CN-224229761-U - Double-valve combined device for high-precision liquid discharging control

Abstract

A double-valve combined device for high-precision liquid discharging control belongs to the technical field of liquid discharging control. The utility model is characterized in that an A valve and a B valve are fixedly connected on a feed pipeline in sequence, wherein any one of the two valves is a regulating valve, and the other valve is a cut-off valve. When the valve is repeatedly used, the opening of the regulating valve is kept fixed, and only the cut-off valve needs to be opened and closed. When the liquid parameters at the supply side and the environment in the reaction kettle are unchanged, the high-precision control of the flow speed or the flow of the liquid flowing through the device is realized, the valve adjusting time and the observation time for operators to observe the opening of the valve are greatly saved, and the service efficiency of the device is improved. Meanwhile, the opening of the regulating valve is fixed, which means that the consistency of the flow rate of the liquid flowing through the device is high, the accuracy and the stability of discharging are greatly improved, the operation difference caused by human factors is reduced, and the production process has good reproducibility. The utility model has the characteristics of simple structure, strong usability and wide application range.

Inventors

• YU HAIZHONG
• HE PING
• HU JIANZHAO
• ZHAO QIAN
• YI QINGYAN

Assignees

• 吉林省长源药业有限公司

Dates

Publication Date

20260512

Application Date

20250619

Claims (4)

1. 1. A double-valve combined device for high-precision liquid discharging control comprises a reaction kettle (1), wherein the reaction kettle (1) is fixedly connected with a feed pipeline (2), and is characterized in that an A valve (3) and a B valve (4) are sequentially and fixedly connected to the feed pipeline (2), one of the A valve (3) and the B valve (4) is a regulating valve, and the other valve is a cut-off valve.
2. 2. The double-valve assembly for high-precision liquid discharge control of claim 1, wherein the shut-off valve is a gate valve.
3. 3. The double-valve assembly for high-precision liquid discharge control of claim 1, wherein the shut-off valve is a shut-off valve.
4. 4. The double-valve assembly for high-precision liquid discharge control of claim 1, wherein the shut-off valve is a ball valve.

Description

Double-valve combined device for high-precision liquid discharging control Technical Field The utility model belongs to the technical field of liquid discharging control, and particularly relates to a double-valve combined device for high-precision liquid discharging control. Background In the production process of a production enterprise, in order to ensure the product quality and the process stability, improve the production efficiency and control the cost, the speed or the flow of the liquid discharging is often required to be accurately controlled, because the adding speed and the flow of the liquid material have a critical influence on the quality of the product. Taking the production of pharmaceutical enterprises as an example, in the production links of certain medicines, the weighed liquid auxiliary materials are required to be added into a reaction kettle at a constant speed within a specific time, for example, the constant-speed adding operation is required to be completed within 55-60 seconds, if the discharging speed is not in accordance with the requirements, if the discharging speed is too high or too low, incomplete or excessive medicine reaction can be caused, the yield and the content of the medicines are seriously affected, and finally the production benefit is reduced. The existing liquid discharging control method has various problems, for example, most enterprises use a single valve to control liquid discharging, even if the valve is provided with scale indication, due to errors in human eye observation, when an operator adjusts the valve each time, the actual opening degree often differs from the last time, and the higher the precision required for the flow rate or the discharging time is, the more remarkable the adverse effect caused by the difference is. Moreover, the operation is troublesome and the time consumption is long, and the operation habit and the judgment standard among different operators are different, so that the repeatability of the operation is poor, the flow speed and the flow of the discharged materials are difficult to keep consistent, and the high-precision production requirement cannot be met. Therefore, a new technical solution is needed in the prior art to solve this problem. Disclosure of utility model The utility model aims to solve the technical problem of providing a double-valve combined device for high-precision liquid discharging control, which is used for solving the technical problem that the flow speed and the flow rate of each discharging are difficult to be kept consistent due to frequent valve adjustment. A double-valve combined device for high-precision liquid discharging control comprises a reaction kettle, wherein the reaction kettle is fixedly connected with a feed pipeline, an A valve and a B valve are sequentially and fixedly connected onto the feed pipeline in sequence, any one of the A valve and the B valve is a regulating valve, and the other valve is a cut-off valve. The utility model discloses a double-valve combined device for high-precision liquid discharging control, and the cut-off valve is a gate valve. The utility model discloses a double-valve combined device for high-precision liquid discharging control, and the cut-off valve is a cut-off valve. The utility model discloses a double-valve combined device for high-precision liquid discharging control, and the cut-off valve is a ball valve. Through the design scheme, the utility model has the following beneficial effects: The opening of the regulating valve for regulating the flow is fixed, so that the regulating valve does not need to be repeatedly regulated when the regulating valve is used each time, and only the cut-off valve needs to be opened and closed, thereby greatly saving the valve regulating time and the observation time for operators to observe the opening of the valve and improving the service efficiency of the device. Meanwhile, the opening degree of the regulating valve does not need to be changed frequently, which means that the consistency of the flow velocity of liquid flowing through the device is high, the accuracy and the stability of discharging are greatly improved, and the adverse effect on the production process caused by unstable flow velocity is effectively avoided. In addition, because the opening degree of the regulating valve is fixed, even if an operator is replaced, the consistency of the discharging process can be ensured, the operation difference caused by human factors is greatly reduced, and the production process has good reproducibility. Finally, the utility model realizes the aim of accurately controlling the liquid flow by the ingenious matching of the valves, has simple structure, strong usability and wide application range, and is worth popularizing. Drawings The utility model is further described with reference to the drawings and detailed description which follow: FIG. 1 is a schematic diagram of a dual valve assembly for high precision l