Anti-scouring and anti-crystallization ball valve

Abstract

The utility model belongs to the technical field of ball valve equipment, and particularly relates to an anti-scouring and anti-crystallization ball valve which comprises a valve body, a valve cover is arranged on one side of the valve body, a movable handle is arranged at the top end of the valve body, a connecting flange is arranged on one side of the valve body, a fastener is arranged on the inner side of the connecting flange, and a valve rod is arranged at the bottom end of the movable handle. A valve ball is arranged at the bottom end of the valve rod, a lower connecting shaft is arranged at the bottom of the valve ball, and an anti-scouring assembly is arranged on the inner side of the fastening piece. One side of the scraper lining and one side of the sealing ring are attached to the outer surface of the valve ball, when the valve ball rotates, the scraper lining scrapes the surface of the valve ball through the scraper lining attached to the outer surface of the valve ball, so that media deposited and attached to the surface are effectively removed, the surface of the valve ball is prevented from being crystallized, and the sealing ring is attached to the outer surface of the valve ball, so that the sealing effect is good. The sealing performance of the valve ball is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valve equipment, in particular to an erosion-proof and crystallization-proof ball valve. Background Technique

[0002] The sphere and the valve seat are the most important sealing components in the valve, and the sealing cooperation between the two affects the sealing performance of the entire valve. A ball valve is a valve in which the opening and closing member is driven by a valve stem and rotates around the axis of the ball valve. Ball valves are divided into soft-sealing ball valves and hard-sealing ball valves.

[0003] The prior art has the following deficiencies: In the prior art, the publication (announcement) number: CN219082308U "an anti-crystallization ball valve" "includes a sphere, an upper valve stem, a lower valve stem and a valve seat assembled in the valve body. A scraping knife that fits with the sealing surface of the sphere is provided on the valve seat. A spring seat is provided at one end of the valve seat away from the sphere. A compression spring is press-fitted between the spring seat and the valve seat. A baffle is provided at one end of the spring seat away from the valve seat. A corrugated pipe is welded between the baffle and the valve seat. The spring seat and the compression spring are located in the cavity surrounded by the valve seat, the corrugated pipe, the baffle and the valve body. A step surface for abutting against the baffle is provided on the inner wall of the valve body. An end cover for pressing the baffle against the step surface is connected to the valve body";

[0004] When the above equipment is in use, since the liquid contains impurities, it will cause the surface of the ball valve to be prone to crystallization or deposition of attached media. The presence of these crystals or media easily affects the tightness of the contact between the sphere and the valve seat, which will seriously affect the sealing performance of the ball valve. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides an erosion-proof and crystallization-proof ball valve, which solves the existing problems.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] An erosion-proof and crystallization-proof ball valve, including a valve body, a valve cover is provided on one side of the valve body, a movable handle is provided at the top of the valve body, a connecting flange is provided on one side of the valve body, a fastening member is provided inside the connecting flange, a valve stem is provided at the bottom of the movable handle, a valve ball is provided at the bottom of the valve stem, a lower connecting shaft is provided at the bottom of the valve ball, and an erosion-proof component is provided inside the fastening member;

[0008] The erosion-proof component includes a protective bushing provided on the inner wall of the fastening member, a sealing bushing is provided inside the protective bushing, and the fastening member is fixedly connected to the connecting flange through a fixing bolt.

[0009] As a preferred technical solution of the utility model, sealing washers are provided on the outer sides of the joints between the lower connecting shaft and the valve stem and the valve ball.

[0010] As a preferred technical solution of the present utility model, positioning blocks are provided on the outer surfaces of the protective bushing and the sealing bushing, corresponding positioning grooves are provided inside the valve body, the sizes of the positioning blocks and the positioning grooves are adapted to each other, a plurality of positioning blocks and positioning grooves are provided, and they are distributed in an annular array. The protective bushing is connected to the inner wall of the valve body through the positioning blocks.

[0011] As a preferred technical solution of the present utility model, a convex block is provided on one side of the protective bushing, and a corresponding groove is provided on one side of the sealing bushing. The protective bushing is clamped to the sealing bushing through the convex block and the groove.

[0012] As a preferred technical solution of the present utility model, a scraping lining is provided inside the sealing bushing, a sealing ring is provided on one side of the sealing bushing, and one side of the scraping lining and the sealing ring is attached to the outer surface of the valve ball.

[0013] As a preferred technical solution of the present utility model, a wear-resistant layer is provided on the outer surface of the valve ball.

[0014] Compared with the prior art, the present utility model provides an anti-scouring and anti-crystallization ball valve, which has the following beneficial effects:

[0015] 1. For this anti-scouring and anti-crystallization ball valve, sealing washers are provided on the outer sides of the connections between the lower connecting shaft and the valve rod and the valve ball. The sealing washers on the outer sides of the connections between the lower connecting shaft and the valve rod and the valve ball can effectively improve the sealing performance of the ball valve; the anti-scouring component includes a protective bushing provided on the inner wall of the fastening member, a sealing bushing is provided inside the protective bushing, the fastening member is fixedly connected to the connecting flange through fixing bolts, the fastening member fixed by bolts fixes the internal sealing bushing and the protective bushing, and the internal part of the valve body is protected through the sealing bushing and the protective bushing, effectively improving the anti-scouring performance of the valve body;

[0016] 2. For this anti-scouring and anti-crystallization ball valve, the protective bushing is clamped to the sealing bushing through the convex block and the groove, and such a setting improves the connection stability through the convex block and the groove; a scraping lining is provided inside the sealing bushing, a sealing ring is provided on one side of the sealing bushing, and one side of the scraping lining and the sealing ring is attached to the outer surface of the valve ball. When the valve ball rotates, the scraping lining scrapes the surface of the valve ball, thereby effectively removing the medium deposited and attached on the surface, thereby preventing crystallization on the surface of the valve ball, and the sealing ring is attached to the outer surface of the valve ball to improve the sealing performance of the valve ball; a wear-resistant layer is provided on the outer surface of the valve ball to improve the anti-scouring performance of the valve ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0018] Figure 2 Schematic diagram of the internal structure of the main view of the present utility model;

[0019] Figure 3 Schematic diagram of the three-dimensional cross-sectional structure of the anti-erosion component of the present utility model;

[0020] Figure 4 Schematic diagram of the three-dimensional structure of the valve ball of the present utility model.

[0021] In the figure: 1, valve body; 2, valve cover; 3, movable handle; 4, connecting flange; 5, fastening member; 6, valve stem; 7, lower connecting shaft; 8, sealing gasket; 9, anti-erosion component; 901, protective bushing; 902, sealing bushing; 903, positioning block; 904, scraping inner lining; 905, sealing ring; 10, valve ball; 1001, wear-resistant layer. Specific implementation manner

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-4 , an anti-erosion and anti-crystallization ball valve, comprising a valve body 1, a valve cover 2 is arranged on one side of the valve body 1, a movable handle 3 is arranged at the top of the valve body 1, a connecting flange 4 is arranged on one side of the valve body 1, a fastening member 5 is arranged inside the connecting flange 4, a valve stem 6 is arranged at the bottom of the movable handle 3, a valve ball 10 is arranged at the bottom of the valve stem 6, a lower connecting shaft 7 is arranged at the bottom of the valve ball 10, and an anti-erosion component 9 is arranged inside the fastening member 5.

[0024] In this embodiment, sealing washers 8 are provided on the outer sides of the joints between the lower connecting shaft 7 and the valve stem 6 and the valve ball 10. The sealing performance of the ball valve can be effectively improved through the sealing washers 8 on the outer sides of the joints between the lower connecting shaft 7 and the valve stem 6 and the valve ball 10. The anti-scouring assembly 9 includes a protective bushing 901 provided on the inner wall of the fastening member 5. A sealing bushing 902 is provided inside the protective bushing 901. The fastening member 5 is fixedly connected to the connecting flange 4 through fixing bolts. The internal sealing bushing 902 and the protective bushing 901 are fastened by the bolt-fixed fastening member 5. The inside of the valve body 1 is protected through the sealing bushing 902 and the protective bushing 901, effectively improving the anti-scouring performance of the valve body 1. Positioning blocks 903 are provided on the outer surfaces of the protective bushing 901 and the sealing bushing 902. Corresponding positioning grooves are provided inside the valve body 1. The sizes of the positioning blocks 903 and the positioning grooves are adapted to each other. A plurality of positioning blocks 903 and positioning grooves are provided and are distributed in an annular array. The protective bushing 901 is installed on the inner wall of the valve body 1 through the positioning blocks 903. The sealing bushing 902 and the protective bushing 901 are quickly positioned and installed inside the valve body 1 through the positioning blocks 903 and the positioning grooves. A convex block is provided on one side of the protective bushing 901 and a corresponding groove is provided on one side of the sealing bushing 902. The protective bushing 901 is clamped to the sealing bushing 902 through the convex block and the groove, and the connection stability is achieved through the convex block and the groove. A scraping lining 904 is provided inside the sealing bushing 902. A sealing ring 905 is provided on one side of the sealing bushing 902. The scraping lining 904 and the sealing ring 905 are attached to the outer surface of the valve ball 10. When the valve ball 10 rotates, the scraping lining 904 scrapes the surface of the valve ball 10, effectively removing the medium deposited and attached on the surface, thereby preventing crystallization on the surface of the valve ball 10. The sealing ring 905 is attached to the outer surface of the valve ball 10, improving the sealing performance of the valve ball 10. A wear-resistant layer 1001 is provided on the outer surface of the valve ball 10, improving the anti-scouring performance of the valve ball 10.

[0025] The working principle and usage process of the present utility model: During installation, the protective bushing 901 is clamped to the sealing bushing 902 through the convex block and the groove. The sealing bushing 902 and the protective bushing 901 are quickly positioned and installed inside the valve body 1 through the positioning blocks 903 and the positioning grooves. The internal sealing bushing 902 and the protective bushing 901 are fastened by the bolt-fixed fastening member 5. Finally, the valve body 1 is installed at the required position through the connecting flange 4. During use, the movable handle 3 drives the valve ball 10 to rotate through the valve stem 6. When the valve ball 10 rotates, the scraping lining 904 scrapes the surface of the valve ball 10, effectively removing the medium deposited and attached on the surface, thereby preventing crystallization on the surface of the valve ball 10. The sealing ring 905 is attached to the outer surface of the valve ball 10, improving the sealing performance of the ball valve.

[0026] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An anti-scouring and anti-crystallization ball valve, comprising a valve body (1), a valve cover (2) is arranged on one side of the valve body (1), a movable handle (3) is arranged on the top of the valve body (1), a connecting flange (4) is arranged on one side of the valve body (1), a fastener (5) is arranged on the inner side of the connecting flange (4), and a valve stem (6) is arranged at the bottom end of the movable handle (3), characterized in that: A valve ball (10) is arranged at the bottom end of the valve stem (6), a lower connecting shaft (7) is arranged at the bottom of the valve ball (10), and an anti-scouring component (9) is arranged inside the fastening member (5); The anti-scour component (9) comprises a protective bushing (901) arranged on the inner wall of the fastener (5), a sealing bushing (902) being arranged inside the protective bushing (901), and the fastener (5) is fixedly connected to the connecting flange (4) by fixing bolts.

2. The anti-scouring and anti-crystallization ball valve according to claim 1, characterized in that: Sealing gaskets (8) are provided on the outer sides of the connection points between the lower connecting shaft (7) and the valve stem (6) and the valve ball (10).

3. The anti-scouring and anti-crystallization ball valve according to claim 1, characterized in that: The outer surfaces of the protective bushing (901) and the sealing bushing (902) are provided with positioning blocks (903), and the interior of the valve body (1) is provided with corresponding positioning grooves. The positioning blocks (903) are adapted to the sizes of the positioning grooves. The positioning blocks (903) and the positioning grooves are provided in a plurality and distributed in a ring array. The protective bushing (901) is clamped with the inner wall of the valve body (1) via the positioning blocks (903).

4. The anti-scouring and anti-crystallization ball valve according to claim 1, characterized in that: A protrusion is provided on one side of the protective bushing (901) and a groove is correspondingly provided on one side of the sealing bushing (902), and the protective bushing (901) is clamped with the sealing bushing (902) via the protrusion and the groove.

5. The anti-scouring and anti-crystallization ball valve according to claim 1, characterized in that: A scraper lining (904) is provided on the inner side of the sealing bushing (902), a sealing ring (905) is provided on one side of the sealing bushing (902), and the scraper lining (904) and one side of the sealing ring (905) are attached to the outer surface of the valve ball (10).

6. The anti-scouring and anti-crystallization ball valve according to claim 1, characterized in that: The outer surface of the valve ball (10) is provided with a wear-resistant layer (1001).

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