An elastomeric septum seal

Abstract

The utility model provides a kind of elastomer diaphragm seal, including static ring component and dynamic ring component, static ring component includes static ring and sealing ring, static ring outer wall is equipped with sealing groove, sealing ring is nested in sealing groove, dynamic ring component includes support ring, diaphragm ring cover, snap ring, spring, base and dynamic ring, support ring inner wall is equipped with convex ring, diaphragm ring cover upper end bottom surface and convex ring top surface abut, diaphragm ring cover lower end is equipped with clamping groove, snap ring is installed in clamping groove, spring top and support ring bottom abut, spring bottom and base are connected, dynamic ring is installed in support ring inside, dynamic ring bottom surface and diaphragm ring cover top surface abut, dynamic ring top surface and static ring outer end surface cooperation form sealing surface, to realize the function of preventing fluid leakage.The utility model diaphragm ring cover has good deformation recovery ability, can closely adhere dynamic ring, carry out elastic compensation when small stroke change of seal is generated, and spring can further stretch in large stroke change, and sealing performance, stability and reliability are higher.

Description

Technical Field

[0001] This utility model relates to the field of sealing technology, and in particular to an elastomeric diaphragm seal. Background Technology

[0002] A mechanical seal is a device that prevents fluid leakage by having at least one pair of end faces perpendicular to the axis of rotation kept in contact and sliding relative to each other under the action of fluid pressure, the elastic force (or magnetic force) of the compensation mechanism, and the cooperation of auxiliary seals. Mechanical seals generally include dynamic ring structures and static ring structures.

[0003] Patent document CN212564389U discloses a mechanical seal, including a stationary ring, a rotating ring that rotates synchronously with a shaft, a transmission seat wrapped around the outer circumference of the rotating ring, a spring installed in the transmission seat, and a push ring pushed by the spring against the rotating ring. A sealing groove is formed on the side of the rotating ring near the push ring, and a sealing ring is installed in the sealing groove. An oil lubrication groove is formed on the side of the rotating ring near the stationary ring, and a cooling circuit is connected to the oil lubrication groove. The cooling circuit includes an oil inlet, a cooling chamber, and a return hole. The oil inlet is formed radially from the oil lubrication groove and connects to the cooling chamber. The return hole connects the top of the cooling chamber and the side of the oil lubrication groove away from the stationary ring. By setting up a cooling circuit, the flow channels of the lubrication groove are increased, thereby facilitating heat dissipation.

[0004] The above solutions are not flexible enough in terms of installation and use, and are inconvenient to disassemble and maintain. They require the use of lubricant to improve the performance of the seal. Furthermore, the seal has poor short-stroke movement capability and a narrow range of applications. Therefore, it is necessary to provide an elastomeric diaphragm seal to address the shortcomings of the existing technology. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an elastomeric diaphragm seal.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] An elastomeric diaphragm seal includes a stationary ring assembly and a rotating ring assembly. The stationary ring assembly includes a stationary ring and a sealing ring. The outer wall of the stationary ring has a sealing groove, and the sealing ring is fitted inside the sealing groove. The rotating ring assembly includes a support ring, a diaphragm ring sleeve, a retaining ring, a spring, a base, and a rotating ring. The inner wall of the support ring has a convex ring. The bottom surface of the upper end of the diaphragm ring sleeve abuts against the top surface of the convex ring. The lower end of the diaphragm ring sleeve has a retaining groove, and the retaining ring is installed in the retaining groove. The top of the spring abuts against the bottom of the support ring, and the bottom of the spring is connected to the base. The rotating ring is installed inside the support ring, and the bottom surface of the rotating ring abuts against the top surface of the diaphragm ring sleeve. The top surface of the rotating ring and the outer end face of the stationary ring cooperate to form a sealing surface to achieve the function of preventing fluid leakage.

[0008] The present invention is further configured such that the top of the support ring is provided with grooves in a circumferential array.

[0009] The present invention is further configured such that the bottom circumferential array of the support ring is provided with notches and grooves.

[0010] The present invention is further configured such that the circumferential array of the retaining ring has protruding teeth, and the protruding teeth correspond to the notch groove.

[0011] The present invention is further configured such that the base has an annular groove, and the bottom of the spring is spirally installed in the annular groove.

[0012] The present invention is further configured such that the outer side of the top of the moving ring is chamfered, and the moving ring is provided with positioning grooves in a circumferential array, the positioning grooves corresponding to the grooves.

[0013] The present invention is further provided with a square groove on the inner end face of the stationary ring, which facilitates positioning and connection with the sealing cavity.

[0014] In summary, this utility model has the following beneficial effects:

[0015] 1. The diaphragm ring sleeve of this utility model has good flexibility, elasticity and deformation recovery ability. It can fit tightly with the moving ring and provide elastic compensation when the seal undergoes small stroke changes. The spring can further extend and retract when the stroke changes are large, resulting in high sealing performance, stability and reliability.

[0016] 2. This utility model does not require a complex lubrication system. Compared with mechanical seals and packing seals that require regular lubrication, it can reduce the use of lubricants and related maintenance work, reduce maintenance costs and environmental pollution. Furthermore, due to its split design, it is easy to disassemble and maintain, and easy to inspect and replace parts.

[0017] 3. The stationary ring, rotating ring and support ring of this utility model are all provided with corresponding grooves, which can facilitate the positioning, installation and cooperation between the components. While facilitating assembly, it also limits the movement between the components to avoid relative movement of the components, thereby affecting the performance of the seal. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of the dynamic ring assembly of this utility model.

[0019] Figure 2 This is a schematic diagram of the support ring structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the retaining ring of this utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the moving ring of this utility model.

[0022] Figure 5This is a structural schematic diagram of the stationary ring assembly of this utility model.

[0023] In the figure, 1. stationary ring assembly, 11. stationary ring, 111. square groove, 12. sealing ring, 2. moving ring assembly, 21. support ring, 211. convex ring, 212. groove, 213. notch groove, 22. diaphragm ring sleeve, 221. retaining groove, 23. retaining ring, 231. convex tooth, 24. spring, 25. base, 251. ring groove, 26. moving ring, 261. chamfer, 262. positioning groove. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0025] Example 1:

[0026] In this embodiment, as Figure 1-5 As shown, the present invention proposes an elastomeric diaphragm seal, comprising a stationary ring assembly 1 and a rotating ring assembly 2. The stationary ring assembly includes a stationary ring 11 and a sealing ring 12. The outer wall of the stationary ring is provided with a sealing groove, and the sealing ring is fitted inside the sealing groove. The rotating ring assembly includes a support ring 21, a diaphragm ring sleeve 22, a retaining ring 23, a spring 24, a base 25, and a rotating ring 26. The inner wall of the support ring is provided with a convex ring. The bottom surface of the upper end of the diaphragm ring sleeve abuts against the top surface of the convex ring. The lower end of the diaphragm ring sleeve is provided with a retaining groove, and the retaining ring is installed in the retaining groove. The top of the spring abuts against the bottom of the support ring, and the bottom of the spring is connected to the base. The rotating ring is installed inside the support ring, and the bottom surface of the rotating ring abuts against the top surface of the diaphragm ring sleeve. The top surface of the rotating ring and the outer end face of the stationary ring cooperate to form a sealing surface to achieve the function of preventing fluid leakage.

[0027] In this embodiment, the support ring is further configured to have grooves 212 arranged in a circumferential array on the top.

[0028] In this embodiment, the support ring is further configured such that the bottom circumferential array has notched grooves 213.

[0029] In this embodiment, the circumferential array of the retaining ring is provided with protruding teeth 231, and the protruding teeth correspond to the notch groove.

[0030] In this example, the protruding teeth are embedded in the notch of the support ring to form a physical stop, effectively preventing the retaining ring from rotating or loosening relative to the support ring during operation, especially when there is vibration. This interlocking design ensures that the lower end of the diaphragm ring sleeve has a more robust and reliable connection with the support ring through the retaining ring, enhancing the rigidity and stability of the entire dynamic ring assembly under dynamic conditions.

[0031] In this embodiment, the base is further configured to have an annular groove 251, and the bottom of the spring is spirally installed in the annular groove. This interlocking design ensures that the lower end of the diaphragm ring sleeve has a more robust and reliable connection with the support ring through the retaining ring, thereby enhancing the rigidity and stability of the entire dynamic ring assembly under dynamic conditions.

[0032] In this embodiment, the rotating ring is further provided with a chamfer 261 on the outer side of its top. The chamfer on the top of the rotating ring greatly facilitates the operation of assembling the rotating ring into the support ring, avoids interference or scratching between the edge and the entrance of the support ring, improves assembly efficiency and component protection. The rotating ring is provided with positioning grooves 262 in a circumferential array. The positioning grooves correspond to the grooves. The positioning grooves on the rotating ring cooperate with the grooves on the top of the support ring, realizing the precise circumferential positioning of the rotating ring inside the support ring, ensuring that the position of the rotating ring relative to the support ring and the entire rotating ring assembly is determined.

[0033] In this embodiment, the inner end face of the stationary ring is provided with a square groove 111. The square groove facilitates positioning and connection with the sealing cavity. The square groove provides a key positioning feature when connecting with the sealing cavity, which makes it very convenient and accurate to install the stationary ring assembly into the predetermined position of the equipment, ensuring its circumferential and radial positions are correct, thereby ensuring the alignment of the stationary ring and the rotating ring, as well as the effective sealing between the stationary ring and the cavity.

[0034] In the description of this utility model, it should be noted that when terms such as "upper," "lower," "inner," "outer," "left," and "right" appear to indicate orientation or positional relationships, they should be understood as being based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product of this utility model is in use, or the orientation or positional relationships commonly understood by those skilled in the art. These terms are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, when terms such as "first" and "second" appear, they are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, it should also be noted that unless otherwise explicitly specified and limited, terms such as "installation," "setting," and "connection" should be interpreted broadly. For example, "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; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. An elastomeric diaphragm seal, characterized in that, The system includes a stationary ring assembly and a rotating ring assembly. The stationary ring assembly includes a stationary ring and a sealing ring. The outer wall of the stationary ring has a sealing groove, and the sealing ring is fitted inside the sealing groove. The rotating ring assembly includes a support ring, a diaphragm ring sleeve, a retaining ring, a spring, a base, and a rotating ring. The inner wall of the support ring has a convex ring. The bottom surface of the upper end of the diaphragm ring sleeve abuts against the top surface of the convex ring. The lower end of the diaphragm ring sleeve has a retaining groove, and the retaining ring is installed in the retaining groove. The top of the spring abuts against the bottom of the support ring, and the bottom of the spring is connected to the base. The rotating ring is installed inside the support ring. The bottom surface of the rotating ring abuts against the top surface of the diaphragm ring sleeve, and the top surface of the rotating ring cooperates with the outer end face of the stationary ring to form a sealing surface, thereby achieving the function of preventing fluid leakage.

2. The elastomeric diaphragm seal according to claim 1, characterized in that, The top of the support ring has a circumferential array of grooves.

3. The elastomeric diaphragm seal according to claim 1, characterized in that, The bottom circumferential array of the support ring has notches and grooves.

4. The elastomeric diaphragm seal according to claim 3, characterized in that, The circumferential array of the retaining ring has protruding teeth, which correspond to the notched grooves.

5. The elastomeric diaphragm seal according to claim 1, characterized in that, The base has an annular groove, and the bottom of the spring is spirally installed in the annular groove.

6. The elastomeric diaphragm seal according to claim 2, characterized in that, The top outer side of the moving ring is chamfered, and the circumferential array of the moving ring is provided with positioning grooves, which correspond to the grooves.

7. The elastomeric diaphragm seal according to claim 1, characterized in that, The inner end face of the stationary ring is provided with a square groove, which facilitates positioning and connection with the sealing cavity.

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