A high temperature hexagonal hole wear-resistant ball valve

Abstract

The present invention relates to a high-temperature hexagonal hole wear-resistant ball valve, comprising a valve body, a valve cover, a ball and a valve stem. The ball is arranged in an inner cavity of the valve body, the valve cover is fixed on the front side of the inner cavity of the valve body, the valve stem is connected to the upper end of the ball, the inner cavity is located at the front and rear sides of the ball and front and rear valve seats are arranged, the rear valve seat is pressed and fixed in the valve body by a valve seat pressing ring, the valve seat pressing ring is fixed in the valve body by bolts, the front valve seat is passed through the valve cover, and a butterfly spring group is arranged between the valve cover and the front valve seat to press the ball, a hexagonal hole flow channel is provided in the ball, and the matched front and rear valve seats both have hexagonal hole flow channels, a valve stem bearing is sealed and installed between the valve stem and the valve body, the upper end of the valve stem extends to the outside of the valve body and is keyed to a driving sleeve, the driving sleeve is rotatably connected to a bracket, and the bracket is fixed to the upper end of the valve body. The high-temperature hexagonal hole wear-resistant ball valve increases the flow area at the moment of opening, reduces the flow rate of the medium, improves the scouring resistance of the ball, prolongs the service life of the valve, and reduces the daily maintenance cost.

Description

Technical Field

[0001] The invention relates to a ball valve, in particular to a high-temperature hexagonal hole wear-resistant ball valve. Background Art

[0002] The ball valve is one of the common valves. Its opening and closing part is a sphere. There is a flow in the sphere, which is driven by the valve stem to rotate. The flow channel of the ball is connected or disconnected with the flow of the front and rear valve seats to realize the opening and closing of the valve. The flow channel of the ball and the flow channels of the front and rear valve seats of the traditional ball valve are all circular flow channels. When the valve is opened, the flow rate of the medium is very fast, which seriously erodes the ball mouth and easily causes damage to the ball, thereby causing damage to the valve, shortening the service life of the valve, and increasing daily maintenance costs. Summary of the invention

[0003] In view of the above shortcomings, the applicant has conducted research and improvement, and provided a high-temperature hexagonal hole wear-resistant ball valve.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A high-temperature hexagonal hole wear-resistant ball valve comprises a valve body, a valve cover, a ball and a valve stem, the ball is arranged in the inner cavity of the valve body, the valve cover is fixed to the front side of the inner cavity of the valve body by a stud nut, the valve stem is connected to the upper end of the ball, the inner cavity is located at the front and rear sides of the ball and a front valve seat and a rear valve seat are arranged, the rear valve seat is pressed and fixed in the valve body by a valve seat pressure ring, the valve seat pressure ring is fixed in the valve body by bolts, the front valve seat is passed through the valve cover, and a butterfly spring group is arranged between the valve cover and the front valve seat to press the ball, a hexagonal hole flow channel is provided in the ball, and the matching front valve seat and rear valve seat both have hexagonal hole flow channels, a valve stem bearing is sealed and installed between the valve stem and the valve body, the upper end of the valve stem extends to the outside of the valve body and is keyed to a driving sleeve, the driving sleeve is rotatably connected to a bracket, and the bracket is fixed to the upper end of the valve body.

[0006] As a further improvement of the above technical solution:

[0007] A C-shaped ring and a spiral wound gasket are also arranged between the valve cover and the valve body.

[0008] The butterfly spring group supports a packing press ring and a dustproof packing press ring on both sides respectively, and packing is filled between the packing press ring and the front valve seat. The dustproof packing press ring is supported on one side of the gasket at one end away from the butterfly spring group, and the other side of the gasket is supported on a step set on the valve cover, and dustproof packing is filled between the gasket and the dustproof packing press ring.

[0009] A valve stem support seat is arranged on the valve stem, and a thrust pad is sleeved between the valve stem support seat and the valve body.

[0010] The valve stem is located on the valve stem bearing and is provided with packing for sealing. A packing sleeve for compressing the packing is provided above the packing. The upper end of the packing sleeve extends to the outside of the valve body, and a packing pressure plate is provided on the packing sleeve. The packing pressure plate is connected to the valve body through a screw and a nut.

[0011] An anti-loosening component is sleeved on the screw rod of the packing pressure plate and located between the nut and the packing pressure plate. The anti-loosening component includes a butterfly-shaped limiting sleeve and a butterfly-shaped spring.

[0012] The bracket is positioned and connected to the valve body through a positioning pin, and is fixedly connected to the valve body through screws and anti-loosening washers.

[0013] The bracket is provided with a positioning mounting hole, to which a positioning plate is fixedly connected, the driving sleeve is passed through the through hole of the positioning plate, and a driving sleeve bearing is arranged between the positioning plate and the driving sleeve, and the bracket is also connected with studs, nuts and anti-loosening washers for fixing the actuator.

[0014] The positioning plate is positioned and connected to the bracket via positioning pins, and is fixedly connected to the bracket via screws and anti-loosening washers.

[0015] The beneficial effects of the present invention are as follows: the flow channels of the high-temperature hexagonal hole wear-resistant ball valve ball, the front valve seat and the rear valve seat all adopt hexagonal hole flow channels, which optimizes the ball mouth from traditional local scouring to surface scouring, increases the flow area at the moment of opening, reduces the medium flow rate, and improves the scouring resistance of the ball. As the opening angle increases, the flow channel shape is a parallel hexagon, and the flow cross-sectional area gradually increases, reducing the impact of the fluid on the ball and the flow channel, the ball is not easily damaged, the service life of the valve is extended, and the daily maintenance cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a cross-sectional view of the high-temperature hexagonal hole wear-resistant ball valve provided by the present invention.

[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0018] Figure 3 for Figure 1 Enlarged view of point B in the middle.

[0019] Figure 4 This is a side view of the high-temperature hexagonal hole wear-resistant ball valve provided by the present invention.

[0020] Figure 5 This is a schematic diagram of the opening moment of the high-temperature hexagonal hole wear-resistant ball valve provided by the present invention.

[0021] In the figure: 1. valve body; 11. inner cavity; 2. valve cover; 21. C-ring; 22. spiral wound gasket; 3. ball; 4. valve stem; 41. valve stem bearing; 42. valve stem support seat; 43. thrust pad; 44. packing sleeve; 45. packing pressure plate; 46. butterfly limit sleeve; 47. butterfly spring; 5. front valve seat; 51. butterfly spring assembly; 52. packing pressure ring; 53. dustproof packing pressure ring; 54. gasket; 6. rear valve seat; 61. valve seat pressure ring; 7. hexagonal hole flow channel; 8. drive sleeve; 9. bracket; 91. positioning plate; 92. drive sleeve bearing. DETAILED DESCRIPTION

[0022] The specific implementation of this embodiment is described below in conjunction with the accompanying drawings.

[0023] like Figures 1 to 5As shown, the high-temperature hexagonal hole wear-resistant ball valve of this embodiment includes a valve body 1, a valve cover 2, a ball 3 and a valve stem 4. The ball 3 is arranged in the inner cavity 11 of the valve body 1, and the valve cover 2 is fixed to the front side of the inner cavity 11 of the valve body 1 by means of stud nuts. A C-shaped ring 21 and a spiral wound gasket 22 for sealing are also arranged between the valve cover 2 and the valve body 1. The valve stem 4 is connected to the upper end of the ball 3. The inner cavity 11 is located in front of and behind the ball 3. A front valve seat 5 and a rear valve seat 6 are arranged. The rear valve seat 6 is pressed and fixed in the valve body 1 by a valve seat pressing ring 61, and the back of the rear valve seat 6 is in contact with the plane of the valve body 1 and the rear valve seat 6 through Fine grinding ensures the plane seal between the rear valve seat 6 and the valve body 1. The valve seat pressure ring 61 is fixed in the valve body 1 by bolts and anti-loosening gaskets. The front valve seat 5 is inserted into the valve cover 2, and a butterfly spring group 51 is arranged between the valve cover 2 and the front valve seat 5 to make the front valve seat 5 press the ball 3. The two sides of the butterfly spring group 51 respectively support the packing pressure ring 52 and the dustproof packing pressure ring 53. The packing pressure ring 52 and the front valve seat 5 are filled with packing. The dustproof packing pressure ring 53 is supported on one side of the gasket 54 away from the butterfly spring group 51, and the other side of the gasket 54 is supported on the step set on the valve cover 2. On the upper side, dustproof packing is filled between the gasket 54 and the dustproof packing pressure ring 53, and the dustproof packing includes dustproof packing A and dustproof packing B. The dustproof packing A / B and packing on both sides are pressed by the butterfly spring group 51 to realize the dustproof seal between the front valve seat 5 and the valve cover 2. A hexagonal hole flow channel 7 is opened in the ball 3, and the matching front valve seat 5 and rear valve seat 6 both have hexagonal hole flow channels 7, and the hexagonal hole flow channels 7 of the ball 3, the front valve seat 5 and the rear valve seat 6 are hardened by special treatment, which can improve the wear resistance and erosion resistance of the hexagonal hole flow channel 7, and a valve stem bearing is sealed and installed between the valve stem 4 and the valve body 1. 41, the upper end of the valve stem 4 extends to the outside of the valve body 1 and is keyed to the drive sleeve 8, the valve body 1 is positioned and connected to the bracket 9 by a positioning pin, and the bracket 9 is fixedly connected to the valve body 1 by screws and anti-loosening washers, a positioning mounting hole is provided on the bracket 9, the positioning mounting hole is positioned and connected to the positioning plate 91 by a positioning pin, and the positioning plate 91 is fixedly connected to the bracket 9 by screws and anti-loosening washers, the drive sleeve 8 is passed through the through hole of the positioning plate 91, and a drive sleeve bearing 92 is arranged between the positioning plate 91 and the drive sleeve 8, and the bracket 9 is also connected with studs, nuts and anti-loosening washers for fixing the actuator.

[0024] A valve stem support seat 42 is arranged on the valve stem 4, and a thrust pad 43 is arranged between the valve stem support seat 42 and the valve body 1. A packing for sealing is arranged on the valve stem 4 on the valve stem bearing 41, and a packing pressing sleeve 44 for pressing the packing is arranged above the packing. The upper end of the packing pressing sleeve 44 extends to the outside of the valve body 1, and a packing pressing plate 45 is arranged on the packing pressing sleeve 44. The packing pressing plate 45 is connected to the valve body 1 through a screw and a nut. An anti-loosening component is arranged on the screw of the packing pressing plate 45 between the nut and the packing pressing plate 45. The anti-loosening component includes a butterfly limit sleeve 46 and a butterfly spring 47. The anti-loosening component can provide continuous pre-tightening force to prevent the packing from loosening due to temperature alternation and affecting the sealing.

[0025] When the high-temperature hexagonal hole wear-resistant ball valve of this embodiment is used, the upper end of the drive sleeve 8 is connected to the drive end of the actuator, and then connected to the actuator through the studs, nuts and anti-loosening washers on the bracket 9. The high-temperature hexagonal hole wear-resistant ball valve can be connected to the actuator through the bracket 9, and the front section of the valve cover 2 and the rear end of the valve body 1 are connected to the conveying pipeline. The drive sleeve 8, the valve stem 4 and the ball 3 can be driven by the drive end of the actuator to perform a 90° rotation motion, thereby realizing the opening and closing action of the ball valve.

[0026] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. The present invention may be modified in any form without violating the basic structure of the present invention.

Claims

1. A high temperature hexagonal hole wear-resistant ball valve, characterized in that: The valve comprises a valve body (1), a valve cover (2), a ball (3) and a valve stem (4), wherein the ball (3) is arranged in an inner cavity (11) of the valve body (1), the valve cover (2) is fixed to the front side of the inner cavity (11) of the valve body (1) by means of a stud nut, a C-shaped ring (21) and a spiral wound gasket (22) are also arranged between the valve cover (2) and the valve body (1), the valve stem (4) is connected to the upper end of the ball (3), a front valve seat (5) and a rear valve seat (6) are arranged in the inner cavity (11) at the front and rear sides of the ball (3), and the rear valve seat (6) is pressed and fastened by a valve seat pressure ring (61). The valve seat pressure ring (61) is fixed in the valve body (1) by bolts, the front valve seat (5) is inserted into the valve cover (2), and a butterfly spring group (51) is arranged between the valve cover (2) and the front valve seat (5) so that the front valve seat (5) presses the ball (3). The two sides of the butterfly spring group (51) respectively support a packing pressure ring (52) and a dustproof packing pressure ring (53). A packing is filled between the packing pressure ring (52) and the front valve seat (5), and the dustproof packing pressure ring (53) is supported on one side of the gasket (54) at one end away from the butterfly spring group (51). The gasket (54) is supported on a step provided on the valve cover (2), and the other side of the gasket (54) is supported on a step provided on the valve cover (2), a dustproof packing is filled between the gasket (54) and the dustproof packing pressure ring (53), a hexagonal hole flow channel (7) is provided in the sphere (3), and the matching front valve seat (5) and rear valve seat (6) are both provided with a hexagonal hole flow channel (7), a valve stem bearing (41) is sealed and installed between the valve stem (4) and the valve body (1), a packing for sealing is provided on the valve stem (4) located on the valve stem bearing (41), a packing sleeve (44) for pressing the packing is provided above the packing, and the packing The upper end of the packing sleeve (44) extends to the outside of the valve body (1), and a packing pressure plate (45) is arranged on the packing packing sleeve (44), and the packing pressure plate (45) is connected to the valve body (1) via a screw and a nut. A valve stem support seat (42) is arranged on the valve stem (4), and a thrust pad (43) is arranged between the valve stem support seat (42) and the valve body (1). The upper end of the valve stem (4) extends to the outside of the valve body (1) and is keyed to a drive sleeve (8), and the drive sleeve (8) is rotatably connected to a bracket (9), and the bracket (9) is fixed to the upper end of the valve body (1).

2. The high temperature hexagonal hole wear-resistant ball valve according to claim 1, characterized in that: An anti-loosening component is sleeved on the screw of the packing pressure plate (45) and located between the nut and the packing pressure plate (45), and the anti-loosening component comprises a butterfly-shaped limiting sleeve (46) and a butterfly-shaped spring (47).

3. The high temperature hexagonal hole wear-resistant ball valve according to claim 1, characterized in that: The bracket (9) is positioned and connected to the valve body (1) via a positioning pin, and is fixedly connected to the valve body (1) via screws and anti-loosening washers.

4. The high temperature hexagonal hole wear-resistant ball valve according to claim 1 or 3, characterized in that: The bracket (9) is provided with a positioning installation hole, a positioning plate (91) is fixedly connected to the positioning installation hole, the driving sleeve (8) is inserted into the through hole of the positioning plate (91), and a driving sleeve bearing (92) is arranged between the positioning plate (91) and the driving sleeve (8), and a stud, a nut and a locking washer for fixing the actuator are also connected to the bracket (9).

5. The high temperature hexagonal hole wear-resistant ball valve according to claim 4, characterized in that: The positioning plate (91) is positioned and connected to the bracket (9) via positioning pins, and is fixedly connected to the bracket (9) via screws and anti-loosening washers.

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