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 invention relates to a multi-layer liquid preparation and sampling device for a reaction kettle. Background Art

[0002] Reactors are widely used in production users such as petroleum, chemical, rubber, pesticide, dye, medicine, food and various scientific research projects. The design of the reactor structure, function and accessories is based on the reaction conditions. From the initial feeding-reaction-discharging, the pre-set reaction steps can be completed with a high degree of automation, and important parameters such as temperature, pressure, mechanical control, reactant or product concentration in the reaction process can be strictly regulated.

[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, and most of them are tested 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 be very different, so the 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 use manual extraction to perform multiple manual sampling by probing at different depths. Although this can barely meet the requirements of sampling and testing, it is time-consuming and laborious, and the sampling depth is estimated entirely by feeling. Multiple sampling lacks depth consistency. In addition, this manual sampling method requires opening the cover for sampling, which not only affects the reaction process for some special reactions, but also poses a safety hazard to the operator. Summary of the invention

[0004] The technical problem to be solved by the present invention 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 sample the liquid of a specified depth alone or mix the samples in multiple layers to meet various production and detection requirements.

[0005] In order to solve the above technical problems, the present invention 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 branch pipes 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 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-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 preparation and sampling device for a reactor described in the present invention is referred to as the device below.

[0007] The method of using the device is as follows: the device is installed vertically in the reactor. The height of the upper side of the sampling main pipe is required to be higher than the height of the liquid medicine 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 slot. For the reactor without an opening at the bottom of the reactor, the lower end of the sampling pipe can be closed with a sealing plate. After sampling, the device is lifted upward from the reactor as a whole, and then the sealing plate is opened to release the liquid medicine sample. The control air pipe of the pneumatic valve is directly connected to the controller outside the reactor after being led out from the upper side of the auxiliary cabin, and does not contact the liquid medicine in the reactor. The pneumatic valve is closed by default when in use. According to the sampling needs, the pneumatic valve of the corresponding height is opened by the external controller. After the pneumatic valve is opened, the liquid medicine at the corresponding height in the reactor enters the sampling main pipe through the sampling branch pipe. The operator directly collects it at the outlet on the lower side of the sampling pipe (sampling slot). After collecting enough samples, the start valve is closed, and the pneumatic valve at the next height is opened to sample again. Repeat the operation several times to sample the liquid medicine 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 either sample the liquid medicine at a specified depth individually or sample and mix multiple layers to meet 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 illustration).

[0010] Figure 2 yes Figure 1 AA section 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 is arranged beside the sampling main pipe 1, the sub-cabin 2 is tightly fitted with the outer wall of the sampling main pipe 1, a plurality of sampling branch pipes 3 arranged at equal intervals along the vertical direction are arranged in the sub-cabin 2, one end of each sampling branch pipe 3 is connected with the inner cavity of the sampling main pipe 1, and the other end is connected with the outside through the outer wall of the sub-cabin 2, each sampling branch pipe 3 is serially connected with a pneumatic valve 4 for controlling the on-off of the sampling branch pipe 3, and the control air pipes of all the pneumatic valves 4 extend upward through the gap 21 between the sampling branch pipe 3 and the outer wall of the sub-cabin 2 to lead out of the closed sub-cabin 2, and are connected to the external valve 4 controller.

[0013] The method of using the device is as follows: the device is installed vertically in the reactor 5. The height of the upper side of the sampling main pipe 1 is required to be higher than the height of the liquid medicine 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 of the reactor, the lower end of the sampling pipe 1 can be sealed with a sealing plate. After sampling, the device is lifted upward from the reactor 5 as a whole, and then the sealing plate is opened to release the liquid medicine 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, and is not 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 medicine at the corresponding height in the reactor 5 enters the sampling main pipe 1 through the sampling branch pipe 3. The operator directly collects it at the outlet of the lower side of the sampling pipe (sampling slot). After collecting enough samples, the start valve 4 is closed, and then the pneumatic valve 4 of the next height is opened to sample again. The operation can be repeated several times to sample the medicine 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 sample the liquid medicine at a specified depth alone or sample and mix multiple layers to meet various production and testing requirements.

Claims

1. A multi-layer liquid sampling device for a reactor, characterized in that: The utility model comprises a vertically arranged sampling main pipe, a closed sub-cabin arranged side by side with the sampling main pipe is arranged beside the sampling main pipe, the sub-cabin is tightly fitted with the outer wall of the sampling main pipe, a plurality of sampling branch pipes arranged at equal intervals along the vertical direction are arranged in the sub-cabin, one end of each sampling branch pipe is connected with the inner cavity of the sampling main pipe, and the other end is connected with the outside through the outer wall of the sub-cabin, each sampling branch pipe is serially connected with a pneumatic valve for controlling the on-off of the sampling branch pipe, and the control air pipes of all the 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 with an external valve controller.

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