeve. Both ends of the side of the arc-shaped plate are connected to the crossbeam, and both sides of the connecting frame are connected to the limiting sleeve for the crossbeam to pass through.

[0010] Preferably, the float component includes a float plate, a connecting shaft, and a float cylinder. The float plate is slidably connected between two sets of guide shafts. Multiple sets of connecting shafts are linearly and equidistantly arranged on both sides of the float plate, and one end of each set of connecting shafts is connected to a float cylinder.

[0011] Preferably, the shielding component includes a connecting ear and a hemispherical block. Connecting ears located above the float are slidably disposed on both sets of guide shafts, and a hemispherical block is connected between the two sets of connecting ears. The diameter of the hemispherical block is larger than the diameter of the injection hole.

[0012] Preferably, the telescopic adjustment mechanism includes a threaded rod, a nut sleeve, and a throttle. The threaded rod, which is vertically arranged, passes through the middle of the hemispherical stop. The throttle is connected to the top of the threaded rod. The nut sleeve is connected to the top of the float plate. The nut sleeve is threadedly connected to the threaded rod.

[0013] Preferably, the middle part of the cap is provided with a concave arc-shaped structure, which serves to guide the flow during liquid injection.

[0014] Preferably, the liquid storage cylinder is made of transparent glass, and scale lines are engraved on the outer wall of the liquid storage cylinder.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This utility model achieves flexible adjustment of the fixed volume by setting a telescopic adjustment mechanism. By rotating the handle at the top of the threaded rod, the depth of the threaded rod in the nut cylinder can be changed, thereby adjusting the distance between the float and the blocking part. Since the device completes the fixed volume adjustment when the float rises with the liquid level to contact the blocking part and the hemispherical block blocks the injection hole on the cylinder cover, adjusting the distance between the float and the blocking part is equivalent to changing the liquid level height during the fixed volume adjustment, thereby realizing the adjustment of the fixed volume. This allows the device to flexibly adjust the fixed volume according to actual needs, improving the ease of use and adaptability of the device.

[0017] 2. The design of the connecting mechanism of this utility model allows the cap to be securely placed on the liquid storage cylinder. The arc-shaped plate fits tightly against the liquid storage cylinder under the action of the compression spring. It can be easily installed and removed through the pull shaft and handle, which facilitates cleaning, maintenance and replacement of parts of the device, ensuring long-term stable operation of the device and providing a guarantee for the accuracy of volume determination. The liquid storage cylinder is made of transparent glass and has scale lines engraved on the outer wall. Operators can intuitively understand the liquid level of the medicine by observing the scale lines, which helps to judge the volume determination process and further improves the accuracy of volume determination. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the injection hole in the open state of this utility model;

[0019] Figure 2 This is a structural diagram of the injection hole sealing state of this utility model;

[0020] Figure 3 This utility model Figure 2 Side sectional view;

[0021] Figure 4 This is a partial structural diagram of the present invention.

[0022] In the picture:

[0023] 1. Liquid reservoir; 2. Cap; 3. Injection hole; 4. Connecting frame; 5. Guide shaft; 6. Baffle; 7. Pull shaft; 8. Arc plate; 9. Compression spring; 10. Handle; 11. Crossbeam; 12. Limit sleeve; 13. Float plate; 14. Coupling shaft; 15. Float; 16. Connecting lug; 17. Hemispherical stop block; 18. Threaded rod; 19. Nut sleeve; 20. Turning handle. Detailed Implementation

[0024] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0025] As attached Figure 1 To be continued Figure 4 As shown:

[0026] This utility model provides a highly accurate liquid volume control device, including a storage cylinder 1, a cylinder cover 2, a connecting mechanism, a float component, a shielding component, and a telescopic adjustment mechanism. The storage cylinder 1 is covered with a cylinder cover 2, and a liquid injection hole 3 is opened in the middle of the cylinder cover 2. Connecting frames 4 are symmetrically arranged on both sides of the top of the cylinder cover 2. Each of the two sets of connecting frames 4 is equipped with a connecting mechanism that connects to the storage cylinder 1. Guide shafts 5 are symmetrically arranged on both sides of the bottom of the storage cylinder 1. Baffles 6 are threadedly connected to the bottom ends of the two sets of guide shafts 5. A float component and a shielding component are movably arranged between the two sets of guide shafts 5. The shielding component is located above the float component. A telescopic adjustment mechanism for adjusting the distance between the shielding component and the float component is provided.

[0027] refer to Figure 1 The connecting mechanism includes a pull shaft 7, an arc plate 8, a limiting member, a compression spring 9, and a handle 10. The arc plate 8 is slidably disposed on the inner side of the connecting frame 4 through the limiting member. The pull shaft 7 is disposed in the middle of the side of the arc plate 8. One end of the pull shaft 7 passes through the connecting frame 4 and is connected to the handle 10. The compression spring 9 is sleeved on the pull shaft 7 between the connecting frame 4 and the arc plate 8.

[0028] When it is necessary to open the cap 2, pull the handle 10. The pull shaft 7 drives the arc plate 8 to move outward against the elastic force of the compression spring 9, so that the arc plate 8 is separated from the liquid storage cylinder 1, and the cap 2 can be removed from the liquid storage cylinder 1. When it is necessary to close the cap 2, pull the handle 10, place the cap 2 on the liquid storage cylinder 1, release the handle 10, and under the elastic force of the compression spring 9, the arc plate 8 moves inward and fits tightly against the liquid storage cylinder 1, so as to achieve a stable connection between the cap 2 and the liquid storage cylinder 1, which facilitates the cleaning and maintenance of the components at the bottom of the cap 2.

[0029] refer to Figure 1 The limiting components include a crossbeam 11 and a limiting sleeve 12. Both ends of the side of the arc plate 8 are connected to the crossbeam 11, and both sides of the connecting frame 4 are connected to the limiting sleeve 12 for the crossbeam 11 to pass through.

[0030] The crossbeam 11 slides within the limiting sleeve 12, restricting the movement direction of the arc plate 8, so that it can only move in a straight line along the inner side of the connecting frame 4, preventing the arc plate 8 from shifting or shaking during movement.

[0031] refer to Figure 3 The float assembly includes a float plate 13, a connecting shaft 14, and a float 15. The float plate 13 is slidably connected between two sets of guide shafts 5. Multiple sets of connecting shafts 14 are linearly and equidistantly arranged on both sides of the float plate 13, and one end of each set of connecting shafts 14 is connected to a float 15.

[0032] The float 13 is slidably connected between the two sets of guide shafts 5 and can rise with the rise of the liquid level. The float 15 further provides buoyancy, so that the float can float on the liquid level and slide on the guide shaft 5 through the float 13.

[0033] refer to Figure 2 and Figure 4 The shielding component includes a connecting ear 16 and a hemispherical block 17. The connecting ear 16 located above the float plate 13 is slidably disposed on both sets of guide shafts 5. The hemispherical block 17 is connected between the two sets of connecting ears 16. The diameter of the hemispherical block 17 is larger than the diameter of the injection hole 3.

[0034] The hemispherical block 17 is connected to the float via a telescopic adjustment mechanism. When the float rises to a certain position, it can drive the hemispherical block 17 to block the injection hole 3 on the cylinder cover 2, preventing the liquid from being injected further, thereby achieving a constant volume.

[0035] refer to Figure 4 The telescopic adjustment mechanism includes a threaded rod 18, a nut sleeve 19, and a throttle 20. The hemispherical stop 17 is rotatably penetrated by the vertically arranged threaded rod 18. The top of the threaded rod 18 is connected to the throttle 20. The top of the float 13 is connected to the nut sleeve 19, which is threadedly connected to the threaded rod 18.

[0036] In this process, by rotating the handle 20, the threaded rod 18 rotates inside the nut cylinder 19, thereby changing the depth of the threaded rod 18 inside the nut cylinder 19 and adjusting the distance between the float and the blocking part. Since the device completes the volume adjustment when the float rises with the liquid level to contact the blocking part and the hemispherical block 17 blocks the injection hole 3 on the cylinder cover 2, adjusting the distance between the float and the blocking part is equivalent to changing the liquid level height of the liquid during the volume adjustment, thereby realizing the adjustment of the volume, and the adjustment method is simple.

[0037] refer to Figure 1 The middle part of the cap 2 is designed with a concave arc-shaped structure, which is used to guide the flow during liquid injection.

[0038] The concave arc-shaped structure reduces splashing of the medicine during the injection process, avoiding waste and environmental pollution.

[0039] refer to Figure 1 The liquid storage cylinder 1 is made of transparent glass, and scale lines are engraved on the outer wall of the liquid storage cylinder 1.

[0040] The combination of transparent glass and graduated lines allows operators to monitor the liquid level changes in real time, adjust the injection speed or stop the injection in a timely manner, thus improving the accuracy and convenience of the operation.

[0041] Working principle: First, the cap 2 is stably placed on the storage cylinder 1 via the connecting mechanism. Pulling the handle 10 causes the arc plate 8 to move outward against the spring force of the compression spring 9. After the cap 2 is in place, the handle 10 is released. Under the action of the spring force of the compression spring 9, the arc plate 8 moves inward to tightly fit the storage cylinder 1, achieving a stable connection. Then, the medicine is slowly injected into the storage cylinder 1 through the injection hole 3. The medicine flows smoothly into the storage cylinder 1 through the concave arc structure in the middle of the cap 2. The float plate 13 in the float assembly is guided by the guide shaft. 5 rises with the liquid level of the medicine. The float 15 provides buoyancy to help the float float stably. As the medicine is continuously injected, when the float rises to a certain height, it will drive the hemispherical block 17 to block the injection hole 3 and prevent the medicine from being injected further. At this time, the operator can observe the liquid level of the medicine in real time through the scale lines engraved on the outer wall of the transparent glass storage cylinder 1 to confirm that the volume has been adjusted. After that, the cylinder cover 2 can be opened by pulling the handle 10 to clean and maintain the bottom components of the cylinder cover 2.

[0042] The embodiments of this utility model are given for the purpose of illustration and description. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the utility model. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this utility model, which is defined by the appended claims and their equivalents.

Claims

1. A high-precision liquid medicine constant volume device, characterized in that, The system includes a storage cylinder (1), a cylinder cover (2), a connecting mechanism, a float, a shield, and a telescopic adjustment mechanism. The storage cylinder (1) is covered with a cylinder cover (2), and a liquid injection hole (3) is opened in the middle of the cylinder cover (2). Connecting frames (4) are symmetrically arranged on both sides of the top of the cylinder cover (2). A connecting mechanism that connects to the storage cylinder (1) is provided on both sets of connecting frames (4). Guide shafts (5) are symmetrically arranged on both sides of the bottom of the storage cylinder (1). Baffles (6) are threadedly connected to the bottom ends of both sets of guide shafts (5). A float and a shield are movably arranged between the two sets of guide shafts (5). The shield is located above the float. A telescopic adjustment mechanism for adjusting the distance between the shield and the float is provided between the shield and the float.

2. The high-precision liquid medicine volume setting device according to claim 1, characterized in that: The connecting mechanism includes a pull shaft (7), an arc plate (8), a limiting member, a compression spring (9), and a handle (10). The arc plate (8) is slidably disposed on the inner side of the connecting frame (4) through the limiting member. A pull shaft (7) is disposed in the middle of the side of the arc plate (8). One end of the pull shaft (7) passes through the connecting frame (4) and is connected to the handle (10). A compression spring (9) is sleeved on the pull shaft (7) between the connecting frame (4) and the arc plate (8).

3. The high-precision liquid medicine volume setting device according to claim 2, characterized in that: The limiting components include a crossbeam (11) and a limiting sleeve (12). The two ends of the side of the arc plate (8) are connected to the crossbeam (11), and the two sides of the connecting frame (4) are connected to the limiting sleeve (12) through which the crossbeam (11) passes.

4. The high-precision liquid medicine volume setting device according to claim 1, characterized in that: The float assembly includes a float plate (13), a connecting shaft (14), and a float (15). The float plate (13) is slidably connected between two sets of guide shafts (5). Multiple sets of connecting shafts (14) are linearly and equidistantly arranged on both sides of the float plate (13), and one end of each set of connecting shafts (14) is connected to a float (15).

5. The high-precision liquid volume adjustment device as described in claim 4, characterized in that: The shielding component includes a connecting ear (16) and a hemispherical block (17). The connecting ear (16) located above the float plate (13) is slidably provided on both sets of guide shafts (5). The hemispherical block (17) is connected between the two sets of connecting ears (16). The diameter of the hemispherical block (17) is larger than the diameter of the injection hole (3).

6. The high-precision liquid medicine volume setting device according to claim 5, characterized in that: The telescopic adjustment mechanism includes a threaded rod (18), a nut sleeve (19), and a throttle (20). The hemispherical stop (17) is rotatably penetrated by the vertically arranged threaded rod (18). The top of the threaded rod (18) is connected to the throttle (20). The top of the float (13) is connected to the nut sleeve (19), and the nut sleeve (19) is threadedly connected to the threaded rod (18).

7. The high-precision liquid medicine volume setting device according to claim 1, characterized in that: The middle part of the cap (2) is set as a concave arc structure, which is used to guide the flow during liquid injection.

8. The high-precision liquid medicine volume setting device according to claim 1, characterized in that: The liquid storage cylinder (1) is made of transparent glass, and scale lines are engraved on the outer wall of the liquid storage cylinder (1).

Images