CN219317746U - Mechanical seal structure of a flanged ball valve - Google Patents

Abstract

The utility model relates to the technical field of flange ball valve sealing, and particularly discloses a flange ball valve mechanical sealing structure, which comprises the following components: the device comprises a right valve body, a left valve body and a right valve body, wherein one end of the right valve body is provided with a groove and a second groove, the outer side surface of the left valve body is provided with a fixed plate, and the end surface of the left valve body is provided with a pressing plate and a second pressing plate; the beneficial effects are as follows: when the flange ball valve mechanical seal structure is used, the left valve body is clamped in the right valve body, the sealing gasket in the right valve body is extruded and sealed by the pressing plate of the left valve body, then the left valve body and the right valve body are fixed by the rotating bolts, and after the fixing is finished, the sealing plate is clamped in the sealing groove for secondary sealing, so that the integral sealing performance is improved, the condition that the sealing gasket is only singly used for sealing when the common flange ball valve is sealed is avoided, and when the service time of the flange ball valve is longer, the sealing gasket is singly aged, and the leakage problem of the flange ball valve possibly occurs.

Description

Mechanical seal structure of a flanged ball valve

technical field

The utility model relates to the technical field of flange ball valve sealing, in particular to a flange ball valve mechanical seal structure.

Background technique

Flanged ball valve and gate valve belong to the same type of valve, the difference is that its closing part is a sphere, and the sphere rotates around the center line of the valve body to achieve opening and closing. Cut off, distribute and change the flow direction of the medium, and the two ends of the flanged ball valve are fixedly installed with flanges, which is convenient for the fixed installation of the flanged ball valve.

In the prior art, in order to seal between the flanged ball valves and prevent the flanged ball valves from leaking during use, a gasket is provided to seal them.

However, the general flanged ball valve is only sealed with a single gasket. When the flanged ball valve is used for a long time, the single gasket seal will age, which may cause the flanged ball valve to leak.

Utility model content

The purpose of this utility model is to provide a mechanical sealing structure of a flanged ball valve to solve the problems raised in the above-mentioned background technology.

In order to achieve the above purpose, the utility model provides the following technical solutions: a flanged ball valve mechanical seal structure, the flanged ball valve mechanical seal structure includes: a right valve body, one end of the right valve body is provided with a groove and a second groove, A positioning plate is arranged on the side of the right valve body, a sealing groove is arranged on the side of the right valve body, and a sealing plate is arranged in the sealing groove;

The left valve body is provided with a fixing plate on the side of the left valve body, a second bolt is arranged inside the fixing plate, a spring is sleeved on the surface of the second bolt, and a pressing plate and a second pressing plate are arranged on the end surface of the left valve body.

Preferably, a gasket is provided in both the groove and the second groove, the gasket is in the shape of an annular plate, and the gasket is fixedly connected inside the groove and the second groove.

Preferably, the sealing plate is made of elastic material, and the sealing plate is sealed and fastened by bolts.

Preferably, the fixing plate is in the shape of a square plate, and there are two sets of fixing plates, and the two sets of fixing plates are symmetrically distributed with respect to the left valve body.

Preferably, one end of the spring is fixedly connected to the side of the fixing plate, and there are two groups of springs, and the two groups of springs are symmetrically distributed with respect to the left valve body.

Preferably, the pressure plate and the second pressure plate are annular plate-shaped structures, and the pressure plate and the second pressure plate are just engaged in the groove and the second groove.

Preferably, the positioning plate is in the shape of a square plate, and there are two sets of positioning plates, and the two sets of positioning plates are symmetrically distributed with respect to the right valve body.

Compared with the prior art, the beneficial effects of the utility model are:

The utility model proposes a flanged ball valve mechanical seal structure. When in use, the left valve body is first inserted into the right valve body, and the pressure plate of the left valve body is used to squeeze and seal the sealing gasket in the right valve body, and then the bolt is turned Fix the left valve body and the right valve body, and then use the sealing plate to snap into the sealing groove for secondary sealing to improve the overall sealing performance, thus avoiding the general sealing of flanged ball valves with only a single gasket for sealing , when the flanged ball valve is used for a long time, the single gasket seal will age, which may cause the flanged ball valve to leak.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a schematic diagram of the structure of the right valve body of the utility model;

Fig. 3 is the enlarged view of the structure of A region in Fig. 2 of the utility model;

Fig. 4 is a schematic diagram of the structure of the left valve body of the utility model.

In the figure: 1, right valve body; 2, groove; 3, second groove; 4, positioning plate; 5, sealing groove; 6, sealing plate; 7, left valve body; 8, fixed plate; 9, the first Two bolts; 10, spring; 11, pressing plate; 12, second pressing plate; 13, gasket; 14, bolt.

Detailed ways

In order to clearly and completely describe the purpose, technical solution, and advantages of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are some, not all, embodiments of the present invention, 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 under the premise of creative labor belong to the protection scope of the present invention.

Embodiment one:

Please refer to Figure 1-Figure 4, the utility model provides a technical solution: a flange ball valve mechanical seal structure, the flange ball valve mechanical seal structure includes: a right valve body 1, a groove is opened at one end of the right valve body 1 2 and the second groove 3, the outer side of the right valve body 1 is provided with a positioning plate 4, the side of the right valve body 1 is provided with a sealing groove 5, and a sealing plate 6 is arranged in the sealing groove 5; the left valve body 7, the left valve body 7 The outer surface is provided with a fixed plate 8, the second bolt 9 is arranged inside the fixed plate 8, the surface of the second bolt 9 is covered with a spring 10, and the end surface of the left valve body 7 is provided with a pressure plate 11 and a second pressure plate 12;

When in use, first snap the left valve body 7 into the right valve body 1, use the pressure plate 11 of the left valve body 7 to squeeze and seal the gasket 13 in the right valve body 1, and then turn the bolt 14 to lock the left valve body 7 It is fixed with the right valve body 1, and after being fixed, the sealing plate 6 is used to snap into the sealing groove 5 for secondary sealing to improve the overall sealing performance.

Embodiment two

On the basis of Embodiment 1, a fixed plate 8 is provided. The fixed plate 8 has a square plate structure. The fixed plate 8 is provided with two groups. The two groups of fixed plates 8 are symmetrically distributed with respect to the left valve body 7. One end of the spring 10 is fixedly connected to the On the side of the fixed plate 8, two groups of springs 10 are arranged, and the two groups of springs 10 are symmetrically distributed about the left valve body 7. The body 1 is symmetrically distributed, the sealing plate 6 is made of elastic material, and the sealing plate 6 is sealed and fastened by bolts 14;

During use, utilize the second bolt 9 to fix the left valve body 7 and the right valve body 1, the spring 10 provided on the surface of the second bolt 9 can improve the tightness and stability of the connection of the second bolt 9, and then the sealing plate 6 is sleeved on the In the sealing groove 5 opened on the surface of the left valve body 7 and the right valve body 1, the gap between the left valve body 7 and the right valve body 1 can be sealed to a certain extent, and the sealing effect between the left valve body 7 and the right valve body can be improved. 1 overall tightness.

Embodiment Three

On the basis of the second embodiment, a groove 2 is provided, and a gasket 13 is arranged in both the groove 2 and the second groove 3. The gasket 13 has an annular plate structure, and the gasket 13 is fixedly connected between the groove 2 and the second groove 3. Inside the second groove 3, the pressure plate 11 and the second pressure plate 12 have an annular plate structure, and the pressure plate 11 and the second pressure plate 12 are just engaged in the groove 2 and the second groove 3;

During use, utilize pressing plate 11 and the second pressing plate 12 to squeeze the gasket 13 in the groove 2 and the second groove 3, can improve the tightness that the left valve body 7 is connected with the right valve body 1 like this, through two The setting of the group sealing gasket 13 can greatly improve the sealing effect and improve the service life.

In actual use, first snap the left valve body 7 into the right valve body 1, use the pressure plate 11 of the left valve body 7 to squeeze and seal the gasket 13 in the right valve body 1, and then turn the bolt 14 to lock the left valve body 7 is fixed with the right valve body 1. After fixing, use the sealing plate 6 to snap into the sealing groove 5 for secondary sealing to improve the overall sealing performance, and use the second bolt 9 to fix the left valve body 7 and the right valve body 1. The spring 10 provided on the surface of the second bolt 9 can improve the tightness and stability of the connection of the second bolt 9, and then the sealing plate 6 is sleeved in the sealing groove 5 provided on the surface of the left valve body 7 and the right valve body 1, so that the left The gap between the valve body 7 and the right valve body 1 has a certain degree of sealing effect, which improves the overall sealing performance of the left valve body 7 and the right valve body 1, and the overall design avoids the single use of general flange ball valve sealing The gasket 13 is used for sealing. When the flanged ball valve is used for a long time, the sealing of the single gasket 13 will age, which may cause leakage of the flanged ball valve.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (7)

1. A flange ball valve mechanical seal structure which characterized in that: the flange ball valve mechanical seal structure includes: the device comprises a right valve body (1), wherein a groove (2) and a second groove (3) are formed in one end of the right valve body (1), a positioning plate (4) is arranged on the outer side surface of the right valve body (1), a sealing groove (5) is formed in the side surface of the right valve body (1), and a sealing plate (6) is arranged in the sealing groove (5);

the valve comprises a left valve body (7), wherein a fixing plate (8) is arranged on the outer side face of the left valve body (7), a second bolt (9) is arranged in the fixing plate (8), a spring (10) is sleeved on the surface of the second bolt (9), and a pressing plate (11) and a second pressing plate (12) are arranged on the end face of the left valve body (7).

2. The flange ball valve mechanical seal structure according to claim 1, wherein: sealing gaskets (13) are arranged in the grooves (2) and the second grooves (3), the sealing gaskets (13) are of annular plate-shaped structures, and the sealing gaskets (13) are fixedly connected inside the grooves (2) and the second grooves (3).

3. The flange ball valve mechanical seal structure according to claim 2, wherein: the sealing plate (6) is made of elastic materials, and the sealing plate (6) is tightly fastened by bolts (14).

4. A flange ball valve mechanical seal structure according to claim 3, wherein: the fixed plates (8) are of square plate-shaped structures, two groups of fixed plates (8) are arranged, and the two groups of fixed plates (8) are symmetrically distributed relative to the left valve body (7).

5. The flange ball valve mechanical seal structure according to claim 4, wherein: one end of the spring (10) is fixedly connected to the side face of the fixed plate (8), two groups of springs (10) are arranged, and the two groups of springs (10) are symmetrically distributed relative to the left valve body (7).

6. The flange ball valve mechanical seal structure according to claim 5, wherein: the pressing plate (11) and the second pressing plate (12) are of annular plate-shaped structures, and the pressing plate (11) and the second pressing plate (12) are just clamped in the groove (2) and the second groove (3).

7. The flange ball valve mechanical seal structure according to claim 6, wherein: the positioning plates (4) are of square plate-shaped structures, two groups of positioning plates (4) are arranged, and the two groups of positioning plates (4) are symmetrically distributed relative to the right valve body (1).

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