Sectional type sealing element

Abstract

The utility model discloses a sectional type sealing piece which comprises a sealing ring, a positioning ring and an outer winding piece. Wherein an inner winding piece is arranged on the outer wall of the sealing ring; the positioning ring is arranged outside the sealing ring in a sleeving mode, and a preset interval is formed between the inner wall of the positioning ring and the outer wall of the sealing ring under the action of the inner winding piece. The outer winding piece is wound on the outer wall of the positioning ring and used for fixing the positioning ring to a to-be-sealed piece after the positioning ring is installed on the to-be-sealed piece. According to the utility model, deformation caused by direct extrusion of the sealing ring and the positioning ring is effectively avoided, and the problem that the service life of the existing sealing element is shortened after the metal flow control component and the base are disassembled and assembled for multiple times is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing structures, in particular to a segmented sealing element. Background Art

[0002] When the metal flow control component is connected to the base, a sealing gasket is required to seal the metal flow control component and the base. Existing sealing gaskets are usually made of soft materials, such as PTFE, to seal between the metal flow control component and the base.

[0003] Although the existing sealing gasket can provide good sealing performance, due to its relatively soft material, it is easy to deform after being squeezed by the hard sealing surface of the metal flow control component and the base, resulting in changes in the overall structure of the sealing gasket. Therefore, after multiple disassembly and assembly between the metal flow control component and the base, the sealing effect of the sealing gasket between the metal flow control component and the base is reduced, which in turn reduces its service life.

[0004] Based on this, it is necessary to develop a new seal to at least solve the problem that the service life of the existing seal is reduced after multiple disassembly and assembly between the metal flow control component and the base. Utility Model Content

[0005] In view of this, an embodiment of the present invention provides a segmented seal to at least solve the problem of reduced service life of the existing seal after multiple disassembly and assembly between the metal flow control component and the base.

[0006] The present invention provides the following technical solutions:

[0007] The present invention provides a segmented seal, comprising:

[0008] A sealing ring, wherein the outer wall of the sealing ring is provided with an inner winding member;

[0009] a positioning ring, the positioning ring being sleeved outside the sealing ring, and the inner wall of the positioning ring being spaced apart from the outer wall of the sealing ring by the action of the inner wrapping member;

[0010] An outer wrapping piece is wrapped around the outer wall of the positioning ring and is used to fix the positioning ring to the part to be sealed after the positioning ring is installed on the part to be sealed.

[0011] Furthermore, the sealing ring includes:

[0012] A first annular groove is provided on the outer wall of the sealing ring along the circumference of the sealing ring and is used for mounting the inner winding member.

[0013] Furthermore, the first annular groove is located in the middle of the sealing ring.

[0014] Furthermore, the longitudinal cross-section of the inner wrapping member is circular, and the inner wall of the inner wrapping member has a first preset distance from the bottom of the first annular groove.

[0015] Furthermore, the positioning ring includes:

[0016] A second annular groove is opened on the inner wall of the positioning ring along the circumference of the positioning ring and is arranged corresponding to the inner wrapping member.

[0017] Furthermore, the positioning ring further comprises:

[0018] A third annular groove is provided on the outer wall of the positioning ring along the circumference of the positioning ring and is used for mounting the outer wrapping member.

[0019] Furthermore, the positioning ring includes a bottom positioning ring and a top positioning ring, the bottom positioning ring is coaxially arranged below the top positioning ring, and the outer diameter of the bottom positioning ring is larger than the outer diameter of the top positioning ring;

[0020] The third annular groove is provided on the bottom end positioning ring.

[0021] Furthermore, a transition structure is formed on the top end of the top positioning ring and the bottom end of the bottom positioning ring to facilitate the insertion of the positioning rings between the components to be sealed.

[0022] Furthermore, the longitudinal cross-section of the outer wrapping member is circular, and the inner wall of the outer wrapping member and the inner wall of the third annular groove have a second preset distance.

[0023] Furthermore, the height of the sealing ring is smaller than the height of the positioning ring;

[0024] The top end of the sealing ring is lower than the top end of the positioning ring, and the bottom end of the sealing ring is higher than the bottom end of the positioning ring.

[0025] Compared with the prior art, the at least one technical solution adopted in the embodiment of the present invention can achieve the following beneficial effects:

[0026] The utility model discloses a segmented seal, which uses an outer wrapping piece to fix the positioning ring to the part to be sealed, thereby preventing the part to be sealed from directly squeezing the positioning ring, and then uses an inner wrapping piece to separate the positioning ring and the sealing ring, so that the positioning ring squeezes the sealing ring through the inner wrapping piece to seal the sealing ring and the part to be sealed, effectively preventing the sealing ring and the positioning ring from being directly squeezed and deformed, and solves the problem of reduced service life of the existing seal after multiple disassembly and assembly between the metal flow control component and the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 This is a schematic diagram of the installation of the segmented seal of the utility model;

[0029] Figure 2 It is a cross-sectional view of the segmented seal of the present invention.

[0030] The accompanying drawings of the present invention are as follows:

[0031] 10. Sealing ring; 11. First annular groove;

[0032] 20. Inner winding parts;

[0033] 30. Positioning ring; 31. Second annular groove; 32. Third annular groove; 33. Bottom positioning ring; 34. Top positioning ring; 35. Transition structure;

[0034] 40. External winding parts;

[0035] 50. Base;

[0036] 60. Metal flow control components. DETAILED DESCRIPTION

[0037] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0038] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the features in the following embodiments and embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of this application.

[0039] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement an apparatus and / or practice a method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this apparatus and / or practice this method.

[0040] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0041] Additionally, in the following description, specific details are provided to provide a thorough understanding of the examples, however, one skilled in the art will appreciate that the examples can be practiced without these specific details.

[0042] When the metal flow control component 60 is connected to the base 50, a sealing gasket needs to be installed to ensure good sealing performance. The current sealing gasket will be deformed by the extrusion of the hard sealing surface, and the number of repeated disassembly and assembly is low.

[0043] Based on this, this specification proposes a solution: Figures 1-2 As shown, the utility model is a segmented seal, by arranging an inner wrapping member 20 between the sealing ring 10 and the positioning ring 30, so that when the positioning ring 30 and the sealing ring 10 are squeezed, the inner wrapping member 20 can play a certain buffering role, thereby avoiding deformation of the positioning ring 30 and the sealing ring 10; in addition, by arranging an outer wrapping member 40 outside the positioning ring 30, when the positioning ring 30 is put on the sealing member, the positioning ring 30 is avoided from being directly squeezed, so that when the sealing ring 10 and the positioning ring 30 are repeatedly disassembled and used, the service life of the sealing ring 10 and the positioning ring 30 can be extended under the protection of the inner wrapping member 20 and the outer wrapping member 40.

[0044] The following describes the technical solutions provided by various embodiments of the present application in conjunction with the accompanying drawings.

[0045] like Figures 1-2 As shown, the present invention uses a segmented seal to describe in detail how to seal between the metal flow control component 60 and the base 50 .

[0046] Specifically, the metal flow control component 60 is inserted between the bases 50 , and the segmented seal is located between the metal flow control component 60 and the base 50 .

[0047] The present invention discloses a segmented seal for connecting metal / hard components, comprising a sealing ring 10, a positioning ring 30, and an outer wrapping member 40. The outer wall of the sealing ring 10 is provided with an inner wrapping member 20; the positioning ring 30 is sleeved over the sealing ring 10, with the inner wall of the positioning ring 30 maintaining a predetermined gap from the outer wall of the sealing ring 10 under the action of the inner wrapping member 20; and the outer wrapping member 40 is wrapped around the outer wall of the positioning ring 30 to secure the positioning ring 30 to the component to be sealed after the positioning ring 30 is installed.

[0048] The interior of the sealing ring 10 is used to insert the metal flow control component 60 to play a sealing role, and the positioning ring 30 is sleeved on the interior of the base 50 for preliminary positioning to form a segmented seal.

[0049] Among them, when the metal flow control component 60 is inserted into the sealing ring 10, in order to ensure the sealing between the sealing ring 10 and the metal flow control component 60, the inner walls of the metal flow control component 60 and the sealing ring 10 are strongly interfered with. Therefore, if the inner wrapping part 20 is not provided between the sealing ring 10 and the positioning ring 30, when the metal flow control component 60 is directly inserted into the sealing ring 10, its inner wall will be squeezed and deformed, thereby reducing its service life; and the present application provides a certain redundant space by providing an inner wrapping part 20 between the sealing ring 10 and the positioning ring 30, and forming a preset interval between the sealing ring 10 and the positioning ring 30, so as to provide a certain redundant space, so that when the metal flow control component 60 is inserted into the sealing ring 10, the sealing ring 10 can tilt toward the preset interval, and under the action of passing through the inner wrapping part 20, the sealing ring 10 and the metal flow control component 60 are still tightly sealed, thereby reducing the damage to the sealing ring 10 and extending the service life of the sealing ring 10.

[0050] When inserting the positioning ring 30 into the base 50 , the outer wrapping member 40 can be used to separate the positioning ring 30 from the inner wall of the positioning hole of the base 50 to prevent the base 50 from squeezing and damaging the positioning ring 30 during the connection process with the metal flow control component 60 .

[0051] When the positioning ring 30 is inserted into the base 50 , the outer wrapping member 40 is interference-connected with the positioning hole of the base 50 to prevent the positioning ring 30 from falling off the base 50 .

[0052] In some embodiments, the sealing ring 10 includes a first annular groove 11, which is opened on the outer wall of the sealing ring 10 along the circumference of the sealing ring 10 and is used to install the inner wrapping member 20 to prevent the inner wrapping member 20 from being displaced or detached from between the sealing ring 10 and the positioning ring 30.

[0053] When the inner winding member 20 is wound in the first annular groove 11 , its outer wall is located outside the first annular groove 11 so as to abut against the inner wall of the positioning ring 30 .

[0054] The first annular groove 11 may be located at any position on the outer circumference of the sealing ring 10 , such as at the upper part, the middle part or the lower part of the outer circumference of the sealing ring 10 .

[0055] Preferably, the first annular groove 11 is located in the middle of the sealing ring 10 so that the inner wrapping piece 20 is wrapped around the middle of the sealing ring 10 to improve the sealing between the sealing ring 10 and the metal flow control component 60 .

[0056] Furthermore, the longitudinal cross-section of the inner wrapping member 20 is circular, and the inner wall of the inner wrapping member 20 has a first preset distance from the bottom of the first annular groove 11 to provide redundant space for the inner wrapping member 20 .

[0057] Among them, when the metal flow control component 60 over-extrudes the part of the sealing ring 10 on which the inner wrapping part 20 is wrapped, the side wall of the sealing ring 10 deviates so that the first annular groove 11 continues to approach the inner wrapping part 20, that is, the side wall of the sealing ring 10 deviates slightly toward the inner wrapping part 20 to avoid the inner wall of the sealing ring 10 from being completely squeezed and deformed.

[0058] Among them, by setting the longitudinal cross-section of the inner winding part 20 to a circle, the part of the inner winding part 20 located in the first annular groove 11 can be an arc-shaped surface, so that when the metal flow control component 60 and the base 50 are disassembled, it is convenient for the inner winding part 20 to be separated from the first annular groove 11, so that the relative position of the sealing ring 10 and the inner winding part 20 is restored to a certain extent, thereby improving its service life.

[0059] Furthermore, the positioning ring 30 includes a second annular groove 31, which is opened on the inner wall of the positioning ring 30 along the circumference of the positioning ring 30 and is arranged corresponding to the inner wrapping member 20, for positioning the inner wrapping member 20 to prevent the inner wrapping member 20 from detaching from between the sealing ring 10 and the positioning ring 30.

[0060] The reserved interval between the sealing ring 10 and the positioning ring 30 can be flexibly set by setting the depths of the first annular groove 11 and the second annular groove 31 .

[0061] The longitudinal section of the second annular groove 31 may be triangular, so that when the inner wrapping member 20 is squeezed by the sealing ring 10 , the inner wrapping member 20 can be slightly offset into the second annular groove 31 .

[0062] Among them, by arranging the inner part of the inner winding part 20 in the first annular groove 11 and the outer part in the second annular groove 31, the middle part is located between the sealing ring 10 and the positioning ring 30, so that when the sealing ring 10 is squeezed by the metal flow control component 60, it can be slightly offset under the squeezing of the sealing ring 10 to avoid the sealing ring 10 being directly squeezed and damaged, thereby improving the service life of the sealing ring 10.

[0063] In some embodiments, the positioning ring 30 also includes a third annular groove 32, which is opened on the outer wall of the positioning ring 30 along the circumference of the positioning ring 30 and is used to install the outer wrapping member 40 to prevent the outer wrapping member 40 from being offset or detached from the positioning ring 30 when installed in the base 50.

[0064] Among them, by arranging the outer wrapping member 40 in the third annular groove 32, when the outer wrapping member 40 is directly sleeved on the positioning ring 30 and interference fit into the positioning hole of the base 50, the outer wrapping member 40 can be prevented from being offset or detached from the positioning ring 30.

[0065] In some embodiments, the positioning ring 30 includes a bottom positioning ring 33 and a top positioning ring 34, the bottom positioning ring 33 is coaxially arranged below the top positioning ring 34, and the outer diameter of the bottom positioning ring 33 is larger than the outer diameter of the top positioning ring 34; the third annular groove 32 is arranged on the bottom positioning ring 33.

[0066] The bottom positioning ring 33 is used to be inserted into the positioning hole of the base 50 , and the top positioning ring 34 is used to be inserted into the metal flow control component 60 .

[0067] The outer diameter of the bottom positioning ring 33 is set to be larger than the outer diameter of the top positioning ring 34 , thereby providing thickness conditions for the opening of the third annular groove 32 .

[0068] Among them, since the outer diameter of the top positioning ring 34 is small, it is also convenient for the top of the positioning ring 30 to be inserted into the metal flow control component 60, avoiding friction between the top of the positioning ring 30 and the metal flow control component 60.

[0069] Furthermore, a transition structure 35 is formed at the top end of the top positioning ring 34 and the bottom end of the bottom positioning ring 33 to facilitate insertion of the positioning ring 30 between the components to be sealed.

[0070] The longitudinal section of the transition structure may be a trapezoidal structure, a triangular structure, or the like.

[0071] Furthermore, the longitudinal cross-section of the outer wrapping member 40 is circular, and the inner wall of the outer wrapping member 40 has a second preset distance from the inner wall of the third annular groove 32, so as to provide a certain redundant space for the outer wrapping member 40, so as to facilitate the outer wrapping member 40 to be inserted into the positioning hole of the base 50, thereby reducing the friction between the outer wrapping member 40 and the positioning hole of the base 50.

[0072] In some embodiments, the height of the sealing ring 10 is less than the height of the positioning ring 30; the top of the sealing ring 10 is lower than the top of the positioning ring 30, and the bottom of the sealing ring 10 is higher than the bottom of the positioning ring 30, so as to cope with the shape of the positioning holes on the metal flow control component 60 and the base 50.

[0073] The segmented seal of the present invention fixes the positioning ring 30 in the positioning hole of the base 50 and then fixes it through the outer wrapping part 40 to prevent the positioning ring 30 from falling off. At the same time, when the metal flow control component 60 and the hard cover of the base 50 squeeze the sealing ring 10, the setting of the inner wrapping part 20 can make the inner wall of the sealing ring 10 better fit the metal flow control component 60, avoiding the inner wall of the sealing ring 10 from being squeezed and damaged, thereby ensuring its good sealing performance while increasing the number of repeated disassembly and assembly, extending the service performance of the seal and saving costs.

[0074] In this specification, references to the same or similar parts between the various embodiments can be made to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the product embodiments described later, since they correspond to the methods, the description is relatively simple, and the relevant parts can be referred to the partial description of the system embodiment.

[0075] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A segmented seal, characterized in that: include: A sealing ring, wherein the outer wall of the sealing ring is provided with an inner winding member; a positioning ring, the positioning ring being sleeved outside the sealing ring, and the inner wall of the positioning ring being spaced apart from the outer wall of the sealing ring by the action of the inner wrapping member; An outer wrapping piece is wrapped around the outer wall of the positioning ring and is used to fix the positioning ring to the part to be sealed after the positioning ring is installed on the part to be sealed.

2. The segmented seal according to claim 1, characterized in that The sealing ring comprises: A first annular groove is provided on the outer wall of the sealing ring along the circumference of the sealing ring and is used for mounting the inner winding member.

3. The segmented seal according to claim 2, characterized in that The first annular groove is located in the middle of the sealing ring.

4. The segmented seal according to claim 3, characterized in that The longitudinal cross-section of the inner wrapping member is circular, and an inner wall of the inner wrapping member is at a first preset distance from the bottom of the first annular groove.

5. The segmented seal according to any one of claims 1 to 4, characterized in that: The positioning ring comprises: A second annular groove is opened on the inner wall of the positioning ring along the circumference of the positioning ring and is arranged corresponding to the inner wrapping member.

6. The segmented seal according to claim 5, characterized in that The positioning ring also includes: A third annular groove is provided on the outer wall of the positioning ring along the circumference of the positioning ring and is used for mounting the outer wrapping member.

7. The segmented seal according to claim 6, characterized in that The positioning ring includes a bottom positioning ring and a top positioning ring, wherein the bottom positioning ring is coaxially arranged below the top positioning ring, and the outer diameter of the bottom positioning ring is larger than the outer diameter of the top positioning ring; The third annular groove is provided on the bottom end positioning ring.

8. The segmented seal according to claim 7, characterized in that The top end of the top positioning ring and the bottom end of the bottom positioning ring are both formed with transition structures to facilitate the insertion of the positioning rings between the components to be sealed.

9. The segmented seal according to claim 8, characterized in that The longitudinal section of the outer wrapping member is circular, and an inner wall of the outer wrapping member is at a second preset distance from an inner wall of the third annular groove.

10. The segmented seal according to claim 1, wherein: The height of the sealing ring is smaller than the height of the positioning ring; The top end of the sealing ring is lower than the top end of the positioning ring, and the bottom end of the sealing ring is higher than the bottom end of the positioning ring.

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