An extraction centrifuge for pesticide technical product production
Patent Information
- Application Number
- CN202521880783.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-02
- Publication Date
- 2026-09-18
- Estimated Expiration
- 2035-09-02
AI Technical Summary
[0003]在农药原药生产过程中，萃取离心机是实现液和液萃取分离的重要设备，然而，现有的萃取离心机在实际应用中存在一些问题；其一，进料系统难以精确控制含有农药原药的混合液和萃取剂的进料比例，导致混合不均匀，影响萃取效果；其二，转鼓内部结构设计不合理，液体在离心分离过程中流动不畅，分离效率较低，无法满足大规模生产需求；其三，出料系统不能很好地避免分离后的两种液体再次混合，降低了原药的纯度和回收率，为此我们提出了一种用于农药原药生产的萃取离心机
1、该用于农药原药生产的萃取离心机，通过在转鼓内壁设置螺旋导流板，引导液体在转鼓内沿螺旋轨迹流动，优化了液体流动路径，促进液体分层，提升了离心分离效果，驱动系统通过电机、减速机和传动皮带的配合，稳定为转鼓提供高速旋转动力，且可精确调整转速，为高效分离提供动力保障，进料系统通过第一进料管、第二进料管上的第一计量泵和第二计量泵精确控制含农药原药的混合液与萃取剂的进料流量，并通过混合腔使两者充分混合，保证了萃取反应的均匀性，出料系统通过转鼓内靠近中心的轻液收集槽和靠近内壁的重液收集槽，分别收集轻液和重液，并通过轻液出料管、重液出料管上的控制阀根据液体分离状态自动控制出料，有效避免分离后的液体再次混合，从而提高了农药原药的纯度和回收率，各部件协同作用解决了现有设备进料比例控制不精准、分离效率低及出料易混合的问题。
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Figure CN224763295U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pesticide production equipment technology, specifically to an extraction centrifuge for the production of pesticide technical materials. Background Technology
[0002] In the field of pesticide technical production, liquid extraction separation is a key process for extracting active ingredients. As a core piece of equipment, the performance of the extraction centrifuge directly affects the production efficiency and quality of the technical. This equipment accelerates the separation of two immiscible liquid phases through centrifugal force, transferring the pesticide technical from the mixture to the extractant phase, thereby achieving enrichment and purification. With the expansion of pesticide industrial production scale and the improvement of environmental standards, the industry has put forward higher requirements for the separation efficiency, mixing uniformity and automation control level of extraction centrifuges. The equipment needs to have functions such as precise feeding, efficient separation and intelligent discharge to meet the strict requirements for technical recovery rate and purity in large-scale production.
[0003] In the production of pesticide technical materials, extraction centrifuges are crucial equipment for liquid-liquid extraction and separation. However, existing extraction centrifuges have several problems in practical applications. First, the feeding system struggles to precisely control the ratio of the pesticide technical material mixture to the extractant, leading to uneven mixing and affecting the extraction effect. Second, the internal structure of the drum is poorly designed, resulting in poor liquid flow during centrifugation and low separation efficiency, failing to meet the needs of large-scale production. Third, the discharge system cannot effectively prevent the two liquids from mixing again after separation, reducing the purity and recovery rate of the technical material. Therefore, we propose an extraction centrifuge for pesticide technical material production. Utility Model Content
[0004] To address the shortcomings of existing technologies, this invention provides an extraction centrifuge for the production of pesticide technical materials, thus solving the aforementioned problems.
[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: an extraction centrifuge for the production of pesticide technical, comprising a base, a shell, a drum and a drive system, wherein the drum is made of high-strength corrosion-resistant material and a spiral guide plate is provided on the inner wall; The drive system includes a motor, a reducer, and a drive belt. The motor is connected to the reducer via the drive belt, and the reducer's output shaft is connected to the central shaft of the drum. It also includes: The feeding system includes a first feed pipe, a second feed pipe, a first metering pump, a second metering pump, and a mixing chamber. The first feed pipe is used to transport a mixture containing pesticide technical and is equipped with a first metering pump. The second feed pipe is used to transport an extractant and is equipped with a second metering pump. The outlets of both pipes are connected to the mixing chamber. The discharge system includes a light liquid discharge pipe and a heavy liquid discharge pipe. A light liquid collection tank is located near the center of the drum and is connected to the outside of the outer shell through the light liquid discharge pipe. A heavy liquid collection tank is located near the inner wall and is connected to the outside of the outer shell through the heavy liquid discharge pipe. Control valves are installed on both discharge pipes.
[0006] Preferably, the spiral guide plate extends spirally along the inner wall of the drum to guide the liquid to flow along a spiral trajectory inside the drum.
[0007] Preferably, the first and second metering pumps are high-precision metering pumps, and the flow rate is adjusted by the control system. The outlets of the first and second feed pipes extend into the mixing chamber, so that the mixture and the extractant are premixed in the mixing chamber.
[0008] Preferably, the control valve is an electric control valve, which is connected to a sensor signal installed inside the drum, and is used to automatically control the opening and closing of the light liquid discharge pipe and the flow rate of the heavy liquid discharge pipe according to the liquid separation state.
[0009] Compared with the prior art, this utility model provides an extraction centrifuge for the production of pesticide technical, which has the following beneficial effects: 1. This extraction centrifuge for pesticide technical production optimizes the liquid flow path and promotes liquid stratification by setting a spiral guide plate on the inner wall of the drum. This improves the centrifugal separation effect. The drive system provides stable high-speed rotation power to the drum through the cooperation of a motor, reducer, and transmission belt, and the speed can be precisely adjusted to ensure efficient separation. The feeding system precisely controls the feed flow of the mixture containing pesticide technical and the extractant through the first and second metering pumps on the first and second feed pipes. The mixing chamber ensures that the two are fully mixed, guaranteeing the uniformity of the extraction reaction. The discharge system collects light liquid and heavy liquid respectively through the light liquid collection tank near the center of the drum and the heavy liquid collection tank near the inner wall. The control valves on the light liquid discharge pipe and the heavy liquid discharge pipe automatically control the discharge according to the liquid separation status, effectively avoiding remixing of the separated liquids. This improves the purity and recovery rate of pesticide technical. The synergistic effect of the components solves the problems of inaccurate feed ratio control, low separation efficiency, and easy mixing of discharge in existing equipment. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model; Figure 3 This is a schematic diagram of the structure of this utility model.
[0011] In the diagram: 1. Base; 2. Outer shell; 3. Drum; 4. Motor; 5. Reducer; 6. Drive belt; 7. First feed pipe; 8. Second feed pipe; 9. First metering pump; 10. Second metering pump; 11. Mixing chamber; 12. Light liquid discharge pipe; 13. Heavy liquid discharge pipe; 14. Light liquid collection tank; 15. Heavy liquid collection tank; 16. Control valve; 17. Spiral guide plate. Detailed Implementation
[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0013] Please see Figure 1-3 An extraction centrifuge for the production of pesticide technical materials includes a base 1, a shell 2, a drum 3 and a drive system, characterized in that: the drum 3 is made of high-strength corrosion-resistant material and a spiral guide plate 17 is provided on the inner wall; The drive system includes a motor 4, a reducer 5, and a transmission belt 6. The motor 4 is connected to the reducer 5 via the transmission belt 6, and the output shaft of the reducer 5 is connected to the central shaft of the drum 3. It also includes: The feeding system includes a first feed pipe 7, a second feed pipe 8, a first metering pump 9, a second metering pump 10, and a mixing chamber 11. The first feed pipe 7 is used to transport the mixture containing pesticide technical and is equipped with the first metering pump 9. The second feed pipe 8 is used to transport the extractant and is equipped with the second metering pump 10. The outlets of both pipes are connected to the mixing chamber 11 to precisely control the feed flow rate of the mixture and the extractant. The mixture is pre-mixed in the mixing chamber 11 to provide uniformly mixed material for subsequent centrifugal extraction. The discharge system includes a light liquid discharge pipe 12 and a heavy liquid discharge pipe 13. A light liquid collection tank 14 is located near the center of the drum 3 and is connected to the outside of the outer shell 2 through the light liquid discharge pipe 12. A heavy liquid collection tank 15 is located near the inner wall and is connected to the outside of the outer shell 2 through the heavy liquid discharge pipe 13. Control valves 16 are installed on both discharge pipes. The light liquid collection tank 14 and the heavy liquid collection tank 15 in the drum 3 collect the separated light and heavy liquids respectively. Independent discharge is achieved through the light liquid discharge pipe 12, the heavy liquid discharge pipe 13 and the control valves 16 to avoid secondary mixing of the liquids.
[0014] Furthermore, the spiral guide plate 17 extends spirally along the inner wall of the drum 3 to guide the liquid to flow along the spiral trajectory inside the drum 3. Its spiral angle and spacing are designed according to the physical properties of the liquid. Extending spirally along the inner wall of the drum 3, it guides the liquid to flow along the spiral trajectory, optimizes the flow field distribution, promotes liquid stratification, and improves centrifugal separation efficiency.
[0015] Furthermore, the first metering pump 9 and the second metering pump 10 are high-precision metering pumps. The flow rate is adjusted by the control system. The outlets of the first feed pipe 7 and the second feed pipe 8 both extend into the mixing chamber 11, so that the mixture and the extractant are premixed in the mixing chamber 11. With the premixing design in the mixing chamber 11, the mixture and the extractant are accurately mixed in proportion, ensuring the uniformity of the extraction reaction.
[0016] Furthermore, the control valve 16 is an electric control valve, which is connected to the sensor signal installed in the drum 3. It is used to automatically control the opening and closing of the light liquid discharge pipe 12 and the heavy liquid discharge pipe 13 and the flow rate according to the liquid separation state. It is linked with the sensor in the drum 3 and automatically controls the opening and closing of the light liquid discharge pipe 12 and the heavy liquid discharge pipe 13 and the flow rate according to the liquid separation state, so as to realize intelligent dynamic control of the discharge process and improve the purity and recovery rate of the raw material.
[0017] Structural Description: Base 1: Base 1 is the basic support structure of the extraction centrifuge, used to stably support the weight of the whole machine, provide an installation benchmark for components such as the outer shell 2 and the drum 3, and ensure the stability of the equipment during operation; Outer shell 2: Outer shell 2 is the external enclosed structure of the equipment, which is set on the base 1 to protect the internal components such as the rotating drum 3 and the drive system, while providing safety protection and isolating the high-speed components during centrifugal operation; Rotary drum 3: Located inside the outer shell 2, the rotary drum 3 is made of high-strength corrosion-resistant material and has a spiral guide plate 17 on its inner wall. It is the core component of centrifugal separation and achieves liquid-liquid separation by generating centrifugal force through high-speed rotation. Motor 4: Motor 4 is the power source of the drive system. It is connected to the reducer 5 through the transmission belt 6 and provides rotational power to the drum 3. The centrifugal force field strength of the drum 3 can be precisely adjusted by controlling the rotation speed. Reducer 5: Reducer 5 is connected to the central shaft of motor 4 and drum 3, and transmits power through transmission belt 6 to adjust the speed of motor 4 and stably output the speed of drum 3 suitable for centrifugal separation; Transmission belt 6: Transmission belt 6 connects motor 4 and reducer 5, serving as a power transmission medium. It utilizes its elastic properties to buffer starting impact and ensure that the power of the drive system is smoothly transmitted to drum 3. First feed pipe 7: The first feed pipe 7 is used to transport the mixture containing pesticide technical. A first metering pump 9 is installed on it to accurately control the flow rate of the mixture and transport the material to the mixing chamber 11 for premixing. Second feed pipe 8: The second feed pipe 8 is used to transport the extractant. A second metering pump 10 is installed on it to precisely control the flow rate of the extractant and to mix it evenly with the mixture from the first feed pipe 7 in the mixing chamber 11. First metering pump 9: The first metering pump 9 is installed on the first feed pipe 7 and is a high-precision metering device. The flow rate is adjusted by the control system to ensure that the mixed liquid containing pesticide raw materials is delivered to the mixing chamber 11 in a preset ratio. Second metering pump 10: The second metering pump 10 is installed on the second feed pipe 8. It is a high-precision metering device that works in conjunction with the first metering pump 9 to accurately control the flow rate of the extractant and ensure the accuracy of the two-phase material ratio. Mixing chamber 11: The mixing chamber 11 is connected to the outlets of the first and second feed pipes 7 and 8, so that the mixture and extractant are fully premixed in the chamber to form a uniform emulsion before entering the drum 3, thereby improving the extraction reaction efficiency. Light liquid discharge pipe 12: The light liquid discharge pipe 12 is connected to the light liquid collection tank 14 inside the drum 3 and is used to discharge the separated light phase liquid. The control valve 16 on it can automatically control the discharge according to the separation status. Heavy liquid discharge pipe 13: The heavy liquid discharge pipe 13 is connected to the heavy liquid collection tank 15 inside the drum 3 and is used to discharge the separated heavy phase liquid. The control valve 16 on it can intelligently control the discharge to avoid liquid mixing. Light liquid collection tank 14: The light liquid collection tank 14 is located near the center inside the rotating drum 3. It is used to collect the separated light phase liquid and discharge it independently through the light liquid discharge pipe 12 to prevent it from mixing with the heavy phase. Heavy liquid collection tank 15: The heavy liquid collection tank 15 is located inside the drum 3 near the inner wall. It is used to collect the heavy phase liquid after separation and discharge it through the heavy liquid discharge pipe 13 to ensure thorough separation of light and heavy phases. Control valve 16: Control valve 16 is an electric control valve, installed on the light liquid and heavy liquid discharge pipes 12 and 13, and linked with the sensor inside the drum 3 to automatically control the opening and closing of the discharge and the flow rate, thereby improving the separation accuracy. Spiral guide plate 17: The spiral guide plate 17 is set on the inner wall of the drum 3 and extends along the spiral trajectory to guide the liquid to flow along the spiral path during centrifugation, enhance the stratification effect and improve the separation efficiency.
[0018] Working principle: The drive system consists of a motor 4, a reducer 5, and a transmission belt 6. The motor 4 serves as the power source, transmitting rotational power to the reducer 5 via the transmission belt 6. After speed adjustment by the reducer, the output shaft drives the central shaft of the drum 3 to rotate stably. This transmission structure utilizes the elasticity of the belt to buffer the starting impact. Simultaneously, the control system adjusts the motor speed to achieve precise control of the drum 3's rotational speed. The drum 3 is made of high-strength, corrosion-resistant material, with spiral guide plates 17 evenly arranged on its inner wall. The spiral extension structure guides the liquid to flow along a specific trajectory within the drum, providing the basic flow field conditions for the centrifugal separation process. The feeding system includes a first feed pipe 7, a second feed pipe 8, a first metering pump 9, a second metering pump 10, and a mixing chamber 1. 1. A mixture containing pesticide technical is conveyed through a first feed pipe 7. A first metering pump 9 is installed on the pipeline to control the feed flow rate of the mixture. The extractant is conveyed through a second feed pipe 8. A second metering pump 10 controls the feed flow rate of the extractant. The outlets of both pipelines are connected to the mixing chamber 11, and the outlet ends extend into the mixing chamber, so that the mixture and extractant are premixed in the chamber. Through the coordinated regulation of the first metering pump 9 and the second metering pump 10, it can be ensured that the two phases are conveyed to the mixing chamber 11 in a preset ratio. After forming a uniform emulsion, it enters the rotating drum 3, laying the foundation for subsequent centrifugal extraction. When the premixed emulsion enters the high-speed rotating drum 3, under the action of centrifugal force, the denser phase moves towards the inner wall of the drum, while the less dense phase... The liquid gathers towards the center of the drum. The spiral guide plate 17 on the inner wall of the drum guides the liquid to flow axially along the spiral trajectory, prolonging the residence time of the liquid in the drum and suppressing circumferential turbulence, thus enhancing the radial stratification effect. Under the action of the spiral guide plate 17, the liquid moves towards the discharge end along the spiral path while rotating at high speed with the drum, allowing the light and heavy phases to be fully separated. The discharge system consists of a light liquid discharge pipe 12, a heavy liquid discharge pipe 13, a light liquid collection tank 14, a heavy liquid collection tank 15, and a control valve 16. The separated light phase gathers in the central area of the drum, is collected by the light liquid collection tank 14, and is discharged through the light liquid discharge pipe 12. The heavy phase adheres to the inner wall of the drum, is collected by the heavy liquid collection tank 15, and is discharged through the heavy liquid discharge pipe 13. The light liquid discharge pipe 12 and the heavy liquid discharge pipe 13... Each pipe 13 is equipped with a control valve 16, which is an electrically operated valve connected to a sensor signal inside the drum 3. This allows for real-time monitoring of the liquid separation status. Based on the sensor feedback, the control valve 16 automatically controls the opening and closing of the light liquid discharge pipe 12 and the heavy liquid discharge pipe 13, as well as the flow rate, ensuring that the separated light and heavy phases are discharged independently, avoiding secondary mixing. The drive system provides stable power to the drum 3, and the spiral guide plate 17 optimizes the liquid flow path to improve separation efficiency. The feeding system achieves precise material proportioning and premixing through a high-precision metering pump and a mixing chamber 11. The discharge system achieves intelligent discharge of the separated liquid through independent pipelines, a collection tank, and the electrically operated control valve 16. This collaborative design enables the equipment to efficiently complete the extraction and separation process in pesticide technical production.A complete closed-loop process is formed, from power input and material handling to separation control, meeting the requirements of pesticide production for extraction efficiency and product purity.
[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An extraction centrifuge for the production of pesticide technical, comprising a base (1), a shell (2), a rotating drum (3), and a drive system, characterized in that: The drum (3) is made of high-strength corrosion-resistant material and has a spiral guide plate (17) on its inner wall. The drive system includes a motor (4), a reducer (5), and a transmission belt (6). The motor (4) is connected to the reducer (5) via the transmission belt (6), and the output shaft of the reducer (5) is connected to the central shaft of the drum (3). It also includes: The feeding system includes a first feed pipe (7), a second feed pipe (8), a first metering pump (9), a second metering pump (10), and a mixing chamber (11). The first feed pipe (7) is used to transport a mixture containing pesticide technical and is equipped with the first metering pump (9). The second feed pipe (8) is used to transport an extractant and is equipped with the second metering pump (10). The outlets of both pipes are connected to the mixing chamber (11). The discharge system includes a light liquid discharge pipe (12) and a heavy liquid discharge pipe (13). A light liquid collection tank (14) is provided near the center of the drum (3) and is connected to the outside of the outer shell (2) through the light liquid discharge pipe (12). A heavy liquid collection tank (15) is provided near the inner wall and is connected to the outside of the outer shell (2) through the heavy liquid discharge pipe (13). A control valve (16) is provided on both discharge pipes.
2. The extraction centrifuge for pesticide production according to claim 1, characterized in that: The spiral guide plate (17) extends spirally along the inner wall of the drum (3) to guide the liquid to flow along the spiral trajectory inside the drum (3).
3. The extraction centrifuge for pesticide production according to claim 1, characterized in that: The first metering pump (9) and the second metering pump (10) are high-precision metering pumps. The flow rate is adjusted by the control system. The outlets of the first feed pipe (7) and the second feed pipe (8) extend into the mixing chamber (11) so that the mixture and the extractant are premixed in the mixing chamber (11).
4. The extraction centrifuge for pesticide production according to claim 1, characterized in that: The control valve (16) is an electric control valve, which is connected to the sensor signal installed in the drum (3) and is used to automatically control the opening and closing of the light liquid discharge pipe (12) and the heavy liquid discharge pipe (13) and the flow rate according to the liquid separation state.