A porous quantitative and rapid liquid adding device

Abstract

The present invention discloses a porous quantitative rapid liquid adding device, belonging to the technical field of quantitative liquid adding devices. The liquid adding device mainly comprises a quantitative hopper, an overflow tank, a liquid retaining edge, an overflow hose, an anti-overflow device, a drain overflow device, a liquid adding device, a handle, a front support cavity, a rear support cavity and a transition support cavity; during the use process, the porous quantitative rapid liquid adding device is placed on a horizontal platform, the liquid to be added is poured into the quantitative hopper until the liquid in the overflow tank is higher than the overflow hose and then the liquid adding is stopped. After starting the drain overflow device to make the liquid in the overflow tank flow into the recycler, the anti-overflow device is started to jack up all the overflow hoses to prevent liquid from flowing out or overflowing when the porous quantitative rapid liquid adding device is moved next. Then the liquid adding device is started to add all the liquid in the quantitative hopper into the corresponding test tube to be filled with liquid, and the liquid adding device is reset to complete the liquid adding. The liquid adding device of the present invention has the advantages of flexible movement, convenient operation, accurate quantification, high efficiency and rapidness, etc.

Description

Technical Field

[0001] The present invention belongs to the technical field of quantitative liquid adding devices, and particularly relates to a device for quantitatively adding liquid to test tubes in a standard test tube tray during laboratory and production processes, especially a rapid manual liquid adding device for mycoplasma inspection in the quality control of biological vaccine production. Background Art

[0002] Since 2001, with the continuous improvement of the national living standard, people have paid more and more attention to physical and mental health and hygiene and epidemic prevention, and the vaccine industry has received unprecedented attention and rapid development in society. However, with the rapid development of the vaccine industry and the continuous increase in social demand, the output of vaccine production enterprises has also been continuously climbing. During the process of rapid output growth, various new situations and problems have emerged in an endless stream. In this context, the importance and pressure of quality inspection have doubled accordingly. The previous method of manually adding liquid to each test tube one by one is particularly cumbersome. Not only is the work efficiency low and the labor intensity high, but more importantly, due to the large influence of human factors, proficiency factors, etc., the quantitative accuracy is relatively low. Therefore, it is particularly important to improve the accuracy and efficiency of quantitative liquid adding. The conventional solution is to introduce large-scale automated equipment, but such large-scale automated equipment has problems such as not only a large one-time investment, high power consumption, but more importantly, occupying a large space and requiring a fixed place, etc., and is not suitable for the quality inspection of laboratories. There has been no report on the related research and development of a liquid adding device that can be flexibly moved, is easy to operate, has accurate quantification, and is efficient and fast. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a porous quantitative rapid liquid adding device, which is applicable to quantitatively adding liquid to test tubes in a standard test tube tray during laboratory and production, especially for quantitative liquid adding during the mycoplasma inspection process in the quality control of biological vaccine production. It can not only prevent the interference of human factors, but also add liquid to multiple test tubes at the same time. In this way, on the premise of ensuring the accuracy of the liquid addition amount, it is possible to quickly add liquid to multiple test tubes at the same time, realize simple operation and rapid liquid adding, reduce the labor intensity, and greatly improve the efficiency and accuracy of quality inspection.

[0004] The purpose of the present invention is achieved in the following way:

[0005] The present invention provides a porous quantitative rapid liquid adding device, which mainly includes a quantitative hopper 1, an overflow tank 2, a liquid blocking edge 3, an overflow hose 4, an anti-overflow device 5, a drain overflow device 6, a liquid adding device 7, a handle 8, a front support cavity 9, a rear support cavity 10 and a transition support cavity 11. The front support cavity 9 is connected to the rear support cavity 10 through the overflow tanks 2 on both sides, enclosing the structural framework of the porous quantitative rapid liquid adding device. Two or more rows of quantitative hoppers 1 are fixed inside the structural framework through the liquid blocking edges 3 at their tops. The liquid blocking edges 3 between adjacent quantitative hoppers 1 are connected to each other. An overflow hose 4 penetrating the liquid blocking edge 3 is arranged in the middle of the liquid blocking edge 3 connecting the quantitative hopper 1 and the overflow tank 2 and the liquid blocking edge 3 connecting adjacent rows of quantitative hoppers 1, so that the excess liquid in the quantitative hopper 1 flows through the liquid blocking edge 3 through the overflow hose 4 and overflows into the overflow tank 2. The other end of the rear support cavity 10 is connected to the transition support cavity 11, and the other end of the transition support cavity 11 is connected to the upper end of the handle 8 in the vertical direction. The drain overflow device 6 is used to drain the excess liquid in each quantitative hopper 1 through the overflow hose 4 and the overflow tank 2 into a recycler for recycling. The anti-overflow device 5 is arranged between the front support cavity 9 and the rear support cavity 10. After the excess liquid in each quantitative hopper 1 is drained, it is used to push up all the overflow hoses 4, so that the heights of the four liquid blocking edges 3 of each quantitative hopper 1 are the same, preventing the liquid in the quantitative hopper 1 from overflowing during subsequent movement. The liquid adding device 7 is located below the quantitative hopper 1 and is used to add the liquid in the quantitative hopper 1 into the test tubes in the test tube box.

[0006] Based on the above technical solution, further, the number of liquid adding holes of the porous quantitative rapid liquid adding device is an integer multiple of 4.

[0007] Based on the above technical solution, further, the liquid adding device 7 includes a sealing plate 7-1, a sealing socket 7-2, a liquid adding hole 7-3, a liquid adding siphon tube 7-4, an elastic soft rubber 7-5, a sealing return spring 7-6, a liquid adding soft steel wire rope 7-7, a liquid adding driving shaft 7-8, a liquid adding knob switch 7-9 and a fixed pulley 7-10.

[0008] Based on the above technical solution, further, the sealing plate 7-1 is horizontally located at the bottom of the metering hopper 1. Elastic soft rubber 7-5 is provided at both ends of the lower surface of the sealing plate 7-1, so that the liquid discharge hole at the bottom of the metering hopper 1 is in close contact with the sealing socket 7-2 provided on the upper surface of the sealing plate 7-1, ensuring that the liquid in the metering hopper 1 does not flow out; a through liquid addition hole 7-3 is provided in the vertical direction of the sealing plate 7-1, and a liquid addition siphon tube 7-4 is connected to the lower end of the liquid addition hole 7-3; the liquid discharge hole at the bottom of the metering hopper 1 and the liquid addition hole 7-3 are arranged in a horizontal dislocation, and the liquid addition hole 7-3 is close to the front end support cavity 9, preventing the liquid in the metering hopper 1 from flowing out through the liquid addition hole 7-3 during the liquid filling process; one end of the sealing plate 7-1 close to the front end support cavity 9 is connected to a sealing return spring 7-6, and the other end of the sealing return spring 7-6 is fixed on the front end support cavity 9, while the other end of the sealing plate 7-1 is connected to a liquid addition flexible steel wire rope 7-7. The liquid addition flexible steel wire rope 7-7 changes its direction through a fixed pulley 7-10 in the rear end support cavity 10 and then is wound around a liquid addition drive shaft 7-8. The liquid addition drive shaft 7-8 is fixed on the rear end support cavity 10 through a bearing. One end of the liquid addition drive shaft 7-8 passes through the bearing and extends outside the rear end support cavity 10, and is fixedly connected to a liquid addition knob switch 7-9.

[0009] Based on the above technical solution, further, the lower end opening of the liquid addition siphon tube 7-4 is larger than the diameter of the upper straight pipe and is in an inverted horn shape.

[0010] Based on the above technical solution, further, the anti-overflow device 5 is arranged below the overflow hose 4 and includes a guide slideway 5-1, an anti-overflow cross beam 5-2, an anti-overflow top plate 5-3, an anti-overflow flexible steel wire rope 5-4, a counterweight 5-5, an anti-overflow pull column 5-6, an anti-overflow trigger 5-7, a limit block 5-8 and a guide fixed pulley 5-9.

[0011] Based on the above technical solution, further, the guide slideways 5-1 are respectively vertically fixed on the front end support cavity 9 and the rear end support cavity 10 and are symmetrically arranged. The anti-overflow cross beam 5-2 is horizontally arranged between the guide slideways 5-1 to limit the lateral movement of the anti-overflow cross beam 5-2. An anti-overflow top plate 5-3 is provided on the upper surface of the anti-overflow cross beam 5-2, and the anti-overflow top plate 5-3 is located directly below the overflow hose 4. The anti-overflow flexible steel wire ropes 5-4 are respectively connected to the upper surface sides at both ends of the anti-overflow cross beam 5-2. The anti-overflow flexible steel wire ropes 5-4 are wound around the guide fixed pulley 5-9 directly above in the vertical direction. After changing directions through multiple fixed pulleys, they are connected to the anti-overflow pull column 5-6. The lower end of the anti-overflow pull column 5-6 is fixed on the anti-overflow trigger 5-7. The anti-overflow trigger 5-7 is arranged in a horizontal groove in the hand-held handle 8; counterweights 5-5 are provided below both ends of the anti-overflow cross beam 5-2 for resetting the anti-overflow cross beam 5-2.

[0012] Based on the above technical solution, further, limit blocks 5-8 are provided at the upper and lower ends of the anti-overflow trigger 5-7 for limiting the movement range of the anti-overflow trigger 5-7 in the horizontal groove within the hand-held handle 8.

[0013] Based on the above technical solution, further, the overflow discharge device 6 mainly consists of an overflow discharge interface 6-1 communicating with the overflow tank 2, an overflow discharge hose 6-2 communicating with the bottom of the overflow discharge interface 6-1, a spring hose clamp 6-3 acting on the outside of the overflow discharge hose 6-2, an overflow discharge soft wire rope 6-4 acting on the spring hose clamp 6-3, and a sliding push block 6-5 connected to the overflow discharge soft wire rope 6-4.

[0014] Based on the above technical solution, further, the sliding push block 6-5 is arranged in the horizontal notch above the hand-held handle 8.

[0015] The present invention also provides a usage method for the above-mentioned porous quantitative rapid liquid adding device, including the following steps:

[0016] (1) Place the porous quantitative rapid liquid adding device on a horizontal operating table, pour the liquid to be added into the quantitative hopper 1 until the liquid in the overflow tank 2 is higher than the overflow hose 4, then stop adding liquid to ensure that each quantitative hopper 1 is filled with liquid greater than the rated liquid adding amount;

[0017] (2) Hold the hand-held handle 8 with the hand, push the sliding push block 6-5 with the thumb to force the spring hose clamp 6-3 on the overflow discharge hose 6-2 to open, so that the liquid in the overflow tank 2 flows into the recycler, then release the sliding push block 6-5 with the thumb, and the spring hose clamp 6-3 clamps the overflow discharge hose 6-2 again to complete discharging the overflow liquid. At this time, each quantitative hopper 1 contains the rated amount of liquid to be added;

[0018] (3) Pull the anti-overflow trigger 5-7 with the index finger to force all the overflow hoses 4 to be pushed upward, so that the heights of the four liquid-blocking edges 3 of each quantitative hopper 1 are the same, preventing liquid mixing and overflow when moving the porous quantitative rapid liquid adding device in the next step;

[0019] (4) Align the liquid adding siphon tube 7-4 of the porous quantitative rapid liquid adding device with the test tube containing the liquid to be added in the test tube box, rotate the liquid adding knob switch 7-9 to make all the liquid in the quantitative hopper 1 be added into the corresponding test tube to be added, release the liquid adding knob switch 7-9, place the porous quantitative rapid liquid adding device back on the horizontal operating table, and under the gravity of the counterweight block 5-8 and the elastic action of the overflow hose 4, reset the anti-overflow device 5 and its overflow hose 4 to complete one liquid adding.

[0020] The beneficial effects of the present invention compared with the prior art are as follows:

[0021] 1. The porous quantitative rapid liquid adding device of the present invention can move flexibly, is convenient to operate, has accurate quantification, and can add liquid quickly and efficiently. The porous quantitative rapid liquid adding device of the present invention can accurately and quickly add liquid to multiple test tubes simultaneously without any power (such as electricity, gas, etc.) and detection means, and is not affected by the hand strength or proficiency of the operator.

[0022] 2. The present invention adopts the principle of connected overflow. First, by adding more liquid, the liquid in the overflow tank is made higher than the overflow hose to ensure that each metering hopper is filled with liquid greater than the rated amount. Then, through the overflow discharging device (the way of overflow recovery), it is ensured that each metering hopper is filled with the rated amount of liquid, realizing true accurate liquid addition, and the accuracy is far greater than that of the manual dropping method.

[0023] 3. The present invention realizes quickly adding all the liquid in the metering hopper into the corresponding test tube to be added with liquid through the liquid adding device. The last element that the liquid to be added passes through each metering hopper is the liquid adding siphon tube, which is characterized in that the diameter of the lower opening is larger than that of the upper straight tube, presenting an inverted trumpet shape. When starting to add liquid, there is a lot of liquid in the metering hopper. Under the action of gravity, the lower liquid can easily overcome the surface tension of the liquid and leave easily. Finally, the liquid (such as the culture medium) is more difficult to overcome the surface tension of the liquid, and the phenomenon of retained liquid is likely to occur. The present invention ensures that all the liquid in the metering hopper enters the corresponding test tube to be added with liquid through the siphon principle, and easily overcomes the phenomenon of retained liquid. Brief Description of the Drawings

[0024] In order to more clearly illustrate the embodiments of the present invention, the drawings related to the embodiments will be briefly introduced below.

[0025] Figure 1 It is a schematic top view (a) and side view (b) of the overall structure of the porous quantitative rapid liquid adding device of the present invention. Among them, 1: metering hopper, 2: overflow tank, 3: liquid retaining edge, 4: overflow hose, 5: anti-overflow device, 6: overflow discharging device, 7: liquid adding device, 8: hand-held handle, 9: front support cavity, 10: rear support cavity, 11: transition support cavity;

[0026] Figure 2 It is a schematic side view of the structure of the anti-overflow device. Among them, 5-1: guiding slideway, 5-2: anti-overflow cross beam, 5-3: anti-overflow top plate, 5-4: anti-overflow soft steel wire rope, 5-5: counterweight block, 5-6: anti-overflow pull column, 5-7: anti-overflow trigger, 5-8: limiting block, 5-9: guiding fixed pulley;

[0027] Figure 3 It is a schematic top view (a) and side view (b) of the structure of the overflow discharging device. Among them, 6-1: overflow discharging interface, 6-2: overflow discharging hose, 6-3: spring pipe clamp, 6-4: overflow discharging soft steel wire rope, 6-5: sliding push block;

[0028] Figure 4 Schematic top view (a) and side view (b) of the structure of the liquid adding device, where 7-1: sealing plate, 7-2: sealing socket, 7-3: liquid adding hole, 7-4: liquid adding siphon, 7-5: elastic soft rubber, 7-6: sealing return spring, 7-7: liquid adding flexible steel wire rope, 7-8: liquid adding driving shaft, 7-9: liquid adding knob switch, 7-10: fixed pulley. Specific implementation mode

[0029] The present invention will be described in detail below in conjunction with embodiments, but the implementation modes of the present invention are not limited thereto. Obviously, the embodiments described below are only partial embodiments of the present invention. For those skilled in the art, without creative labor, obtaining other similar embodiments will fall within the protection scope of the present invention.

[0030] Embodiment 1

[0031] The structure of the porous quantitative and rapid liquid adding device of the present invention is as Figure 1 shown, mainly including a quantitative hopper 1, an overflow tank 2, a liquid retaining edge 3, an overflow hose 4, an anti-overflow device 5, a drain overflow device 6, a liquid adding device 7, a hand-held handle 8, a front support cavity 9, a rear support cavity 10 and a transition support cavity 11; the front support cavity 9 is connected to the rear support cavity 10 through the overflow tanks 2 on both sides to form a structural framework of the porous quantitative and rapid liquid adding device. Eight quantitative hoppers 1 (two rows, 4 quantitative hoppers in each row) are respectively fixed inside the structural framework through the liquid retaining edges 3 at their tops, and the liquid retaining edges 3 between adjacent quantitative hoppers 1 are connected to each other. An overflow hose 4 penetrating the liquid retaining edge 3 is provided at the middle of the liquid retaining edge 3 connecting the quantitative hopper 1 and the overflow tank 2 and the opposite liquid retaining edge 3, so that the excess liquid in the quantitative hopper 1 flows through the overflow hose 4 over the liquid retaining edge 3 and overflows into the overflow tank 2. When the liquid in the overflow tank 2 is higher than the overflow hose 4, each quantitative hopper 1 will be filled with liquid. At this time, through the drain overflow device 6, the excess liquid in each quantitative hopper 1 is discharged through the overflow hose 4 and the overflow tank 2 to the recycler for recycling. At this time, as long as the operation table is kept flat, it can be ensured that each quantitative hopper 1 contains the rated liquid. The anti-overflow device 5 provided between the front support cavity 9 and the rear support cavity 10 jacks up all the overflow hoses 4, so that the heights of the four liquid retaining edges 3 of each quantitative hopper 1 are the same, and the liquid in the quantitative hopper 1 can be effectively prevented from overflowing during movement; the other end of the rear support cavity 10 is connected to the transition support cavity 11, and the other end of the transition support cavity 11 is connected to the upper end of the hand-held handle 8 in the vertical direction. In this way, the porous quantitative and rapid liquid adding device can be moved by holding the hand-held handle 8 with one hand. When the quantitative and rapid liquid adding device is moved to the test tube box to be filled with liquid, the liquid adding device 7 is used to complete the alignment with the test tube to be filled with liquid and complete the liquid adding.

[0032] The structure of the liquid adding device 7 is as follows Figure 4 shown, including a sealing plate 7-1, a sealing socket 7-2, a liquid adding hole 7-3, a liquid adding siphon tube 7-4, an elastic soft rubber 7-5, a sealing return spring 7-6, a liquid adding flexible steel wire rope 7-7, a liquid adding drive shaft 7-8, a liquid adding knob switch 7-9, and a fixed pulley 7-10; the sealing plate 7-1 is horizontally located at the bottom of the metering hopper 1, and elastic soft rubbers 7-5 are arranged at both ends of the lower surface of the sealing plate 7-1, so that the liquid discharge hole at the bottom of the metering hopper 1 is in close contact with the sealing socket 7-2 arranged on the upper surface of the sealing plate 7-1, ensuring that the liquid in the metering hopper 1 does not flow out; a through liquid adding hole 7-3 is arranged vertically on the sealing plate 7-1, and a liquid adding siphon tube 7-4 (the other end of the liquid adding siphon tube 7-4 is used to align with the test tube to be filled with liquid) is connected to the lower end of the liquid adding hole 7-3, and the lower end opening of the liquid adding siphon tube 7-4 is larger than the diameter of the upper straight tube and is in an inverted horn shape; the liquid discharge hole at the bottom of the metering hopper 1 and the liquid adding hole 7-3 are arranged in a horizontal dislocation (the liquid discharge hole at the bottom of the metering hopper 1 and the liquid adding hole 7-3 correspond one by one), and the liquid adding hole 7-3 is close to the front support cavity 9 to prevent the liquid in the metering hopper 1 from flowing out through the liquid adding hole 7-3 during the liquid filling process; one end of the sealing plate 7-1 close to the front support cavity 9 is connected to the sealing return spring 7-6, the other end of the sealing return spring 7-6 is fixed on the front support cavity 9, and the other end of the sealing plate 7-1 is connected to the liquid adding flexible steel wire rope 7-7. The liquid adding flexible steel wire rope 7-7 changes its direction through the fixed pulley 7-10 in the rear support cavity 10 and is wound around the liquid adding drive shaft 7-8. The liquid adding drive shaft 7-8 is fixed on the rear support cavity 10 through a bearing, and one end of the liquid adding drive shaft 7-8 passes through the bearing and extends outside the rear support cavity 10 and is fixedly connected to the liquid adding knob switch 7-9.

[0033] The working process of the liquid adding device 7 is as follows: When there is no external force acting on the liquid knob switch 7-9, the sealing return spring 7-6 pulls the sealing plate 7-1, so that the liquid discharge hole at the bottom of the metering hopper 1 is located within the sealing socket 7-2 and away from the liquid adding hole 7-3. At the same time, under the elastic force of the elastic soft rubber 7-5, the sealing socket 7-2 on the sealing plate 7-1 is pressed tightly against the bottom of the metering hopper 1, thus achieving a sealing effect. Move the porous metering and rapid liquid adding device to the test tube box to be liquid added. After inserting the liquid adding siphon tube 7-4 into the test tube to be liquid added, rotate the liquid adding knob switch 7-9 with the left hand, driving the liquid adding drive shaft 7-8 to rotate, so that the liquid adding soft steel wire rope 7-7 winds around the liquid adding drive shaft 7-8. The liquid adding soft steel wire rope 7-7 horizontally pulls the sealing plate 7-1 to move backward to the rear support cavity 10. The movement of the sealing plate 7-1 tightens the sealing return spring 7-6. As the liquid adding knob switch 7-9 rotates, the liquid adding hole 7-3 gradually approaches the liquid discharge hole at the bottom of the metering hopper 1. When the liquid adding hole 7-3 gradually coincides with the liquid discharge hole at the bottom of the metering hopper 1, the liquid in the metering hopper 1 flows into the test tube to be liquid added through the liquid adding siphon tube 7-4. Since the lower end opening of the liquid adding siphon tube 7-4 is larger than the diameter of the upper straight tube and is in an inverted horn shape, under the action of gravity and siphonage, all the liquid in the metering hopper 1 is added to the test tube. At this time, release the left hand. Under the pulling force of the sealing return spring 7-6, the sealing plate 7-1 returns to the initial position, and at this time, one liquid adding is completed, and the next liquid adding cycle can be repeated.

[0034] The anti-overflow device 5 is as Figure 2As shown in the figure, the anti-overflow device 5 is arranged below the overflow hose 4. The anti-overflow device 5 includes a guiding slideway 5-1, an anti-overflow cross beam 5-2, an anti-overflow top plate 5-3, an anti-overflow flexible steel wire rope 5-4, a counterweight 5-5, an anti-overflow pull column 5-6, an anti-overflow trigger 5-7, a limit block 5-8 and a guiding fixed pulley 5-9; Two guiding slideways 5-1 are respectively vertically fixed on the front-end support cavity 9 and the rear-end support cavity 10, and are symmetrically arranged. The anti-overflow cross beam 5-2 is horizontally arranged between the guiding slideways 5-1 to limit the lateral movement of the anti-overflow cross beam 5-2. The upper surface of the anti-overflow cross beam 5-2 is provided with an anti-overflow top plate 5-3, and the anti-overflow top plate 5-3 is located directly below the overflow hose 4. On the upper surface sides at both ends of the anti-overflow cross beam 5-2, they are respectively connected to the anti-overflow flexible steel wire rope 5-4. The anti-overflow flexible steel wire rope 5-4 is wound around the guiding fixed pulley 5-9 directly above. After passing through multiple fixed pulleys and changing directions, it is connected to the anti-overflow pull column 5-6. The lower end of the anti-overflow pull column 5-6 is fixed on the anti-overflow trigger 5-7. The upper end of the anti-overflow pull column 5-6 does not extend into the cavity of the transition support cavity 11 (there is a groove for the movement of the anti-overflow pull column 5-6 in the lower part of the transition support cavity 11), but extends into the above groove and is connected to the anti-overflow flexible steel wire rope 5-4 passing through the transition support cavity 11; The anti-overflow trigger 5-7 is arranged in the horizontal groove in the hand-held handle 8. The upper and lower ends of the anti-overflow trigger 5-7 are provided with limit blocks 5-8 for limiting the movement range of the anti-overflow trigger 5-7 in the horizontal groove in the hand-held handle 8.

[0035] Counterweights 5-5 are arranged below both ends of the anti-overflow cross beam 5-2 for resetting the anti-overflow cross beam 5-2.

[0036] When it is necessary to start the anti-overflow device 5, the index finger of the hand holding the hand-held handle 8 acts on the anti-overflow trigger 5-7, forcing the anti-overflow trigger 5-7 to move towards the groove in the hand-held handle 8 with the upper and lower limit blocks 5-8 connected to it. Thus, through the anti-overflow pull column 5-6, the anti-overflow flexible steel wire rope 5-4 and the guiding fixed pulley 5-9, it acts on the anti-overflow cross beam 5-2, forcing the three groups of anti-overflow cross beams 5-2 to drive the anti-overflow top plate 5-3 to lift upwards, causing all the overflow hoses 4 to be lifted upwards, making the heights of the four liquid retaining edges 3 of each metering hopper 1 uniform, so as to effectively prevent the liquid in the metering hopper 1 from overflowing during movement; When the liquid addition or the transfer of the porous metering rapid liquid addition device is completed, release the anti-overflow trigger 5-7. Under the gravity of the counterweights 5-5 fixed below both ends of the anti-overflow cross beam 5-2, the anti-overflow cross beam 5-2 drives the anti-overflow top plate 5-3 and the anti-overflow flexible steel wire rope 5-4 to move downwards, driving the anti-overflow pull column 5-6 and the anti-overflow trigger 5-7 to move away from the hand-held handle 8. When the limit block 5-8 connected to the anti-overflow trigger 5-7 abuts against the side sealing groove, it stops. During this process, the elasticity of the overflow hose 4 causes the overflow hose 4 to reset, that is, to maintain the same height as the top of the metering hopper 1, preparing for the next cycle of liquid addition.

[0037] As Figure 3 shown, the overflow discharging device 6 mainly consists of an overflow discharging interface 6-1 communicating with the overflow tank 2, an overflow discharging hose 6-2 communicating with the bottom of the overflow discharging interface 6-1, a spring clip 6-3 acting on the outside of the overflow discharging hose 6-2, an overflow discharging soft steel wire rope 6-4 acting on the spring clip 6-3, and a sliding push block 6-5 (arranged in a horizontal notch above the hand-held handle 8) connected to the overflow discharging soft steel wire rope 6-4 (after being changed direction by a fixed pulley).

[0038] Its working process is as follows: When each metering hopper 1 and the overflow tank 2 are filled with liquid, it means that each metering hopper 1 contains liquid greater than the rated value. At this time, the thumb of the hand holding the hand-held handle 8 can push the sliding push block 6-5 (the sliding push block has a fixed notch above the hand-held handle 8), driving the overflow discharging soft steel wire rope 6-4 to move. Through multiple groups of fixed pulleys, the pulling force of the overflow discharging soft steel wire rope 6-4 acts on the spring clip 6-3 (non-fixed side), so as to restore the overflow discharging hose 6-2, enabling the liquid in the overflow tank 2 to flow into the recovery device, thereby achieving the purpose of discharging liquid. After the liquid discharging is completed, the thumb releases the pushing of the sliding push block 6-5. Under the action of the spring of the spring clip 6-3, the spring clip 6-3 clamps the overflow discharging hose 6-2 again, preparing for the next liquid adding cycle.

[0039] Embodiment 2

[0040] The using method of the porous metering and rapid liquid adding device of the present invention includes the following steps:

[0041] 1) Place the porous metering and rapid liquid adding device on a horizontal operating table, pour the liquid to be added into any metering hopper 1 until the liquid in the overflow tank 2 is higher than the overflow hose 4, and then stop adding liquid. At this time, it can be ensured that each metering hopper 1 is filled with liquid greater than the rated liquid adding amount;

[0042] 2) Hold the hand-held handle 8 with the hand, and use the thumb of the hand holding the hand-held handle 8 (usually the right hand) to push the sliding push block 6-5 to force the spring clip 6-3 on the overflow discharging hose 6-2 to open, so that the liquid in the overflow tank 2 flows into the recovery device. Then, the thumb releases the pushing of the sliding push block 6-5, and the spring clip 6-3 clamps the overflow discharging hose 6-2 again, completing the discharging of the overflow liquid. At this time, each metering hopper 1 contains the liquid to be added with the rated amount;

[0043] 3) Use the index finger of the hand holding the hand-held handle (usually the right hand) to pull the anti-overflow trigger 5-7 to force all the overflow hoses 4 to lift upwards, so that the heights of the four liquid retaining edges 3 of each metering hopper 1 are the same, preventing liquid mixing and overflow when moving the porous metering and rapid liquid adding device in the next step;

[0044] 4) After aligning the liquid adding siphon tube 7-4 of the porous quantitative rapid liquid adding device with the test tube to be added with liquid in the test tube box, rotate the liquid adding knob switch 7-9 with the left hand to add all the liquid in the quantitative hopper 1 into the corresponding test tube to be added with liquid. Then, release the liquid adding knob switch 7-9 with the left hand, place the porous quantitative rapid liquid adding device back on the horizontal operation table, and release the hand (usually the right hand) and index finger holding the handle. Under the gravity of the counterweight 5-8 and the elastic action of the overflow hose 4, the anti-overflow device 5 and its overflow hose 4 are reset. At this time, one liquid adding is completed, and the above steps can be repeated for the next liquid adding.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A porous quantitative rapid liquid adding device, characterized in that, it includes a quantitative hopper, an overflow tank, a liquid retaining edge, an overflow hose, an anti-overflow device, a drain overflow device, a liquid adding device, a hand-held handle, a front support cavity, a rear support cavity and a transition support cavity; The front support cavity and the rear support cavity are connected through the overflow tanks on both sides, surrounding the structural framework of the porous quantitative rapid liquid adding device. More than two rows of quantitative hoppers are fixed inside the structural framework through the liquid retaining edges at their tops. The liquid retaining edges between adjacent quantitative hoppers are connected to each other. The liquid retaining edges connecting the quantitative hopper and the overflow tank and the middle of the liquid retaining edges connecting adjacent rows of quantitative hoppers are provided with overflow hoses penetrating the liquid retaining edges, so that the excess liquid in the quantitative hopper flows through the liquid retaining edge through the overflow hose and overflows into the overflow tank. The other end of the rear support cavity is connected to the transition support cavity, and the other end of the transition support cavity is connected to the upper end of the hand-held handle in the vertical direction; the drain overflow device is used to drain the excess liquid in each quantitative hopper into the recycler through the overflow hose and the overflow tank for recycling; the anti-overflow device is arranged between the front support cavity and the rear support cavity. After the excess liquid in each quantitative hopper is drained, it is used to push up all the overflow hoses, so that the heights of the four liquid retaining edges of each quantitative hopper are the same, preventing the liquid in the quantitative hopper from overflowing during subsequent movement; The liquid adding device is located below the quantitative hopper and is used to add the liquid in the quantitative hopper into the test tubes in the test tube box; The described liquid adding device includes a sealing plate, a sealing socket, a liquid adding hole, a liquid adding siphon tube, an elastic soft rubber, a sealing return spring, a liquid adding soft steel wire rope, a liquid adding driving shaft, a liquid adding knob switch and a fixed pulley; The sealing plate is horizontally located at the bottom of the quantitative hopper. Elastic soft rubbers are arranged at both ends of the lower surface of the sealing plate, so that the liquid discharge hole at the bottom of the quantitative hopper is in close contact with the sealing socket arranged on the upper surface of the sealing plate; a penetrating liquid adding hole is arranged vertically on the sealing plate, and a liquid adding siphon tube is connected to the lower end of the liquid adding hole; the liquid discharge hole at the bottom of the quantitative hopper and the liquid adding hole are arranged out of alignment in the horizontal direction, and the liquid adding hole is close to the front support cavity; One end of the sealing plate close to the front support cavity is connected to the sealing return spring, and the other end of the sealing return spring is fixed on the front support cavity. The other end of the sealing plate is connected to the liquid adding soft steel wire rope. The liquid adding soft steel wire rope changes direction through the fixed pulley in the rear support cavity and then winds around the liquid adding driving shaft. The liquid adding driving shaft is fixed on the rear support cavity through a bearing. One end of the liquid adding driving shaft passes through the bearing and extends outside the rear support cavity and is fixedly connected to the liquid adding knob switch; The described anti-overflow device is arranged below the overflow hose and includes a guiding slideway, an anti-overflow cross beam, an anti-overflow top plate, an anti-overflow soft steel wire rope, a counterweight, an anti-overflow pull column, an anti-overflow trigger, a limiting block and a guiding fixed pulley; The guiding slideways are respectively vertically fixed on the front support cavity and the rear support cavity and are symmetrically arranged. The anti-overflow cross beam is horizontally arranged between the guiding slideways. The upper surface of the anti-overflow cross beam is provided with an anti-overflow top plate, and the anti-overflow top plate is located directly below the overflow hose. The upper surface sides at both ends of the anti-overflow cross beam are respectively connected to the anti-overflow soft steel wire rope.

2. The porous quantitative rapid liquid adding device according to claim 1, characterized in that, The number of liquid adding holes of the porous quantitative and rapid liquid adding device is an integer multiple of 4.

3. The porous quantitative and rapid liquid adding device according to claim 2, wherein, the lower end opening of the liquid adding siphon is larger than the diameter of the upper straight pipe, presenting an inverted trumpet shape.

4. The porous quantitative and rapid liquid adding device according to claim 3, wherein, the anti-overflow soft steel wire rope is wound around the guiding fixed pulley vertically above, and after being redirected by multiple fixed pulleys, it is connected to the anti-overflow pull column. The lower end of the anti-overflow pull column is fixed on the anti-overflow trigger, and the anti-overflow trigger is arranged in the horizontal groove inside the hand-held handle; counterweights are arranged below both ends of the anti-overflow cross beam.

5. The porous quantitative and rapid liquid adding device according to claim 4, wherein, limit blocks are arranged at the upper and lower ends of the anti-overflow trigger for limiting the moving range of the anti-overflow trigger in the horizontal groove inside the hand-held handle.

6. The porous quantitative and rapid liquid adding device according to claim 5, wherein, the overflow discharging device is composed of an overflow discharging interface communicated with the overflow tank, an overflow discharging hose communicated with the bottom of the overflow discharging interface, a spring pipe clamp acting on the outside of the overflow discharging hose, an anti-overflow soft steel wire rope acting on the spring pipe clamp, and a sliding push block connected to the anti-overflow soft steel wire rope.

7. The using method of the porous quantitative and rapid liquid adding device according to claim 6, wherein, it includes the following steps: (1) Place the porous quantitative and rapid liquid adding device on a horizontal operating table, pour the liquid to be added into the quantitative hopper until the liquid in the overflow tank is higher than the overflow hose and then stop adding liquid, ensuring that each quantitative hopper is filled with liquid greater than the rated liquid adding amount; (2) Hold the hand-held handle with the hand, and use the thumb to push the sliding push block to force the spring pipe clamp on the overflow discharging hose to open, so that the liquid in the overflow tank flows into the recycler, then release the thumb from the sliding push block, and the spring pipe clamp clamps the overflow discharging hose again to complete discharging the overflow liquid. At this time, each quantitative hopper contains the rated amount of liquid to be added; (3) Use the index finger to pull the anti-overflow trigger to force all the overflow hoses to be lifted upward, so that the four liquid retaining edges of each quantitative hopper are at the same height, preventing liquid leakage and overflow when moving the porous quantitative and rapid liquid adding device in the next step; (4) Align the liquid adding siphon of the porous quantitative and rapid liquid adding device with the test tube to be added with liquid in the test tube box, rotate the liquid adding knob switch to make all the liquid in the quantitative hopper be added into the corresponding test tube to be added with liquid, release the liquid adding knob switch, place the porous quantitative and rapid liquid adding device back on the horizontal operating table, and under the action of the gravity of the counterweight and the elasticity of the overflow hose, reset the anti-overflow device and its overflow hose to complete one liquid adding.

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