Full-lining ceramic sliding plate valve

Abstract

The utility model relates to a full lining ceramic sliding plate valve which comprises a valve body, a valve seat, a valve core, a valve rod and a fixing support, the fixing support is arranged at the top end of the valve body, valve covers are arranged at two ends of the valve body, a stuffing box is arranged at the upper end of the valve body and sleeved on the periphery of the valve rod, stuffing and a stuffing pressing sleeve are sequentially arranged in the stuffing box from bottom to top, and a pressing plate is arranged at the top of the stuffing box. Middle bodies are arranged between the upper end and the lower end of the valve seat and the inner wall of the valve body, connecting pipes are arranged at the left end and the right end of the valve seat, a valve body channel is made of full-lining ceramic materials, one end of the valve rod is connected with the valve element, and the other end of the valve rod is higher than the fixing support and connected with a driving device. The valve element is driven by the valve rod to move up and down to conduct straight stroke opening and closing and is combined with the valve seat to form any circulation shape. The service life of the valve element is prolonged by adopting a straight stroke opening and closing structure and a channel full-lining ceramic structure, the stroke is short, different flow control can be realized, and the sealing performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to ceramic valve technical field, specifically is a kind of full ceramic slide plate valve. BACKGROUND

[0002] The ceramic valve on market, there are ceramic ball valve, ceramic gate valve, ceramic butterfly valve, ceramic half ball valve etc., the opening and closing form of these valves is two, execution program and angle stroke. In actual use, there are the following problems:

[0003] 1, ceramic ball valve exists accumulation material and leads to jam, residual medium influences the purity of material;2, gate valve's opening and closing stroke is long, and the volume is big;3, the valve core of ceramic ball valve is easily broken because of unable to control torque;4, gate valve cannot be full ceramic, and is not corrosion resistant;5, sealing leaks on valve rod;6, friction torque is big, and easy to wear. UTILITY MODEL CONTENTS

[0004] In view of above problem, the utility model provides a kind of full ceramic slide plate valve of straight stroke opening and closing, improves service life and sealing effect.

[0005] The utility model provides a kind of full ceramic slide plate valve, including valve body, valve seat, valve core, valve rod and fixed support, the fixed support is located at valve body top end, the both ends of valve body are equipped with valve cover and the valve cover is locked with valve body by bolt device, the upper end of valve body is equipped with packing gland and the packing gland is sleeved around valve rod, the packing gland is equipped with packing and packing sleeve from below to above in sequence, the top of packing gland is equipped with pressing plate, the bottom end surface of pressing plate is tangent with the top end surface of packing sleeve, and pressing plate and packing sleeve are locked and adjusted by matching pressing plate bolt, pressing plate nut, the valve core is located at the center of valve body and is attached with valve seat plane, and valve core and valve rod are vertically arranged, the upper and lower ends of valve seat are equipped with middle body with valve body inner wall, the outer diameter of each middle body is concentrically matched with valve body inner diameter, the left and right ends of valve seat are equipped with connecting pipe, the outer diameter of each connecting pipe is attached with valve cover inner wall, the valve core, valve seat, middle body and connecting pipe are made of ceramic material, one end of valve rod is sequentially penetrated middle body, valve seat, valve core from above to below and is connected with valve core, the other end of valve rod is higher than fixed support and is connected with driving device, the valve core is driven to move up and down by valve rod and is opened and closed with straight stroke, and valve seat is combined into arbitrary flow shape.

[0006] As preferred, the face of valve rod upper end and packing gland is welded with bellows, the inner diameter of packing gland is sealingly matched with bellows, and the lower end of valve rod is screwed with valve core.

[0007] As preferred, the O-ring of the large step and small step outer diameter of the connecting pipe is installed in the O-shaped groove, and the small step outer diameter of the connecting pipe is matched with the inner step of the valve seat, the large step outer diameter of the connecting pipe is matched with the inner step of the valve cover, and the large step end face of the connecting pipe is flush with the sealing surface of the valve cover flange.

[0008] As preferred, the valve seat is composed of two symmetrical split valve seats, the O-ring of the step outer diameter of each split valve seat is installed in the O-shaped groove, and the step outer diameter of the split valve seat is matched with the inner step of the middle body, and the sealing surface of the split valve seat is matched with the sealing surface of the valve core.

[0009] As preferred, the valve cover and the valve seat are provided with concentric bolt holes, and the spring is arranged between the rear steps of the valve cover and the valve seat, and the bolt in the bolt hole penetrates the spring and is connected with the valve seat.

[0010] As preferred, the inner diameters of the packing, the packing pressing sleeve and the pressing plate are matched with the outer diameter of the valve rod.

[0011] As preferred, the medium flow passage formed by the combination of the valve core and the valve seat is in the shape of a straight line, O, fan or T.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The utility model will not accumulate materials, and adopts a straight stroke opening and closing structure, the valve seat and the valve core adopt different shaped passages for flow control, such as a straight line, O, fan, T and the like, and the flow shape of the valve seat and the valve core can be flexibly changed according to different shapes of working conditions.

[0014] 2. The valve core and the valve seat of the utility model adopt partial displacement to realize the opening and closing and adjustment of the valve, effectively control the opening and closing stroke of the valve, and reduce the design appearance of the valve.

[0015] 3. The structure design of the utility model is a full ceramic lining structure, the ceramic lining in the valve cavity has double layer sealing insurance, and the whole passage is lined with ceramic, which can effectively prevent the wear and corrosion of the medium to the valve body and improve the service life of the valve core.

[0016] 4. The valve rod of the utility model is designed with double layer sealing of corrugated pipe and packing box, which can realize 0 leakage and maintenance free. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic view of a preferred mode of the utility model. DETAILED DESCRIPTION

[0018] The utility model will be described in detail below, and the schematic embodiments and the description of the utility model are used to explain the utility model, but not as a limitation on the utility model. Figure 1 ​

[0019] A full-lining ceramic slide valve, comprising a valve body 1, a valve seat 2, a valve core 3, a valve rod 4 and a fixed support, the fixed support is arranged at the top end of the valve body, both ends of the valve body are provided with valve covers 5 and the valve cover and the valve body are locked by bolt device, the valve cover and the valve seat are provided with concentric bolt holes, and a spring 14 is arranged between the valve cover and the valve seat rear step, the bolt in the bolt hole penetrates the spring and is connected with the valve seat, the upper end of the valve body is provided with a stuffing box 6 and the stuffing box is sleeved around the valve rod, 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, the inner diameters of the packing, the packing pressing sleeve and the pressing plate are matched with the outer diameter of the valve rod, the valve core is arranged in the center of the valve body and is attached to the arc surface of the valve seat, the valve core is vertically arranged with the valve rod, the valve seat is provided with a middle body 10 between the upper and lower ends and the inner wall of the valve body, the outer diameter of each middle body is concentrically matched with the inner diameter of the valve body, the valve seat is provided with a pipe connector 11 at both left and right ends, the outer diameter of each pipe connector is attached to the inner wall of the valve cover, the valve core, the valve seat, the middle body and the pipe connector are all made of ceramic material, one end of the valve rod penetrates the middle body, the valve seat and the valve core from top to bottom and is connected with the valve core, the other end of the valve rod is higher than the fixed support and is connected with a driving device, the surface of the upper end of the valve rod connected with the stuffing box is welded with a corrugated pipe 12, the inner diameter of the stuffing box is sealingly matched with the corrugated pipe, the lower end of the valve rod is threadedly connected with the valve core, the valve core is driven by the valve rod to move up and down for straight stroke opening and closing, and is combined with the valve seat to form an arbitrary flow shape, and specifically, the flow shape can be set as a character type, an O type, a fan type or a T type and the like.

[0020] Specifically, the valve seat is composed of two symmetrical split valve seats, the O-shaped ring with the outer diameter of the step of each split valve seat is installed in the O-shaped groove, and the outer diameter of the split valve seat step is matched with the inner step of the middle body, and the sealing surface of the split valve seat is attached to the sealing surface of the valve core; the O-shaped ring 13 with the outer diameter of the large step and the small step of the pipe connector is installed in the O-shaped groove, and the outer diameter of the small step of the pipe connector is matched with the inner step of the valve seat, and the outer diameter of the large step of the pipe connector is matched with the inner step of the valve cover, and the end surface of the large step of the pipe connector is flush with the sealing surface of the valve cover flange.

[0021] In the implementation process, the following steps are used for installation:

[0022] S1, the outer diameter of the middle body is concentrically matched with the inner diameter of the valve body, and the valve rod hole of the middle body is concentrically fixed to the valve body, and then the sealing rings at both ends are installed on the valve body step;

[0023] S2, the valve rod with the corrugated pipe is connected with the valve core threaded hole through the valve body valve rod hole and the stuffing box;

[0024] S3, install the corrugated pipe sealing ring, the stuffing box and the valve body sealing ring, fix the stuffing box on the valve body, and lock the bolt to ensure complete sealing;

[0025] S4, install the packing, packing sleeve, and the inner diameter of the packing, packing sleeve, and pressing plate is matched with the outer diameter of the valve stem, and the pressing plate bolt is locked;

[0026] S5, install two split valve seats, install O-rings with the outer diameter of the two split valve seat steps in the O-shaped groove, match with the inner step of the middle body, and the split valve seat sealing surface is in close contact with the valve core sealing surface;

[0027] S6, install the valve cover on both sides, place the spring in the spring hole of the valve cover, the valve cover bolt hole is concentric with the valve body bolt hole, insert the bolt, the spring is pressed against the rear step of the valve seat, and the valve core is always kept in close contact;

[0028] S7, install the connecting pipe on both sides, install O-rings with the outer diameter of the large step and small step of the connecting pipe in the O-shaped groove, match the small step outer diameter of the connecting pipe with the inner step of the valve seat, match the large step outer diameter of the connecting pipe with the inner step of the valve cover, and the large step end face of the connecting pipe is flush with the sealing surface of the valve cover flange;

[0029] S8, install the fixed support, connect the driving device, adjust the pressing plate bolt, and tightly press the packing seal double insurance, and the tightness should ensure that the valve stem and the torque of the execution gas are coordinated.

[0030] In the working process, the valve core is driven by the valve stem to move up and down to cut off, distribute and change the flow direction of the medium, and the straight stroke opening and closing structure greatly shortens the stroke, which is about 1 / 3 of the existing technology. In actual application process, the valve core and the valve body can be combined into any flow shape, such as a straight type, O type, fan type or T type, etc., which meets the user's demand for different flow of medium, and because the whole channel is made of ceramic material, the device is not easy to be corroded by the medium. At the same time, the sealing effect between the connection of each structure is good, which greatly improves the service life and use effect.

[0031] The above describes the technical solutions provided by the embodiments of the present application in detail. In this paper, specific examples are applied to describe the principles and implementation modes of the embodiments of the present application. The above description of the embodiments is only applicable to help understand the principles of the embodiments of the present application; at the same time, for the general technical personnel in the art, according to the embodiments of the present application, the specific implementation mode and application range will be changed, and the above description should not be understood as a limitation of the present application.

Claims

1. A full-lined ceramic slide gate valve characterized by: It includes valve body (1), valve seat (2), valve core (3), valve stem (4) and fixed support, the fixed support is equipped on the valve body top end, both ends of the valve body are equipped with valve cover (5) and the valve cover is locked with the valve body through bolt device, the valve body upper end is equipped with stuffing box (6) and the stuffing box is sleeved around the valve stem, the stuffing box is equipped with packing (7) and packing sleeve (8) from bottom to top, the stuffing box top is equipped with pressing plate (9), the pressing plate bottom end surface is tangent with the packing sleeve top end surface, and the pressing plate and the packing sleeve are locked and adjusted through matching pressing plate bolt, pressing plate nut, the valve core is equipped in the valve body center and is attached with the valve seat plane, the valve core and the valve stem are vertically arranged, the valve seat upper and lower ends are both equipped with medium body (10), the outer diameter of each medium body is concentrically matched with the valve body inner diameter, the valve seat left and right ends are both equipped with connecting pipe (11), the outer diameter of each connecting pipe is attached with the valve cover inner wall, the valve core, valve seat, medium body and connecting pipe are all made of ceramic material, one end of the valve stem penetrates the medium body, valve seat, valve core from top to bottom and is connected with the valve core, the other end of the valve stem is higher than the fixed support and is connected with the driving device, the valve core is driven by the valve stem to move up and down for straight stroke opening and closing, and is combined with the valve seat into any flow shape.

2. The full-lined ceramic slide valve according to claim 1, wherein: The surface of the valve stem upper end connected with the stuffing box is welded with corrugated pipe (12), the inner diameter of the stuffing box is sealingly matched with the corrugated pipe, and the lower end of the valve stem is connected with the valve core thread.

3. The full-lined ceramic slide valve according to claim 1, wherein: The O-shaped ring (13) with large and small steps outer diameter of the connecting pipe is installed in the O-shaped groove, the small step outer diameter of the connecting pipe is matched with the inner step of the valve seat, the large step outer diameter of the connecting pipe is matched with the inner step of the valve cover, and the large step end face of the connecting pipe is flush with the sealing surface of the valve cover flange.

4. The full-lined ceramic slide valve according to claim 1, wherein: The valve seat is composed of two symmetrical split valve seats, the O-shaped ring with step outer diameter of each split valve seat is installed in the O-shaped groove, and the step outer diameter of the split valve seat is matched with the inner step of the medium body, and the sealing surface of the split valve seat is attached with the sealing surface of the valve core.

5. The full-lined ceramic slide valve according to claim 1, wherein: The valve cover and the valve seat are provided with concentric bolt holes, and the spring (14) is arranged between the rear steps of the valve cover and the valve seat, and the bolt in the bolt hole penetrates the spring and is connected with the valve seat.

6. The full-lined ceramic slide valve according to claim 1, wherein: The inner diameters of the packing, packing sleeve and pressing plate are matched with the outer diameter of the valve stem.

7. The full-lined ceramic slide valve according to claim 1, wherein: The medium flow passage shape combined by the valve core and the valve seat is a straight line type, O type, fan type or T type.

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