Hard alloy sealing full-diameter ball valve

Abstract

The utility model discloses a hard alloy sealing full-diameter ball valve which comprises a valve body, a through channel is formed in the valve body, a first groove is formed in the bottom face in the channel, a mounting groove is formed in the top of the valve body, a pressing block is in threaded connection with the lower portion in the mounting groove, and a second groove opposite to the first groove is formed in the bottom face of the pressing block. A ball is movably arranged in the first groove and the second groove, a through hole communicated with the channel is formed in the middle of the ball, an alloy sealing ring is arranged on the upper portion of the pressing block and connected to the valve body through a screw, a valve deck is further arranged on the upper portion of the pressing block, the alloy sealing ring is located on the periphery of the lower portion of the valve deck, and the valve deck is connected to the valve body through a bolt. The lower end of the valve rod is in spline connection with the top face of the ball body, and the upper end of the valve rod is connected with a handle. The alloy sealing ring is adopted in the valve body, the strength of the sealing ring structure is improved, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, specifically a hard alloy sealed full-bore ball valve. Background Technology

[0002] A ball valve is a valve in which the ball is driven by the valve stem and rotates around the valve's axis. It can also be used for fluid regulation and control. Hard-seal V-type ball valves, in particular, have a strong shearing force between the V-shaped ball core and the metal seat with hard alloy overlay, making them especially suitable for media containing fibers or small solid particles. Ball valves are classified according to their actuation method: pneumatic ball valves, electric ball valves, and manual ball valves.

[0003] However, current ball valves have the following problems: the sealing rings inside the valve body are all made of rubber, which are prone to wear after long-term use, and frequent opening and closing operations may cause wear on the surface of the ball, making it difficult to replace damaged parts. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a hard alloy sealed full-bore ball valve to solve the problems mentioned in the background section.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A hard alloy sealed full-bore ball valve includes a valve body with a through channel inside. The bottom surface of the channel has a first groove, and the top of the valve body has a mounting groove. A pressure block is threadedly connected to the lower part of the mounting groove. The bottom surface of the pressure block has a second groove opposite to the first groove. A ball is movably disposed in the first and second grooves. The middle part of the ball has a through hole communicating with the channel. An alloy sealing ring is provided on the upper part of the pressure block and is connected to the valve body by screws. A valve cover is also provided on the upper part of the pressure block. The alloy sealing ring is located on the lower periphery of the valve cover. The valve cover is connected to the valve body by bolts. A valve stem is rotatably connected to the valve cover. The lower end of the valve stem is splinedly connected to the top surface of the ball, and the upper end of the valve stem is connected to a handle.

[0007] Preferably, the valve body has flanges at both ends.

[0008] The above technical solution allows for the connection of pipelines to both ends of the ball valve by setting flanges.

[0009] Preferably, the alloy sealing ring includes an alloy ring and a first sealing ring connected to the upper and lower edges of the inner ring of the alloy ring. The alloy ring has a plurality of first screw holes between the two first sealing rings, and the lower part of the mounting groove has a second screw hole that matches the first screw holes.

[0010] In the above technical solution, when installing the alloy sealing ring, the alloy ring is fixed in the installation groove by screws. The two layers of first sealing rings on the inner wall of the alloy ring can play a double sealing role to prevent the medium in the valve body from leaking. Moreover, the alloy ring is connected to the valve body by screws, which also improves the stability and firmness of the alloy ring and can stably restrict the pressure block in the valve body.

[0011] Preferably, the outer walls of the upper and lower ends of the sphere are provided with sealing gaskets.

[0012] The above technical solution improves the sealing performance of the sphere's edge by setting sealing gaskets at the upper and lower ends of the sphere.

[0013] Preferably, the outer wall of the pressure block is provided with a second sealing ring.

[0014] The above technical solution uses the second sealing ring to provide the first sealing effect, preventing the medium from flowing out between the pressure block and the valve body.

[0015] Preferably, the top surface of the valve cover is provided with a groove, and a washer, a rubber ring and a clamping nut are arranged in the groove from bottom to top. The clamping nut is threaded into the groove, and the valve stem is rotatably disposed in the washer, the rubber ring and the clamping nut.

[0016] In the above technical solution, the tightening nut presses the rubber ring and washer tightly into the groove. The rubber ring has elasticity, i.e., restoring force. When the valve stem is rotated, the restoring force of the rubber ring can squeeze the valve stem, making the rotation of the valve stem have resistance. When the valve stem is rotated to the desired position, the resistance of the rubber ring can also prevent the valve stem from rebounding.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The valve body uses an alloy sealing ring, which improves the strength of the sealing ring structure and extends its service life. Moreover, when a component inside the valve body is damaged, the valve cover, alloy sealing ring, and pressure block can be removed in sequence to replace the damaged component, which facilitates maintenance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of an alloy sealing ring;

[0021] In the diagram: 1-valve body, 2-channel, 3-first groove, 4-mounting groove, 5-pressure block, 6-second groove, 7-ball, 8-alloy sealing ring, 801-alloy ring, 802-first sealing ring, 803-first screw hole, 9-valve cover, 10-valve stem, 11-handle, 12-flange, 13-sealing gasket, 14-second sealing ring, 15-groove, 16-washer, 17-rubber ring, 18-compression nut. Detailed Implementation

[0022] 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.

[0023] Example 1

[0024] Please see Figures 1-2 A hard alloy sealed full-bore ball valve includes a valve body 1 with a through channel 2 inside. Flanges 12 are located at both ends of the valve body 1, connecting it to a pipeline. The channel 2 is used for media flow. A first groove 3 is located on the bottom surface of the channel 2, and a mounting groove 4 is located on the top of the valve body 1. A pressure block 5 is threadedly connected to the lower part of the mounting groove 4. A second groove 6, opposite to the first groove, is located on the bottom surface of the pressure block 5. A ball 7 is movably disposed within the first groove 3 and the second groove 6. Sealing gaskets 13 are provided on the outer walls of the upper and lower ends of the ball 7. The ball 7... The sealing gaskets 13 at both ends contact the first groove 3 and the second groove 4 respectively, increasing the sealing performance of the ball 7. The middle part of the ball 7 is provided with a through hole communicating with the channel 2. The upper part of the pressure block 5 is provided with an alloy sealing ring 8, which is connected to the valve body 1 by screws. The upper part of the pressure block 5 is also provided with a valve cover 9. The alloy sealing ring 8 is located on the lower periphery of the valve cover 9. The valve cover 9 is connected to the valve body 1 by bolts. A valve stem 10 is rotatably connected to the valve cover 9. The lower end of the valve stem 10 is connected to the spline on the top surface of the ball 7, and the upper end of the valve stem 10 is connected to a handle 11.

[0025] The outer wall of the pressure block 5 is provided with a second sealing ring 14. The second sealing ring 14 serves as the first sealing element to prevent the medium from flowing out between the pressure block 5 and the valve body 1.

[0026] The alloy sealing ring 8 includes an alloy ring 801 and first sealing rings 802 connected to the upper and lower edges of the inner ring of the alloy ring. Multiple first screw holes 803 are formed on the alloy ring 801 between the two first sealing rings. A second screw hole matching the first screw holes is provided in the lower part of the mounting groove 4. The alloy sealing ring is fixed in the mounting groove by screws. The two layers of first sealing rings on the inner wall of the alloy ring provide a double sealing effect and act as a second sealing layer to prevent leakage of the medium inside the valve body. Furthermore, the alloy ring is connected to the valve body by screws, which improves the stability and firmness of the alloy ring and stably confines the pressure block within the valve body.

[0027] The disassembly method in this embodiment is as follows: first remove the valve cover and separate the valve stem from the ball, then remove the alloy sealing ring, and then remove the pressure block, so that the ball can be removed from the valve body and the damaged parts can be replaced.

[0028] Example 2

[0029] Based on Embodiment 1, the top surface of the valve cover 9 is provided with a groove 15. A washer 16, a rubber ring 17 and a clamping nut 18 are arranged sequentially from bottom to top in the groove 15. The clamping nut 18 is threadedly connected in the groove 15, and the valve stem 10 is rotatably disposed in the washer 16, the rubber ring 17 and the clamping nut 18.

[0030] The tightening nut 18 presses the rubber ring 17 and the washer 16 tightly into the groove 15. The rubber ring 17 is elastic, i.e., has a restoring force. When the valve stem is rotated, the restoring force of the rubber ring 17 can squeeze the valve stem 10, making the rotation of the valve stem 10 have resistance. When the valve stem 10 is rotated to the desired position, the resistance of the rubber ring 17 can also prevent the valve stem from rebounding.

[0031] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A carbide-sealed full-bore ball valve, characterized in that: The valve includes a valve body (1), which has a through channel (2) inside. The bottom surface of the channel (2) has a first groove (3), and the top of the valve body (1) has a mounting groove (4). The lower part of the mounting groove (4) is threadedly connected to a pressure block (5). The bottom surface of the pressure block (5) has a second groove (6) opposite to the first groove. A ball (7) is movably disposed in the first groove (3) and the second groove (6). The middle part of the ball (7) has a through hole communicating with the channel (2). The upper part of the pressure block (5) is provided with an alloy sealing ring (8), which is connected to the valve body (1) by screws. The upper part of the pressure block (5) is also provided with a valve cover (9). The alloy sealing ring (8) is located on the outer periphery of the lower part of the valve cover (9). The valve cover (9) is connected to the valve body (1) by bolts. A valve stem (10) is rotatably connected to the valve cover (9). The lower end of the valve stem (10) is connected to the spline on the top surface of the ball (7). The upper end of the valve stem (10) is connected to a handle (11).

2. The carbide-sealed full-bore ball valve according to claim 1, characterized in that: The valve body (1) is provided with flanges (12) at both ends.

3. A carbide-sealed full-bore ball valve according to claim 2, characterized in that: The alloy sealing ring (8) includes an alloy ring (801) and a first sealing ring (802) connected to the upper and lower edges of the inner ring of the alloy ring. The alloy ring (801) has a plurality of first screw holes (803) between the two first sealing rings. The lower part of the mounting groove (4) is provided with a second screw hole that matches the first screw hole.

4. A carbide-sealed full-bore ball valve according to claim 3, characterized in that: The outer walls of the upper and lower ends of the sphere (7) are provided with sealing gaskets (13).

5. A carbide-sealed full-bore ball valve according to claim 4, characterized in that: The outer wall of the pressure block (5) is provided with a second sealing ring (14).

6. A hard alloy sealed full-bore ball valve according to any one of claims 1-5, characterized in that: The top surface of the valve cover (9) is provided with a groove (15). A washer (16), a rubber ring (17) and a clamping nut (18) are arranged in the groove (15) from bottom to top. The clamping nut (18) is threaded into the groove (15). The valve stem (10) is rotatably disposed in the washer (16), the rubber ring (17) and the clamping nut (18).

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