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CN-117142421-B - Liquid metering and filling system

CN117142421BCN 117142421 BCN117142421 BCN 117142421BCN-117142421-B

Abstract

The embodiment of the application provides a liquid metering and filling system, which comprises a system platform, a stirring tank arranged at the top of the system platform, a metering device arranged at the middle of the system platform, a temporary storage device arranged at the bottom of the system platform, wherein the stirring tank comprises a first liquid outlet arranged at the bottom, the metering device comprises a second liquid inlet and a second liquid outlet which are respectively arranged at the top and the bottom, the second liquid inlet is connected with a first liquid outlet pipeline and is used for conveying liquid from the stirring tank to the metering device under the action of gravity of the liquid, the temporary storage device is arranged at the bottom of the system platform and comprises a third liquid inlet and a third liquid outlet which are respectively arranged at the top and the bottom, the third liquid inlet is connected with a second liquid outlet pipeline, the third liquid outlet is connected with a liquid container pipeline through a third valve, and the control center is used for controlling to realize automatic metering and filling of the liquid. The application optimizes the overall layout of the liquid metering and filling system, can reduce the use of energy sources and reduce the production cost.

Inventors

  • XIONG FAN
  • XIONG YING
  • CHEN XIAOJIAO

Assignees

  • 重庆长江造型材料（集团）股份有限公司

Dates

Publication Date
20260508
Application Date
20230830

Claims (10)

  1. 1. A liquid metering and filling system comprising a system platform, further comprising: The stirring tank is arranged at the top of the system platform and is used for stirring and mixing liquid, the stirring tank comprises a first liquid outlet arranged at the bottom, the stirring tank comprises a sealing cover and a tank body which is in sealing connection with the sealing cover, and the liquid is liquid resin; The metering device is arranged in the middle of the system platform and used for metering and weighing liquid, the metering device comprises a second liquid inlet and a second liquid outlet which are respectively arranged at the top and the bottom, the second liquid inlet is connected with the first liquid outlet pipeline through a first valve, liquid is conveyed into the metering device from the stirring tank under the action of gravity of the liquid, the metering device further comprises a flow control device and a metering tank which are communicated with each other, the metering tank comprises a sealing cover and a tank body which is in sealing connection with the sealing cover, the liquid inlet of the flow control device is connected with the first liquid outlet pipeline through the first valve, the second liquid outlet is arranged at the bottom of the metering tank, the flow control device comprises a first flow valve and a second flow valve, the first flow valve is connected with the first opening of the metering tank through a silica gel hose and on the same axis, and the second flow valve is connected with the second opening through the silica gel hose and on the same axis; The metering device also comprises a metering frame, the flow control device and the metering tank are arranged on the metering frame, the foundation on the metering frame is fixed on the system platform by bolts and buffer springs, the buffer springs are sleeved on the bolts and are positioned between the foundation and the base for buffering impact force when liquid is fed, and the metering device is characterized in that the flow control device and the metering tank are arranged on the metering frame, the foundation on the metering frame is fixed on the system platform by bolts and buffer springs, the buffer springs are sleeved on the bolts and are used for buffering impact force when liquid is fed in the foundation and the base The temporary storage device is arranged at the bottom of the system platform and used for temporarily storing the weighed liquid, the temporary storage device comprises a third liquid inlet and a third liquid outlet which are respectively arranged at the top and the bottom, the third liquid inlet is connected with the second liquid outlet pipeline through a second valve, the third liquid outlet is connected with the liquid container pipeline through a third valve and used for filling the liquid into a peripheral liquid container, and the temporary storage device comprises a temporary storage tank and a sealing cover arranged at the opening of the temporary storage tank; The control center is respectively and electrically connected with the first valve, the second valve and the third valve, and controls the opening and closing of the first valve, the second valve and the third valve so as to realize automatic metering and filling of liquid; wherein, the stirring tank, the metering device and the temporary storage device are also respectively provided with an air inlet, and protective gas with a preset pressure value is introduced through the air inlet so as to isolate liquid from air, and the preset pressure value is 0.01-0.04MPa.
  2. 2. The liquid metering and filling system as set forth in claim 1, further comprising a blowing valve disposed between the third liquid outlet and the liquid container, wherein a shielding gas is blown into the third liquid outlet through the blowing valve to increase a flow rate of the liquid.
  3. 3. The liquid metering and filling system according to claim 1, wherein one or more of the first valve, the second valve and the third valve is a pneumatic ball valve.
  4. 4. A liquid metering and filling system as claimed in claim 3, wherein the third valve has a diameter specification of DN50-DN80.
  5. 5. The liquid metering and filling system according to claim 1, wherein the tank wall of the tank body comprises an inner layer and an outer layer, the inner layer and the outer layer being spaced apart to form a hollow interlayer, the hollow interlayer being filled with a medium for regulating the temperature inside the tank body.
  6. 6. The liquid metering and filling system according to claim 5, wherein when the temperature of the day is lower than a first temperature threshold, the medium filled into the hollow interlayer is low-temperature resistant heat conducting oil, a heating layer is arranged on the outer wall of the outer layer, a heat preservation layer is arranged on the outer side of the heating layer, the heat of the heating layer is transferred into the inner layer by utilizing the low-temperature resistant heat conducting oil, and the first temperature threshold is between-5 ℃ and 5 ℃.
  7. 7. The liquid metering and filling system according to claim 5, wherein when the temperature of the day is higher than a second temperature threshold, the medium filled in the hollow interlayer is chilled water, an insulation layer, a water inlet and a water outlet are arranged on the outer wall of the outer layer, an external refrigerating device is respectively connected with the water inlet and the water outlet and is used for introducing chilled water into the hollow interlayer, the chilled water circulates in the insulation layer to reduce the temperature in the inner layer, and the second temperature threshold is 30-45 ℃.
  8. 8. The liquid metering and filling system according to claim 1, wherein the first flow valve is larger than the second flow valve; When the weight of the liquid in the metering tank reaches a first advance, the control center controls the first flow valve to be closed, and when the weight of the liquid in the metering tank reaches a second advance, the control center controls the second flow valve to be closed.
  9. 9. The liquid metering and filling system according to claim 8, wherein the first advance is less than the second advance, and wherein the first advance and the second advance are both less than or equal to a target filling amount.
  10. 10. The liquid dosing system of claim 1, wherein the shielding gas comprises nitrogen, argon, and helium.

Description

Liquid metering and filling system Technical Field The application relates to the technical field of liquid filling, in particular to a liquid metering and filling system. Background The liquid metering and filling system is a device for filling liquid into a target container or system, and has the main functions of controlling the flow rate, filling amount and filling speed of the liquid, so as to ensure that the filling process is accurately and efficiently completed. The liquid metering and filling system can be applied to the technical fields of chemical industry, pharmaceutical industry, scientific research and the like, and plays an important role in the production and experimental process. The liquid metering and filling system comprises a plurality of sub-devices, and the sub-devices are connected by pipelines and valves. However, the structure layout of various sub-devices is unreasonable, and the problems of high energy consumption, high filling cost and the like exist. In addition, the existing liquid metering and filling system is low in automation degree, and needs to be manually involved in the filling process, so that the filling cost is increased. The liquid metering and filling system is often used for filling chemical solution or liquid resin, and the chemical solution has the characteristics of easy volatilization, large peculiar smell and the like, and can generate serious harm after being inhaled by a human body. The liquid resin has the characteristics of high viscosity, high chemical activity, easy chemical reaction with air and the like. The liquid resin has different density and viscosity at different temperatures, and the problem of inaccurate liquid resin metering is easily caused when volume metering is utilized. In addition, the liquid resin contacts and reacts with moisture in the air, so that caking can be caused, and the product quality is seriously affected. The existing liquid metering and filling system cannot effectively solve the problems. Disclosure of Invention Aiming at the technical problems in the prior art, the application provides the liquid metering and filling system, which optimizes the overall layout of the liquid metering and filling system, can reduce the use of energy sources and reduce the production cost. The liquid metering and filling system comprises a system platform, a stirring tank and a temporary storage device, wherein the stirring tank is arranged at the top position of the system platform and is used for stirring mixed liquid, the stirring tank comprises a first liquid outlet arranged at the bottom, the metering device is arranged at the middle position of the system platform and is used for metering and weighing liquid, the metering device comprises a second liquid inlet and a second liquid outlet which are respectively arranged at the top and the bottom, the second liquid inlet is connected with a first liquid outlet pipeline through a first valve and is used for conveying liquid from the stirring tank to the metering device under the action of gravity of the liquid, the temporary storage device is arranged at the bottom position of the system platform and is used for temporarily storing the weighed liquid, the temporary storage device comprises a third liquid inlet and a third liquid outlet which are respectively arranged at the top and the bottom, the third liquid inlet is connected with a second liquid outlet pipeline through a third valve and is connected with a liquid container pipeline, the liquid is filled into the liquid container outside the liquid container through the third valve, and the liquid container is automatically filled into the liquid container through the third valve and the liquid container pipeline, and the liquid container is automatically controlled by the temporary storage device and the liquid container is automatically opened and closed through the third valve and the third valve. The liquid metering and filling system further comprises a blowing valve arranged between the third liquid outlet and the liquid container, and protective gas is blown into the third liquid outlet through the blowing valve to improve the flow rate of liquid. One or more of the first valve, the second valve and the third valve of the liquid metering and filling system as described above is a pneumatic ball valve. The liquid metering and filling system as described above, wherein the third valve has a diameter of DN50-DN80. The stirring tank comprises a tank body, wherein the tank wall of the tank body comprises an inner layer and an outer layer, the inner layer and the outer layer are arranged at intervals to form a hollow interlayer, and a filling medium in the hollow interlayer is used for adjusting the temperature inside the tank body. According to the liquid metering and filling system, when the temperature of the day is lower than the first temperature threshold, the medium filled into the hollow interlayer is low-temperature resistan