A multi-layer composite filter core oil-gas separator

Abstract

This utility model discloses an oil-gas separator with a multi-layer composite filter element, relating to the technical field of oil-gas separators. The utility model includes an oil-gas tank, a filter element assembly, and a cyclone sleeve. A filter element support is fixedly installed at the upper opening of the oil-gas tank. The upper end of the filter element assembly is fixedly sleeved within the filter element support. The filter element assembly includes a coarse filter cylinder, an oil suction screen cylinder, and a fine filter screen cylinder. The coarse filter cylinder is a cylindrical structure with an open upper end and a closed lower end. The oil suction screen cylinder is sleeved inside the coarse filter cylinder, and the fine filter screen cylinder is sleeved inside the oil suction screen cylinder. A top sealing ring is fixedly provided at the upper end of the fine filter screen cylinder, which is fixedly sleeved at the upper ends of the coarse filter cylinder and the oil suction screen cylinder. The side wall of the coarse filter cylinder has a continuous annular array of pleats. This utility model, through the synergistic effect of cyclone pretreatment and multi-layer filtration, significantly improves the oil-gas separation efficiency and filter element lifespan, effectively solving the problems of high filter element load and incomplete separation in traditional separators, and ensuring the cleanliness of the output gas.

Description

Technical Field

[0001] This utility model belongs to the field of oil-gas separator technology, and in particular relates to an oil-gas separator with a multi-layer composite filter element. Background Technology

[0002] In air compressor systems, the oil-gas separator is a key component for ensuring compressed air quality and recovering lubricating oil. Traditional separators often use a single filter element structure, which has limited capacity to handle high-concentration, high-flow-rate oil-gas mixtures. When oil-containing gas enters the separator at high speed, oil droplets are not effectively captured and directly impact the filter element, which not only reduces separation efficiency but also causes the filter element to saturate rapidly, leading to increased pressure drop and shortened lifespan. Existing filter element structures are not effective at intercepting fine oil mist and lack a mechanism for guiding and collecting oil, making it easy for oil to be entrained again. In addition, the filter element's dust holding capacity and dirt-holding capacity are insufficient, making it prone to clogging under complex operating conditions, requiring frequent replacement and increasing maintenance costs. These problems directly affect the operating efficiency of the air compressor and the cleanliness of the output air.

[0003] To address these issues, we provide an oil-gas separator with a multi-layer composite filter element. Utility Model Content

[0004] The purpose of this utility model is to provide an oil-gas separator with a multi-layer composite filter element. The filter element assembly is placed inside an oil-gas tank. An oil-absorbing screen is fitted inside the coarse filter cylinder of the filter element assembly, and a fine filter cylinder is fitted inside the oil-absorbing screen. The wall of the coarse filter cylinder is configured with a continuous array of pleats. A set of vent holes is vertically arranged through the tips of the pleats near the cylinder axis on the side wall of the coarse filter cylinder. A set of arc grooves is vertically fixed in a circumferential array on the bottom surface of the coarse filter cylinder, positioned on one side of the vent holes in the pleats of the side wall of the coarse filter cylinder. The inner wall of the arc groove and the coarse filter... The pleated walls of the cylinder are all frosted. During use, after the oil-gas mixture enters the oil-gas cylinder, it passes through the pleated vent holes in the wall of the coarse filter cylinder and comes into contact with the inner wall of the arc groove. This allows the oil-gas mixture to fully contact the frosted surfaces of the coarse filter cylinder wall and the arc groove, thereby causing the oil in the oil-gas mixture to adhere to the cylinder wall and the inner wall of the arc groove. This reduces the filtration burden on the oil suction screen and the fine filter cylinder. The oil-gas mixture then passes through the oil suction screen for further oil adsorption, and finally, it is finely filtered by the fine filter cylinder.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to an oil-gas separator with a multi-layer composite filter element, comprising an oil-gas tank, a filter element assembly, and a cyclone sleeve. A filter element support is fixedly installed at the upper opening of the oil-gas tank. The upper end of the filter element assembly is fixedly fitted inside the filter element support. The filter element assembly includes a coarse filter cylinder, an oil suction screen cylinder, and a fine filter screen cylinder. The coarse filter cylinder is a cylindrical structure with an open upper end and a closed lower end. The oil suction screen cylinder is fitted inside the coarse filter cylinder, and the fine filter screen cylinder is fitted inside the oil suction screen cylinder. A sealing ring is fixedly provided at the upper end of the fine filter screen cylinder, and the sealing ring is fixedly fitted inside the coarse filter cylinder and the oil suction screen cylinder. At the upper end, the side wall of the coarse filter cartridge is folded with a continuous array of pleats in a ring. The tips of the pleats near the axis of the cartridge are vertically arrayed with a set of vent holes. A set of arc grooves are vertically fixed in a circumferential array on the upper surface of the bottom surface of the coarse filter cartridge. The length direction of the arc grooves is perpendicular to the axis of the coarse filter cartridge. The opening end of the arc grooves faces away from the axis of the coarse filter cartridge. The arc grooves are located on the side of the vent holes of the pleats on the side wall of the coarse filter cartridge. The inner wall of the arc grooves and the pleated barrel wall of the coarse filter cartridge are both frosted. The swirl sleeve is fitted on the outside of the coarse filter cartridge.

[0006] A further feature of this invention is that a flow-gathering cone is fixedly installed on the lower end face of the coarse filter cartridge, and the flow-gathering cone is a gradually downward conical structure.

[0007] A further feature of this invention is that the swirl sleeve includes an outer sleeve and a spiral ring sleeve. The spiral ring sleeve is fixedly fitted inside the outer sleeve. A top ring plate is fixedly provided on the upper end face of the outer sleeve. The filter element assembly is fitted inside the spiral ring sleeve. An air inlet pipe is fixedly connected to the upper end of the outer wall of the oil and gas tank. The axis of the air inlet pipe is perpendicular to and offset from the axis of the oil and gas tank. An air inlet hole is provided through the side wall of the outer sleeve and is connected to the air inlet pipe.

[0008] A further feature of this invention is that a set of diversion plates are vertically fixed in a circumferential array on the lower end face of the inner wall of the top ring plate, and the surface of the diversion plates is tangent to the inner wall of the top ring plate.

[0009] A further feature of this invention is that a converging sleeve is provided at the lower end of the swirl sleeve. The converging sleeve includes a wall-adhering tube and a dividing tube. The dividing tube is sleeved inside the wall-adhering tube. The outer wall of the wall-adhering tube is attached to the inner wall of the oil and gas tank. The dividing tube is integrally formed from top to bottom as a connecting section, a converging section, and a discharge section. The converging section expands downward and outward. A set of side plates is fixedly arranged in a circumferential array on the outer wall of the discharge section. The side of the side plate away from the discharge section is fixedly connected to the inner wall of the wall-adhering tube.

[0010] A further feature of this invention is that a bucket lid is detachably installed on the upper end of the filter element holder, and an air collection pipe is fixedly installed on the upper end of the bucket lid.

[0011] This utility model has the following beneficial effects: This invention significantly increases the initial contact area and surface adsorption capacity by setting a coarse filter cartridge with a continuous pleated structure, vent holes and a frosted arc groove surface. It can efficiently capture and condense most oil droplets, effectively reducing the filtration load on the inner oil-absorbing screen and fine filter cartridge, thereby improving the overall separation efficiency and extending the service life of the filter element.

[0012] This invention utilizes a swirling sleeve composed of an outer sleeve and a spiral ring to force the incoming oil-gas mixture to rotate, achieving preliminary gas-liquid separation using centrifugal force. Combined with a multi-layer composite filter element structure for coarse filtration, oil absorption, and fine filtration, it achieves efficient and graded separation of oil and gas, ensuring the cleanliness of the final output air. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0014] Figure 1 This is an exploded schematic diagram of an oil-gas separator with a multi-layer composite filter element.

[0015] Figure 2 This is an exploded view of the filter cartridge assembly.

[0016] Figure 3 This is a three-dimensional oblique sectional view of the coarse filter cartridge.

[0017] Figure 4 This is a side sectional view of the swirl sleeve.

[0018] Figure 5 This is a side sectional view of the flow-concentrating sleeve.

[0019] Figure 6 This is an exploded view of the oil and gas tank and its lid.

[0020] The attached diagram lists the components represented by each number as follows: 1-Oil and gas tank, 101-Filter element support, 101a-Tank cover, 101a-1-Gas collecting pipe, 102-Inlet pipe, 103-Gathering sleeve, 103a-Wall-attached pipe, 103b-Divider pipe, 103b-1-Sleeve section, 103b-2-Gathering section, 103b-3-Discharge section, 103b-4-Side plate, 2-Filter element assembly, 201-Coarse filter cylinder, 201a-Ventilation hole, 201b-Arc groove, 201c-Gathering cone, 202-Oil suction screen cylinder, 203-Fine filter screen cylinder, 203a-Top sealing ring, 3-Swirl sleeve, 301-Outer sleeve, 301a-Top ring plate, 301a-1-Drain plate, 301b-Inlet hole, 302-Spiral ring sleeve. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Example 1

[0022] Please see Figures 1 to 6 This utility model relates to an oil-gas separator with a multi-layer composite filter element, comprising an oil-gas tank 1, a filter element assembly 2, and a cyclone sleeve 3. A filter element holder 101 is fixedly installed at the upper opening of the oil-gas tank 1. The upper end of the filter element assembly 2 is fixedly sleeved within the filter element holder 101. The filter element assembly 2 includes a coarse filter cylinder 201, an oil suction screen cylinder 202, and a fine filter screen cylinder 203. The coarse filter cylinder 201 is a cylindrical structure with an open upper end and a closed lower end. The oil suction screen... Cylinder 202 is fitted inside coarse filter cylinder 201, and fine filter cylinder 203 is fitted inside oil suction cylinder 202. A top sealing ring 203a is fixedly provided at the upper end of the fine filter cylinder 203. The top sealing ring 203a is fixedly fitted onto the upper ends of the coarse filter cylinder 201 and the oil suction cylinder 202. The side wall of the coarse filter cylinder 201 has a continuous annular array of pleats. A set of through-holes is vertically arranged at the tips of the pleats near the cylinder axis of the coarse filter cylinder 201. A set of arc grooves 201b are vertically fixed in a circumferential array on the upper surface of the bottom surface of the coarse filter cartridge 201, with the length direction of the arc grooves 201b perpendicular to the cylinder axis of the coarse filter cartridge 201. The opening end of the arc grooves 201b faces away from the cylinder axis of the coarse filter cartridge 201. The arc grooves 201b are located on one side of the vent holes 201a in the side wall pleats of the coarse filter cartridge 201. The inner wall of the arc grooves 201b and the pleated barrel wall of the coarse filter cartridge 201 are both frosted. The vortex sleeve 3 is fitted on the outside of the coarse filter cartridge 201. By setting the coarse filter cartridge 201 with a continuous pleated structure, vent holes and frosted arc groove surface, the initial contact area and surface adsorption capacity are significantly increased, which can efficiently capture and condense most of the oil droplets, effectively reducing the filtration load of the inner oil suction screen 202 and the fine filter screen 203, thereby improving the overall separation efficiency and extending the service life of the filter element.

[0023] Specifically, a converging cone 201c is fixedly installed on the lower end face of the coarse filter cartridge 201. The converging cone 201c is a gradually downward conical structure. After the oil-gas mixture is guided downward by the swirl sleeve 3, it converges to the bottom of the oil-gas tank 1. As the gas pressure inside the oil-gas tank 1 increases, it returns to the bottom of the filter element assembly 2. Under the action of the converging cone 201c, the oil-gas mixture is concentrated at the bottom of the coarse filter cartridge 201, so that the oil-gas mixture is finally discharged after being filtered by the filter element assembly 2.

[0024] Furthermore, the swirl sleeve 3 includes an outer sleeve 301 and a spiral ring sleeve 302. The spiral ring sleeve 302 is fixedly sleeved inside the outer sleeve 301. A top ring plate 301a is fixedly provided on the upper end face of the outer sleeve 301. The filter element assembly 2 is sleeved inside the spiral ring sleeve 302. An air inlet pipe 102 is fixedly connected to the upper end of the outer wall of the oil and gas tank 1. The pipe axis of the air inlet pipe 102 is perpendicular to and offset from the tank axis of the oil and gas tank 1. An air inlet hole 301b is provided through the side wall of the outer sleeve 301 and is connected to the air inlet pipe 102. After the oil and gas mixture enters tangentially, it forms a rotating airflow along the spiral ring sleeve 302, so that the oil and gas mixture can flow more stably around the filter element assembly 2.

[0025] Furthermore, a set of diversion plates 301a-1 are vertically fixed in a circumferential array on the lower end face of the inner wall of the top ring plate 301a. The surface of the diversion plates 301a-1 is tangent to the inner wall of the top ring plate 301a. The diversion plates 301a-1 guide a portion of the oil-gas mixture into the filter element assembly 2, which is then filtered and discharged by the filter element assembly 2.

[0026] Furthermore, a converging sleeve 103 is provided at the lower end of the swirl sleeve 3. The converging sleeve 103 includes a wall-adhering tube 103a and a dividing tube 103b. The dividing tube 103b is sleeved inside the wall-adhering tube 103a, and the outer wall of the wall-adhering tube 103a is attached to the inner wall of the oil and gas tank 1. The dividing tube 103b is integrally formed from top to bottom as a connecting section 103b-1, a converging section 103b-2, and a discharge section 103b-3. The converging section 103b... -2 expands downward and outward, and a set of side plates 103b-4 are fixedly arranged in a circumferential array on the outer side wall of the discharge section 103b-3. The side of the side plate 103b-4 away from the discharge section 103b-3 is fixedly connected to the inner wall of the wall-attached pipe 103a. The flow-gathering sleeve 103 guides the oil-gas mixture that is not discharged from the filter element assembly 2 to the bottom of the oil-gas tank through its unique structure, and further separates the oil-gas mixture in the flow-gathering sleeve 103.

[0027] Furthermore, a cover 101a is detachably installed on the upper end of the filter element holder 101, and a gas collecting pipe 101a-1 is fixed on the upper end of the cover 101a; the cover 101a facilitates the installation and replacement of the filter element assembly, while the gas collecting pipe 101a-1 is used to collect and discharge the filtered clean gas.

[0028] The operation process in this embodiment is as follows: The oil-gas mixture enters the swirl sleeve 3 tangentially from the inlet pipe 102, forming a high-speed rotating airflow under the guidance of the spiral ring sleeve 302, achieving initial gas-liquid separation using centrifugal force. Subsequently, the gas carrying the remaining oil mist is divided into two paths under the guidance of the guide plate 301a-1. One path directly enters the filter element assembly 2 for filtration, while the other path moves downward along the swirl sleeve 3. The downward-moving oil-gas mixture is further separated in the convergence sleeve 103, where the separated oil is collected at the bottom of the oil-gas tank 1, while the gas is separated within the oil-gas tank. Under pressure, the gas rises again and gathers at the bottom of the coarse filter cartridge 201 under the guidance of the flow-gathering cone 201c. All the gas eventually enters the filter element assembly 2 through the vent 201a of the coarse filter cartridge 201, and is successively adsorbed and condensed by the frosted pleated surface and arc groove 201b of the coarse filter cartridge 201, deeply adsorbed by the oil suction screen 202, and finely filtered and purified by the fine filter screen 203. The separated oil flows down along the wall of each component and is collected at the bottom of the oil and gas tank for periodic discharge, while the clean gas is output through the gas collection pipe 101a-1.

[0029] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. An oil-gas separator with a multi-layer composite filter element, comprising an oil-gas tank (1), a filter element assembly (2), and a cyclone sleeve (3), characterized in that: A filter element holder (101) is fixedly installed at the upper opening of the oil and gas tank (1). The upper end of the filter element assembly (2) is fixedly sleeved inside the filter element holder (101). The filter element assembly (2) includes a coarse filter cylinder (201), an oil suction screen cylinder (202), and a fine filter screen cylinder (203). The coarse filter cylinder (201) is a cylindrical structure with an open upper end and a closed lower end. The oil suction screen cylinder (202) is sleeved inside the coarse filter cylinder (201). The fine filter screen cylinder (203) is sleeved inside the oil suction screen cylinder (202). A top sealing ring (203a) is fixedly provided at the upper end of the fine filter screen cylinder (203). The top sealing ring (203a) is fixedly sleeved at the upper end of the coarse filter cylinder (201) and the oil suction screen cylinder (202). The side wall of the coarse filter cylinder (201) The annular array has continuous pleats. The pleats of the coarse filter cylinder (201) are vertically arrayed with a set of vent holes (201a) at the tips of the pleats near the cylinder axis. A set of arc grooves (201b) are vertically fixed in a circumferential array on the upper surface of the bottom surface of the coarse filter cylinder (201). The length direction of the arc grooves (201b) is perpendicular to the cylinder axis of the coarse filter cylinder (201). The opening end of the arc grooves (201b) faces away from the cylinder axis of the coarse filter cylinder (201). The arc grooves (201b) are located on one side of the vent holes (201a) of the pleats on the side wall of the coarse filter cylinder (201). The inner wall of the arc grooves (201b) and the pleated barrel wall of the coarse filter cylinder (201) are both frosted. The vortex sleeve (3) is sleeved on the outside of the coarse filter cylinder (201).

2. The oil-gas separator with a multi-layer composite filter element according to claim 1, characterized in that: A flow-concentrating cone (201c) is fixedly installed on the lower end face of the coarse filter cartridge (201), and the flow-concentrating cone (201c) is a gradually downward conical structure.

3. The oil-gas separator with a multi-layer composite filter element according to claim 2, characterized in that: The swirl sleeve (3) includes an outer sleeve (301) and a spiral ring sleeve (302). The spiral ring sleeve (302) is fixedly sleeved inside the outer sleeve (301). A top ring plate (301a) is fixedly provided on the upper end face of the outer sleeve (301). The filter element assembly (2) is sleeved inside the spiral ring sleeve (302). An air inlet pipe (102) is fixedly connected to the upper end of the outer wall of the oil and gas tank (1). The pipe axis of the air inlet pipe (102) is perpendicular to and offset from the tank axis of the oil and gas tank (1). An air inlet hole (301b) is provided through the side wall of the outer sleeve (301). The air inlet hole (301b) is connected to the air inlet pipe (102).

4. The oil-gas separator with a multi-layer composite filter element according to claim 3, characterized in that: A set of drainage plates (301a-1) are vertically fixed in a circumferential array on the lower end face of the inner wall of the top ring plate (301a), and the surface of the drainage plates (301a-1) is tangent to the inner wall of the top ring plate (301a).

5. The oil-gas separator with a multi-layer composite filter element according to claim 1, characterized in that: The lower end of the swirling sleeve (3) is provided with a converging sleeve (103). The converging sleeve (103) includes a wall-adhering tube (103a) and a dividing tube (103b). The dividing tube (103b) is sleeved on the inner side of the wall-adhering tube (103a). The outer wall of the wall-adhering tube (103a) is attached to the inner wall of the oil and gas tank (1). The dividing tube (103b) is integrally formed from top to bottom as a connecting section (103b-1), a converging section (103b-2), and a discharge section (103b-3). The converging section (103b-2) expands downward and outward. A set of side plates (103b-4) are fixedly arranged in a circumferential array on the outer wall of the discharge section (103b-3). The side of the side plate (103b-4) away from the discharge section (103b-3) is fixedly connected to the inner wall of the wall-adhering tube (103a).

6. The oil-gas separator with a multi-layer composite filter element according to claim 5, characterized in that: The upper end of the filter element holder (101) is detachably fitted with a bucket lid (101a), and the upper end of the bucket lid (101a) is fixed with an air collecting pipe (101a-1).

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