High-temperature wear-resistant disc valve

Abstract

The utility model discloses a high-temperature wear-resisting disc valve in the technical field of valves, which comprises a valve body, a valve rod assembly and a track, the valve rod assembly comprises a rotating arm arranged outside the valve body and a valve rod connected with the rotating arm, a disc assembly is arranged inside the valve body, the tail end of the valve rod is provided with a disc assembly extending into a blocking valve cavity in the valve body, and the track is arranged on the track. A valve seat assembly is arranged on the periphery of the disc assembly, the valve seat assembly is embedded into the valve body, the valve seat assembly and the rail are located on the same plane and move along the rail, the rail is made of integrally sintered hard alloy, screws, screw mounting holes and annular grooves are arranged on the outer wall of the rail, and the rail and the valve body are fixed through the screws. The sealing surface and the track of the disc valve are all made of integrally sintered hard alloy, the disc valve is high-temperature-resistant, good in wear resistance and long in service life, if the sealing surface of the valve seat or the sealing gasket and the track are damaged, the valve seat assembly or the sealing gasket and the track can be maintained and replaced simply and conveniently only by detaching the inner hexagon screws.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely is a kind of high-temperature wear-resistant disc valve. BACKGROUND

[0002] Disc valve is a kind of valve by disc sliding to realize quick switch, with good sealing performance, high temperature resistance, wear resistance, erosion resistance and other characteristics, widely used in coal chemical industry, polysilicon, organic silicon, oil field, refining and other industries' lock hopper, silo, reaction kettle, separator, pneumatic conveying, pump isolation and the conveying of various solids, gas-solid, liquid-solid material.Disc valve has self-rotating structure wear-resistant disc, the rotation of wear-resistant disc in medium will clean and polish metal seal continuously, this unique self-polishing metal seal design makes valve repeatedly tightly closed under harsh conditions, sealing surface is more and more smooth, continuously reaches ANSI B16.104 VI level sealing requirement in use.To realize the above-mentioned unique design function, valve seat sealing ring and the track surface of valve body reliably are the main difficult problems of disc valve.Wear-resistant disc in long-term switching process, due to the hardness of valve body material, in the reciprocating action process of wear-resistant disc, it will pull the valve body, cause valve jam, even unable to switch.On the track area hardening treatment, if the hardness is lower than the hardness of valve seat sealing ring, it cannot achieve wear-resistant effect, if the track surface after hardening and valve seat sealing ring are same, hardness is extremely high, processing is very difficult, it is difficult to guarantee the flatness of entire plane.

[0003] Currently, the surface hardening of disc valve seat mainly adopts two ways, one is surface supersonic spraying, and the hardness and thickness are difficult to meet the wear-resistant requirements;the other is integral sintering valve seat, the integral sintering valve seat and valve body are bonded with glue, which can meet the wear-resistant requirements but is not suitable for high-temperature working conditions.

[0004] Disc slides back and forth quickly in the switching process of disc valve, and the track without hardening is prone to valve body damage and valve damage failure in actual use, and if the hardness of track is not high, the wear-resistant effect cannot be achieved, and if the hardness is too high, it is difficult to process, it is difficult to guarantee the flatness of entire plane, and the cost is high. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a high-temperature wear-resistant disc valve to solve the problems in the above background technology.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a high temperature wear -resisting disc blade valve, including valve body, valve stem subassembly and track, the valve stem subassembly includes the rotary arm of being equipped with in the valve body outside and the valve stem being connected with the rotary arm, the inside of valve body is provided with disc piece subassembly, the end of valve stem is equipped with disc piece subassembly extending to the barrier valve cavity in the valve body, the periphery of disc piece subassembly is equipped with valve seat subassembly, the valve seat subassembly is embedded in the valve body, the valve seat subassembly is in the same plane with track and moves along it, the track is integral sintered hard alloy, and the outer wall is provided with screw, screw mounting hole and annular groove, the track is fixed with the valve body through screw, the hardness of track and valve seat wear -resistant sealing ring sealing surface are same.

[0007] As the further scheme of the utility model: the bottom of disc piece subassembly is provided with disc base, the top of disc base is fixedly connected with wear -resisting disc.

[0008] As the further scheme of the utility model: the rotary arm drive valve stem subassembly reciprocating motion, the valve stem makes disc piece subassembly do reciprocating motion along track through central axis swing.

[0009] As the further scheme of the utility model: the annular groove is placed with sealing gasket, the convex annular surface of valve seat subassembly presses sealing gasket.

[0010] As the further scheme of the utility model: the bottom of valve seat subassembly is fixedly connected with valve seat base, the top end lateral wall of valve stem is fixedly connected with rocker arm with penetrating.

[0011] As the further scheme of the utility model: the bottom of valve seat subassembly is penetrated and is connected with multiple internal hexagon screws with thread, the valve seat subassembly is detachably connected with valve body through internal hexagon screw.

[0012] Compared with the prior art, the utility model has the advantages that: the utility model discloses a high temperature wear -resisting disc blade valve, the sealing surface and track of the disc blade valve all adopt integral sintered hard alloy, are resistant to high temperature, good wear resistance, long service life, if the valve seat sealing surface or sealing gasket and track are damaged, only need to remove internal hexagon screw, can maintain and replace valve seat subassembly or sealing gasket and track, simple and convenient. Rotary arm drive valve stem subassembly reciprocating motion, the valve stem makes disc piece do reciprocating motion along track through central axis swing, track and valve seat convex annular surface adopt diamond grinding wheel and carry out high-precision grinding, guarantee that track and valve seat are coplanar, and the problem that the wear between disc piece and valve seat and track is intensified because of height difference does not appear;Track protects valve body and is not easy to deform, track processing is convenient, saves the cost;Because the wear resistance of hard alloy track is good, the jamming phenomenon and switch difficult problem of valve are avoided, and the inner component of valve is protected;Integral structure greatly optimizes the operation time of system. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a front view structural schematic diagram of a high-temperature wear-resistant disc valve of the utility model;

[0014] Fig. 2 It is a sectional view structural schematic diagram of a high-temperature wear-resistant disc valve of the utility model

[0015] Fig. 3 It is a structure schematic diagram of a disc and a valve seat in a high-temperature wear-resistant disc valve of the utility model;

[0016] Fig. 4 It is a structure schematic diagram of a disc and a track in a high-temperature wear-resistant disc valve of the utility model;

[0017] Fig. 5 It is another view structure schematic diagram of a disc and a track in a high-temperature wear-resistant disc valve of the utility model.

[0018] In the figure: 1, valve body; 2, disc assembly; 3, valve seat assembly; 4, valve stem; 5, rotating arm; 6, rocker; 7, valve seat base; 8, disc base; 9, wear-resistant disc; 10, valve seat wear-resistant sealing ring; 11, sealing gasket; 12, screw; 13, track; 14, screw. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0020] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally a category and do not limit the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship.

[0021] In the description of the present application, it needs to be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0022] In the description of the present application, it needs to be understood that the terms "installation", "connection", "arrangement" should be understood broadly, for example, it can be fixedly connected, arranged, or detachably connected, arranged, or integrally connected, arranged. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0023] Currently, the surface hardening of the disc valve seat mainly adopts two ways, one is surface supersonic spraying, the hardness and thickness are difficult to meet the wear-resistant requirements; the other is integral sintering valve seat, the traditional integral sintering valve seat is glued with the valve body, which can meet the wear-resistant requirements but is not suitable for high-temperature working conditions.

[0024] The fixing mode of the traditional integral sintering valve seat and the valve body mainly has two kinds, one is adhesion, mainly composed of the valve body, the integral sintering valve seat and the sealing glue. The sealing glue is uniformly applied at the joint part of the valve body and the integral sintering valve seat, and the gap at the joint part of the valve body and the integral sintering valve seat is tightly filled after the sealing glue is solidified. The traditional disc valve adhesion integral sintering valve seat structure has two problems. The first problem is that the sealing agent is easy to soften under high temperature, the bonding strength is greatly reduced, and it cannot be used in high-temperature environment. The second problem is that the valve body and the integral sintering valve seat are bonded into an integral body and cannot be disassembled, which causes great difficulty in maintenance and replacement if the integral sintering valve seat is damaged.

[0025] The other is brazing, mainly composed of the valve body, the integral sintering valve seat and the copper-based filler welding. The traditional disc valve brazing integral sintering valve seat structure also has two problems. The first problem is that the valve body and the integral sintering valve seat are easy to produce brazing cracks after brazing. The second problem is that the valve body and the integral sintering valve seat are welded into an integral body by the copper-based filler welding seam, and cannot be disassembled, which causes great difficulty in maintenance and replacement if the integral sintering valve seat is damaged.

[0026] During the opening and closing process of the disc valve, the disc slides back and forth quickly, and the track without hardening is easy to cause valve body damage and valve damage failure in actual use. If the hardness of the track is not high, the wear-resistant effect cannot be achieved, and if the hardness is too high, it is difficult to process, it is difficult to guarantee the flatness of the whole plane, and the cost is high

[0027] Please refer toFigs. 1-5 The utility model provides a kind of high-temperature wear-resistant disc valve, valve seat assembly 3 is brazed by integral sintered hard valve seat wear-resistant sealing ring 10 and valve seat pedestal 7, the outer periphery of this valve seat assembly 3 is uniformly distributed inner screw mounting hole, and protruding annular surface is equipped in the inner side of inner screw mounting hole;Valve body 1 and the position corresponding to valve seat assembly 3 are equipped with screw mounting hole and annular groove, and valve body 1 is fixed with valve seat assembly 3 by hexagon socket head cap screw 12, annular groove is placed sealing gasket 11, and protruding annular surface of valve seat assembly 3 presses sealing gasket 11.

[0028] The sealing surface and protruding annular surface of valve seat assembly 3 are ground with high precision by diamond grinding wheel, to ensure sealing performance. The installation steps of valve seat assembly 3 are as follows: sealing gasket 11 is loaded into the annular groove of valve body 1, then valve seat assembly 3 is loaded, protruding annular surface is used to axially compress sealing gasket 11, and hexagon socket head cap screw 12 is used to fix valve seat assembly 3 on valve body 1. It can avoid that medium rushes into the inner cavity of annular groove, protect sealing gasket 11, and also can prevent excessive compression of sealing gasket in axial direction. If valve seat assembly 3 or sealing gasket 11 is damaged, only need to remove hexagon socket head cap screw 12, valve seat assembly 3 or sealing gasket 11 can be repaired and replaced. The inner hexagonal screw mounting hole of valve seat assembly 3 and hexagon socket head cap screw 12 belong to matching gap, which can realize radial compensation function and will not cause damage to parts. Valve seat assembly 3 and sealing gasket 11 belong to elastic fit, which can realize axial compensation function and will not cause damage to parts.

[0029] The embodiment is a disc valve track structure, which comprises a valve body 1, a valve rod assembly and a track 13. The valve rod assembly comprises a rotating arm 5 arranged outside the valve body 1, a valve rod 4 connected with the rotating arm 5, and a disc assembly 2 arranged at the end of the valve rod 4 and extending into the valve cavity of the valve body 1. The outer periphery of the disc assembly 2 is provided with a valve seat assembly 3, the valve seat assembly 3 is embedded in the valve body 1, and the valve seat assembly 3 is in the same plane as the track 13 and moves along the track 13. The track 13 is made of integral sintered hard alloy and is provided with a screw 14 mounting hole, and the track 13 is fixed with the valve body 1 by the screw 14. If the track 13 is damaged, only need to remove the hexagon socket head cap screw 14, the track 13 can be repaired and replaced. The hardness of the track 13 is the same as that of the sealing surface of the valve seat wear-resistant sealing ring 10, which can effectively protect the valve body 1 from being damaged.

[0030] When the embodiment is applied, the rotating arm 5 drives the valve rod assembly to reciprocate, the valve rod 4 swings through the central shaft to make the disc assembly 2 reciprocate along the track 13, and since the track 13 and the valve seat assembly 3 are coplanar, the problem of intensified wear between the disc assembly 2, the valve seat assembly 3 and the track 13 due to the height difference does not occur; the branched structure of the track 13 protects the valve body 1 from being easily deformed, facilitates the processing of the track 13 and saves the cost; since the hard alloy track 13 has good wear resistance, the jamming phenomenon of the valve and the difficult opening and closing problem are avoided, and the inner components of the valve are protected; and the overall structure greatly optimizes the operation time of the system.

[0031] The disc valve has the advantages of good wear resistance and long service life, and if the valve seat sealing surface or the sealing gasket and the track 13 are damaged, only the internal hexagonal screw 12 needs to be disassembled, and the valve seat assembly 3 or the sealing gasket and the track 13 can be repaired and replaced, which is simple and convenient.

[0032] The valve seat assembly 3 is formed by brazing the integral sintered hard alloy sealing ring and the base, uniformly distributed inner screw mounting holes are arranged on the outer periphery of the valve seat assembly 3, a protruding annular surface is arranged on the inner side of the inner screw mounting hole, screw mounting holes and an annular groove are arranged at the positions corresponding to the valve seat assembly 3 of the valve body 1, the valve body 1 and the valve seat assembly 3 are fixed through the screw 14, the sealing gasket is placed in the annular groove, and the protruding annular surface of the valve seat assembly 3 presses the sealing gasket; if the valve seat sealing surface or the sealing gasket is damaged, only the internal hexagonal screw 12 needs to be disassembled, and the integral sintered valve seat or the sealing gasket can be repaired and replaced;

[0033] The track 13 is an integral sintered hard alloy and is provided with a screw mounting hole, and the track 13 and the valve body 1 are fixed through the screw 14; if the track 13 is damaged, only the screw 14 needs to be disassembled, and the track 13 can be repaired and replaced; the hardness of the track 13 is the same as that of the valve seat sealing surface, and the valve body 1 can be effectively protected from being damaged.

[0034] Specifically, the lower track 13 is equal in width to the upper track 13.

[0035] Compared with the prior art, the excellent effects of the disc valve track structure of the utility model mainly lie in that the rotating arm 5 drives the valve rod assembly to reciprocate, the valve rod 4 swings through the central shaft to make the disc along the track 13 reciprocate, the track 13 and the valve seat protruding annular surface are ground with high precision by using a diamond grinding wheel, the coplanarity of the track 13 and the valve seat is ensured, and the problem of intensified wear between the disc and the valve seat and the track 13 due to the height difference does not occur; the track 13 protects the valve body 1 from being easily deformed, the track 13 is convenient to process and saves the cost; since the hard alloy track 13 has good wear resistance, the jamming phenomenon of the valve and the difficult opening and closing problem are avoided, and the inner components of the valve are protected; and the overall structure greatly optimizes the operation time of the system.

[0036] It has to be noted that, as used herein, the terms "includes" and / or "contains", or any other tautological variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements is not limited to those elements, but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises a" does not, without more constraints, preclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element. Also, it has to be noted that the scope of the methods and apparatus of the present embodiments are not limited by the order of the steps or processes for carrying out the methods or by the order of the order of the components of the apparatus, but can include performing the steps or processes in different order, or concurrently, and the methods described can be performed in other than the described order. In addition, features described in relation to one example can be combined in other examples.

[0037] The embodiments of the present application described above are merely illustrative and are not intended to limit the present application to the specific embodiments described. The specific embodiments described above are illustrative of specific forms to implement the present application and many embodiments of the present application can be made without departing from the spirit and scope of the present application.

Claims

1. A high temperature wear resistant disc valve comprising a valve body (1), a stem assembly and a track (13), characterised in that: The valve stem assembly comprises a rotating arm (5) arranged outside the valve body (1) and a valve stem (4) connected with the rotating arm (5), the inside of the valve body (1) is provided with a disc assembly (2), the end of the valve stem (4) is provided with the disc assembly (2) extending into the valve cavity of the valve body (1), the outer periphery of the disc assembly (2) is provided with a valve seat assembly (3), the valve seat assembly (3) is embedded in the valve body (1), the valve seat assembly (3) is in the same plane with the track (13) and moves along the track (13), the track (13) is an integral sintered hard alloy, and the outer wall is provided with a screw (14), a screw mounting hole and an annular groove, the track (13) is fixed with the valve body (1) through the screw (14), and the hardness of the track (13) is the same as that of the sealing surface of the valve seat wear-resistant sealing ring (10).

2. A high temperature wear resistant disc valve according to claim 1, characterized in that: The bottom of the disc assembly (2) is provided with a disc base (8), and the top of the disc base (8) is fixedly connected with a wear-resistant disc (9).

3. A high temperature wear resistant disc valve according to claim 1, characterized in that: The rotating arm (5) drives the reciprocating motion of the valve stem assembly, the valve stem (4) swings through the center shaft to make the disc assembly (2) reciprocate along the track (13).

4. A high temperature wear resistant disc valve according to claim 1, characterized in that: The annular groove is placed with a sealing gasket (11), and the convex annular surface of the valve seat assembly (3) presses the sealing gasket (11).

5. A high temperature wear resistant disc valve according to claim 1, characterized in that: The bottom of the valve seat assembly (3) is fixedly connected with a valve seat base (7), and the top end side wall of the valve stem (4) is fixedly connected with a rocker (6) penetratingly.

6. A high temperature wear resistant disc valve according to claim 1, characterized in that: The bottom of the valve seat assembly (3) is penetratingly and threadedly connected with a plurality of internal hexagonal screws (12), and the valve seat assembly (3) is detachably connected with the valve body (1) through the internal hexagonal screws (12).

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