Liquid cooling plug for server liquid cooling device

Abstract

The application discloses a liquid cooling plug for a server liquid cooling device, which comprises a plug main body, a sealing ball, a liquid flow control assembly, a sealing assembly and a connecting nut. The sealing ball is arranged in the plug main body. The sealing assembly is arranged at the end of the plug main body and extends into the plug main body at least partially. The liquid flow control assembly is arranged at the end of the plug main body and can move relative to the plug main body. The connecting nut is arranged outside the plug main body and is used for connecting the plug main body to an interface. The liquid cooling plug can prevent liquid in the liquid cooling plug from splashing during plug-in and plug-out, and the damage risk of the server is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of liquid cooling devices, and particularly relates to a liquid cooling plug for a server liquid cooling device. BACKGROUND

[0002] The server liquid cooling pipeline is a key component for cooling a server in a server or high-performance computer, and directly absorbs heat through liquid (usually water or special cooling liquid), and is more efficient than traditional air cooling.

[0003] At present, most of the liquid cooling pipelines on the market are connected with the interface of the server liquid cooling device through the liquid cooling plug, so as to realize the connection of the liquid cooling pipeline and the liquid cooling device installed on the server.

[0004] However, when the liquid cooling pipeline needs to be maintained, the liquid cooling plug usually needs to be separated from the interface of the server liquid cooling device, and during the separation process, the cooling liquid in the liquid cooling pipeline usually splashes, which may cause damage to the server. SUMMARY

[0005] In view of the above problems, the technical problem to be solved by the application is to provide a liquid cooling plug for a server liquid cooling device, which can prevent the liquid in the liquid cooling plug from splashing during the plugging and unplugging process, and reduce the risk of server damage.

[0006] To solve the above technical problems, the technical scheme adopted by the application is,

[0007] A liquid cooling plug for a server liquid cooling device, the liquid cooling plug is plugged into the interface of the server liquid cooling device, comprising: a plug body, a sealing ball, a liquid flow control assembly and a sealing assembly, a liquid flow channel is formed in the plug body, the liquid flow channel comprises a sealing slope surface and a liquid outlet through hole, the sealing slope surface is located in the plug body, and the liquid outlet through hole extends to the end of the plug body facing the interface; the sealing ball is installed in the liquid cooling channel, and the sealing ball is matched with the sealing slope surface; the liquid flow control assembly is installed at the end of the plug body facing the interface; the sealing assembly is installed at the end of the plug body facing the interface, and the sealing assembly extends from the liquid outlet through hole to the sealing slope surface; wherein, along the axial direction of the liquid cooling plug, the liquid flow control assembly can move relative to the plug body, so that the liquid flow control assembly comprises a flow state in which the cooling liquid flows through the liquid flow control assembly and a sealing state in which the liquid outlet through hole is closed; when the liquid flow control assembly is in the flow state, the liquid flow control assembly abuts against the sealing ball, the sealing ball is separated from the sealing slope surface, so that the cooling liquid flows through the liquid flow control assembly; when the liquid flow control assembly is in the sealing state, the liquid flow control assembly is separated from the sealing ball, and the sealing ball abuts against the sealing assembly at the sealing slope surface, so as to close the liquid outlet through hole.

[0008] Further, the sealing assembly comprises an end sealing member and a flow channel sealing member, the end sealing member is installed in the plug main body and at least partially extends into the liquid outlet through hole, and the flow channel sealing member is connected to the sealing slope and at least partially extends into the liquid outlet through hole.

[0009] Further, the end sealing member and the flow channel sealing member are overlapped, and the end sealing member in the liquid outlet through hole can be deformed.

[0010] Further, the sealing assembly further comprises a mounting member, the mounting member is connected to the end sealing member, and the mounting member is installed on the outer side of the plug main body.

[0011] Further, the liquid flow control assembly comprises a support member, the support member at least partially extends into the liquid outlet through hole, a liquid passing groove is formed on the side wall of the support member, and the liquid passing groove is matched with the sealing assembly; when the liquid flow control assembly is in the flow state, the liquid passing groove moves to the sealing slope; when the liquid flow control assembly is in the sealing state, the liquid passing groove moves to the liquid flow through hole.

[0012] Further, the length of the liquid passing groove is smaller than the length of the liquid outlet through hole.

[0013] Further, the liquid flow control assembly further comprises a reset spring and a sliding member, the reset spring abuts against the sliding member, the reset spring applies a force to the sliding member towards the support member, the sliding member is connected to the support member, and the sliding member drives the support member to move.

[0014] Further, the sliding member comprises a connecting ring and a sealing pad, the connecting ring is sleeved on the outer side of the sealing assembly, a mounting groove is formed in the connecting ring, the sealing pad is located in the mounting groove, and the sealing pad abuts against the interface end face.

[0015] Further, an extension section is formed on the sealing pad, and the extension section extends towards the connecting ring and the connecting part of the interface.

[0016] Further, the liquid flow channel further comprises a mounting through hole and a liquid flow through hole, the liquid flow through hole is connected to the sealing slope through the mounting through hole, and a support spring is installed in the mounting through hole, the support spring abuts against the sealing ball and applies a force to the sealing ball towards the sealing slope.

[0017] The present application has the beneficial effect that, by arranging the liquid flow control assembly, the liquid flow channel is closed when the liquid cooling plug is separated from the interface, so that the cooling liquid is prevented from spattering to the surface of the server through the liquid flow channel, thereby reducing the risk of server damage.

[0018] By arranging the sealing assembly, the liquid flow control assembly is sealed with the sealing assembly, so that the cooling liquid is prevented from spattering to the surface of the server through the liquid flow channel during the process of pulling out the liquid flow control assembly from the liquid flow channel, thereby reducing the risk of server damage. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the liquid cooling plug provided in this application in its usage state.

[0020] Figure 2 yes Figure 1 The diagram shows a cross-sectional view of the liquid cooling plug.

[0021] Figure 3 yes Figure 2 A cross-sectional view of the plug body of the liquid-cooled plug shown.

[0022] Figure 4 yes Figure 2 A cross-sectional view of the sealing assembly of the liquid-cooled plug shown.

[0023] Figure 5 yes Figure 2 A cross-sectional view of the liquid flow control assembly of the liquid-cooled plug shown.

[0024] Reference numerals: Interface 1, Plug body 2, Sealing slope 2-1, Liquid outlet hole 2-2, Mounting through hole 2-3, Liquid flow hole 2-4, Sealing ball 3, Liquid flow control assembly 4, Support 4-1, Liquid passage groove 4-2, Return spring 4-3, Sliding part 4-4, Connecting ring 4-5, Sealing gasket 4-6, Mounting groove 4-7, Extension section 4-8, Connecting disc 4-9, Support column 4-10, Sealing assembly 5, End seal 5-1, Flow channel seal 5-2, Mounting part 5-3, Conical part 5-4, First cylindrical part 5-5, Disc part 5-6, Second cylindrical part 5-7, Cylindrical part 5-8, Connecting ring 5-9, Support spring 6, Connecting nut 7. Detailed Implementation

[0025] The present invention will now be further described with reference to the accompanying drawings.

[0026] like Figure 1 As shown, as one implementation, this application provides a liquid-cooling connector for connecting to a server liquid-cooling device, preventing liquid from spraying onto the server surface during insertion and removal, thus reducing the risk of server damage. Specifically, the server liquid-cooling device includes an interface 1, and the liquid-cooling connector is connected to the interface 1 to facilitate the flow of coolant from the liquid-cooling pipeline into the server liquid-cooling device, thereby improving server cooling efficiency.

[0027] like Figure 1 and Figure 2As shown, as an implementation manner, the liquid cooling plug comprises a plug body 2, a sealing ball 3, a liquid flow control assembly 4, a sealing assembly 5 and a connecting nut 7, the sealing ball 3 is installed in the plug body 2, the sealing assembly 5 is installed at the end of the plug body 2 and extends at least partially into the plug body 2, the liquid flow control assembly 4 is installed at the end of the plug body 2 and can move relative to the plug body 2, and the connecting nut 7 is installed outside the plug body 2 and connects the plug body 2 to the interface 1 through the connecting nut 7.

[0028] A liquid flow channel is formed in the plug body 2, and the cooling liquid in the liquid cooling pipe flows into the server liquid cooling device through the liquid flow channel.

[0029] As shown in Figure 2 and Figure 3 , the liquid flow channel comprises a liquid flow hole 2-4, a mounting hole 2-3, a sealing slope surface 2-1 and a liquid outlet hole 2-2, the sealing slope surface 2-1 is located in the plug body 2, the liquid outlet hole 2-2 extends to the end of the plug body 2 towards the interface 1, and the liquid flow hole 2-4 is connected with the sealing slope surface 2-1 through the mounting hole 2-3, that is, the cooling liquid in the liquid flow channel flows into the interface 1 after sequentially flowing through the liquid flow hole 2-4, the mounting hole 2-3, the sealing slope surface 2-1 and the liquid outlet hole 2-2.

[0030] The sealing ball 3 is installed in the mounting hole 2-3 of the liquid flow channel and can move along the axis of the mounting hole 2-3, and the sealing ball 3 is adapted to the sealing slope surface 2-1, that is, when the sealing ball 3 abuts against the sealing slope surface 2-1, the liquid flow channel is in a closed state, and when the sealing ball 3 is separated from the sealing slope surface 2-1, the liquid flow channel is in an open state.

[0031] Furthermore, a supporting spring 6 is installed in the mounting hole 2-3 and abuts against the sealing ball 3 to apply a force to the sealing ball 3 towards the sealing slope surface 2-1, so that the sealing ball 3 abuts against the sealing slope surface 2-1 in a normal state to close the liquid flow channel.

[0032] It should be noted that the inner diameter of the mounting hole 2-3 is greater than the diameter of the sealing ball 3, and the length of the mounting hole 2-3 is greater than the diameter of the sealing ball 3, so as to ensure that the sealing ball 3 can move in the mounting hole 2-3.

[0033] The liquid flow control assembly 4 is installed at the end of the plug body 2 towards the interface 1 and can move relative to the plug body 2 along the axial direction of the liquid cooling plug, so that the liquid flow control assembly 4 comprises a flow state in which the cooling liquid flows through the liquid flow control assembly 4 and a sealing state in which the liquid outlet hole 2-2 is closed.

[0034] When the liquid flow control assembly 4 is in the flow state, the liquid flow control assembly 4 abuts against the sealing ball 3, and the sealing ball 3 is separated from the sealing slope surface 2-1, so that the cooling liquid flows into the interface 1 after flowing through the liquid flow control assembly 4.

[0035] When the liquid flow control assembly 4 is in the sealing state, the liquid flow control assembly 4 is separated from the sealing ball 3, and the sealing ball 3 abuts against the sealing assembly 5 at the sealing slope surface 2-1, so as to close the liquid outlet through hole 2-2.

[0036] It should be noted that when the liquid cooling plug is separated from the interface 1, the sealing ball 3 abuts against the sealing slope surface 2-1, and when the liquid cooling plug is connected to the interface 1, the sealing ball 3 is separated from the sealing slope surface 2-1.

[0037] By arranging the liquid flow control assembly 4, the liquid flow channel is closed when the liquid cooling plug is separated from the interface 1, so as to prevent the cooling liquid from splashing to the surface of the server through the liquid flow channel, thereby reducing the risk of damage to the server.

[0038] As shown in Figure 2 and Figure 4 , the sealing assembly 5 is installed at the end of the plug body 2 towards the interface 1, and the sealing assembly 5 extends from the liquid outlet through hole 2-2 to the sealing slope surface 2-1. By arranging the sealing assembly 5, the sealing performance of the sealing ball 3 connected to the sealing slope surface 2-1 is improved, and the liquid leakage phenomenon of the liquid cooling plug when the liquid cooling plug is separated from the interface 1 is prevented.

[0039] As an implementation manner, the sealing assembly 5 includes an end sealing member 5-1 and a flow channel sealing member 5-2. The end sealing member 5-1 is installed in the plug body 2 and at least partially extends into the liquid outlet through hole 2-2. The flow channel sealing member 5-2 is connected to the sealing slope surface 2-1 and at least partially extends into the liquid outlet through hole 2-2.

[0040] The flow channel sealing member 5-2 includes a tapered portion 5-4 and a first cylindrical portion 5-5 connected to each other. The tapered portion 5-4 is attached to the sealing slope surface 2-1, and the first cylindrical portion 5-5 is attached to the liquid outlet through hole 2-2. The sealing performance of the sealing ball 3 connected to the sealing slope surface 2-1 is improved by the tapered portion 5-4.

[0041] The end sealing member 5-1 includes a disc portion 5-6 and a second cylindrical portion 5-7 connected to each other. The disc portion 5-6 abuts against the end surface of the plug body 2 towards the interface 1, and the second cylindrical portion 5-7 is attached to the liquid outlet through hole 2-2. The sealing performance between the liquid flow control assembly 4 and the plug body 2 is improved by the disc portion 6.

[0042] The liquid flow control assembly 4 is sealed with the sealing assembly 5 through the setting of the sealing assembly 5, so as to prevent the cooling liquid from being sprayed out through the liquid flow control assembly 4 in the process of pulling out the liquid flow control assembly 4 from the liquid flow channel, and further prevent the cooling liquid from being splashed to the surface of the server through the liquid flow channel, so as to reduce the risk of server damage.

[0043] As an implementation manner, the end sealing member 5-1 is overlapped with the flow channel sealing member 5-2, so as to increase the sealing performance between the liquid flow control assembly 4 and the liquid outlet through hole 2-2.

[0044] Further, the end sealing member 5-1 located in the liquid outlet through hole 2-2 can be deformed, that is, the second cylindrical part 5-7 can be deformed, and the sealing performance between the liquid flow control assembly 4 and the plug body 2 is further increased through the deformation of the second cylindrical part 5-7.

[0045] Specifically, the end of the first cylindrical part 5-5 towards the second cylindrical part 5-7 is a bevel, so that the inner diameter of the first cylindrical part 5-5 increases towards the second cylindrical part 5-7, and the end of the second cylindrical part 5-7 towards the first cylindrical part 5-5 is a bevel, so that the outer diameter of the second cylindrical part 5-6 decreases towards the first cylindrical part 5-6.

[0046] When the liquid flow control assembly 4 is inserted into the liquid flow channel, the second cylindrical part 5-7 does not deform, and when the liquid flow control assembly 4 is pulled out of the liquid flow channel, the second cylindrical part 5-7 deforms towards the interface 1 under the action of friction, so as to further increase the sealing performance between the liquid flow control assembly 4 and the end sealing member 5-1.

[0047] As an implementation manner, the sealing assembly 5 further comprises a mounting member 5-3, the mounting member 5-3 is connected with the end sealing member 5-1, and the mounting member 5-3 is mounted on the outside of the plug body 2.

[0048] Specifically, the mounting member 5-3 comprises a cylindrical part 5-8 and a connecting ring 5-9 connected to one side end of the cylindrical part 5-8, the mounting member 5-3 is connected with the disc part 5-6 of the end sealing member 5-1 through the connecting ring 5-9, so as to fix the end sealing member 5-1 at the end of the plug body 2, the cylindrical part 5-8 is mounted at the end of the plug body 2 through threads, and the connecting nut 7 can be limited through the cylindrical part 5-8, so as to prevent the connecting nut 7 from falling off from the plug body 2.

[0049] Further, the width of the connecting ring 5-9 is smaller than the width of the disc part 5-6, so as to improve the sealing performance of the connection between the disc part 5-6 and the liquid flow control assembly 4 when the liquid cooling plug is connected with the interface 1.

[0050] As Figure 2 and Figure 5As shown, as an implementation manner, the liquid flow control assembly 4 comprises a support 4-1 extending at least partially into the liquid outlet through hole 2-2, a liquid passing groove 4-2 is formed on the side wall of the support 4-1, and the liquid passing groove 4-2 is matched with the sealing assembly 5; when the liquid flow control assembly 4 is in the flow state, the liquid passing groove 4-2 moves to the sealing slope surface 2-1; when the liquid flow control assembly 4 is in the sealing state, the liquid passing groove 4-2 moves to the liquid flow through hole 2-4.

[0051] Specifically, the support 4-1 comprises a connecting disc 4-9 and a support column 4-10 connected to the middle part of the connecting disc 4-9, and the support column 4-10 is a hollow structure, and the liquid passing groove 4-2 is formed on the side wall of the support column 4-10, so that the cooling liquid flows into the support column 4-10 through the liquid passing groove 4-2 and then flows into the interface 1 from the support column 4-10.

[0052] When the liquid cooling plug is connected with the interface 1, the support column 4-10 is completely inserted into the liquid outlet through hole 2-2, so that the liquid passing groove 4-2 is located at the sealing slope surface 2-1, and the sealing ball 3 is separated from the sealing slope surface 2-1 by the support column 4-10, so that the liquid flows from the liquid flow channel to the interface 1.

[0053] During the separation of the liquid cooling plug and the interface 1, the support column 4-10 moves relative to the liquid outlet through hole 2-2, so that the liquid passing groove 4-2 is partially shielded by the sealing assembly 5 to the liquid passing groove 4-2 being completely shielded by the sealing assembly 5, and when the liquid cooling plug is completely separated from the interface 1, the sealing ball 3 abuts against the sealing slope surface 2-1, and the liquid flow channel is closed.

[0054] As an implementation manner, the length of the liquid passing groove 4-2 is less than the length of the liquid outlet through hole 2-2, so that before the liquid cooling plug is completely separated from the interface 1, the cooling liquid cannot flow to the rear end of the liquid cooling plug through the liquid passing groove 4-2, thereby preventing the cooling liquid from being sprayed out of the liquid cooling plug during the separation of the liquid cooling plug and the interface 1.

[0055] As an implementation manner, the liquid flow control assembly 4 further comprises a reset spring 4-3 and a sliding member 4-4, the sliding member 4-4 is sleeved outside the cylindrical part 5-8, the sliding member 4-4 is connected with the support 4-1, and the two ends of the reset spring 4-3 abut against the sliding member 4-4 and the connecting nut 7 respectively, the reset spring 4-3 applies a force to the sliding member 4-4 towards the support 4-1, so that the sliding member 4-4 moves in the direction away from the plug main body 2 under the action of the reset spring 4-3, thereby driving the support 4-1 to move through the sliding member 4-4, so that the support column 4-10 moves relative to the liquid outlet through hole 2-2.

[0056] During the installation of the liquid cooling plug and the interface 1, under the action of the threaded connection of the connecting nut 7 and the interface 1, the interface 1 moves towards the reset spring 4-3, and the support 4-1 is driven to move towards the plug body 2, so that the liquid passing groove 4-2 of the support column 4-10 extends into the sealing slope 2-1, so as to realize the communication between the liquid cooling plug and the interface 1.

[0057] During the separation of the liquid cooling plug and the interface 1, under the action of the threaded connection of the connecting nut 7 and the interface 1 and the reset spring 4-3, the support 4-1 is driven to move away from the plug body 2, so that the liquid passing groove 4-2 of the support column 4-10 moves into the sealing assembly 5, and the liquid flow channel is closed.

[0058] As an implementation manner, the sliding part 4-4 includes a connecting ring 4-5 and a sealing pad 4-6, the connecting ring 4-5 is sleeved outside the sealing assembly 5, and the connecting ring 4-5 is fixedly connected with the connecting disc 4-9 of the support 4-1 through screws or other connecting members, and the mounting groove 4-7 is formed in the connecting ring 4-5, and the sealing pad 4-6 is located in the mounting groove 4-7, and the sealing pad 4-6 abuts against the end face of the interface 1, so that the liquid flow control assembly 4 is always in sealing connection with the interface 1 during the movement of the liquid flow control assembly 4.

[0059] As an implementation manner, the sealing pad 4-6 is formed with an extension section 4-8, the extension section 4-8 extends towards the connecting position of the connecting ring 4-5 and the interface 1, and through the arrangement of the extension section 4-8, the sealing property of the connecting position of the liquid flow control assembly 4 and the interface 1 is further improved.

[0060] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application; therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0061] Although the terms corresponding to the reference signs in the drawings are used more frequently herein, the possibility of using other terms is not excluded; the use of these terms is only for the convenience of describing and explaining the essence of the present application; any kind of additional limitation by interpreting them is contrary to the spirit of the present application.

Claims

1. A liquid cooling plug for a server liquid cooling device, the liquid cooling plug is plugged into an interface (1) of a server liquid cooling device, characterized in that, The utility model relates to a liquid cooling plug, comprising: a plug body (2) having a liquid flow channel formed therein, the liquid flow channel comprising a sealing slope (2-1) located in the plug body (2) and a liquid outlet through hole (2-2) extending to an end of the plug body (2) towards the connector (1); a sealing ball (3) installed in the liquid flow channel, the sealing ball (3) being adapted to the sealing slope (2-1); a liquid flow control assembly (4) installed at the end of the plug body (2) towards the connector (1), the liquid flow control assembly (4) comprising a support (4-1) extending at least partially into the liquid outlet through hole (2-2), a liquid passing groove (4-2) being formed on a side wall of the support (4-1) and being adapted to a sealing assembly (5); the sealing assembly (5) being installed at the end of the plug body (2) towards the connector (1) and extending from the liquid outlet through hole (2-2) to the sealing slope (2-1); wherein, along the axial direction of the liquid cooling plug, the liquid flow control assembly (4) is movable relative to the plug body (2), so that the liquid flow control assembly (4) comprises a flow passing state in which cooling liquid flows through the liquid flow control assembly (4) and a sealing state in which the liquid outlet through hole (2-2) is closed; when the liquid flow control assembly (4) is in the flow passing state, the liquid passing groove (4-2) moves to the sealing slope (2-1), the liquid flow control assembly (4) abuts against the sealing ball (3), and the sealing ball (3) is separated from the sealing slope (2-1) to enable the cooling liquid to flow through the liquid flow control assembly (4); when the liquid flow control assembly (4) is in the sealing state, the liquid passing groove (4-2) moves to the liquid flow through hole (2-4), the liquid flow control assembly (4) is separated from the sealing ball (3), and the sealing ball (3) abuts against the sealing assembly (5) at the sealing slope (2-1) to close the liquid outlet through hole (2-2).

2. The liquid cooling plug for a server liquid cooling device of claim 1, wherein, The sealing assembly (5) comprises an end sealing member (5-1) and a flow passage sealing member (5-2), the end sealing member (5-1) being installed in the plug body (2) and extending at least partially into the liquid outlet through hole (2-2); the flow passage sealing member (5-2) being connected to the sealing slope (2-1) and extending at least partially into the liquid outlet through hole (2-2).

3. The liquid cooling plug for a server liquid cooling device of claim 2, wherein, The end sealing member (5-1) and the flow passage sealing member (5-2) are superimposed, and the end sealing member (5-1) located in the liquid outlet through hole (2-2) is capable of deforming.

4. The liquid cooling plug for a server liquid cooling device of claim 2, wherein, The sealing assembly (5) further comprises a mounting member (5-3) connected to the end sealing member (5-1) and mounted on the outside of the plug body (2).

5. The liquid cooling plug for a server liquid cooling device of claim 1, wherein, The length of the liquid passing groove (4-2) is less than the length of the liquid outlet through hole (2-2).

6. The liquid cooling plug for a server liquid cooling device of claim 1, wherein, The liquid flow control assembly (4) further comprises a reset spring (4-3) and a sliding piece (4-4), the reset spring (4-3) abuts against the sliding piece (4-4), and the reset spring (4-3) applies a force to the sliding piece (4-4) towards the support piece (4-1); The sliding piece (4-4) is connected with the support piece (4-1), and the support piece (4-1) is driven to move by the sliding piece (4-4).

7. The liquid cooling plug for a server liquid cooling device of claim 6, wherein, The sliding piece (4-4) comprises a connecting ring (4-5) and a sealing gasket (4-6), the connecting ring (4-5) is sleeved outside the sealing assembly (5), an installation groove (4-7) is formed in the connecting ring (4-5), the sealing gasket (4-6) is located in the installation groove (4-7), and the sealing gasket (4-6) abuts against the end face of the interface (1).

8. The liquid cooling plug for a server liquid cooling device of claim 7, wherein, An extension section (4-8) is formed on the sealing gasket (4-6), and the extension section (4-8) extends towards the connecting position of the connecting ring (4-5) and the interface (1).

9. The liquid cooling plug for a server liquid cooling device of claim 1, wherein, The liquid flow channel further comprises an installation through hole (2-3) and a liquid flow through hole (2-4), and the liquid flow through hole (2-4) is connected with the sealing slope (2-1) through the installation through hole (2-3); A support spring (6) is installed in the installation through hole (2-3), the support spring (6) abuts against the sealing ball (3), and the support spring (6) applies a force to the sealing ball (3) towards the sealing slope (2-1).

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