A sealing structure

Abstract

The utility model discloses a sealing structure, including being established on the outer thread pipe joint of jar body, the outer thread pipe joint is connected with the sealing cover of thread, and the bottom of sealing cover is equipped with fixed pressure ring, the outer thread pipe joint is equipped with the fixed stop pipe of being same coaxial line with it setting, and the inner wall of fixed stop pipe is distributed with internal thread, the top of fixed pressure ring is equipped with movable pressure ring, and the bottom of movable pressure ring is equipped with movable stop pipe of being distributed with external thread outside, and movable stop pipe is connected on fixed stop pipe with thread, and the elastic member of being covered on sealing cover is equipped between movable pressure ring and fixed pressure ring, the top of movable stop pipe is equipped with the movable piece of being adjacent interval angle equal and making upward extension, and the top of movable piece has the limit tooth, and the bottom of movable pressure ring is equipped with the tooth groove of being matched with limit tooth one to one. This sealing structure has the characteristics of stable structure, reliable sealing, and the overall function is perfect, and the practicality is strong.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering technology, and more specifically, to a sealing structure. Background Technology

[0002] Traditional sealing methods, which involve installing a sealing ring followed by a screw-on sealing cap, have limitations. When this sealing structure is exposed to continuous vibration, the threaded connection can easily loosen, leading to a decrease or loss of sealing performance, significant safety hazards, and overall poor results. Therefore, this invention proposes a new sealing structure. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a sealing structure that is structurally stable and has reliable sealing.

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows: The sealing structure involved in this utility model includes an externally threaded pipe joint provided on the tank body, a sealing cap threadedly connected to the externally threaded pipe joint, a fixed pressure ring provided at the bottom of the sealing cap, a fixed stop tube arranged coaxially with the externally threaded pipe joint, an internal thread on the inner wall of the fixed stop tube, a movable pressure ring provided above the fixed pressure ring, a movable stop tube with external threads provided at the bottom of the movable pressure ring, the movable stop tube being threadedly connected to the fixed stop tube, and an elastic element fitted on the sealing cap between the movable pressure ring and the fixed pressure ring.

[0005] The present invention is further configured such that: the top periphery of the fixed stop tube is provided with a number of adjacent elastic pieces with equal included angles and extending upwards, the top of the elastic pieces has limiting teeth, and the bottom of the movable pressure ring is provided with tooth grooves that match the limiting teeth one by one.

[0006] The present invention is further configured such that: the top of the fixed stop tube is provided with an annular groove for embedding the spring piece, and the limiting tooth extends out of the groove of the annular groove.

[0007] The present invention is further configured such that: a rubber ring is fitted on the external threaded pipe joint between the tank body and the fixing pressure ring.

[0008] The present invention is further configured such that the sealing cover is lined with a sealing sheet.

[0009] The present invention is further configured such that the outer contour of the movable pressure ring is a non-rotational cylindrical shape.

[0010] The present invention is further configured such that the elastic element is a compression spring with one end abutting against the movable pressure ring and the other end abutting against the fixed pressure ring.

[0011] In summary, the present invention has the following beneficial effects: the sealing structure involved in the present invention, by secondary reinforcement of the tightened sealing cover, not only prevents loosening, but also makes the structure suitable for use in harsh working conditions, with stable structure, reliable sealing, complete overall function, and strong practicality. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a partial structural schematic diagram of the present invention;

[0014] Figure 3 yes Figure 1 Enlarged structural diagram of section A in the middle. Detailed Implementation

[0015] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of this utility model, and not for limiting the patent claims of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0016] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0017] Example 1

[0018] See Figures 1 to 3 As shown, the sealing structure involved in this embodiment includes an externally threaded pipe joint 2 provided on the tank body 1. A sealing cap 3 is threadedly connected to the externally threaded pipe joint 2. A fixed pressure ring 301 is provided at the bottom of the sealing cap 3. A fixed stop tube 4 is provided on the outside of the externally threaded pipe joint 2 and is arranged coaxially with it. The inner wall of the fixed stop tube 4 is provided with internal threads. A movable pressure ring 5 is provided above the fixed pressure ring 301. A movable stop tube 501 with external threads is provided at the bottom of the movable pressure ring 5. The movable stop tube 501 is threadedly connected to the fixed stop tube 4. An elastic element 6 is provided between the movable pressure ring 5 and the fixed pressure ring 301 and is sleeved on the sealing cap. The elastic element 6 is a compression spring with one end abutting against the movable pressure ring and the other end abutting against the fixed pressure ring.

[0019] Furthermore, the top periphery of the fixed stop tube 4 is provided with several adjacent spring pieces 401 with equal included angles and extending upwards. The top of the spring piece 401 has a limiting tooth 402, and the bottom of the movable pressure ring 5 is provided with a tooth groove 502 that matches the limiting tooth one by one.

[0020] In this embodiment, the sealing cap 3 is first threaded onto the external threaded pipe fitting 2, then the elastic element 6 is fitted onto the sealing cap 3, and then the movable pressure ring 5 is screwed on until the elastic element 6 is compressed and the limiting teeth 402 extend into the tooth groove 502. At this point, the sealing cap 3 is reinforced a second time and its circumferential rotation is restricted. The compressed elastic element 6 generates a reaction force at both ends, causing it to press tightly between the fixed pressure ring 301 and the movable pressure ring 5, thus giving the sealing cap 3 anti-vibration and anti-loosening functions. In addition, the limiting teeth 402 on the elastic spring 401, under the action of the tooth groove 502, can circumferentially limit the tightened movable pressure ring 5, making the overall structure stable and reliable, and the sealing effect excellent.

[0021] Example 2

[0022] See Figures 1 to 3 As shown, the sealing structure involved in this embodiment is further configured based on embodiment 1, wherein the top of the fixed stop tube 4 is provided with an annular groove 403 for embedding the spring piece, and the limiting tooth 402 extends out of the groove of the annular groove 403.

[0023] In this embodiment, the annular groove 403 is used to embed the spring 401 and the limiting tooth 402, thereby reducing the height.

[0024] Example 3

[0025] See Figures 1 to 3 As shown, the sealing structure involved in this embodiment is further configured, based on embodiment 1, with a rubber ring 7 provided between the tank body and the fixed pressure ring on the external threaded pipe joint 2.

[0026] Furthermore, the sealing cover 3 is lined with a sealing sheet 8.

[0027] In this embodiment, the rubber ring 7 and the sealing sheet 8 are used to enhance the sealing effect.

[0028] Example 4

[0029] See Figures 1 to 3 As shown, the sealing structure involved in this embodiment is further configured, based on embodiment 1, such that the outer contour of the movable pressure ring 5 is a non-rotational cylindrical shape.

[0030] In this embodiment, by setting the outer contour of the movable pressure ring 5 to a non-rotating cylindrical structure, it is convenient to use tools such as wrenches to rotate the movable pressure ring 5, making it easy to screw on and disassemble.

[0031] The sealing structure involved in this utility model provides secondary reinforcement to the tightened sealing cap, which not only prevents loosening but also makes the structure suitable for use in harsh working conditions. It is structurally stable, has a good sealing effect, complete overall functions, and is highly practical.

[0032] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the actual orientation or positional relationship shown. They 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 element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the embodiments and according to the specific circumstances.

[0033] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A sealing structure, comprising an externally threaded pipe joint disposed on a tank body, characterized in that: The external threaded pipe joint is threaded with a sealing cap, and a fixed pressure ring is provided at the bottom of the sealing cap. A fixed stop tube is provided on the outside of the external threaded pipe joint, and the inner wall of the fixed stop tube is provided with internal threads. A movable pressure ring is provided above the fixed pressure ring, and a movable stop tube with external threads is provided at the bottom of the movable pressure ring. The movable stop tube is threaded to the fixed stop tube. An elastic element is provided between the movable pressure ring and the fixed pressure ring, which is fitted onto the sealing cap.

2. The sealing structure according to claim 1, characterized in that: The top periphery of the fixed stop tube is provided with several adjacent spring pieces with equal included angles and extending upwards. The top of the spring pieces has limiting teeth, and the bottom of the movable pressure ring is provided with tooth grooves that match the limiting teeth one by one.

3. The sealing structure according to claim 2, characterized in that: The top of the fixed stop tube is provided with an annular groove for embedding the spring clip, and the limiting tooth extends out of the groove.

4. The sealing structure according to any one of claims 1-3, characterized in that: The external threaded pipe fitting is fitted with a rubber ring placed between the tank body and the fixed pressure ring.

5. The sealing structure according to claim 1, characterized in that: The sealing cover is lined with a sealing sheet.

6. The sealing structure according to claim 1, characterized in that: The outer contour of the movable pressure ring is a non-rotating cylindrical shape.

7. The sealing structure according to claim 1, characterized in that: The elastic element is a compression spring with one end abutting against the movable pressure ring and the other end abutting against the fixed pressure ring.

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