Liquid control valve

Abstract

The invention relates to a liquid control valve. The liquid control valve comprises a valve body and a valve element, the valve body is provided with a cavity, at least one liquid inlet used for inputting liquid and a plurality of liquid outlets used for outputting the liquid, and the valve element is movably arranged in the cavity. A sealing piece is arranged in the valve body corresponding to the liquid outlet, the sealing piece comprises a main body part and a lip part, the main body part and the liquid outlet form sealing, the lip part extends towards the valve element from the main body part and protrudes into the cavity, the lip part is flared from the main body part and extends along the outer surface of the valve element, and the inner surface of the lip part is attached to the outer surface of the valve element in a sealed mode; the outer surface of the lip portion protrudes outwards and exceeds the outer surface of the main body portion in the radial direction of the main body portion, and a liquid storage space capable of being filled with liquid is formed between the outer surface of the lip portion and the inner surface of the valve body. According to the liquid control valve, the pressure resistance of the sealing piece can be enhanced, and the sealing performance is improved.

Description

Technical Field

[0001] The present application relates to the technical field of liquid transportation, and in particular to a liquid control valve. Background Art

[0002] Control valves are components that control the flow of liquids and are widely used in the field of liquid transportation. For example, control valves are needed in the cooling system of new energy vehicles to control the flow of coolant and achieve thermal management of new energy vehicles. With the integration of motor cooling, battery heating and cooling, and passenger compartment heating systems in new energy vehicles, water pumps with higher power and head are used in many application scenarios, causing the peak working pressure of the control valve to rise from the traditional 150KPa to 400KPa. The higher the working pressure, the greater the internal leakage of the control valve, which also puts higher requirements on the sealing performance of the control valve.

[0003] In view of this, it is necessary to propose a new control valve sealing structure technical solution to meet the increasingly high sealing performance requirements of control valves. Summary of the invention

[0004] Based on this, the present application provides a liquid control valve that can enhance the pressure resistance of the seal and improve the sealing performance.

[0005] To this end, the present application adopts the following technical scheme: a liquid control valve, comprising a valve body and a valve core, the valve body having a chamber, and at least one liquid inlet for inputting liquid and a plurality of liquid outlets for outputting liquid, the valve core being movably arranged in the chamber; wherein a sealing member is arranged in the valve body corresponding to the liquid outlet, the sealing member comprising a main body portion forming a seal with the liquid outlet, and a lip portion extending from the main body portion toward the valve core and protruding into the chamber, the lip portion flaring from the main body portion and extending along the outer surface of the valve core, the inner surface of the lip portion sealingly fitting with the outer surface of the valve core, the outer surface of the lip portion protruding outwardly in a radial direction of the main body portion beyond the outer surface of the main body portion, and a liquid storage space that can be filled with liquid is formed between the outer surface of the lip portion and the inner surface of the valve body.

[0006] In some embodiments, the outer surface of the lip portion includes an inclined surface, and an angle θ between the inclined surface and the outer surface of the main body portion is 120° to 150°.

[0007] In some embodiments, the outer surface of the lip portion includes a straight surface parallel to the outer surface of the main body portion, and the inclined surface is connected between the outer surface of the main body portion and the straight surface.

[0008] In some embodiments, the inner surface of the lip portion includes a first flared surface and a second flared surface, the second flared surface is connected between the inner surface of the main body portion and the first flared surface, and the inclination angle of the second flared surface compared to the inner surface of the main body portion is smaller than the inclination angle of the first flared surface compared to the inner surface of the main body portion.

[0009] In some embodiments, the first flaring surface is a spherical arc surface, and the second flaring surface is an inclined plane.

[0010] In some embodiments, the valve body forms a corner between two intersecting liquid outlets, and the corner is opposite to the lip edge portion, wherein a chamfer is provided at the corner to increase the liquid storage space.

[0011] In some embodiments, the liquid control valve further includes a spring member that applies force to the sealing member along a direction of a central axis of the main body.

[0012] In some embodiments, the lip portion is in a circular shape.

[0013] In some of the embodiments, the lip portion is in the shape of an oblong ring, and the extension width of the lip portion at both ends of the rotation direction of the valve core is greater than the extension width on both sides perpendicular to the rotation direction; wherein, at least the outer surface of the lip portion at both ends of the rotation direction of the valve core has an angle of 120° to 150° with the outer surface of the main body.

[0014] In some embodiments, the valve body includes a first liquid outlet, a second liquid outlet and a third liquid outlet, the first liquid outlet, the second liquid outlet and the third liquid outlet are arranged in a T shape, and the liquid inlet is perpendicular to the first liquid outlet, the second liquid outlet and the third liquid outlet.

[0015] The liquid control valve provided by the present application increases the sealing performance of the seal by creating a liquid pressure difference when there is no liquid in the liquid outlet but liquid on the outside of the lip in a closed state, while in an open state there is liquid on both sides of the seal and the pressure difference is eliminated, the effect of the liquid pressure disappears, and the working torque is reduced; this not only enhances the pressure resistance of the seal in the closed state and improves the sealing performance, but also avoids the problem of increased working torque and increased wear, and has a significant technical effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. 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 creative work.

[0017] Figure 1 This is a cross-sectional view of an embodiment of a liquid control valve of the present application.

[0018] Figure 2 for Figure 1 A partial enlarged view of point A in the middle.

[0019] Figure 3 This is another cross-sectional view of an embodiment of the liquid control valve of the present application.

[0020] Figure 4 This is a cross-sectional view of a seal in an embodiment of a liquid control valve of the present application.

[0021] Figure 5 This is a view of a seal and a valve core in one embodiment of a liquid control valve of the present application.

[0022] Figure 6 It is a three-dimensional schematic diagram of another embodiment of a sealing member.

[0023] The reference numerals of the components are as follows:

[0024] 100. Liquid control valve; 1. Valve body; 101. Liquid outlet; 102. Chamber; 1021. Liquid storage space; 11. Chamfer; 2. Valve core; 201. Liquid inlet; 202. Connecting hole; 21. Rotary operating part; 3. Sealing member; 31. Main body; 311. Reinforcing rib; 32. Lip portion; 321. First flared surface; 322. Second flared surface; 323. Inclined surface; 324. Straight surface; 327. Left and right side ends; 328. Upper and lower side ends; 33. Sealing ring; 4. Spring member; 5. Liquid outlet connector. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0026] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are in contact indirectly through an intermediate medium. Moreover, a first feature being “above”, “above”, or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0030] See also Figures 1 to 6As shown, the present application provides a liquid control valve 100. The liquid control valve 100 includes a valve body 1 and a valve core 2 movably disposed in the valve body 1. The valve body 1 has a chamber 102, and at least one liquid inlet 201 for inputting liquid and a plurality of liquid outlets 101 for outputting liquid. The valve core 2 is movably disposed in the chamber 102, so that the liquid inlet 201 is connected or closed to one or more of the plurality of liquid outlets 101. A sealing member 3 is disposed in the valve body 1 corresponding to the liquid outlet 101. The sealing member 3 includes a main body portion 31 that forms a seal with the liquid outlet 101, and a lip portion 32 that extends from the main body portion 31 toward the valve core and protrudes into the chamber 102, and the inner surface of the lip portion 32 is in contact with the outer surface of the valve core 2 to achieve sealing. A liquid storage space 1021 that can be filled with liquid is formed between the outer surface of the lip portion 32 and the inner surface of the valve body 1; wherein the lip portion 32 is expanded from the main body 31 and extends along the outer surface of the valve core 2. When the lip portion 32 and the outer surface of the valve core 2 are in a sealed fit, the liquid in the liquid storage space 1021 applies pressure to the lip portion 32 to increase the sealing performance between the lip portion 32 and the valve core 2.

[0031] The liquid control valve 100 provided in the present application increases the sealing performance of the seal 3 by forming a liquid pressure difference when there is no liquid in the liquid outlet 101 in the closed state but there is liquid on the outside of the lip portion 32, while in the open state there is liquid on both sides of the seal 3 and the pressure difference is eliminated, the effect of the liquid pressure disappears, and the working torque is reduced; this not only enhances the pressure resistance of the seal 3 in the closed state and improves the sealing performance, but also avoids the problem of increased working torque and increased wear, and has a significant technical effect.

[0032] See also Figures 1 to 3 As shown, in this embodiment, the valve body 1 includes three liquid outlets 101 and one liquid inlet 201, and the three liquid outlets 101 are arranged in a T-shape, and the liquid inlet 201 is perpendicular to the three liquid outlets 101. In other embodiments, the number of the liquid outlets 101 and the liquid inlet 201 is not limited thereto; in other embodiments, the intersection relationship between the liquid inlet 201 and the liquid outlet 101 is not limited to vertical, and the arrangement relationship between the several liquid outlets 101 is not limited to a T-shape. The liquid outlet 101 is connected to a liquid outlet connector 5 to facilitate connection with the pipeline. The liquid outlet connector 5 can be integrally formed, welded together, or assembled together with the valve body 1, and this application does not impose any restrictions on this.

[0033] See also Figures 1 to 3As shown, the valve core 2 is spherical and is provided with a plurality of communication holes 202. The valve core 2 is rotatably disposed in the chamber 102 of the valve body 1. When the plurality of communication holes 202 thereon are rotated to be partially opposite to or completely opposite to the liquid outlet 101, the liquid outlet 101 is opened, and liquid can flow out of the liquid outlet 101; when the portion of the valve core 2 without the communication holes 202 is rotated to be opposite to the liquid outlet 101, the liquid outlet 101 is closed, and liquid cannot flow out of the liquid outlet 101.

[0034] In this embodiment, the valve core 2 is limited to rotate around a central axis L. Figure 3 As shown, one end of the valve core 2 is a rotating operating part 21, and the rotating operating part 21 includes a valve stem integrally provided with the valve core 2 and an operating handle connected to the valve stem to facilitate the rotation of the valve stem. The liquid inlet 201 is connected to the end of the valve core 2 opposite to the rotating operating part 21. In this way, no matter how it rotates, the position of the liquid inlet 201 remains unchanged, and the liquid inlet can be always maintained, while the connection of different liquid outlets 101 is switched. During operation, the liquid flows into the valve core 2 from the liquid inlet 201, flows out through the connecting hole 202 of the valve core 2 to fill the chamber 102, and flows out of the valve body 1 through the liquid outlet 101 connected to the connecting hole 202.

[0035] See also Figure 4 and Figure 5As shown, in this embodiment, the main body 31 of the sealing member 3 is cylindrical, and its extension direction is parallel to the radial direction of the spherical valve core 2. The main body 31 is inserted into the inner side of the liquid outlet joint 5, and the outer ring of the main body 31 is provided with a sealing ring 33, which is sealed and connected to the inner side of the liquid outlet joint 5 through the sealing ring 33. The lip portion 32 is extended from the end of the main body 31 to the surrounding of the main body 31, that is, the lip portion 32 extends beyond the outer surface of the main body 31. In this embodiment, the outer surface of the lip portion 32 includes an inclined surface 323, and the angle θ between the inclined surface 323 and the outer surface of the main body 31 is 120° to 150°. The size of the angle θ affects the direction of the resultant force of the pressure exerted by the liquid in the liquid storage space 1021 on the lip portion 32. When the angle θ is smaller than the above range, the direction of the resultant force of the liquid pressure will be more inclined to be parallel to the central axis of the main body 31, while when the angle θ is larger than the above range, the direction of the resultant force of the liquid pressure will be more inclined to be perpendicular to the central axis of the main body 31. In both cases, it is not conducive to the direction of the resultant force to better point to the center of the valve core 2, and the sealing performance is not good. The present application sets the angle θ between the inclined surface 323 and the outer surface of the main body 31 to 120°~150°, so that the force exerted by the liquid on the inclined surface 323 is more inclined to point to the center of the valve core 2, which can effectively improve the sealing performance. Preferably, the angle θ is one of 125°, 130°, 135°, 140° and 145°.

[0036] Furthermore, the outer surface of the lip portion 32 includes a straight surface 324 parallel to the outer surface of the main body 31, and the inclined surface 323 is connected between the outer surface of the main body 31 and the straight surface 324. The straight surface 324 defines the outermost edge of the lip portion 32 protruding beyond the outer surface of the main body 31, which prevents the lip portion 32 from extending too long, resulting in greater flexibility near the end of its extension, and being easily driven by the valve core 2 and rolled into the liquid outlet 101 during the rotation of the valve core 2.

[0037] In this embodiment, the inner surface of the lip portion 32 includes a first flared surface 321 and a second flared surface 322, wherein the second flared surface 322 is connected between the inner surface of the main body portion 31 and the first flared surface 321, and the inclination angle of the second flared surface 322 relative to the inner surface of the main body portion 31 is smaller than the inclination angle of the first flared surface 321 relative to the inner surface of the main body portion 31. Figure 4As shown in , the dotted line S is the extension line S of the second flared surface 322, and the first flared surface 321 is located outside the extension line S. Such a setting can give priority to ensuring the tightness of the first flared surface 321 in contact with the valve core 2, and ensure the sealing effect. In this embodiment, a part of the projection of the straight surface 324 inward perpendicular to the straight surface 324 overlaps with the first flared surface 321, so that the pressure of the liquid applied inward perpendicular to the straight surface 324 can fall on the first flared surface 321, so that the first flared surface 321 can be squeezed on the outer surface of the valve core 2 by hugging the center of the first flared surface 321, thereby improving the sealing performance. In this embodiment, the first flared surface 321 is a spherical arc surface, which is consistent with the outer surface contour of the valve core 2, and the second flared surface 322 is an inclined plane, or a spherical arc surface with a curvature greater than the first flared surface 321.

[0038] Please refer again Figure 1 and Figure 2 As shown, the liquid storage space 1021 is a part of the chamber 102, specifically, the part of the chamber 102 located between the lip portion 32 and the valve body 1. In this embodiment, the valve body 1 forms a corner between the two intersecting liquid outlets 101, and the corner is opposite to the lip portion 32, wherein a chamfer 11 is provided at the corner to increase the liquid storage space 1021. In this way, the liquid capacity in the liquid storage space 1021 can be increased, which helps to obtain a greater liquid pressure. In this embodiment, the chamfer 11 is a straight chamfer, and the straight line is roughly parallel to the inclined surface 323 of the outer surface of the lip portion 32 located here, and the force F_lq applied by the liquid on the inclined surface 323 is perpendicular to the inclined surface 323 and points to the inside of the valve core 2; in other embodiments, the chamfer 11 can also be a circular arc chamfer.

[0039] See also Figure 1 and Figure 3 As shown, the liquid control valve 100 further includes a spring member 4 that applies force to the sealing member 3 along the direction of the central axis of the main body 31. The spring member 4 elastically presses against one end of the main body 31, and the direction of the elastic force provided by the spring member 4 is as shown in FIG. Figure 3As shown in F_sp. In this embodiment, the spring member 4 is In this embodiment, the pressure applied by the liquid in the liquid storage space 1021 to the lip portion 32 has a first component force parallel to the central axis of the main body 31 and a second component force perpendicular to the central axis of the main body 31, and the second component force is not less than the first component force. The first component force and the elastic force provided by the spring member 4 are superimposed so that the lip portion 32 of the sealing member 3 is pressed against the outer surface of the valve core 2 along the radial direction of the valve core 2, and the second component force causes the lip portion 32 to be tightly pressed against the outer surface of the valve core 2 with the annular center formed by the lip portion 32, so as to work together to improve the sealing performance.

[0040] Since the seal 3 of the present application is arranged on the lip portion 32, when the chamber 102 of the valve body 1 is filled with liquid and there is no liquid in one or several closed liquid outlets 101, the pressure of the liquid will act on the lip portion 32 to make the seal 3 better pressed against the valve core 2; when the liquid pressure is relatively low, the spring member 4 acts as the main force to push the seal 3 against the valve core 2; when the liquid pressure is relatively high, the liquid pressure acts as the main force, and the spring member 4 acts as an auxiliary force to promote better sealing of the seal 3. For the liquid outlet 101 in the open state, since there is liquid inside and outside the seal 3, the water pressure difference disappears, the working torque decreases, and the seal wear is reduced.

[0041] exist Figures 1 to 5 In the embodiment shown, the lip portion 32 is in a circular shape, and the sealing effect is consistent at all locations, and there is no need to distinguish angles during installation. Figure 6 In another embodiment, the lip portion 32 is in the form of an oblong ring, and the extension width of the lip portion 32 at both ends in the rotation direction of the valve core 2 is greater than the extension width at both sides perpendicular to the rotation direction. Figure 6As shown by the double arrow line RR in the figure, the two ends in the rotation direction RR are the left and right side ends 327, and the two ends perpendicular to the rotation direction RR are the upper and lower side ends 328. The lip portion 32 at the left and right side ends 327 has a larger extension width, while the lip portion 32 at the upper and lower side ends 328 has a smaller extension width. In this embodiment, due to the extension width of the lip portion 32 at the left and right side ends 327, the area here is large, and a good seal can be achieved by liquid pressure. Therefore, at least the outer surface of the lip portion 32 at the left and right side ends 327 and the outer surface of the main body have an angle of 120° to 150° to achieve better sealing performance. In this embodiment, the sealing performance of the seal 3 is better, but there is a risk of large sealing working torque and the lip portion 32 being drawn into the liquid outlet 101 in high-pressure and large-diameter applications. In order to enhance the structural strength of the lip portion 32 and reduce the risk of it being drawn into the liquid outlet 101, in this embodiment, a plurality of reinforcing ribs 311 are further provided on the outer surface of the seal 3, and the reinforcing ribs 311 are connected to the lip portion 32. For the seals 3 provided in different embodiments of the present application, those skilled in the art can select and adjust according to actual application scenarios.

[0042] Below Figure 1 The state shown in the figure is used as an example to illustrate the use process of the liquid control valve 100 of the present application: in this state, the two liquid outlets 101 located on the left and lower sides of the figure are in an open state, and the liquid outlet 101 located on the upper side of the figure is in a closed state; the liquid flows into the valve core 2 from the liquid inlet 201 in the middle, and is connected with the two liquid outlets 101 on the left and lower sides through the connecting hole 202, and the liquid flows out from the two liquid outlets 101 on the left and lower sides and fills the chamber 102; at this time, the inner and outer sides of the lip portions 32 of the two sealing members 3 on the left and lower sides are filled Liquid, there is no pressure difference between the inside and outside, it is only subjected to the force of the spring member 4, and the outer side of the lip portion 32 of the upper seal 3 is filled with liquid, while its inner side is free of liquid. At this time, a pressure difference is formed between the inside and outside, and the pressure difference acts on the outer side of the lip portion 32, so that the lip portion 32 is tightly attached to the outer surface of the valve core 2; in the process of rotating the valve core 2 to switch the flow direction of the water flow, once the liquid outlet 101 corresponding to the seal 3 is in an open state, the water pressure disappears, so that the working torque in the subsequent rotation process decreases and the seal wear is reduced. In one embodiment, the liquid control valve 100 is applied to the cooling system of a new energy vehicle, and the liquid flowing therein is a coolant.

[0043] Through the above description of the specific embodiment, it can be known that the sealing member 3 in the valve body 1 of the liquid control valve 100 provided by the present application includes a main body 31 that forms a seal with the liquid outlet 101, and a lip portion 32 that extends from the main body 31 to protrude into the chamber 102 of the valve body 1, the inner surface of the lip portion 32 fits with the outer surface of the valve core 2 to achieve sealing, and a liquid storage space 1021 that can be filled with liquid is formed between the outer surface of the lip portion 32 and the inner surface of the valve body 1, and the lip portion 32 is expanded from the main body 31 and extends along the outer surface of the valve core 2. When the water is passed through the valve, when the lip portion 32 and the outer surface of the valve core 2 are in a sealed state, the liquid in the liquid storage space 1021 applies pressure to the lip portion 32 to increase the sealing performance between the lip portion 32 and the valve core 2. The liquid control valve 100 provided in the present application increases the sealing performance of the seal 3 by forming a liquid pressure difference when there is no liquid in the liquid outlet 101 in the closed state but there is liquid on the outside of the lip portion 32, while in the open state there is liquid on both sides of the seal 3 and the pressure difference is eliminated, the effect of the liquid pressure disappears, and the working torque is reduced; this not only enhances the pressure resistance of the seal 3 and improves the sealing performance, but also avoids problems such as increased working torque, increased wear, inconvenient operation and reduced service life.

[0044] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A liquid control valve, comprising a valve body and a valve core, wherein the valve body has a chamber, at least one liquid inlet for inputting liquid and a plurality of liquid outlets for outputting liquid, and the valve core is movably arranged in the chamber; characterized in that: A sealing member is provided in the valve body corresponding to the liquid outlet, and the sealing member includes a main body portion which forms a seal with the liquid outlet, and a lip portion which extends from the main body portion toward the valve core and protrudes into the chamber, the lip portion is flared from the main body portion and extends along the outer surface of the valve core, the inner surface of the lip portion is sealingly fitted with the outer surface of the valve core, the outer surface of the lip portion protrudes outwardly in the radial direction of the main body portion beyond the outer surface of the main body portion, and a liquid storage space which can be filled with liquid is formed between the outer surface of the lip portion and the inner surface of the valve body.

2. The liquid control valve according to claim 1, characterized in that: The outer surface of the lip portion includes an inclined surface, and an included angle θ between the inclined surface and the outer surface of the main body portion is 120° to 150°.

3. The liquid control valve according to claim 2, characterized in that: The outer surface of the lip portion includes a straight surface parallel to the outer surface of the main body portion, and the inclined surface is connected between the outer surface of the main body portion and the straight surface.

4. The liquid control valve according to any one of claims 1 to 3, characterized in that: The inner surface of the lip portion includes a first flared surface and a second flared surface, wherein the second flared surface is connected between the inner surface of the main body and the first flared surface, and an inclination angle of the second flared surface relative to the inner surface of the main body is smaller than an inclination angle of the first flared surface relative to the inner surface of the main body.

5. The liquid control valve according to claim 4, characterized in that: The first flaring surface is a spherical arc surface, and the second flaring surface is an inclined plane.

6. The liquid control valve according to claim 1, characterized in that: The valve body forms a corner between two intersecting liquid outlets, and the corner is opposite to the lip edge portion, wherein a chamfer is provided at the corner to increase the liquid storage space.

7. The liquid control valve according to any one of claims 1 to 3, characterized in that: The liquid control valve further includes a spring member that applies force to the sealing member in a direction of a central axis of the main body.

8. The liquid control valve according to any one of claims 1 to 3, characterized in that: The lip edge portion is in a circular shape.

9. The liquid control valve according to any one of claims 1 to 3, characterized in that: The lip portion is in the shape of an oblong ring, and the extension width of the lip portion at both ends of the rotation direction of the valve core is greater than the extension width on both sides perpendicular to the rotation direction; wherein, at least the outer surface of the lip portion at both ends of the rotation direction of the valve core has an angle of 120° to 150° with the outer surface of the main body.

10. The liquid control valve according to claim 1, characterized in that: The valve body comprises a first liquid outlet, a second liquid outlet and a third liquid outlet, wherein the first liquid outlet, the second liquid outlet and the third liquid outlet are arranged in a T shape, and the liquid inlet is perpendicular to the first liquid outlet, the second liquid outlet and the third liquid outlet.

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