Safe and environment-friendly sampling device for acyl chloride products

Abstract

The utility model discloses a safe and environment-friendly sampling device for acyl chloride products, which comprises an acyl chloride circulating pipeline serving as a main material pipeline and a sampling bypass arranged on the acyl chloride circulating pipeline, and a reducing pipe for throttling is mounted on the acyl chloride circulating pipeline. One end of the sampling bypass is connected with an acyl chloride circulating pipeline arranged on the feeding side of the reducing pipe through a tee joint, the other end of the sampling bypass is connected with an acyl chloride circulating pipeline arranged on the discharging side of the reducing pipe through a tee joint, a feeding valve and a discharging valve are mounted on the sampling bypass, and a sampling valve is mounted on the sampling bypass between the feeding valve and the discharging valve. The reducing pipe is arranged on the main material pipeline, so that the pressure difference of an inlet and an outlet of the bypass is increased, and enough flow of the bypass is ensured; the sampling valve is provided with a self-rebounding valve element, hydrolysis and solidification caused by long-time contact of wall-hung materials at a sampling discharging port and air are avoided, and meanwhile material splashing and leakage caused by accidental touch of a valve rod can be avoided.

Description

Technical Field

[0001] This utility model relates to a sampling device, and more particularly to a safe and environmentally friendly sampling device for acyl chloride products. Background Technology

[0002] Acyl chlorides are important carboxylic acid derivatives and highly reactive compounds, commonly used as acylation reagents in organic synthesis, pharmaceutical manufacturing, and the plastics industry. Acyl chlorides also undergo hydrolysis, reacting with water to produce hydrogen chloride and fatty acids. Acyl chloride products are fine chemical products; during production, sampling and analysis are required to test indicators such as product color, free fatty acids, acid anhydrides, and carbonyl chlorides to ensure the products meet downstream application requirements.

[0003] Traditional sampling methods involve branching off the acyl chloride product pipeline with a valve, followed by a bend in the pipe. During operation, one hand holds the sampling bottle while the other opens the valve. Improper operation or accidental valve opening can cause material splashing, resulting in chemical burns if it gets on the skin. There is a blind pipe section before the sampling valve, and the material adhering to the pipe wall after the valve comes into contact with air and hydrolyzes. To ensure representative sampling, a significant amount of material needs to be drained to replace the sampling pipe before sampling. During the draining process and storage of the drained material, hydrogen chloride is released, which can corrode surrounding equipment. Furthermore, reusing the drained material increases the need for unconventional operations by employees. Utility Model Content

[0004] The technical problem this invention aims to solve is to address the shortcomings of existing technologies by providing a sampling device that is reasonably designed, easy to use, safe, and environmentally friendly. This application primarily addresses the safety and environmental problems caused by the easy splashing and the need to discharge large amounts of material to replace the sampling tube in traditional acyl chloride sampling methods. This problem is solved by adding a bypass to the acyl chloride circulation pipeline, installing a diameter reduction throttling device on the main pipeline, and adding a self-rebounding and closing sampling valve to the bypass.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A safe and environmentally friendly sampling device for acyl chloride products is characterized in that the device includes an acyl chloride circulation pipeline as the main material pipeline and a sampling bypass provided on the acyl chloride circulation pipeline. A throttling reducing pipe is installed on the acyl chloride circulation pipeline. One end of the sampling bypass is connected to the acyl chloride circulation pipeline located on the feed side of the reducing pipe via a tee, and the other end of the sampling bypass is connected to the acyl chloride circulation pipeline located on the discharge side of the reducing pipe via a tee. A feed valve and a discharge valve are installed on the sampling bypass, and a sampling valve is installed on the sampling bypass between the feed valve and the discharge valve.

[0007] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the sampling valve includes a housing and a self-rebound valve core. The housing is provided with an inlet, a sampling port and an outlet, with the inlet and outlet located on both sides of the sampling port. The self-rebound valve core includes a valve core for sealing the sampling port and a valve handle connected to the valve core. The valve handle and the valve core are coaxially arranged. One end of the valve handle is fixedly connected to the center of the valve core, and the other end of the valve handle extends out of the housing and is connected to a handle. A return spring is sleeved on the valve handle to reset the valve core and close the sampling port.

[0008] The technical problem to be solved by this utility model can also be achieved through the following technical solution: a pipe joint is provided on the acyl chloride circulation pipeline to connect with the reduced diameter pipe flange.

[0009] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the feed valve and the discharge valve are ball valves.

[0010] Compared with the prior art, this utility model increases the pressure difference between the inlet and outlet of the bypass by setting a reduced-diameter pipe in the main material pipeline, ensuring sufficient flow in the bypass and fully displacing the bypass pipeline; the inlet and outlet valves are ball valves, which do not affect the bypass flow; the sampling valve is equipped with a self-rebound valve core, and the outlet of the sampling valve is equipped with a threaded interface for installing a sampling bottle, which can seal the sampling bottle and prevent the material adhering to the sampling outlet from being in contact with air for a long time, thus avoiding hydrolysis and solidification. At the same time, it can also prevent material splashing and leakage caused by accidental valve stem contact. Attached Figure Description

[0011] Figure 1 This is a structural diagram of the safe and environmentally friendly sampling device for acyl chloride products described in this utility model.

[0012] In the diagram: 1-acyl chloride circulation pipeline, 2-sampling bypass, 3-inlet valve, 4-sampling valve, 5-outlet valve, 6-reduced diameter pipe. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0014] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0015] Reference Figure 1 A safe and environmentally friendly sampling device for acyl chloride products is disclosed. The device includes an acyl chloride circulation pipeline 1, which serves as the main material pipeline, and a sampling bypass 2 provided on the acyl chloride circulation pipeline 1. A throttling reducer 6 is installed on the acyl chloride circulation pipeline 1. One end of the sampling bypass 2 is connected to the acyl chloride circulation pipeline 1 on the feed side of the reducer 6 via a tee, and the other end of the sampling bypass 2 is connected to the acyl chloride circulation pipeline 1 on the discharge side of the reducer 6 via a tee. A feed valve 3 and a discharge valve 5 are installed on the sampling bypass 2, and a sampling valve 4 is installed on the sampling bypass 2 between the feed valve 3 and the discharge valve 5. A pipe joint is provided on the acyl chloride circulation pipeline 1 that is threaded to the reducer 6. The feed valve 3 and the discharge valve 5 are ball valves.

[0016] The sampling valve includes a housing and a self-rebound valve core. The housing has an inlet, a sampling port, and an outlet, with the inlet and outlet located on either side of the sampling port. The position of the sampling port can be set according to usage requirements. The self-rebound valve core includes a valve core for sealing the sampling port and a valve handle connected to the valve core. The valve handle and valve core are coaxially arranged, with one end of the valve handle fixedly connected to the center of the valve core, and the other end of the valve handle extending out of the housing and connected to a handle. A return spring is fitted on the valve handle to reset the valve core and close the sampling port. Alternatively, the sampling valve can also adopt any manual or electric sampling valve structure disclosed in the present technology or commercially available.

[0017] The working process of the safe and environmentally friendly sampling device for acyl chloride products described in this utility model includes the following steps.

[0018] 1. Open the inlet valve 3 and outlet valve 5 on the sampling bypass to keep the sampling bypass in the normally open state at all times;

[0019] 2. While the material is circulating in the acyl chloride circulation pipeline 1, the sampling bypass 2 is simultaneously replaced;

[0020] 3. Attach the sampling bottle to the sampling port of sampling valve 4, take a sample by pressing the valve handle, and release the valve handle after sampling is completed to end the sampling.

[0021] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A safe and environmentally friendly sampling device for acyl chloride products, characterized in that, The device includes an acyl chloride circulation pipeline as the main material pipeline and a sampling bypass on the acyl chloride circulation pipeline. A throttling reducer is installed on the acyl chloride circulation pipeline. One end of the sampling bypass is connected to the acyl chloride circulation pipeline on the feed side of the reducer via a tee, and the other end of the sampling bypass is connected to the acyl chloride circulation pipeline on the discharge side of the reducer via a tee. A feed valve and a discharge valve are installed on the sampling bypass, and a sampling valve is installed on the sampling bypass between the feed valve and the discharge valve.

2. The safety environmental sampling device for acyl chloride products according to claim 1, characterized in that, The sampling valve includes a housing and a self-rebound valve core. The housing has an inlet, a sampling port, and an outlet, with the inlet and outlet located on either side of the sampling port. The self-rebound valve core includes a valve core for sealing the sampling port and a valve handle connected to the valve core. The valve handle and the valve core are coaxially arranged. One end of the valve handle is fixedly connected to the center of the valve core, and the other end of the valve handle extends out of the housing and is connected to a handle. A return spring is fitted on the valve handle to reset the valve core and close the sampling port.

3. The safety environmental sampling device for acyl chloride products according to claim 1, characterized in that, The acyl chloride circulation pipeline is equipped with a pipe fitting that connects to the reduced-bore pipe flange.

4. The safety environmental sampling device for acyl chloride products according to claim 1, characterized in that, The feed valve and discharge valve are ball valves.

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