Oil-gas separator

Abstract

The utility model relates to an oil-gas separator, which belongs to the technical field of oil-gas separation, and comprises a filter container and a liquid storage container, the lower end part of the liquid storage container is provided with an oil liquid outlet, the upper end part of the liquid storage container is provided with a gas outlet, the filter container is positioned in the liquid storage container, and the gas outlet is positioned in the liquid storage container. The filtering container is provided with an air inlet extending out of the liquid storage container, the filtering container comprises a filter, a liquid storage barrel and a floating ball, the filter is arranged in the liquid storage barrel and located on the upper half portion of the liquid storage barrel, the lower end portion of the liquid storage barrel is provided with a containing groove used for containing the floating ball, and the bottom of the containing groove is provided with an oil channel; the oil-gas separator has the advantages that the oil-gas separator is reasonable in structure and good in filtering effect, the filtering container can be cleaned only by detaching the filtering container, the filtering container does not need to be replaced, and the cost can be reduced.

Description

Technical Field

[0001] This utility model belongs to the field of oil-gas separation technology, and specifically refers to an oil-gas separator. Background Technology

[0002] For large air conditioning systems (such as heat pump air-cooled screw chiller systems), lubricating oil needs to be supplied to the compressor through the oil return pipe to ensure its normal operation. During this process, lubricating oil often mixes with gaseous refrigerant, which affects the overall system performance. Therefore, an oil-gas separator is needed to separate the lubricating oil and gaseous refrigerant. The lubricating oil after separation can be returned to the compressor's oil return pipe to lubricate related compressor components, while the gaseous refrigerant achieves the system's cooling and heating functions through phase change during its circulation.

[0003] Conventional oil-gas separators typically use filters to intercept refrigeration oil. The intercepted refrigeration oil adheres to the filter screen, which can easily clog it, leading to a decrease in filter throughput and reduced oil-gas separation efficiency. Furthermore, the filter screen needs to be replaced frequently, resulting in higher costs. Summary of the Invention

[0004] The purpose of this invention is to provide an oil-gas separator with a reasonable structure, good filtration effect, and which only requires disassembly of the filter container for cleaning, without the need to replace the filter container, thus reducing costs.

[0005] The purpose of this utility model is achieved as follows:

[0006] An oil-gas separator includes a filter container and a storage container. The lower end of the storage container has an oil outlet, and the upper end of the storage container has a gas outlet. The filter container is located inside the storage container and has an air inlet extending out of the storage container. The filter container includes a filter, a storage tank, and a float. The filter is located inside the storage tank and in the upper half of the storage tank. The lower end of the storage tank has a receiving groove for accommodating the float. The bottom of the receiving groove has an oil channel. The float will block or open the oil channel due to changes in the oil level in the storage tank. The filter includes a filter cylinder, a filter roll, a support rod, and a filter base. The filter cylinder is fixedly connected to the filter base. The upper outer periphery of the filter roll is tightly fitted to the filter cylinder. The lower end of the filter has several through holes for oil to flow out. The upper inner periphery of the filter roll is in contact with the support rod.

[0007] In the aforementioned oil-gas separator, the filter roll is a structure formed by rolling up a metal sheet. The height of the filter roll gradually decreases from the outer circumference of the upper end to the inner circumference of the upper end, and the metal sheet is provided with several protrusions.

[0008] In the aforementioned oil-gas separator, a liquid storage space is left between the lower outer periphery of the filter roll and the filter base. The connection between the filter base and the filter roll body has several gaps at the lower end of the filter roll body for oil to flow out. The filter base has an annular groove, and the lower end of the support rod is engaged in the annular groove.

[0009] In the aforementioned oil-gas separator, a limiting cap is provided at the top of the support rod. The outer diameter of the limiting cap gradually increases from top to bottom, and the outer diameter of the bottom of the limiting cap is larger than the outer diameter of the upper inner circumference of the support rod and the filter roll. At least part of the upper inner side of the filter roll is tightly locked to the bottom of the limiting cap.

[0010] In the aforementioned oil-gas separator, a gas filter is also provided on the outside of the filter container.

[0011] In the aforementioned oil-gas separator, the gas filter is located inside the liquid storage container.

[0012] In the aforementioned oil-gas separator, a float switch device is provided at the lower end of the liquid storage container, which is used to switch the oil outlet on and off.

[0013] The oil-gas separator described above also includes a filter tank, which is provided with a gas inlet, a liquid flow port and a gas outlet. The gas inlet and liquid flow port of the filter tank are respectively connected to the oil outlet and gas outlet of the liquid storage container, and the gas filter is located inside the filter tank.

[0014] In the aforementioned oil-gas separator, a baffle is provided inside the filter tank, which divides the filter tank into a gas-containing space and an oil-containing space. A through hole is provided on the baffle, and a float switch is provided on the through hole.

[0015] In the aforementioned oil-gas separator, the gas filter is located within the gas containment space, and a partition plate is provided on the gas filter. The partition plate divides the gas containment space into a filterable area and a filtered area, and the gas outlet is located in the filtered area.

[0016] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0017] This invention replaces the traditional filter screen with a filter roll. After the filter container has been used for a long time, it can be easily disassembled and the filter roll opened for cleaning. The filter roll is made of stainless steel sheet rolled into a filter roll, and the stainless steel sheet is provided with several protrusions. When the stainless steel sheet is rolled into a filter roll, the multiple protrusions on the stainless steel sheet create gaps between the rolled stainless steel sheets, which facilitates the passage of oil, while impurities are intercepted by the protrusions. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model;

[0019] Figure 2 This is a cross-sectional view of Embodiment 1 of this utility model;

[0020] Figure 3 This is an enlarged view of point A in Embodiment 1 of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the filter container in Embodiment 1 of this utility model;

[0022] Figure 5 This is a structural schematic diagram of the support rod and filter base of Embodiment 1 of this utility model.

[0023] Figure 6 This is a schematic diagram of the structure of the filter roll after it is unfolded according to Embodiment 1 of this utility model;

[0024] Figure 7 This is a schematic diagram of the structure of Embodiment 2 of this utility model;

[0025] Figure 8 This is a cross-sectional view of Embodiment 2 of this utility model.

[0026] The meaning of the labels in the diagram:

[0027] 1-Filter container; 2-Liquid storage container; 3-Gas filter; 4-Filter tank; 5-Air inlet; 11-Filter; 12-Liquid storage tank; 13-Float; 14-Receiving tank; 21-Oil outlet; 22-Liquid storage container; 23-Float switch device; 31-Isolation plate; 32-Area to be filtered; 33-Filtered area; 41-Gas inlet; 42-Liquid flow port; 43-Gas outlet; 44-Baffle; 111-Filter cylinder; 112-Filter roll; 113-Support rod; 114-Filter base; 115-Gap; 116-Protrusion; 117-One-way valve. Detailed Implementation

[0028] The present invention will be further described below with reference to specific embodiments:

[0029] Example 1, as Figures 1-6As shown: An oil-gas separator includes a filter container 1 and a storage container 2. The lower end of the storage container 2 has an oil outlet 21, and the upper end of the storage container 2 has a gas outlet 22. The filter container 1 is located inside the storage container 2, and the filter container 1 has an air inlet 5 extending out of the storage container 2. The filter container 1 includes a filter 11, a storage tank 12, and a float 13. The filter 11 is disposed inside the storage tank 12 and located in the upper half of the storage tank 12. The lower end of the storage tank 12 is provided with a receiving groove 14 for accommodating the float 13. An oil channel 15 is provided at the bottom of the receiving groove 14. The float 13 will block or open the oil channel 15 due to changes in the oil level in the storage tank 12. The filter 11 includes a filter cylinder 111, a filter roll 112, a support rod 113, and a filter base 114. The filter cylinder 111 is fixedly connected to the filter base 114. The upper outer periphery of the filter roll 112 is connected to the filter cylinder. The filter 11 is tightly fitted, and its lower end has several through holes for oil to flow out. The upper inner circumference of the filter roll 112 contacts the support rod 113. The filter roll 112 is a structure formed by rolling up a metal sheet. The height of the upper outer circumference of the filter roll 112 gradually decreases from the upper inner circumference to the upper outer circumference. Several protrusions 116 are provided on the metal sheet. The filter roll replaces the traditional filter screen. After the oil and gas mixture enters the filter roll, due to the small gap of the filter roll, the oil's descent speed is greatly reduced compared to the traditional filter screen. High-pressure gas can quickly pass through the filter roll through the gaps and even the protrusions and through holes on the steel sheet. On the one hand, it can filter impurities, and on the other hand, it can more efficiently separate oil and gas. The filter roll is a structure formed by rolling up a stainless steel sheet, and several protrusions are provided on the stainless steel sheet. When the stainless steel sheet is rolled into a filter roll, the multiple protrusions on the stainless steel sheet create gaps between the rolled stainless steel sheets, which facilitates the passage of oil. At the same time, impurities are intercepted by the protrusions.

[0030] In the aforementioned oil-gas separator, a liquid storage space is provided between the lower outer periphery of the filter roll 112 and the filter base 114. At the connection between the filter base 114 and the filter cylinder 111, several gaps 115 for oil to flow out are provided at the lower end of the filter cylinder 111. The filter base 114 is provided with an annular groove, and the lower end of the support rod 113 is engaged in the annular groove. Specifically, this is to facilitate oil dripping and avoid oil accumulation that would cause poor oil drainage.

[0031] In the aforementioned oil-gas separator, the support rod 113 is provided with a limiting cap at its top. The outer diameter of the limiting cap gradually increases from top to bottom, and the outer diameter of the bottom of the limiting cap is larger than the outer diameter of the upper inner circumference of the support rod 113 and the filter roll 112. The upper inner side of the filter roll 112 is at least partially and tightly fitted to the bottom of the limiting cap. Specifically, this is to ensure a good connection with the filter roll, and the limiting cap is designed to separate oil and gas, making it easier for the filter roll to filter oil and gas better.

[0032] In the aforementioned oil-gas separator, a gas filter 3 is also provided on the outside of the filter container 1. Specifically, this is to further filter the gas and ensure that the gas meets national standards.

[0033] In the aforementioned oil-gas separator, the gas filter 3 is located inside the liquid storage container 2. Specifically, this is to reduce the volume and facilitate transportation. Specifically, the gas filter is a combination of filter cotton and filter screen, which is existing technology and will not be described in detail here.

[0034] In the aforementioned oil-gas separator, a float switch device 23 is provided at the lower end of the liquid storage container 2. The float switch device 23 is used to open and close the oil outlet 21. Specifically, when the oil in the liquid storage container reaches the set height, the float will rise due to buoyancy. There is a pin under the float. When the pin leaves the oil outlet, the oil will be discharged from the oil outlet. When the oil in the liquid storage container is released to a level lower than the set liquid level of the float switch device, the float falls back, the float pin retracts into the oil outlet, and the oil outlet is blocked and cannot continue to discharge oil.

[0035] Example 2 is basically the same as Example 1, except that, as follows: Figure 7 As shown: It also includes a filter tank 4, which is equipped with a gas inlet 41, a liquid flow outlet 42, and a gas outlet 43. The gas inlet 41 and liquid flow outlet 42 of the filter tank 4 are respectively connected to the oil outlet 21 and gas outlet 22 of the storage container 2, and the gas filter 3 is located inside the filter tank 4. Specifically, this is to improve the gas filtration effect and also to increase the oil storage capacity. Figure 8 As shown, four one-way valves 117 can be installed on the filter tank and the liquid storage container. The four one-way valves are two inlet valves and two outlet valves. Oil can be added into the filter tank and the liquid storage container through the inlet valves, and the oil at the bottom of the filter tank and the liquid storage container can be discharged through the liquid storage valves. The filter tank includes a tank body and a tank cover. The tank body and the tank cover are connected by a flange, which facilitates the later disassembly and assembly of the filter tank and the replacement of the filter cotton.

[0036] In the aforementioned oil-gas separator, a baffle 44 is provided inside the filter tank 4, which divides the filter tank 4 into a gas containing space and an oil containing space. A through hole is provided on the baffle 44, and a float switch is provided on the through hole. The gas filter 3 is located in the gas containing space, and an isolation plate 31 is provided on the gas filter 3, which divides the gas containing space into a filterable area 32 and a filtered area 33. The gas outlet 43 is located in the filtered area 33. Specifically, this is to further ensure the purity of the gas. A sight glass is provided at the lower end of the liquid storage container 2, specifically, to facilitate observation of the amount of oil in the liquid storage container.

[0037] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. An oil and gas separator characterized by: The filter container (1) and the liquid storage container (2) are provided with an oil outlet (21) at the lower end of the liquid storage container (2) and a gas outlet (22) at the upper end of the liquid storage container (2), the filter container (1) is located in the liquid storage container (2), and the filter container (1) is provided with an air inlet (5) extending out of the liquid storage container (2), the filter container (1) comprises a filter (11), a liquid storage barrel (12) and a floating ball (13), the filter (11) is arranged in the liquid storage barrel (12) and located in the upper half of the liquid storage barrel (12), the lower end of the liquid storage barrel (12) is provided with a containing groove (14) for containing the floating ball (13), the bottom of the containing groove (14) is provided with an oil passage (15), the floating ball (13) blocks or opens the oil passage (15) due to the change of the oil level of the liquid storage barrel (12), the filter (11) comprises a filter cylinder (111), a filter drum (112), a support rod (113) and a filter base (114), the filter cylinder (111) is fixedly connected with the filter base (114), the outer periphery of the upper end of the filter drum (112) is tightly fitted with the filter cylinder (111), and the lower end of the filter (11) is provided with a plurality of through holes for oil outflow, and the inner periphery of the upper end of the filter drum (112) is in contact with the support rod (113).

2. The oil and gas separator of claim 1, wherein: The filter drum (112) is formed by curling a metal sheet, the height of the filter drum (112) gradually decreases from the outer periphery of the upper end to the inner periphery of the upper end, and a plurality of convex points (116) are arranged on the metal sheet.

3. The oil and gas separator according to claim 1 or 2, characterized in that: The lower end of the filter drum (112) is provided with a liquid storage space relative to the filter base (114), a plurality of gaps (115) for oil outflow are formed at the connection between the filter base (114) and the filter cylinder (111) at the lower end of the filter cylinder (111), the filter base (114) is provided with an annular groove, and the lower end of the support rod (113) is clamped in the annular groove.

4. The oil and gas separator of claim 1, wherein: The top of the support rod (113) is provided with a limiting cap, the outer diameter of the limiting cap gradually increases from top to bottom, the outer diameter of the bottom of the limiting cap is greater than the outer diameter of the contact between the support rod (113) and the inner periphery of the upper end of the filter drum (112), and the inner side of the upper end of the filter drum (112) is at least partially tightly clamped in the bottom of the limiting cap.

5. The oil and gas separator of claim 3, wherein: The outer side of the filter container (1) is further provided with a gas filter (3).

6. The oil and gas separator of claim 5, wherein: The gas filter (3) is located in the liquid storage container (2).

7. The oil and gas separator of claim 5, wherein: The lower end of the liquid storage container (2) is provided with a floating ball switch device (23) for opening and closing the oil outlet (21).

8. The oil and gas separator of claim 5, wherein: The filter tank (4) is further provided with a gas inlet (41), a liquid flow port (42) and a gas outlet (43), the gas inlet (41) and the liquid flow port (42) of the filter tank (4) are respectively communicated with the oil outlet (21) and the gas outlet (22) of the liquid storage container (2), and the gas filter (3) is located in the filter tank (4).

9. The oil and gas separator of claim 8, wherein: The filter tank (4) is provided with a baffle (44) which separates the filter tank (4) into a gas containing space and an oil liquid containing space, the baffle (44) is provided with a through hole, and a float switch is arranged on the through hole.

10. The oil and gas separator of claim 9, wherein: The gas filter (3) is located in the gas containing space, the gas filter (3) is provided with a separation plate (31), the separation plate (31) separates the gas containing space into a to-be-filtered area (32) and a filtered area (33), and the gas discharge port (43) is located in the filtered area (33).

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