V-shaped ceramic adjusting ball valve

Abstract

The utility model discloses a V-shaped ceramic adjusting ball valve, which relates to the technical field of valves, and comprises a valve body, the valve body comprises a left valve body, a middle valve body and a right valve body, the left valve body and the right valve body are respectively connected to two sides of the middle valve body through bolts, when the valve body transports a medium, the medium enters from the left valve body and is output from the right valve body, and when the valve body transports the medium, the valve body transports the medium. A left valve seat made of ceramic is arranged in the left valve body, a right valve seat made of ceramic is arranged in the right valve body, a ball body which is made of ceramic, used for opening or closing a channel and provided with a V-shaped groove is arranged between the left valve seat and the right valve seat, the upper end of the ball body is connected with a valve rod, and the valve rod penetrates out of the middle valve body to be connected with an executing mechanism. A ceramic lining made of ceramic is arranged in the left valve body, a filter screen is arranged between the ceramic lining and the left valve seat, and the ceramic lining is detachably connected with the left valve body. The ball valve can effectively filter hard particulate matter and prevent the hard particulate matter from abrading the sealing face of the ball body and the valve seat, and the service life of the valve is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a V-shaped ceramic regulating ball valve. Background Art

[0002] Due to its excellent corrosion resistance, the V-type ceramic regulating ball valve is suitable for severe working conditions such as strong corrosion, high temperature, and high pressure. It is characterized by a ball core flow channel with a V-shaped opening. The valve has a high adjustable ratio and can meet various flow accuracy requirements. It has a long service life and is widely used in power, petroleum, chemical, metallurgy, mining, sewage treatment and other industries. In these industries, there are working conditions with high solid content and a lot of hard particles in the medium, and the sealing surface of the ball and the valve seat of the existing V-type ceramic regulating ball valve is easily worn by hard particles, thereby affecting the service life. Summary of the invention

[0003] In view of the deficiencies in the prior art, the utility model provides a V-shaped ceramic regulating ball valve.

[0004] The technical solution provided by the utility model is:

[0005] A V-shaped ceramic regulating ball valve comprises a valve body, wherein the valve body comprises a left valve body, a middle valve body and a right valve body, wherein the left valve body and the right valve body are respectively connected to two sides of the middle valve body by bolts, and when the valve body transports a medium, the medium enters from the left valve body and is output from the right valve body, the left valve body is provided with a left valve seat made of ceramic, the right valve body is provided with a right valve seat made of ceramic, a sphere made of ceramic with a V-shaped groove for opening or closing a channel is provided between the left valve seat and the right valve seat, a valve stem is connected to the upper end of the sphere, the valve stem passes through the middle valve body and is connected to an actuator, a ceramic lining made of ceramic is provided in the left valve body, a filter is provided between the ceramic lining and the left valve seat, and the ceramic lining is detachably connected to the left valve body.

[0006] A limiting groove is arranged on the outer side of the ceramic lining, and a limiting bolt is arranged on the left valve body corresponding to the limiting groove, and the limiting bolt and the limiting groove form a limiting fit.

[0007] A metal sealing sleeve matched with the limiting bolt is arranged in the limiting groove.

[0008] A first step surface for positioning the ceramic liner is provided in the left valve body, and a first sealing ring is provided between the first step surface and the ceramic liner.

[0009] The outer ring of the filter screen is made of sealing material.

[0010] The ends of the left valve seat and the right valve seat symmetrically form arc surfaces that match the sphere, so that the left valve seat and the right valve seat fit tightly against the surface of the sphere, and the axes of the left valve seat and the right valve seat both pass through the center of the sphere.

[0011] A packing assembly is provided between the middle valve body and the valve stem. The packing assembly comprises packing and a packing gland. The packing gland is connected to the middle valve body by bolts to compress the packing.

[0012] The beneficial effects of the utility model are as follows: the utility model provides a filter at the inlet end of the medium and fixes the filter through a ceramic liner, thereby effectively filtering hard particulate matter, preventing the hard particulate matter from wearing the sealing surface of the ball and the valve seat, and extending the service life of the valve; and the ceramic liner and the valve body are provided with a detachable connection mode, so as to facilitate disassembly, maintenance and replacement of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic cross-sectional structure diagram of an embodiment of the utility model;

[0014] Figure 2 for Figure 1 A partial enlarged view of . DETAILED DESCRIPTION

[0015] The embodiments of the present utility model will be further described below in conjunction with the accompanying drawings.

[0016] like Figure 1-2 As shown, a V-type ceramic regulating ball valve includes a valve body, which includes a left valve body 1, a middle valve body 2, and a right valve body 3. The left valve body 1 and the right valve body 3 are respectively connected to the two sides of the middle valve body 2 by bolts 4. When the valve body transports medium, the medium enters from the left valve body 1 and is output from the right valve body 3. A left valve seat 5 made of ceramic is arranged in the left valve body 1, and a right valve seat 6 made of ceramic is arranged in the right valve body 3. A sphere 7 with a V-shaped groove made of ceramic is arranged between the left valve seat 5 and the right valve seat 6 for opening or closing the channel. The ends of the left valve seat 5 and the right valve seat 6 are symmetrically formed with arc surfaces that match the surface of the sphere 7, so that the left valve seat 5 and the right valve seat 6 are tightly fitted with the surface of the sphere 7. The axes of the left valve seat 5 and the right valve seat 6 both pass through the center of the sphere 7. A valve stem 8 is connected to the upper end of the sphere 7, and the valve stem 8 passes through the middle valve body 2 and is connected to the actuator 11.

[0017] In this embodiment, a ceramic lining 12 made of ceramic is provided in the left valve body 1, and a filter screen 13 is provided between the ceramic lining 12 and the left valve seat 5. The filter screen 13 can effectively filter hard particulate matter, prevent the hard particulate matter from wearing the sealing surface of the ball and the valve seat, and extend the service life of the valve. The outer ring of the filter screen 13 is made of polytetrafluoroethylene material. The ceramic lining 12 and the left valve seat 5 respectively clamp the outer ring of the filter screen 13 from both ends to fix the filter screen 13. A limiting groove 16 is provided on the outside of the ceramic lining 12, and a limiting bolt 15 is provided on the left valve body 5 corresponding to the limiting groove 16. A metal sealing sleeve 17 matched with the limiting bolt is provided in the limiting groove 16, and the limiting bolt 15 and the limiting groove 16 constitute a limiting fit.

[0018] A first step surface 14 for positioning the ceramic lining 12 is provided in the left valve body 1, and a first sealing ring 18 is provided between the first step surface 14 and the ceramic lining 12. When assembling the filter 13, the outer ring of the filter 13 is pressed against the outer side of the left valve seat 5, and then the ceramic lining 12 is installed so that its upper end is against the first step surface 14 and its lower end is against the outer ring of the filter 13. The ceramic lining 12 is rotated so that the limiting groove 16 is aligned with the limiting bolt 15, and the limiting bolt 15 is tightened so that it is limited in the metal sealing sleeve 17 of the limiting groove 16 to complete the installation. Otherwise, the filter 13 can be quickly removed, which is convenient for disassembly, assembly, maintenance and replacement.

[0019] In this embodiment, a packing assembly is provided between the middle valve body 2 and the valve stem 5. The packing assembly includes a packing 9 and a packing gland 10. The packing gland 10 is connected to the middle valve body 2 by bolts to compress the packing 9, thereby ensuring that the medium does not leak from between the middle valve body 2 and the valve stem 5, thereby ensuring the reliability of the valve sealing.

[0020] The embodiments should not be regarded as limiting the present invention, and any non-creative improvements made based on the spirit of the present invention should be regarded as falling within the protection scope of the present invention.

Claims

1. A V-shaped ceramic regulating ball valve, comprising a valve body, the valve body comprising a left valve body, a middle valve body and a right valve body, the left valve body and the right valve body are respectively connected to the two sides of the middle valve body by bolts, when the valve body transports a medium, the medium enters from the left valve body and is output from the right valve body, the left valve body is provided with a left valve seat made of ceramic, the right valve body is provided with a right valve seat made of ceramic, a sphere with a V-shaped groove made of ceramic for opening or closing a channel is provided between the left valve seat and the right valve seat, the upper end of the sphere is connected to a valve stem, the valve stem passes through the middle valve body and is connected to an actuator, characterized in that: A ceramic lining made of ceramic is provided in the left valve body, a filter is provided between the ceramic lining and the left valve seat, the ceramic lining is detachably connected to the left valve body, a limiting groove is provided on the outer side of the ceramic lining, a limiting bolt is provided on the left valve body corresponding to the limiting groove, the limiting bolt and the limiting groove form a limiting fit, a metal sealing sleeve matched with the limiting bolt is provided in the limiting groove, a first step surface for positioning the ceramic lining is provided on the left valve body, and a first sealing ring is provided between the first step surface and the ceramic lining.

2. A V-shaped ceramic regulating ball valve according to claim 1, characterized in that: The outer ring of the filter screen is made of sealing material.

3. A V-shaped ceramic regulating ball valve according to claim 1, characterized in that: The ends of the left valve seat and the right valve seat symmetrically form arc surfaces that match the sphere, so that the left valve seat and the right valve seat fit tightly against the surface of the sphere, and the axes of the left valve seat and the right valve seat both pass through the center of the sphere.

4. A V-shaped ceramic regulating ball valve according to claim 1, characterized in that: A packing assembly is provided between the middle valve body and the valve stem. The packing assembly comprises packing and a packing gland. The packing gland is connected to the middle valve body by bolts to compress the packing.

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