Oil-water separator and vacuum pump

Abstract

The utility model provides an oil-water separator and a vacuum pump, belongs to the technical field of vacuum pumps, and aims to solve the problem of high water content in pump oil. The oil-water separator comprises an oil cup and a driving assembly. The oil cup comprises a cup base, a cup cover and a filter element. The cup cover is made of transparent materials and is arranged on the cup base in a buckled mode, and a sealed containing space is formed between the cup base and the cup cover. The filter element is arranged in the containing space. The filter element divides the containing space into a first containing cavity and a second containing cavity. The first containing cavity is located in the filter element. The second containing cavity is located between the filter element and the cup cover. And the cup base is provided with an oil inlet and a water outlet. An oil outlet is formed in the top of the cup cover. The oil inlet is communicated with the first containing cavity. The bottom of the second containing cavity communicates with the water outlet. And the top of the second accommodating cavity is communicated with the oil discharge outlet. The output end of the driving assembly is connected to the oil inlet. The pump oil can flow into the first containing cavity through the oil inlet under the action of the driving assembly. The oil-water separator is simple in structure and convenient to move and use.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of vacuum pump, concretely relates to an oil-water separator and vacuum pump. BACKGROUND

[0002] The oil seal mechanical pump is sealed, lubricated and cooled by pump oil, and is widely applied due to stable performance. The oil seal mechanical pump with air regulating device can be used to remove gas with a small amount of water vapor. If used to remove a large amount of water vapor, water will condense in the pump oil and is not easy to remove, which not only affects the pumping performance of the vacuum pump, but also causes the pump oil to be emulsified, thereby causing the pump oil to be frequently replaced and increasing the use cost. In order to make the oil seal mechanical pump be used to remove gas containing a large amount of water vapor, the pump oil must be separated from water, that is, the pump oil containing water is removed from the vacuum pump oil tank, and after separation, the clean oil is returned to the vacuum pump oil tank, and the filtered waste water is discharged. The existing oil-water separation technology is mostly complex in structure, large in size, large in oil consumption, high in cost and inconvenient to use. SUMMARY

[0003] Therefore, the utility model wants to solve the technical problem in providing an oil-water separator and vacuum pump, which can separate the water mixed in the vacuum pump oil, and also filter out the impurities such as particulate matter in the pump oil, so that the vacuum pump can be used to remove gas containing a large amount of water vapor.

[0004] In order to solve the above problems, the utility model provides an oil-water separator, which comprises an oil cup and a driving assembly. The oil cup comprises a cup seat, a cup cover and a filter element. The cup cover is of transparent material and is buckled on the cup seat to form a sealed containing space between the cup seat and the cup cover. The filter element is arranged in the containing space. The filter element divides the containing space into a first containing cavity and a second containing cavity. The first containing cavity is located inside the filter element. The second containing cavity is located between the filter element and the cup cover. The cup seat is provided with an oil inlet and a water outlet. The top of the cup cover is provided with an oil outlet. The oil inlet is communicated with the first containing cavity. The bottom of the second containing cavity is communicated with the water outlet. The top of the second containing cavity is communicated with the oil outlet. The output end of the driving assembly is connected to the oil inlet. The pump oil can flow into the first containing cavity through the oil inlet under the action of the driving assembly.

[0005] Optionally, the oil cup further comprises a shunt column. The shunt column is connected between the top of the filter element and the cup cover. The top of the shunt column is provided with a groove. The groove buckles the oil outlet inside. A plurality of small holes are arranged on the side surface of the shunt column along the circumferential direction of the shunt column. The small holes are close to the top of the shunt column and communicated with the groove.

[0006] Optionally, the driving assembly comprises a speed reducer, a shaft coupling and a gear pump. The output shaft of the speed reducer is connected to the gear pump through the shaft coupling. The gear pump comprises a liquid inlet and a liquid outlet. The liquid inlet is used to connect the vacuum pump. The liquid outlet is connected to the oil inlet of the oil cup.

[0007] Optionally, the deceleration motor, the shaft coupling and the gear pump are stacked from top to bottom.

[0008] Optionally, the oil-water separator further comprises a pressure gauge. The pressure gauge is connected to the driving assembly. The pressure gauge is used to obtain the oil inlet pressure of the oil cup.

[0009] Optionally, the oil-water separator further comprises a three-way joint. An input end of the three-way joint is connected to an output end of the driving assembly. One output end of the three-way joint is connected to the oil inlet of the oil cup through a first hose. The other output end of the three-way joint is connected to the pressure gauge through a second hose.

[0010] Optionally, the oil-water separator further comprises a housing. The housing is used to accommodate the oil cup and the driving assembly. The housing is provided with heat dissipation holes. The top of the housing is provided with a handle. The bottom of the housing is provided with a foot.

[0011] Optionally, the housing is provided with an observation window and a fan. The observation window is located on the side of the housing close to the oil cup. The fan is located on the side of the housing close to the driving assembly.

[0012] The utility model further provides a kind of vacuum pump, comprising: vacuum pump body and above-mentioned oil-water separator. The vacuum pump body is provided with pump oil discharge port and pump oil inlet. Pump oil discharge port is connected to the input end of the driving assembly. The oil outlet of the oil cup is connected to the pump oil inlet by connecting pipeline.

[0013] Optionally, the vacuum pump body further comprises a filter assembly. The filter assembly includes an oil primary filter, an oil filter joint, a transition joint, a ball valve and a quick plug joint. The inlet of the oil primary filter is connected to the pump oil discharge port through the oil filter joint. The outlet of the oil primary filter is connected to the input end of the ball valve through the transition joint. The output end of the ball valve is connected to the input end of the driving assembly through the quick plug joint.

[0014] Beneficial effects

[0015] 1. The oil-water separator comprises an oil cup and a driving assembly. The driving assembly is used for connecting between the vacuum pump and the oil inlet of the oil cup. The pump oil in the vacuum pump can enter the first accommodating cavity in the filter element under the action of the driving assembly. After the pump oil in the first accommodating cavity is filtered by the filter element, the pump oil enters the second accommodating cavity between the filter element and the cup cover. The particulate impurities in the pump oil are left in the first accommodating cavity in the filter element. Due to the different densities of oil and water, the pump oil in the second accommodating cavity between the filter element and the cup cover can be separated into oil and water, that is, the oil is above the water. With the increase of the pressure in the oil cup, the oil in the upper layer can be discharged through the oil discharge port and returned to the vacuum pump, and the water in the lower layer is discharged through the water discharge port, so that the oil-water separation and recycling of the pump oil are realized. The cup cover of the utility model is made of transparent material, so that the liquid level of oil and water and the pollution condition of the filter element can be observed, and the filter element can be replaced in time. The oil-water separator is simple in structure, convenient to move and easy to use.

[0016] 2. The vacuum pump comprises a vacuum pump body and the oil-water separator, can realize real-time purification and oil-water separation of pump oil, and is suitable for pumping out gas with high water vapor content. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 1 is a schematic view of the internal structure of the oil-water separator of an embodiment of the utility model;

[0018] Figure 2 FIG. 2 is a schematic view of the internal structure of the back of the oil-water separator of an embodiment of the utility model;

[0019] Figure 3 FIG. 3 is a schematic view of the structure of the oil cup of an embodiment of the utility model;

[0020] Figure 4 FIG. 4 is a schematic view of the structure of the vacuum pump of an embodiment of the utility model.

[0021] The signs in the drawings represent:

[0022] 1. Oil cup; 2. Water discharge port joint; 3. Connection pipeline joint; 4. Liquid inlet; 5. Gear pump; 6. Coupling; 7. Speed reducer motor; 8. Shell; 9. Fan; 10. Handle; 11. Pressure gauge; 12. Radiating hole; 13. Foot; 14. Three-way joint; 15. First hose; 16. Oil inlet joint; 17. Second hose; 18. Connection pipeline;

[0023] 801. Observation window;

[0024] 101. Cup seat; 102. Cup cover; 103. Split column; 104. Filter element;

[0025] 1011, oil inlet; 1012, drain outlet;

[0026] 1021, sealing ring; 1022, oil drain port;

[0027] 1031, small hole; 1032, groove;

[0028] 1041, filter element sealing gasket;

[0029] a. Oil-water separator; b. Primary oil filter; c. Oil filter joint; d. Sealing gasket; e. Transition joint; f. Ball valve; g. Quick connector; h. Vacuum pump body; h1. Pump oil inlet; h2. Pump oil outlet. DETAILED DESCRIPTION

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0032] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0033] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0034] In a first aspect, this embodiment provides an oil-water separator a. Figure 1 This is a schematic diagram of the internal structure of an oil-water separator provided in this embodiment. Figure 2 This is a schematic diagram of the internal structure of the back side of an oil-water separator provided in this embodiment. Figure 3 This is a schematic structural diagram of an oil cup according to an embodiment of the present invention.

[0035] like Figures 1 to 3 As shown, the oil-water separator a of this embodiment includes an oil cup 1 and a drive assembly. The oil cup 1 includes a cup holder 101, a cup cover 102, and a filter element 104. The cup cover 102 is made of transparent material and is buckled onto the cup holder 101, forming a sealed storage space between the cup holder 101 and the cup cover 102. The filter element 104 is disposed in the storage space. The filter element 104 divides the storage space into a first storage chamber and a second storage chamber. The first storage chamber is located inside the filter element 104. The second storage chamber is located between the filter element 104 and the cup cover 102. The cup holder 101 is provided with an oil inlet 1011 and a drain port 1012. The top of the cup cover 102 is provided with an oil drain port 1022. The oil inlet 1011 is connected to the first storage chamber. The bottom of the second storage chamber is connected to the drain port 1012. The top of the second storage chamber is connected to the oil drain port 1022. The output end of the drive assembly is connected to the oil inlet 1011. The pump oil can flow into the first accommodating chamber through the oil inlet 1011 under the action of the driving assembly.

[0036] In some embodiments, as Figure 3 As shown, the cup cover 102 and the cup holder 101 are connected by threads to facilitate the removal of the cup cover 102, thereby facilitating the cleaning of the interior of the oil cup 1 and the replacement of the filter element 104. In order to further ensure the sealing of the connection between the cup cover 102 and the cup holder 101, a sealing ring 1021 is also provided at the connection between the cup cover 102 and the cup holder 101.

[0037] In some examples, such as Figure 3 As shown, the filter element 104 is cylindrical and removably fixed to the cup holder 101. The filter element 104 is connected to the oil inlet 1011. Pump oil can enter the first receiving chamber (i.e., the interior of the filter element 104) through the oil inlet 1011. After being filtered by the filter element 104, it enters the second receiving chamber (i.e., between the filter element 104 and the cup cover 102). To ensure a tight seal between the filter element 104 and the cup holder 101, a filter element sealing gasket 1041 is provided at the connection between the bottom of the filter element 104 and the cup holder 101.

[0038] The oil-water separator a of the embodiment comprises an oil cup 1 and a driving assembly. The driving assembly is connected between a vacuum pump and an oil inlet 1011 of the oil cup 1, and pump oil in the vacuum pump can enter a first containing cavity in the filter element 104 under the action of the driving assembly; after the pump oil in the first containing cavity is filtered through the filter element 104, the pump oil enters a second containing cavity between the filter element 104 and the cup cover 102, and particulate impurities in the pump oil are left in the first containing cavity in the filter element 104. Due to the different densities of oil and water, the pump oil in the second containing cavity between the filter element 104 and the cup cover 102 can be separated into oil and water, that is, the oil is above the water. As the pressure in the oil cup 1 increases, the oil in the upper layer can be discharged through the oil outlet 1022 and returned to the vacuum pump, and the water in the lower layer is discharged through the water outlet 1012, so that the oil-water separation and recycling of the pump oil are realized. The cup cover 102 of the utility model is of transparent material, which facilitates the observation of the liquid level of oil and water and the pollution condition of the filter element, so that the filter element 104 can be replaced in time. The oil-water separator a of the utility model has the advantages of simple structure, easy movement and convenient use.

[0039] In some embodiments, as shown in Figure 3 The oil cup 1 further comprises a shunt column 103. The shunt column 103 is connected between the top of the filter element 104 and the cup cover 102. The top of the shunt column 103 is provided with a groove 1032. The groove 1032 buckles the oil outlet 1022. On the side surface of the shunt column 103, a plurality of small holes 1031 are arranged along the circumference of the shunt column 103. The small holes 1031 are close to the top of the shunt column 103 and communicate with the groove 1032.

[0040] In some examples, as shown in Figure 3 The shunt column 103 is connected between the top of the filter element 104 and the cup cover 102 and blocks the opening at the top of the filter element 104. In order to ensure the sealing performance of the connection between the shunt column 103 and the filter element 104, a filter element sealing gasket 1041 is also arranged between the top of the filter element 104 and the shunt column 103.

[0041] The oil cup 1 of the embodiment further comprises a shunt column 103. The pump oil in the second containing cavity (that is, between the filter element 104 and the cup cover 102) will be separated into oil and water due to the different densities of oil and water, that is, the oil is above the water. The pump oil in the upper layer can enter the groove 1032 through the plurality of small holes 1031 on the circumference of the shunt column 103, and the pump oil entering the groove 1032 can return to the vacuum pump through the oil outlet 1022. By arranging the shunt column 103, the pump oil in the upper layer can be smoothly returned to the vacuum pump, and the water in the lower layer is prevented from flowing back to the vacuum pump.

[0042] In some embodiments, as shown in Figure 1As shown, the drive assembly includes a reduction motor 7, a coupling 6, and a gear pump 5. The output shaft of the reduction motor 7 is connected to the gear pump 5 via the coupling 6. The gear pump 5 includes a liquid inlet 4 and a liquid outlet. The liquid inlet 4 is used to connect to a vacuum pump. The liquid outlet is connected to the oil inlet connector 16 on the oil inlet 1011 of the oil cup 1.

[0043] The drive assembly of this embodiment includes a reduction motor 7, a coupling 6, and a gear pump 5. During operation, the reduction motor 7 drives the gear pump 5 to rotate through the coupling 6, sucking the pump oil in the vacuum pump from the liquid inlet 4 into the gear pump 5 and then into the oil cup 1 from the liquid outlet, achieving circulation, dehydration, and repeated use of the pump oil.

[0044] In some embodiments, as Figure 1 and Figure 2 As shown, the reduction motor 7, the coupling 6 and the gear pump 5 are stacked in sequence from top to bottom.

[0045] In this embodiment, the reduction motor 7, the coupling 6 and the gear pump 5 are stacked sequentially from top to bottom, and the spatial arrangement is more reasonable, which is conducive to reducing the volume of the oil-water separator a.

[0046] In some embodiments, as Figure 1 As shown, the oil-water separator a further includes a pressure gauge 11. The pressure gauge 11 is connected to the drive assembly. The pressure gauge 11 is used to obtain the oil inlet pressure of the oil cup 1.

[0047] This embodiment is capable of monitoring the working status of the filter element 104 in real time by setting a pressure gauge 11 to obtain the oil inlet pressure of the oil cup 1. When the pressure of the pressure gauge 11 increases, it indicates that the filter element 104 is clogged and needs to be removed, cleaned, or replaced in time.

[0048] In some embodiments, as Figure 1 and Figure 2 As shown, the oil-water separator a also includes a three-way connector 14. The input end of the three-way connector 14 is connected to the output end of the drive assembly. One output end of the three-way connector 14 is connected to the oil inlet 1011 of the oil cup 1 via a first hose 15. The other output end of the three-way connector is connected to the pressure gauge 11 via a second hose 17.

[0049] The input end of the tee connector 14 in this embodiment is connected to the discharge port of the gear pump 5. The reduction motor 7 drives the gear pump 5 to rotate through the coupling 6, drawing the pump oil from the vacuum pump into the gear pump 5 through the inlet 4. The oil then enters the input end of the tee connector 14 from the discharge port. The oil then flows from one output end of the tee connector 14 through the first hose 15 into the oil cup 1, and from the other output end of the tee connector 14 through the second hose 17 into the pressure gauge 11. This allows the pressure gauge 11 to obtain real-time information on the oil inlet pressure of the oil cup 1.

[0050] In some embodiments, as Figure 1And Figure 2 As shown in the figure, the oil-water separator a further comprises a housing 8. The housing 8 is used to accommodate the oil cup 1 and the driving assembly. The housing 8 is provided with heat dissipation holes 12. The top of the housing 8 is provided with a handle 10. The bottom of the housing 8 is provided with a foot 13.

[0051] In some examples, as shown in the figure, Figure 1 And Figure 2 As shown in the figure, the housing 8 is a cuboid, comprising a top plate, a bottom plate and side plates connected between the top plate and the bottom plate. The oil cup 1 and the driving assembly are arranged side by side in the housing 8 and are installed on the bottom plate. The heat dissipation holes 12 are arranged on the side plates of the front and rear sides.

[0052] In some examples, as shown in the figure, Figure 2 The foot 13 is made of rubber material, which has good shock absorption effect and is not easy to produce noise when moving.

[0053] The oil cup 1 and the driving assembly of the embodiment are integrated in the housing 8, which has compact structure, good integrity and is convenient to use.

[0054] In some embodiments, as shown in the figure, Figure 1 The housing 8 is provided with an observation window 801 and a fan 9. The observation window 801 is located on the side of the housing 8 close to the oil cup 1. The fan 9 is located on the side of the housing 8 close to the driving assembly.

[0055] In some examples, as shown in the figure, Figure 1 The observation window 801 is in the shape of a long strip and is located on the right side of the housing 8, corresponding to the position of the oil cup 1, so that the oil-water separation condition in the oil cup 1 can be directly observed through the observation window 801.

[0056] The embodiment is provided with the observation window 801 and the fan 9 on the housing 8, which can not only facilitate the observation of the condition of the oil cup 1 in the housing 8, but also can timely discharge the heat generated by the driving assembly.

[0057] The oil-water separator a of the present embodiment is described in detail above. The oil-water separator a of the present embodiment comprises an oil cup 1 and a driving assembly, both of which are integrated in a square-shaped housing 8. The side plates on the front and back of the housing 8 are provided with heat dissipation holes 12. The right side plate of the housing 8 is provided with a large, long observation window 801, through which the inside of the oil cup 1 can be clearly seen. The front side plate is externally provided with a drain port connector 2, a connecting pipeline connector 3, and a liquid inlet 4. The drain port 1012 is connected to the drain port connector 2, and the oil outlet 1022 is connected to the connecting pipeline connector 3 through the connecting pipeline 18. The drain port connector 2, the connecting pipeline connector 3, and the liquid inlet 4 are all provided with valves and quick connectors, through which hoses can be connected to connect a vacuum pump or a drain. The connecting pipeline connector 3 and the liquid inlet 4 are connected to the oil tank of the vacuum pump through the hoses, and the drain port connector 2 is used to drain the filtered waste water. The top of the housing 8 is provided with a handle 10, and the bottom is provided with a rubber footing 13, so that the oil-water separator a can be easily moved and placed on a suitable horizontal surface or table top.

[0058] In operation, the gear pump 5 is rotated by the deceleration motor 7 through the shaft coupling 6, and the vacuum pump oil is sucked into the gear pump 5 from the liquid inlet 4. The pump oil enters the oil cup 1 and the pressure gauge 11 from the three-way connector 14 at the discharge port of the gear pump 5. The oil cup 1 is composed of a cup seat 101, a cup cover 102, a flow dividing column 103, and a filter element 104. The cup cover 102 is made of transparent material and is connected to the cup seat 101 by threads and sealed by a sealing ring 1021. The pump oil enters the inside of the filter element 104 from the three-way connector 14 at the discharge port of the gear pump 5, through the first hose 15 and the oil inlet connector 16, and enters the space between the filter element 104 and the cup cover 102 after being filtered. Because the densities of oil and water are different, the pump oil is above the water, and the pump oil enters the top recess 1032 through the small holes 1031 on the flow dividing column 103, and then flows into the connecting pipeline 18 from the oil outlet 1022, and then returns to the oil tank of the vacuum pump through the connecting pipeline connector 3. The water is deposited at the bottom of the oil cup 1, and the valve at the drain port connector 2 is opened, so that the water can be drained from the drain port 1012 through the drain port connector 2. During operation, the pressure gauge 11 can display the oil pressure in the oil-water separator a. When the pressure rises, it indicates that the filter element 104 is contaminated, at which time the oil cup 1 can be opened, the filter element 104 can be removed, and the filter element 104 can be cleaned and dried and then put back into the oil cup.

[0059] The oil-water separator a of this embodiment can separate water mixed with vacuum pump oil and filter out impurities such as particulate matter in the pump oil, enabling the oil-sealed mechanical pump to be used to extract gases containing large amounts of water vapor. The oil-water separator a of this embodiment has a simple structure, with the oil cup 1, reduction motor 7, and gear pump 5 integrated into the housing 8. It is compact, lightweight, and easy to move. A large observation window 801 is provided on the side of the housing 8, through which the oil-water level in the oil cup 1 and the contamination of the filter element 104 can be observed. A pressure gauge 11 is provided on the top to monitor the oil inlet pressure. During operation, if the pressure gauge 11 displays a high pressure value, it indicates that the filter element 104 is clogged and needs to be cleaned. Unscrewing the oil cup 1 removes the filter element 104, which can be cleaned and dried for repeated use.

[0060] In a second aspect, this embodiment also provides a vacuum pump. Figure 4 This is a schematic diagram of the structural decomposition of a vacuum pump provided in this embodiment.

[0061] like Figure 4 As shown, the vacuum pump of this embodiment includes a vacuum pump body h and the aforementioned oil-water separator a. The vacuum pump body h is provided with an oil discharge port h2 and an oil inlet h1. The oil discharge port h2 is connected to the input of the drive assembly. The oil drain port 1022 of the oil cup 1 is connected to the oil inlet h1 via a connecting pipe 18.

[0062] The vacuum pump of this embodiment includes a vacuum pump body h and the aforementioned oil-water separator a. Driven by the gear pump 5, the pump oil in the vacuum pump body h can enter the gear pump 5 from the pump oil discharge port h2 through the liquid inlet 4, and then enter the oil cup 1 from the liquid discharge port through the oil inlet 1011 for filtration. After the filtered pump oil is separated from the oil and water, the oil is discharged through the oil discharge port 1022 and refluxed through the connecting pipe 18 to the pump oil injection port h1. The vacuum pump of this embodiment includes the vacuum pump body h and the aforementioned oil-water separator a, which can achieve real-time purification and oil-water separation of the pump oil and is suitable for extracting gases with high water vapor content.

[0063] In some embodiments, as Figure 4 As shown, the vacuum pump body h also includes a filter assembly. This filter assembly includes a primary oil filter b, an oil filter connector c, a transition connector e, a ball valve f, and a quick-connect connector g. The inlet of the primary oil filter b is connected to the pump oil discharge port h2 via the oil filter connector c. The outlet of the primary oil filter b is connected to the input of the ball valve f via the transition connector e. The output of the ball valve f is connected to the input of the drive assembly via the quick-connect connector g.

[0064] This embodiment further includes three sealing gaskets d, which are respectively arranged between the oil filter joint c and the pump oil discharge port h2, between the transition joint e and the ball valve f, and between the ball valve f and the quick-connect joint g.

[0065] The embodiment sets the filter assembly at the pump oil discharge port h2, which can avoid larger impurity particles in the pump oil from entering the gear pump 5 and causing the gear pump 5 to fail. The filter assembly includes an oil primary filter b, an oil filter joint c, a transition joint e, a ball valve f, and a quick plug joint g. The working process is as follows: the pump oil enters the oil filter joint c from the pump oil discharge port h2, then enters the oil primary filter b, the pump oil after primary filtration passes through the transition joint e, the ball valve f, the quick plug joint g, and enters the liquid inlet 4 of the gear pump, and the pump oil obtained after separation by the oil-water separator is returned to the pump oil inlet h1 from the connecting pipeline 18 of the oil-water separator a and through the connecting pipeline joint 3.

[0066] Those skilled in the art can easily understand that the above-mentioned advantageous modes can be freely combined and superimposed without conflict.

[0067] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application. The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An oil-water separator, characterized in that: include: An oil cup comprises a cup seat, a cup cover and a filter element; the cup cover is made of a transparent material and is buckled onto the cup seat, forming a sealed accommodation space between the cup seat and the cup cover; the filter element is arranged in the accommodation space; the filter element divides the accommodation space into a first accommodation chamber and a second accommodation chamber; the first accommodation chamber is located inside the filter element; the second accommodation chamber is located between the filter element and the cup cover; an oil inlet and a drain port are provided on the cup seat; an oil drain port is provided on the top of the cup cover; the oil inlet is connected to the first accommodation chamber; the bottom of the second accommodation chamber is connected to the drain port; the top of the second accommodation chamber is connected to the oil drain port; a drive assembly, wherein an output end of the drive assembly is connected to the oil inlet; The pump oil can flow into the first accommodating chamber through the oil inlet under the action of the driving component.

2. The oil-water separator according to claim 1, characterized in that: The oil cup also includes a diverter column; The diverter column is connected between the top of the filter element and the cup cover; a groove is provided on the top of the diverter column; the oil drain port is buckled in the groove; a plurality of small holes are provided on the side of the diverter column along the circumference of the diverter column; the small holes are close to the top of the diverter column and are connected to the groove.

3. The oil-water separator according to claim 1, characterized in that: The driving assembly includes: a reduction motor, a coupling and a gear pump; The output shaft of the reduction motor is connected to the gear pump through the coupling; the gear pump includes a liquid inlet and a liquid outlet; the liquid inlet is used to connect to a vacuum pump; the liquid outlet is connected to the oil inlet of the oil cup.

4. The oil-water separator according to claim 3, characterized in that: The reduction motor, the coupling and the gear pump are stacked in sequence from top to bottom.

5. The oil-water separator according to claim 1, characterized in that: Also includes: a pressure gauge connected to the drive assembly; The pressure gauge is used to obtain the oil inlet pressure of the oil cup.

6. The oil-water separator according to claim 4, characterized in that: Also includes: A three-way connector, wherein the input end of the three-way connector is connected to the output end of the drive assembly; one output end of the three-way connector is connected to the oil inlet of the oil cup through a first hose; The other output end of the three-way connector is connected to the pressure gauge through a second hose.

7. The oil-water separator according to claim 1, characterized in that: Also includes: a housing for accommodating the oil cup and the drive assembly; The shell is provided with heat dissipation holes; the top of the shell is provided with a handle; The bottom of the shell is provided with feet.

8. The oil-water separator according to claim 7, characterized in that: An observation window and a fan are provided on the housing; the observation window is located on a side of the housing close to the oil cup; and the fan is located on a side of the housing close to the drive assembly.

9. A vacuum pump, characterized in that: include: A vacuum pump body, wherein the vacuum pump body is provided with a pump oil discharge port and a pump oil injection port; The oil-water separator according to any one of claims 1 to 8, wherein the pump oil discharge port is connected to the input end of the drive assembly; and the oil discharge port of the oil cup is connected to the pump oil injection port via a connecting pipeline.

10. The vacuum pump according to claim 9, characterized in that The vacuum pump body also includes a filter assembly; The filter assembly includes: an oil primary filter, an oil filter joint, a transition joint, a ball valve and a quick-connect joint; The inlet of the oil primary filter is connected to the pump oil discharge port through the oil filter connector; The outlet of the primary oil filter is connected to the input end of the ball valve through the transition joint; the output end of the ball valve is connected to the input end of the drive assembly through the quick plug joint.

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