Oil-water separator and multi-connected oil-water separation device

Abstract

The utility model belongs to the field of oil-water separation equipment, and particularly relates to an oil-water separator and a multi-connected oil-water separation device. The oil-water separator comprises a shell and an internal filter element assembly, wherein the shell is provided with an oil inlet hole, an oil outlet hole and a water accumulation chamber. The filter element is composed of a plurality of cylindrical filter element units, and a pre-filter cavity, a separation cavity and an output cavity are formed. Each filter element unit comprises a framework, a hydrophobic net and water absorption cloth, the framework provides rigid support, and high pressure resistance and impact resistance are enhanced. The multi-connected oil-water separation device comprises a base and a plurality of oil-water separators, wherein an input header pipe, an output header pipe and connecting units for connecting the oil-water separators are arranged on the base. The device can meet efficient oil-water separation of heavy-duty engine lubricating oil in a large-flow state. The oil-water separator is stable in design, resistant to high temperature and high pressure, suitable for various severe environments and capable of ensuring long-term stable operation, large-flow lubricating oil can be treated in parallel through the multi-connected design, and the oil-water separation efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of oil-water separation equipment, and specifically relates to an oil-water separator and a multi-connected oil-water separation device. Background Art

[0002] Dealing with moisture in lubricating oil is crucial for equipment using new energy engines. These new energy engines, such as engines powered by hydrogen, biogas, gas, methanol and petroleum waste gas, all pursue zero emissions and produce moisture during the emission process. If this moisture penetrates into the lubricating oil and cannot be effectively separated, it will cause the lubricating oil to emulsify and lose its key lubricating function. This will not only affect the normal operation of the machinery, but may also cause a series of serious mechanical failures.

[0003] At present, the core component for providing lubricating oil filtration for power machinery is the oil-water separator with a paper filter element. This type of filter element usually adopts a folded or pleated design to increase the filtration area while optimizing the space occupied. This design enables the filter element to provide a large area of ​​filtration effect in a compact space, thereby efficiently capturing and filtering impurities and water in the lubricating oil.

[0004] Oil-water separators often face high pressure, high impact and high temperature working environments, which are mainly caused by several key factors. First, as the load of power machinery increases, the flow rate of lubricating oil will rise sharply. When a large amount of lubricating oil flows rapidly through the oil-water separator, a large pressure difference and impact force will be generated, resulting in a high pressure and high impact working environment. Secondly, the internal design of the filter element is also a key factor. In order to increase the filtration area, paper filter elements often adopt a folded or pleated design. However, under the conditions of high pressure and high flow, this design will increase the impact and pressure on the filter element. Furthermore, when there are more impurities and water in the lubricating oil, they will cause greater resistance when passing through the filter element, thereby increasing the pressure inside the oil-water separator. Especially when the filter element has been used for a long time, the accumulation of impurities and water will further increase the internal resistance, exacerbating the high pressure and high impact working conditions. In addition, the oil-water separator is often in a high temperature working environment. This high temperature mainly comes from the heat generated when the power machinery is running, or external environmental factors (such as separating wastewater generated in the production process of petrochemicals, steel smelting, etc.). Paper filter elements need to be shaped with a setting agent during processing. When the ambient temperature exceeds 70°C, the paper filter elements begin to deform. The deformed paper filter elements will change their originally designed structure, affecting the pore size and fluid dynamics characteristics, thereby reducing the filtration efficiency.

[0005] In such an environment of high pressure, high impact, high temperature and long-term water immersion, the durability of paper filter elements will be seriously affected. Paper materials themselves have relatively weak resistance to water, and long-term water immersion will gradually soften and damage them. At the same time, under the continuous high pressure, high impact and high temperature, paper filter elements are prone to tearing, deformation and other problems, which will greatly reduce their filtering effect. Once these damaged filter elements cannot filter effectively, impurities and moisture will enter the mechanical lubrication system with the lubricating oil, causing serious damage to the operating parts, and ultimately affecting the service life of the power machinery. Utility Model Content

[0006] The purpose of the utility model is to provide an oil-water separator, which adopts a stable skeleton design to provide rigid support for the hydrophobic net and absorbent cloth stacked thereon, thereby significantly enhancing the high pressure resistance and impact resistance of the filter element. At the same time, the absorbent cloth has excellent high temperature resistance under high temperature conditions, is not easy to deform, and does not need to use a setting agent, thereby ensuring that the oil-water separator has excellent durability and meets the needs of long-term stable operation.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] 1. An oil-water separator as claimed in claim 1, comprising a shell and a filter element assembly installed inside the shell; the shell is provided with an oil inlet hole and an oil outlet hole, and a water accumulation chamber is provided at the bottom of the shell; the filter element assembly comprises a filter element, an upper end cover and a lower end cover, and the upper end cover and the lower end cover are respectively fixedly connected to the upper and lower ends of the filter element; the filter element comprises a plurality of filter element units, the filter element units are cylindrical, and the plurality of filter element units are coaxially spaced from outside to inside, a pre-filter chamber is formed between the outermost filter element unit and the shell, a separation chamber is formed between adjacent filter element units, and an output chamber is formed inside the innermost filter element unit; the pre-filter chamber is communicated with the oil inlet hole and the water accumulation chamber respectively, the separation chamber is communicated with the water accumulation chamber, and the output chamber is communicated with the oil outlet hole; the filter element unit comprises a skeleton, a hydrophobic net and a water-absorbing cloth which are sequentially stacked from inside to outside, and water-permeable holes are evenly distributed on the skeleton.

[0009] After the lubricating oil containing impurities and water enters the pre-filter chamber, it will be filtered through multiple filter units in sequence and finally discharged from the output chamber. In each filter unit, the lubricating oil will be processed, and the particulate impurities will be intercepted by the absorbent cloth, while the absorbent cloth absorbs the fine emulsified water. These waters are blocked when passing through the hydrophobic net, and gradually gather and grow to form water droplets, and finally, together with the impurities, pass through the pre-filter chamber or separation chamber and are deposited in the water accumulation chamber at the bottom of the housing. After being filtered by multiple filter units, the impurities and water in the lubricating oil are intercepted, absorbed, and settled layer by layer, so as to obtain high-purity lubricating oil.

[0010] By means of the above technical solution, the technical solution provided by the utility model has at least the following advantages:

[0011] (1) The skeleton provides a stable and rigid support for the hydrophobic net and absorbent cloth stacked thereon. Its cylindrical design significantly reduces stress concentration, thereby greatly improving the high pressure and impact resistance of the filter element. Compared with paper filter elements with folded or pleated designs, the absorbent cloth of the filter element of the utility model does not require the use of a setting agent and is not easily deformed even under high temperature conditions, which significantly improves the high temperature resistance. Therefore, the durability of the oil-water separator of the utility model is significantly enhanced.

[0012] (2) The lubricating oil can be filtered in multiple stages by coaxially spaced filter elements arranged from the outside to the inside. This design not only makes full use of the space inside the housing, effectively increases the filtering area, and thus improves the filtering efficiency, but also each filter element unit can efficiently and thoroughly filter impurities or pollutants of a specific size. This step-by-step filtering method can gradually remove particles of different sizes in the lubricating oil, ensuring that the lubricating oil that finally flows out is purer. In addition, this design can better cope with changes in flow rate and impurity load. Even when the flow rate increases or the impurity load increases, the step-by-step action of multiple filter elements can maintain a stable filtering effect, thereby enhancing the stability and reliability of the oil-water separator. At the same time, this structure also disperses the filtering burden of a single filter element unit, effectively extending its service life.

[0013] Furthermore, the housing includes an upper housing and a lower housing, the upper housing is connected to the lower housing through a threaded stop structure, and an O-ring is provided at the connection between the upper housing and the lower housing. The housing adopts a detachable subassembly design, abandoning the overall packaging method of the traditional metal housing. This improvement means that when the filter element assembly reaches its service life, the user only needs to simply replace the filter element assembly, and the sturdy and durable housing can continue to be used. This not only significantly reduces the replacement cost, but also reduces the generation of solid waste, thereby reducing the burden of environmental governance.

[0014] Furthermore, the lower end cover is provided with a plurality of drainage holes, and the plurality of separation chambers are respectively connected with the water accumulation chamber through the plurality of drainage holes.

[0015] Furthermore, a positioning protrusion extending downward is provided on the top of the housing, and the filter element assembly also includes a positioning spring; the positioning protrusion is tightly inserted into the upper end cover, and the positioning spring is compressed between the lower end cover and the bottom of the housing.

[0016] Furthermore, a water level sensor for detecting the water level inside the water chamber is provided in the water chamber.

[0017] Furthermore, the upper end cover and the lower end cover are both detachably connected to the filter element. With this technical solution, each filter element unit can be replaced independently, which greatly reduces maintenance costs.

[0018] Furthermore, the filter element includes four filter element units.

[0019] The utility model also provides a multi-connected oil-water separation device, including a base and the above-mentioned oil-water separator, the oil-water separator is fixedly installed on the base; the base includes a base body, an input main pipe, an output main pipe and a connecting unit, the input main pipe and the output main pipe are both fixedly arranged on the base body; the connecting unit corresponds to a plurality of the oil-water separators respectively, the connecting unit includes an input branch pipe and an output branch pipe, the input main pipe is connected to the oil inlet through the input branch pipe, and the oil outlet is connected to the output main pipe through the output branch pipe. The multi-connected oil-water separation device of the utility model can meet the oil-water separation efficiency requirements of the heavy-duty engine lubricating oil under a large flow state by installing a plurality of oil-water separators in parallel on the base.

[0020] Furthermore, the connecting unit also includes a connecting flange, a connector and a sealing ring, the connecting flange and the shell are respectively threadedly connected to the two ends of the connector, and the sealing ring is arranged between the connecting flange and the upper end of the shell; an input cavity is formed between the connecting flange and the shell, and the input branch pipe is connected to the oil inlet hole through the input cavity; an output channel is provided on the connector, and the oil outlet hole is connected to the output branch pipe through the output channel.

[0021] Furthermore, the number of the oil-water separators is four, and the four oil-water separators are distributed in a rectangular array. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the main cross-sectional view of the oil-water separator in Example 1.

[0023] Figure 2 for Figure 1 A partial enlarged view of part A in the middle.

[0024] Figure 3 For along Figure 1 Cross-sectional view along the BB axis.

[0025] Figure 4 It is a three-dimensional diagram of the multi-connected oil-water separation device in Example 2.

[0026] Figure 5 A top view of the multi-connected oil-water separation device in Example 2

[0027] Figure 6 For along Figure 5Sectional view along CC direction.

[0028] Wherein: 1- oil inlet hole, 2- oil outlet hole, 3- water accumulation chamber, 4- upper end cover, 5- lower end cover, 6- filter element unit, 7- pre-filter chamber, 8- separation chamber, 9- output chamber, 10- skeleton, 11- hydrophobic net, 12- absorbent cloth, 13- water permeable hole, 14- upper shell, 15- lower shell, 16- O-ring, 17- drain hole, 18- positioning protrusion, 19- positioning spring, 20- water level sensor, 21- seat body, 22- input main pipe, 23- output main pipe, 24- input branch pipe, 25- output branch pipe, 26- connecting flange, 27- connector, 28- sealing ring, 29- input chamber, 30- output channel. DETAILED DESCRIPTION

[0029] The utility model relates to an oil-water separator, which significantly improves durability, stability and filtering efficiency through innovative design and structural optimization. The filter element adopts a cylindrical design, with a skeleton to provide stable support, which reduces stress concentration and enhances high pressure resistance and impact resistance. At the same time, multiple filter element units coaxially arranged from outside to inside are used to achieve multi-stage filtration, which not only increases the filtration area and improves the filtration efficiency, but also removes impurity particles of different sizes step by step to ensure that the lubricating oil is purer. This design can effectively cope with changes in flow and impurity load, maintain a stable filtering effect, and extend the service life of the filter element, thereby greatly improving the overall performance of the oil-water separator.

[0030] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] Example 1

[0032] Figure 1 to Figure 3 Embodiment 1 of the present utility model is shown.

[0033] This embodiment provides an oil-water separator, including a housing and a filter element assembly installed inside the housing.

[0034] The housing includes an upper housing 14 and a lower housing 15, wherein the upper housing 14 and the lower housing 15 are connected by a threaded stop structure, and an O-ring 16 is provided at the connection between the upper housing 14 and the lower housing 15. The housing adopts a detachable subassembly design, abandoning the overall packaging method of the traditional metal housing. This improvement means that when the filter element assembly reaches its service life, the user only needs to simply replace the filter element assembly, and the sturdy and durable housing can continue to be used. This not only significantly reduces the replacement cost, but also reduces the generation of solid waste, thereby reducing the burden of environmental governance.

[0035] An oil outlet hole 2 is provided at the center of the upper shell 14 , and a plurality of oil inlet holes 1 are provided on the upper shell 14 along the same circumferential direction. The oil inlet holes 1 and the oil outlet holes 2 are used for input and output of lubricating oil, respectively.

[0036] The bottom of the lower shell 15 is designed with a water chamber 3, and the water chamber 3 is specially equipped with a water level sensor 20 to monitor the water level in real time. This design is intended to ensure that the oil-water separator can remove the accumulated water in time.

[0037] The filter element assembly comprises a filter element, an upper end cover 4 , a lower end cover 5 and a positioning spring 19 .

[0038] like Figure 1 , Figure 3 As shown, the filter element includes four filter element units 6, the filter element units 6 are cylindrical, and the four filter element units 6 are coaxially spaced from outside to inside, a pre-filter chamber 7 is formed between the outermost filter element unit 6 and the housing, a separation chamber 8 is formed between adjacent filter element units 6, and an output chamber 9 is formed inside the innermost filter element unit 6. The pre-filter chamber 7 is communicated with the oil inlet hole 1 and the water accumulation chamber 3 respectively, and the output chamber 9 is communicated with the oil outlet hole 2.

[0039] like Figure 2 As shown, the filter element unit 6 includes a frame 10 , a hydrophobic net 11 and a water-absorbent cloth 12 which are stacked in sequence from the inside to the outside, and water-permeable holes 13 are evenly distributed on the frame 10 .

[0040] The upper end cover 4 and the lower end cover 5 are detachably fixedly connected to the upper and lower ends of the filter element. Specifically, in this embodiment, the upper end cover 4 and the lower end cover 5 are each provided with four annular slots, and the four filter element units are respectively tightly inserted into the four annular slots.

[0041] The lower end cover is provided with three groups of drainage holes 17 , and the three separation chambers 8 are connected with the water accumulation chamber 3 through the three groups of drainage holes 17 .

[0042] A downwardly extending positioning protrusion 18 is provided at the top center of the upper shell 14, and the positioning protrusion 18 is tightly inserted into the upper end cover 4. The positioning spring 19 is compressed between the lower end cover 5 and the bottom of the lower shell 15 to ensure that the filter element assembly is firmly installed in the housing.

[0043] The shell is made of ADC12 aluminum alloy, which is also called No. 12 aluminum or Al-Si-Cu alloy. It is a die-cast aluminum alloy, the main components of which include aluminum, silicon, copper and other elements, and also contains a small amount of other elements such as magnesium, manganese, zinc, iron and titanium. ADC12 aluminum alloy has good mechanical properties, processing properties, corrosion resistance and thermal conductivity.

[0044] The upper end cover 4, the lower end cover 5 and the frame 10 are all made of PA66+GF, which is a polyamide 66 glass fiber composite material. This material is made by adding glass fiber (GF) to PA66, combining the advantages of both PA66 and glass fiber. PA66+GF has high strength, high stiffness, good heat resistance and dimensional stability. The addition of glass fiber significantly improves the mechanical properties, heat resistance and dimensional stability of PA66 material, enabling it to maintain good performance under high temperature and stress environment. In addition, PA66+GF also has low hygroscopicity, so its dimensional stability is relatively good and is less affected by humidity changes.

[0045] The hydrophobic net 11 is made of hydrophobic materials, which are materials that can repel water molecules and prevent them from attaching to the surface of the material. Hydrophobic materials cover a variety of types, including conventional hydrophobic nonwoven materials and those treated with hydrophobic finishing agents. Conventional hydrophobic nonwoven materials include: polypropylene, polyester, hydrophobic ES or SMS composite materials, and similar two-component nonwoven materials. The types of hydrophobic finishing agents include but are not limited to fluorine-containing resins, quaternary ammonium salts containing long chains of aliphatic hydrocarbons, and polysiloxanes.

[0046] The absorbent fabric 12 is made of hydrophilic material, which refers to a material with strong affinity for water, which can quickly spread and evenly absorb water on its surface. There are many types of hydrophilic nonwoven materials with excellent water absorption performance, including but not limited to cotton, viscose and hydrophilic ES, as well as similar two-component nonwoven materials.

[0047] After the lubricating oil containing impurities and water enters the pre-filter chamber 7, it will be filtered through four filter units 6 in sequence and finally discharged from the output chamber 9. In each filter unit 6, the lubricating oil will be processed, and the particulate impurities will be intercepted by the absorbent cloth 12, while the absorbent cloth 12 absorbs the fine emulsified water. These waters are blocked when passing through the hydrophobic net 11, and gradually gather and grow to form water droplets, and finally pass through the pre-filter chamber 7 or the separation chamber 8 together with the impurities and are deposited in the water accumulation chamber 3 at the bottom of the housing. After being filtered by the four filter units 6, the impurities and water in the lubricating oil are intercepted, absorbed, and settled layer by layer, so as to obtain high-purity lubricating oil.

[0048] By means of the above technical solution, the technical solution provided by this embodiment has at least the following advantages:

[0049] (1) The skeleton 10 provides a stable rigid support for the hydrophobic net 11 and the absorbent cloth 12 stacked thereon. Its cylindrical design significantly reduces stress concentration, thereby greatly improving the high pressure and impact resistance of the filter element. Compared with the paper filter element with a folded or pleated design, the absorbent cloth 12 of the filter element of this embodiment does not need to use a setting agent and is not easy to deform even under high temperature conditions, which significantly improves the high temperature resistance. Therefore, the durability of the oil-water separator of this embodiment is significantly enhanced.

[0050] (2) The lubricating oil can be filtered in multiple stages by means of four filter units 6 arranged coaxially and spaced from the outside to the inside. This design not only makes full use of the space inside the housing, effectively increases the filtering area, and thus improves the filtering efficiency, but also each filter unit 6 can efficiently and thoroughly filter impurities or pollutants of a specific size. This step-by-step filtering method can gradually remove particles of different sizes in the lubricating oil, ensuring that the lubricating oil that finally flows out is purer. In addition, this design can better cope with changes in flow rate and impurity load. Even when the flow rate increases or the impurity load increases, the step-by-step action of the four filter units 6 can maintain a stable filtering effect, thereby enhancing the stability and reliability of the oil-water separator. At the same time, this structure also disperses the filtering burden of a single filter unit 6, effectively extending its service life.

[0051] Example 2

[0052] Figures 4 to 6 Embodiment 2 of the present utility model is shown.

[0053] This embodiment provides a multi-connected oil-water separation device, including a base and four oil-water separators as described in Example 1.

[0054] The oil-water separator is fixedly mounted on the base. Figure 5 As shown, the four oil-water separators are distributed in a rectangular array.

[0055] The base includes a base body 21, an input manifold 22, an output manifold 23 and a connecting unit.

[0056] The seat body 21 is used for the multi-connected oil-water separation device to be installed as a whole on a power machine, and the input manifold 22 and the output manifold 23 are both fixedly arranged on the seat body 21 .

[0057] like Figure 2As shown, the four connection units correspond to the four oil-water separators respectively. The connection unit includes an input branch pipe 24, an output branch pipe 25, a connection flange 26, a connector 27 and a sealing ring 28. The two ends of the input branch pipe 24 are fixedly connected to the input main pipe 22 and the connection flange 26 respectively, and the two ends of the output branch pipe 25 are fixedly connected to the output main pipe 23 and the connection flange 26 respectively. The connection flange 26 and the upper shell 14 are threadedly connected to the two ends of the connector 27 respectively, and the sealing ring 28 is arranged between the connection flange 26 and the upper end of the shell. An input cavity 29 is formed between the connection flange 26 and the upper shell 14, and the input main pipe 22 is connected to the oil inlet hole 1 through the input branch pipe 24 and the input cavity 29 in turn. The connector 27 is provided with an output channel 30, and the oil outlet hole 2 is connected to the output main pipe 23 through the output channel 30 and the output branch pipe 25 in turn.

[0058] The material of the seat body 21 is Q235. The materials of the input main pipe 22, the output main pipe 23, the input branch pipe 24, the output branch pipe 25, the connecting flange 26 and the connector 27 are all 45# steel.

[0059] The multi-connected oil-water separation device provided in this embodiment can meet the oil-water separation efficiency requirements of heavy-duty engine lubricating oil under large flow conditions by installing four oil-water separators in parallel on a base, and its rated flow rate reaches 190L / min.

Claims

1. An oil-water separator, characterized in that: The invention comprises a housing and a filter element assembly installed inside the housing; the housing is provided with an oil inlet hole (1) and an oil outlet hole (2), and the bottom of the housing is provided with a water accumulation chamber (3); the filter element assembly comprises a filter element, an upper end cover (4) and a lower end cover (5), and the upper end cover (4) and the lower end cover (5) are respectively fixedly connected to the upper and lower ends of the filter element; the filter element comprises a plurality of filter element units (6), the filter element units (6) are cylindrical, and the plurality of filter element units (6) are coaxially spaced from outside to inside, and a space between the outermost filter element unit (6) and the housing is formed. A pre-filter chamber (7) is formed, a separation chamber (8) is formed between adjacent filter element units (6), and an output chamber (9) is formed inside the innermost filter element unit (6); the pre-filter chamber (7) is communicated with the oil inlet hole (1) and the water accumulation chamber (3) respectively, the separation chamber (8) is communicated with the water accumulation chamber (3), and the output chamber (9) is communicated with the oil outlet hole (2); the filter element unit (6) comprises a skeleton (10), a hydrophobic net (11) and a water-absorbent cloth (12) which are stacked in sequence from the inside to the outside, and the skeleton (10) is evenly distributed with water-permeable holes (13).

2. The oil-water separator according to claim 1, characterized in that: The housing comprises an upper shell (14) and a lower shell (15); the upper shell (14) and the lower shell (15) are connected via a threaded stop structure; an O-ring (16) is provided at the connection between the upper shell (14) and the lower shell (15).

3. The oil-water separator according to claim 1, characterized in that: The lower end cover is provided with a plurality of groups of drainage holes (17), and the plurality of separation chambers (8) are respectively connected to the water accumulation chamber (3) through the plurality of groups of drainage holes (17).

4. The oil-water separator according to claim 1, characterized in that: The top of the shell is provided with a positioning protrusion (18) extending downward, and the filter element assembly also includes a positioning spring (19); the positioning protrusion (18) is tightly inserted into the upper end cover (4), and the positioning spring (19) is pressed between the lower end cover (5) and the bottom of the shell.

5. The oil-water separator according to claim 1, characterized in that: The water accumulation chamber (3) is provided with a water level sensor (20) for detecting the water level inside the water accumulation chamber (3).

6. The oil-water separator according to claim 1, characterized in that: The upper end cover (4) and the lower end cover (5) are both detachably connected to the filter element.

7. The oil-water separator according to claim 1, characterized in that: The filter element comprises four filter element units (6).

8. A multi-connected oil-water separation device, characterized in that: The invention comprises a base and a plurality of oil-water separators as claimed in any one of claims 1 to 7, wherein the oil-water separators are fixedly mounted on the base; the base comprises a base body (21), an input main pipe (22), an output main pipe (23) and a connecting unit, wherein the input main pipe (22) and the output main pipe (23) are both fixedly arranged on the base body (21); the connecting unit corresponds to the plurality of oil-water separators respectively, and comprises an input branch pipe (24) and an output branch pipe (25), wherein the input main pipe (22) is connected to an oil inlet (1) through the input branch pipe (24), and the oil outlet (2) is connected to the output main pipe (23) through the output branch pipe (25).

9. The multi-connected oil-water separation device according to claim 8, characterized in that: The connection unit further comprises a connection flange (26), a connector (27) and a sealing ring (28); the connection flange (26) and the housing are respectively threadedly connected to two ends of the connector (27); the sealing ring (28) is arranged between the connection flange (26) and the upper end of the housing; an input cavity (29) is formed between the connection flange (26) and the housing, and the input branch pipe (24) is communicated with the oil inlet hole (1) through the input cavity (29); the connector (27) is provided with an output channel (30), and the oil outlet hole (2) is communicated with the output branch pipe (25) through the output channel (30).

10. The multi-connected oil-water separation device according to claim 8, characterized in that: The number of the oil-water separators is four, and the four oil-water separators are distributed in a rectangular array.

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