A double-effect concentrator

Abstract

The embodiment of the present application relates to a concentrator, and discloses a double-effect concentrator, which comprises a feed pump connected to a feed pipeline to force-feed materials, a double-effect evaporation chamber connected to the feed pump to process the materials input by the feed pump, a circulating pump connected to the double-effect evaporation chamber to output the materials in the double-effect evaporation chamber, a single-effect evaporation chamber connected to the circulating pump to receive the materials output by the circulating pump and process the materials, and a discharge pump connected to the single-effect evaporation chamber to connect to a discharge pipeline and force-output the materials in the single-effect evaporation chamber to the discharge pipeline. The feed pump realizes forced feeding of the materials; the circulating pump pushes the materials to flow between the double-effect and single-effect evaporation chambers, forms a cross-effect circulating mechanism, and improves the uniformity of material heating and the stability of material processing; and the discharge pump forces the materials to be output, realizes a continuous process of "feeding - circulating processing - discharging", solves the problem of low efficiency caused by intermittent operation of traditional equipment, and guarantees the continuity and sustainability of the concentration process.

Description

Technical Field

[0001] This application relates to the field of concentrator technology, and more particularly to a double-effect concentrator. Background Technology

[0002] Double-effect concentrators are key equipment for material concentration and processing, and are widely used in various industries such as pharmaceuticals, food, and chemicals. In the pharmaceutical field, especially in the concentration process of materials such as traditional Chinese medicine extracts, the requirements for the equipment's continuous operation capability, material processing stability, and concentration efficiency are extremely high.

[0003] Traditional double-effect evaporators often employ intermittent feeding and discharging methods, resulting in inadequate material conveying and processing path design. They typically rely on a single or simple pump assembly for material transfer, lacking a dedicated cross-effect circulation mechanism. In actual operation, the feeding stage relies on natural feeding or simple pump conveying, which easily leads to insufficient feeding power and large flow fluctuations. The material flow between the first and second effect evaporation chambers lacks a stable circulation drive, resulting in uneven heating of the material and affecting the consistency of the concentration effect. Furthermore, the discharge stage lacks a targeted forced output structure, making it difficult to achieve continuous and stable discharge of the concentrate. Utility Model Content

[0004] One object of this application is to provide a dual-effect concentrator that at least solves the above-mentioned problems.

[0005] To achieve the above objectives, some embodiments of this application provide a dual-effect concentrator, comprising:

[0006] A feed pump is used to connect to a feed pipe and force the material to be transported.

[0007] The double-effect evaporator is connected to the feed pump to process the material input by the feed pump;

[0008] A circulating pump is connected to the double-effect evaporator to output the material inside the double-effect evaporator.

[0009] The single-effect evaporation chamber is connected to the circulating pump to receive the material output from the circulating pump and process the material.

[0010] The discharge pump is connected to the first-effect evaporator and is used to connect to the discharge pipe, forcibly outputting the material from the first-effect evaporator to the discharge pipe.

[0011] Compared with related technologies, the solution provided in this application constructs a complete double-effect concentrated material conveying and processing path by setting up a connected structure of a feed pump, a second-effect evaporation chamber, a circulation pump, a first-effect evaporation chamber, and a discharge pump. The feed pump enables forced conveying of materials to the second-effect evaporation chamber, ensuring initial feeding power. The circulation pump drives the materials to flow between the second-effect and first-effect evaporation chambers, forming a cross-effect circulation mechanism, improving the uniformity of material heating and processing stability. The first-effect evaporation chamber performs deep concentration processing on the circulating materials, while the discharge pump forces the concentrated materials to be output to the discharge pipe, realizing a continuous process of "feeding-circulation processing-discharge," solving the problem of low efficiency caused by intermittent operation of traditional equipment, and ensuring the continuity and consistency of the concentration process.

[0012] By forcibly increasing the material flow rate in the pipeline through a circulating pump, the fluidity of the material in the pipeline and equipment is enhanced, effectively solving the problem of easy sedimentation and slow flow of high-viscosity materials (such as traditional Chinese medicine extracts) in traditional concentration equipment, improving the equipment's adaptability to high-viscosity materials, and ensuring the smoothness of the concentration process. Attached Figure Description

[0013] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0014] Figure 1 This is a schematic diagram of the structure of the dual-effect concentrator provided in the embodiments of this disclosure;

[0015] Figure 2 This is a schematic diagram of the drug flow in the dual-effect concentrator provided in this embodiment;

[0016] Figure 3 This is a schematic diagram of the flow of liquid medicine and gas in the dual-effect concentrator provided in the embodiments of this disclosure.

[0017] Figure label:

[0018] 10: Feed pump; 20: Second-effect evaporator; 30: Circulation pump; 40: First-effect evaporator; 50: Discharge pump; 60: Second-effect heater; 70: First-effect heater. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0021] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0022] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0023] Unless otherwise stated, the term "multiple" means two or more.

[0024] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0025] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0027] Combination Figures 1 to 3 As shown in the embodiment of this disclosure, a double-effect concentrator includes: a feed pump 10, a second-effect evaporation chamber 20, a circulation pump 30, a first-effect evaporation chamber 40, and a discharge pump 50.

[0028] The feed pump 10 is connected to the feed pipe to force the material to be transported; the second-effect evaporator 20 is connected to the feed pump 10 to process the material input by the feed pump 10; the circulation pump 30 is connected to the second-effect evaporator 20 to output the material in the second-effect evaporator 20; the first-effect evaporator 40 is connected to the circulation pump 30 to receive the material output by the circulation pump 30 and process the material; the discharge pump 50 is connected to the first-effect evaporator 40 and is connected to the discharge pipe to force the material in the first-effect evaporator 40 to be output to the discharge pipe.

[0029] The double-effect concentrator provided in this embodiment constructs a complete double-effect material conveying and processing path by setting up a connected structure of feed pump 10, second-effect evaporation chamber 20, circulation pump 30, first-effect evaporation chamber 40, and discharge pump 50. Feed pump 10 enables forced conveying of material to second-effect evaporation chamber 20, ensuring initial feeding power. Circulation pump 30 drives material to circulate between second-effect evaporation chamber 20 and first-effect evaporation chamber 40, forming a cross-effect circulation mechanism to improve the uniformity of material heating and processing stability. First-effect evaporation chamber 40 performs deep concentration processing on the circulating material, while discharge pump 50 forces the concentrated material to be output to the discharge pipe, realizing a continuous process of "feeding-circulation processing-discharge". This solves the problem of low efficiency caused by intermittent operation of traditional equipment and ensures the continuity and consistency of the concentration process.

[0030] By forcibly increasing the material flow rate in the pipeline through the circulating pump 30, the fluidity of the material in the pipeline and equipment is enhanced, effectively solving the problem of easy sedimentation and slow flow of high-viscosity materials (such as traditional Chinese medicine extracts) in traditional concentration equipment, improving the equipment's adaptability to high-viscosity materials, and ensuring the smoothness of the concentration process.

[0031] In addition, in this embodiment, the material first enters the evaporation chamber (such as the double-effect evaporation chamber 20 receiving material from the feed pump 10), where it can directly contact the steam inside the evaporation chamber, thus initially completing gas-liquid exchange and preheating. The steam environment inside the evaporation chamber provides mild preheating conditions for the material, avoiding local overheating or component damage that may occur when the material directly enters the heater due to instantaneous high temperatures (especially suitable for heat-sensitive materials such as traditional Chinese medicine extracts). In contrast, in the traditional "heater first, then evaporation chamber" process, the material enters the heater directly without preheating, which can easily lead to uneven heating due to excessive temperature differences, affecting the subsequent evaporation effect.

[0032] After preliminary treatment in the evaporation chamber, the material is then sent to the heater via circulating pump 30 (e.g., material from the double-effect evaporation chamber 20 enters the first-effect evaporation chamber 40 and its corresponding heater via circulating pump 30). At this point, the material has reached a certain temperature and state through pretreatment in the evaporation chamber, allowing it to absorb heat more evenly and reducing heat load fluctuations within the heater. Simultaneously, the combination of "circulating pump 30 driving the material to circulate between the first and second effects" and the "evaporation followed by heating" sequence allows the material to undergo multiple synergistic effects of "evaporation-heating" during circulation, gradually increasing its concentration and avoiding the material instability issues caused by excessive heating in traditional processes.

[0033] The feed pump 10 directly delivers the material into the evaporation chamber, rather than through the heater first, thus stabilizing the feed flow rate through the buffering effect of the evaporation chamber. The material entering the evaporation chamber first reduces the direct impact of feed fluctuations on the heater, ensuring a more stable quantity and state of material subsequently entering the heater. Furthermore, the initial evaporation in the evaporation chamber reduces the material viscosity, improving its flowability when it enters the heater and enhancing heating efficiency (especially suitable for high-viscosity traditional Chinese medicine extracts).

[0034] This embodiment uses a control system to monitor the temperature parameters of the evaporation chamber and heater in real time. The "evaporation first, then heating" sequence brings the temperature monitoring point (evaporation chamber) closer to the initial material processing stage, allowing for earlier detection of material temperature changes and adjustment of subsequent heater operating parameters, forming a more precise "pretreatment-heating-re-evaporation" closed-loop control. In contrast, in traditional processes, the heater precedes the evaporation chamber, and temperature feedback lags behind the material processing stage, resulting in a slower temperature control response and making it difficult to achieve the high-precision effect of "concentration fluctuation control within ±1%".

[0035] The design of "passing through the evaporation chamber first, then the heater" optimizes the material processing sequence, achieving milder preheating, more uniform heating, more stable feeding, and more precise temperature control. Especially in the concentration of heat-sensitive and high-viscosity materials, it can better ensure product quality stability and equipment operating efficiency, which is highly consistent with the emphasis on "improving concentration efficiency, reducing energy consumption, and adapting to high-viscosity materials".

[0036] Optionally, it also includes: a double-effect heater 60, disposed between the double-effect evaporation chamber 20 and the circulation pump 30, and the liquid connection port between the double-effect heater 60 and the circulation pump 30 is located below the liquid connection port between the double-effect heater 60 and the double-effect evaporation chamber 20.

[0037] A second-effect heater 60 is added between the second-effect evaporator 20 and the circulating pump 30. The liquid connection port between the second-effect heater 60 and the circulating pump 30 is located below the connection port between the second-effect evaporator 20 and the second-effect evaporator 20. This allows the material to be preheated by the second-effect heater 60 before entering the circulating pump 30, increasing the initial temperature of the material. Simultaneously, the lower connection port design utilizes gravity to assist material flow, reducing the conveying resistance of the circulating pump 30 and enhancing the heating efficiency and circulation smoothness of the material within the second-effect system. This lays the temperature foundation for the subsequent deep concentration in the first-effect evaporator 40.

[0038] Optionally, the liquid connection port between the double-effect evaporator 20 and the feed pump 10 is located above the gas connection port between the double-effect heater 60 and the double-effect evaporator 20.

[0039] The liquid connection port between the double-effect evaporator 20 and the feed pump 10 is located above the gas connection port between the double-effect heater 60 and the double-effect evaporator 20. This allows the material input by the feed pump 10 to first enter the upper region of the double-effect evaporator 20, ensuring sufficient contact with the steam within the evaporator and initially completing gas-liquid exchange and preheating. Simultaneously, it avoids fluctuations caused by the feed directly impacting the lower liquid surface, reducing foam generation during evaporation and improving the material handling stability of the double-effect evaporator 20.

[0040] Optionally, it also includes: a first-effect heater 70, disposed between the first-effect evaporation chamber 40 and the discharge pump 50, and the liquid connection port between the first-effect heater 70 and the discharge pump 50 is located below the liquid connection port between the first-effect heater 70 and the first-effect evaporation chamber 40.

[0041] A first-effect heater 70 is installed between the first-effect evaporation chamber 40 and the discharge pump 50. The liquid connection port of the first-effect heater 70 and the discharge pump 50 is located below the connection port of the first-effect evaporation chamber 40. This allows the material in the first-effect evaporation chamber 40 to be reheated and concentrated by the first-effect heater 70 before entering the discharge pump 50, improving the uniformity of the discharge concentration. The lower connection port is designed to utilize gravity to assist material flow, reducing the energy consumption of the discharge pump 50 and ensuring a stable output of concentrated liquid.

[0042] Optionally, the liquid connection port of the first-effect evaporation chamber 40 and the circulation pump 30 is located above the gas connection port of the first-effect heater 70 and the first-effect evaporation chamber 40.

[0043] The liquid connection port between the first-effect evaporator 40 and the circulating pump 30 is located above the gas connection port between the first-effect heater 70 and the first-effect evaporator 40. This allows the material delivered to the first-effect evaporator 40 by the circulating pump 30 to first enter the upper area, where it comes into efficient contact with the steam inside the evaporator, thus enhancing heat exchange efficiency. Simultaneously, it avoids localized overheating caused by the material directly impacting the heater interface, protecting the equipment and improving the concentration effect of the first-effect evaporator 40.

[0044] Optionally, it also includes a control module electrically connected to the feed pump 10, the circulation pump 30 and the discharge pump 50 respectively, to adjust the pump frequency and opening degree.

[0045] The control module is electrically connected to the feed pump 10, circulation pump 30, and discharge pump 50 to achieve precise adjustment of the frequency of each pump and the valve opening. The control module can dynamically adjust the pump operating parameters according to the preset program, breaking the limitations of traditional manual operation, improving the coordination of feed rate, circulation rate, and discharge rhythm, realizing automated control of the concentration process, and reducing human operation error.

[0046] For example, the control module includes a PLC control board, which adjusts the temperature and flow rate of each evaporation chamber and heater in real time, controls the concentration fluctuation within ±1%, and achieves dynamic balance between feeding and discharging to improve product quality.

[0047] Optionally, it also includes: a sensor electrically connected to the control module to feed back monitoring data to the control module, and the control module adjusts the operating status of the circulating pump 30 according to a preset program and parameters.

[0048] The electrical connection between the sensors and the control module constitutes a real-time monitoring and feedback system. The sensors continuously monitor key parameters such as feed rate, output concentration, temperature, and pressure and feed them back to the control module. Based on the detection data, the control module automatically adjusts the operating status of the circulating pump 30, forming a closed-loop control mechanism of "detection-feedback-adjustment" to ensure that the concentration process is always within the preset parameter range, thereby improving the stability of equipment operation and the consistency of product quality.

[0049] Optionally, it also includes: a display module, electrically connected to the control module, to display the operating status, parameter settings and historical data, and to operate the start and stop of the feed pump 10, the circulation pump 30 / discharge pump 50 and adjust the parameters.

[0050] The electrical connection between the display module and the control module enables visualized management of the equipment's operating status. Operators can view operating parameters and historical data in real time through the display module, gaining an intuitive understanding of the equipment's operating condition. It also supports manual operation, facilitating flexible adjustments to pump start / stop and parameter settings under special operating conditions. This balances the efficiency of automated control with the flexibility of manual intervention, enhancing the ease of equipment operation.

[0051] For example, the display module includes a touch screen to display operating status, parameter settings and historical data, and can be manually operated to start and stop the feed pump 10, circulation pump 30 / discharge pump 50 and adjust parameters.

[0052] Optionally, the circulating pump 30 is connected to the second-effect heater 60 and the first-effect evaporation chamber 40 by a chuck, the feed pump 10 is connected to the second-effect evaporation chamber 20 by a chuck, and / or the discharge pump 50 is connected to the first-effect heater 70 by a chuck to prevent leakage.

[0053] The circulating pump 30 is connected to the second-effect heater 60 and the first-effect evaporation chamber 40, the feed pump 10 is connected to the second-effect evaporation chamber 20, and the discharge pump 50 is connected to the first-effect heater 70 using a chuck. The tight fit of the chuck structure effectively prevents material leakage during transport. This avoids material loss and environmental pollution, while ensuring stable internal pressure and improving the sealing and operational safety of the concentration system.

[0054] Optionally, the connection between the second-effect heater 60 and the second-effect evaporation chamber 20 is made by a chuck, and / or the connection between the first-effect heater 70 and the first-effect evaporation chamber 40 is made by a chuck to prevent leakage.

[0055] The connection between the double-effect heater 60 and the double-effect evaporation chamber 20, and between the first-effect heater 70 and the first-effect evaporation chamber 40, is achieved using a chuck connection. The high-strength sealing performance of the chuck connection ensures leak-free gas-liquid transport between the heater and the evaporation chamber. This maintains stable pressure and temperature within the evaporation chamber, preventing heat loss and material contamination, and improving heating efficiency and the reliability of the concentration process.

[0056] For example, the production of concentrated traditional Chinese medicine extracts (high-viscosity materials) can be taken as an example.

[0057] Check the equipment connection status: Confirm that the feed pump 10 is tightly connected to the second-effect evaporator 20, the circulation pump 30 is tightly connected to the second-effect heater 60 and the first-effect evaporator 40, and the discharge pump 50 is tightly connected to the first-effect heater 70, with no loosening or leakage risks.

[0058] Process parameters can be set via the touch screen display module, including the temperature of the first-effect heater 70 at 85-90℃, the temperature of the second-effect heater 60 at 70-75℃, the target value for feed rate control, and the target value for output concentration (concentration ratio 1.4).

[0059] Start the feed pump 10, and the material is forcibly transported from the raw material tank to the second-effect evaporation chamber 20 via the feed pump 10. At this time, the liquid connection port between the second-effect evaporation chamber 20 and the feed pump 10 is located above the gas connection port between the second-effect heater 60 and the second-effect evaporation chamber 20. The material enters the upper area of ​​the second-effect evaporation chamber 20 and is preheated by initial contact with the steam in the chamber, reducing foam generation.

[0060] The PLC control module stabilizes the feed rate control accuracy within ±5% by adjusting the frequency of the feed pump 10 and the valve opening, ensuring feed stability.

[0061] When the circulation pump 30 is started, the material in the second-effect evaporation chamber 20 is transported to the first-effect evaporation chamber 40 via the circulation pump 30. Because the second-effect heater 60 is located between the second-effect evaporation chamber 20 and the circulation pump 30, and the liquid connection port between the second-effect heater 60 and the circulation pump 30 is located below the connection port between the second-effect heater 60 and the second-effect evaporation chamber 20, the material is preheated by the second-effect heater 60 before entering the circulation pump 30, reducing the conveying resistance and improving the heating efficiency.

[0062] The material continuously circulates between the first-effect evaporation chamber 40 and the second-effect evaporation chamber 20 under the action of the circulating pump 30. The liquid connection port between the first-effect evaporation chamber 40 and the circulating pump 30 is located above the gas connection port between the first-effect heater 70 and the first-effect evaporation chamber 40. The material enters the upper part of the first-effect evaporation chamber 40 and exchanges heat efficiently with the steam, avoiding local overheating. Sensors monitor the temperature, pressure, and material flow rate of each effect in real time, and the data is fed back to the PLC control module to dynamically adjust the speed of the circulating pump 30 to ensure heating uniformity.

[0063] When the material is heated and concentrated to the target concentration range in the first-effect evaporation chamber 40 by the first-effect heater 70, the discharge pump 50 is started. The liquid connection port of the first-effect heater 70 and the discharge pump 50 is located below the connection port of the first-effect evaporation chamber 40, and the material flow is assisted by gravity, reducing the energy consumption of the discharge pump 50.

[0064] The PLC control module adjusts the frequency of the discharge pump and the valve opening, and combines the feedback data from the concentration sensor to stabilize the discharge concentration control accuracy within ±3%, thus achieving precise output of the concentrate.

[0065] Throughout the production process, sensors continuously monitor parameters such as feed rate, discharge concentration, temperature, and pressure at each stage, transmitting these parameters in real time to the PLC control module. The control module automatically adjusts the operating status of the feed pump 10, circulation pump 30, and discharge pump 50 according to a preset program, forming a closed-loop control system. Operators can view equipment operating data in real time via a touchscreen and manually adjust parameters when necessary, balancing automation and flexibility.

[0066] Through the above production process, the equipment achieves continuous feeding and discharging concentration of traditional Chinese medicine extracts, with dynamic balance between feeding and discharging, and uninterrupted operation. The use of a forced circulation pump (30) increases the pipeline flow rate, ensuring smooth flow of high-viscosity materials within the equipment without sedimentation; the chuck connection structure ensures no leakage throughout the process, guaranteeing material purity and production safety; and PLC automated control keeps concentration fluctuations within ±1%, significantly improving product quality stability.

[0067] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims, and the foregoing embodiments should be considered exemplary and non-limiting.

Claims

1. A double-effect concentrator, characterized in that, include: A feed pump is used to connect to a feed pipe and force the material to be transported. The double-effect evaporator is connected to the feed pump to process the material input by the feed pump; A circulating pump is connected to the double-effect evaporator to output the material inside the double-effect evaporator. The single-effect evaporation chamber is connected to the circulating pump to receive the material output from the circulating pump and process the material. The discharge pump is connected to the first-effect evaporator and is used to connect to the discharge pipe, forcibly outputting the material from the first-effect evaporator to the discharge pipe.

2. The double-effect concentrator according to claim 1, characterized in that, Also includes: The double-effect heater is located between the double-effect evaporation chamber and the circulating pump, and the liquid connection port between the double-effect heater and the circulating pump is located below the liquid connection port between the double-effect heater and the double-effect evaporation chamber.

3. The double-effect concentrator according to claim 2, characterized in that, The liquid connection port between the double-effect evaporator and the feed pump is located above the gas connection port between the double-effect heater and the double-effect evaporator.

4. The double-effect concentrator according to any one of claims 1 to 3, characterized in that, Also includes: A first-effect heater is located between the first-effect evaporation chamber and the discharge pump, and the liquid connection port between the first-effect heater and the discharge pump is located below the liquid connection port between the first-effect heater and the first-effect evaporation chamber.

5. The double-effect concentrator according to claim 4, characterized in that, The liquid connection port between the first-effect evaporation chamber and the circulating pump is located above the gas connection port between the first-effect heater and the first-effect evaporation chamber.

6. The double-effect concentrator according to claim 1, characterized in that, Also includes: The control module is electrically connected to the feed pump, circulation pump, and discharge pump respectively to adjust the pump frequency and opening degree.

7. The double-effect concentrator according to claim 6, characterized in that, Also includes: The sensor is electrically connected to the control module to feed back monitoring data to the control module, which then adjusts the operating status of the circulating pump according to preset programs and parameters.

8. The double-effect concentrator according to claim 6, characterized in that, Also includes: The display module is electrically connected to the control module to display the operating status, parameter settings, and historical data. It can also operate the feed pump, circulation pump / discharge pump to start and stop, and adjust parameters.

9. The dual-effect concentrator according to claim 4, characterized in that, The circulating pump is connected to the second-effect heater and the first-effect evaporation chamber by a chuck, the feed pump is connected to the second-effect evaporation chamber by a chuck, and / or the discharge pump is connected to the first-effect heater by a chuck to prevent leakage.

10. The dual-effect concentrator according to claim 4, characterized in that, The connection between the double-effect heater and the double-effect evaporation chamber is made by a chuck, and / or the connection between the single-effect heater and the single-effect evaporation chamber is made by a chuck, to prevent leakage.

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