Spiral-flow type oil-gas separator

Abstract

The invention relates to the technical field of oil-gas separation equipment, in particular to a spiral-flow type oil-gas separator which comprises a shell, a roller, a gas filtering cylinder, a strip-shaped filter element, a guide ring, a pressure tank and a recovery cavity. The roller is arranged in the shell and forms a rotating pair with the shell, a first blade is arranged at the bottom of the roller, the gas filtering cylinder is installed in the shell, and the strip-shaped filter element is arranged in the shell; the belt-shaped filter element is flexibly arranged on the roller and the air filter cylinder in a sleeving mode, the guide ring is arranged in the shell and located below the air filter cylinder, the pressure tank is arranged outside the shell, and the recycling cavity is formed in the bottom of the shell and used for recycling oil separated from air. In addition, the filter element regeneration function is achieved, shutdown is not needed in the belt-shaped filter element cleaning process, and production and machining cannot be disturbed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of oil-gas separation equipment, in particular to a cyclone type oil-gas separator. BACKGROUND

[0002] When the air compressor is running, the internal lubricating oil will mix with the compressed air to form an oil-gas mixture. Mining equipment such as pneumatic rock drills and shotcrete machines has high requirements for air quality. If the oil mist directly enters the compressed air system, it will affect the performance and service life of the equipment (such as aging of the seal and blockage of the valve), and secondly, it will increase the consumption of lubricating oil and increase the operating cost. Therefore, an oil-gas separator is needed to separate the oil to ensure stable operation of the equipment and reduce the failure rate.

[0003] In addition, when the air compressor is running, it directly inhales air from the surrounding environment for compression. Due to the special mine environment, the inhaled air usually contains a large amount of dust particles. These particles entering the air compressor and mining equipment will accelerate the wear of the parts, block the oil filter and cooler, and reduce the quality of the compressed air, affecting the normal operation of the equipment. The solution to the above problem is to use an oil-gas separator with a filter element. However, due to the large amount of particles inhaled, the filter element is easily blocked and quickly fails. Cleaning or replacing the filter element requires stopping the machine, which will affect the production and processing efficiency. The purpose of the present application is to provide a new oil-gas separation equipment to solve the above technical problems and promote the development of the field. SUMMARY

[0004] The present application aims to provide a cyclone type oil-gas separator to solve the problems mentioned in the background.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: including a shell, a roller, a filter cylinder, a belt-shaped filter element, a guide ring, a pressure tank and a recovery cavity. The bottom of the shell is provided with an air inlet pipe, and the top of the shell is provided with a connection port. The air inlet pipe is used for the air to be separated to enter the shell, and the connection port is used for connecting the external air suction pipeline to collect and utilize the separated air.

[0006] The roller is arranged in the shell and forms a rotating pair with the shell. The bottom of the roller is provided with a first blade. The roller is used to tension the belt-shaped filter element to prevent the belt-shaped filter element from relaxing and covering the air inlet holes on the surface of the filter cylinder.

[0007] The filter cylinder is fixedly installed below the connection port and communicates with the connection port. In specific implementation, the filter cylinder can be made of stainless steel to improve the service life and prevent rust. The diameter of the filter cylinder is greater than that of the roller. The purpose of the filter cylinder is to filter and separate the oil and air.

[0008] The belt-shaped filter core is flexibly sleeved on the roller and the filter cylinder, the filter cylinder side is provided with a plurality of air inlet holes, and the air inlet holes are only arranged at the contact position of the filter cylinder surface and the belt-shaped filter core. The belt-shaped filter core refers to a belt-shaped part made of filter core / filter cotton material which can be flexibly bent. The filter core / filter cotton belongs to the prior art and is known to those skilled in the art. Therefore, its specific specifications and specific materials will not be further explained. The skilled person can change it according to actual needs without substantially affecting the technical effect.

[0009] The guide ring is arranged in the housing below the filter cylinder, and the radius of the guide ring gradually decreases from top to bottom along the height direction of the filter cylinder. Such inclined surface structure makes the guide ring guide the oil liquid sliding off the top surface of the guide ring and the bottom surface of the guide ring.

[0010] The pressure tank is arranged outside the housing, the pressure tank gas outlet end extends into the housing and is adjacent to the inner side of the belt-shaped filter core and the first blade, and the pressure tank gas outlet end is provided with a nozzle. The pressure tank refers to a tank-shaped part for storing pressurized air. The pressure tank is used with an external pressurizing device, and the pressure tank is provided with an electromagnetic valve and a one-way valve which can be controlled by an external control device. The one-way valve is used to avoid backflow of the gas in the pressure tank, and the electromagnetic valve is used to control the opening and closing of the pressure tank gas outlet end.

[0011] The recovery cavity is arranged at the bottom of the housing, the recovery pipe is arranged outside the housing and communicates with the recovery cavity, and the recovery cavity top surface is provided with an oil inlet hole for oil liquid flowing in. The recovery cavity is used for recovering the oil liquid separated from the air.

[0012] To optimize the above technical solution, further measures are taken: further comprising a first circular table, the first circular table side is provided with a second blade, the air inlet pipe gas outlet end points to the second blade, the first circular table bottom is provided with a rotating shaft, the first circular table is arranged on the recovery cavity top surface through the rotating shaft and forms a rotating pair with the recovery cavity, the second blade surface is frosted, and the inclined surface of the first circular table can drive the falling oil liquid to slide off and promote the oil liquid to be collected by the recovery cavity. At the same time, the frosted surface is uneven, which helps the second blade to capture the fine oil liquid droplets carried in the air.

[0013] As a further improvement of the above technical solution: further comprising a second circular table, the second circular table is arranged on the rotating shaft below the first circular table, the second circular table side is provided with a third blade, and the oil inlet hole is covered by the second circular table. The second circular table is arranged to shield the oil inlet hole, so that the particles falling from the first circular table cannot directly enter the recovery cavity through the oil inlet hole. The second circular table moves synchronously with the first circular table, the third blade drives the oil liquid to form a vortex, and the particles will move away from the oil inlet hole due to their large density, so that the particles cannot fall into the recovery cavity through the oil inlet hole.

[0014] As a further improvement of the technical solution: the axes of the first and second circular tables coincide and the projected area of the first circular table on the horizontal plane is larger than that of the second circular table on the horizontal plane, which is intended to avoid the oil liquid containing particles falling along the first circular table from directly falling on the surface of the second circular table, and to help the oil liquid containing particles to move away from the oil inlet hole.

[0015] As an improvement of the foregoing technical solution: further comprising a ring-shaped collection groove formed on the top surface of the recovery cavity and connected with the inner surface of the shell, and a waste discharge pipe arranged outside the shell and communicating with the ring-shaped collection groove, the ring-shaped collection groove is used for collecting the oil liquid containing particles, which can be uniformly collected through the waste discharge pipe.

[0016] As an improvement of the foregoing technical solution: the gas inlet pipe is spiral-shaped, and the radius of the gas inlet pipe gradually decreases, which helps the fine oil droplets to collide with each other to form large-sized oil droplets when the gas flows in the spiral-shaped gas inlet pipe.

[0017] Further, mounting plates are arranged at the upper and lower ends of the filter cylinder respectively, and a press roller is arranged between the mounting plates, the press roller is located on the front and rear sides of the filter cylinder and forms a rotating pair with the mounting plates to rotate freely, the press roller presses the belt-shaped filter element against the surface of the filter cylinder, and the press roller can ensure the cooperation degree of the belt-shaped filter element and the filter cylinder to avoid loosening of the belt-shaped filter element.

[0018] Further, the surface of the filter cylinder is sprayed with a polytetrafluoroethylene coating, which has good chemical corrosion resistance and low surface friction coefficient, and the surface of the polytetrafluoroethylene is not easy to attach oil liquid and can play a lubricating role to avoid abrasion of the belt-shaped filter element.

[0019] From the above description of the structure of the present application, compared with the prior art, the present application has the following advantages:

[0020] (a) The oil liquid and particles entrained in the air can be effectively separated by secondary separation, and the separation effect is good;

[0021] (b) The belt-shaped filter element is used to separate the oil liquid and particles, which can ensure the separation effect of the air and is not easy to be blocked, and the belt-shaped filter element does not need to be stopped during cleaning, which will not interfere with production and processing;

[0022] (c) The oil liquid and particles move from the outside of the belt-shaped filter element to the inside of the belt-shaped filter element, and the gas moving from the inside of the belt-shaped filter element to the outside of the belt-shaped filter element is used to impact the oil liquid and particles, which can quickly separate the oil liquid and particles from the belt-shaped filter element, and the filter element has a fast regeneration speed and is not easy to be blocked. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, illustrate the preferred embodiment of the application and assist in

[0024] Figure 1 A schematic view of the three-dimensional structure of the present application;

[0025] Figure 2 A schematic view of the partial cross-sectional structure of the present application (first perspective view);

[0026] Figure 3 A schematic view of the cross-sectional structure of the present application;

[0027] Figure 4 A schematic view of the partial cross-sectional structure of the present application (second perspective view);

[0028] In the figure: housing 1, air inlet pipe 101, connecting port 102, roller 2, first blade 201, filter cylinder 3, mounting plate 301, compression roller 302, belt-shaped filter core 4, air inlet hole 401, guide ring 5, pressure tank 6, nozzle 601, recovery cavity 7, recovery pipe 701, oil inlet hole 702, first circular platform 8, second blade 801, rotating shaft 802, second circular platform 9, third blade 901, annular collection groove 10, waste discharge pipe 1001. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0030] Embodiment 1

[0031] Please refer to Figure 1 and Figure 4 The present application provides a cyclone oil-gas separator, which comprises a housing 1, a roller 2, a filter cylinder 3, a belt-shaped filter core 4, a guide ring 5, a pressure tank 6, a recovery cavity 7, a first circular platform 8 and a second circular platform 9. The housing 1 is provided with an air inlet pipe 101 at the bottom. The air inlet pipe 101 is in a spiral shape, and the radius of the air inlet pipe 101 gradually decreases along the length direction of the air inlet pipe 101. The housing 1 is provided with a connecting port 102 at the top.

[0032] The roller 2 is arranged in the housing 1 and forms a rotating pair with the housing 1. The roller 2 is provided with a first blade 201 at the bottom. The surface of the roller 2 is subjected to frosted treatment.

[0033] The filter cylinder 3 is fixedly installed below and in communication with the connecting port 102, and a polytetrafluoroethylene coating is sprayed on the surface of the filter cylinder 3.

[0034] The belt-shaped filter core 4 is flexibly sleeved on the roller 2 and the filter cylinder 3, a plurality of air inlet holes 401 are formed in the side surface of the filter cylinder 3, and the air inlet holes 401 are only arranged at the position where the surface of the filter cylinder 3 contacts the belt-shaped filter core 4, mounting plates 301 are arranged at the upper and lower ends of the filter cylinder 3, respectively, a press roller 302 is arranged between the mounting plates 301, the press roller 302 is located on the front and rear sides of the filter cylinder 3 and forms a rotating pair with the mounting plates 301 to freely rotate, and the press roller 302 abuts the belt-shaped filter core 4 against the surface of the filter cylinder 3.

[0035] The guide ring 5 is arranged in the housing 1 below the filter cylinder 3, and the radius of the guide ring 5 gradually decreases from top to bottom along the height direction of the filter cylinder 3.

[0036] The pressure tank 6 is arranged outside the housing 1, the gas outlet end of the pressure tank 6 extends into the housing 1 and is adjacent to the inner side of the belt-shaped filter core 4 and the first blade 201, and a nozzle 601 is arranged at the terminal end of the gas outlet end of the pressure tank 6.

[0037] The recovery cavity 7 is arranged at the bottom of the housing 1, a recovery pipe 701 in communication with the recovery cavity 7 is arranged outside the housing 1, and an oil inlet hole 702 for flowing oil is arranged on the top surface of the recovery cavity 7.

[0038] The first circular table 8 is provided with a second blade 801 on the side surface, the gas outlet end of the air inlet pipe 101 points to the second blade 801, a rotating shaft 802 is arranged at the bottom of the first circular table 8, the first circular table 8 is arranged on the top surface of the recovery cavity 7 through the rotating shaft 802 and forms a rotating pair with the recovery cavity 7, and the second blade 801 is in a frosted state.

[0039] The second circular table 9 is arranged on the rotating shaft 802 below the first circular table 8, the second circular table 9 is provided with a third blade 901 on the side surface, the oil inlet hole 702 is covered by the second circular table 9, the axis of the first circular table 8 and the second circular table 9 coincide, and the projection area of the first circular table 8 on the horizontal plane is greater than the projection area of the second circular table 9 on the horizontal plane.

[0040] Embodiment 2

[0041] Please refer to Figures 1-4 The present application provides a cyclone type oil-gas separator, which comprises a housing 1, a roller 2, a filter cylinder 3, a belt-shaped filter core 4, a guide ring 5, a pressure tank 6, a recovery cavity 7, a first circular table 8, a second circular table 9 and a ring-shaped collecting groove 10, the bottom of the housing 1 is provided with an air inlet pipe 101, the air inlet pipe 101 is in a spiral shape, the radius of the air inlet pipe 101 gradually decreases along the length direction of the air inlet pipe 101, and the top of the housing 1 is provided with a connecting port 102.

[0042] The roller 2 is arranged in the shell 1 and forms a rotary pair with the shell 1, and the bottom of the roller 2 is provided with a first blade 201.

[0043] The filter cylinder 3 is fixedly installed below the connecting port 102 and communicates with the connecting port 102, and the surface of the filter cylinder 3 is sprayed with a polytetrafluoroethylene coating.

[0044] The belt-shaped filter core 4 is flexibly sleeved on the roller 2 and the filter cylinder 3, a plurality of air inlet holes 401 are formed in the side surface of the filter cylinder 3, and the air inlet holes 401 are only arranged at the contact part between the surface of the filter cylinder 3 and the belt-shaped filter core 4, and the upper and lower ends of the filter cylinder 3 are respectively provided with mounting plates 301, and a press roller 302 is arranged between the mounting plates 301, the press roller 302 is located on the front and rear sides of the filter cylinder 3 and forms a rotary pair with the mounting plates 301 and can freely rotate, and the press roller 302 abuts the belt-shaped filter core 4 against the surface of the filter cylinder 3.

[0045] The guide ring 5 is arranged below the filter cylinder 3 in the shell 1, and the radius of the guide ring 5 gradually decreases from top to bottom along the height direction of the filter cylinder 3.

[0046] The pressure tank 6 is arranged outside the shell 1, the gas outlet end of the pressure tank 6 extends into the shell 1 and is adjacent to the inner side of the belt-shaped filter core 4 and the first blade 201, and the gas outlet end of the pressure tank 6 is provided with a nozzle 601.

[0047] The recovery cavity 7 is arranged at the bottom of the shell 1, and the shell 1 is provided with a recovery pipe 701 which communicates with the recovery cavity 7, and the top surface of the recovery cavity 7 is provided with an oil inlet hole 702 for oil to flow into.

[0048] The first circular table 8 is provided with a second blade 801 on the side surface, the gas outlet end of the air inlet pipe 101 points to the second blade 801, the bottom of the first circular table 8 is provided with a rotating shaft 802, and the first circular table 8 is arranged on the top surface of the recovery cavity 7 through the rotating shaft 802 and forms a rotary pair with the recovery cavity 7, and the second blade 801 is in a frosted state.

[0049] The second circular table 9 is arranged on the rotating shaft 802 below the first circular table 8, the side surface of the second circular table 9 is provided with a third blade 901, the oil inlet hole 702 is covered by the second circular table 9, the axis of the first circular table 8 and the second circular table 9 coincide, and the projection area of the first circular table 8 on the horizontal plane is greater than the projection area of the second circular table 9 on the horizontal plane.

[0050] The annular collecting groove 10 is formed on the top surface of the recovery cavity 7 and is connected with the inner surface of the shell 1, and the shell 1 is provided with a waste discharge pipe 1001 which communicates with the annular collecting groove 10.

[0051] Working principle: for example 1 and example 2, the air to be separated from the spiral inlet pipe 101 into the shell 1, the process air entrainment of small oil droplets can be in the inlet pipe 101 in each other to form a large size oil droplets, then the hole from the end of the inlet pipe 101 away from the second blade 801 to make the first circular table 8 rotation, air is driven by the second blade 801 will form a vortex, oil droplets and particulate matter due to the density greater than air will be guided ring 5 block to the shell 1, so as to realize the primary separation of air.

[0052] After the air completes the primary separation through the guide ring 5 into the upper part of the shell 1, the air through the strip filter core 4, inlet hole 401 into the filter cartridge 3 to complete the secondary separation, then the separation of air can be discharged through the connecting port 102 is collected, use. In the process of secondary separation, the oil droplets and particulate matter entrained in the air will adhere to the surface of the strip filter core 4, the pressure tank 6 outlet can spray out of the pressure gas impact first blade 201 and strip filter core 4, pressurized gas from the inside to the outside of the strip filter core 4 can be separated from the outside to the inside of the strip filter core 4 oil droplets, particulate matter, to avoid oil droplets, particulate matter block strip filter core 4 lead to strip filter core 4 failure, while the pressurized gas in cleaning strip filter core 4 at the same time also can impact the first blade 201 to make roller 2 rotation, because the strip filter core 4 is set on the roller 2 and filter cartridge 3, so the strip filter core 4 can be driven by the roller 2 rotation, will not affect the air through the inlet hole 401, so in the process of cleaning strip filter core 4 also need not stop, stop the car, will not cause interference to the production and processing.

[0053] From the air secondary separation of oil droplets and particulate matter will along the guide ring 5 surface drop eventually collected in the recovery cavity 7 above, the first circular table 8 rotation process, the second circular table 9 with its synchronous movement, the third blade 901 on the side of the second circular table 9 can drive the oil droplets gathered to form an oil liquid vortex, particulate matter due to the density greater than oil therefore will be far away from the oil inlet hole 702, help to improve the purity of the recovered oil, for example 2, because the recovery cavity 7 circumferentially provided with annular collection groove 10, therefore these particulate matter can fall into the annular collection groove 10 is enriched.

[0054] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or unit referred to must have a particular direction, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.

[0055] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "certain embodiments", "embodiment 1", "embodiment 2" and the like means that the 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 application. Descriptive expressions of the above terms in the specification do not necessarily refer to the same embodiment or example. Moreover, the particular feature, structure, material or characteristic described can be combined in any suitable manner in one or more embodiments or examples.

[0056] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can make modifications to the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to part of the technical features, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A cyclone oil-gas separator, characterized in that, include: The housing (1) has an air inlet pipe (101) at the bottom and a connection port (102) at the top. Roller (2), the roller (2) is disposed inside the housing (1) and forms a rotating pair with the housing (1), and a first blade (201) is provided at the bottom of the roller (2). Air filter cylinder (3), the air filter cylinder (3) is fixedly installed below the connection port (102) and communicates with the connection port (102); The strip filter element (4) is flexibly sleeved on the roller (2) and the air filter cylinder (3). The air filter cylinder (3) has a plurality of air inlet holes (401) on its side and the air inlet holes (401) are only provided on the surface of the air filter cylinder (3) in contact with the strip filter element (4). The guide ring (5) is located inside the housing (1) below the filter cylinder (3), and the radius of the guide ring (5) gradually decreases from top to bottom along the height direction of the filter cylinder (3); Pressure tank (6), the pressure tank (6) is located outside the housing (1), the outlet end of the pressure tank (6) extends into the housing (1) and is adjacent to the inner side of the strip filter element (4) and the first blade (201), and a nozzle (601) is provided at the end of the outlet end of the pressure tank (6). Recovery chamber (7) is located at the bottom of housing (1). A recovery pipe (701) communicating with the recovery chamber (7) is provided outside the housing (1). An oil inlet hole (702) for oil to flow in is provided on the top surface of the recovery chamber (7).

2. The cyclone oil-gas separator according to claim 1, characterized in that: It also includes a first truncated cone (8), on the side of which a second blade (801) is provided. The air outlet of the air inlet pipe (101) points to the second blade (801). A rotating shaft (802) is provided at the bottom of the first truncated cone (8). The first truncated cone (8) is set on the top surface of the recovery chamber (7) through the rotating shaft (802) to form a rotating pair with the recovery chamber (7). The second blade (801) is frosted.

3. A cyclone oil-gas separator according to claim 2, characterized in that: It also includes a second truncated cone (9), which is located on the rotating shaft (802) below the first truncated cone (8). A third blade (901) is provided on the side of the second truncated cone (9), and the oil inlet (702) is covered by the second truncated cone (9).

4. A cyclone oil-gas separator according to claim 3, characterized in that: The axes of the first frustum (8) and the second frustum (9) coincide, and the projected area of ​​the first frustum (8) on the horizontal plane is greater than the projected area of ​​the second frustum (9) on the horizontal plane.

5. A cyclone oil-gas separator according to any one of claims 2-4, characterized in that: It also includes an annular collection trough (10), which is formed on the top surface of the recovery chamber (7) and connected to the inner surface of the shell (1). A waste discharge pipe (1001) communicating with the annular collection trough (10) is provided on the outside of the shell (1).

6. A cyclone oil-gas separator according to any one of claims 1-4, characterized in that: The intake pipe (101) is spiral-shaped, and the radius of the intake pipe (101) gradually decreases.

7. A cyclone oil-gas separator according to any one of claims 1-4, characterized in that: The filter cylinder (3) is provided with mounting plates (301) at the top and bottom ends respectively, and pressure rollers (302) are provided between the mounting plates (301). The pressure rollers (302) are located on the front and rear sides of the filter cylinder (3) respectively and form a rotating pair with the mounting plates (301) to rotate freely. The pressure rollers (302) press the strip filter element (4) against the surface of the filter cylinder (3).

8. A cyclone oil-gas separator according to any one of claims 1-4, characterized in that: The surface of the air filter cartridge (3) is coated with polytetrafluoroethylene.

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