Integrated full-lining and full-surrounding ceramic ball valve

Abstract

The utility model relates to an integrated full-lining full-surrounding ceramic ball valve which comprises a valve body, a valve ball, a valve seat, a valve rod and a support, the support is arranged at the top of the valve body, the valve body is integrated and comprises a flange, a support platform and a stuffing box which are welded, the valve ball is arranged in the center of the valve body and attached to the cambered surface of the valve seat in the valve body, and meanwhile the valve ball and the valve rod are both perpendicularly arranged. Small steps at the two ends of the valve seat extend to the two sides of the valve body and are flush with flange sealing faces on the two sides of the valve body, a valve body channel is made of full-ceramic materials, one end of the valve rod penetrates through a valve rod hole to extend into the valve ball, and the other end of the valve rod is higher than the support and connected with a driving device. The stuffing and the stuffing pressing sleeve are sequentially arranged in the stuffing box from bottom to top, the pressing plate is arranged at the top of the stuffing box, and the pressing plate adjusts extrusion through the pressing plate bolt and the pressing plate nut. The ceramic check valve is simple in structure and convenient to assemble and maintain, meanwhile, the whole valve body channel is made of full-ceramic materials, corrosion resistance is achieved, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, specifically an integrated, fully lined, and fully enclosed ceramic ball valve. Background Technology

[0002] A ceramic ball valve is a valve in which the valve stem drives the ball to rotate around the valve's axis. Ceramic ball valves are mainly used in pipelines for shut-off, distribution, and changing the flow direction of media. They require only a 90-degree rotation and a very small torque to achieve a tight seal. Ceramic ball valves are best suited for on / off, shut-off, and regulating applications.

[0003] The existing ceramic ball valves on the market generally have the following disadvantages: they are relatively long, taking up installation space; they have many parts, making assembly and maintenance more complicated; the structure of the body-cover connection has many leakage points; the valve as a whole is relatively large and heavy, making installation inconvenient. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides an integrated, fully lined, and fully enclosed ceramic ball valve that features a simple structure, easy assembly, and excellent sealing performance.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: an integrated, fully lined, and fully enclosed ceramic ball valve, comprising a valve body, a valve ball, a valve seat, a valve stem, and a support. The support is located on the top of the valve body. The valve body is integral and includes an integrally welded flange, a support platform, and a stuffing box. The valve ball is located at the center of the valve body and fits against the arc surface of the valve seat inside the valve body. Simultaneously, both the valve ball and the valve stem are vertically arranged. The small steps at both ends of the valve seat extend to both sides of the valve body and are flush with the sealing surfaces of the flanges on both sides of the valve body. Both the valve seat and the valve ball are fully lined and fully enclosed ceramic ball valves. The valve is made of ceramic material, and the valve seat, valve ball, and valve body are all provided with concentrically connected valve stem holes. The inner diameter of the valve stem hole matches the outer diameter of the valve stem. One end of the valve stem passes through the valve stem hole and extends into the interior of the valve ball, while the other end of the valve stem extends beyond the bracket and is connected to the drive device. The stuffing box is arranged along the outer circumference of the valve stem. The stuffing box contains, from bottom to top, packing and a packing sleeve. A pressure plate is provided at the top of the stuffing box. The bottom end face of the pressure plate is tangent to the top end face of the packing sleeve. The pressure plate and the packing sleeve are locked and adjusted by matching pressure plate bolts and pressure plate nuts.

[0006] Preferably, the valve seat includes two symmetrically arranged split valve seats, which are locked together by end cap adjusting nuts located at the flange. The inner semicircles of the two split valve seats completely surround the valve ball, and the end faces of the two split valve seats are precision ground to achieve a mirror finish and form a seal.

[0007] As preferred, the flat section of the packing gland, packing, packing press sleeve and press plate is hollow circular, and the inner diameter of the packing gland, packing, packing press sleeve and press plate matches the outer diameter of the valve stem, and the outer diameter of the packing and packing press sleeve matches the inner diameter of the packing gland.

[0008] As preferred, the valve stem step is lower than the packing gland inner step, avoiding the packing extrusion causing the valve stem seizure.

[0009] As preferred, the large step of the valve seat and the valve body embedded joint is provided with a sealing ring.

[0010] As preferred, the small step of the valve seat and the inner diameter of the valve body passage match and pass through.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The utility model has simple structure, is convenient for assembling and maintaining, and the whole valve body passage is full ceramic material, is isolated from the metal valve body, cannot be corroded by the medium flowing through, improves the service life of the ceramic ball valve.

[0013] 2. The utility model reaches mirror surface formation sealing through the precise grinding of the two split valve seat end faces, and the valve seat and valve ball are global surface sealing, then adjust and extrude the press plate through the cooperation of the press plate nut and press plate bolt, push the force to the packing press sleeve, extrude the packing, and the packing and valve stem are tightly matched to form sealing, and the sealing property of the whole device is improved through the setting of the sealing ring, and higher use effect is ensured.

[0014] 3. The utility model has small volume, does not occupy space, and the application scene is not limited. DRAWINGS

[0015] Figure 1 It is the structure schematic diagram of a preferred mode of the utility model. EMBODIMENT

[0016] The utility model will be combined with the following Figure 1 The utility model will be combined with the following

[0017] The integrated full-lining full-enclosing ceramic ball valve comprises a valve body 1, a valve ball 2, a valve seat, a valve stem 4 and a bracket 5, the bracket is arranged on the top of the valve body, the end of the valve stem close to the bracket is square, and the end of the valve stem away from the bracket is flat, the valve body is integrated, and the valve body comprises an integrated welded flange 13, a bracket platform and a stuffing box 6, the valve ball is arranged in the center of the valve body and is attached to the arc surface of the valve seat in the valve body, and the valve ball and the valve stem are both arranged vertically, the small steps at both ends of the valve seat extend to both sides of the valve body and are flush with the sealing surface of the flange on both sides of the valve body, and the valve seat and the valve ball are both made of full ceramic material, so that the whole passage of the valve body is made of full ceramic material and is isolated from the metal valve body, the valve has no external leakage point at the connection after installation, and is safe and reliable. The valve seat, the valve ball and the valve body are all provided with a valve stem hole connected concentrically, the inner diameter of the valve stem hole is matched with the outer diameter of the valve stem, one end of the valve stem penetrates into the valve ball through the valve stem hole, the other end of the valve stem is higher than the bracket and is connected with a driving device, the stuffing box is arranged along the outer circumference of the valve stem, the valve stem step 12 is lower than the inner step of the stuffing box, so that the valve stem is prevented from being locked due to the extrusion of the packing. The stuffing box is sequentially provided with packing 7 and packing sleeve 8 from bottom to top, the top of the stuffing box is provided with a pressing plate, the bottom end surface of the pressing plate is tangent to the top end surface of the packing sleeve, and the pressing plate and the packing sleeve are locked and adjusted through matched pressing plate bolts and pressing plate nuts. The cross section of the stuffing box, the packing, the packing sleeve and the pressing plate are all hollow circular shapes, and the inner diameters of the stuffing box, the packing, the packing sleeve and the pressing plate are matched with the outer diameter of the valve stem, and the outer diameters of the packing and the packing sleeve are matched with the inner diameter of the stuffing box. The valve stem is matched with the packing and the packing sleeve, the pressing plate is locked and adjusted through the pressing plate bolts and nuts, so that the packing sleeve extrudes the packing to form a seal.

[0018] Specifically, the valve seat comprises two symmetrical split valve seats 3, the two split valve seats are locked through end cap adjusting nuts 10, the end cap adjusting nuts are arranged at the flanges, the inner semicircles of the two split valve seats fully enclose the valve ball, and the end faces of the two split valve seats are polished to mirror finish to form a seal.

[0019] Specifically, the valve seat small step penetrates through the inner diameter of the valve body passage, and the valve seat large step is provided with a sealing ring 11 at the embedded joint with the valve body, so that the sealing property of the whole device is improved.

[0020] In the implementation process, the valve is installed through the following steps:

[0021] S1, the valve seat is installed in the inner cavity of the valve body, the valve seat small step penetrates through the inner diameter of the valve body passage and is flush with the flange sealing surface, and the valve seat valve stem hole is concentric and vertical with the valve body valve stem hole;

[0022] S2, the valve ball is arranged at the center of the valve body and is attached to the arc surface of the valve seat, meanwhile, the valve stem hole is tangent to the valve stem flat square and is perpendicular to the valve body valve stem hole, when the valve stem is installed, the valve stem step is ensured to be slightly lower than the inner step of the stuffing box, so that the valve stem is prevented from being locked due to the extrusion of the packing;

[0023] S3, install the packing, the packing sleeve, and the inner diameter of the packing and the packing sleeve is matched with the outer diameter of the valve rod, the outer diameter of the packing and the packing sleeve is matched with the inner diameter of the packing box;

[0024] S4, install the pressing plate, the pressing plate bolt and the pressing plate nut, the center hole of the pressing plate is matched with the valve rod, the end surface of the pressing plate is tangent to the end surface of the packing sleeve, the bolt holes on both sides of the pressing plate are matched with the pressing plate bolts, and the pressing plate is locked and adjusted by the pressing plate nut to push the force to the packing sleeve and extrude the packing, so that the packing is tightly matched with the valve rod to form a seal;

[0025] S5, the two split valve seats are attached to the valve ball, the small step of the valve seat is matched with the inner diameter of the end cover adjusting nut to pass through, and is flush with the end cover adjusting nut sealing surface and the valve body flange sealing surface, and the valve rod hole of the valve seat is concentric and perpendicular to the valve body valve rod hole;

[0026] S6, the end cover adjusting nut is matched with the inner thread of the valve body, and is locked to push the two split valve seats to attach to the valve ball, the step of the end cover adjusting nut is tangent to the step of the valve body, and the end surface is flush with the valve body flange sealing surface;

[0027] S7, the bracket is installed on the valve body bracket platform and fixed with the outer hexagonal bolt, perpendicular to the valve rod, and the square head of the valve rod is higher than the bracket and connected with the driving shaft of the driving device.

[0028] The ordinary valve has nearly 60 parts, and the device reduces 3 / 4 of the parts due to the integrated design of the valve body, greatly reduces the volume, is suitable for more application scenarios, and drives the valve ball to move up and down through the valve rod in the working process, is used to cut off, distribute and change the flow direction of the medium, and since the whole channel is made of ceramic material, the device is not easy to be corroded by the medium, and the sealing effect between the connections of various structural parts is good, which greatly improves the service life and use effect.

[0029] The above describes the technical solutions provided by the embodiments of the present application in detail, and the principles and implementation modes of the embodiments of the present application are described by applying specific examples; the above description of the embodiments is only applicable to help understand the principles of the embodiments of the present application; meanwhile, for those skilled in the art, according to the embodiments of the present application, the specific implementation modes and application ranges will be changed, and the above description should not be understood as a limitation of the present application.

Claims

1. An integrated full-bushing full-casing ceramic ball valve, characterized in that: The valve includes a valve body (1), a valve ball (2), a valve seat, a valve stem (4) and a bracket (5), the bracket is arranged on the top of the valve body, the valve body is integrated and includes an integrated welded flange (13), a bracket platform and a stuffing box (6), the valve ball is arranged in the center of the valve body and is in contact with the arc surface of the valve seat in the valve body, the valve ball and the valve stem are both arranged vertically, the small steps at both ends of the valve seat extend to both sides of the valve body and are flush with the sealing surface of the flange on both sides of the valve body, the valve seat and the valve ball are both made of full ceramic material and are provided with a valve stem hole connected concentrically, the inner diameter of the valve stem hole matches the outer diameter of the valve stem, one end of the valve stem penetrates the valve stem hole and extends into the interior of the valve ball, the other end of the valve stem is higher than the bracket and is connected with a driving device, the stuffing box is arranged along the outer circumference of the valve stem, the stuffing box is sequentially provided with a packing (7) and a packing pressing sleeve (8) from bottom to top, the top of the stuffing box is provided with a pressing plate (9), the bottom end surface of the pressing plate is tangent to the top end surface of the packing pressing sleeve, and the pressing plate and the packing pressing sleeve are locked and adjusted by matching pressing plate bolts and pressing plate nuts.

2. The integrated full-bushing full-jacketed ceramic ball valve according to claim 1, wherein: The valve seat includes two symmetrical split valve seats (3), the two split valve seats are locked by end cap adjusting nuts (10), the end cap adjusting nuts are arranged at the flanges, the inner semicircle of the two split valve seats fully surrounds the valve ball, and the end faces of the two split valve seats are polished to mirror finish to form a seal.

3. The integrated full-bushing full-jacketed ceramic ball valve according to claim 1, wherein: The flat sections of the stuffing box, the packing, the packing pressing sleeve and the pressing plate are all hollow circular shapes, the inner diameters of the stuffing box, the packing, the packing pressing sleeve and the pressing plate match the outer diameter of the valve stem, and the outer diameters of the packing and the packing pressing sleeve match the inner diameter of the stuffing box.

4. The integrated full-bushing full-jacketed ceramic ball valve according to claim 1, wherein: The valve stem step (12) is lower than the inner step of the stuffing box.

5. The integrated full-bushing full-jacketed ceramic ball valve according to claim 1, wherein: The large step of the valve seat is provided with a sealing ring (11) at the embedded joint with the valve body.

6. The integrated full-bushing full-jacketed ceramic ball valve according to claim 1, wherein: The small step of the valve seat matches the inner diameter of the valve body passage and penetrates through.

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