Automatic water drain cup for oil-water separator

Abstract

The present application relates to the technical field of vehicle fuel systems, and in particular to an automatic water drain cup for an oil-water separator. The automatic water drain cup for an oil-water separator includes a water cup body and a locking valve. The water cup body includes a closed cavity and an oil-water separation cavity, an oil inlet is provided on the closed cavity, and a water outlet is provided at the bottom of the oil-water separation cavity; the locking valve is movably arranged in the water cup body; the locking valve is configured so that when the locking valve is in a first position, the closed cavity and the oil-water separation cavity are connected through a first channel, and the locking valve is clamped on the water outlet; when the locking valve is in a second position, the locking valve is clamped on the oil inlet and blocked on the first channel, and the water outlet is open. The embodiment of the present application provides an automatic water drain cup for an oil-water separator to solve the problem of increased cost and reduced reliability of vehicle drainage systems caused by achieving automatic drainage through an electronic control system in the related art.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle fuel systems, and in particular to an automatic water drain cup for an oil-water separator. Background Art

[0002] Because diesel fuel contains a certain amount of water, automotive diesel engines are equipped with an oil-water separator to prevent the water from damaging the engine's high-pressure common rail mechanical components. Currently, the majority of domestic oil-water separators have manual drain functions, while some high-end models abroad have oil-water separators with automatic drain functions.

[0003] In related technologies, fuel-water separators utilize gravity to remove impurities and water from fuel, based on the density difference between water and fuel. These impurities and water settle in a water collection cup at the bottom of the separator. Typically, a water level sensor detects when the water content reaches a specific level and then, following a specific drainage logic, controls a solenoid valve to automatically drain the fuel. However, this approach, which relies on water level detection and a corresponding drainage logic to control the solenoid valve to open and close the water shutoff valve, increases the cost of the drainage system and reduces its reliability. Summary of the Invention

[0004] The embodiment of the present application provides an automatic water drain cup for an oil-water separator to solve the problem in the related art of increasing the cost and reducing the reliability of the vehicle drainage system by achieving the purpose of automatic drainage through an electronic control system.

[0005] To achieve the above objectives, the present invention provides an automatic water drain cup for an oil-water separator, which includes:

[0006] The water cup body comprises a closed cavity and an oil-water separation cavity, wherein the closed cavity is provided with an oil inlet and the bottom of the oil-water separation cavity is provided with a water outlet;

[0007] A locking valve is movably disposed in the water storage cup body;

[0008] The locking valve is configured such that, when the locking valve is in a first position, the closed chamber is connected to the oil-water separation chamber through a first channel, and the locking valve is clamped on the water outlet; when the locking valve is in a second position, the locking valve is clamped on the oil inlet and blocked on the first channel, and the water outlet is open.

[0009] In some embodiments, a diverter block is provided between the oil-water separation chamber and the closed chamber, the diverter block comprising an annular stopper and a first stopper, the annular stopper being provided on the inner wall of the water accumulation cup body, and a second channel being provided between the first stopper and the annular stopper;

[0010] The locking valve is arranged through the annular stopper along the length direction of the water accumulation cup body, and an air outlet channel is opened in the locking valve, and the air outlet channel includes a first air outlet channel end and a second air outlet channel end. The second air outlet channel end is connected to the water outlet. When the locking valve is in the first position, the first air outlet channel end is limited on the first stop block. When the locking valve is in the second position, the second channel is connected to the air outlet channel.

[0011] In some embodiments, the second channel is inclined toward the second outlet channel at one end away from the first outlet channel. That is, the first stopper has an inclined surface facing the closed cavity to reduce the risk of diesel floating on the upper layer flowing out of the first outlet channel from the second channel.

[0012] In some embodiments, a diverter block is provided between the oil-water separation chamber and the closed chamber, and the diverter block includes an annular stopper provided on the inner wall of the water accumulation cup body, and the annular stopper is provided with a protrusion toward the locking valve;

[0013] The locking valve is arranged through the annular block along the length direction of the water accumulation cup body, and a avoidance gap for avoiding the bump is opened on the side wall of the locking valve, and the first channel is located between the avoidance gap and the bump.

[0014] In some embodiments, the end of the protrusion facing the locking valve is a locking surface;

[0015] A distance y between the side wall surface of the locking valve and the locking surface in the radial direction of the water storage cup body is greater than or equal to zero. Specifically, y is greater than or equal to zero, the protrusion is partially located in the avoidance notch, and when the locking valve is in a first position, the closed chamber and the oil-water separation chamber are connected through the first passage, and the protrusion does not contact the avoidance notch. When the locking valve is in a second position, the first passage is blocked, and the protrusion contacts the avoidance notch.

[0016] In some embodiments, the end of the protrusion facing the locking valve is a locking surface, and the side of the avoidance gap facing the protrusion is a avoidance gap wall surface;

[0017] The distance x between the locking surface and the avoidance gap wall in the radial direction of the water storage cup body is greater than zero, so that the first channel can communicate with the oil-water separation chamber and the closed chamber.

[0018] In some embodiments, the annular stopper further includes a second stopper located on a side of the protrusion close to the oil-water separation chamber, and a side of the second stopper close to the locking valve is in contact with a side wall of the locking valve.

[0019] In some embodiments, the locking valve includes a first locking end and a valve body for connecting to the oil inlet, a first step is provided at the connection between the first locking end and the valve body, and a spring is sleeved on the first locking end, the diameter of the spring is larger than the diameter of the oil inlet, one end of the spring is limited to the first step, and the other end is limited to the oil inlet.

[0020] In some embodiments, the first locking end is tapered, and the end of the first locking end away from the valve body is sharp. Specifically, the first locking end is pointed and can be aligned with the oil inlet when the locking valve floats to the second position, and its tapered sidewall blocks the oil inlet, preventing diesel from further entering the closed chamber.

[0021] In some embodiments, the locking valve is a float valve, and the float valve includes a ball, which is located in the oil-water separation chamber. Since the float valve is a ball, the ball can maintain a relatively stable state in the oil-water separation chamber, thereby achieving stable floating of the locking valve.

[0022] The beneficial effects of the technical solution provided by this application include:

[0023] The embodiment of the present application provides an automatic water drain cup for an oil-water separator. The cup body is divided into two chambers, namely a closed chamber and an oil-water separation chamber. An oil inlet is provided on the closed chamber, and diesel enters the closed chamber from the oil inlet. A water outlet is provided at the bottom of the oil-water separation chamber, and water is discharged from the cup body from the water outlet. A locking valve is provided in the cup body, and one end is always engaged with the oil inlet or the water outlet, that is, the locking valve always blocks one end. When oil is flowing into the oil inlet, the water outlet is closed; when water is flowing out of the water outlet, the oil inlet is closed, thereby avoiding diesel still entering during water draining, which affects the buoyancy judgment of the locking valve, and improving the oil-water separation effect and accuracy.

[0024] This application uses water density (1g / cm 3 ) is greater than the density of diesel (0.85g / cm 3 ), by selecting a suitable locking valve, it is achieved that when the gravity of the locking valve is greater than the buoyancy in the oil-water separation chamber, the locking valve sinks, the closed chamber and the oil-water separation chamber are connected through the first channel, the oil inlet is opened, and the water outlet is closed; and when there is enough water in the oil-water separation chamber, the gravity of the locking valve is less than the buoyancy of the water, the locking valve floats, the first channel between the closed chamber and the oil-water separation chamber is closed, and the water outlet is opened, only the water and impurities in the oil-water separation chamber will be released, and the oil and water in the closed chamber will not continue to fall, which will not affect the buoyancy judgment of the locking valve and does not rely on the electronic control system. The cost is low and it can be achieved by simply selecting a suitable locking valve. Therefore, it can solve the problem of increased cost and reduced reliability of vehicle drainage systems caused by the method of achieving automatic drainage through an electronic control system in related technologies. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0026] Figure 1 A schematic diagram of the internal structure of the automatic drain cup for an oil-water separator provided in an embodiment of the present application when the water outlet is closed;

[0027] Figure 2 A schematic diagram of the internal structure of the automatic drain cup for an oil-water separator provided in an embodiment of the present application when the water outlet is open;

[0028] Figure 3 A schematic structural diagram of a locking valve provided in an embodiment of the present application;

[0029] Figure 4 for Figure 1 Enlarged view of point A in the middle;

[0030] Figure 5 A schematic diagram of Example 1 of the first channel provided in an embodiment of the present application;

[0031] Figure 6 A schematic diagram of a second embodiment of the first channel provided in an embodiment of the present application;

[0032] Figure 7 A schematic diagram of one embodiment of the first stop block provided in an embodiment of the present application.

[0033] In the figure: 1. Water accumulation cup body; 11. Closed cavity; 111. Oil inlet; 12. Oil-water separation cavity; 121. Water outlet; 2. Locking valve; 21. Air outlet channel; 211. First air outlet channel end; 212. Second air outlet channel end; 22. Avoidance gap; 221. Avoidance gap wall; 23. First locking end; 24. Second locking end; 25. Sphere; 26. Valve body; 27. First step; 28. Side wall; 3. First channel; 4. Second channel; 5. Diverter block; 51. First stop block; 52. Second stop block; 53. Protrusion; 531. Locking surface; 54. Annular stop block; 6. Spring. DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0035] An embodiment of the present application provides an automatic water drain cup for an oil-water separator, which can solve the problem in the related art of achieving automatic drainage through an electronic control system, resulting in increased costs and reduced reliability of the vehicle drainage system.

[0036] See also Figures 1 to 6 As shown, the embodiment of the present application provides an automatic drain cup for an oil-water separator, which includes a drain cup body 1 and a locking valve 2. Figure 1 and Figure 2 As shown, the water cup body 1 includes a closed chamber 11 and an oil-water separation chamber 12, and an oil inlet 111 is opened on the closed chamber 11, and a water outlet 121 is opened at the bottom of the oil-water separation chamber 12; that is, diesel enters the water cup body 1 from the oil inlet 111, and water separated from the diesel is discharged from the water outlet 121.

[0037] Further, combined with Figure 1 and Figure 2 As shown, the locking valve 2 is movably arranged in the water storage cup body 1.

[0038] Combine Figure 1 and Figure 2 As shown, Figure 1 The diesel enters from the oil inlet 111 and the water outlet 121 is closed. At this time, the locking valve 2 is in the state of Figure 1 In the first position shown, the closed chamber 11 is connected to the oil-water separation chamber 12 through the first channel 3, and the locking valve 2 is clamped on the water outlet 121, and the oil inlet 111 is connected to the water cup body 1;

[0039] Figure 2 The water outlet 121 is open and the separated water flows out from the water outlet 121. At this time, the locking valve 2 is in the state of Figure 2 In the second position shown, the locking valve 2 is clamped on the oil inlet 111, the diesel stops entering the water cup body 1, and the locking valve 2 is blocked on the first channel 3. The diesel that has not flowed out of the closed chamber 11 no longer enters the oil-water separation chamber 12, the water outlet 121 is opened, and water with higher density flows out from the water outlet 121.

[0040] The embodiment of the present application provides an automatic water drain cup for an oil-water separator, in which the water cup body 1 is divided into two chambers, namely a closed chamber 11 and an oil-water separation chamber 12, wherein the closed chamber 11 is provided with an oil inlet 111, and diesel enters the closed chamber 11 from the oil inlet 111, and the bottom of the oil-water separation chamber 12 is provided with a water outlet 121, and water is discharged from the water cup body 1 from the water outlet 121. The locking valve 2 is arranged in the water cup body 1, and one end is always engaged with the oil inlet 111 or the water outlet 121, that is, the locking valve 2 always blocks one end. When the oil inlet 111 is taking in oil, the water outlet 121 is closed; when the water outlet 121 is draining water, the oil inlet 111 is closed, thereby avoiding the influence of diesel still entering during water draining on the buoyancy judgment of the locking valve 2, thereby improving the oil-water separation effect and accuracy.

[0041] This application uses water density (1g / cm 3 ) is greater than the density of diesel (0.85g / cm 3 ), by selecting a suitable locking valve 2, it is achieved that when the gravity of the locking valve 2 is greater than the buoyancy in the oil-water separation chamber 12, the locking valve 2 sinks, the closed chamber 11 and the oil-water separation chamber 12 are connected through the first channel 3, the oil inlet 111 is opened, and the water outlet 121 is closed; and when there is enough water in the oil-water separation chamber 12, the gravity of the locking valve 2 is less than the buoyancy of the water, the locking valve 2 floats, the first channel 3 between the closed chamber 11 and the oil-water separation chamber 12 is closed, and the water outlet 121 is opened, only the water and impurities in the oil-water separation chamber 12 will be released, and the oil and water in the closed chamber 11 will not continue to fall, which will not affect the buoyancy judgment of the locking valve 2 and does not rely on the electronic control system. The cost is low and it can be achieved by simply selecting a suitable locking valve 2. Therefore, it can solve the problem of increased cost and reduced reliability of vehicle drainage systems caused by the method of achieving automatic drainage through an electronic control system in the related art.

[0042] In some optional embodiments, see Figure 1 、 Figure 2 and Figure 4 As shown, a diverter block 5 is provided between the oil-water separation chamber 12 and the closed chamber 11, and a passage for the locking valve 2 to pass through is provided in the middle of the diverter block 5;

[0043] Specifically, combined Figure 1 As shown, the diverter block 5 includes an annular stopper 54 and a first stopper 51. The annular stopper 54 is arranged on the inner wall of the water storage cup body 1, and a second channel 4 is provided between the first stopper 51 and the annular stopper 54.

[0044] Furthermore, the locking valve 2 is provided along the length direction of the water cup body 1 through the annular block 54, and an air outlet channel 21 is provided in the locking valve 2. Figure 1 and Figure 2As shown, the air outlet channel 21 includes a first air outlet channel end 211 and a second air outlet channel end 212. The second air outlet channel end 212 is connected to the water outlet 121. When the locking valve 2 is Figure 1 When the first position is shown, the first outlet channel end 211 is limited on the first stop block 51, and the outlet channel 21 is not connected; when the locking valve 2 is Figure 2 When the lock valve 2 is in the second position, the second channel 4 is connected to the air outlet channel 21. At this time, the air in the oil-water separation chamber 12 is connected to the outside air through the air outlet channel 21, playing the role of connecting to the atmosphere. Figure 2 As shown, when in the second position, the water outlet 121 is opened, and the air in the oil-water separation chamber 12 is connected to the outside air through the air outlet channel 21, and the internal and external pressure difference is zero, so that the water in the oil-water separation chamber 12 flows out.

[0045] Optionally, the end of the second channel 4 away from the first air outlet channel 21 is inclined toward the side where the second air outlet channel 21 is located, that is, Figure 7 As shown, the side of the first stop block 51 facing the closed cavity 11 is an inclined surface to reduce the risk of diesel floating on the upper layer flowing out of the first outlet channel 21 through the second channel 4.

[0046] In some optional embodiments, see Figure 1 、 Figure 2 and Figure 4 As shown, a diverter block 5 is provided between the oil-water separation chamber 12 and the closed chamber 11, and a passage for the locking valve 2 to pass through is provided in the middle of the diverter block 5;

[0047] Specifically, combined Figure 1 and Figure 2 As shown, the diverter block 5 includes an annular stopper 54, which is arranged on the inner wall of the water storage cup body 1, and a protrusion 53 is provided on the annular stopper 54 toward the locking valve 2;

[0048] Furthermore, the locking valve 2 is arranged through the annular stopper 54 along the length direction of the water cup body 1, and an avoidance gap 22 for avoiding the protrusion 53 is opened on the side wall surface 28 of the locking valve 2, and the first channel 3 is located between the avoidance gap 22 and the protrusion 53.

[0049] Combine Figure 5 As shown, the end of the protrusion 53 facing the locking valve 2 is a locking surface 531;

[0050] The distance y between the side wall surface 28 of the locking valve 2 and the locking surface 531 in the radial direction of the water storage cup body 1 is greater than or equal to zero.

[0051] At the same time, the radial distance x between the avoidance gap wall surface 221 of the avoidance gap 22 and the locking surface 531 on the water storage cup body 1 is greater than zero, so that the first channel 3 can connect the oil-water separation chamber 12 and the closed chamber 11.

[0052] Specifically, y is greater than or equal to zero, combined with Figure 5 As shown, the protrusion 53 is partially located in the avoidance gap 22. When the locking valve 2 is in the first position, the closed cavity 11 and the oil-water separation cavity 12 are connected through the first channel 3, that is, Figure 5 As shown in the upper figure, the protrusion 53 does not contact the avoidance gap 22; when the locking valve 2 is in the second position, the first channel 3 is blocked and the protrusion 53 contacts the avoidance gap 22.

[0053] When the water in the oil-water separation chamber 12 causes the locking valve 2 to float to the second position, the first channel 3 is blocked and the second channel 4 is opened, that is, the diesel in the closed chamber 11 no longer enters the oil-water separation chamber 12, affecting the force applied to the locking valve 2. At the same time, the air in the oil-water separation chamber 12 is connected to the outside, and water flows out from the water outlet 121.

[0054] This application provides three embodiments.

[0055] Example 1:

[0056] Combine Figure 5 As shown, the radial distance y between the side wall surface 28 of the locking valve 2 and the locking surface 531 in the water cup body 1 is greater than zero, that is, the protrusion 53 is partially located in the avoidance gap 22, and the radial distance x between the avoidance gap wall surface 221 of the avoidance gap 22 and the locking surface 531 in the water cup body 1 is greater than zero. When the locking valve 2 is not floated, the first channel 3 is connected to the closed chamber 11 and the oil-water separation chamber 12, and the locking valve floats to the position shown in FIG. Figure 5 As shown in the figure below, the protrusion 53 is engaged with the avoidance notch 22 , thereby blocking the first channel 3 .

[0057] Example 2:

[0058] Combine Figure 6 As shown, the radial distance y between the side wall 28 of the locking valve 2 and the locking surface 531 in the water cup body 1 is equal to zero, that is, the locking surface 531 is arranged in contact with the side wall 28. At this time, the radial distance x between the avoidance gap wall 221 of the avoidance gap 22 and the locking surface 531 in the water cup body 1 is greater than zero. When the locking valve 2 is not floated, the first channel 3 communicates with the closed chamber 11 and the oil-water separation chamber 12 (as shown in FIG. Figure 6 As shown in the figure above), the locking valve floats to Figure 6 As shown in the figure below, the locking surface 531 of the protrusion 53 is in contact with the side wall surface 28 , blocking the first channel 3 .

[0059] Example 3:

[0060] Combine Figure 1 、 Figure 2 and Figure 4 As shown, the annular stopper 54 further includes a second stopper 52 , which is located on the side of the protrusion 53 close to the oil-water separation chamber 12 , and the side of the second stopper 52 close to the locking valve 2 is in contact with the side wall surface 28 of the locking valve 2 .

[0061] Specifically, the second stop block 52 is arranged to fit the side wall surface 28 of the locking valve 2 and does not overlap with the avoidance gap 22 in the floating direction of the locking valve 2. At the same time, the side of the second stop block 52 facing the inner wall surface of the water collection cup body 1 is part of the first channel 3.

[0062] Optionally, along the floating direction of the locking valve 2 , the second stop block 52 is provided on one side of the protrusion 53 .

[0063] Optionally, there are two second stop blocks 52, which are respectively arranged on both sides of the protrusion 53 along the floating direction of the locking valve 2, and the two second stop blocks 52 are each separated from the protrusion 53 by a moving distance, forming a Figure 1 and Figure 4 The first channel 3 is shown.

[0064] In some optional embodiments, see Figures 1 to 3 As shown, the locking valve 2 includes a first locking end 23 and a valve body 26 for connecting to the oil inlet 111. A first step 27 is provided at the connection between the first locking end 23 and the valve body 26, and a spring 6 is sleeved on the first locking end 23. The diameter of the spring 6 is larger than the diameter of the oil inlet 111. One end of the spring 6 is limited to the first step 27, and the other end is limited to the oil inlet 111.

[0065] Specifically, the deadweight of the locking valve 2 is G, and the buoyancy of the liquid in the oil-water separation chamber 12 on the locking valve 2 is F. 浮 , the pressure of spring 6 on locking valve 2 is F 弹 When there is little water in the oil-water separation chamber 12, that is, F 浮 <F 弹 +G, lock valve 2 is in Figure 1 In the first position shown, the first outlet channel end 211 is blocked on the first stop block 51, the first channel 3 is connected to the oil-water separation chamber 12 and the closed chamber 11, and the water-containing mixture gradually accumulates in the oil-water separation chamber 12;

[0066] When there is enough water in the oil-water separation chamber 12, F 浮 ≥F 弹 +G, the locking valve 2 floats up and is in the state of Figure 2In the second position shown, the second channel 4 is connected to the air outlet channel 21, the air in the oil-water separation chamber 12 is communicated with the outside, the first channel 3 is closed, the negative pressure in the oil-water separation chamber 12 is released, and the water in the oil-water separation chamber 12 is automatically discharged from the water outlet 121 by gravity.

[0067] After the water in the oil-water separation chamber 12 is discharged to a certain extent, the buoyancy of the water F 浮 Less than the elastic force F of spring 6 弹 and the gravity G of the locking valve 2, the locking valve 2 sinks and the first channel 3 is connected.

[0068] In some optional embodiments, see Figures 1 to 3 As shown, the first locking end 23 is tapered, and the end of the first locking end 23 away from the valve body 26 is a sharp end.

[0069] Specifically, the first locking end 23 is a pointed end that can align with the oil inlet 111 when the locking valve 2 floats to the second position, and its tapered side wall blocks the oil inlet 111 to prevent diesel from further entering the closed cavity 11 .

[0070] In some optional embodiments, see Figures 1 to 3 As shown, the locking valve 2 is a float valve, and the float valve includes a ball 25, which is located in the oil-water separation chamber 12. Since the float valve is a ball, the ball 25 can maintain a relatively stable state in the oil-water separation chamber 12, thereby achieving stable floating of the locking valve 2.

[0071] The automatic water drain cup for an oil-water separator provided in the embodiments of the present application has the following advantages:

[0072] 1. The automatic drain cup can be directly connected to the existing oil-water separator to achieve the purpose of automatic drainage. There is no need to open a new mold or design a new oil-water separator, which is low cost.

[0073] 2. The automatic drainage water cup separates oil and water through the density difference between oil and water. It does not require additional electronic control system and software. It has a simple structure, can reduce costs, and has high reliability.

[0074] In the description of this application, it should be noted that the terms "upper" and "lower" and the like 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 this application 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 cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0075] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0076] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. An automatic water drain cup for an oil-water separator, characterized in that: It includes: A water storage cup body (1) comprises a closed cavity (11) and an oil-water separation cavity (12); an oil inlet (111) is provided on the closed cavity (11), and a water outlet (121) is provided at the bottom of the oil-water separation cavity (12); A locking valve (2) movably disposed in the water storage cup body (1); The locking valve (2) is configured such that, when the locking valve (2) is in a first position, the closed chamber (11) and the oil-water separation chamber (12) are communicated with each other through the first channel (3), and the locking valve (2) is clamped on the water outlet (121); when the locking valve (2) is in a second position, the locking valve (2) is clamped on the oil inlet (111) and blocked on the first channel (3), and the water outlet (121) is opened; A diverter block (5) is provided between the oil-water separation chamber (12) and the closed chamber (11), the diverter block (5) comprising an annular stopper (54) and a first stopper (51), the annular stopper (54) being provided on the inner wall of the water accumulation cup body (1), and a second channel (4) being provided between the first stopper (51) and the annular stopper (54); The locking valve (2) is arranged along the length direction of the water cup body (1) through the annular stopper (54), and an air outlet channel (21) is opened in the locking valve (2), the air outlet channel (21) includes a first air outlet channel end (211) and a second air outlet channel end (212), the second air outlet channel end (212) is communicated with the water outlet (121), when the locking valve (2) is in the first position, the first air outlet channel end (211) is limited on the first stopper (51), when the locking valve (2) is in the second position, the second channel (4) is communicated with the air outlet channel (21); An end of the second channel (4) away from the first air outlet channel (21) is inclined toward the side where the second air outlet channel (21) is located; a diverter block (5) is provided between the oil-water separation chamber (12) and the closed chamber (11); the diverter block (5) includes an annular stopper (54); the annular stopper (54) is provided on the inner wall of the water accumulation cup body (1), and a protrusion (53) is provided on the annular stopper (54) in the direction toward the locking valve (2); The locking valve (2) is arranged along the length direction of the water cup body (1) through the annular stopper (54), and a relief notch (22) for avoiding the protrusion (53) is provided on the side wall surface (28) of the locking valve (2), and the first channel (3) is located between the relief notch (22) and the protrusion (53).

2. The automatic drain cup for an oil-water separator according to claim 1, characterized in that: One end of the protrusion (53) facing the locking valve (2) is a locking surface (531); A distance y between the side wall surface (28) of the locking valve (2) and the locking surface (531) in the radial direction of the water storage cup body (1) is greater than or equal to zero.

3. The automatic drain cup for an oil-water separator according to claim 1, characterized in that: The end of the protrusion (53) facing the locking valve (2) is a locking surface (531), and the side of the avoidance gap (22) facing the protrusion (53) is a avoidance gap wall surface (221); The distance x between the locking surface (531) and the avoidance notch wall surface (221) in the radial direction of the water storage cup body (1) is greater than zero.

4. The automatic drain cup for an oil-water separator according to claim 1, characterized in that: The annular stopper (54) further includes a second stopper (52), the second stopper (52) being located on a side of the protrusion (53) close to the oil-water separation chamber (12), and the side of the second stopper (52) close to the locking valve (2) being in contact with the side wall surface (28) of the locking valve (2).

5. The automatic drain cup for an oil-water separator according to claim 1, characterized in that: The locking valve (2) comprises a first locking end (23) for connecting to the oil inlet (111) and a valve body (26); a first step (27) is provided at the connection between the first locking end (23) and the valve body (26); and a spring (6) is sleeved on the first locking end (23); the diameter of the spring (6) is larger than the diameter of the oil inlet (111); one end of the spring (6) is limited to the first step (27), and the other end is limited to the oil inlet (111).

6. The automatic drain cup for an oil-water separator according to claim 5, characterized in that: The first locking end (23) is conical, and the end of the first locking end (23) away from the valve body (26) is a sharp end.

7. The automatic drain cup for an oil-water separator according to claim 1, characterized in that: The locking valve (2) is a floating ball valve, and the floating ball valve comprises a ball (25), and the ball (25) is located in the oil-water separation chamber (12).

Images