Oil-gas separator

Abstract

The invention 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 located in the liquid storage container, and the gas outlet is located 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 cost can be reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of oil-gas separation, and in particular relates to an oil-gas separator. Background Art

[0002] For large air conditioning systems (such as heat pump air-cooled screw water system), in order to ensure the normal operation of the compressor, it is necessary to provide lubricating oil to the compressor through the oil return pipe. In this process, the lubricating oil often mixes with the gaseous refrigerant, which will affect the overall performance of the system. Therefore, it is necessary to configure the compressor with an oil-gas separation device to separate the lubricating oil and the gaseous refrigerant. After the oil-gas separation, the lubricating oil can be sent back to the oil return pipe of the compressor through the oil return pipe to achieve lubrication of the compressor related parts, while the gaseous refrigerant realizes the cooling and heating functions of the system through phase change in circulation.

[0003] Conventional oil-gas separation devices usually use filters to intercept refrigerant oil. The intercepted refrigerant oil adheres to the filter and easily clogs the filter, resulting in a decrease in the filter flux and oil-gas separation efficiency. The filter needs to be replaced frequently, which is costly. Summary of the invention

[0004] The purpose of the present invention is to provide an oil-gas separator with reasonable structure, good filtering effect, and only needs to disassemble the filtering container to clean it, without replacing the filtering container, so as to reduce the cost.

[0005] The object of the present invention is achieved in that:

[0006] 4. The diaphragm of claim 1, wherein the filter comprises a filter, a liquid storage tank, and a filter. The filter comprises a filter element and a liquid storage tank. The filter element comprises a filter element, a liquid storage tank, and a float. The filter element is arranged in the liquid storage tank and is located in the upper half of the liquid storage tank. The lower end of the liquid storage tank is provided with a receiving groove for accommodating the float. The bottom of the receiving groove is provided with an oil channel. The float will block or open the oil channel due to changes in the oil height of the liquid storage tank. The filter element comprises a filter cylinder, a filter reel, a support rod, and a filter base. The filter cylinder is fixedly connected to the filter base. The outer peripheral side of the upper end of the filter reel is tightly fitted with the filter cylinder. The lower end of the filter is provided with a plurality of through holes for oil to flow out. The inner peripheral side of the upper end of the filter reel is in contact with the support rod.

[0007] In the above-mentioned oil-gas separator, the filter drum is a structure formed by curling a metal sheet, the height of the filter drum gradually decreases from the upper outer peripheral side to the upper inner peripheral side, and a plurality of protrusions are arranged on the metal sheet.

[0008] In the above-mentioned oil-gas separator, a liquid storage space is reserved between the outer peripheral side of the lower end of the filter reel and the filter base, and a plurality of gaps for oil liquid to flow out are provided at the connection between the filter base and the filter cylinder at the lower end of the filter cylinder, and the filter base is provided with an annular groove, and the lower end of the support rod is clamped in the annular groove.

[0009] In the above-mentioned oil-gas separator, a limiting cap is provided on 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 contact outer diameter of the support rod and the inner circumference of the upper end of the filter roll, and the inner side of the upper end of the filter roll is at least partially tightly clamped on the bottom of the limiting cap.

[0010] In the above-mentioned oil-gas separator, a gas filter is also arranged on the outside of the filter container.

[0011] In the above-mentioned oil-gas separator, the gas filter is located in the liquid storage container.

[0012] In the above-mentioned oil-gas separator, a float switch device is provided at the lower end of the liquid storage container, and the float switch device is used to open and close the oil outlet.

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

[0014] In the above-mentioned oil-gas separator, a baffle is arranged in the filter tank, and the baffle separates the filter tank into a gas containing space and an oil containing space. A through hole is arranged on the baffle, and a float switch is arranged on the through hole.

[0015] In the above-mentioned oil-gas separator, the gas filter is located in the gas containing space, and an isolation plate is provided on the gas filter. The isolation plate divides the gas containing space into a to-be-filtered area and a filtered area, and the gas outlet is located in the filtered area.

[0016] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0017] The present invention replaces the traditional filter screen with a filter drum. When the filter container has been used for a long time, it only needs to be disassembled and the filter drum opened for cleaning, which is easy to operate and clean. The filter drum is a curled stainless steel sheet structure, and a plurality of convex points are arranged on the stainless steel sheet. When the stainless steel sheet is curled into the filter drum, since a plurality of convex points are arranged on the stainless steel sheet, there are gaps between the curled stainless steel sheets, which facilitates the passage of oil, and at the same time, impurities will be intercepted by the convex points. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of Embodiment 1 of the present invention;

[0019] Figure 2 is a cross-sectional view of embodiment 1 of the present invention;

[0020] Figure 3 It is an enlarged view of point A of the first embodiment of the present invention;

[0021] Figure 4 is a schematic structural diagram of a filtering container according to a first embodiment of the present invention;

[0022] Figure 5 It is a structural schematic diagram of a support rod and a filter base according to a first embodiment of the present invention.

[0023] Figure 6 is a schematic diagram of the structure of the filter drum after unfolding according to the first embodiment of the present invention;

[0024] Figure 7 is a structural diagram of Embodiment 2 of the present invention;

[0025] Figure 8 It is a cross-sectional view of the second embodiment of the present invention.

[0026] The meaning of the symbols in the figure:

[0027] 1-filter container; 2-liquid storage container; 3-gas filter; 4-filter tank; 5-air inlet; 11-filter; 12-liquid storage barrel; 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 reel; 113-support rod; 114-filter base; 115-gap; 116-bump; 117-check valve. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with specific embodiments:

[0029] Embodiment 1, as Figure 1-Figure 6As shown: an oil-gas separator, comprising a filter container 1 and a liquid storage container 2, wherein the lower end of the liquid storage container 2 is provided with an oil outlet 21, and the upper end of the liquid storage container 2 is provided with a gas outlet 22, 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 float 13, the filter 11 is arranged in the liquid storage barrel 12, and is located in the upper half of the liquid storage barrel 12, The lower end of the liquid storage barrel 12 is provided with a receiving groove 14 for accommodating the float 13, and the bottom of the receiving groove 14 is provided with an oil channel 15. The float 13 will block or open the oil channel 15 due to the change of the oil height in the liquid storage barrel 12. The filter 11 includes a filter cylinder 111, a filter reel 112, a support rod 113, and a filter base 114. The filter cylinder 111 is fixedly connected to the filter base 114, and the upper peripheral side of the filter reel 112 is connected to the filter cylinder. 111 fits tightly, and the lower end of the filter 11 is provided with a plurality of through holes for oil to flow out, and the inner peripheral side of the upper end of the filter roll 112 contacts the support rod 113, and the filter roll 112 is a structure formed by curling a metal sheet, and the height from the outer peripheral side of the upper end to the inner peripheral side of the upper end of the filter roll 112 gradually decreases, and a plurality of protrusions 116 are provided on the metal sheet, and the filter roll replaces the traditional filter screen. After the oil and gas mix and enter the filter roll, due to the small gap of the filter roll, the oil falling speed will be greatly reduced compared with the traditional filter screen, and the high-pressure gas can pass through the gap or even the protrusion through hole on the steel sheet to quickly pass through the filter roll, which can filter the impurities on the one hand and separate the oil and gas more efficiently on the other hand. The filter roll is a stainless steel sheet curling molding structure, and a plurality of protrusions are provided on the stainless steel sheet. When the stainless steel sheet is curled into the filter roll, since a plurality of protrusions are provided on the stainless steel sheet, there are gaps between the curled stainless steel sheets, which is convenient for the oil to pass through, and impurities will be intercepted by the protrusions.

[0030] In the above-mentioned oil-gas separator, a liquid storage space is reserved between the outer peripheral side of the lower end of the filter drum 112 and the filter base 114. A plurality of gaps 115 for oil to flow out are provided at the lower end of the filter cylinder 111 at the connection between the filter base 114 and 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. Specifically, this is to facilitate the dripping of oil and avoid oil accumulation resulting in poor oil discharge.

[0031] In the above-mentioned oil-gas separator, a limiting cap is provided on the top of the support rod 113, and 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 contact between the support rod 113 and the inner circumference 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 on the bottom of the limiting cap. Specifically, this is to ensure that it is well connected with the filter drum, and the designed limiting cap can separate the oil and gas, making it convenient for the filter drum to better filter the oil and gas.

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

[0033] In the above-mentioned oil-gas separator, the gas filter 3 is located in 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 mesh cylinder, which is the existing technology and will not be elaborated here.

[0034] In the above-mentioned oil-gas separator, a float switch device 23 is provided at the lower end of the liquid storage container 2, and 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 a set height, the float will float upward due to buoyancy, and there is a ejector pin under the float. When the ejector 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 liquid level lower than the set liquid level of the float switch device, the float falls back, and the float ejector pin retreats into the oil outlet, and the oil outlet is blocked and cannot continue to discharge the oil.

[0035] Embodiment 2: This embodiment is basically the same as Embodiment 1, except that Figure 7 As shown: it also includes a filter tank 4, which is 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 connected to 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. Specifically, this is to improve the filtering effect of the gas and also to increase the storage capacity of the oil. Figure 8 As shown, four one-way valves 117 can be provided on the filter tank and the liquid storage container, and the four one-way valves are two liquid inlet valves and two liquid outlet valves respectively. Oil can be added to the filter tank and the liquid storage tank through the liquid inlet valves, and the oil at the lower ends of the filter tank and the liquid storage tank can be discharged through the liquid storage valves. The filter tank includes a tank body and a tank cover, and the tank body and the tank cover are connected by a flange, which makes it convenient to disassemble and assemble the filter tank and replace the filter cotton at a later time.

[0036] In the above-mentioned oil-gas separator, a baffle 44 is provided in the filter tank 4, and the baffle 44 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. The isolation plate 31 divides the gas containing space into a to-be-filtered 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 peephole is provided at the lower end of the liquid storage container 2. Specifically, this is to facilitate observation of the amount of oil in the liquid storage container.

[0037] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An oil-gas separator, characterized in that: The invention comprises a filter container (1) and a liquid storage container (2), wherein the lower end of the liquid storage container (2) is provided with an oil outlet (21), and the upper end of the liquid storage container (2) is provided with a gas outlet (22), 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 is located in the upper half of the liquid storage barrel (12), and the lower end of the liquid storage barrel (12) is provided with a receiving groove (14) for receiving the floating ball (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 height of the liquid storage barrel (12); the filter (11) comprises a filter cylinder (111), a filter reel (112), a support rod (113), and a filter base (114); the filter cylinder (111) is fixedly connected to the filter base (114); the outer peripheral side of the upper end of the filter reel (112) is tightly fitted with the filter cylinder (111); the lower end of the filter (11) is provided with a plurality of through holes for oil to flow out; the inner peripheral side of the upper end of the filter reel (112) is in contact with the support rod (113).

2. The oil-gas separator according to claim 1, characterized in that: The filter drum (112) is a structure formed by curling a metal sheet, the height of the filter drum (112) gradually decreases from the upper outer peripheral side to the upper inner peripheral side, and a plurality of protrusions (116) are provided on the metal sheet.

3. The oil-gas separator according to claim 1 or 2, characterized in that: A liquid storage space is reserved between the outer peripheral side of the lower end of the filter reel (112) and the filter base (114); a plurality of gaps (115) for oil liquid to flow out are provided at the lower end of the filter cylinder (111) at the connection between the filter base (114) and 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-gas separator according to claim 1, characterized in that: A limiting cap is provided on the top of the support rod (113), 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 contact between the support rod (113) and the inner circumference of the upper end of the filter drum (112), and at least a part of the inner side of the upper end of the filter drum (112) is tightly clamped on the bottom of the limiting cap.

5. The oil-gas separator according to claim 3, characterized in that: A gas filter (3) is also provided on the outside of the filter container (1).

6. The oil-gas separator according to claim 4, characterized in that: The gas filter (3) is located in the liquid storage container (2).

7. The oil-gas separator according to claim 5, characterized in that: A float switch device (23) is provided at the lower end of the liquid storage container (2), and the float switch device (23) is used to switch the oil outlet (21) on and off.

8. The oil-gas separator according to claim 5, characterized in that: The invention also comprises a filter tank (4), wherein the filter tank (4) is 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 connected to 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-gas separator according to claim 8, characterized in that: A baffle (44) is arranged in the filter tank (4), and the baffle (44) divides the filter tank (4) into a gas accommodating space and an oil accommodating space. A through hole is arranged on the baffle (44), and a float switch is arranged on the through hole.

10. The oil-gas separator according to claim 7, characterized in that: The gas filter (3) is located in the gas containing space. An isolation plate (31) is provided on the gas filter (3). The isolation plate (31) divides the gas containing space into a to-be-filtered area (32) and a filtered area (33). The gas outlet (43) is located in the filtered area (33).

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