A tee type flow regulating valve

Abstract

The present application belongs to the field of control valve, and relates to a three-way flow regulating valve. The three-way flow regulating valve comprises a joint A, a disc spring, a sealing ring A, a sealing ring B, a sealing ring, a rotating shaft, a ball valve, a joint B, a shell, a sealing ring E, a guide shaft and a joint C. The shell is designed as a three-way structure, namely, a, b and c ports. The ball valve is also designed as a three-way structure, namely, d, e and f holes. The rotating shaft drives the ball valve to rotate, so that the d, e and f holes of the ball valve are switched between the a, b and c ports of the flow regulating valve, that is, the flow of the a port can completely flow through the b port (the b port is used for connecting with a bypass pipeline of a system radiator), the flow of the a port can completely flow through the c port (the c port is used for connecting with a pipeline of the system radiator), and the flow of the a port can flow through the b port and the c port according to a proportion.

Description

Technical Field

[0001] This invention belongs to the field of control valves and relates to a three-way flow regulating valve. Background Technology

[0002] Currently available flow control valves are two-way structures. See [link / reference] Figure 7 It mainly consists of a shell, pipe joints, ball valve, sealing ring, seals, and disc springs. Its disadvantages are: First, it can only be installed in the bypass line of the regulating system. In low-temperature environments, even with the valve fully open, it cannot completely bypass the radiator in the system. At this time, some of the medium enters the air radiator for cooling. The cooled medium mixes with the bypass medium, resulting in a lower working medium temperature. In low-temperature environments, this prevents the regulating system from controlling the medium temperature within the specified range. Second, the existing ball valve structure exhibits a large torque during rotation, affecting the lifespan of the drive mechanism, requiring design optimization. Summary of the Invention

[0003] Purpose of the invention To solve the above-mentioned technical problems, a flow regulating valve was invented, which can control the valve rotation angle so that the medium at port a flows only through port b or only through port c; it can also control the valve opening within the range of (0 to 90)° so that part of the medium flows through port b and the other part flows through port c, and the flow ratio to port b and port c can be adjusted by adjusting the valve angle; at the same time, the rotating shaft is optimized to reduce the rotation torque.

[0004] Technical solution This invention provides a three-way flow regulating valve, comprising a connector A1, a disc spring 2, a sealing ring A3, a sealing ring B5, a sealing ring 6, a rotating shaft 10, a ball valve 12, a connector B13, a housing 14, a sealing ring E16, a guide shaft 17, and a connector C18. The housing 14 has a three-way structure. Connector A1 is fixedly connected to the housing 14 and sealed with a sealing ring, forming port a for connection to the system's liquid supply pipeline. Connector B13 is fixedly connected to the housing 14, forming port b for connection to the bypass pipeline of the system's radiator. Connector C18 is fixedly connected to the housing 14, forming port c for connection to the radiator's pipeline. Ports a and b are on the same axis, and port c is on the same plane as ports a and b and perpendicular to the axis formed by ports a and b.

[0005] The ball valve 12 has a three-way structure and a through hole df. A through hole e, perpendicular to the through hole df, is located at the center of the ball valve 12. The ball valve 12 is installed inside the housing 14. The center of the ball valve 12 coincides with the intersection point of the axes of connectors A1, B13, and C18. The axis of the rotating shaft 10 is perpendicular to the plane formed by the axes of connectors A1, B13, and C18 and coincides with the intersection point of their axes. One end of the rotating shaft 10 is connected to the keyway of the ball valve 12 via a key. The guide shaft 17 is fixed to the housing 14 and sealed with a sealing ring E16. One end of the guide shaft 17 extends into the mating hole of the ball valve 12. The guide shaft 17 is coaxial with the axis of the rotating shaft 10 and the ball valve 12. The guide shaft 17 and the rotating shaft 10 are located on both sides of the ball valve 12. The driving force acts on the other end of the rotating shaft 10, causing the ball valve 12 to rotate along the axis of the guide shaft 17 and the rotating shaft 10, realizing three flow regulation modes: the connection between port a and port b, the connection between port a and port c, and the simultaneous connection between port a and ports b and c.

[0006] The sealing ring 6 is fitted into the groove of the connector A1, and the sealing ring B5 is fitted into the radial sealing groove of the sealing ring 6, forming a dynamic seal with the inner wall of the groove of the connector A1. The sealing cone surface of the sealing ring 6 mates with the spherical surface of the ball valve 12 to form a dynamic seal. The disc spring 2 is installed between the connector A1 and the sealing ring 6 to provide preload for the sealing ring 6. Similarly, sealing rings 6 and disc springs 2 are installed between the connector B13 and the ball valve 12, and between the connector C18 and the ball valve 12, to prevent liquid leakage when the ball valve 12 is rotated to the 0° or 90° limit position.

[0007] Furthermore, to reduce the rotational torque of the ball valve 12, a bearing 15 is provided between the ball valve 12 and the guide shaft 17. The outer diameter of the bearing 15 is interference-fitted with the inner hole of the ball valve 12, and the inner diameter of the bearing 15 is pressed by the end face of the guide shaft 17 (or can be connected by a key). When the ball valve 12 rotates along the axis, the rotational torque can be significantly reduced.

[0008] Furthermore, in order to reduce the frictional force of the ball valve 12 and improve the internal sealing performance, the surface roughness of the ball valve 12 is not worse than Ra0.4.

[0009] Furthermore, it also includes a sealing cylinder 8, which has a T-shaped structure and an inner hole. The rotating shaft 10 passes through the inner hole of the sealing cylinder 8 and engages with the keyway of the ball valve 12. The shoulder of the rotating shaft 10 contacts the T-shaped end face of the sealing cylinder 8 to form a limit. The sealing ring D9 is installed in the radial sealing groove of the rotating shaft 10 and forms a radial seal with the inner hole of the sealing cylinder 8. At the same time, the inner hole of the sealing cylinder 8 provides guidance for the rotation of the rotating shaft 10.

[0010] Furthermore, the sealing cylinder 8 is installed in the stepped hole of the housing 14, the shoulder of the sealing cylinder 8 contacts and limits the step of the housing 14, and the sealing ring C7 is installed in the radial sealing groove of the stepped hole of the housing 14 to form a radial seal with the outer cylindrical surface of the sealing cylinder 8.

[0011] Furthermore, it also includes a wire retaining ring 11 for the hole, which is installed in the groove of the stepped hole of the housing 14 to prevent the rotating shaft 10 from coming out.

[0012] Furthermore, it also includes an adjusting washer 4, which is used to adjust the preload of the disc spring 2 between the disc spring 2 and the sealing ring 6, thereby adjusting the sealing performance.

[0013] The beneficial effects of this application are as follows: This invention designs the flow regulating valve housing as a three-way structure, with ports a, b, and c; the ball valve 12 is also designed as a three-way structure, with ports d, e, and f. The rotating shaft 10 drives the ball valve 12 to rotate, allowing the ports d, e, and f of the ball valve 12 to switch between ports a, b, and c of the flow regulating valve. This allows the flow from port a to completely flow through port b (port b is used to connect to the bypass pipe of the system radiator), or the flow from port a to completely flow through port c (port c is used to connect to the system radiator pipe), or, depending on the requirements, the flow from port a to a proportionate flow through ports b and c. The flow regulating structure of this invention allows the system flow to completely flow through the bypass pipe in low-temperature environments, effectively bypassing the radiator. It also allows for adjustment of the flow to the radiator and bypass pipe as needed, improving the reliability of system regulation and operation. Simultaneously, this invention reduces the rotational torque of the ball valve, improving reliability and durability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a flow regulating valve according to the present invention.

[0015] Figure 2 This is a schematic diagram of a flow regulating valve of the present invention, with port a and port b connected.

[0016] Figure 3 This is a schematic diagram of a flow regulating valve of the present invention, wherein port a is simultaneously connected to ports b and c.

[0017] Figure 4 This is a schematic diagram of a flow regulating valve according to the present invention, with port a and port c connected.

[0018] Figure 5 This is a schematic diagram showing the connection between port a and port b in the embodiment.

[0019] Figure 6 This is a side view of the structure in the embodiment where port a and port b are connected.

[0020] Figure 7This is a schematic diagram of the structure before the improvement. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions in the embodiments of this invention will be described in more detail below. In the examples, the same or similar reference numerals denote the same or similar components or elements having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of this invention. The embodiments described below with reference to reference are exemplary and intended to explain this invention, and should not be construed as limiting the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention. The embodiments of this invention will be described in detail below.

[0022] This invention provides a flow regulating valve, see Figure 1 It includes connector A1, disc spring 2, sealing ring A3, adjusting washer 4, sealing ring B5, sealing ring 6, sealing ring C7, sealing cylinder 8, sealing ring D9, rotating shaft 10, wire retaining ring for hole 11, ball valve 12, connector B13, housing 14, bearing 15, sealing ring E16, guide shaft 17, and connector C18.

[0023] The housing 14 has a through hole and an intersecting hole in the direction perpendicular to the through hole, forming a three-way structure; connector A1 is fixedly connected to one end of the through hole of the housing 14, forming port a for connection with the system liquid supply line; connector B13 is fixedly connected to the other end of the through hole of the housing 14, forming port b for connection with the bypass line of the system radiator; connector C18 is fixedly connected to one end of the through hole of the housing 14 in the direction perpendicular to the through hole, forming port c for connection with the radiator line.

[0024] The ball valve 12 is provided with a through hole df, and an intersecting hole e perpendicular to the through hole df is provided at the center of the ball valve 12. The ball valve 12 is installed inside the housing 14, and the center of the ball valve 12 coincides with the intersection point of the axes of connector A1, connector B13, and connector C18. During initial installation, the d channel of the ball valve 12 faces the a port, the f channel faces the b port, and the e channel faces away from the c port.

[0025] A keyway is provided on the outer surface of the ball valve 12 perpendicular to the d, e, and f channels. The axis of the keyway passes through the center of the ball valve 12, but the keyway does not penetrate the d, e, and f channels. A hole is provided at the corresponding position of the housing 14, which intersects with the through hole of the housing 14. A step is provided on the intersecting hole, and a sealing groove is provided on the intersecting hole below the step. The sealing ring C7 is installed in the sealing groove. The T-shaped sealing cylinder 8 passes through the intersecting hole. The T-shaped end face of the sealing cylinder 8 contacts the step of the intersecting hole to form a limit. The outer cylindrical surface of the sealing cylinder 8 cooperates with the sealing ring C7 to form an external seal.

[0026] The sealing cylinder 8 has a central hole. The rotating shaft 10 is a stepped shaft with a shoulder and a key. The keyed end of the rotating shaft 10 passes through the central hole of the sealing cylinder 8 and engages with the keyway of the ball valve 12 via the key. The shoulder of the rotating shaft 10 contacts the T-shaped end face of the sealing cylinder 8 to form a limiting position. A radial sealing groove is provided on the outer surface of the cylindrical part between the shoulder and the key of the rotating shaft 10. The sealing ring D9 is installed in the sealing groove of the rotating shaft 10 and forms an external seal with the central hole of the sealing cylinder 8. The inner hole of the sealing cylinder 8 also provides guidance for the rotation of the rotating shaft 10. A retaining ring groove is provided on the intersecting hole on the upper side of the first step of the housing 14. A wire retaining ring 11 is installed in the retaining ring groove to prevent the rotating shaft 10 from falling off.

[0027] A circular guide hole is provided symmetrically at the keyway of the ball valve 12, and a guide shaft 17 is provided at the corresponding position on the housing 14. The guide shaft 17 is fixed to the housing 14, and one end of the guide shaft 17 extending into the housing 14 is engaged with the guide hole of the ball valve 12. In order to reduce the rotational torque of the ball valve 12, a bearing 15 is provided between the guide hole of the ball valve 12 and the guide shaft 17. The outer diameter of the bearing 15 is interference-fitted with the guide hole of the ball valve 12, and the inner diameter of the bearing 15 is pressed by the end face of the guide shaft 17. When the ball valve 12 rotates along the axis, the rotational torque can be significantly reduced. In order to further reduce the friction of the ball valve 12 and improve the internal sealing, the surface roughness of the moving mating surface of the ball valve 12 should not be worse than Ra0.4.

[0028] The sealing ring 6 has a cylindrical structure with a sealing groove on its outer surface. One end of the inner hole has a flared sealing cone, and the other end has an end face structure. The connector A1 has a stepped groove along the axial direction inside. The sealing ring 6 is assembled in the groove of the connector A1, and the sealing cone contacts the ball valve 12 to form a dynamic seal. The sealing ring B5 is assembled in the radial sealing groove of the sealing ring 6 and forms a dynamic seal with the inner wall of the groove of the connector A1. The disc spring 2 is installed between the connector A1 and the sealing ring 6 to provide preload for the sealing ring 6, so that the sealing ring 6 fits against the ball valve 2 to ensure sealing. To adjust the preload of the disc spring 2, an adjusting washer 4 is provided between the disc spring 2 and the sealing ring 6. The number of adjusting washers 4 can be increased or decreased to adjust the sealing performance between the sealing ring 6 and the ball valve 2. Similarly, disc spring 2, adjusting washer 4, sealing ring B5, and sealing ring 6 are installed between connector B13 and ball valve 12, and between connector C18 and ball valve 12, to prevent liquid leakage when ball valve 12 is in the extreme position.

[0029] The driving force acts on the other end of the rotating shaft 10, causing the ball valve 12 to rotate along the axis of the guide shaft 17 and the rotating shaft 10. A 90° counterclockwise rotation rotates the d hole of the ball valve 12 to the c port of the present invention, and the e hole of the ball valve 12 to the a port of the present invention, realizing the connection between the a port and the c port of the present invention. A 90° clockwise rotation of the driving force acts on the other end of the rotating shaft 10, rotating the d hole of the ball valve 12 to the a port of the present invention, and the f hole of the ball valve 12 to the b port of the present invention, realizing the connection between the a port and the b port of the present invention. According to the flow requirements, the angle of the ball valve 12 can be adjusted within the range of (0~90)°, so that the a port can be connected to the b port and the c port at the same time.

[0030] Application of this invention in liquid-cooled power components, such as Figure 5 , Figure 6 As shown, the housing 14 is designed as a three-way structure. Connector A1 is fixed to the housing 14 to form port a for connection with the system liquid supply line. Connector B13 is fixed to the housing 14 to form port b for connection with the bypass line of the system radiator. Connector C18 is fixed to the housing 14 to form port c for connection with the radiator line.

[0031] The ball valve 12 is installed inside the housing 14. The center of the ball valve 12 coincides with the intersection point of the axes of connectors A1, B13, and C18. During initial installation, the d channel of the ball valve 12 faces the a port, the f channel faces the b port, and the e channel faces away from the c port.

[0032] A keyway is provided on the outer surface of the ball valve 12 perpendicular to the d, e, and f channels. The axis of the keyway passes through the center of the ball valve 12, but the keyway does not penetrate the d, e, and f channels. A hole is provided at the corresponding position of the housing 14, which intersects with the through hole of the housing 14. The intersecting hole has a step. A sealing groove is provided on the intersecting hole below the step. The sealing ring C7 is installed in the sealing groove. The T-shaped sealing cylinder 8 passes through the intersecting hole. The T-shaped end face of the sealing cylinder 8 contacts the step of the intersecting hole to form a limit. The outer cylindrical surface of the sealing cylinder 8 cooperates with the sealing ring C7 to form an external seal. The sealing cylinder 8 has a central hole. The keyed end of the rotating shaft 10 passes through the central hole of the sealing cylinder 8 and engages with the keyway of the ball valve 12. The shoulder of the rotating shaft 10 contacts the T-shaped end face of the sealing cylinder 8 to form a limiting position. A radial sealing groove is provided on the outer surface of the cylindrical part between the shoulder and the key of the rotating shaft 10. The sealing ring D9 is installed in the sealing groove of the rotating shaft 10 and forms an external seal with the central hole of the sealing cylinder 8. The inner hole of the sealing cylinder 8 also provides guidance for the rotation of the rotating shaft 10. A retaining ring groove is provided on the intersecting hole on the upper side of the first step of the housing 14. A wire retaining ring 11 is installed in the retaining ring groove to prevent the rotating shaft 10 from falling off.

[0033] A guide hole is provided symmetrically at the keyway of the ball valve 12, and an intersecting hole is provided at the corresponding position on the housing 14. The guide shaft 17 is fixedly connected to the intersecting hole of the housing 14, and one end of the guide shaft 17 extends into the housing 14 and mates with the guide hole of the ball valve 12. A bearing 15 is provided between the guide hole of the ball valve 12 and the guide shaft 17. The outer diameter of the bearing 15 is interference-fitted with the guide hole of the ball valve 12, and the inner diameter of the bearing 15 is pressed by the end face of the guide shaft 17. When the ball valve 12 rotates along the axis, the rotational torque can be significantly reduced.

[0034] The sealing ring 6 is a cylinder with an inner hole. A sealing groove is provided on the outer surface of the cylinder. One end of the inner hole is provided with a flared sealing cone surface, and the other end is an end face structure. The connector A1 has a stepped groove along the axial direction inside. The sealing ring 6 is assembled in the groove of the connector A1. The sealing cone surface contacts the ball valve 12 to form a dynamic seal. The sealing ring B5 is assembled in the radial sealing groove of the sealing ring 6 and forms a dynamic seal with the inner wall of the groove of the connector A1. The disc spring 2 is installed between the connector A1 and the sealing ring 6 to provide preload for the sealing ring 6, so that the sealing ring 6 fits against the ball valve 2 to ensure sealing. To adjust the preload of the disc spring 2, an adjusting washer 4 is provided between the disc spring 2 and the sealing ring 6. The number of adjusting washers 4 can be increased or decreased to adjust the sealing performance between the sealing ring 6 and the ball valve 2. Similarly, disc spring 2, adjusting washer 4, sealing ring B5, and sealing ring 6 are installed between connector B13 and ball valve 12, and between connector C18 and ball valve 12, to prevent liquid leakage when ball valve 12 is in the extreme position.

[0035] The driving force acts on the other end of the rotating shaft 10, causing the ball valve 12 to rotate along the axis of the guide shaft 17 and the rotating shaft 10. A 90° counterclockwise rotation rotates the d hole of the ball valve 12 to the c port of the present invention, and the e hole of the ball valve 12 to the a port of the present invention, realizing the connection between the a port and the c port of the present invention. A 90° clockwise rotation of the driving force acts on the other end of the rotating shaft 10, rotating the d hole of the ball valve 12 to the a port of the present invention, and the f hole of the ball valve 12 to the b port of the present invention, realizing the connection between the a port and the b port of the present invention. According to the flow requirements, the angle of the ball valve 12 can be adjusted within the range of (0~90)°, so that the a port can be connected to the b port and the c port at the same time.

[0036] This flow regulation structure allows the system flow to completely bypass the radiator in low-temperature environments, and can also adjust the flow to the radiator and bypass according to demand, thus improving the reliability of system regulation and operation. At the same time, this invention reduces the rotation torque of the ball valve, thereby improving reliability.

[0037] This invention is applicable to various flow regulation systems, including hydraulic, liquid cooling, and fuel systems.

[0038] Furthermore, unless otherwise defined, the technical or scientific terms used in this application description shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "upper," "lower," "left," "right," "center," "vertical," "horizontal," "inner," and "outer," etc., used in this application description to indicate relative direction or positional relationship are used only to indicate relative orientation or positional relationship, and do not imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. When the absolute position of the described object changes, its relative positional relationship may also change accordingly, and therefore should not be construed as a limitation on this application. The terms "first," "second," "third," and similar terms used in this application description are used only for descriptive purposes to distinguish different components, and should not be construed as indicating or implying relative importance. The terms "a," "one," or "the," etc., used in this application description should not be construed as an absolute limitation on quantity, but should be construed as indicating the existence of at least one. The terms "including," "comprising," etc., used in this application description mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects.

[0039] Furthermore, it should be noted that, unless otherwise explicitly specified and limited, terms such as “installation,” “connection,” and “linkage” used in the description of this application should be interpreted broadly. For example, a connection 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 a connection within two components. Those skilled in the art can understand its specific meaning in this application according to the specific circumstances.

[0040] The above description is merely a specific embodiment of the present invention and is not intended to limit the present invention. Within the spirit and principles of the present invention, any person skilled in the art may use the above-disclosed technical content to make changes or modifications to equivalent embodiments and apply them to other fields. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention, as well as any modifications, equivalent substitutions, improvements, etc., should be included within the protection scope of the present invention.

Claims

1. A three-way flow regulating valve, characterized in that, The system includes connector A, disc spring, sealing ring A, sealing ring B, sealing ring, rotating shaft, ball valve, connector B, housing, sealing ring E, guide shaft, and connector C. The housing is a three-way structure. Connector A is fixed to the housing and sealed with a sealing ring, forming port a for connection to the system's liquid supply line. Connector B is fixed to the housing, forming port b for connection to the system's radiator bypass line. Connector C is fixed to the housing, forming port c for connection to the radiator's piping. Ports a and b are on the same axis, and port c is on the same plane as ports a and b and perpendicular to the axis formed by ports a and b. The ball valve is a three-way structure with a straight through hole df. A through hole e, perpendicular to the straight through hole df, is located at the center of the ball valve. The ball valve is installed inside the housing, and the center of the ball valve coincides with the intersection point of the axes of connectors A, B, and C. The rotating shaft axis is perpendicular to the plane formed by the axes of connectors A, B, and C and coincides with the intersection point of their axes. The rotating shaft is keyed to the keyway of the ball valve. A guide shaft is fixed to the housing and sealed with a sealing ring E. One end of the guide shaft extends into the mating hole of the ball valve. The guide shaft, rotating shaft, and ball valve axes are coaxial, located on opposite sides of the ball valve. Driving force acts on the other end of the rotating shaft, causing the ball valve to rotate along the axes of the guide shaft and rotating shaft, enabling three flow regulation methods: flow between ports a and b, flow between ports a and c, and simultaneous flow between ports a and b and c. A sealing ring is fitted into the groove of connector A, and a sealing ring B is fitted into the radial sealing groove of the sealing ring, forming a dynamic seal with the inner wall of the groove of connector A. The sealing cone surface of the sealing ring mates with the spherical surface of the ball valve to form a dynamic seal. A disc spring is installed between connector A and the sealing ring to provide preload. Similarly, sealing rings and disc springs are installed between connector B and the ball valve, and between connector C and the ball valve, to prevent liquid leakage when the ball valve rotates to its extreme positions.

2. The regulating valve as described in claim 1, characterized in that, A bearing is installed between the ball valve and the guide shaft. The outer diameter of the bearing is interference-fitted with the inner hole of the ball valve. The inner diameter of the bearing is pressed by the end face of the guide shaft. When the ball valve rotates along the axis, the rotational torque can be reduced.

3. The regulating valve as described in claim 1, characterized in that, The surface roughness of the ball valve is not worse than Ra0.

4.

4. The regulating valve as described in claim 1, characterized in that, It also includes a sealing cylinder, which has a T-shaped structure and an inner hole. The rotating shaft passes through the inner hole of the sealing cylinder and engages with the keyway of the ball valve. The shoulder of the rotating shaft contacts the T-shaped end face of the sealing cylinder to form a limit. The sealing ring D is installed in the radial sealing groove of the rotating shaft and forms a radial seal with the inner hole of the sealing cylinder. At the same time, the inner hole of the sealing cylinder provides guidance for the rotation of the rotating shaft.

5. The regulating valve as described in claim 1, characterized in that, The sealing cylinder is installed in the stepped hole of the housing. The shoulder of the sealing cylinder contacts and limits the step of the housing. The sealing ring C is installed in the radial sealing groove of the stepped hole of the housing, forming a radial seal with the outer cylindrical surface of the sealing cylinder.

6. The regulating valve as described in claim 1, characterized in that, It also includes a wire retaining ring for the hole, which is installed in the groove of the stepped hole in the housing to prevent the shaft from coming out.

7. The regulating valve as described in claim 1, characterized in that, It also includes an adjusting washer, which is used to adjust the preload of the disc spring by adding an adjusting washer between the disc spring and the sealing ring.

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