A gas-liquid separation device

Abstract

The utility model discloses a kind of gas-liquid separation devices, including tank body, tank cover and filter assembly;The tank cover upper is provided with gas-liquid inlet and gas outlet;The tank cover inside is equipped with filter assembly mounting seat, the filter assembly is connected with the tank cover by filter assembly mounting seat with screw thread;The gas outlet is communicated with the filter assembly inside;The filter assembly inside is equipped with multiple layers filter core, and filter assembly bottom is distributed with multiple through holes;The tank body bottom is provided with liquid outlet;The tank cover is connected with the tank body with screw thread.The utility model gas-liquid separation device simple structure, easy to operate, low in cost and can realize to filter core regular replacement, wide application range.

Description

Technical Field

[0001] This utility model belongs to the technical field of gas-liquid separators, and specifically relates to a gas-liquid separation device. Background Technology

[0002] Gas-liquid separation devices are industrial equipment widely used in refrigeration, chemical, petroleum, natural gas and compressed air systems. Their purpose is to efficiently separate liquid particles (such as droplets and mist) entrained in gaseous media to ensure the normal operation of downstream equipment.

[0003] Patent CN115475452B discloses a gas-liquid separation device. A gas-liquid mixture is input through an inlet pipe, then flows spirally through a first spiral plate between a first and second separation cylinder, and a second spiral plate between the second separation cylinder and an inner cone cylinder. Gas-liquid separation occurs during this flow, effectively solving the technical problem of large amounts of liquid droplets entrained in the separated gas and poor separation efficiency. However, the interior of this gas-liquid separation device is difficult to clean, and long-term use can easily lead to impurity accumulation, affecting the purity of the separated gas and liquid. Patent CN105642023A discloses a gas-liquid separator that utilizes the density difference between gas and liquid. When the liquid and gas flow together, the liquid is subject to gravity, causing the gas to exit from the gas outlet of the upper cover and the liquid to exit from the liquid outlet of the lower cover. This simple and reliable physical structure achieves a gas-liquid separation efficiency of over 90%. However, some liquid existing in a mist-like state still cannot be separated, making it unsuitable for processes requiring high gas purity.

[0004] In the field of medical devices, centrifugal separators are commonly used. They separate liquid and gaseous substances through centrifugal force, causing them to exit through different outlets. However, centrifugal gas-liquid separators are relatively complex in structure and assembly, making it difficult to periodically replace the internal filter element. Replacing the entire separator is also relatively costly. Furthermore, existing gas-liquid separators suffer from small capacity, inability to filter and drain simultaneously, or large size for those requiring simultaneous filtration and drainage. Therefore, there is an urgent need for a gas-liquid separation device that is simple in structure, easy to operate, low in cost, allows for periodic filter element replacement, and has a wide range of applications. Utility Model Content

[0005] To solve the above-mentioned technical problems and improve the shortcomings of existing gas-liquid separation devices, this utility model is achieved through the following solution: A gas-liquid separation device includes a tank, a tank cover, and a filter assembly; The can lid is provided with a gas-liquid inlet and a gas outlet; the inner side of the can lid is provided with a filter assembly mounting base, and the filter assembly is threadedly connected to the can lid through the filter assembly mounting base; the gas outlet is in communication with the interior of the filter assembly; the filter assembly is provided with multiple filter elements inside, and multiple through holes are distributed at the bottom of the filter assembly; the bottom of the can body is provided with a liquid outlet; the can lid and the can body are threadedly connected.

[0006] Furthermore, the filter assembly mounting base is a hollow boss, and the boss has a threaded groove inside.

[0007] Preferably, the filter assembly mounting base and the filter assembly form a closed cavity, and the gas outlet is connected to the closed cavity.

[0008] Furthermore, the large end face of the boss contacts the inner side of the can cover, which helps to disperse the force on the thread and prevent the thread from stripping and being damaged due to local overload. It is suitable for threaded connection scenarios that require frequent disassembly and assembly or bear large loads.

[0009] Preferably, the draft angle of the boss is 5°-10°; when the draft angle reaches the above range, the flow channel conforms to the fluid dynamics, which can reduce flow resistance and adhesion, increase the driving force for the downward flow of liquid, and carry away residual trace liquid or contaminants, effectively avoiding liquid stagnation and dirt deposition.

[0010] More preferably, the draft angle of the boss is 8°.

[0011] Furthermore, the filter assembly has an external thread at its upper port that matches the internal threaded groove of the boss. The filter assembly is threadedly connected to the can lid, which facilitates the periodic replacement, cleaning, or sterilization of the filter element.

[0012] Furthermore, the gas-liquid inlet is located between the boss and the edge of the tank cover, and communicates with the interior of the tank.

[0013] Furthermore, both the gas-liquid inlet and the gas outlet employ quick-connect couplings.

[0014] Preferably, the quick connector is controlled by mechanical locking and automatic valves, enabling quick connection or disconnection without the need for tools.

[0015] Furthermore, the two quick connectors are threadedly connected to the can lid.

[0016] Preferably, a sealing assembly is provided between the quick connectors of the gas-liquid inlet and the gas outlet and the tank cover, and the sealing assembly may be a sealant or a sealing gasket.

[0017] Furthermore, the upper section of the tank is a cylindrical cavity, and the lower section is a funnel-shaped liquid collection section. The tank adopts an integral molding design.

[0018] Preferably, the lower funnel shape facilitates liquid collection and allows for complete emptying under gravity, effectively improving separation efficiency.

[0019] Furthermore, the connection between the upper and lower sections is rounded. This rounded corner design makes the inner surface continuous and smooth, effectively preventing liquid deposition and facilitating cleaning, while also avoiding damage to sensitive cells caused by shear forces.

[0020] Furthermore, a thermosetting nut is embedded in the center of the bottom of the lower section of the tank.

[0021] Preferably, the thermosetting nut serves as the carrier for the connection and has a high-strength thread, making it suitable for frequent connection or disassembly. At the same time, since the liquid outlet is a stress concentration area, local stress is easily generated when installing or tightening other connecting parts. The thermosetting nut can distribute the load and prevent the liquid outlet from cracking or deforming due to excessive local stress.

[0022] Furthermore, a self-locking quick-connect female coupling is used at the liquid outlet, and the self-locking quick-connect female coupling is threadedly connected to the thermosetting nut. This not only enables a reliable, leak-free, quick connection but also automatically controls the liquid flow, effectively avoiding operational errors caused by manually opening and closing the valve.

[0023] Preferably, the self-locking quick-connect female connector has inherent airtightness, which can effectively prevent gas from escaping.

[0024] Furthermore, the filter element inside the filter assembly is attached to the through hole, and the filter element consists of a filter screen and absorbent foam, with the filter screen and absorbent foam sequentially attached to the through hole.

[0025] Preferably, a filter screen can accurately filter solid particles in liquids or gases, and different levels of filtration can be achieved according to the precision of the filter screen mesh.

[0026] Preferably, absorbent foam can quickly absorb liquids to achieve dry-wet separation or dehydration, while the pores of the sponge can intercept some fine particles, further improving the purification effect.

[0027] Furthermore, a sealing ring is provided between the tank body and the tank lid.

[0028] Preferably, the sealing ring is an O-ring or a lip seal.

[0029] Furthermore, a snap-fit ​​structure is provided on the top of the tank body. This snap-fit ​​structure enables quick and precise assembly and positioning between the tank body and the tank cover, while providing a reliable fixed connection after assembly, ensuring that they will not easily separate during use and guaranteeing the structural stability of the device.

[0030] Furthermore, the tank body is made of transparent PC material, which has good resistance, is not easily corroded or rusted, and allows for a clear view of the separation of gas and liquid.

[0031] This utility model gas-liquid separation device achieves the replacement of the filter element inside the filter element by threading the filter assembly and the tank cover; at the same time, the filter element uses a filter screen to filter out impurities that may be contained in the gas-liquid mixture, and uses water-absorbing foam to adsorb some of the liquid that exists in a mist state; when a large amount of liquid accumulates, the liquid can be quickly drained by inserting a self-locking quick female connector into the liquid outlet and corresponding to the male connector.

[0032] Compared with the prior art, the beneficial effects of this utility model include: 1) This utility model provides a gas-liquid separation device with a simple overall structure, which is suitable for gas-liquid mixtures and scenarios containing other impurity particles; the filter element is replaced regularly by connecting the filter component to the can lid by thread, so as to ensure that liquid impurities in the gas are effectively intercepted and the gas-liquid separation effect is guaranteed.

[0033] 2) This utility model provides a gas-liquid separation device. By using a self-locking quick connector for liquid treatment, it can not only prevent gas from escaping, but also make the drainage operation simpler and improve the efficiency of simultaneous filtration and drainage. Attached Figure Description

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of the gas-liquid separation device of this utility model; Figure 2 This utility model gas-liquid separation device is shown in section AA. Figure 3 Top view of the gas-liquid separation device of this utility model; Figure 4 This utility model's gas-liquid separation device is shown in the BB cross-section.

[0035] The attached diagram is labeled as follows: 1-tank body, 101-liquid outlet, 102-thermal fusion nut, 103-sealing ring, 104-clamp, 105-self-locking quick-connect female connector, 2-tank cover, 201-gas-liquid inlet, 202-gas outlet, 203-protrusion, 3-filter assembly, 301-through hole, 302-filter screen, 303-absorbent foam. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0037] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] like Figure 1-3 As shown, this utility model provides a gas-liquid separation device, including a tank body 1, a tank cover 2, and a filter assembly 3; a gas-liquid inlet 201 and a gas outlet 202 are provided on the top of the tank cover 2; both the gas-liquid inlet 201 and the gas outlet 202 are quick connectors, and the two quick connectors are threadedly connected to the tank cover 2 respectively; a liquid outlet 101 is provided at the bottom of the tank body 1; a filter assembly mounting seat is provided on the inside of the tank cover, and the filter assembly 3 is threadedly connected to the tank cover 2 through the filter assembly mounting seat; the gas outlet 202 is in communication with the inside of the filter assembly 3; the filter assembly 3 has multiple layers of filter elements inside, and multiple through holes 301 are distributed at the bottom of the filter assembly; the tank cover 2 and the tank body 1 are threadedly connected.

[0040] The filter assembly 3 mounting base is a hollow boss 203 with a threaded groove inside. The gas-liquid inlet 201 is located between the filter assembly mounting base and the edge of the tank cover 2, communicating with the interior of the tank body 1. The upper section of the tank body 1 is a cylindrical cavity, and the lower section is a funnel-shaped liquid collection section. The connection between the upper and lower sections is rounded. The tank body adopts an integral molding design. A heat-fusion nut 102 is embedded in the center of the bottom of the lower section of the tank body 1. A self-locking quick-connect female connector 105 is provided at the liquid outlet 101, which is threadedly connected to the heat-fusion nut 102. The filter element in the filter assembly 3 fits into the through hole 301, and a filter screen 302 and absorbent foam 303 are arranged in sequence. A sealing ring 103 is provided between the tank body 1 and the tank cover 2. A buckle 104 structure is provided at the top of the tank body 1. The tank body 1 is made of transparent PC material. This utility model device uses multiple threaded connections, which can be repeatedly disassembled and assembled, facilitating maintenance and parts replacement, and also facilitating internal cleaning.

[0041] This invention adopts the working principle of gravity sedimentation. Due to the density difference between the gas phase and the liquid phase, the liquid will naturally settle down to the bottom of the tank along the tank wall under the action of gravity, while the gas will move upward, so that the clean gas goes out from the gas outlet and the liquid flows out from the liquid outlet.

[0042] To better understand the technical solution of this utility model, the following specific embodiments are selected to illustrate the operation process of a gas-liquid separation device of this utility model: (The sealing ring 103 of this utility model adopts an O-ring, and the filter element adopts a filter screen 302 and absorbent foam 303.) In this embodiment, the gas-liquid separation device is applied to the cell processing process. First, it is necessary to confirm that the entire device is completely sealed. At the same time, the entire device is subjected to high-pressure sterilization. After sterilization, a pressure holding test is performed to ensure sterility. Before introducing cell culture medium, the inside of the gas-liquid separation device and all inlets and outlets are moistened with sterile buffer or culture medium to reduce non-specific adsorption of air bubbles on the surface.

[0043] Example 1: Operation process of gas-liquid separator 1) First, insert the bioreactor aeration system pipeline into the quick connector 201 of the gas-liquid inlet on the tank cover 2 of the gas-liquid separator. When you feel a significant change in resistance, it indicates that the quick connector locking mechanism is engaged, and aeration will begin. This will keep the gas-liquid separator under a stable, slightly positive pressure (0.1-0.3 bar) that is slightly higher than atmospheric pressure, ensuring that all the gas inside the device can escape. 2) Then, the gas-liquid mixture rich in bubbles is introduced into the tank 1 through the gas-liquid inlet quick connector 201. When the gas-liquid mixture enters the tank 1, the flow rate suddenly decreases due to the change in space. This causes the entrained droplets and tiny cell clusters to settle down the tank wall by their own gravity (which is much denser than gas) in the low-speed airflow. The settled liquid collects in the liquid collection section at the bottom of the tank, and the liquid flow rate can be observed through the tank. When there is a lot of liquid accumulated in the lower section, the liquid in the tank is collected. Simply insert the male connector corresponding to the bottom self-locking quick connector 105 to drain the water. 3) After settling, the gas flows upward, approaches and enters the filter assembly 3 on the can lid 2, and passes through the bottom through hole 301, filter screen 302 and absorbent foam 303 in sequence to purify the gas layer by layer; first, the filter screen 302 filters out any impurities that may be contained in the gas, and then the absorbent foam 303 adsorbs some of the gas-liquid mixture that exists in a mist state, so that the clean gas escapes from the gas outlet 202 at the top of the can lid 2; the separated gas is collected by plugging the quick connector of the gas collection device into the gas outlet 202 on the can lid 2 of the separation device. 4) After collection, the entire gas-liquid separation device must be circulated and cleaned with sterile water or a designated cleaning agent to prevent cell residues from drying and accumulating at the inlet and outlet and becoming a source of pollution. 5) Determine the lifespan of the filter screen and absorbent foam within the filter assembly based on the actual application scenario, and replace them periodically. (If there is more liquid in the gas-liquid mixture, more frequent replacement is required; if there is less liquid in the gas-liquid mixture, replacement once every six months or one year is sufficient.)

[0044] This invention is applicable to scenarios involving gas-liquid mixtures and mixtures containing other impurities. The gas-liquid mixture enters the tank through the gas-liquid inlet. Under the influence of gravity, the liquid moves along the tank wall. Due to the density difference between the gas and liquid, the gas rises and the liquid sinks. The gas passes sequentially through the through-holes in the filter assembly, the filter screen, and the absorbent foam, allowing the "clean" gas to exit from the gas outlet. Simultaneously, when a large amount of liquid accumulates in the lower section of the tank, rapid drainage can be achieved simply by inserting the male connector corresponding to the self-locking quick-connect female connector at the liquid outlet, eliminating the need for manual pipe connection and simplifying the drainage operation. In summary, this invention features a simple overall structure, saving costs and time, and facilitating the replacement of the filter element.

[0045] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A gas-liquid separation device, characterized in that, The gas-liquid separation device includes a tank body, a tank cover, and a filter assembly; The can lid is provided with a gas-liquid inlet and a gas outlet; the inner side of the can lid is provided with a filter assembly mounting base, and the filter assembly is threadedly connected to the can lid through the filter assembly mounting base; the gas outlet is in communication with the interior of the filter assembly; the filter assembly is provided with multiple filter elements inside, and multiple through holes are distributed at the bottom of the filter assembly; the bottom of the can body is provided with a liquid outlet; the can lid and the can body are threadedly connected.

2. The gas-liquid separation device according to claim 1, characterized in that, The filter assembly mounting base is a hollow boss, and the boss has a threaded groove inside.

3. The gas-liquid separation device according to claim 2, characterized in that, The gas-liquid inlet is located between the filter assembly mounting base and the edge of the tank cover, and communicates with the inside of the tank.

4. The gas-liquid separation device according to claim 1, characterized in that, Both the gas-liquid inlet and the gas outlet use quick couplings, and the two quick couplings are threadedly connected to the can lid.

5. The gas-liquid separation device according to claim 1, characterized in that, The upper section of the tank is a cylindrical cavity, and the lower section is a funnel-shaped liquid collection section. The connection between the upper and lower sections is rounded. The tank adopts a one-piece molding design.

6. The gas-liquid separation device according to claim 5, characterized in that, A thermosetting nut is embedded in the center of the bottom of the lower section of the tank.

7. The gas-liquid separation device according to claim 6, characterized in that, The liquid outlet is equipped with a self-locking quick-connect female connector, which is threadedly connected to the thermosetting nut.

8. The gas-liquid separation device according to claim 1, characterized in that, The filter element inside the filter assembly is fitted with the through hole; the filter element is a filter screen and absorbent foam.

9. The gas-liquid separation device according to claim 1, characterized in that, A sealing ring, which is an O-ring or a lip seal, is provided between the tank body and the tank cover.

10. The gas-liquid separation device according to any one of claims 1-9, characterized in that, The tank is made of transparent PC material.

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