CN218924260U - Gas-liquid separator and compressed air purifying device - Google Patents

Abstract

The utility model provides a gas-liquid separator and a compressed air purifying device. Wherein, the gas-liquid separator includes: the device comprises a first shell, a second shell, a third shell, a fourth shell, a fifth shell and a sixth shell, wherein the side wall of the first shell is provided with an inlet, the top of the first shell is provided with an air outlet, the air flow to be treated enters the inside of the first shell through the inlet along the direction perpendicular to the side wall to rotate, and the movement direction is changed to collide with the inner wall of the first shell so as to separate liquid from gas; and the demister is arranged in the first shell and is positioned between the inlet and the air outlet. Therefore, the gas-liquid separation of the compressed air can be fully and effectively realized, the gas-liquid separation efficiency is improved, and the good drying effect of the compressed air is ensured.

Description

Gas-liquid separator and compressed air purifying device

Technical Field

The utility model relates to the technical field of air purification, in particular to a gas-liquid separator and a compressed air purification device.

Background

Under normal conditions, compressed air for instruments can be purified and dried by utilizing the compressed air purifying device, so that the content of water molecules in the compressed air is reduced, the damage of the water molecules in the compressed air to instruments, meters and the like is reduced, and the service lives of the instruments and meters are prolonged.

Specifically, the compressed air purification device generally comprises a cold dryer, namely a refrigeration type compressed air dryer, and the gas-liquid separator is an important component of the cold dryer, and the conventional gas-liquid separator generally utilizes the direct collision of air flow and the inner wall of a shell to realize gas-liquid separation, so that the separation efficiency of the gas-liquid separator is low, and the drying effect is influenced.

Disclosure of Invention

In view of the above, the present utility model provides a gas-liquid separator and a compressed air purifying apparatus, which can sufficiently and effectively realize gas-liquid separation of compressed air, improve gas-liquid separation efficiency, and ensure good drying effect of compressed air.

In a first aspect of the present utility model, there is provided a gas-liquid separator comprising: the device comprises a first shell, a second shell, a third shell, a fourth shell, a fifth shell and a sixth shell, wherein the side wall of the first shell is provided with an inlet, the top of the first shell is provided with an air outlet, the air flow to be treated enters the inside of the first shell through the inlet along the direction perpendicular to the side wall to rotate, and the movement direction is changed to collide with the inner wall of the first shell so as to separate liquid from gas; and the demister is arranged in the first shell and is positioned between the inlet and the air outlet.

Further, the gas-liquid separator further includes: and the inlet pipe is arranged perpendicular to the side wall and connected to the inlet, and extends to the inside of the first shell.

Further, the inlet pipe comprises a first end part and a second end part which are oppositely arranged, the first end part is positioned in the first shell, the second end part is positioned outside the first shell, wherein the first end part is arranged into an inclined surface structure, and the inclined surface structure is inclined downwards from the first end part to the second end part.

Further, the bottom of the first shell is also provided with a liquid outlet.

Further, the demister is a stainless steel wire mesh demister; and/or

The demister is detachably connected with the first shell.

In a second aspect of the present utility model, there is provided a compressed air purification apparatus comprising: the cold dryer comprises a compressor, a filter, a first heat exchanger and an evaporator which are sequentially communicated through pipelines; and the gas-liquid separator of any one of the first aspects, the gas-liquid separator being in communication with the evaporator via a conduit.

Further, the compressed air purification apparatus further includes: the cold dryer also comprises a second heat exchanger communicated with the gas-liquid separator through a pipeline, an inlet of the cold dryer is communicated with the second heat exchanger through a pipeline, and an outlet of the cold dryer is communicated with gas utilization equipment.

Further, the evaporator comprises a second shell and a copper pipe, wherein a drawing hole is formed in the second shell, the drawing hole is in a flaring shape, and the copper pipe is inserted into the drawing hole and is welded with the wall of the drawing hole.

Further, the evaporator further includes a tie rod installed inside the second housing in a longitudinal direction of the second housing.

Further, the dryer comprises an adsorption tower, wherein the adsorption tower is filled with the adsorbent, and the granularity of the adsorbent positioned at the two ends of the adsorption tower is larger than that of the adsorbent positioned in the middle of the adsorption tower.

The gas-liquid separator and the compressed air purifying device provided by the embodiment of the utility model combine three separation technologies of direct collision type separation, low-speed centrifugal separation and demisting separation to realize the drying treatment of the air flow to be treated, so that the gas-liquid separation of the compressed air can be fully and effectively realized, the gas-liquid separation efficiency of the gas-liquid separator is improved, the efficiency of a freeze dryer is fully exerted, and the good drying effect of the compressed air is ensured.

The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. Wherein:

FIG. 1 is a schematic view of a gas-liquid separator according to an alternative embodiment of the present utility model;

fig. 2 is a schematic structural view of an evaporator according to an alternative embodiment of the present utility model.

The correspondence between the reference numerals and the component names in fig. 1 to 2 is:

the device comprises a gas-liquid separator 100, a first shell 110, a 111 inlet, a 112 outlet, a 113 liquid outlet, 114 side walls, a 120 demister, a 130 inlet pipe, a 131 first end, a 132 second end, a 133 inclined plane structure, a 200 evaporator, a 210 second shell, 211 drawing holes, 220 copper pipes and 230 solder.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than those described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below.

A gas-liquid separator 100 and a compressed air purification apparatus according to some embodiments of the present utility model will be described below with reference to fig. 1 and 2, wherein the gas-liquid separator 100 is applied to a compressed air purification apparatus, and in particular, the compressed air purification apparatus includes a chiller dryer to which the gas-liquid separator 100 is applied, and the gas-liquid separator 100 is used to perform gas-liquid separation of compressed air.

As shown in fig. 1, an embodiment of a first aspect of the present utility model provides a gas-liquid separator 100, including: the first shell 110, the sidewall 114 of the first shell 110 is provided with an inlet 111, the top of the first shell 110 is provided with an air outlet 112, the air flow to be treated enters the interior of the first shell 110 through the inlet 111 along the direction vertical to the sidewall 114 to rotate, and the movement direction is changed to collide with the inner wall of the first shell 110 so as to realize the separation of liquid and gas; the demister 120 is disposed in the first housing 110 between the inlet 111 and the outlet 112.

The directions of the top and the bottom of the first housing 110 are shown by solid arrows in fig. 1, a cavity is formed in the first housing 110 for the airflow to be treated to circulate, the airflow to be treated can be understood as compressed air to be dried, the inlet 111 is formed on the side wall 114 of the first housing 110, the air outlet 112 is formed on the top of the first housing 110, that is, the air outlet 112 is located above the inlet 111, and the arrangement is such that the air in the airflow to be treated entering the first housing 110 from the inlet 111 moves upwards, so as to flow out to the outside of the first housing 110 through the air outlet 112 to realize airflow circulation.

In this embodiment, the airflow to be treated enters the interior of the first housing 110 through the inlet 111 along the direction perpendicular to the side wall 114, wherein the side wall 114 connects the top and the bottom of the first housing 110, i.e. the direction of the side wall 114 is the top-to-bottom direction, as indicated by the solid arrow in fig. 1, and the open arrow in fig. 1 is the circulation direction of the airflow to be treated. Therefore, the airflow to be treated enters the interior of the first housing 110 along the direction perpendicular to the side wall 114, and rotates in the first housing 110, so that the movement direction of the airflow to be treated changes, during the rotation process, the liquid drops mixed in the airflow to be treated also rotate together with the airflow to be treated and generate centrifugal force, and due to the large centrifugal force generated by the liquid drops, the liquid drops move outwards under the action of centrifugal force, namely move towards the outer part of the first housing 110 under the action of eccentricity, and when the liquid collides with the inner wall of the first housing 110 in the interior of the first housing, other liquid drops gather and grow and are separated from gas, so that gas-liquid separation is realized, the liquid drops move downwards under the action of gravity, and the gas moves upwards. It will be appreciated that some water molecules are also carried in the upwardly moving gas, such as in the form of a mist. Due to the fact that the demister 120 is arranged between the inlet 111 and the air outlet 112 in the first shell 110, demisting treatment can be carried out on gas after gas-liquid separation by the demister 120, the content of water molecules in the gas is further reduced, and the drier gas after demisting treatment is discharged to the outside of the first shell 110 through the air outlet 112 for subsequent treatment, so that the dryness of the gas discharged through the air outlet 112 of the gas-liquid separator 100 can be improved, good drying effect of compressed air is ensured, damage of the water molecules in the compressed air to instruments and meters is reduced, and the service lives of the instruments and meters are prolonged.

That is, the gas-liquid separator 100 provided in the embodiment of the present utility model combines three separation technologies of direct collision separation, low-speed centrifugal separation, and demisting separation to implement drying treatment of the gas flow to be treated (i.e., compressed air), thereby being capable of fully and effectively implementing gas-liquid separation on the compressed air, improving the gas-liquid separation efficiency of the gas-liquid separator, and being capable of fully separating cooled liquid water, fully playing the efficiency of the freeze dryer, and ensuring the good drying effect of the compressed air.

As shown in fig. 1, in some possible embodiments provided by the present utility model, the gas-liquid separator 100 further includes: the inlet pipe 130, the inlet pipe 130 is disposed perpendicular to the sidewall 114 and connected at the inlet 111, and the inlet pipe 130 extends to the inside of the first housing 110.

That is, the inside and the outside of the first housing 110 are communicated through the inlet pipe 130, and when the inlet pipe 130 is connected to the sidewall 114 through the inlet 111, the passage of the inlet pipe 130 may be regarded as the inlet 111 of the first housing 110. Since the inlet pipe 130 is perpendicular to the side wall 114, it can be ensured that the air flow to be treated flows into the first housing 110 along the direction perpendicular to the side wall 114 under the guidance of the inlet pipe 130, that is, the air-liquid separator 100 adopts tangential air inlet, and therefore, under the action of inertia, the air flow to be treated flowing into the first housing 110 rotates to change the movement direction, so that the air-liquid separation is realized by using low-speed centrifugal separation.

Further, the inlet pipe 130 extends to the inside of the first housing 110, and such an arrangement can reduce the distance between the end of the inlet pipe 130 located in the first housing 110 and the side wall 114 opposite to the inlet 111, thereby enabling the gas flow flowing into the first housing 110 through the inlet pipe 130 to collide with the side wall 114 opposite to the inlet 111 quickly and reliably, to change the direction of the gas flow to be treated to rotate the gas flow to be treated, and to achieve gas-liquid separation by direct collision, thereby enabling the separation efficiency of the gas-liquid separator 100 to be improved, enabling the gas to be treated to be separated sufficiently in solid line.

As shown in fig. 1, in the above embodiment, the inlet tube 130 includes the first end 131 and the second end 132 disposed opposite to each other, the first end 131 is located inside the first housing 110, the second end 132 is located outside the first housing 110, the first end 131 is provided as a slope structure 133, and the slope structure 133 is inclined downward from the first end 131 to the second end 132.

That is, the air flow to be treated enters the inlet pipe 130 from the second end 132 outside the first housing 110 and flows into the interior of the first housing 110 from the first end 131, and the inclined surface structure 133 is inclined downward from the first end 131 to the second end 132 due to the excellent guiding function of the inclined surface structure 133, so that the inclined surface structure 133 can block the flow of the air flow to be treated flowing out from the first end 131 directly upward. That is, the inclined surface structure 133 is provided, so that the flow of the air to be treated flowing out through the first end 131 can be reduced from directly moving upward without direct collision type separation and low-speed centrifugal separation, and therefore, the flow of the air to be treated flowing out into the first housing 110 through the first end 131 can be fully collided and rotated with the side wall 114 of the first housing 110, so that the direct collision type separation and low-speed centrifugal separation can be realized, the gas-liquid separation of the compressed air can be fully and effectively realized, and the gas-liquid separation efficiency can be improved.

As shown in fig. 1, in some possible embodiments of the present utility model, a drain 113 is further provided at the bottom of the first housing 110. It will be appreciated that the liquid outlet 113 communicates with the interior and the exterior of the first housing 110, and the liquid droplets separated by the gas and the liquid will move downward under the action of gravity, for example, the liquid droplets will move downward along the side wall 114 after being gathered on the side wall 114, so that the liquid droplets will be discharged to the exterior of the first housing 110 through the liquid outlet 113 located at the bottom of the first housing 110, thereby realizing the treatment of the accumulated liquid in the first housing 110.

The liquid drain 113 is disposed at the bottom of the first housing 110, which is beneficial to improving the thoroughly of the liquid drain of the first housing 110.

In some possible embodiments provided by the present utility model, the mist eliminator 120 is a stainless steel wire mesh mist eliminator 120. The stainless steel wire mesh demister 120 has the characteristics of small depressurization, large specific surface area and strong demisting capacity. For fog drops with the diameter of more than 3 mu m, the demisting capacity can reach more than 98%, the dryness of the gas discharged through the gas outlet 112 of the gas-liquid separator 100 can be greatly improved, and the good drying effect of the compressed air is ensured.

The demister 120 is a stainless steel wire mesh demister, that is, a filter element of the demister 120 adopts a stainless steel wire mesh, and because the stainless steel wire mesh is low in cost, the gas-liquid separator 100 provided by the embodiment of the utility model adopts the stainless steel wire mesh demister 120, so that the advantage of high efficiency of filtering, separating and dewatering is achieved, and meanwhile, the defects of pressure loss and high cost of maintaining and replacing the filter element caused by the traditional filter element filtering can be avoided, so that the gas-liquid separator is suitable for popularization and application.

In some possible embodiments provided by the present utility model, the demister 120 is detachably connected to the first housing 110, so that the demister 120 is convenient to mount and dismount from the first housing 110, and therefore, the demister 120 is convenient to dismount from the first housing 110 to replace a filter element or repair, is convenient to operate, and is beneficial to saving replacement parts and repair costs.

Specifically, the demister 120 may be detachably connected to the first housing 110 through at least one of a clamping structure, a mortise-tenon structure, and a screw structure, which is not specifically described in the present utility model.

An embodiment of a second aspect of the present utility model provides a compressed air purification apparatus including: the cold dryer comprises a compressor, a filter, a first heat exchanger and an evaporator 200 which are sequentially communicated through pipelines; and the gas-liquid separator 100 of any one of the embodiments of the first aspect, the gas-liquid separator 100 being in communication with the evaporator 200 through a pipe. Since the compressed air purification apparatus includes the gas-liquid separator 100 according to any one of the embodiments of the first aspect, the above-described gas-liquid separator 100 has all the advantageous technical effects, and will not be described in detail herein.

Specifically, the working principle of the cold dryer is as follows: the air flow to be treated, such as high temperature and high humidity compressed air, flowing out from the compressor is primarily filtered through a filter to remove dust and/or oil, then the filtered air flow to be treated is subjected to heat exchange with low temperature air in a first heat exchanger to reduce the temperature, then enters the evaporator 200 to be further reduced in temperature, for example, the temperature of the air flow to be treated flowing out from the evaporator 200 can reach about 2 ℃, and it is understood that most of gaseous moisture can form liquid water at the corresponding pressure dew point, so that the air flow to be treated flowing out from the evaporator 200 is subjected to gas-liquid separation through the gas-liquid separator 100, liquid water in the air flow to be treated can be discharged, and drier air to be treated flows out through the gas-liquid separator 100 to be subjected to subsequent treatment, thereby improving the drying effect of the compressed air for instruments and the service life of instruments.

Further, the cold dryer further comprises a second heat exchanger, the second heat exchanger is communicated with the evaporator 200 through a pipeline, namely, drier air flow to be treated which flows out of the evaporator 200 and has lower temperature flows into the second heat exchanger, heat exchange is carried out between the air flow to be treated and high-temperature air in the second heat exchanger, the air flow to be treated is transmitted to subsequent treatment equipment after the temperature of the air flow to be treated rises, the temperature of the air flow to be treated is higher, and dew condensation on the outer wall of a conveying pipeline can be prevented, so that the use safety and reliability of the equipment can be improved.

In some possible embodiments of the present utility model, the compressed air purification apparatus further includes: the inlet of the dryer is communicated with the second heat exchanger through a pipeline, and the outlet of the dryer is communicated with air utilization equipment. The air utilization equipment can be instruments, meters and the like, namely, compressed air which flows out through the second heat exchanger and has low moisture content and high temperature enters an adsorption tower of the dryer to be further dried and dehumidified, and then the lower dew point product air is obtained for the instruments and meters, so that the damage of water molecules to the instruments and meters can be greatly reduced, and the service life and reliability of the instruments and meters are provided.

That is, the compressed air purifying device provided by the embodiment of the utility model is a combined low dew point compressed air drying device, and the compressed air purifying device comprises a cooling dryer and a drying absorber, wherein the cooling dryer has the advantages of no air quantity loss and low energy consumption, but has the limitation of dew point temperature, and the drying absorber has the advantages of low dew point, but has the disadvantages of high regeneration air quantity loss and high energy consumption. The compressed air purifying device provided by the embodiment of the utility model combines the advantages of the cold dryer and the suction dryer, and plays the advantages of the cold dryer and the suction dryer to a greater extent through reasonable pipeline connection and capacity collocation, thereby achieving more economical operation points and high-quality low-dew-point finished gas.

As shown in fig. 2, in some possible embodiments of the present utility model, the evaporator 200 includes a second housing 210 and a copper tube 220, wherein a drawing hole 211 is formed in the second housing 210, the drawing hole 211 is flared, and the copper tube 220 is inserted into the drawing hole 211 and welded to a wall of the drawing hole 211.

In this embodiment, the drawing hole 211 is made by a hole drawing process, the area of the welding surface of the copper tube 220 is increased by the arrangement of the drawing hole 211, and the drawing hole 211 is in a flaring structure, for example, the top opening size of the drawing hole 211 is larger than the bottom opening size of the drawing hole 211, so that the welding plumpness of the copper tube 220 and the drawing hole 211 can be improved, for example, the solder 230 can be filled between the copper tube 220 and the outer wall of the drawing hole 211, thereby effectively avoiding the situation that the welding strength of the evaporator in the related art cannot be ensured due to the fact that the copper tube and the second shell are connected by adopting the conventional welding technology, improving the reliability and the sealing performance of the connection of the copper tube 220 and the second shell 210, reducing the leakage problem of the evaporator 200, greatly improving the sealing performance and the reliability of the evaporator 200, and being suitable for popularization and application.

In some possible embodiments provided by the present utility model, the evaporator 200 further includes a tie rod installed inside the second housing 210 in the longitudinal direction of the second housing 210. Wherein, the longitudinal direction of the second housing 210 may be perpendicular to the top-to-bottom direction of the second housing 210 as shown by solid arrows in fig. 2, and the copper pipe 220 is welded on the top and bottom of the second housing 210.

In this embodiment, the tie rod is installed inside the second housing 210 in the longitudinal direction of the second housing 210, that is, the tie rod in the evaporator 200 adopts the longitudinal fixing technology, thereby reinforcing the connection strength of the evaporation core in the second housing 210, greatly improving the shock excitation condition caused by the flow of compressed air, relieving the abrasion degree of the copper pipe 220, and eliminating the leakage condition caused by the extrusion deformation of the evaporator 200 by the reverse thrust due to the unloading of the air compressor or the rapid unloading at the inlet pipe section of the equipment, and improving the reliability of the evaporator 200.

Further, the tie rod may be a surface galvanized tie rod.

In some possible embodiments provided by the utility model, the dryer comprises an adsorption tower filled with adsorbent, wherein the granularity of the adsorbent at two ends of the adsorption tower is greater than that of the adsorbent at the middle of the adsorption tower.

The air flow to be treated flowing out of the cold dryer is provided for air utilization equipment after being dried by the adsorption tower, and it can be understood that the structure of the adsorption tower can be reasonably designed, the ideal air tower flow speed can be fully ensured, the time for fully contacting the air flow to be treated with the adsorbent in the adsorption tower can be realized, the moisture absorption is thorough, the cooling is full, and the stable outlet dew point of the dryer can be ensured.

In this embodiment, the particle size of the adsorbent at both ends of the adsorption tower is larger than that of the adsorbent at the middle of the adsorption tower, for example, the size of the adsorbent filled in the upper and lower ends of the adsorption tower may be from phi 6mm to phi 8mm, the size of the adsorbent filled in the middle of the adsorption tower may be from phi 3mm to phi 5mm, that is, the upper and lower ends of the adsorption tower are filled with the large particle adsorbent, and the middle of the adsorption tower is filled with the small particle adsorbent, whereby the occurrence of pulverization of the adsorbent and the like due to the impact of compressed air on the small particle adsorbent can be prevented, and the air flow diffusion effect is enhanced, improving the device performance.

Specifically, the sizes of the adsorbents filled at the upper end part and the lower end part of the adsorption tower can be phi 6mm, phi 7mm, phi 8mm or other sizes meeting the requirements, and the sizes of the adsorbents filled in the middle part of the adsorption tower can be phi 3mm, phi 4mm, phi 5mm or other sizes meeting the requirements.

Further, the adsorption tower is provided with an adsorbent filling port and an adsorbent discharging port so as to realize filling and replacement of the adsorbent.

Further, the number of the adsorption towers is two, namely a drying tower and a regeneration tower, and the working principle is as follows: since the capacity of air to contain water vapor is inversely proportional to the pressure, a portion of the air after drying (referred to as regeneration gas) is depressurized and expanded to atmospheric pressure by a regeneration tower, and this pressure change causes the expanded air to become drier, and then flows through the desiccant bed to be regenerated (i.e., the drying tower that has absorbed enough water vapor) that is not connected to the air stream, and the dried regeneration gas sucks out the water in the desiccant and takes it out of the dryer to achieve the dehumidification. The two towers work circularly, and no heat source is needed, so that dry compressed air is continuously supplied to the air utilization equipment.

The pipeline connection mode of the drying tower and the regeneration tower can be reasonably arranged, so that the drying gas and the regeneration gas adopt a reverse convection scheme, and because partial unused adsorbent in the drying tower does not need to be desorbed, the reverse flow of the regeneration gas can enable the residual load at the tail end of the adsorption bed layer to be low, and the method is more beneficial to keeping high dryness in the next cycle of adsorption operation.

Further, two adsorption towers in the dryer and each valve can be connected by adopting a large-flow valve and a connecting pipeline, so that the low flow speed through the compressed air connecting pipeline and the reduction of the along-line pressure are ensured.

Further, the dryer can charge the regeneration tower before switching, so that abrasion among particles of the drying agent in the adsorption tower and pressure fluctuation of a pipe network are reduced.

Further, when the high-pressure or high-flow (120 cubic and above) dryer is used for regenerating exhaust, a double pressure relief regeneration system can be adopted for exhausting, namely two-stage regeneration exhaust is adopted, so that noise and drying agent abrasion can be reduced, and the service life and quality of the drying agent can be prolonged.

Further, the suction drier further includes an exhaust silencer, which may be disposed outside the suction drier, thereby ensuring a good silencing effect.

In the description of the present utility model, the term "plurality" means two or more, unless explicitly defined otherwise, the orientation or positional relationship indicated by the terms "upper", "lower", etc. are orientation or positional relationship based on the drawings, merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model; the terms "coupled," "mounted," "secured," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present utility model, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In the present utility model, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A gas-liquid separator, comprising:

the device comprises a first shell, a second shell, a first shell and a second shell, wherein an inlet is formed in the side wall of the first shell, an air outlet is formed in the top of the first shell, air flow to be treated enters the inside of the first shell through the inlet along the direction perpendicular to the side wall to rotate, and the movement direction is changed to collide with the inner wall of the first shell so as to separate liquid from gas;

and the demister is arranged in the first shell and is positioned between the inlet and the air outlet.

2. The gas-liquid separator according to claim 1, further comprising:

and the inlet pipe is arranged perpendicular to the side wall and connected with the inlet, and extends to the inside of the first shell.

3. A gas-liquid separator according to claim 2, wherein,

the inlet tube comprises a first end and a second end which are oppositely arranged, the first end is positioned inside the first shell, the second end is positioned outside the first shell, wherein,

the first end portion is provided with a slope structure which slopes downward from the first end portion to the second end portion.

4. A gas-liquid separator according to claim 1, wherein,

the bottom of the first shell is also provided with a liquid outlet.

5. A gas-liquid separator according to claim 1, wherein,

the demister is a stainless steel wire mesh demister; and/or

The demister is detachably connected with the first shell.

6. A compressed air purification apparatus, comprising:

the cold dryer comprises a compressor, a filter, a first heat exchanger and an evaporator which are sequentially communicated through pipelines; and

a gas-liquid separator according to any one of claims 1 to 5 in communication with said evaporator via a conduit.

7. The compressed air purification apparatus according to claim 6, further comprising:

the cold dryer further comprises a second heat exchanger communicated with the gas-liquid separator through a pipeline, an inlet of the cold dryer is communicated with the second heat exchanger through a pipeline, and an outlet of the cold dryer is communicated with gas utilization equipment.

8. A compressed air purification apparatus according to claim 6, wherein,

the evaporator comprises a second shell and a copper pipe, wherein a drawing hole is formed in the second shell, the drawing hole is flaring, and the copper pipe is inserted into the drawing hole and is welded with the wall of the drawing hole.

9. The compressed air purification apparatus of claim 8, wherein the evaporator further comprises a tie rod installed inside the second housing in a longitudinal direction of the second housing.

10. A compressed air purification apparatus according to claim 7, wherein,

the dryer comprises an adsorption tower, wherein the adsorption tower is filled with an adsorbent, and the granularity of the adsorbent at the two ends of the adsorption tower is larger than that of the adsorbent at the middle of the adsorption tower.

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