Oil-water separator and heated water collection cup thereof

Abstract

The utility model relates to an oil -water separator and heating type water cup thereof, relate to oil -water separation filter technical field, and the oil -water separator includes oil -water filter, and heating type water cup includes the water cup shell for setting on the oil -water filter, still be provided with the connecting inner bag in the water cup shell, form the lateral cavity between the outside wall of connecting inner bag and the inboard wall of water cup shell, form the bottom chamber between the outer bottom wall of connecting inner bag and the inner bottom wall of water cup shell, respectively be provided with resistance wire in lateral cavity and bottom chamber. The utility model adopts the mode of resistance wire heating to heat the water, connects resistance wire through external power, and resistance wire passes through water cup shell, is wound on the outer peripheral wall of connecting inner bag, and the water in water cup is heated evenly, forms the cavity between connecting inner bag and water cup shell, avoids the direct contact between the water and resistance wire and power supply, causes the situation of electric leakage.

Description

Technical Field

[0001] This application relates to the field of oil-water separator filter technology, and in particular to an oil-water separator and its heated water collection cup. Background Technology

[0002] An oil-water separator is an industrial device that separates oil and water mixtures using physical or chemical methods. Its core principle is based on the density difference between oil and water and the characteristics of fluid mechanics. The oil-water separator separates water from compressed air through principles such as gravity settling and inertial collision. The water collection cup serves as a water collection container to temporarily store the separated liquid water and prevent water from re-entering the system with the airflow.

[0003] When the ambient temperature is below 0℃, the liquid water inside the water collection cup rapidly crystallizes and expands. A 9% increase in ice crystal volume can cause blockage of the drain valve. Over time, the accumulated water will increase, further exacerbating the freezing phenomenon and creating a vicious cycle. At the same time, the radial stress generated by the expansion of the ice can reach 210MPa, causing the weld of the water collection cup to crack. After the water collection cup freezes, the separation process of the oil-water mixture is hindered, and the water cannot be effectively separated, leading to an increase in the water content in the oil. Excessive water in the oil will reduce the lubrication effect, increase the wear of cars using oil-water separators, and even cause car malfunctions. In order to overcome the problem of water freezing inside the water collection cup, the existing technology uses a heater to heat the water collection cup directly inside the cup. However, the heater is in direct contact with the water inside the cup, which may cause leakage. At the same time, it is not possible to heat the water inside the cup evenly, causing stress to be generated in the cup material due to the difference in the coefficient of thermal expansion. Long-term use may cause the cup to crack or leak electricity.

[0004] Therefore, it is necessary to propose an oil-water separator and its heated water collection cup to solve the above problems. Utility Model Content

[0005] This application provides an oil-water separator and its heated water collection cup to improve the technical problem in the related art where water inside the water collection cup freezes and causes damage to the water collection cup in low-temperature environments, leading to malfunctions in vehicles using oil-water separators.

[0006] This application provides an oil-water separator and its heating type water collection cup. The oil-water separator includes an oil-water filter, and the heating type water collection cup includes a water collection cup shell for mounting on the oil-water filter. The water collection cup shell is characterized in that: a connecting inner liner is further provided inside the water collection cup shell, a side cavity is formed between the outer side wall of the connecting inner liner and the inner side wall of the water collection cup shell, and a bottom cavity is formed between the outer bottom wall of the connecting inner liner and the inner bottom wall of the water collection cup shell. A resistance wire is respectively provided in the side cavity and the bottom cavity.

[0007] The technical solution described above in this application embodiment has at least the following technical effects: the water in the inner liner is heated by resistance wire heating. The resistance wire is connected to an external power source and passes through the outer shell of the water cup. It is wound around the outer wall of the inner liner in a spiral manner, so as to heat the water in the water cup evenly. A cavity is formed between the inner liner and the outer shell of the water cup to avoid direct contact between the water and the resistance wire and the power source, thus avoiding leakage.

[0008] In this embodiment, an abutting ring is abutted on the outer bottom wall of the connecting inner liner, and multiple connecting strips are arranged in a ring array on the outer peripheral wall of the abutting ring. The other end of the connecting strip is fixedly connected to the inner wall of the water collection cup shell. An insulating post is provided on the connecting strip. The resistance wire in the side cavity is evenly wound on the insulating post. The resistance wire in the bottom cavity is spirally wound. The resistance wire passes through the bottom wall of the water collection cup shell and is connected to an external power source.

[0009] This technical solution uses a connecting strip to support the inner wall of the water cup shell, which in turn supports the inner liner. This prevents the inner liner from collapsing due to excessive water accumulation and causing damage. Additionally, the connecting strip has insulating posts that allow the resistance wire to be evenly wound around them, preventing direct contact between the resistance wire and the outer wall of the inner liner. This reduces thermal stress concentration and the risk of electrical leakage. The external power source can be the vehicle's own power supply.

[0010] In this embodiment, the resistance wire is made of nickel-chromium alloy, the connecting inner liner is made of stainless steel, and the water collection cup shell has a double-layer composite structure, with the inner layer of the water collection cup shell made of carbon steel and the outer layer of the water collection cup shell made of heat insulation material.

[0011] This technical solution utilizes nickel-chromium alloy, which has a high resistivity and a heating efficiency 3-5 times that of ordinary carbon steel when energized. It can quickly conduct heat to the inner wall of the water collection cup. The stainless steel structure connecting the inner liner can improve its thermal conductivity. The outer shell of the water collection cup has a double-layer structure, with an inner carbon steel layer providing rigid support and an outer insulation layer reducing heat loss.

[0012] In this embodiment, a first snap-fit ​​protrusion is provided on the inner wall of the water collection cup shell, a second snap-fit ​​protrusion is provided on the connecting inner liner, a snap-fit ​​block is provided on the second snap-fit ​​protrusion, and a snap-fit ​​groove is provided on the first snap-fit ​​protrusion at the position corresponding to the snap-fit ​​block. The water collection cup shell and the connecting inner liner are snap-fit ​​connected through the snap-fit ​​block and the snap-fit ​​groove.

[0013] This technical solution allows the outer shell of the water collection cup and the inner liner to be detachable, through the snap-fit ​​groove on the first snap-fit ​​protrusion ring and the snap-fit ​​block on the first snap-fit ​​protrusion ring, which facilitates repair in case the internal resistance wire is damaged.

[0014] In this embodiment, a first sealing ring is provided at the contact point between the first snap-fit ​​protrusion and the second snap-fit ​​protrusion.

[0015] With this technical solution, the first snap-fit ​​protrusion ring and the second snap-fit ​​protrusion ring are sealed by the first sealing ring, which prevents water from entering the heating cavity and causing leakage.

[0016] In this embodiment, the outer shell of the water collection cup is further provided with a pressure relief assembly. The pressure relief assembly includes a pressure relief pipe connected to the outer shell of the water collection cup, an exhaust pipe connected to the pressure relief pipe and disposed on the outer peripheral wall of the pressure relief pipe, a slidingly sealed abutment plate inside the pressure relief pipe, the outer peripheral wall of the abutment plate being slidably sealed to the pressure relief pipe by a second sealing ring, and an abutment spring disposed inside the pressure relief pipe, one end of which abuts against the bottom of the pressure relief pipe and the other end of which abuts against the abutment plate.

[0017] This technical solution heats the air inside the heating cavity, causing the temperature inside the cavity to rise and thus increasing the pressure. A pressure relief assembly then reduces this pressure. During this pressure increase, the pressure relief pipe connects to the heating cavity, and the exhaust pipe connects to the pressure relief pipe. Pressure is applied to a contact plate on the pressure relief pipe, which compresses a contact spring inside the pipe. A second sealing ring on the contact plate creates a sliding seal with the pressure relief pipe. When the contact plate compresses the spring to the exhaust pipe position, the pressure inside the heating cavity is released through the exhaust pipe, achieving the pressure relief effect.

[0018] In this embodiment, the outer shell of the water collection cup is provided with a connecting flange that is sealed to the oil-water filter.

[0019] This technical solution enables the flange to achieve a tight seal through bolt fastening, effectively preventing media leakage. The flange connection is a detachable design, allowing for quick disassembly and assembly without damaging pipes or equipment, greatly simplifying the cleaning of the water collection cup.

[0020] In this embodiment, a drain valve is included that passes through the outer shell of the water collection cup and communicates with the inner liner.

[0021] This technical solution allows the drain valve to easily remove water from inside the water collection cup, improving the separation efficiency of the oil-water separator.

[0022] In this embodiment, an oil-water separator includes an oil-water filter and an oil-water separator and a heated water collection cup, wherein the outer shell of the heated water collection cup is connected to the oil-water filter.

[0023] This technical solution connects the heated water collection cup to the oil-water filter, which helps reduce the occurrence of ice formation in the water collection cup under harsh external environments and avoids leakage. Attached Figure Description

[0024] Figure 1 A three-dimensional structural schematic diagram of the oil-water separator and its heated water collection cup provided in the embodiments of this application; Figure 2 This is a three-dimensional structural diagram of the water-collecting cup provided in an embodiment of this application; Figure 3 A cross-sectional structural diagram of the water-collecting cup provided in an embodiment of this application; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 for Figure 3 Enlarged view of section B in the middle.

[0025] The following are the labeling elements in the figure: 1. Oil-water filter; 20. Water collection cup outer shell; 201. First snap-fit ​​protrusion ring; 202. Snap-fit ​​groove; 21. Connecting inner liner; 211. Second snap-fit ​​protrusion ring; 212. Snap-fit ​​block; 22. Side cavity; 23. Bottom cavity; 24. Resistance wire; 25. First sealing ring; 26. Abutment ring; 27. Connecting strip; 28. Insulating column; 29. ​​Drain valve; 3. Pressure relief assembly; 31. Pressure relief pipe; 32. Exhaust pipe; 33. Abutment plate; 34. Abutment spring; 35. Second sealing ring; 4. Connecting flange. Detailed Implementation

[0026] Existing oil-water separators are exposed to the external environment. When the ambient temperature is below 0°C, the liquid water in the accumulator cup rapidly crystallizes and expands. A 9% increase in ice crystal volume can cause blockage of the drain valve. Over time, the accumulated water will increase, further exacerbating the freezing phenomenon and creating a vicious cycle. At the same time, the radial stress generated by the expansion of the ice can reach 210 MPa, causing the weld of the accumulator cup to crack. After the accumulator cup freezes, the separation process of the oil-water mixture is hindered, and the water cannot be effectively separated, leading to an increase in the water content in the oil. Excessive water in the oil will reduce the lubrication effect, increase equipment wear, and even cause equipment failure.

[0027] Based on this, in order to improve the technical problem in the related technology that the water in the oil-water separator freezes and causes damage to the water in the water collection cup in a low-temperature environment, resulting in equipment failure, the embodiments of this application provide the following solution.

[0028] Please refer to the following: Figures 1 to 5This application provides an oil-water separator and its heating type water collection cup. The oil-water separator includes an oil-water filter 1, and the heating type water collection cup includes a water collection cup shell 20 for mounting on the oil-water filter 1. The water collection cup shell 20 is characterized in that: a connecting inner liner 21 is also provided inside the water collection cup shell 20, a side cavity 22 is formed between the outer side wall of the connecting inner liner 21 and the inner side wall of the water collection cup shell 20, and a bottom cavity 23 is formed between the outer bottom wall of the connecting inner liner 21 and the inner bottom wall of the water collection cup shell 20. A resistance wire 24 is respectively provided in the side cavity 22 and the bottom cavity 23.

[0029] This application provides an oil-water separator and its heated water collection cup. It uses a resistance wire 24 to heat the water inside the inner liner 21. The resistance wire 24 is connected to an external power source and passes through the outer shell 20 of the water collection cup, coiling around the outer wall of the inner liner 21 to evenly heat the water. A cavity is formed between the inner liner 21 and the outer shell 20 to prevent direct contact between the water and the resistance wire 24 and the power source, thus avoiding leakage. This cavity effectively isolates the water from direct contact with the resistance wire 24 and the power source. Even if the resistance wire 24 is damaged, the water will not directly contact the live parts, avoiding the risk of leakage. The resistance wire 24 is encased in the outer wall of the inner liner 21, receiving double protection from both the outer shell and the inner liner, reducing the impact of external physical damage and improving safety. The external power source can be the vehicle's own power supply.

[0030] In this embodiment, an abutting ring 26 is provided on the outer bottom wall of the inner liner 21. Multiple connecting strips 27 are arranged in a ring array on the outer peripheral wall of the abutting ring 26. The other end of the connecting strip 27 is fixedly connected to the inner wall of the water cup shell 20. An insulating post 28 is provided on the connecting strip 27. The resistance wire 24 in the side cavity 22 is evenly wound on the insulating post 28. The resistance wire 24 in the bottom cavity 23 is spirally wound. The resistance wire 24 passes through the bottom wall of the water cup shell 20 and is connected to an external power source.

[0031] In this configuration, the connecting strip 27 connects to the inner wall of the water cup outer shell 20, supporting the inner liner 21 via the abutment ring 26. This prevents excessive water accumulation in the inner liner 21 from collapsing and causing damage. Simultaneously, the connecting strip 27 is equipped with insulating posts 28, allowing the resistance wire 24 to be evenly wound around them while preventing direct contact between the resistance wire 24 and the outer wall of the inner liner 21. This reduces thermal stress concentration and the risk of leakage, allowing the vehicle's own power source to be used as the external power source. Furthermore, the circumferentially distributed design of the insulating posts 28 ensures that the nickel-chromium alloy resistance wire 24 is evenly wound at a spiral interval. Compared to direct contact with the inner liner, this improves heat distribution uniformity by 40%, preventing material boundary corrosion caused by localized hot spots.

[0032] In this embodiment, the resistance wire 24 is made of nickel-chromium alloy, the inner liner 21 is made of stainless steel, and the outer shell 20 of the water collection cup has a double-layer composite structure, with the inner layer of the outer shell 20 being made of carbon steel and the outer layer being made of insulation material.

[0033] With this design, the nickel-chromium alloy has a high resistivity, and its heating efficiency after being powered on is 3-5 times that of ordinary carbon steel. It can quickly conduct heat to the inner wall of the water collection cup. The stainless steel structure of the inner liner 21 can improve its thermal conductivity. The outer shell 20 of the water collection cup has a double-layer structure, with the inner carbon steel layer providing rigid support and the outer insulation layer reducing heat loss.

[0034] In this embodiment, a first snap-fit ​​protrusion ring 201 is provided on the inner wall of the water collection cup shell 20, a second snap-fit ​​protrusion ring 211 is provided on the connecting inner liner 21, a snap-fit ​​block 212 is provided on the second snap-fit ​​protrusion ring 211, and a snap-fit ​​groove 202 is provided on the first snap-fit ​​protrusion ring 201 at a position corresponding to the snap-fit ​​block 212. The water collection cup shell 20 and the connecting inner liner 21 are snap-fit ​​connected through the snap-fit ​​block 212 and the snap-fit ​​groove 202.

[0035] This design allows the water collection cup outer shell 20 and the connecting inner liner 21 to be detachable, through the snap-fit ​​groove 202 and snap-fit ​​block 212 on the first snap-fit ​​protrusion 201. This facilitates repair should the internal resistance wire 24 be damaged. Furthermore, the snap-fit ​​structure allows for quick and easy disassembly of the water collection cup outer shell 20 without the need for special tools, simplifying the repair process. The detachable nature of the water collection cup outer shell 20 and connecting inner liner 21 facilitates individual replacement of damaged components, reducing repair costs and avoiding the need for complete replacement.

[0036] In this embodiment, a first sealing ring 25 is provided at the contact point between the first snap-fit ​​protrusion 201 and the second snap-fit ​​protrusion 211.

[0037] With this configuration, the first snap-fit ​​protrusion 201 and the second snap-fit ​​protrusion 211 are sealed by the first sealing ring 25, preventing water from entering the heating cavity and causing leakage. This provides a more reliable sealing effect, preventing moisture from seeping into the heating cavity, effectively preventing water from seeping in from the snap-fit ​​area, and protecting the internal resistance wire 24 and circuit components.

[0038] In this embodiment, a pressure relief assembly 3 is also provided on the outer shell 20 of the water collection cup. The pressure relief assembly 3 includes a pressure relief pipe 31 connected to the outer shell 20 of the water collection cup, an exhaust pipe 32 connected to the pressure relief pipe 31 and disposed on the outer peripheral wall of the pressure relief pipe 31, a slidingly sealed abutment plate 33 inside the pressure relief pipe 31, a second sealing ring 35 on the outer peripheral wall of the abutment plate 33 and the pressure relief pipe 31 are slidably sealed, and an abutment spring 34 disposed inside the pressure relief pipe 31, one end of which abuts against the bottom of the pressure relief pipe 31 and the other end of which abuts against the abutment plate 33.

[0039] With this configuration, while heating the air inside the heating cavity, the temperature inside the heating cavity rises, leading to an increase in pressure inside the heating cavity. The pressure relief component 3 reduces the pressure inside the heating cavity. During the process of the pressure increase inside the heating cavity, the pressure relief pipe 31 is connected to the heating cavity, and at the same time, the exhaust pipe 32 is connected to the pressure relief pipe 31. The pressure abuts against the abutment plate 33 on the pressure relief pipe 31, and the abutment plate 33 compresses the abutment spring 34 inside the pressure relief pipe 31. The abutment plate 33 slides and seals with the pressure relief pipe 31 through the second sealing ring 35. When the abutment plate 33 compresses the spring to the position of the exhaust pipe 32, the pressure inside the heating cavity is discharged through the exhaust pipe 32, achieving the effect of pressure relief. In this way, by releasing the pressure accumulated in the heating cavity in a timely manner, the risk of explosion caused by excessive pressure is avoided, the safety of equipment and users is protected, the pressure in the heating cavity is precisely controlled within a safe range, and the equipment components are prevented from being damaged due to excessive pressure. The pressure relief process is automatic and does not require manual intervention. When the pressure in the cavity reaches the set value, the abutment plate 33 compresses the spring and opens the pressure relief channel to ensure that the pressure can be released in a timely and effective manner.

[0040] In this embodiment, the outer shell 20 of the water collection cup is provided with a connecting flange 4 that is sealed to the oil-water filter 1.

[0041] With this setup, the flange is tightened with bolts to achieve a tight seal, which can effectively prevent media leakage. The flange connection is a detachable design, which can be quickly disassembled and assembled without damaging the pipes or equipment, greatly simplifying the cleaning of the water collection cup.

[0042] In this embodiment, a drain valve 29 is included, which passes through the outer shell 20 of the water collection cup and communicates with the inner liner 21.

[0043] With this design, the drain valve 29 can easily drain the water inside the water collection cup, thereby improving the separation efficiency of the oil-water separator.

[0044] In this embodiment, an oil-water separator includes an oil-water filter 1 and an oil-water separator and a heated water collection cup, wherein the outer shell 20 of the heated water collection cup is connected to the oil-water filter 1.

[0045] This technical solution connects the heated water collection cup to the oil-water filter 1, which helps reduce the occurrence of ice formation in the water collection cup under harsh external environments and avoids leakage.

[0046] The implementation principle of the oil-water separator and its heated water collection cup provided in this application embodiment is as follows: When using the oil-water separator in a relatively cold environment, the water separated in the oil-water separator flows into the water collection cup, and the water is discharged by the drain valve 29 on the water collection cup to avoid the water in the water collection cup freezing in a cold environment. First, a sealing connection is established between the connecting flange 4 on the outer shell 20 of the water collection cup and the oil-water filter 1. A connecting inner liner 21 is set inside the outer shell 20 of the water collection cup. A first snap-fit ​​protrusion ring 201 is set on the inner wall of the outer shell 20 of the water collection cup, and a second snap-fit ​​protrusion ring 211 on the connecting inner liner 21 is sealed and snapped together. The snap-fit ​​is achieved by the snap-fit ​​groove 202 opened on the first snap-fit ​​protrusion ring 201 and the snap-fit ​​block 212 on the second snap-fit ​​protrusion ring 211. There are side cavities 22 and bottom cavities 23 between the outer shell 20 of the water collection cup and the connecting inner liner 21, so that the resistance wire 24 is set in the side cavities 22 and bottom cavities 23. The first snap-fit ​​protrusion ring 201 and the second snap-fit ​​protrusion ring 211 are sealed by a first sealing ring 25 to prevent water from entering the cavity. The bottom of the connecting inner liner 21 is abutted by an abutment ring 26. The outer periphery of the abutment ring 26 is fixedly connected to the inner wall of the outer shell 20 of the water collection cup by a connecting strip 27 to maintain the stability of the connecting inner liner 21. The water inside the inner liner 21 is heated by heating with a resistance wire 24. The resistance wire 24 is connected to an external power source. The inner liner 21 passes through the outer shell 20 of the water cup and is wound around the outer wall of the inner liner 21 in a spiral manner to heat the water in the water cup. A cavity is formed between the inner liner 21 and the outer shell 20 of the water cup to avoid direct contact between the water and the resistance wire 24 and the power source, thus preventing leakage. In addition, the resistance wire 24 is wound around the insulating post 28 to reduce the generation of thermal stress and reduce the probability of leakage. Simultaneously, while heating the air inside the heating cavity, the temperature inside the heating cavity rises, leading to an increase in pressure inside the heating cavity. The pressure relief component 3 reduces the pressure inside the heating cavity. During the process of the pressure increase inside the heating cavity, the pressure relief pipe 31 is connected to the heating cavity, and the exhaust pipe 32 is connected to the pressure relief pipe 31. The pressure abuts against the abutment plate 33 on the pressure relief pipe 31, and the abutment plate 33 compresses the abutment spring 34 inside the pressure relief pipe 31. The abutment plate 33 slides and seals with the pressure relief pipe 31 through the second sealing ring 35. When the abutment plate 33 compresses the spring to the position of the exhaust pipe 32, the pressure inside the heating cavity is discharged through the exhaust pipe 32, achieving the effect of pressure relief.

[0047] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An oil-water separator and its heated water collection cup, the oil-water separator comprising an oil-water filter (1), the heated water collection cup comprising a water collection cup housing (20) disposed on the oil-water filter (1), characterized in that: The outer shell (20) of the water collection cup is also provided with a connecting inner liner (21). A side cavity (22) is formed between the outer side wall of the connecting inner liner (21) and the inner side wall of the outer shell (20) of the water collection cup. A bottom cavity (23) is formed between the outer bottom wall of the connecting inner liner (21) and the inner bottom wall of the outer shell (20) of the water collection cup. A heating resistance wire (24) is provided in the side cavity (22) and the bottom cavity (23).

2. The oil-water separator and its heating type water trap according to claim 1, characterized in that: An abutting ring (26) is provided on the bottom wall of the inner liner (21). Multiple connecting strips (27) are arranged in a ring array on the outer peripheral wall of the abutting ring (26). The end of the connecting strip (27) away from the abutting ring is fixedly connected to the inner wall of the water collection cup shell (20). An insulating post (28) is provided on the connecting strip (27). The resistance wire (24) in the side cavity (22) is evenly wound on the insulating post (28). The resistance wire (24) in the bottom cavity (23) is spirally wound. The resistance wire (24) passes through the bottom wall of the water collection cup shell (20) and is connected to an external power source.

3. The oil-water separator and its heating type water cup according to claim 2, characterized in that: The resistance wire (24) is made of nickel-chromium alloy, the connecting inner liner (21) is made of stainless steel, and the water cup shell (20) is a double-layer composite structure, with the inner layer of the water cup shell (20) being made of carbon steel and the outer layer of the water cup shell (20) being made of heat insulation material.

4. The oil-water separator and its heating type water trap according to claim 1, characterized in that: The inner wall of the water collection cup shell (20) is provided with a first snap-fit ​​protrusion ring (201), and the connecting inner liner (21) is provided with a second snap-fit ​​protrusion ring (211). The second snap-fit ​​protrusion ring (211) is provided with a snap-fit ​​block (212). The first snap-fit ​​protrusion ring (201) is provided with a snap-fit ​​groove (202) at a position corresponding to the snap-fit ​​block (212). The water collection cup shell (20) and the connecting inner liner (21) are snap-fit ​​connected through the snap-fit ​​block (212) and the snap-fit ​​groove (202).

5. The oil-water separator and its heating type water cup according to claim 4, characterized in that: A first sealing ring (25) is provided at the contact point between the first snap-fit ​​protrusion (201) and the second snap-fit ​​protrusion (211).

6. The oil-water separator and its heating type water cup according to claim 1 or 2 or 3 or 4 or 5, characterized in that: The outer shell (20) of the water collection cup is also provided with a pressure relief assembly (3). The pressure relief assembly (3) includes a pressure relief pipe (31) connected to the outer shell (20) of the water collection cup, an exhaust pipe (32) connected to the pressure relief pipe (31) on the outer peripheral wall of the pressure relief pipe (31), a sliding seal abutment plate (33) inside the pressure relief pipe (31), a second sealing ring (35) on the outer peripheral wall of the abutment plate (33) and the pressure relief pipe (31) are slidably sealed, and an abutment spring (34) inside the pressure relief pipe (31) has one end abutting against the bottom of the pressure relief pipe (31) and the other end abutting against the abutment plate (33).

7. The oil-water separator and its heating type water cup according to claim 1 or 2 or 3 or 4 or 5, characterized in that: The outer shell (20) of the water collection cup is provided with a connecting flange (4) that is sealed to the oil-water filter (1).

8. The oil-water separator and its heating type water cup according to claim 1 or 2 or 3 or 4 or 5, characterized in that: Includes a drain valve (29) that passes through the outer shell (20) of the water collection cup and communicates with the inner liner (21).

9. An oil-water separator characterized by, An oil-water filter (1) and a heating type drip cup according to any one of claims 1 to 8 are included, and the drip cup housing (20) of the heating type drip cup is connected to the oil-water filter (1).

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