Valve cavity channel sealing structure of ball valve

Abstract

The utility model discloses a valve cavity channel sealing structure of a ball valve, which comprises a gland structure, the gland structure comprises a group of symmetrically arranged ring frames, gland plates movably connected to the inner sides of the ring frames, a plurality of support blocks fixedly connected to the edges of the outer sides of the ring frames at equal intervals, and movable springs of which the end parts are respectively connected with the support blocks and the gland plates; the end part of the sealing gasket is attached to the inner side of one group of gland plates; and the fastening structure comprises birdmouths which are formed in the central position of the ring frame at equal intervals in a penetrating manner. The sealing gasket aims to solve the problems that an existing sealing gasket for sealing a valve cavity of a ball valve is directly sleeved and fixed in a connecting gap between a valve rod and the valve cavity to achieve the sealing effect, in order to improve the using effect of the sealing gasket, a limiting frame is additionally arranged on the periphery of the sealing gasket, but when the sealing gasket is maintained and replaced subsequently, the limiting frame needs to be detached, and the sealing effect is poor. And time and labor are wasted.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valve cavity sealing, in particular to a valve cavity channel sealing structure of a ball valve. Background Art

[0002] A ball valve is a commonly used fluid control valve. The valve chamber is an important component of the ball valve and is used for the installation of the valve stem. A sealing gasket is generally provided to seal the connecting gap between the valve stem and the valve chamber.

[0003] However, it still has the following disadvantages in actual use:

[0004] The sealing gasket used to seal the valve cavity of the existing ball valve is directly sleeved and fixed in the connecting gap between the valve stem and the valve cavity to achieve a sealing effect. In order to improve the use effect of the sealing gasket, a peripheral limit frame is added to the sealing gasket. However, when the sealing gasket is subsequently inspected and replaced, the limit frame needs to be disassembled, which is time-consuming and labor-intensive. Utility Model Content

[0005] The purpose of the utility model is to provide a valve cavity channel sealing structure of a ball valve to solve the problem raised in the above-mentioned background technology that the sealing gasket used for sealing the valve cavity of the existing ball valve is directly sleeved and fixed in the connecting gap between the valve stem and the valve cavity to achieve a sealing effect, and in order to improve the use effect of the sealing gasket, a peripheral limit frame is added to the sealing gasket, but when the sealing gasket is subsequently inspected and replaced, the limit frame needs to be disassembled, which is time-consuming and labor-intensive.

[0006] Technical Solution

[0007] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0008] The utility model is a valve cavity channel sealing structure of a ball valve, comprising:

[0009] A gland structure, the gland structure comprising a group of symmetrically arranged ring frames, a gland plate movably connected to the inner side of the ring frames, a plurality of support blocks equidistantly fixedly connected to the outer edge of the ring frames, and a movable spring whose ends are respectively connected to the support blocks and the gland plate;

[0010] A sealing gasket, the end of which is fitted with the inner side of a group of gland plates;

[0011] The fastening structure comprises receiving interfaces which are equidistantly penetrated and opened in the center of the ring frame.

[0012] Furthermore, the ring frame and the contact surface of the gland plate are provided with openings at equal intervals, and a support is fixedly connected to the rear end of the opening;

[0013] A movable frame is movably sleeved on the middle part of the support column, and one end of the movable frame is fixedly connected to the front end in the opening.

[0014] Furthermore, the movable frame is in a shape of a work piece, and the movable frame is sleeve-connected with the support column through a through opening at the middle end of one end.

[0015] Furthermore, a step is arranged on the inner side of the ring frame, and the inner edge of the step is in conflict with the outer edge of the gland plate.

[0016] Furthermore, the fastening structure also includes a receiving tube sleeved and connected in the receiving interface and a receiving column with an end extending out of the receiving tube.

[0017] Furthermore, the length of the receiving column is five times the length of the receiving tube, and the end of the receiving tube extends out of the receiving interface.

[0018] Beneficial Effects

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] 1. The utility model is provided with a group of upper and lower symmetrical pressure cover plates, which act on the upper and lower ends of the sealing gasket to limit the structure of the sealing gasket and improve its sealing performance. The pressure cover plate and the connected ring frame are movably connected and movably limited by a movable spring. While meeting the limitation on the sealing gasket, the angle of the pressure cover plate can be adjusted to facilitate the disassembly and assembly of the sealing gasket, which is convenient for use.

[0021] 2. Based on beneficial effect 1, multiple receiving interfaces are opened in the middle of the ring frame, and with the help of receiving tubes and receiving columns, the structure of multiple sealing gaskets accommodated inside a set of pressure cover plates can be limited, thereby improving its applicability and functionality to meet the needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is the appearance diagram of the utility model;

[0024] Figure 2 This is a schematic diagram of the gland structure of the utility model;

[0025] Figure 3 For the utility model Figure 1 Enlarged view of point A in the middle;

[0026] Figure 4 This is a diagram of the storage state of multiple sealing pads of the utility model.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 11. Ring frame; 12. Gland plate; 13. Pillar; 14. Movable frame; 15. Support block; 16. Movable spring;

[0029] 2. Sealing gasket;

[0030] 31. Socket interface; 32. Socket tube; 33. Socket column. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0033] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] Embodiment 1

[0035] See also Figure 1-4 As shown, this embodiment is a valve cavity channel sealing structure of a ball valve, comprising:

[0036] The gland structure includes a group of symmetrically arranged ring frames 11, a gland plate 12 movably connected to the inner side of the ring frames 11, a plurality of support blocks 15 equidistantly fixedly connected to the outer edge of the ring frames 11, and a movable spring 16 whose ends are respectively connected to the support blocks 15 and the gland plate 12;

[0037] The ring frame 11 is used to install the gland plate 12. The gland plate 12 acts on the upper and lower ends of the sealing gasket 2 to limit its structure and improve the sealing effect. The support block 15 is used to install the movable spring 16. The movable spring 16 is used to limit the position of the gland plate 12 whose angle is movable and adjustable.

[0038] The contact surfaces of the ring frame 11 and the gland plate 12 are equidistantly provided with openings, and the rear ends of the openings are fixedly connected with support pillars 13;

[0039] The middle part of the support 13 is movably sleeved with a movable frame 14, and one end of the movable frame 14 is fixedly connected to the front end of the opening;

[0040] The opening is used to receive and install the support 13, and the support 13 is used to install the movable frame 14. One end of the movable frame 14 is movably connected to the support 13, and the other end is fixed to the gland plate 12, which can meet the angular movement requirements of the gland plate 12.

[0041] The movable frame 14 is in the shape of a work piece, and the movable frame 14 is sleeve-connected with the support 13 through a through opening at the middle end of one end;

[0042] The work-shaped setting is conducive to the connection between the end of the movable frame 14 and the support 13 and the pressure cover plate 12, and the through hole satisfies the movable sleeve connection between one end of the movable frame 14 and the support 13;

[0043] A step is arranged on the inner side of the ring frame 11, and the inner edge of the step is in conflict with the outer edge of the gland plate 12;

[0044] A sealing gasket 2, the end of which is fitted to the inner side of a set of gland plates 12;

[0045] The step is connected to the inner edge of the sealing gasket 2, and the interference setting between the two can limit the position of the movable gland plate 12, which can facilitate disassembly and assembly while meeting the structural limitation of the sealing gasket 2;

[0046] Working principle:

[0047] After the inner edge of the gland plate 12 is fitted on the inner side of the ring frame 11, the other end of the movable frame 14 fixed to the gland plate 12 is movably connected to the middle of the support 13, and a set of outer edges of the ring frame 11 are fixedly connected to the upper and lower designated positions of the inner wall of the valve cavity;

[0048] At this time, a sealing gasket 2 is provided inside a set of upper and lower gland plates 12, and the inner side of a set of gland plates 12 abuts against the upper and lower ends of the sealing gasket 2 to define its structure and be used for sealing the valve cavity channel;

[0049] When the sealing gasket 2 needs to be disassembled, repaired, or replaced later, an upward force is directly applied to the sealing gasket 2 located inside a group of gland plates 12, and the angle of the movably connected gland plates 12 can be adjusted to remove the sealing gasket 2 to be repaired or replaced;

[0050] This step can facilitate the disassembly and assembly of the sealing gasket 2 while meeting the requirements for the sealing gasket 2, thus facilitating its use.

[0051] Embodiment 2

[0052] See also Figure 1-4 As shown, this embodiment is based on the above embodiment 1 and also includes:

[0053] The fastening structure includes a receiving interface 31 which is equidistantly penetrated and opened at the central position of the ring frame 11;

[0054] The receiving port 31 receives the receiving tube 32, and the inner diameter is larger than the outer diameter of the receiving tube 32, so that another specification of receiving column 33 structure can be used for fixing;

[0055] The fastening structure also includes a receiving tube 32 sleeved and connected to the receiving port 31 and a receiving column 33 whose end extends out of the receiving tube 32;

[0056] The length of the receiving column 33 is five times the length of the receiving tube 32, and the end of the receiving tube 32 extends out of the receiving port 31;

[0057] The receiving tube 32 receives and fixes the receiving column 33, and the receiving column 33 forms a limiting isolation structure on the inner side of the upper and lower ring frames 11, which can limit the structure of the multiple sealing pads 2 received, which is convenient for application;

[0058] Working principle:

[0059] After the multiple sealing gaskets 2 to be stored are placed inside the upper and lower ring frames 11, that is, the sealing gaskets 2 at the upper and lower ends are in contact with the inner side of the gland plate 12;

[0060] At this time, the receiving tube 32 is sleeved and fixed in the receiving port 31, and one end of the receiving column 33 is placed in the upper receiving tube 32. Under the application of downward force, the end of the receiving column 33 extends out of the lowermost receiving tube 32, and the structure of the multiple sealing pads 2 on the inner side is limited.

[0061] This step improves its applicability and functionality to meet the needs.

[0062] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A valve cavity channel sealing structure of a ball valve, characterized in that: include: A gland structure, the gland structure comprising a group of symmetrically arranged ring frames (11), a gland plate (12) movably connected to the inner side of the ring frames (11), a plurality of support blocks (15) equidistantly fixedly connected to the outer edge of the ring frames (11), and a movable spring (16) whose ends are respectively connected to the support blocks (15) and the gland plate (12); A sealing gasket (2), the end of which is arranged to fit the inner side of a set of gland plates (12); The fastening structure comprises a receiving interface (31) which is equidistantly penetrated and opened at the central position of the ring frame (11).

2. A valve cavity channel sealing structure of a ball valve according to claim 1, characterized in that: The contact surfaces of the ring frame (11) and the pressure cover plate (12) are provided with openings at equal intervals, and the rear ends of the openings are fixedly connected with pillars (13); A movable frame (14) is movably sleeved in the middle of the support (13), and one end of the movable frame (14) is fixedly connected to the front end in the opening.

3. The valve cavity channel sealing structure of a ball valve according to claim 2, characterized in that: The movable frame (14) is in the shape of a workpiece, and the movable frame (14) is sleeve-connected with the support column (13) through a through opening at the middle end of one end.

4. The valve cavity channel sealing structure of a ball valve according to claim 1, characterized in that: A step is arranged on the inner side of the ring frame (11), and the inner edge of the step abuts against the outer edge of the gland plate (12).

5. The valve cavity channel sealing structure of a ball valve according to claim 1, characterized in that: The fastening structure further comprises a receiving tube (32) sleeved and connected in the receiving interface (31) and a receiving column (33) with an end extending out of the receiving tube (32).

6. The valve cavity channel sealing structure of a ball valve according to claim 5, characterized in that: The length of the receiving column (33) is five times the length of the receiving tube (32), and the end of the receiving tube (32) extends out of the receiving interface (31).

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