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 for solving the problem of incomplete water vapor condensation and easy damage of vacuum pump. The container comprises a main container body, which is divided into at least three adjacent condensing cavities by at least two groups of partitions. The gas enters the first condensing cavity through the gas inlet arranged at one end of the container, and flows in the S-shaped path through the U-shaped communication pipe between the condensing cavities, and is finally discharged from the opposite end gas outlet at the one end of the container. At least three groups of stainless steel tube bundles formed by regularly arranging a plurality of stainless steel tubes are arranged in each condensing cavity. These tube bundles can effectively disperse the airflow, increase the condensing surface area, and greatly improve the condensing efficiency. The utility model is suitable for being used as the last stage condensing device of the negative pressure extraction system, can effectively prevent the moisture from entering the vacuum pump, and protects the rear-end equipment.

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 a main container body 1.

[0006] The interior of the main container 1 is divided into at least three sequentially adjacent condensing chambers 3 by at least two sets of partitions 2. One end of the main container 1 has an air inlet 4 communicating with the first condensing chamber, and the opposite end has an air outlet 5 communicating with the last condensing chamber. The ends and beginnings of two adjacent condensing chambers 3 are connected by a U-shaped connecting pipe 6. Each condensing chamber 3 contains a condensing tube assembly with identical structure, and each condensing tube assembly includes at least three sets of stainless steel tube bundles 7 arranged in the same direction. Water vapor enters the first condensing chamber 3 through the air inlet 6, flows through the U-shaped connecting pipe 6 between the condensing chambers 3 in an S-shaped path, and finally exits from the air outlet 5, extending the gas residence time. The stainless steel tube bundles 7 in each condensing chamber 3 act as condensation cores and airflow dispersers, greatly increasing the contact area and collision probability between water vapor and the low-temperature tube wall, promoting rapid condensation of the water vapor.

[0007] Preferably, the main container 1 is a horizontal cuboid shape, and the partition 2 is arranged along the long side of the main container 1 and perpendicular to the bottom surface.

[0008] Preferably, there are two sets of partitions 2, which divide the main container 1 into three condensation chambers 3 of equal volume.

[0009] Preferably, each of the condenser tube bundles includes three sets of stainless steel tube bundles 7 arranged at equal distances in three positions (left, center, and right) along the long side of the main container body 1.

[0010] Preferably, each group of stainless steel tube bundles 7 is formed by a regular arrangement of multiple stainless steel tubes parallel to the short side of the main container body 1, with the two ends of the stainless steel tubes being independently fixed to the front and rear side walls of the condensation chamber respectively.

[0011] The bottom surface of the main container 1 is provided with a liquid outlet pipe 8 for exporting the condensed liquid inside the container.

[0012] The main container body 1 is provided with an openable container cover 9 on the top. The container cover 9 is provided with one or more transparent observation windows 10 and one or more handles 11 to facilitate observation of the container interior and cleaning and maintenance.

[0013] The beneficial effects of this invention are as follows: By setting multiple independent condensation chambers in the main container and combining them with U-shaped connecting pipes to guide water vapor to form an S-shaped flow path, the water vapor collides and disperses sequentially in multiple sets of stainless steel tube bundles when entering the condensation chamber, greatly enhancing airflow disturbance and heat exchange efficiency, and significantly improving the condensation effect. At the same time, as the final condensation defense line, this container can significantly improve the capture efficiency of residual water vapor, effectively preventing it from entering the vacuum pump, thereby extending the pump's service life and ensuring stable system operation. In addition, as an independent container module, this invention can be easily integrated into existing or new negative pressure extraction and distillation systems. It can work normally simply by placing it in a refrigerated environment (such as a refrigerator), and has high application flexibility. Attached Figure Description

[0014] Figure 1 : Left axial side view of this utility model (with cover open); Figure 2 : Right side view of this utility model (with the cover open).

[0015] 1-Main container body; 2-Baffle; 3-Condensation chamber; 4-Air inlet; 5-Air outlet; 6-U-shaped connecting pipe; 7-Stainless steel tube bundle; 8-Liquid outlet pipe; 9-Container lid; 10-Observation window; 11-Handle. Detailed Implementation

[0016] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0017] The multi-stage condenser of this invention has at least three condensation chambers 3 and at least three sets of stainless steel tube bundles 7. This invention is described with reference to the following preferred embodiments, but the scope of protection is not limited thereto: like Figure 1 , Figure 2As shown, in this preferred embodiment, the main container 1 is welded from stainless steel plates into a horizontal cuboid, and the size can be designed according to the processing capacity.

[0018] The partition 2 consists of two sets, which divide the main container 1 into three equal-volume condensing chambers 3 along the long side of the main container 1 and perpendicular to the ground.

[0019] Three sets of stainless steel tube bundles 7 are equidistantly arranged along the long side of the main container 1 within each condensation chamber 3. Each stainless steel tube bundle 7 consists of several stainless steel tubes of the same specification arranged at uniform row and column spacing. Each stainless steel tube bundle 7 within the condensation chamber 3 is independently set, and the length of the stainless steel tubes contained therein is limited to the condensation chamber. The two ends of the stainless steel tubes are independently fixed to the front and rear side walls of the condensation chamber, respectively.

[0020] The air inlet 4 is located at one end of the main container 1 and is connected to the first condensing chamber 3. The air outlet 5 is located at the other end opposite to the first end and is connected to the last condensing chamber 3. Both the air inlet 4 and the air outlet 5 adopt standard flange interfaces to facilitate the connection of pipelines.

[0021] The ends and beginnings of each pair of adjacent condensation chambers 3 are connected by a U-shaped connecting pipe 6, so that the gas forms an S-shaped flow path within the container.

[0022] It is equipped with an openable container lid 9, which is sealed and fixed to the main container body 1 by screws. The container lid 9 is provided with 6 transparent observation windows 10 and 4 handles 11 to facilitate observation of the interior and opening of the container lid 9.

[0023] The bottom of the main container 1 is provided with a liquid outlet pipe 8, which guides the condensed liquid to an external collection container.

[0024] In practical applications, this invention is placed in a suitable condensation environment, such as a custom-made refrigerator, which provides the cooling source to cool the entire container. During system operation, water vapor is introduced through the inlet 4, flows sequentially through each condensation chamber, and is frequently dispersed by the stainless steel tube bundle 7, greatly improving the condensation and collection effect. After the condensation process is complete, the dry gas is extracted from the outlet 5 by the vacuum pump, and the condensed liquid is discharged to the outside through the outlet pipe 8, minimizing the risk of water vapor entering the final stage vacuum pump and damaging the equipment.

[0025] It should be noted that those skilled in the art can increase the number of partitions 2 according to the actual processing volume requirements. More condensation chambers can be formed (such as four or five), and the number of stainless steel tube bundles 7 in each condensation chamber can also be increased accordingly (such as four or five sets). The main container body 1 can be customized into a cuboid or a cube according to different customized condensation environments. These simple transformations based on the same inventive concept all fall within the protection scope of this utility model.

Claims

1. A multi-stage condenser for a negative pressure extraction system, comprising a main container body (1), characterized in that: The interior of the main container (1) is divided into at least three sequentially adjacent condensation chambers (3) by at least two sets of partitions (2). One end of the main container (1) is provided with an air inlet (4) that communicates with the first condensing chamber (3), and the other end opposite to the first end is provided with an air outlet (5) that communicates with the last condensing chamber (3). The ends and beginnings of two adjacent condensation chambers (3) are connected by a U-shaped connecting pipe (6), so that the gas forms an S-shaped flow path in the container; Each of the condensing chambers (3) is provided with a condensing tube group with the same structure, and each condensing tube group includes at least three sets of stainless steel tube bundles (7) arranged in the same direction.

2. A multi-stage condenser for a negative pressure extraction system according to claim 1, characterized in that: The main container (1) is a horizontal cuboid shape.

3. A multi-stage condenser for a negative pressure extraction system according to claim 2, characterized in that: The partition (2) is arranged along the long side of the main container (1) and perpendicular to the bottom surface.

4. A multi-stage condenser for a negative pressure extraction system according to claim 3, characterized in that: The number of partitions (2) is two sets, which divide the main container (1) into three independent condensation chambers (3).

5. A multi-stage condenser for a negative pressure extraction system according to claim 4, characterized in that: Each of the condenser tube bundles comprises three sets of stainless steel tube bundles (7) arranged at equal distances in three positions: left, center, and right, along the long side of the main container body (1).

6. A multi-stage condenser for a negative pressure extraction system according to claim 5, characterized in that: Each group of stainless steel tube bundles (7) is formed by a regular arrangement of multiple stainless steel tubes that are parallel to the short side of the main container body (1). The two ends of the stainless steel tubes are respectively fixed independently to the front and rear side walls of the condensation chamber (3).

7. A multi-stage condenser for a negative pressure extraction system according to claim 6, characterized in that: The bottom surface of the main container (1) is provided with a liquid outlet pipe (8).

8. A multi-stage condenser for a negative pressure extraction system according to claim 7, characterized in that: The top surface of the main container (1) is provided with an openable container lid (9).

9. A multi-stage condenser for a negative pressure extraction system according to claim 8, characterized in that: The container lid (9) is provided with one or more transparent viewing windows (10) and one or more handles (11).

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