Sleeve sealing structure

Abstract

The utility model discloses a sleeve sealing structure which comprises a sleeve body and a valve element, the middle of the sleeve body is divided into an upper sleeve and a lower sleeve, a sealing gap is formed between the upper sleeve and the lower sleeve, a cavity is formed in the upper sleeve and the lower sleeve, the valve element is arranged in the cavity, and a plurality of sealing plates are arranged in the sealing gap in an annular structure. Rubber layers are installed on the inner side faces of the sealing plates and make contact with the outer wall face of the valve element, and sealing sleeves for pressing the sealing plates inwards are installed outside the multiple sealing plates. The valve element is simple in structure, the valve element does not need to be disassembled, after the sealing sleeve is rotated, the sealing plate can drive the sealing layer to be directly taken out outwards, disassembly and assembly are greatly facilitated, and the replacement efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a sleeve sealing structure. Background Art

[0002] Valves are key control components in fluid conveying systems. Their main functions include opening and closing pipelines, controlling flow direction, and regulating and controlling parameters of the conveying medium (such as temperature, pressure, and flow).

[0003] At present, valves generally include a sleeve and an internal valve core. Currently, the sleeve and the valve core are generally sealed by an O-ring. However, the O-ring is installed on the outside of the valve core, and the valve core is installed in the sleeve. The valve core must be disassembled for replacement. This replacement method is more troublesome and affects the replacement efficiency. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a sleeve sealing structure, which can directly complete the installation and disassembly of the sealing ring outside the sleeve, so as to solve the problems raised in the above background technology.

[0005] The utility model is realized through the following technical scheme: a sleeve sealing structure, comprising a sleeve body and a valve core, wherein the sleeve body is divided into two parts in the middle to form an upper sleeve and a lower sleeve, a sealing gap is formed between the upper sleeve and the lower sleeve, a chamber is formed inside the upper sleeve and the lower sleeve, the valve core is arranged in the chamber, a plurality of sealing plates are arranged in an annular structure inside the sealing gap, rubber layers are installed on the inner side surfaces of the sealing plates, the rubber layers are arranged in contact with the outer wall surface of the valve core, and sealing sleeves for pressing the sealing plates inward are installed outside the plurality of sealing plates.

[0006] As a preferred technical solution, the relative surfaces of the upper sleeve and the lower sleeve are both reduced inward to form a fixed portion, and a plurality of connecting plates are installed in an annular structure between the fixed portions of the upper sleeve and the lower sleeve. The fixed portion of the upper sleeve is provided with an external thread, and the inner wall surface of the sealing sleeve facing one end of the upper sleeve is provided with an internal thread. The sealing sleeve is meshed and connected with the external thread on the upper sleeve via the internal thread, and the end of the sealing sleeve away from the internal thread is arranged to abut against the outer side surface of the sealing plate.

[0007] As a preferred technical solution, the sealing plates are all arranged in a fan-shaped structure, adjacent sealing plates are arranged to abut against each other, and the width of the sealing plates matches the width of the sealing gap.

[0008] As a preferred technical solution, a plurality of rubber layers are combined to form a sealing ring.

[0009] As a preferred technical solution, spaces are formed between the connecting plates for the sealing plates to be taken out.

[0010] As a preferred technical solution, the outer circumferential surface of the connecting plate is flush with the outer wall surface of the sleeve body, and the inner side surface of the connecting plate is in contact with the outer circumferential surface of the sealing sleeve.

[0011] As a preferred technical solution, vertical anti-slip patterns are provided on the outer circumferential surface of the sealing sleeve.

[0012] The beneficial effects of the present utility model are as follows: The structure of the present utility model is simple. Without disassembling the valve core, after rotating the sealing sleeve, the sealing plate can drive the sealing layer to be directly taken outwards, which greatly facilitates disassembly and assembly and increases the replacement efficiency. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the present utility model after removing the sealing sleeve;

[0016] Figure 3 It is a schematic diagram of the installation structure of the sealing plate in the present utility model.

[0017] Among them, 1. upper sleeve; 2. lower sleeve; 3. valve core; 4. fixing part; 5. connecting plate; 6. sealing sleeve; 7. sealing plate; 8. sealing layer. Detailed Embodiments

[0018] The following will describe in detail the embodiments of the present utility model. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0019] All the features disclosed in this specification, or all the steps in the disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined in any way.

[0020] Any feature disclosed in this specification (including any additional claims, abstract, and drawings), unless specifically stated, can be replaced by other equivalent or features with similar purposes. That is, unless specifically stated, each feature is only an example of a series of equivalent or similar features.

[0021] As Figure 1 , Figure 2 and Figure 3 shown, a sleeve sealing structure of the present utility model includes a sleeve body and a valve core 3. The middle of the sleeve body is divided into two parts to form an upper sleeve 1 and a lower sleeve 2. A sealing gap is formed between the upper sleeve 1 and the lower sleeve 2, and a chamber is formed inside the upper sleeve 1 and the lower sleeve 2. The valve core 3 is arranged in the chamber. A plurality of sealing plates 7 are arranged in a ring structure inside the sealing gap. Rubber layers are installed on the inner side surfaces of the sealing plates 7, and the rubber layers are all in contact with the outer wall surface of the valve core 3. A sealing sleeve 6 for pressing the sealing plates 7 inward is installed outside the plurality of sealing plates 7.

[0022] In this embodiment, the opposite surfaces of the upper sleeve 1 and the lower sleeve 2 are both narrowed inward to form fixing parts 4. A plurality of connecting plates 5 are arranged in a ring structure between the fixing parts 4 of the upper sleeve 1 and the lower sleeve 2. External threads are provided on the fixing part 4 of the upper sleeve 1, and internal threads are provided on the inner wall surface of the end of the sealing sleeve 6 facing the upper sleeve 1. The sealing sleeve 6 is connected to the external threads on the upper sleeve 1 by meshing the internal threads. One end of the sealing sleeve 6 away from the internal threads is in contact with the outer side surface of the sealing plate 7.

[0023] In this embodiment, the sealing plates 7 are all arranged in a fan-shaped structure, and adjacent sealing plates 7 are in contact with each other. The widths of the sealing plates 7 are all matched with the width of the sealing gap.

[0024] In this embodiment, a plurality of rubber layers are combined to form a sealing ring, and the sealing performance between the sleeve body and the valve core is increased through the sealing ring; spaces for the sealing plates 7 to be taken out outward are formed between the connecting plates 5.

[0025] In this embodiment, the outer circumferential surface of the connecting plate 5 is flush with the outer wall surface of the sleeve body, and the inner side surface of the connecting plate 5 is in contact with the outer circumferential surface of the sealing sleeve 6, which increases the stability after the sealing sleeve is installed and does not affect the installation of the sleeve.

[0026] In this embodiment, vertical anti-slip lines are provided on the outer circumferential surface of the sealing sleeve 6, and the friction when contacting with a tool or a hand is increased through the anti-slip lines, so as to better push the rotation of the sealing sleeve.

[0027] When in use for a long time and the rubber layer needs to be replaced, the sealing sleeve can be rotated to make the sealing sleeve move upward along the thread until the sealing sleeve moves away from the outside of the sealing plate. At this time, the sealing plate can be directly taken out outward along the space between the connecting plates. Among them, the sealing plates not directly facing the space can be toggled until the space is opposite and taken out outward. Equipment such as a magnet can be used during the taking-out process. The above disassembly process does not require taking out the valve core, which facilitates the operation;

[0028] During installation, the sealing plate can be directly inserted into the sealing gap until they are close to each other and abut against each other, and the sealing layer can abut against the valve core, thereby ensuring the sealing between the valve core and the sleeve body, and as the sealing sleeve moves downward, the outer side of the sealing plate can be blocked to avoid outward movement, and the sealing gap can be sealed by the sealing plate, the sealing sleeve and the rubber layer.

[0029] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. A sleeve sealing structure, characterized in that: It includes a sleeve body and a valve core (3). The middle of the sleeve body is divided into two parts to form an upper sleeve (1) and a lower sleeve (2). A sealing gap is formed between the upper sleeve (1) and the lower sleeve (2). Chambers are formed inside the upper sleeve (1) and the lower sleeve (2). The valve core (3) is arranged in the chambers. A plurality of sealing plates (7) are arranged in a ring structure inside the sealing gap. Rubber layers are installed on the inner side surfaces of the sealing plates (7), and the rubber layers are all in contact with the outer wall surface of the valve core (3). A sealing sleeve (6) for pressing the sealing plates (7) inward is installed outside the plurality of sealing plates (7).

2. The sleeve sealing structure according to claim 1, characterized in that: The opposite surfaces of the upper sleeve (1) and the lower sleeve (2) both shrink inward to form fixing parts (4). A plurality of connecting plates (5) are installed in a ring structure between the fixing parts (4) of the upper sleeve (1) and the lower sleeve (2). External threads are provided on the fixing parts (4) of the upper sleeve (1). Internal threads are provided on the inner wall surface of the end of the sealing sleeve (6) facing the upper sleeve (1). The sealing sleeve (6) is engaged and connected to the external threads on the upper sleeve (1) through the internal threads. The end of the sealing sleeve (6) away from the internal threads is in contact with the outer side surface of the sealing plate (7).

3. The sleeve sealing structure according to claim 1, characterized in that: The sealing plates (7) are all arranged in a fan-shaped structure, and adjacent sealing plates (7) are in contact with each other. The widths of the sealing plates (7) are all matched with the width of the sealing gap.

4. The sleeve sealing structure according to claim 1, characterized in that: The plurality of rubber layers are combined to form a sealing ring.

5. The sleeve sealing structure according to claim 2, characterized in that: Spaces for taking out the sealing plates (7) outward are formed between the connecting plates (5).

6. The sleeve sealing structure according to claim 2, wherein: The outer circumferential surfaces of the connecting plates (5) are flush with the outer wall surface of the sleeve body, and the inner side surfaces of the connecting plates (5) are in contact with the outer circumferential surface of the sealing sleeve (6).

7. The sleeve sealing structure according to claim 1, characterized in that: Vertical anti-slip patterns are provided on the outer circumferential surface of the sealing sleeve (6).

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