A metering feed tank

Abstract

The application provides a metering feed tank, and relates to the technical field of feed tank systems. The metering feed tank comprises a tank body, a separation assembly, a plurality of metering assemblies and a plurality of feed and discharge assemblies. The separation assembly is arranged in the tank body to separate the tank body into a plurality of independent metering cavities. The metering assemblies are respectively arranged in the metering cavities to meter the volume of materials in the metering cavities. The feed and discharge assemblies are respectively arranged on the metering cavities to feed and discharge a plurality of materials into and out of the corresponding metering cavities. The metering feed tank can reduce the cost of the metering tank and reduce the space occupation.

Description

Technical Field

[0001] This application relates to the field of feed tank system technology, and in particular to a metering feed tank. Background Technology

[0002] Fine chemical companies produce products that are widely used in daily life. Due to the characteristics of fine chemicals, such as small market demand, long operation time, multiple reaction steps, and various types of feedstocks, batch production methods often achieve higher yields.

[0003] In related technologies, it is usually necessary to equip each material with an independent storage tank. Each storage tank must be equipped with instruments such as flow meters, weighing sensors, and level transmitters, and pressure balance must be maintained through an independent gas phase conditioning system. In this way, accurate measurement can be achieved with the help of high-precision instruments and complex control logic.

[0004] However, existing stand-alone tank solutions increase the number of devices and complicate the configuration of instruments and valves, which significantly increases investment costs and space requirements. Summary of the Invention

[0005] This application provides a metering feed tank to reduce the cost of the metering tank and reduce its space occupation.

[0006] This application provides a metering feed tank, including:

[0007] Tank body;

[0008] A dividing assembly, disposed within the tank body, divides the tank body into multiple independent metering chambers.

[0009] Multiple metering components are respectively disposed in the metering chamber to measure the volume of the material in the metering chamber;

[0010] Multiple feeding and discharging components are respectively arranged on the metering chamber to allow various materials to enter and exit the corresponding metering chambers.

[0011] In one possible implementation, the metering assembly includes a coarse adjustment member and a fine adjustment member, both of which are disposed on the tank body and extend into the metering chamber; the coarse adjustment member is used to initially calibrate the volume of the metering chamber, and the fine adjustment member is used to recalibrate the volume of the metering chamber.

[0012] In one possible implementation, the coarse adjustment component includes a coarse adjustment block, a coarse adjustment rod, and a coarse adjustment disc. One end of the coarse adjustment rod passes through the metering cavity and is connected to the coarse adjustment block. The other end of the coarse adjustment rod is located outside the tank and is connected to the coarse adjustment disc. The coarse adjustment block is configured to be inserted into the metering cavity to calibrate the volume of the metering cavity.

[0013] In one possible implementation, the fine adjustment component includes a fine adjustment block, a fine adjustment rod, and a fine adjustment disc. One end of the fine adjustment rod passes through the metering cavity and is connected to the fine adjustment block. The other end of the fine adjustment rod is located outside the tank and is connected to the fine adjustment disc. The fine adjustment block is configured to be inserted into the metering cavity to calibrate the volume of the metering cavity.

[0014] In one possible implementation, the volume of the fine adjustment block is smaller than the volume of the coarse adjustment block.

[0015] In one possible implementation, the metering feed tank further includes a preheating assembly comprising a plurality of heat exchange tubes passing through the partition assembly and extending into the metering chamber to heat the material, the heat exchange tubes being evenly distributed at the bottom of the metering chamber.

[0016] In one possible implementation, the partition assembly includes a half partition and at least one full partition, the full partition being disposed within the tank to divide the tank into multiple metering chambers, the half partition being disposed at both ends of the tank and connected to the full partition, the half partition dividing the two ends of the tank into an upper chamber and a lower chamber.

[0017] In one possible implementation, the metering feed tank further includes a gas collection assembly, which includes a gas phase breather and a connecting pipe. The connecting pipe is connected to the gas phase breather and to an external gas source. The gas phase breather extends into each of the metering chambers and has multiple breath holes, which are correspondingly located within the metering chambers.

[0018] In one possible implementation, the breathing hole is located in the direction opposite to the liquid surface in the metering chamber of the gas phase breathing tube.

[0019] In one possible implementation, the two ends of the gas phase breathing tube extend into the upper chamber, and the tank is provided with a waste liquid discharge port that communicates with the upper chamber.

[0020] This application provides a metering feed tank, which is divided into multiple independent metering chambers by a partition component installed inside the tank. Each metering chamber is equipped with an independent metering component and an inlet / outlet component. The partition component divides the tank into multiple independent metering chambers, each equipped with a dedicated metering component, enabling precise metering of the material volume within the chamber, ensuring high accuracy and reliability of material metering. Simultaneously, multiple inlet / outlet components are respectively installed in each metering chamber, achieving efficient loading and unloading of various materials, effectively avoiding mutual interference and cross-contamination between materials, improving the flexibility and safety of the feeding operation, and reducing the number of equipment and investment costs compared to traditional multi-tank systems. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0022] Figure 1 This is a structural schematic diagram of the metering feed tank provided in this application;

[0023] Figure 2 This is a structural schematic diagram of the metering feed tank provided in this application from another angle.

[0024] Figure 3 for Figure 2 Schematic diagram of the medium-coarseness adjusting component;

[0025] Figure 4 for Figure 2 Schematic diagram of the structure of the fine adjustment component;

[0026] Figure 5 for Figure 1 Schematic diagram of the gas collection component;

[0027] Figure 6 for Figure 1 A schematic diagram of the structure of the central partition.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100. Tank body; 110. Metering chamber; 120. Upper chamber; 130. Lower chamber;

[0030] 200. Partition assembly; 210. Half partition; 220. Full partition;

[0031] 300. Metering component; 310. Coarse adjustment component; 311. Coarse adjustment block; 312. Coarse adjustment rod; 313. Coarse adjustment disc; 320. Fine adjustment component; 321. Fine adjustment block; 322. Fine adjustment rod; 323. Fine adjustment disc;

[0032] 400. Feeding / discharging assembly; 410. Feed pipe; 420. Discharge pipe; 430. Baffle; 440. Overflow pipe;

[0033] 500. Preheating assembly; 510. Heat exchange tube; 520. Heat exchange medium tube;

[0034] 600. Gas collection assembly; 610. Gas phase breathing tube; 611. Breathing hole; 620. Connecting pipe; 630. Waste liquid discharge port.

[0035] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0036] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0037] In fine chemical production, batch operation processes are widely used in small-batch, multi-step reaction processes. These processes typically involve the alternating feeding of multiple liquid feedstocks, each in small quantities (e.g., tens to hundreds of liters), but require extremely high metering accuracy (usually ±0.5%). For example, in pharmaceutical, dye synthesis, or high-end chemical production, different batches of reactions require precise control of the addition ratios of various solvents, catalysts, or intermediates to ensure product quality and reaction efficiency. However, in traditional processes, each feedstock usually requires a separate storage tank, metering device, and control loop, resulting in a large number of equipment, a large footprint, and high investment costs. Furthermore, chemical compatibility issues may exist between feedstocks (e.g., acid-base neutralization, redox reactions). Improper tank or pipeline design can easily lead to material cross-contamination, affecting production safety. Simultaneously, feedstocks need to be preheated or precooled to specific temperatures during the reaction process; traditional jacketed or coil heat exchange methods are inefficient and prolong operation time. At the operational level, multi-tank systems also require complex gas phase pressure regulation and condensate recovery designs to prevent the condensate from flowing back into the storage tank and causing contamination. Therefore, there is an urgent need for an integrated, high-precision, safe, reliable, and compact liquid metering and feeding system to meet the process requirements of intermittent operation in fine chemical industry.

[0038] This application provides a metering feed tank, which is divided into multiple independent metering chambers by a partition component installed inside the tank. Each metering chamber is equipped with an independent metering component and an inlet / outlet component. The partition component divides the tank into multiple independent metering chambers, each equipped with a dedicated metering component, enabling precise metering of the material volume within the chamber, ensuring high accuracy and reliability of material metering. Simultaneously, multiple inlet / outlet components are respectively installed in each metering chamber, achieving efficient loading and unloading of various materials, effectively avoiding mutual interference and cross-contamination between materials, improving the flexibility and safety of the feeding operation, and reducing the number of equipment and investment costs compared to traditional multi-tank systems.

[0039] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0040] This application provides a metering feed tank, referring to... Figure 1 and Figure 2 The metering feed tank includes a tank body 100, a partition assembly 200, multiple metering components 300, and multiple infeed and discharge components 400.

[0041] A separator 200 is disposed within the tank 100 to divide the tank 100 into multiple independent metering chambers 110. Metering components 300 are respectively disposed within each metering chamber 110 to measure the volume of material within the corresponding metering chamber 110. Feeding and discharging components 400 are respectively disposed on each metering chamber 110 to allow various materials to enter and exit the respective metering chambers 110.

[0042] The tank 100 is divided into multiple independent metering chambers 110 by the partition component 200. Each metering chamber 110 is equipped with a dedicated metering component 300, which can accurately measure the volume of material within the chamber 110, ensuring high accuracy and reliability of material metering. Simultaneously, multiple inlet and outlet components 400 are respectively installed in each metering chamber 110, enabling efficient inlet and outlet of various materials. This effectively avoids mutual interference and cross-contamination between materials, improves the flexibility and safety of the feeding operation, and reduces the number of equipment and investment costs compared to traditional multi-tank systems.

[0043] For example, the tank 100 can be horizontal or vertical, and the material can be metal or non-metal. In the example of this application, the tank 100 is a horizontal tank.

[0044] For example, the metering component 300 and the infeed / outfeed component 400 are configured in a one-to-one correspondence with the metering chamber 110, and each metering component 300 and each infeed / outfeed component 400 are independent of each other. This is to facilitate the storage of different materials in each metering chamber 110, while avoiding mutual interference and cross-contamination between the materials.

[0045] For example, the feeding / discharging assembly 400 includes a feed pipe 410 and a discharge pipe 420, with the feed pipe 410 disposed on the tank body 100 to communicate with the metering chamber 110. A shut-off valve is provided on the feed pipe 410 for opening and closing the feed pipe 410. The shut-off valve can be a ball valve, gate valve, or butterfly valve. In the example of this application, each metering chamber 110 is connected to a feed pipe 410.

[0046] For example, a baffle 430 is also provided inside the tank body 100, and the baffle 430 is located at the outlet of the feed pipe 410. An inner extension pipe is provided on the feed pipe 410, which is located inside the tank body 100 and extends the length of the feed pipe 410 so that the end of the inner extension pipe contacts the wall of the tank body 100.

[0047] When liquid material flows in, it flows along the 100-meter wall of the tank through the inner extension pipe. This wall-following flow design effectively reduces liquid surface fluctuations and significantly improves metering accuracy. At the same time, the baffle 430 further stabilizes the liquid flow, ensuring the smoothness of the material inflow process and providing a strong guarantee for accurate metering.

[0048] For example, the discharge pipe 420 is located at the bottom of the tank 100 and is connected to the metering chamber 110, and each metering chamber 110 is connected to an independent discharge pipe 420.

[0049] For example, a shut-off valve is provided on the discharge pipe 420, which is used to open and close the discharge pipe 420. The shut-off valve can be a ball valve, gate valve, or butterfly valve. In the example of this application, the bottom of each metering chamber 110 is connected to the discharge pipe 420.

[0050] For example, the tank body 100 is also provided with multiple overflow pipes 440, each overflow pipe 440 corresponding to one of the metering chambers 110. Each overflow pipe 440 is also equipped with a shut-off valve. The shut-off valve can be a ball valve, gate valve, or butterfly valve.

[0051] For example, the height of the overflow pipe 440 is the same as the height of the feed pipe 410.

[0052] The overflow pipe 440 effectively prevents liquid in the metering chamber 110 from overflowing due to excessive liquid level, ensuring that each metering chamber 110 operates within a safe liquid level range. Precise control of the shut-off valve allows for flexible adjustment of the overflow status, further enhancing operational safety and reliability, while avoiding material waste and ensuring the stability and accuracy of the metering process.

[0053] In one possible implementation, the metering assembly 300 includes a coarse adjustment member 310 and a fine adjustment member 320, both of which are disposed on the tank body 100 and extend into the metering chamber 110; the coarse adjustment member 310 is used to initially calibrate the volume of the metering chamber 110, and the fine adjustment member 320 is used to recalibrate the volume of the metering chamber 110.

[0054] The coarse adjustment component 310 is used for preliminary calibration of the volume of the metering chamber 110, quickly determining its approximate capacity range and providing a basic reference for metering operations. Based on this, the fine adjustment component 320 further precisely calibrates the volume of the metering chamber 110, achieving higher precision volume measurement through fine-tuning. This dual-adjustment mechanism effectively combines the advantages of rapid calibration and precise adjustment, improving metering accuracy and operational efficiency, ensuring the reliability and accuracy of metering results, and meeting the requirements of high-precision metering. It also solves the problem of interference from residual liquid in pipelines and liquid level fluctuations in traditional flow meters or weighing devices.

[0055] In one possible implementation, refer to Figure 2 and Figure 3 The coarse adjustment component 310 includes a coarse adjustment block 311, a coarse adjustment rod 312, and a coarse adjustment disc 313. One end of the coarse adjustment rod 312 passes through the metering chamber 110 and is connected to the coarse adjustment block 311. The other end of the coarse adjustment rod 312 is located outside the tank body 100 and is connected to the coarse adjustment disc 313. The coarse adjustment block 311 is configured to be inserted into the metering chamber 110 to calibrate the volume of the metering chamber 110.

[0056] The operator can rotate or move the coarse adjustment disc 313 to move the coarse adjustment rod 312 within the metering chamber 110, thereby inserting the coarse adjustment block 311 into the metering chamber 110 and quickly calibrating the volume range of the metering chamber 110. This not only simplifies operation but also allows for rapid calibration of the basic volume of the metering chamber 110, providing an accurate initial value for subsequent fine adjustments. The close cooperation between the coarse adjustment block 311 and the metering chamber 110 effectively reduces errors during volume calibration, improves metering efficiency, and lays the foundation for precise adjustment of the subsequent fine adjustment component 320, ensuring the high efficiency and reliability of the entire metering process.

[0057] For example, the coarse adjustment block 311 can be a sphere, cylinder, or columnar structure. The coarse adjustment rod is a threaded rod 312, which is threaded into the tank body 100. The coarse adjustment disc 313 is welded or threaded to the end of the coarse adjustment rod 312, and is located outside the tank body 100.

[0058] For example, the connection between the coarse adjustment rod 312 and the tank body 100 is higher than the height of the feed pipe 410.

[0059] For example, a sealing ring is provided between the coarse adjustment rod 312 and the tank body 100 to seal the gap between the coarse adjustment rod 312 and the tank body 100, so as to prevent gas from leaking from the coarse adjustment rod 312.

[0060] For example, the coarse adjustment lever 312 is provided with a scale so that the adjustment amount can be read according to the scale.

[0061] During use, the metering chamber 110 is first filled with liquid until it overflows from the overflow pipe 440. Then, the liquid in the metering chamber 110 is completely discharged through the discharge pipe 420 for metering, thus obtaining the maximum volume of the metering chamber 110. In subsequent use, after the metering chamber 110 is filled with material, the coarse adjustment block 311 is inserted into the liquid material to allow the material to be discharged from the overflow pipe 440, thereby adjusting the total amount of material in the metering chamber 110 and achieving material calibration.

[0062] In one possible implementation, refer to Figure 2 and Figure 4 The fine adjustment component 320 includes a fine adjustment block 321, a fine adjustment rod 322, and a fine adjustment disc 323. One end of the fine adjustment rod 322 passes through the metering chamber 110 and is connected to the fine adjustment block 321. The other end of the fine adjustment rod 322 is located outside the tank body 100 and is connected to the fine adjustment disc 323. The fine adjustment block 321 is configured to be inserted into the metering chamber 110 to calibrate the volume of the metering chamber 110.

[0063] The fine adjustment component 320 operates on the same principle as the coarse adjustment component 310. The operator finely adjusts the fine adjustment disc 323, causing the fine adjustment rod 322 to move slightly within the metering chamber 110. This allows the fine adjustment block 321 to be precisely inserted into the metering chamber 110, enabling accurate adjustment of its volume. This further improves metering accuracy based on the initial volume calibration achieved by the coarse adjustment component 310. The cooperation between the fine adjustment block 321 and the metering chamber 110 effectively reduces volume errors caused by factors such as liquid surface tension, temperature changes, or equipment vibration. The fine adjustment function of the fine adjustment component 320 enables high-precision volume calibration, ensuring the accuracy and reliability of the metering results. This combination of a dual-layer adjustment mechanism (coarse and fine adjustment) not only improves metering efficiency but also significantly enhances metering accuracy, making it suitable for applications requiring extremely high volume accuracy.

[0064] For example, the fine adjustment block 321 can be a sphere, cylinder, or columnar structure. The fine adjustment rod is a threaded rod, and the fine adjustment rod 322 is threaded into the tank body 100. The fine adjustment disc 323 is welded or threaded to the end of the fine adjustment rod 322, and the fine adjustment disc 323 is located outside the tank body 100.

[0065] For example, the connection point between the fine adjusting rod 322 and the tank body 100 is higher than the height of the feed pipe 410. Furthermore, the fine adjusting rod 322 and the coarse adjusting rod 312 are symmetrically arranged on the tank body 100.

[0066] For example, a sealing ring is provided between the fine adjusting rod 322 and the tank body 100 to seal the gap between the fine adjusting rod 322 and the tank body 100 and prevent gas from leaking from the fine adjusting rod 322.

[0067] For example, the fine adjustment lever 322 is provided with a scale so that the adjustment amount can be read according to the scale.

[0068] In one possible implementation, the volume of the fine adjustment block 321 is smaller than the volume of the coarse adjustment block 311.

[0069] Because of its small size, the fine adjustment block 321 can achieve finer volume adjustments when moving within the metering cavity 110, effectively compensating for any significant errors that may exist in the coarse adjustment component 310 during initial calibration. Through precise insertion and fine-tuning of the fine adjustment block 321, the volume of the metering cavity 110 can be accurately calibrated, further improving metering accuracy and ensuring high accuracy and reliability of the measurement results. This volume difference design fully leverages the advantages of both the coarse and fine adjustment components 310, achieving graded adjustment from coarse to fine, meeting high-precision metering requirements, and is particularly suitable for intermittent operations in fields such as fine chemicals and pharmaceuticals where volume control requirements are extremely stringent.

[0070] In one possible implementation, the metering feed tank further includes a preheating assembly 500, which includes a plurality of heat exchange tubes 510 that pass through the partition assembly 200 and extend into the metering chamber 110 to heat the material. The heat exchange tubes 510 are evenly distributed at the bottom of the metering chamber 110.

[0071] The preheating assembly 500 achieves efficient heating through multiple heat exchange tubes 510. These heat exchange tubes 510 pass through the partition assembly 200 and extend into the metering chamber 110, being evenly distributed at the bottom of the metering chamber 110. The dense arrangement of the heat exchange tube bundles 510 significantly increases the heat exchange area, and combined with fluid dynamics optimization, further improves the heat transfer coefficient. Compared with traditional jacketed or coiled heat exchange methods, this effectively solves the problem of low efficiency in traditional heat exchange. The high-efficiency heat exchange capability of the heat exchange tube bundles 510 not only shortens the heating or cooling time of materials but also improves production efficiency while reducing energy consumption, providing strong support for accurate metering and efficient processing of materials.

[0072] For example, the heat exchange tubes 510 are arranged inside the tank 100 along the length of the tank 100. Furthermore, on the cross-section of the tank 100, the heat exchange tubes 510 are arranged circumferentially around the central axis of the tank 100 at the bottom of the tank 100, and the heat exchange tubes 510 are arranged in multiple layers to further increase the contact area and improve the heat exchange efficiency.

[0073] In one possible implementation, refer to Figure 1 and Figure 6 The partition assembly 200 includes a half partition 210 and at least one full partition 220. The full partition 220 is disposed inside the tank body 100 to divide the tank body 100 into a plurality of metering chambers 110. The half partition 210 is disposed at both ends of the tank body 100 and connected to the full partition 220. The half partition 210 divides the two ends of the tank body 100 into an upper chamber 120 and a lower chamber 130.

[0074] For example, the full partition 220 is fixed inside the tank 100 by welding, and the full partition 220 has the same diameter as the inner diameter of the tank 100 to completely separate the tank 100.

[0075] For example, the full partition 220 can be configured as six. Two of them are located at the end caps at both ends of the tank body 100 to separate the end caps at both ends of the tank body 100.

[0076] For example, the half partition 210 is arranged along the length of the tank 100. One side of the half partition 210 is welded and fixed to the end cap of the tank 100, and the other side is welded and fixed to the full partition 220, so that the full partition 220, the half partition 210 and the end cap of the tank 100 together form two sealed upper chambers 120 and lower chambers 130, wherein the upper chamber 120 is located above the lower chamber 130.

[0077] For example, the heat exchange tube 510 extends into the lower chamber 130, and heat exchange medium pipes 520 are provided on the end caps of both ends of the tank body 100. The heat exchange medium pipes 520 extend into the lower chamber 130 and communicate with the heat exchange tube 510 to allow the heat exchange medium in the heat exchange tube 510 to circulate, forming a heat exchange path. For example, the heat exchange medium can be hot water.

[0078] For example, the partition plate 220 is provided with multiple heat exchange holes, and the heat exchange tube 510 passes through the heat exchange holes.

[0079] For example, a sealing ring is provided between the heat exchange tube 510 and the heat exchange hole to seal the gap between the heat exchange hole and the heat exchange tube 510, so as to prevent the liquid in different metering chambers 110 from flowing into each other.

[0080] In one possible implementation, refer to Figure 1 and Figure 5The metering feed tank also includes a gas collection assembly 600, which includes a gas phase breather 610 and a connecting pipe 620. The connecting pipe 620 is connected to the gas phase breather 610 and to an external gas source. The gas phase breather 610 extends into each metering chamber 110 and is provided with multiple breath holes 611, which are correspondingly located within the metering chamber 110.

[0081] A gas phase breathing tube 610 is inserted into each metering chamber 110, and multiple breathing holes 611 are provided on the tube wall. These breathing holes 611 are precisely aligned with the metering chambers 110 to ensure that gas can enter and exit smoothly. A connecting tube 620 connects the gas phase breathing tube 610 to an external gas source to form a complete gas circulation system.

[0082] The gas collection assembly 600 effectively balances the gas pressure within the metering chamber 110, preventing pressure fluctuations caused by liquid inflow and outflow, thus ensuring the stability and safety of the metering process. Through the breather 611, gas within the metering chamber 110 can be promptly discharged or replenished, preventing gas accumulation or negative pressure formation and reducing the impact of pressure changes on metering accuracy. Simultaneously, the connection pipe 620 to an external gas source allows for gas recycling or discharge, further optimizing the operating environment and improving equipment reliability. This layout of the gas collection assembly 600 not only ensures stable metering operations but also enhances the equipment's adaptability to complex operating conditions, providing safer and more efficient technical support for intermittent operations in fields such as fine chemicals.

[0083] For example, the gas phase breather 610 is located at the top of the tank 100 and above the feed pipe 410 and the overflow pipe 440 to prevent liquid from flowing into the gas phase breather 610.

[0084] In one possible implementation, the breathing hole 611 is located in the direction opposite to the liquid surface inside the metering chamber 110 of the gas phase breathing tube 610.

[0085] The breather hole 611 is positioned in the gas phase breather tube 610 away from the liquid surface inside the metering chamber 110. This effectively prevents liquid materials from entering the gas phase breather tube 610 through the breather hole 611, thus preventing liquid from clogging the breather hole 611 or entering the gas circulation system. This arrangement ensures smooth gas flow, further improving the stability of the gas pressure balance within the metering chamber 110. Simultaneously, this layout reduces unnecessary mixing between liquid and gas, avoiding material waste and potential contamination risks, and ensuring the accuracy and safety of the metering process.

[0086] In one possible implementation, the two ends of the gas phase breathing tube 610 extend into the upper chamber 120, and the tank body 100 is provided with a waste liquid discharge port 630, which is connected to the upper chamber 120. This effectively avoids cross-contamination of materials caused by the flow of condensate.

[0087] The condensate after the liquid in the metering chamber 110 vaporizes enters the gas phase breather pipe 610 through the breather hole 611 on the wall of the tank 100, and flows into the upper chambers 120 at both ends of the gas phase breather pipe 610, and is discharged through the waste liquid discharge port 630.

[0088] The gas-phase breather tube 610 extends to both ends of the upper chamber 120 of the tank 100, ensuring smooth gas flow between the metering chamber 110 and the upper chamber 120, effectively balancing the gas pressure inside the tank 100 and avoiding pressure fluctuations caused by liquid inflow and outflow. Simultaneously, the waste liquid discharge port 630 on the tank 100 is connected to the upper chamber 120, enabling timely discharge of waste liquid from the upper chamber 120, preventing waste liquid accumulation from adversely affecting equipment operation and material metering. This not only optimizes the gas pressure balance and waste liquid treatment within the tank 100, improving the operational stability and safety of the equipment, but also reduces operational complexity, prevents material contamination, and ensures the purity and quality of materials, providing efficient, safe, and reliable technical support for intermittent operations in fields such as fine chemicals.

[0089] For example, the external gas source connected to the connecting pipe 620 is an inert gas.

[0090] For example, the downstream system pipelines after the discharge pipe 420 are arranged in a progressively decreasing layout to minimize the impact of material residue. If the residue still has an impact, the fine-tuning system adjusts the metering solvent using a binary trial-and-error method.

[0091] The specific implementation process is as follows:

[0092] 1. Calibration of metering chamber 110. After the metering system design is completed, adjust the coarse adjustment component 310 and the fine adjustment component 320 to the maximum liquid level position. Perform liquid filling and metering on each metering chamber 110, record the maximum volume of each metering chamber 110, and complete the calibration of the metering chamber 110.

[0093] 2. Calibration of coarse adjustment element 310 and fine adjustment element 320. The calibration method is the same. Taking coarse adjustment element 310 as an example, with the maximum solvent volume known, the volume of metering cavity 110 at different scales is measured, and the scale of coarse adjustment rod 312 is calibrated accordingly. The calibration process of fine adjustment element 320 is similar, used to further improve metering accuracy.

[0094] 3. Operating Procedures. First, perform nitrogen purging and close the valves of the feed pipe 410, overflow pipe 440, and discharge pipe 420.

[0095] Set the gas phase pressure regulation system to manual mode and pressurize and depressurize the metering tank system until the oxygen content is less than 0.1%. After successful purging, switch the pressure control system to automatic mode. Then, feed the raw materials. Open the overflow pipe 440, and then open the feed pipe 410. Connect the discharge system of the raw material storage tank to the feed pipe 410 port of the metering tank, and connect the feed system of the raw material storage tank to the overflow pipe 440 port of the metering tank. Then, after metering, close the feed pipe 410 and the overflow pipe 440. When the liquid level in the raw material tank drops to a stable level after operation, it is considered that the metering tank has reached the set volume. First, close the feed pipe 410, and then close the overflow pipe 440. Then, discharge: close the feed pipe 410 and the overflow pipe 440, and open the discharge pipe 420. Connect the feed pipe 410 port of the reaction tank to the discharge pipe 420 port of the metering tank. When the liquid level in the reaction tank rises to a stable level after operation, it is considered that the metering tank has been emptied. Finally, close all valves.

[0096] Example 1: A process requires handling three types of Class A liquid materials with an inlet temperature of 40℃ and required inlet volumes of 120L, 160L, and 200L respectively. The metering accuracy for each material must reach 0.5%. Compared to a conventional single-tank solution, the metering feed tank proposed in this application significantly reduces the equipment configuration: the number of containers is reduced from 3 to 1, saving 2 units; the number of instruments is reduced by 14 units (eliminating the need for 3 level transmitters, 3 inlet flow meters, and 3 outlet flow meters; and reducing the number of pressure transmitters, air supply valves, and exhaust valves by 2 each); and the number of valves is reduced by 3. Although this solution requires the addition of 3 overflow pipes 440, 3 sets each of valves and coarse and fine adjustment components 310 and 320, the overall equipment quantity is still significantly reduced. Since the container equipment is small in size, the volume has a limited impact on the cost (the cost difference between a 120L and a 2000L container is not significant). Therefore, reducing the number of containers by two can significantly reduce the equipment investment cost, while simplifying the system layout and operation and maintenance, fully demonstrating the advantages of this invention in terms of equipment integration and economy.

[0097] Example 2: A certain process needs to process four types of Class A liquid materials with an inlet temperature of 40℃ and required inlet volumes of 120L, 160L, 200L, and 220L, respectively, with a metering accuracy of 0.5% for each. Compared with the conventional single-tank solution, the metering feed tank of this application significantly optimizes the equipment configuration: the number of containers is reduced from 4 to 1, saving 3 units; the number of instruments is reduced by 15 units (eliminating the need for 4 level transmitters, 4 inlet and 4 outlet flow meters, and 3 pressure transmitters); the number of valves is reduced by 6 units (eliminating the need for 3-4 inlet and 4 outlet flow regulating valves). Although 4 overflow pipes 440, valves, and 4 sets of coarse regulating components 310 and fine regulating components 320 are required, the overall equipment quantity is still significantly reduced. Since the cost of small-capacity containers is not sensitive to size (the cost difference between 120L and 2000L containers is not significant), reducing the number of containers by 3 can significantly reduce equipment investment, while simplifying system layout and operation and maintenance, further highlighting the advantages of this invention in terms of equipment integration, economy and ease of operation.

[0098] Example 3: A certain process requires the processing of five types of Class A liquid materials. The feed temperature is 40℃, and the required feed rates are 120L, 160L, 200L, 220L, and 250L, respectively, with a metering accuracy of 0.5% for each. Compared with the conventional single-tank solution, the metering feed tank proposed in this application significantly optimizes the equipment configuration: the number of containers is reduced from 5 to 1, saving 4 units; the number of instruments is reduced by 16 (eliminating the need for 5 level transmitters, 5 feed and 5 discharge flow meters, and 4 pressure transmitters); and the number of valves is reduced by 9 (eliminating the need for 4 air supply valves, 4 exhaust valves, and 4 feed and 4 discharge flow regulating valves). Although 5 overflow pipes 440, valves, and 5 sets of coarse regulating components 310 and fine regulating components 320 are required, the overall equipment quantity is still significantly reduced. Since the cost of small-capacity containers is not sensitive to size (the cost difference between 120L and 2000L containers is not significant), reducing the number of containers by 4 can significantly reduce equipment investment. At the same time, the system layout is more compact and the operation and maintenance are more convenient, further highlighting the outstanding advantages of this invention in terms of equipment integration, economy and operational efficiency.

[0099] The metering feed tank provided in this embodiment is divided into multiple independent metering chambers 110 by a partition component 200 disposed within the tank body 100. Each metering chamber 110 is equipped with an independent metering component 300 and an inlet / outlet component 400. The partition component 200 divides the tank body 100 into multiple independent metering chambers 110, each equipped with a dedicated metering component 300, enabling precise metering of the material volume within the chamber 110, ensuring high accuracy and reliability of material metering. Simultaneously, multiple inlet / outlet components 400 are respectively disposed in each metering chamber 110, achieving efficient inlet and outlet of various materials, effectively avoiding mutual interference and cross-contamination between materials, improving the flexibility and safety of the feeding operation, and reducing the number of equipment and investment costs compared to traditional multi-tank systems.

[0100] Finally, it should be noted that other embodiments of this application will readily conceive of by those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and alterations may be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A metering feed tank characterized by, include: Tank body (100); A dividing assembly (200) is disposed within the tank body (100) to divide the tank body (100) into multiple independent metering chambers (110); Multiple metering components (300) are respectively disposed in the metering chamber (110) to measure the volume of the material in the metering chamber (110); Multiple feeding and discharging assemblies (400) are respectively disposed on the metering chamber (110) to allow various materials to enter and exit the corresponding metering chamber (110); The metering assembly (300) includes a coarse adjustment component (310) and a fine adjustment component (320), both of which are disposed on the tank body (100) and extend into the metering chamber (110). The coarse adjustment component (310) is used to initially calibrate the volume of the metering chamber (110), and the fine adjustment component (320) is used to recalibrate the volume of the metering chamber (110). The coarse adjustment component (310) includes a coarse adjustment block (311), a coarse adjustment rod (312), and a coarse adjustment disc (313). One end of the coarse adjustment rod (312) passes through the metering chamber (110) and is connected to the coarse adjustment block (311). The other end of the coarse adjustment rod (312) is located outside the tank body (100) and is connected to the coarse adjustment disc (313). The coarse adjustment block (311) is configured to be inserted into the metering chamber (110) to calibrate the volume of the metering chamber (110). The fine adjustment component (320) includes a fine adjustment block (321), a fine adjustment rod (322), and a fine adjustment disc (323). One end of the fine adjustment rod (322) passes through the metering chamber (110) and is connected to the fine adjustment block (321). The other end of the fine adjustment rod (322) is located outside the tank body (100) and is connected to the fine adjustment disc (323). The fine adjustment block (321) is configured to be inserted into the metering chamber (110) to calibrate the volume of the metering chamber (110). It also includes a gas collection assembly (600), which includes a gas phase breathing tube (610) and a connecting tube (620). The connecting tube (620) is connected to the gas phase breathing tube (610) and is connected to an external gas source. The gas phase breathing tube (610) extends into each of the metering chambers (110). The gas phase breathing tube (610) is provided with a plurality of breathing holes (611), which are correspondingly arranged in the metering chambers (110).

2. A gravimetric feed tank according to claim 1, characterized in that The volume of the fine adjustment block (321) is smaller than the volume of the coarse adjustment block (311).

3. A gravimetric feed tank according to claim 1 or 2, characterized in that It also includes a preheating assembly (500) comprising a plurality of heat exchange tubes (510) passing through the partition assembly (200) and extending into the metering chamber (110) to heat the material, the heat exchange tubes (510) being evenly distributed at the bottom of the metering chamber (110).

4. The metering feed tank according to claim 1 or 2, characterized in that, The partition assembly (200) includes a half partition (210) and at least one full partition (220). The full partition (220) is disposed inside the tank body (100) to divide the tank body (100) into a plurality of metering chambers (110). The half partition (210) is disposed at both ends of the tank body (100) and connected to the full partition (220). The half partition (210) divides both ends of the tank body (100) into an upper chamber (120) and a lower chamber (130).

5. The metering feed tank according to claim 1, characterized in that, The breathing hole (611) is located in the direction away from the liquid surface inside the metering chamber (110) of the gas phase breathing tube (610).

6. The metering feed tank according to claim 4, characterized in that, The two ends of the gas phase breathing tube (610) extend into the upper chamber (120) respectively. The tank (100) is provided with a waste liquid discharge port (630), which is connected to the upper chamber (120).

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