Multi-layer liquid preparing and sampling device of reaction kettle

Abstract

A multi-layer liquid preparing and sampling device of a reaction kettle comprises a vertically-arranged sampling main pipe, a closed auxiliary cabin is arranged beside the sampling main pipe, the closed auxiliary cabin and the sampling main pipe are arranged side by side, the auxiliary cabin is tightly attached to the outer wall of the sampling main pipe, and a plurality of sampling branch pipes which are arranged at equal intervals in the vertical direction are arranged in the auxiliary cabin; one end of each sampling branch pipe is communicated with the inner cavity of the sampling main pipe, the other end of each sampling branch pipe is communicated with the outside through the outer wall of the auxiliary cabin, and each sampling branch pipe is connected in series with a pneumatic valve for controlling the on-off of the sampling branch pipe; control air pipes of all the pneumatic valves extend upwards through gaps between the sampling branch pipes and the outer wall of the auxiliary cabin, are led out of the closed auxiliary cabin and are connected with an external valve controller. According to the device, the liquid medicine in the reaction kettle can be sampled in a layered manner as required, the liquid medicine at a specified depth can be taken independently, and multi-layer sampling and mixing can be realized, so that various production and detection requirements are met.

Description

Technical Field

[0001] The utility model relates to a multi-layer liquid mixing and sampling device for a reaction kettle. Background Art

[0002] Reactors are widely used in production-oriented applications such as petroleum, chemical, rubber, pesticide, dye, pharmaceutical, and food, as well as in various scientific research projects. The reactor's structure, functions, and accessories are designed based on reaction conditions. From the initial feeding, reaction, and discharge, the pre-set reaction steps can be completed with a high degree of automation, and key parameters such as temperature, pressure, mechanical control, and reactant or product concentrations can be strictly controlled during the reaction.

[0003] In the actual production process, in order to ensure the normal progress of the reaction, it is necessary to regularly sample and test the materials in the reactor. Most of the time, the testing is carried out through a sampling tube installed on the reactor. The structure can be found in Chinese patent CN201410699880.6. The problem with this sampling method is that since the reactor generally has a large volume, the component ratio and reaction conditions of the liquid medicine at different depths may vary greatly. Therefore, sampling at a single depth cannot accurately reflect the current state of the liquid medicine in the entire reactor. To solve this problem, existing operators will also adopt a manual extraction method to perform multiple manual samplings by probing at different depths. Although this can barely meet the requirements of sampling and testing, it is time-consuming and labor-intensive. The sampling depth is estimated entirely by feeling, and multiple samplings lack depth consistency. In addition, this manual sampling method requires opening the lid for sampling, which not only affects the reaction process for some special reactions, but also poses a safety hazard to the operator. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a multi-layer liquid sampling device for a reactor, which can sample the liquid in the reactor in layers as needed. It can either take liquid of a specified depth alone or take multi-layer samples and mix them, thus meeting various production and detection requirements.

[0005] In order to solve the above technical problems, the utility model provides a multi-layer liquid sampling device for a reactor, comprising a vertically arranged sampling main pipe, a closed sub-cabin arranged side by side with the sampling main pipe is provided on the side of the sampling main pipe, the sub-cabin is tightly fitted with the outer wall of the sampling main pipe, and a plurality of sampling branches arranged at equal intervals along the vertical direction are provided in the sub-cabin, one end of each sampling branch pipe is connected to the inner cavity of the sampling main pipe, and the other end is connected to the outside world through the outer wall of the sub-cabin, and each sampling branch pipe is connected in series with a pneumatic valve for controlling the on and off of the sampling branch pipe, and the control air pipes of all pneumatic valves extend upward through the gap between the sampling branch pipe and the outer wall of the sub-cabin to lead out of the closed sub-cabin, and are connected to an external valve controller.

[0006] For the purpose of simple explanation, the multi-layer liquid sampling device for a reactor described in the present invention is referred to as the device below.

[0007] How to use this device: This device is installed vertically in the reactor. The upper side of the sampling main pipe is required to be higher than the height of the liquid in the reactor. The lower side of the sampling main pipe can directly pass through the bottom of the reactor and directly connect to the sampling tank. For reactors without openings at the bottom, the lower end of the sampling pipe can be sealed with a sealing plate. After sampling, the entire device is lifted up out of the reactor, and then the sealing plate is opened to release the liquid sample. The control air pipe of the pneumatic valve is led out from the upper side of the auxiliary compartment and directly connected to the controller outside the reactor, without contact with the liquid in the reactor. When in use, the pneumatic valve is closed by default. According to sampling needs, the pneumatic valve of the corresponding height is opened by the external controller. After the pneumatic valve is opened, the liquid at the corresponding height in the reactor enters the sampling main pipe through the sampling branch pipe. The operator collects it directly at the outlet on the lower side of the sampling pipe (sampling tank). After collecting a sufficient amount of sample, the start valve is closed, and the pneumatic valve at the next height is opened to sample again. Repeat this operation several times to sample the liquid at different depths in the reactor.

[0008] Advantages of this device: This device can sample the liquid medicine in the reactor in layers as needed. It can take liquid medicine at a specified depth alone or take multi-layer samples and mix them, meeting various production and testing requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 Schematic diagram of the structure of the device (only four sampling branches are shown for reference).

[0010] Figure 2 yes Figure 1 AA cross-sectional view.

[0011] Figure 3 This is a schematic diagram of the device in use. DETAILED DESCRIPTION

[0012] See also Figure 1-Figure 3 A multi-layer liquid sampling device for a reactor comprises a vertically arranged sampling main pipe 1, a closed sub-cabin 2 arranged side by side with the sampling main pipe 1, the sub-cabin 2 is tightly fitted with the outer wall of the sampling main pipe 1, and a plurality of sampling branch pipes 3 arranged at equal intervals along the vertical direction are provided in the sub-cabin 2. One end of each sampling branch pipe 3 is connected to the inner cavity of the sampling main pipe 1, and the other end is connected to the outside through the outer wall of the sub-cabin 2. A pneumatic valve 4 for controlling the on and off of the sampling branch pipe 3 is connected in series to each sampling branch pipe 3. The control air pipes of all pneumatic valves 4 extend upward through the gap 21 between the sampling branch pipe 3 and the outer wall of the sub-cabin 2, lead out of the closed sub-cabin 2, and are connected to the external valve 4 controller.

[0013] The method of using this device is as follows: This device is installed vertically in the reactor 5. The upper side of the sampling main pipe 1 is required to be higher than the height of the liquid in the reactor. The lower side of the sampling main pipe 1 can directly pass through the bottom of the reactor 5 and directly connect to the sampling tank. For the reactor 5 without an opening at the bottom, the lower end of the sampling pipe 1 can be sealed with a sealing plate. After sampling, the device is lifted up from the reactor 5 as a whole, and then the sealing plate is opened to release the liquid sample. The control air pipe of the pneumatic valve 4 is led out from the upper side of the auxiliary compartment 2 and directly connected to the controller outside the reactor, without being connected to the inside of the reactor. The pneumatic valve 4 is closed by default when in use. According to the sampling needs, the pneumatic valve 4 of the corresponding height is opened by the external controller. After the pneumatic valve 4 is opened, the drug liquid at the corresponding height in the reactor 5 enters the sampling main pipe 1 through the sampling branch pipe 3. The operator collects the sample directly at the outlet of the lower side of the sampling pipe (sampling slot). After collecting enough samples, the start valve 4 is closed, and the pneumatic valve 4 at the next height is opened to sample again. The operation can be repeated several times to sample the drug liquid at different depths in the reactor 5.

[0014] Advantages of this device: This device can sample the liquid medicine in the reactor 5 in layers as needed. It can either take liquid medicine at a specified depth alone or take multi-layer samples and mix them, meeting various production and testing requirements.

Claims

1. A multi-layer liquid sampling device for a reactor, characterized by: It includes a vertically arranged sampling main pipe, and a closed sub-cabin arranged side by side with the sampling main pipe is provided next to the sampling main pipe. The sub-cabin is tightly fitted with the outer wall of the sampling main pipe. A number of sampling branch pipes are arranged at equal intervals along the vertical direction in the sub-cabin. One end of each sampling branch pipe is connected to the inner cavity of the sampling main pipe, and the other end is connected to the outside world through the outer wall of the sub-cabin. Each sampling branch pipe is serially connected with a pneumatic valve for controlling the on and off of the sampling branch pipe. The control air pipes of all pneumatic valves extend upward through the gap between the sampling branch pipe and the outer wall of the sub-cabin, lead out of the closed sub-cabin, and are connected to an external valve controller.

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