Rotor seat positioning and sealing structure of rotary cutting valve

Abstract

The utility model provides a rotary-cut valve rotor seat positioning and sealing structure, and belongs to the technical field of rotor seat positioning and sealing. Comprising a rotary-cut valve body; the sealing assembly is arranged on the inner side of the rotary-cut valve body, the sealing assembly comprises a positioning gasket fixed in the rotary-cut valve body, an outer sealing ring is arranged between the positioning gasket and the rotary-cut valve body, and the sides, close to each other, of the outer sealing ring and the positioning gasket are each of a wavy structure; the sealing assembly is arranged, the side, close to each other, of the outer sealing ring and the side, close to each other, of the positioning gasket are both in a wave-shaped design, the contact area between the outer sealing ring and the positioning gasket can be remarkably increased through the structure, therefore, a gap is more effectively filled, the sealing performance is greatly improved, errors generated by factors such as manufacturing precision and assembling errors are compensated, and the sealing performance is improved. Even if the components deform, good matching can still be achieved, the stability of the sealing structure can be improved, and the service life of the sealing structure can be prolonged.

Description

Technical Field

[0001] This utility model relates to the field of rotor seat positioning and sealing technology, and in particular to a rotor seat positioning and sealing structure for a rotary valve. Background Technology

[0002] The rotor seat positioning and sealing structure of the rotary valve is an important structure used in rotary valves to ensure accurate positioning of the rotor seat and achieve good sealing performance.

[0003] The existing rotary valve rotor seat plays a key role in valve operation, mainly responsible for driving the rotor to accurately switch the flow channel to meet the fluid transportation needs under different working conditions. When the rotor flow channel surface reaches the life limit due to long-term use, or when leakage occurs due to abnormal conditions such as foreign object impact or corrosion, a positioning gasket is often designed to ensure the continuous and stable operation of the valve.

[0004] However, in practical applications, existing gaskets are usually made of plastic, which makes them hard and lacks elastic deformation ability. This makes it easy for the inner or outer wall of the positioning gasket to be accidentally squeezed and deformed when installing the positioning gasket. This can cause the inner wall to fail to seal with the rotor seat or the outer wall to fail to seal with the valve body due to relative movement. This is not conducive to improving the stability and service life of the sealing structure.

[0005] Therefore, this application provides a rotary valve rotor seat positioning and sealing structure to meet the requirements. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a positioning and sealing structure for a rotary valve rotor seat.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a rotary valve rotor seat positioning and sealing structure, comprising:

[0008] Rotary valve body;

[0009] A sealing assembly is located inside the rotary valve body. The sealing assembly includes a positioning washer fixed inside the rotary valve body. An outer sealing ring is provided between the positioning washer and the rotary valve body. The outer sealing ring and the positioning washer both have a wavy structure on their adjacent sides.

[0010] Furthermore, a bottom positioning ring is provided inside the rotary valve body near the bottom of the outer sealing ring and the positioning washer.

[0011] The beneficial effects of adopting the above-mentioned further solutions are: to ensure more accurate positioning of the rotor seat, and to make the fit between the various components of the rotary valve tighter and more stable.

[0012] Furthermore, a snap-fit ​​block is fixedly connected to the bottom positioning ring on the side near the outer sealing ring and the positioning washer, and a snap-fit ​​groove is opened on the side of the outer sealing ring and the positioning washer near the snap-fit ​​block. The outer sealing ring and the positioning washer are snapped together with the bottom positioning ring through the snap-fit ​​block and the snap-fit ​​groove.

[0013] The beneficial effects of adopting the above-mentioned further solution are: to prevent the positioning gasket from being displaced relative to the inner wall of the valve body during use, to ensure that the positioning gasket is always in the correct working position, thereby maintaining good sealing and positioning effects.

[0014] Furthermore, both the outer sealing ring and the positioning washer are made of rubber.

[0015] The beneficial effects of adopting the above-mentioned further solutions are: to further enhance the sealing effect of the entire structure, effectively prevent media leakage, and provide elasticity for the outer sealing ring and positioning gasket during installation, preventing the outer sealing ring and positioning gasket from being damaged due to excessive deformation.

[0016] Furthermore, a top sealing ring is provided on the side of the outer sealing ring and the positioning washer away from the bottom positioning ring.

[0017] The beneficial effect of adopting the above-mentioned further solution is that the outer sealing ring, positioning washer, bottom positioning ring, and top sealing ring work together to form a multi-segment anti-slip structure, thereby improving the sealing performance of the sealing structure.

[0018] Furthermore, a groove is provided on the top sealing ring.

[0019] The beneficial effects of adopting the above-mentioned further solution are: the groove provides space for removing the workpiece, which facilitates the removal of the top sealing ring and reduces the damage to the top sealing ring during removal.

[0020] Furthermore, both the outer sealing ring and the bottom positioning ring are provided with an anti-slip coating on their outer sides.

[0021] The beneficial effects of adopting the above-mentioned further solution are: the anti-slip coating can increase the friction between the outer sealing ring, the bottom positioning ring and the inner wall of the valve body and reduce the gap between them, thereby improving the stability of the outer sealing ring and the bottom positioning ring installed inside the rotary valve body and improving the sealing effect.

[0022] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0023] By setting up a sealing component, a wave-shaped design is adopted on the side where the outer sealing ring and the positioning gasket are close to each other. This structure can significantly increase the contact area between the two, thereby filling the gap more effectively and greatly improving the sealing performance. In addition, the positioning gasket, with its own deformation capability, compensates for errors caused by factors such as manufacturing precision and assembly errors. Even if deformation occurs between the components, good fit can still be achieved, which plays a positive and important role in improving the stability of the sealing structure and extending its service life. Attached Figure Description

[0024] Figure 1 This is a front view of a rotary valve rotor seat positioning and sealing structure according to the present invention;

[0025] Figure 2 This is a side sectional view of the rotary valve body in the rotary valve rotor seat positioning and sealing structure of this utility model;

[0026] Figure 3 This is a side sectional view of the sealing component in the positioning and sealing structure of the rotor seat of a rotary valve according to this utility model;

[0027] Figure 4 This is an exploded view of the sealing component in the positioning and sealing structure of the rotor seat of the rotary valve according to this utility model.

[0028] Figure Labels

[0029] 1. Rotary valve body;

[0030] 2. Sealing components; 21. Outer sealing ring; 22. Positioning washer; 23. Bottom positioning ring; 24. Snap-fit ​​block; 25. Snap-fit ​​groove; 26. Top sealing ring; 27. Groove; 28. Anti-slip coating. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] like Figures 1-4 As shown, this utility model provides a technical solution: a rotary valve rotor seat positioning and sealing structure, comprising: a rotary valve body 1, which is composed of a rotor seat and a valve body;

[0033] like Figures 3-4As shown, the sealing assembly 2 is located inside the rotary valve body 1. The sealing assembly 2 includes a positioning washer 22 fixed inside the rotary valve body 1. An outer sealing ring 21 is provided between the positioning washer 22 and the rotary valve body 1. The sides of the outer sealing ring 21 and the positioning washer 22 that are close to each other are both wavy. By making the sides of the outer sealing ring 21 and the positioning washer 22 wavy, the contact area between the outer sealing ring 21 and the positioning washer 22 can be increased, the gap can be filled better, and the sealing performance can be improved. At the same time, the wavy positioning washer 22 can compensate for errors caused by manufacturing precision, assembly errors, etc. through its own deformation, ensuring that the components can fit well even if deformation occurs. This solves the problem that the inner wall or outer wall of the positioning washer 22 is accidentally squeezed and deformed, resulting in the inner wall not being able to seal with the rotor seat or the outer wall not being able to seal with the valve body due to relative movement. This is beneficial to improving the stability and service life of the sealing structure.

[0034] Furthermore, such as Figures 3-4 As shown, a bottom positioning ring 23 is provided inside the rotary valve body 1 near the bottom of the outer sealing ring 21 and the positioning washer 22. By first fitting the bottom positioning ring 23 onto the rotor seat and making it fit against the inner wall of the valve body, the height of the positioning washer 22 can be adjusted to better adapt to different installation requirements and compensate for dimensional errors caused by manufacturing, assembly and other reasons, ensuring more accurate positioning of the rotor seat and making the fit between the various components of the rotary valve tighter and more stable.

[0035] Furthermore, such as Figures 3-4 As shown, a snap-fit ​​block 24 is fixedly connected to the bottom positioning ring 23 near the outer sealing ring 21 and the positioning washer 22. A snap-fit ​​groove 25 is provided on the outer sealing ring 21 and the positioning washer 22 near the snap-fit ​​block 24. The outer sealing ring 21 and the positioning washer 22 are snapped into the bottom positioning ring 23 through the snap-fit ​​block 24 and the snap-fit ​​groove 25. By installing the outer sealing ring 21 and the positioning washer 22 inside the rotary valve body 1, the snap-fit ​​block 24 on the bottom positioning ring 23 is snapped into the snap-fit ​​groove 25 on the outer sealing ring 21 and the positioning washer 22, fixing the outer sealing ring 21 and the positioning washer 22 in the position of the rotary valve body 1. This prevents the positioning washer 22 from being displaced relative to the inner wall of the valve body during use, ensuring that the positioning washer 22 is always in the correct working position, thereby maintaining a good sealing and positioning effect.

[0036] Furthermore, such as Figures 3-4As shown, both the outer sealing ring 21 and the positioning washer 22 are made of rubber. By using rubber to make the outer sealing ring 21 and the positioning washer 22, the outer sealing ring 21 and the positioning washer 22 can fit tightly with the surrounding parts due to the good elasticity and flexibility of rubber, filling the tiny gaps, further enhancing the sealing effect of the entire structure, effectively preventing media leakage, and providing elasticity for the outer sealing ring 21 and the positioning washer 22 during installation, preventing the outer sealing ring 21 and the positioning washer 22 from being damaged due to excessive deformation.

[0037] Furthermore, such as Figures 3-4 As shown, a top sealing ring 26 is provided on the side of the outer sealing ring 21 and the positioning washer 22 away from the bottom positioning ring 23. By installing the top sealing ring 26 on the top of the outer sealing ring 21 and the positioning washer 22, the top of the outer sealing ring 21 and the positioning washer 22 are sealed, so that the outer sealing ring 21, the positioning washer 22, the bottom positioning ring 23 and the top sealing ring 26 cooperate to form a multi-segment anti-slip structure, thereby improving the sealing performance of the sealing structure.

[0038] Furthermore, such as Figures 3-4 As shown, a groove 27 is provided on the top sealing ring 26. By opening the groove 27 on the top of the top sealing ring 26, when the top sealing ring 26 needs to be removed, the groove 27 provides space for the removal of the workpiece, which facilitates the removal of the top sealing ring 26 and reduces the damage to the top sealing ring 26 during removal.

[0039] Furthermore, such as Figures 3-4 As shown, both the outer sealing ring 21 and the bottom positioning ring 23 are provided with an anti-slip coating 28. By spraying the anti-slip coating 28 onto the outer sealing ring 21 and the bottom positioning ring 23, the anti-slip coating 28 can increase the friction between the outer sealing ring 21, the bottom positioning ring 23 and the inner wall of the valve body and reduce the gap between them, thereby improving the stability of the outer sealing ring 21 and the bottom positioning ring 23 installed inside the rotary valve body 1 and improving the sealing effect.

[0040] like Figures 1-4As shown, the bottom positioning ring 23 is first fitted onto the rotor seat and installed inside the valve body. Then, the outer sealing ring 21 and the wavy inclined surface on the positioning washer 22 are spliced ​​together and installed inside the valve body. During the installation process, the outer sealing ring 21 and the positioning washer 22 compensate for manufacturing precision, assembly errors and other factors through their own shape and material, ensuring good fit between the components even if deformation occurs. This allows the anti-slip coating 28 on the bottom positioning ring 23 and the outer sealing ring 21 to contact the inner wall of the valve body, providing additional friction and sealing for the bottom positioning ring 23 and the outer sealing ring 21. Next, the outer sealing ring 21 and the positioning washer 22 are snapped onto the bottom positioning ring 23 by the snap-fit ​​block 24 and the snap-fit ​​groove 25 to prevent the positioning washer 22 from relative displacement with the inner wall of the valve body during use, ensuring that the positioning washer 22 is always in the correct working position, thereby maintaining good sealing and positioning effects. Finally, the top sealing ring 26 is installed on top of the outer sealing ring 21 and the positioning washer 22.

[0041] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A rotary cut valve rotor seat positioning seal structure, characterized by, Include: The rotary cutting valve body (1); The sealing assembly (2) is arranged on the inner side of the rotary cutting valve body (1), the sealing assembly (2) includes a positioning washer (22) fixed in the rotary cutting valve body (1), and an outer sealing ring (21) is arranged between the positioning washer (22) and the rotary cutting valve body (1), and the outer sealing ring (21) and the positioning washer (22) are both wave-shaped structures on the side close to each other.

2. A rotary cut valve rotor seat positioning seal structure as described in claim 1, wherein, The bottom of the rotary cutting valve body (1) close to the outer sealing ring (21) and the positioning washer (22) is provided with a bottom positioning ring (23).

3. A rotary cut valve rotor seat positioning seal structure as described in claim 2, wherein, The bottom positioning ring (23) is fixedly connected with a clamping block (24) on the side close to the outer sealing ring (21) and the positioning washer (22), the outer sealing ring (21) and the positioning washer (22) are provided with a clamping groove (25) on the side close to the clamping block (24), and the outer sealing ring (21), the positioning washer (22), the clamping block (24) and the clamping groove (25) are clamped with the bottom positioning ring (23).

4. A rotary cut valve rotor seat positioning seal structure as described in claim 1, wherein, The outer sealing ring (21) and the positioning washer (22) are both made of rubber.

5. A rotary cut valve rotor seat positioning seal structure as described in claim 2 wherein, The outer sealing ring (21) and the positioning washer (22) are provided with a top sealing ring (26) on the side away from the bottom positioning ring (23).

6. A rotary cut valve rotor seat positioning seal structure as described in claim 5, wherein, The top sealing ring (26) is provided with a notch (27).

7. A rotary cut valve rotor seat positioning seal structure as described in claim 2 wherein, The outer side of the outer sealing ring (21) and the bottom positioning ring (23) is provided with an antiskid coating (28).

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