A fluorination reaction sealed sampling device

Abstract

The utility model discloses a kind of fluorination reaction sealing sampling devices, it is related to sampling device technical field.The utility model includes sampling assembly, the bottom of sampling assembly is movably connected with sealing assembly, and sampling assembly includes sampling cylinder, and the top of sampling cylinder is fixedly connected with suction pump.The utility model is through multiple sealing structure design, comprehensively promotes the safety of fluorination reaction sampling process, first, the sealing ring one of sealing cover inner cavity top is closely combined with the top of reaction kettle sampling port, forms first sealing barrier, effectively prevents medium from seeping from connecting part, and the sealing ring two of sealing cover inner wall is embedded in groove, and interference fit is realized with reaction kettle sampling port, enhances lateral sealing effect, prevent gas or liquid from leaking along contact surface, and the sealing ring three of bottom further insulates external environment, avoid sealing failure caused by vibration or pressure fluctuation in sampling operation process.

Description

Technical Field

[0001] This utility model belongs to the field of sampling device technology, and in particular relates to a fluorination reaction sealed sampling device. Background Technology

[0002] Fluorination is an important chemical reaction in chemical production processes, widely used in the synthesis of fluorinated fine chemicals, pharmaceutical intermediates, pesticides, and polymer materials. Because fluorides are typically highly corrosive, toxic, or flammable and explosive, extremely high safety requirements are placed on sampling operations during the reaction process. As a key component interacting with the external environment, the sampling device's sealing performance and sampling accuracy directly affect production safety, product quality, and the health of operators.

[0003] Currently, traditional fluorination reaction sampling devices have several shortcomings in practical applications. On the one hand, flawed sealing design leads to a high risk of leakage. On the other hand, the lack of quantitative sampling functions or insufficient accuracy affects production control. Traditional sampling devices often rely on operators to manually control the sampling volume, making them highly susceptible to human factors and difficult to achieve accurate quantitative sampling. For fluorination reactions that require strict control of reactant ratios or precise component analysis, this can easily lead to unstable reaction processes or biased analytical results.

[0004] To address these issues, we provide a sealed sampling device for fluorination reactions. Utility Model Content

[0005] The purpose of this invention is to provide a fluorination reaction sealed sampling device. By combining the sampling component and the sealing component, it solves the problems in the prior art where the sampling device has a high risk of leakage due to the defective sealing structure design, and the lack of quantitative sampling function or insufficient accuracy affects production control.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to a fluorination reaction sealed sampling device, comprising a sampling assembly, a sealing assembly movably connected to the bottom of the sampling assembly, a sampling cylinder, a suction pump fixedly connected to the top of the sampling cylinder, an adsorption tube of the suction pump penetrating into the inner cavity of the sampling cylinder, a one-way valve connected to the bottom of the sampling cylinder, a battery fixedly connected to the top of one side of the sampling cylinder, a controller fixedly connected to the surface of the battery, a drive motor fixedly connected to one side of the top of the sampling cylinder, the output shaft of the drive motor penetrating into the inner cavity of the sampling cylinder and fixedly connected to a lead screw, a mounting plate threadedly connected to the surface of the lead screw, a liquid level sensor fixedly connected to the bottom side of the mounting plate, and a sealing assembly comprising a sealing cap, a flexible tube fixedly connected to the inner cavity of the sealing cap, the top of the flexible tube threadedly connected to the bottom of the one-way valve, an adsorption head fixedly connected to the bottom of the flexible tube, a sealing ring one provided at the top of the inner cavity of the sealing cap, and sealing rings two and three respectively provided on the inner wall and bottom of the sealing cap.

[0008] The present invention is further configured such that a liquid level window is fixedly connected to the surface of the sampling tube, and the surface of the liquid level window is etched with scale lines. By setting a liquid level window and scale lines on the surface of the sampling tube, an intuitive way for operators to observe the liquid level is provided, which is convenient for real-time monitoring in automatic control mode. At the same time, it can be used as a reference in case of manual operation or automatic system failure, thereby improving the reliability and controllability of the sampling process.

[0009] The present invention is further configured such that a discharge pipe is connected to the bottom of one side of the sampling tube, and a valve is fixedly connected to the inner cavity of the discharge pipe. The discharge pipe facilitates the discharge of the sampled liquid for analysis or processing, and the valve control ensures that the discharge process is operable and prevents accidental leakage of the medium, thereby improving the practicality and safety of the device.

[0010] The present invention is further configured such that a mounting hole is provided on one side of the top of the sampling cylinder, and a shaft seal is fixedly connected to the inner cavity of the mounting hole. The output shaft of the drive motor is fixedly connected to the inner wall of the shaft seal. The shaft seal effectively prevents the leakage of the medium at the connection between the output shaft of the drive motor and the sampling cylinder, while ensuring the smooth rotation of the motor output shaft, extending the service life of the device and reducing maintenance costs.

[0011] The present invention is further configured such that the bottom of the lead screw is fixedly connected to the inner wall of the sampling cylinder through a bearing, and the inner cavity of the mounting plate is provided with a threaded hole for use with the lead screw. The bottom of the lead screw is fixed by the bearing and the threaded hole on the mounting plate cooperates to ensure the stability and accuracy of the lead screw transmission, so that the mounting plate can move up and down accurately with the rotation of the lead screw, thereby improving the positioning accuracy of the liquid level sensor.

[0012] The present invention is further configured such that a limiting groove is provided on both the front and back of the lead screw, and a limiting block is slidably connected to the inner cavity of the limiting groove. The other side of the limiting block is fixedly connected to the top of the mounting plate. The design of the limiting groove and the limiting block restricts the movement trajectory of the mounting plate, preventing it from deviating or shaking during the rotation of the lead screw, thus ensuring the stability and reliability of the liquid level sensor measurement and further improving the accuracy of quantitative sampling.

[0013] The present invention is further configured such that the inner wall of the sealing cover is provided with a groove, and the second sealing ring is fitted into the inner wall of the groove. The groove provides the second sealing ring with precise positioning and a stable installation position, ensuring that the second sealing ring will not shift or fall off during use, thereby enhancing the sealing effect and improving the overall sealing performance of the device.

[0014] The present invention is further configured such that a round tube is fixedly connected to the axial center of the sealing cover, and the hose is bonded to the inner wall of the round tube by an adhesive. The round tube provides reliable support and connection base for the hose, and the use of adhesive ensures that the hose is firmly bonded to the inner wall of the round tube, preventing the medium from leaking at the connection point and ensuring the sealing and reliability of the medium transmission path.

[0015] The present invention has the following beneficial effects.

[0016] 1. This utility model comprehensively improves the safety of the fluorination reaction sampling process through a multi-seal structure design. First, the sealing ring one at the top of the inner cavity of the sealing cap fits tightly with the top of the sampling port of the reactor, forming the first sealing barrier, effectively preventing the medium from leaking out from the connection point. The sealing ring two on the inner wall of the sealing cap is embedded in the groove, achieving an interference fit with the sampling port of the reactor, enhancing the lateral sealing effect and preventing gas or liquid from leaking along the contact surface. The sealing ring three at the bottom further isolates the external environment, avoiding sealing failure caused by vibration or pressure fluctuations during the sampling operation. This triple sealing design is not only suitable for conventional fluorination reactions, but also maintains stable sealing performance under extreme conditions such as high temperature and high pressure, significantly reducing the risk of leakage of toxic and harmful substances, ensuring the safety of operators and meeting the environmental protection requirements of the production environment. In addition, the threaded connection and bonding process of the hose, check valve, and adsorption head ensures the sealing of the medium transmission path, further improving the reliability of the overall device.

[0017] 2. This utility model achieves precise control of the sampling volume through the coordinated operation of a liquid level sensor and a drive motor. The liquid level sensor moves up and down along the lead screw with the mounting plate, monitoring the liquid level in the sampling cylinder in real time. When the preset sampling volume is reached, the controller immediately issues a command to stop the suction pump, ensuring the accuracy of the sampling volume. The lead screw transmission structure provides stable linear motion, and the guiding effect of the limiting groove and limiting block ensures the smoothness and positional accuracy of the mounting plate movement, avoiding measurement errors caused by mechanical shaking. At the same time, the liquid level window and scale lines on the surface of the sampling cylinder provide operators with intuitive visual references, facilitating manual intervention when abnormalities occur in the automatic control mode. This dual-protection quantitative sampling mechanism effectively eliminates the influence of human factors on the sampling volume, providing strong support for the precise control of the fluorination reaction process and the stability of product quality. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 This is a perspective view of a sealed sampling device for fluorination reactions.

[0020] Figure 2 This is a bottom view schematic diagram of a sealed sampling device for fluorination reactions.

[0021] Figure 3 This is a cross-sectional schematic diagram of a sealed sampling device for fluorination reactions.

[0022] Figure 4 This is a schematic diagram of the connection structure between the sampling cylinder and the suction pump in a sealed sampling device for fluorination reactions.

[0023] Figure 5 This is a schematic diagram of the connection structure between the lead screw and the mounting plate in a fluorination reaction sealed sampling device.

[0024] In the attached diagram: 1. Sampling assembly; 11. Sampling cylinder; 12. Suction pump; 13. One-way valve; 14. Battery; 15. Controller; 16. Drive motor; 17. Lead screw; 18. Mounting plate; 19. Liquid level sensor; 110. Liquid level window; 111. Discharge pipe; 112. Limiting groove; 113. Limiting block; 2. Sealing assembly; 21. Sealing cover; 22. Hose; 23. Adsorption head; 24. Sealing ring one; 25. Sealing ring two; 26. Sealing ring three. Detailed Implementation

[0025] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1

[0027] Please see Figure 1-5 This utility model relates to a sealed sampling device for fluorination reactions, comprising a sampling component 1, a sealing component 2 movably connected to the bottom of the sampling component 1, a sampling cylinder 11, a suction pump 12 fixedly connected to the top of the sampling cylinder 11, an adsorption tube of the suction pump 12 penetrating into the inner cavity of the sampling cylinder 11, a one-way valve 13 connected to the bottom of the sampling cylinder 11, a battery 14 fixedly connected to the top of one side of the sampling cylinder 11, a controller 15 fixedly connected to the surface of the battery 14, and a drive motor 16 fixedly connected to one side of the top of the sampling cylinder 11. The output shaft passes through the inner cavity of the sampling cylinder 11 and is fixedly connected to a lead screw 17. The surface of the lead screw 17 is threadedly connected to a mounting plate 18. A liquid level sensor 19 is fixedly connected to one side of the bottom of the mounting plate 18. The sealing assembly 2 includes a sealing cover 21. A hose 22 is fixedly connected to the inner cavity of the sealing cover 21. The top of the hose 22 is threadedly connected to the bottom of the one-way valve 13. An adsorption head 23 is fixedly connected to the bottom of the hose 22. A sealing ring 1 24 is provided at the top of the inner cavity of the sealing cover 21. A sealing ring 25 and a sealing ring 3 26 are respectively provided on the inner wall and bottom of the sealing cover 21.

[0028] Specifically: the sampling cylinder 11 is a cylindrical hollow structure made of tempered glass. A suction pump 12 is fixedly connected to the top of the sampling cylinder 11 with adhesive. The suction pump 12 is a magnetically driven centrifugal pump, and its suction tube extends to the bottom of the inner cavity of the sampling cylinder 11, ensuring that all liquid inside the cylinder can be extracted. A one-way valve 13 is connected to the bottom of the sampling cylinder 11. This one-way valve 13 uses a polytetrafluoroethylene sealing surface, which has good corrosion resistance and sealing performance, allowing the medium to flow into the sampling cylinder 11 only from the bottom and preventing backflow. The battery 14 is a rechargeable lithium battery pack, providing a stable power supply to the device. A controller 15 is fixedly connected to the surface of the battery 14 with clips. The controller 15 has a built-in microprocessor and signal processing circuit, used to receive signals from the liquid level sensor 19 and control... The operation of the suction pump 12 and the drive motor 16 is controlled. The drive motor 16 is a stepper motor, and its output shaft passes through the inner cavity of the sampling cylinder 11 and is fixedly connected to the lead screw 17 through a coupling. The lead screw 17 has a trapezoidal thread structure and its surface is hardened to improve wear resistance. The surface of the lead screw 17 is threadedly connected to the mounting plate 18. The mounting plate 18 is a rectangular flat plate structure made of lightweight aluminum alloy. A liquid level sensor 19 is fixedly connected to one side of its bottom by threads. The liquid level sensor 19 is a capacitive liquid level gauge that can accurately measure the liquid height. The sealing ring 14 is made of perfluoroether rubber, which has the characteristics of high temperature resistance and strong corrosion resistance. The sealing ring 25 is an O-type structure and the sealing ring 3 is a lip structure. Both are made of fluororubber material, which can effectively prevent media leakage.

[0029] Example 2

[0030] Please see Figure 1-5 Based on Embodiment 1, a liquid level window 110 is fixedly connected to the surface of the sampling cylinder 11, and scale lines are etched on the surface of the liquid level window 110. A discharge pipe 111 is connected to the bottom of one side of the sampling cylinder 11, and a valve is fixedly connected to the inner cavity of the discharge pipe 111. A mounting hole is opened on one side of the top of the sampling cylinder 11, and a shaft seal is fixedly connected to the inner cavity of the mounting hole. The output shaft of the drive motor 16 is fixedly connected to the inner wall of the shaft seal, and the bottom of the lead screw 17 is fixedly connected to the inner wall of the sampling cylinder 11 through a bearing. The mounting plate 18 has a threaded hole in its inner cavity that is used to engage with the lead screw 17. The lead screw 17 has a limit groove 112 on both its front and back sides. The inner cavity of the limit groove 112 is slidably connected to a limit block 113. The other side of the limit block 113 is fixedly connected to the top of the mounting plate 18. The inner wall of the sealing cover 21 has a groove. The sealing ring 25 is fitted into the inner wall of the groove. A round tube is fixedly connected to the center of the sealing cover 21. The flexible hose 22 is bonded to the inner wall of the round tube with an adhesive.

[0031] Specifically: By setting a liquid level window 110 and scale lines on the surface of the sampling cylinder 11, an intuitive way for operators to observe the liquid level is provided, facilitating real-time monitoring in automatic control mode. It also serves as a reference in case of manual operation or automatic system failure, improving the reliability and controllability of the sampling process. The discharge pipe 111 facilitates the discharge of the sampled liquid for analysis or processing. Valve control ensures the operability of the discharge process and prevents accidental media leakage, improving the practicality and safety of the device. The shaft seal effectively prevents media leakage at the connection between the output shaft of the drive motor 16 and the sampling cylinder 11, while ensuring smooth rotation of the motor output shaft, extending the service life of the device and reducing maintenance costs. The lead screw 17... The bearing fixing and the threaded hole on the mounting plate 18 ensure the stability and accuracy of the lead screw 17 transmission, allowing the mounting plate 18 to move up and down precisely with the rotation of the lead screw 17, thus improving the positioning accuracy of the liquid level sensor 19. The design of the limiting groove 112 and the limiting block 113 restricts the movement trajectory of the mounting plate 18, preventing it from shifting or shaking during the rotation of the lead screw 17, ensuring the stability and reliability of the liquid level sensor 19 measurement, and further improving the accuracy of quantitative sampling. The circular tube provides a reliable support and connection base for the hose 22, and the use of adhesive ensures that the hose 22 is firmly bonded to the inner wall of the circular tube, preventing media leakage at the connection and ensuring the sealing and reliability of the media transmission path.

[0032] The working principle of this utility model is as follows: First, the sealing cap 21 is installed on the sampling port of the reaction vessel. Through the synergistic action of sealing ring 1 24, sealing ring 25, and sealing ring 3 26, a triple sealing barrier is formed to ensure no media leakage during the sampling process. The suction pump 12 is started, and the liquid in the reaction vessel enters the hose 22 through the adsorption head 23, and then flows into the sampling cylinder 11 through the one-way valve 13. At the same time, the drive motor 16 drives the lead screw 17 to rotate, causing the liquid level sensor 19 on the mounting plate 18 to move downward with the rotation of the lead screw 17. When the liquid level... When sensor 19 detects that the liquid level in sampling cylinder 11 has reached the preset height, controller 15 receives the signal and immediately stops pump 12, thereby achieving accurate quantitative sampling. Operators can visually observe the sample volume through liquid level window 110 and scale lines. If necessary, the sampled liquid can be discharged through discharge pipe 111 and valve for analysis. Throughout the sampling process, the stability of lead screw 17 transmission and the guiding effect of limit structure ensure the accurate movement of liquid level sensor 19, while the multiple sealing structure ensures the safety and reliability of the sampling process.

[0033] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A fluorination reaction sealed sampling device, comprising a sampling component (1), characterized in that: The bottom of the sampling component (1) is movably connected to a sealing component (2); The sampling assembly (1) includes a sampling cylinder (11), a suction pump (12) is fixedly connected to the top of the sampling cylinder (11), the suction tube of the suction pump (12) extends into the inner cavity of the sampling cylinder (11), a one-way valve (13) is connected to the bottom of the sampling cylinder (11), a storage battery (14) is fixedly connected to the top of one side of the sampling cylinder (11), a controller (15) is fixedly connected to the surface of the storage battery (14), a drive motor (16) is fixedly connected to one side of the top of the sampling cylinder (11), the output shaft of the drive motor (16) extends into the inner cavity of the sampling cylinder (11) and is fixedly connected to a lead screw (17), a mounting plate (18) is threaded onto the surface of the lead screw (17), and a liquid level sensor (19) is fixedly connected to one side of the bottom of the mounting plate (18). The sealing assembly (2) includes a sealing cap (21), a hose (22) is fixedly connected to the inner cavity of the sealing cap (21), the top of the hose (22) is threadedly connected to the bottom of the one-way valve (13), an adsorption head (23) is fixedly connected to the bottom of the hose (22), a sealing ring one (24) is provided at the top of the inner cavity of the sealing cap (21), and a sealing ring two (25) and a sealing ring three (26) are respectively provided on the inner wall and bottom of the sealing cap (21).

2. The fluorination reaction sealed sampling device according to claim 1, characterized in that: The sampling tube (11) is fixedly connected to a liquid level window (110), and the surface of the liquid level window (110) is etched with scale lines.

3. The fluorination reaction sealed sampling device according to claim 1, characterized in that: The bottom of one side of the sampling tube (11) is connected to a discharge pipe (111), and a valve is fixedly connected to the inner cavity of the discharge pipe (111).

4. The fluorination reaction sealed sampling device according to claim 1, characterized in that: The sampling tube (11) has an installation hole on one side of its top. A shaft seal is fixedly connected to the inner cavity of the installation hole. The output shaft of the drive motor (16) is fixedly connected to the inner wall of the shaft seal.

5. The fluorination reaction sealed sampling device according to claim 1, characterized in that: The bottom of the lead screw (17) is fixedly connected to the inner wall of the sampling cylinder (11) through a bearing, and the inner cavity of the mounting plate (18) is provided with a threaded hole for use with the lead screw (17).

6. The fluorination reaction sealed sampling device according to claim 1, characterized in that: The lead screw (17) has a limiting groove (112) on both the front and back sides. The inner cavity of the limiting groove (112) is slidably connected to a limiting block (113). The other side of the limiting block (113) is fixedly connected to the top of the mounting plate (18).

7. The fluorination reaction sealed sampling device according to claim 1, characterized in that: The inner wall of the sealing cap (21) is provided with a groove, and the second sealing ring (25) is fitted into the inner wall of the groove.

8. The fluorination reaction sealed sampling device according to claim 1, characterized in that: A round tube is fixedly connected to the axial center of the sealing cap (21), and the flexible tube (22) is bonded to the inner wall of the round tube by an adhesive.

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