Multi-position adjustable V-type ball valve

Abstract

The application discloses a multi-grade adjustable V-shaped ball valve, which comprises a valve body, a ball core rotatably connected in the inner cavity of the valve body, a valve rod and a locking mechanism, the inner cavity of the valve body is provided with a plurality of medium flow channels, the ball core is a hollow ball, a plurality of V-shaped channels with different areas and corresponding to the medium flow channels are formed in the spherical surface of the ball core, the valve rod is perpendicularly and rotatably connected to the outer wall of the valve body and fixed with the ball core, the locking mechanism is sleeved on one end of the valve rod and comprises a guide sleeve and a locking sleeve, the guide sleeve is sleeved on the outer periphery of the valve rod, one end of the guide sleeve is fixed to the outer wall of the valve body, the locking sleeve is fixedly sleeved on the valve rod, the outer wall of the locking sleeve is rotatably abutted against the inner wall of the guide sleeve, and the locking member is arranged between the outer wall of the locking sleeve and the inner wall of the guide sleeve to limit the rotation of the locking sleeve. The valve rod drives the ball core to rotate, the V-shaped channels on the ball core can cut the medium in the medium flow channels horizontally with the rotation of the ball core, the flow areas of the V-shaped channels are different, and the medium flow can be graded and adjusted with the rotation of the ball core.

Description

Technical Field

[0001] The present invention relates to the field of valve technology, and more particularly to a multi-position adjustable V-shaped ball valve. Background Art

[0002] The V-type ball valve is a fixed-position ball valve with a single-seat seal. It offers the best regulating performance among ball valves, an equal percentage flow characteristic, and an adjustable ratio of up to 100:1. Its V-shaped cutout creates a shearing effect on the metal seat, making it particularly suitable for media containing fibers, fine solid particles, slurries, and other materials. The V-type ball valve's closing element is a hemispherical V-shaped opening with a sharp edge. During the ball's rotation, the V-shaped opening wipes the closing elements, providing a strong shearing force on the media. The V-shaped opening forms a sector with the valve seat flow channel, changing the flow channel's cross-sectional area during rotation, allowing for precise regulation of the media. It is an angular-rotating regulating valve with the same sealing performance as a conventional ball valve, enabling it to perform both regulating and switching functions. It is widely used in industrial process automation systems when paired with pneumatic or electric actuators.

[0003] The existing V-shaped ball valve mainly includes a valve body, a valve seat, a V-shaped ball and a valve stem. The V-shaped ball is placed in the inner cavity of the valve body. The outer surface of the V-shaped ball is provided with a spherical valve disc sealing surface. The valve seat is arranged in the inner cavity of the valve body. The valve seat is provided with a valve seat sealing surface that can form a seal with the valve disc sealing surface. The V-shaped ball is driven by the valve stem and rotates around the axis of the ball valve. The V-shaped ball and the valve seat cooperate to open and close the fluid.

[0004] Currently, conventional V-shaped regulating ball valves regulate media flow in equipment and pipelines by changing the flow area formed by the valve core, its V-shaped notch, and the flow channel in the valve body. These valves offer excellent regulating performance, a constant percentage flow characteristic, and a wide adjustable range. However, in applications requiring multi-stage flow regulation, conventional V-shaped ball valves are unable to meet these flow regulation requirements.

[0005] Therefore, how to provide a two-way multi-speed adjustable V-type ball valve that can achieve multi-stage regulation of medium flow and increase the flow regulation range is a problem that technical personnel in this field urgently need to solve. Summary of the Invention

[0006] In view of this, the present invention provides a multi-position adjustable V-type ball valve, aiming to solve the above technical problems.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A multi-position adjustable V-shaped ball valve comprises a valve body, a ball core rotatably connected to an inner cavity of the valve body, a valve stem, and a locking mechanism. The inner cavity of the valve body is provided with multiple medium flow channels. The ball core is a hollow sphere, and a plurality of V-shaped channels of different sizes are provided on its spherical surface and are connected to the multiple medium flow channels.

[0009] The valve stem is vertically rotatably connected to the outer wall of the valve body, one end of which is inserted into the inner cavity of the valve body and fixed to the ball core;

[0010] The locking mechanism is sleeved on the end of the valve stem away from the ball core; the locking mechanism includes a guide sleeve and a locking sleeve, the guide sleeve is sleeved on the outer periphery of the valve stem, one end of which is fixed to the outer wall of the valve body, the locking sleeve is sleeved and fixed on the valve stem to rotate synchronously with the valve stem, and its outer wall is in rotational contact with the inner wall of the guide sleeve, and a locking member is provided between the outer wall of the locking sleeve and the inner wall of the guide sleeve to limit the rotation of the locking sleeve.

[0011] The beneficial effect of the above technical solution is that the valve stem drives the ball core to rotate, and when the ball core rotates until the V-shaped channel is connected to the medium flow channel, the ball valve works; when the V-shaped channel is not connected to the medium flow channel, the medium flow is closed; as the ball core rotates, the V-shaped channel on the ball core will transversely shear the medium in the medium flow channel. Since the flow areas of multiple V-shaped channels are different, the medium flow can be adjusted in stages as the ball core rotates.

[0012] Preferably, the locking mechanism further comprises a rotating wheel and a coil spring, the valve body is provided with an annular positioning groove on the outer wall of the guide sleeve, the rotating wheel is annular and sleeved on the outer circumference of the guide sleeve, and its inner wall is rotatably abutted against the outer wall of the guide sleeve, and one end of the rotating wheel is rotatably connected to the positioning groove; the coil spring is arranged in the positioning groove, and its two ends are respectively fixed to the bottom wall of the positioning groove and the inner wall of the end of the rotating wheel;

[0013] In which, a first limiting groove is provided on the inner wall of the rotating wheel, a second limiting groove that can be communicated with the first limiting groove is provided on the guide sleeve, and a plurality of third limiting grooves that can be communicated with the second limiting groove are provided on the outer wall of the locking sleeve. The locking member is a roller needle and is placed between the second limiting groove and the third limiting groove to limit the rotation of the locking sleeve. The locking member can slide into the first limiting groove as the rotating wheel rotates to realize the rotation of the locking sleeve.

[0014] The beneficial effect of the above technical solution is that when the entire locking mechanism is in the locking position, the positions of the first limit groove on the rotating wheel and the second limit groove on the guide sleeve are staggered. At this time, the needle roller is between the second limit groove on the guide sleeve and the third limit groove on the locking sleeve, and the needle roller is firmly stuck in the locking sleeve so that it cannot rotate, thereby realizing the locking function of the ball core; when the valve stem needs to drive the ball core to rotate, the locking mechanism needs to be in the rotating position. At this time, the rotating wheel is first rotated and the coil spring is stretched to align the first limit groove on the rotating wheel with the needle roller, and then the valve stem is rotated. The valve stem drives the locking sleeve to squeeze the needle roller between the first limit groove on the rotating wheel and the second limit groove on the guide sleeve. When the valve stem rotates smoothly to the next position, the rotating wheel is released, and the rotating wheel is rotated counterclockwise by the contraction force of the coil spring. During the rotation process, the rotating wheel squeezes the needle roller back between the second limit groove on the guide sleeve and the third limit groove on the locking sleeve. The needle roller is stuck in the locking sleeve again so that it cannot rotate, thereby realizing the locking function of the ball core.

[0015] Preferably, the valve further comprises a handle, a disc spring, and a locking nut. The handle is sleeved on an end of the valve stem away from the guide sleeve, the disc spring is sleeved on the valve stem between the handle and the guide sleeve, and the locking nut is screwed onto the valve stem so that the ends of the disc spring abut against the handle and the guide sleeve, respectively. The valve stem is rotated by the handle, the locking nut secures the handle to the valve stem, and the elastic force of the disc spring secures the guide sleeve to the valve body, thereby limiting the position of the guide sleeve.

[0016] Preferably, there are four third limiting grooves and one locking member. The locking member can be shifted within the four third limiting grooves as the locking sleeve rotates, thereby adjusting the opening of the V-shaped channel relative to the medium flow channel in multiple stages. When the ball core needs to be rotated to a different position to adjust the medium flow, the locking member is shifted within the four third limiting grooves and locked in place by the locking sleeve, thereby achieving multi-stage flow adjustment.

[0017] Preferably, the valve body comprises a first valve body, a second valve body and a valve seat, the second valve body being detachably connected to the top end of the first valve body, and having its bottom end face abutting against the top end face of the first valve body, a boss being fixed to the bottom face of the second valve body, and the circumference of the boss abutting against the inner wall of the first valve body; the valve seat being fixed to the inner cavity of the first valve body, and having its top face pressed tightly against the bottom face of the boss, and the ball core being rotatably connected to the valve seat; wherein the first valve body, the second valve body and the valve seat (4) are all provided with a medium flow channel communicating with the V-shaped channel. The ball core is confined to the inner cavity of the first valve body by the valve seat, and multi-stage flow adjustment is achieved by the rotation of the ball core.

[0018] Preferably, a sealing gasket is embedded between the top end surface of the first valve body and the bottom end surface of the second valve body opposite to the peripheral side of the boss, thereby improving the sealing performance between the first valve body and the second valve body.

[0019] Preferably, an annular groove is formed on the circumferential side of the first valve body relative to the outer wall of the valve stem, and one end of the guide sleeve is embedded in the annular groove. The movement of the guide sleeve is restricted by the cooperation of the annular groove on the side wall of the first valve body and the disc spring, thereby fixing the guide sleeve between the side wall of the first valve body and the handle.

[0020] Preferably, a limit block is fixed to the outer wall of the bottom of the valve body. The limit block can limit the installation position of the ball valve and realize the rotation and locking of the valve stem more quickly.

[0021] Preferably, the medium circulation channel and the V-shaped channel are each provided with two channels, and the two channels are separated by a partition. By virtue of the two channels of medium circulation and the two V-shaped channels having different areas, when the core rotates, the two V-shaped channels simultaneously shear the two channels of medium circulation. By utilizing the changes in the areas of the V-shaped channels and the changes in the openings of the corresponding media circulation channels, the flow rate of the medium circulation is varied, thereby achieving multi-stage flow rate regulation.

[0022] It can be seen from the above technical solution that compared with the prior art, the present invention discloses a multi-speed adjustable V-type ball valve. Compared with the ordinary V-type regulating ball valve, the flow areas of the two V-shaped channels are different, and the locking mechanism has multi-speed adjustment. After the two are combined, the number of adjustment levels is more and the adjustment range is wider, which can meet the multi-stage adjustment function of the medium flow, and effectively solves the problem that the ordinary V-type ball valve cannot meet the requirements of multi-stage flow regulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0024] Figure 1 A cross-sectional view of a V-shaped ball valve provided by the present invention;

[0025] Figure 2 A schematic diagram of the core structure provided by the present invention;

[0026] Figure 3 A cross-sectional view of the locking mechanism provided by the present invention in a locked state;

[0027] Figure 4 A cross-sectional view of the locking mechanism provided by the present invention in an unlocked state;

[0028] Figure 5 This is a cross-sectional view of the coil spring position provided by the present invention.

[0029] in,

[0030] 1-first valve body; 2-second valve body; 3-sealing gasket; 4-valve seat; 5-ball core; 51-V-shaped channel; 6-valve stem; 7-handle; 8-disc spring; 9-locking sleeve; 10-guide sleeve; 11-rotor; 12-coil spring; 13-locking piece; 14-locking nut; 15-limit block. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on 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.

[0032] See attached Figures 1 to 5 The embodiment of the present invention discloses a multi-position adjustable V-shaped ball valve, comprising a valve body, a ball core 5 rotatably connected to a cavity of the valve body, a valve stem 6, and a locking mechanism. The cavity of the valve body is provided with multiple medium flow channels. The ball core 5 is a hollow sphere, and a plurality of V-shaped channels 51 of different sizes are provided on its spherical surface and are connected to the multiple medium flow channels.

[0033] The valve stem 6 is vertically connected to the outer wall of the valve body, one end of which is inserted into the inner cavity of the valve body and fixed to the ball core 5;

[0034] The locking mechanism is sleeved on the end of the valve stem 6 away from the ball core 5; the locking mechanism includes a guide sleeve 10 and a locking sleeve 9. The guide sleeve 10 is sleeved on the outer periphery of the valve stem 6, and one end thereof is fixed to the outer wall of the valve body. The locking sleeve 9 is sleeved and fixed on the valve stem 6 to rotate synchronously with the valve stem 6, and its outer wall is rotatably abutted against the inner wall of the guide sleeve 10. A locking member 13 is provided between the outer wall of the locking sleeve 9 and the inner wall of the guide sleeve 10 to limit the rotation of the locking sleeve 9.

[0035] The ball core is provided with a V-shaped channel of different sizes corresponding to the medium flow channel. When the valve stem drives the ball core to rotate, the valve stem rotates to different angles, and the flow area of ​​the "V" mouth of the V-shaped channel corresponding to the medium flow channel is different, which can change the flow of the medium through the V-shaped channel and realize multi-stage adjustment of the flow rate. At the same time, when the valve stem rotates to the required medium flow rate, the locking piece is used to clamp the locking sleeve to limit the rotation of the locking sleeve, thereby limiting the rotation of the valve stem. At this time, the opening of the V-shaped channel relative to the medium flow channel is fixed, and the medium can circulate at the corresponding flow rate.

[0036] In this embodiment, the locking mechanism further includes a rotating wheel 11 and a coil spring 12. An annular positioning groove is formed on the outer wall of the valve body relative to the guide sleeve 10. The rotating wheel 11 is annular and is sleeved on the outer circumference of the guide sleeve 10, with its inner wall rotatably abutting against the outer wall of the guide sleeve 10. One end of the rotating wheel 11 is rotatably connected to the positioning groove; the coil spring 12 is disposed in the positioning groove, with its two ends respectively fixed to the bottom wall of the positioning groove and the inner wall of the end of the rotating wheel 11;

[0037] Among them, a first limiting groove is provided on the inner wall of the rotating wheel 11, a second limiting groove which can be communicated with the first limiting groove is provided on the guide sleeve 10, and a plurality of third limiting grooves which can be communicated with the second limiting groove are provided on the outer wall of the locking sleeve 9. The locking member 13 is a roller needle and is placed between the second limiting groove and the third limiting groove to limit the rotation of the locking sleeve 9. The locking member 13 can slide into the first limiting groove as the rotating wheel 11 rotates to realize the rotation of the locking sleeve 9.

[0038] like Figure 3 As shown, the valve stem and the ball core are connected by a profile connection, and the valve stem and the locking sleeve are also connected by a profile connection; when the entire locking mechanism is in the locking position, the first limiting groove on the rotating wheel and the second limiting groove on the guide sleeve are staggered. At this time, the needle roller is located between the second limiting groove on the guide sleeve and the third limiting groove on the locking sleeve. The needle roller firmly clamps the locking sleeve so that it cannot rotate, thereby realizing the locking function of the ball core;

[0039] like Figure 4 As shown, when the valve stem needs to drive the ball core to rotate, the locking mechanism needs to be in the rotating position. At this time, first rotate the rotary wheel and lengthen the coil spring so that the first limit groove on the rotary wheel is aligned with the rolling pin. Then rotate the valve stem. The valve stem drives the locking sleeve to squeeze the rolling pin between the first limit groove on the rotary wheel and the second limit groove on the guide sleeve. When the valve stem rotates smoothly to the next position, release the rotary wheel. The rotary wheel is driven by the contraction force of the coil spring to rotate counterclockwise. During the rotation process, the rotary wheel squeezes the rolling pin back between the second limit groove on the guide sleeve and the third limit groove on the locking sleeve. The rolling pin is stuck in the locking sleeve again so that it cannot rotate, thereby realizing the locking function of the ball core.

[0040] When the ball core needs to be rotated to different positions to adjust the medium flow, the above operation is repeated to achieve multi-level adjustment of the flow.

[0041] In order to further optimize the above technical solution, the number of third limiting grooves is four, and there is one locking member 13. The locking member 13 can switch the position in the four third limiting grooves as the locking sleeve 9 rotates to adjust the opening of the V-shaped channel 51 relative to the medium flow channel in multiple gears.

[0042] The locking sleeve is designed with four third limit grooves for locking. The guide sleeve is on the valve body and is limited by the locking nut, handle and disc spring. The guide sleeve is designed with a second limit groove for placing the needle roller, and the first limit groove for placing the needle roller is designed on the rotating wheel. It is used to place the needle roller when the main shaft needs to rotate.

[0043] In order to further optimize the above technical solution, better realize the rotation of the valve stem, and at the same time limit the displacement and rotation of the guide sleeve, so that the guide sleeve is fixed to the outer wall of the valve body, it also includes a handle 7, a disc spring 8 and a locking nut 14. The handle 7 is sleeved on the end of the valve stem 6 away from the guide sleeve 10, the disc spring 8 is sleeved on the valve stem 6 between the handle 7 and the guide sleeve 10, and the locking nut 14 is screwed on the valve stem 6 so that the two ends of the disc spring 8 are respectively in contact with the handle 7 and the guide sleeve 10.

[0044] In some other specific embodiments, the valve body includes a first valve body 1, a second valve body 2 and a valve seat 4, the second valve body 2 is detachably connected to the top end of the first valve body 1, and its bottom end face abuts against the top end face of the first valve body 1, a boss is fixed to the bottom face of the second valve body 2, and the peripheral side of the boss abuts against the inner wall of the first valve body 1; the valve seat 4 is fixed in the inner cavity of the first valve body 1 and its top face is press-fitted with the bottom face of the boss, and the ball core 5 is rotatably connected to the valve seat 4; wherein, the first valve body 1, the second valve body 2 and the valve seat 4 are all provided with a medium flow channel connected to the V-shaped channel 51.

[0045] In order to further optimize the above technical solution and improve the sealing performance between the first valve body and the second valve body, a sealing gasket 3 is embedded between the top end surface of the first valve body 1 and the bottom end surface of the second valve body 2 relative to the boss peripheral side.

[0046] In order to further optimize the above technical solution and improve the firmness of the guide sleeve, an annular groove is provided on the peripheral side of the outer wall of the first valve body 1 relative to the valve stem 6, and one end of the guide sleeve 10 is embedded in the annular groove.

[0047] In order to further optimize the above technical solution and better realize multi-stage flow regulation, a limit block 15 is fixed on the outer wall of the bottom of the valve body.

[0048] In some other specific embodiments, it is preferred that both the medium circulation channel and the V-shaped channel 51 are provided with two channels, and the two medium circulation channels are separated by a partition.

[0049] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0050] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-position adjustable V-type ball valve, characterized in that: It comprises a valve body, a ball core (5) rotatably connected to the inner cavity of the valve body, a valve stem (6) and a locking mechanism, wherein the inner cavity of the valve body is provided with multiple medium flow channels, the ball core (5) is a hollow sphere, and a plurality of V-shaped channels (51) of different sizes and correspondingly connected to the multiple medium flow channels are provided on its spherical surface; The valve stem (6) is vertically rotatably connected to the outer wall of the valve body, and one end of the valve stem is inserted into the inner cavity of the valve body and fixed to the ball core (5); The locking mechanism is sleeved on the end of the valve stem (6) away from the ball core (5); the locking mechanism includes a guide sleeve (10), a locking sleeve (9), a rotating wheel (11) and a coil spring (12); the guide sleeve (10) is sleeved on the outer periphery of the valve stem (6), and one end thereof is fixed to the outer wall of the valve body; the locking sleeve (9) is sleeved and fixed on the valve stem (6) to rotate synchronously with the valve stem (6), and its outer wall is in rotational contact with the inner wall of the guide sleeve (10); the outer wall of the locking sleeve (9) is in rotational contact with the inner wall of the guide sleeve (10), and the outer wall of the locking sleeve (9) is in rotational contact with the inner wall of the guide sleeve (10). A locking member (13) is provided between the valve body and the guide sleeve (10) to limit the rotation of the lock sleeve (9); an annular positioning groove is provided on the outer wall of the valve body relative to the guide sleeve (10); the rotating wheel (11) is annular and is sleeved on the outer periphery of the guide sleeve (10) and its inner wall is rotatably abutted against the outer wall of the guide sleeve (10); one end of the rotating wheel (11) is rotatably connected to the positioning groove; the coil spring (12) is provided in the positioning groove, and its two ends are respectively fixed to the bottom wall of the positioning groove and the inner wall of the end of the rotating wheel (11); The inner wall of the rotating wheel (11) is provided with a first limiting groove, the guide sleeve (10) is provided with a second limiting groove that can be communicated with the first limiting groove, the outer wall of the locking sleeve (9) is provided with a plurality of third limiting grooves that can be communicated with the second limiting groove, the locking member (13) is a needle roller and is placed between the second limiting groove and the third limiting groove to limit the rotation of the locking sleeve (9), and the locking member (13) can slide into the first limiting groove as the rotating wheel (11) rotates to realize the rotation of the locking sleeve (9).

2. A multi-position adjustable V-type ball valve according to claim 1, characterized in that: It also includes a handle (7), a disc spring (8) and a locking nut (14), wherein the handle (7) is sleeved on one end of the valve stem (6) away from the guide sleeve (10), the disc spring (8) is sleeved on the valve stem (6) between the handle (7) and the guide sleeve (10), and the locking nut (14) is screwed onto the valve stem (6) so that the two ends of the disc spring (8) are respectively in contact with the handle (7) and the guide sleeve (10).

3. The multi-position adjustable V-type ball valve according to claim 1, characterized in that: There are four third limiting grooves, one locking member (13), and the locking member (13) can switch positions in the four third limiting grooves as the locking sleeve (9) rotates to adjust the opening of the V-shaped channel (51) relative to the medium flow channel in multiple gears.

4. The multi-position adjustable V-type ball valve according to claim 1, characterized in that: The valve body comprises a first valve body (1), a second valve body (2) and a valve seat (4); the second valve body (2) is detachably connected to the top end of the first valve body (1), and its bottom end face abuts against the top end face of the first valve body (1); a boss is fixed to the bottom face of the second valve body (2), and the peripheral side of the boss abuts against the inner wall of the first valve body (1); the valve seat (4) is fixed to the inner cavity of the first valve body (1) and its top face is press-fitted with the bottom face of the boss, and the ball core (5) is rotatably connected to the valve seat (4); wherein, the first valve body (1), the second valve body (2) and the valve seat (4) are all provided with a medium flow channel connected to the V-shaped channel (51).

5. The multi-position adjustable V-type ball valve according to claim 4, characterized in that: A sealing gasket (3) is embedded between the top end surface of the first valve body (1) and the bottom end surface of the second valve body (2) on the side opposite to the boss.

6. The multi-position adjustable V-type ball valve according to claim 4, characterized in that: An annular groove is provided on the peripheral side of the first valve body (1) relative to the outer wall of the valve stem (6), and one end of the guide sleeve (10) is embedded in the annular groove.

7. The multi-position adjustable V-type ball valve according to claim 1, characterized in that: A limiting block (15) is fixed on the outer wall of the bottom of the valve body.

8. The multi-position adjustable V-type ball valve according to claim 1, characterized in that: The medium circulation channel and the V-shaped channel (51) are both provided with two paths, and the two medium circulation channels are separated by a partition.

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