A multi-stage condensing vessel for a negative pressure extraction system

Abstract

The utility model discloses a multistage condensing container for negative pressure extraction system, aims at solving the low efficiency of existing condensing equipment, the problem of water vapor easy into vacuum pump leading to equipment damage. The container includes at least three condensing cavities that are connected in series. The first and last condensing cavities are respectively provided with air inlet channels for connecting steam-containing air flow; the middle condensing cavity is provided with an air outlet channel for connecting a vacuum pump. The condensing cavities are connected in series through connecting pipes, and a stainless steel tube bundle arranged by multiple parallel stainless steel tubes is arranged in the condensing cavities to enhance air flow disturbance and increase condensing area. The bottom of each condensing cavity is provided with a conical structure for collecting condensed liquid and discharging the condensed liquid through a unified liquid outlet pipe 7. The utility model prolongs the path and improves the condensing efficiency through multistage condensing and high-efficiency heat exchange, effectively protects the vacuum pump, and is suitable for the last-stage condensing of negative pressure extraction, distillation and other systems.

Description

Technical Field

[0001] This utility model relates to the field of gas condensation and separation technology, and in particular to a multi-stage condensation container for a negative pressure extraction system. Background Technology

[0002] In negative pressure extraction, distillation, or drying processes, the condensation and recovery of water vapor is a critical step. Existing technologies often use single-stage condensers, which have limited condensation efficiency. Especially for the final stage condenser, if the moisture is not fully condensed and collected, residual water vapor will enter the vacuum pump at the end, causing emulsification of the vacuum pump oil, corrosion of components, seriously damaging the equipment's lifespan, and affecting the system's vacuum level.

[0003] Furthermore, traditional shell-and-tube or coil-type condensers have direct internal airflow paths, resulting in insufficient gas-liquid separation and room for improvement in condensation efficiency. Therefore, there is an urgent need for a multi-stage condensation device with high condensation efficiency and effective protection for downstream vacuum equipment. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a multi-stage condensing container with a novel structure, high condensation efficiency, and effective prevention of water vapor from entering the vacuum pump.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A multi-stage condenser for a negative pressure extraction system includes at least three condensing chambers 1 connected in series. The first and last condensing chambers 1 are each provided with an inlet channel 2 for connecting to an external inlet pipe to introduce vapor-containing gas; an outlet channel 3 is located in the middle condensing chamber 1 for connecting to a vacuum pump to draw in dry gas. Adjacent condensing chambers 1 are connected in series via connecting pipes 4, guiding gas to flow sequentially through all chambers.

[0006] Each condenser chamber 1 is equipped with a set of stainless steel tube bundles 5.

[0007] The condensation chamber 1 is designed as a vertical cuboid shape. The stainless steel tube bundle 5 is composed of multiple parallel stainless steel tubes. The two ends of the stainless steel tubes are fixed to the left and right walls of the condensation chamber 1, respectively, forming a huge condensation surface area and playing a role in breaking up the airflow and enhancing the disturbance.

[0008] The bottom of each condensation chamber 1 is designed as a conical structure 6 to facilitate the collection of condensate. The port at the bottom of each cone is connected to a unified outlet pipe 7 to discharge the condensate to an external collection container.

[0009] One end of the connecting pipe 4 is connected to the lower part of the condensing chamber 1, and the other end is connected to the upper part of the adjacent condensing chamber 1.

[0010] An openable sealing cover 8 is provided on the top of the condensation chamber 1 for easy internal cleaning and maintenance.

[0011] The beneficial effects of this utility model are as follows: By setting at least three condensing chambers 1 connected in series, the gas condensation path is extended, and the condensation time is increased; by setting a stainless steel tube bundle 5 in each condensing chamber 1, the heat exchange area is increased, and the airflow is disturbed by the tube bundle, thus improving the condensation efficiency; by setting the bottom of the condensing chamber as a conical structure (6) and connecting it to a unified liquid outlet pipe 7, efficient collection and discharge of condensate are achieved. Through the flow path design of inlet and outlet gas and extraction in the middle, combined with multi-stage condensation, the water vapor content in the outflowing gas is effectively reduced, thereby protecting the downstream vacuum pump. As an independent modular device, it can be flexibly integrated into the existing negative pressure system. It can work simply by placing it in an external cooling environment, which can greatly reduce water vapor entering the vacuum pump, effectively protect the downstream equipment, and make the system operation more stable and reliable. In this application, the more condensing chambers 1 connected in series, the better the condensation effect. The number can be set according to the specific implementation requirements. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model; Figure 2 This is a side cross-sectional view of an embodiment of the present invention.

[0013] In the diagram: 1-Condensation chamber; 2-Inlet channel; 3-Outlet channel; 4-Connecting pipe; 5-Stainless steel tube bundle; 6-Conical structure; 7-Liquid outlet pipe; 8-Sealing cap; 9-Fixing bracket. Detailed Implementation

[0014] The preferred embodiments of the present invention will now be described with reference to the accompanying drawings, but the scope of protection of the present invention is not limited thereto.

[0015] like Figure 1 , Figure 2 As shown, the multi-stage condenser container of this embodiment has five condensing chambers 1, which are welded from stainless steel plates into a rectangular shape and connected in series via connecting pipes 4, with one end lower than the other. The upper front wall of the first and fifth condensing chambers 1 each has an inlet channel 2 for receiving steam gas from upstream equipment (such as a drying container). The lower front wall of the middle condensing chamber 1 has an outlet channel 3 for connecting a vacuum pump.

[0016] Each condenser chamber 1 is equipped with a set of stainless steel tube bundles 5. The stainless steel tube bundles 5 are composed of multiple stainless steel tubes of the same specification. These stainless steel tubes are parallel to the long side of the condenser chamber 1 and perpendicular to the height direction, and their two ends are welded and fixed to the left and right wall panels of the condenser chamber 1.

[0017] The bottom of each condensation chamber 1 is welded into a conical structure 6, and the outlets of the five conical bottoms are connected to a unified liquid outlet pipe 7 through branch pipelines to lead the condensate to an external collection tank.

[0018] The condensation chamber 1 is equipped with a sealing cover 8, which is fixed by screws.

[0019] In application, the entire container is secured with a mounting bracket 9 and placed in a customized refrigeration environment (such as a low-temperature refrigerator or cold storage). During system operation, the vapor enters the first and last condensing chambers 1 from the inlet channels 2 at both ends. Under the suction of the vacuum pump, the vapor flows towards the middle condensing chamber 1. During the flow, the gas continuously collides with, cools, and condenses against the low-temperature stainless steel tube bundle 5, forming condensate. After being thoroughly condensed and dried through multiple stages, the gas is finally extracted by the vacuum pump from the outlet channel 3, greatly reducing the water vapor content and protecting the vacuum pump.

[0020] It should be noted that in this application, the more condensing chambers 1 there are, the better the condensation effect. The specific number of chambers and the arrangement of the stainless steel tube bundles 5 can be adapted and adjusted according to actual process requirements and installation space. Any simple modifications or substitutions to the above elements based on the core concept of this application fall within the protection scope of this application.

Claims

1. A multi-stage condenser for a negative pressure extraction system, characterized in that: It includes at least three condensation chambers connected in series (1); The first condensing chamber (1) and the last condensing chamber (1) are respectively provided with an air inlet channel (2), and the middle condensing chamber (1) is provided with an air outlet channel (3); The adjacent condensation chambers (1) are connected in series by a connecting pipe (4); Each of the condensation chambers (1) is provided with a set of stainless steel tube bundles (5).

2. A multi-stage condenser for a negative pressure extraction system according to claim 1, characterized in that: The condensation chamber (1) is configured as a vertical cuboid shape.

3. A multi-stage condenser for a negative pressure extraction system according to claim 2, characterized in that: The stainless steel tube bundle (5) is composed of multiple parallel stainless steel tubes arranged in a row, with the two ends of the stainless steel tubes fixed to the left and right walls of the condensation chamber (1), respectively.

4. A multi-stage condenser for a negative pressure extraction system according to claim 1, characterized in that: The bottom of each of the condensation chambers (1) is a conical structure (6), and its conical bottom port is connected to the liquid outlet pipe (7).

5. A multi-stage condenser for a negative pressure extraction system according to claim 1, characterized in that: One end of the connecting pipe (4) is connected to the lower part of a condensing chamber (1), and the other end is connected to the upper part of an adjacent condensing chamber (1).

6. A multi-stage condenser for a negative pressure extraction system according to claim 1 or 2, characterized in that: The top of the condensation chamber (1) is provided with an openable sealing cover (8).

7. A multi-stage condenser for a negative pressure extraction system according to claim 1, characterized in that: The condensation chamber (1) is configured to have five chambers.

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