Ball valve with multiple sealing structures

Abstract

The utility model relates to the technical field of ball valves, in particular to a ball valve with a multi-sealing structure, which comprises a valve body, a connecting pipeline, a flange plate I and a flange plate II, a plurality of fixing bolts are inserted into the outer ring of the flange plate I, the right parts of the fixing bolts are in threaded connection with fixing nuts, a rubber convex ring is arranged on the right side of the valve body, and the rubber convex ring is connected with the flange plate II. An auxiliary groove is formed in the outer side of the rubber convex ring, and a sealing ring is installed on the inner wall of the auxiliary groove. The ball valve has the beneficial effects that in the mounting process of the ball valve and a connecting pipeline, the rubber convex ring is pushed to be inserted into the inner wall of the inserting groove, so that the rubber convex ring is deformed due to extrusion, after the rubber convex ring is completely inserted, the sealing ring is tightly matched with the wedging groove, and the sealing ring is effectively prevented from being deformed and damaged during use, so that the sealing performance is improved; the rubber pad is arranged between the first flange plate on the right side and the second flange plate, secondary sealing is achieved, the sealing performance between the ball valve and the connecting pipeline is further enhanced, and therefore the using performance and the sealing effect of the ball valve are improved.

Description

Technical Field

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

[0002] As the requirements for fluid control in the industrial field continue to increase, the sealing performance and reliability of ball valves, as a widely used valve type, have received great attention. Traditional ball valves usually use a single sealing ring to achieve the connection and sealing between the pipeline. However, this single sealing ring design exposes many shortcomings in actual application.

[0003] In the prior art, traditional ball valves usually rely on a single sealing ring to ensure sealing when connected to pipelines. However, this design is prone to deformation or even damage under conditions of high pressure, high temperature or corrosive media, thereby weakening its sealing effectiveness. This not only reduces the accuracy of fluid control and the stability of the system, but also leads to leakage risks. In addition, it is easily subjected to uneven stress during installation, resulting in uneven force on the sealing surface, which in turn affects the sealing effect. Especially in the case of long-term use or frequent disassembly and assembly, the sealing ring is prone to wear and fatigue, further aggravating the decline in sealing performance.

[0004] Therefore, a ball valve with a multiple sealing structure is needed to solve the problem that the existing ball valve adopts a single sealing ring during installation and use, which is easily deformed, resulting in low sealing performance, thereby affecting the normal use of the ball valve. Utility Model Content

[0005] The purpose of the present utility model is to provide a ball valve with a multiple sealing structure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a ball valve with a multiple sealing structure, comprising a valve body, a connecting pipe, a flange plate one and a flange plate two, the outer ring of the flange plate one being plugged with a plurality of fixing bolts, the right part of the fixing bolts being threadedly connected with a fixing nut, a rubber convex ring being installed on the right side of the valve body, an auxiliary groove being provided on the outer side of the rubber convex ring, a sealing ring being installed on the inner wall of the auxiliary groove, a plug-in groove being provided on the left end of the connecting pipe, and a fitting groove being provided on the outer side of the plug-in groove.

[0007] Preferably, a plug-in portion is installed on the right side of the rubber convex ring, a rubber pad is installed on the right end of the valve body, and a positioning groove is opened on the right side of the plug-in groove.

[0008] Preferably, the plug-in portion is plugged into the inner wall of the positioning groove, the rubber pad is in a folded state, and the rubber pad is in contact with the second flange.

[0009] Preferably, a plurality of rubber clamping balls are installed on the outer ring side of the rubber pad, and a plurality of clamping grooves are opened on the right end of the valve body.

[0010] Preferably, the rubber balls are inserted into the inner wall of the slot, and a plurality of rubber balls are distributed in a ring shape with the axis of the rubber convex ring as the center.

[0011] Preferably, the right side of the rubber ball fits with the left side of the second flange and is squeezed and deformed by the second flange.

[0012] Preferably, the rubber convex ring is inserted into the inner wall of the plug-in groove, and the rubber convex ring is in an extruded deformation state, the sealing ring is clamped on the inner wall of the fitting groove, the flange one and flange two on the right side are fitted together, and the left side of the fixing nut is fitted with the right side of flange two.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The ball valve with multiple sealing structures proposed by the utility model pushes the rubber convex ring into the inner wall of the plug-in groove during the installation process of the ball valve and the connecting pipe, causing it to deform due to extrusion. After it is fully inserted, the sealing ring is forced to fit closely with the fitting groove, effectively preventing the sealing ring from being deformed and damaged during use, thereby improving the sealing performance. In addition, the rubber gasket is arranged between the right-side flange plate 1 and the right-side flange plate 2 to achieve secondary sealing, further enhancing the sealing between the ball valve and the connecting pipe, thereby improving the use performance and sealing effect of the ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the rubber pad of the utility model;

[0017] Figure 3 This is a schematic diagram of the rubber ball structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the connecting pipeline structure of the utility model;

[0019] Figure 5 for Figure 4 Structural cross-section at AA in the middle;

[0020] Figure 6 for Figure 5 A magnified view of the structure at point B in the middle;

[0021] Figure 7 This is a schematic diagram of the structure of the plug-in portion of the utility model;

[0022] Figure 8 This is a schematic diagram of the structure of the valve body of the utility model when it is not in use.

[0023] In the figure: 1. Valve body; 2. Fixing bolt; 3. Fixing nut; 4. Connecting pipe; 5. Rubber gasket; 6. Rubber clamping ball; 7. Rubber convex ring; 8. Sealing ring; 9. Fitting groove; 10. Positioning groove; 11. Plug-in groove; 12. Plug-in part; 13. Auxiliary groove; 14. Clamping groove; 15. Flange 1; 16. Flange 2. DETAILED DESCRIPTION

[0024] In order to clearly and completely describe the purpose and technical solution of the present invention and make its advantages more clearly understood, the following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention and are not intended to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Example 1: Please refer to Figures 1-8 The utility model provides a technical solution: a ball valve with a multiple sealing structure, including a valve body 1, a connecting pipe 4, a flange 15 and a flange 2 16, the outer ring of the flange 15 is plugged with a plurality of fixing bolts 2, the right part of the fixing bolt 2 is threadedly connected with a fixing nut 3, a rubber convex ring 7 is installed on the right side of the valve body 1, an auxiliary groove 13 is opened on the outer side of the rubber convex ring 7, a sealing ring 8 is installed on the inner wall of the auxiliary groove 13, a plug-in groove 11 is opened on the left end of the connecting pipe 4, and a fitting groove 9 is opened on the outer side of the plug-in groove 11; the rubber convex ring 7 is plugged into the plug-in groove 11. The inner wall, and the rubber convex ring 7 is in an extruded deformation state, the sealing ring 8 is clamped on the inner wall of the fitting groove 9, so that when the rubber convex ring 7 is inserted into the inner wall of the plug-in groove 11, the sealing ring 8 is driven to fit closely with the inner wall of the fitting groove 9, thereby preventing the sealing ring 8 from deforming. At the same time, it can also improve the sealing performance of the valve body 1, and the right side flange 15 fits with the flange 2 16, and the left side of the fixing nut 3 fits with the right side of the flange 2 16, so that the right side flange 15 and the flange 2 16 are installed and fixed by the cooperation between the fixing bolt 2 and the fixing nut 3.

[0026] First, drive the rubber convex ring 7 to insert into the inner wall of the plug-in groove 11. At this time, when the rubber convex ring 7 is fully inserted into the inner wall of the plug-in groove 11, it will drive the sealing ring 8 to fit tightly with the inner wall of the fitting groove 9, thereby preventing the sealing ring 8 from deforming during use and affecting the sealing performance of the installation between the valve body 1 and the connecting pipe 4. Then, use the cooperation between the fixing bolt 2 and the fixing nut 3 to install and fix the right flange 15 and the flange 2 16, thereby realizing multiple seals in the connection between the valve body 1 and the connecting pipe 4, thereby improving the sealing performance between the two and preventing leakage.

[0027] Example 2: On the basis of Example 1, in order to further improve the sealing performance, a plug-in portion 12 is installed on the right side of the rubber convex ring 7, a rubber gasket 5 is installed on the right end of the valve body 1, and a positioning groove 10 is opened on the right side of the plug-in groove 11; the plug-in portion 12 is inserted into the inner wall of the positioning groove 10, the rubber gasket 5 is in a folded state, and the rubber gasket 5 is fitted with the second flange 16, so that after the rubber gasket 5 is folded outward, the second flange 16 is fitted with the right side flange 15, and at the same time, after being fixed between the fixing bolt 2 and the fixing nut 3, a secondary seal is achieved, thereby improving the connection sealing between the valve body 1 and the connecting pipe 4 without the aid of an additional sealing gasket.

[0028] First, drive the rubber convex ring 7 to insert into the inner wall of the plug-in groove 11, and use the plug-in part 12 to insert into the inner wall of the positioning groove 10 for positioning to prevent the rubber convex ring 7 from shifting during insertion. Since a rubber pad 5 is installed on the right side of the valve body 1, at this time, fold the rubber pad 5 outward and let one side fit against the left side of the flange 2 16. Then, use the cooperation between the fixing bolt 2 and the fixing nut 3 to install and fix the right flange 15 and the flange 2 16, thereby improving the sealing of the connection between the valve body 1 and the connecting pipe 4.

[0029] Example 3: On the basis of Example 2, in order to protect the sealing ring 8 when not in use, prevent it from being damaged and affecting the sealing performance, and facilitate opening for use, multiple rubber clamping balls 6 are installed on the outer ring side of the rubber pad 5, and multiple clamping grooves 14 are opened at the right end of the valve body 1; the rubber clamping balls 6 are inserted into the inner wall of the clamping groove 14, and the multiple rubber clamping balls 6 are distributed in a ring shape with the axis of the rubber convex ring 7 as the center of the circle, so that the rubber clamping balls 6 can be used to fix the folded rubber pad 5 to prevent it from resetting; the right side of the rubber clamping ball 6 is in contact with the left side of the flange 2 16, and is squeezed and deformed by the flange 2 16, thereby increasing the sealing performance of the installation between the valve body 1 and the connecting pipe 4.

[0030] Before installing the valve body 1 and the connecting pipe 4, first fold the rubber gasket 5 outward, and drive the multiple rubber cards 6 on its outside to be inserted into the inner wall of the card groove 14 one by one, so as to fix the position of the rubber gasket 5 and prevent it from resetting. Then the flange 2 16 and the right flange 1 15 can be fitted together and installed, and the rubber card ball 6 can be squeezed and pushed to deform, thereby increasing the sealing of the connection between the valve body 1 and the connecting pipe 4. When disassembly is required, pull the rubber card ball 6 out of the card groove 14, so that the rubber gasket 5 is reset and covered on the outside of the sealing ring 8, thereby preventing the sealing ring 8 from being damaged, which would lead to a decrease in sealing performance, thereby improving the overall use effect of the valve body 1.

[0031] During actual use, first drive the rubber convex ring 7 to insert into the inner wall of the plug-in groove 11, and use the plug-in part 12 to insert into the inner wall of the positioning groove 10 for positioning to prevent the rubber convex ring 7 from shifting during insertion. At this time, when the rubber convex ring 7 is fully inserted into the inner wall of the plug-in groove 11, it will drive the sealing ring 8 to fit tightly with the inner wall of the fitting groove 9, thereby preventing the sealing ring 8 from deforming during use and affecting the sealing performance of the installation between the valve body 1 and the connecting pipe 4. Moreover, since a rubber gasket 5 is installed on the right side of the valve body 1, at this time, the rubber gasket 5 is folded outwards and one side thereof is fitted to the left side of the flange 2 16. Then, the right flange 15 and the flange 2 16 are fixed together by the cooperation between the fixing bolt 2 and the fixing nut 3, thereby achieving multiple seals in the connection between the valve body 1 and the connecting pipe 4, thereby improving the sealing performance between the two and preventing leakage.

[0032] Before installing the valve body 1 and the connecting pipe 4, first fold the rubber gasket 5 outward, and drive the multiple rubber cards 6 on its outside to be inserted into the inner wall of the card groove 14 one by one, so as to fix the position of the rubber gasket 5 and prevent it from resetting. Then the flange 2 16 and the right flange 1 15 can be fitted together and installed, and the rubber card ball 6 can be squeezed and pushed to deform, thereby increasing the sealing of the connection between the valve body 1 and the connecting pipe 4. When disassembly is required, pull the rubber card ball 6 out of the card groove 14, so that the rubber gasket 5 is reset and covered on the outside of the sealing ring 8, thereby preventing the sealing ring 8 from being damaged, which would lead to a decrease in sealing performance, thereby improving the overall use effect of the valve body 1.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ball valve with a multiple sealing structure, comprising a valve body (1), a connecting pipe (4), a first flange (15) and a second flange (16), characterized in that: The outer ring of the flange (15) is plugged with a plurality of fixing bolts (2), and the right part of the fixing bolts (2) is threadedly connected with a fixing nut (3). A rubber convex ring (7) is installed on the right side of the valve body (1), and an auxiliary groove (13) is provided on the outer side of the rubber convex ring (7). A sealing ring (8) is installed on the inner wall of the auxiliary groove (13). A plug-in groove (11) is provided at the left end of the connecting pipe (4), and a fitting groove (9) is provided on the outer side of the plug-in groove (11).

2. A ball valve with a multiple sealing structure according to claim 1, characterized in that: A plug-in portion (12) is installed on the right side of the rubber convex ring (7), a rubber pad (5) is installed on the right end of the valve body (1), and a positioning groove (10) is opened on the right side of the plug-in groove (11).

3. The ball valve with multiple sealing structures according to claim 2, characterized in that: The plug-in portion (12) is plugged into the inner wall of the positioning groove (10), the rubber pad (5) is in a folded state, and the rubber pad (5) is fitted with the second flange (16).

4. The ball valve with multiple sealing structures according to claim 2, characterized in that: A plurality of rubber clamping balls (6) are installed on the outer ring side of the rubber pad (5), and a plurality of clamping grooves (14) are opened at the right end of the valve body (1).

5. The ball valve with multiple sealing structures according to claim 4, characterized in that: The rubber clamping balls (6) are inserted into the inner wall of the clamping groove (14), and a plurality of rubber clamping balls (6) are distributed in an annular shape with the axis of the rubber convex ring (7) as the center.

6. The ball valve with multiple sealing structures according to claim 4, characterized in that: The right side of the rubber ball (6) is fitted with the left side of the second flange (16), and is squeezed and pushed by the second flange (16) to be in an extruded deformation state.

7. The ball valve with multiple sealing structures according to claim 1, characterized in that: The rubber convex ring (7) is inserted into the inner wall of the insertion groove (11), and the rubber convex ring (7) is in an extruded deformation state. The sealing ring (8) is clamped on the inner wall of the fitting groove (9). The flange plate 1 (15) and the flange plate 2 (16) on the right side are fitted together, and the left side of the fixing nut (3) is fitted together with the right side of the flange plate 2 (16).

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