Sealing structure

Abstract

The utility model belongs to the technical field of flowmeters, and particularly relates to a sealing structure. The sealing structure comprises an elastic sealing part, a sleeving type fastening structure, an upper compressing structure, a lower compressing structure and a peripheral compressing structure, the periphery of the sleeving type fastening structure is sleeved with the elastic sealing part, and the upper compressing structure, the lower compressing structure and the peripheral compressing structure are in extrusion connection with the elastic sealing part from the upper portion, the lower portion and the peripheral side of the elastic sealing part respectively. According to the elastic sealing piece, the elastic sealing piece is extruded through the sleeving type fastening structure, the upper pressing structure, the lower pressing structure and the peripheral pressing structure, an extrusion connection mode replaces an existing limiting groove connection mode, and the beneficial effects of being low in machining cost, high in assembly efficiency and high in long-term sealing stability are achieved. In addition, the extrusion connection mode has good adaptability and stability for regular and irregular structures such as square structures and rhombic structures.

Description

Technical Field

[0001] This application belongs to the field of flow meter technology, and specifically relates to a sealing structure for a flow meter. Background Technology

[0002] In the manufacturing and application of flow meters, ensuring that the flow meter's interior is protected from liquid intrusion is crucial, as it directly affects the flow meter's measurement accuracy and service life. Traditionally, a sealing ring is used between the flow meter's end cap and housing to create a tight seal, serving as a key barrier against liquid penetration. The use of the sealing ring relies on the tight contact it forms between the end cap and housing to block any possible path for external liquids to enter the flow meter's interior.

[0003] However, existing sealing methods have significant limitations. To achieve a stable connection between the sealing ring and the end cap and housing, specific locating grooves are typically required on the end cap or housing to precisely accommodate the sealing ring and ensure its stable position. This design not only increases manufacturing complexity due to the need for precise control of the locating groove's size and position but may also lead to increased material costs, as creating the locating groove often requires additional processing steps. Furthermore, while interference fits enhance the connection's stability to some extent, they also increase assembly difficulty, and prolonged use may result in decreased sealing performance due to material fatigue or stress concentration.

[0004] In summary, while existing sealing connection methods based on sealing rings and limiting grooves meet the basic sealing requirements of flow meters to a certain extent, they still have shortcomings in terms of processing costs, assembly efficiency, and long-term sealing stability. A more efficient and economical sealing solution is urgently needed. Utility Model Content

[0005] The purpose of this application is to provide a sealing structure that is low in cost, has high assembly efficiency, and has high long-term sealing stability.

[0006] The embodiments of this application can be implemented through the following technical solutions:

[0007] A sealing structure includes an elastic seal, a sleeve-type fastening structure, an upper pressing structure, a lower pressing structure, and a peripheral pressing structure. The elastic seal is sleeved on the outer periphery of the sleeve-type fastening structure. The upper pressing structure, the lower pressing structure, and the peripheral pressing structure are respectively pressed and connected to the elastic seal from above, below, and the outer periphery of the elastic seal.

[0008] Furthermore, the upper clamping structure is connected to the outer periphery of the sleeve-type fastening structure, and the bottom height of the upper clamping structure is higher than the bottom height of the sleeve-type fastening structure.

[0009] Further, the circumferential side pressing structure is connected to the outer circumferential side of the lower pressing structure, and the top end height of the circumferential side pressing structure is higher than the top end height of the lower pressing structure.

[0010] Further, the first matching part is connected to the inner circumferential side of the lower pressing structure, and the top end of the first matching part abuts against the bottom end of the sleeve joint type fastening structure.

[0011] Further, the height of the first matching part is lower than the height of the lower pressing structure, and the outer circumferential side of the sleeve joint type fastening structure abuts against the inner circumferential side of the lower pressing structure and the elastic sealing piece.

[0012] Further, the second matching part is connected to the outer circumferential side of the upper pressing structure, and the second matching part and the upper pressing structure form a vacancy part for accommodating the circumferential side pressing structure.

[0013] Further, the third matching part is connected to the outer circumferential side of the circumferential side pressing structure, the top end height of the third matching part is lower than the top end height of the circumferential side pressing structure, and the top end of the third matching part abuts against the bottom end of the second matching part.

[0014] The sealing structure provided by the embodiment of the present application has at least the following beneficial effects:

[0015] The elastic sealing piece in the present application is extruded by the sleeve joint type fastening structure, the upper pressing structure, the lower pressing structure, and the circumferential side pressing structure, and the extrusion connection mode is used to replace the existing connection mode of the limiting groove, which has the advantages of low processing cost, high assembly efficiency, and high long-term sealing stability. In addition, the extrusion connection mode has good adaptability and stability for regular and irregular structures such as square and rhombus.

[0016] The sleeve joint type fastening structure, the upper pressing structure, the lower pressing structure, and the circumferential side pressing structure in the present application abut against the first matching part, the second matching part, and the third matching part layer by layer, which further guarantees the overall connection stability of the sealing structure and guarantees that the elastic sealing piece can realize stable sealing effect through extrusion with other structures without the need for limiting groove limiting. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 An exploded view of the sealing structure in the present application applied to a flowmeter;

[0018] Figure 2 An overall structure diagram of the sealing structure in the present application applied to an end cover in a flowmeter;

[0019] Figure 3A sectional view of the sealing structure in the present application applied to a flowmeter;

[0020] Figure 4 For Figure 3 A local enlarged view of the A area in the middle.

[0021] Reference signs: housing 1, end cover 2, elastic sealing element 31, sleeve joint fastening structure 32, upper pressing structure 33, lower pressing structure 34, circumferential pressing structure 35, first matching part 36, second matching part 37, third matching part 38. DETAILED DESCRIPTION

[0022] Hereinafter, the present application will be further described based on the preferred embodiments and with reference to the accompanying drawings.

[0023] The words in the present specification are used for the purpose of describing the embodiments of the present application, but are not intended to limit the present application. Unless otherwise explicitly specified and limited, if the terms "provided", "connected", "connected" appear, they should be understood broadly, for example, they can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, can be directly connected, or indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be specifically understood.

[0024] In addition, in the description in the embodiments of the present application, various components on the drawing are enlarged or reduced for the convenience of understanding, but this practice is not intended to limit the protection scope of the present application.

[0025] The present application provides a sealing structure for realizing the sealing connection between mechanisms, in order to facilitate the description of the specific application scene of the sealing structure, the present application takes the sealing connection of the sealing structure applied to the housing 1 and the end cover 2 of the flowmeter as an example for description.

[0026] Figure 1 And Figure 3 The exploded view and sectional view of the flowmeter in the present application are shown respectively, as shown in Figure 1 And Figure 3 The outer shell of the flowmeter includes the housing 1 and the end cover 2, and the housing 1 and the end cover 2 are sealingly connected through the sealing structure to ensure that the inside of the flowmeter is free from liquid intrusion.

[0027] Further, as shown in Figures 1-4As shown, the sealing structure includes an elastic sealing piece 31, a sleeve fastening structure 32, an upper compression structure 33, a lower compression structure 34, and a circumferential compression structure 35. The elastic sealing piece 31 is sleeved on the outer circumference of the sleeve fastening structure 32. The upper compression structure 33, the lower compression structure 34, and the circumferential compression structure 35 are respectively extrudedly connected with the elastic sealing piece 31 from above, below, and the outer circumference of the elastic sealing piece 31. The elastic sealing piece 31 in the present application is extruded by the sleeve fastening structure 32, the upper compression structure 33, the lower compression structure 34, and the circumferential compression structure 35. The extruded connection mode replaces the existing connection mode of the limiting groove, has the advantages of low processing cost, high assembly efficiency, and high long-term sealing stability. In addition, the extruded connection mode has good adaptability and stability for regular and irregular structures such as square and rhombus.

[0028] Further, the upper compression structure 33 is connected to the outer circumference of the sleeve fastening structure 32. The bottom end height of the upper compression structure 33 is higher than the bottom end height of the sleeve fastening structure 32. The circumferential compression structure 35 is connected to the outer circumference of the lower compression structure 34. The top end height of the circumferential compression structure 35 is higher than the top end height of the lower compression structure 34. The upper compression structure 33, the lower compression structure 34, the circumferential compression structure 35, and the sleeve fastening structure 32 form a space for accommodating the extruded elastic sealing piece 31, and form a stable sealing space while extruding the elastic sealing piece 31.

[0029] Further, the sealing structure further includes a first matching part 36 connected to the inner circumference of the lower compression structure 34. The top end of the first matching part 36 abuts against the bottom end of the sleeve fastening structure 32. The first matching part 36 supports and holds the sleeve fastening structure 32 from the bottom end of the sleeve fastening structure 32, so as to ensure the support stability of the sleeve fastening structure 32.

[0030] Further, the height of the first matching part 36 is lower than the height of the lower compression structure 34. The outer circumference of the sleeve fastening structure 32 abuts against the elastic sealing piece 31 and the inner circumference of the lower compression structure 34 at the same time, so as to ensure the stability of the connection and support among the sleeve fastening structure 32, the elastic sealing piece 31, and the lower compression structure 34.

[0031] Further, the sealing structure further includes a second matching part 37 connected to the outer circumference of the upper compression structure 33. The second matching part 37 and the upper compression structure 33 form a vacancy part for accommodating the circumferential compression structure 35. The second matching part 37 accommodates and clamps the circumferential compression structure 35 by cooperating with the upper compression structure 33, so as to ensure the support stability of the circumferential compression structure 35 and the upper compression structure 33.

[0032] Further, the sealing structure further comprises a third matching part 38 connected to the outer periphery of the circumferential side pressing structure 35, the top end of the third matching part 38 is higher than the top end of the circumferential side pressing structure 35, and the top end of the third matching part 38 abuts against the bottom end of the second matching part 37. The third matching part 38 supports and lifts the second matching part 37 from the bottom end of the second matching part 37, so as to further ensure the sealing stability of the overall structure while ensuring the stability of the support of the second matching part 37.

[0033] The sleeve joint type fastening structure 32, the upper pressing structure 33, the lower pressing structure 34, the circumferential side pressing structure 35, the first matching part 36, the second matching part 37, and the third matching part 38 in the present application are staggered and abutted layer by layer, which ensures the overall connection stability of the sealing structure and ensures that the elastic sealing element 31 can realize stable sealing effect by being pressed through cooperation with other structures without the need for positioning slots.

[0034] The position and application scenario of the sealing structure will be described below in combination with the specific structure of the flow meter.

[0035] In some specific embodiments of the present application, the sleeve joint type fastening structure 32, the upper pressing structure 33, and the second matching part 37 are end face structures with different bottom end heights connected to the end cover 2 from inside to outside towards the inside of the shell 1, the sleeve joint type fastening structure 32 and the upper pressing structure 33 are in a stepped structure, and a gap is formed between the upper pressing structure 33 and the second matching part 37; the first matching part 36, the lower pressing structure 34, the circumferential side pressing structure 35, and the third matching part 38 are end face structures with different top end heights connected to the shell 1 from inside to outside towards one side of the end cover 2, and the circumferential side pressing structure 35, the lower pressing structure 34, and the first matching part 36 are in a stepped structure. The sleeve joint type fastening structure 32, the upper pressing structure 33, the lower pressing structure 34, and the circumferential side pressing structure 35 form a space for accommodating the elastic sealing element 31, the circumferential side pressing structure 35 is inserted into the gap between the upper pressing structure 33 and the second matching part 37, the second matching part 37 limits the circumferential side pressing structure 35 from the outside, and the first matching part 36 limits the lower pressing structure 34 from the inside, so as to ensure the sealing and stable connection of the end cover 2 and the shell 1.

[0036] In some specific embodiments of the present application, the elastic sealing element 31 is a sealing ring, a rubber pad, or the like.

[0037] The above describes the specific embodiments of the present application in detail, and for those skilled in the art, some improvements and modifications can be made to the present application without departing from the principles of the present application, and these improvements and modifications also belong to the protection scope of the claims of the present application.

Claims

1. A sealing structure comprising an elastic sealing member (31), characterized in that: a sleeve fastening structure (32), an upper pressing structure (33), a lower pressing structure (34) and a circumferential pressing structure (35) are further included, the elastic sealing member (31) is sleeved on the outer periphery of the sleeve fastening structure (32), and the upper pressing structure (33), the lower pressing structure (34) and the circumferential pressing structure (35) are respectively pressed and connected with the elastic sealing member (31) from above, below and the outer periphery of the elastic sealing member (31).

2. The sealing structure according to claim 1, characterized in that: the upper pressing structure (33) is connected to the outer periphery of the sleeve fastening structure (32), and the bottom end height of the upper pressing structure (33) is higher than the bottom end height of the sleeve fastening structure (32).

3. The sealing structure according to claim 1, characterized in that: the circumferential pressing structure (35) is connected to the outer periphery of the lower pressing structure (34), and the top end height of the circumferential pressing structure (35) is higher than the top end height of the lower pressing structure (34).

4. The sealing structure according to claim 1, characterized in that: a first matching part (36) is further included, the first matching part (36) is connected to the inner periphery of the lower pressing structure (34), and the top end of the first matching part (36) abuts against the bottom end of the sleeve fastening structure (32).

5. The sealing structure according to claim 4, characterized in that: the height of the first matching part (36) is lower than the height of the lower pressing structure (34), and the outer periphery of the sleeve fastening structure (32) abuts against the inner periphery of the lower pressing structure (34) and the elastic sealing member (31) at the same time.

6. The sealing structure according to claim 1, characterized in that: a second matching part (37) is further included, the second matching part (37) is connected to the outer periphery of the upper pressing structure (33), and a vacancy part accommodating and clamping the circumferential pressing structure (35) is formed between the second matching part (37) and the upper pressing structure (33).

7. The sealing structure according to claim 6, characterized in that: a third matching part (38) is further included, the third matching part (38) is connected to the outer periphery of the circumferential pressing structure (35), the top end height of the third matching part (38) is lower than the top end height of the circumferential pressing structure (35), and the top end of the third matching part (38) abuts against the bottom end of the second matching part (37). ​ ​ ​ ​ ​ ​ ​

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