CN217653267U - Wear-resisting valve capable of being adjusted on line - Google Patents

Abstract

The utility model discloses a wear-resistant valve capable of being adjusted on line, which comprises an on-line adjusting rod, a valve body, a valve seat component, a valve cover and a flashboard; the valve seat assembly comprises a valve seat and is arranged at the top end and the bottom end of the valve cavity of the valve body; and the online adjusting rod is connected with the valve body through threads, wherein one end of the online adjusting rod is arranged in the valve body and is abutted against a valve seat arranged at the bottom of the valve cavity. The utility model discloses can make online adjusting rod carry out axial motion, the recess of the terminal surface portion butt disk seat of online adjusting rod inner when making online adjusting rod carry out axial motion for the disk seat is closer to the flashboard, has realized the compensation to the front cover wearing and tearing volume, and when online adjusting rod adjusts the disk seat and keeps away from the flashboard, has realized the demand that thermal energy needs great clearance under the high temperature, has improved the wear-resisting degree of disk seat, has also realized online adjustment; the wear resistance is good, and the service life can be prolonged; through the online adjustment function, the medium is isolated from the valve cavity, so that the medium cannot enter the valve cavity.

Description

Wear-resisting valve capable of being adjusted on line

Technical Field

The utility model relates to a wear-resisting valve, in particular to wear-resisting valve that can adjust on line belongs to wear-resisting valve technical field.

Background

Valves are plumbing accessories used to open and close a pipe, control flow direction, regulate and control parameters of the transport medium (temperature, pressure and flow). According to their function, they can be classified into shut-off valves, check valves, regulating valves, and the like. The valve is a control part in a fluid conveying system and has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like. Valves used in fluid control systems range in variety and size from the simplest shut-off valves to the variety of valves used in extremely complex autonomous systems. The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The valves are further classified into cast iron valves, cast steel valves, stainless steel valves (201, 304, 316, etc.), chromium molybdenum steel valves, chromium molybdenum vanadium steel valves, dual-phase steel valves, plastic valves, nonstandard valves, etc. according to the material.

In devices of petrochemical industry, coal chemical industry, polycrystalline silicon, power plants, metallurgy and the like, gas-solid, liquid-solid or gas-liquid-solid and other media are often required to be conveyed, and high requirements are provided for the wear resistance of the valve. If the dirty medium is conveyed, the medium is required not to enter the valve cavity, otherwise, the medium is accumulated in the valve cavity, the valve is difficult to open and close, or the valve leaks due to the improper opening and closing, and the overall function of the valve fails in serious cases. Due to the limitation of the prior art, the conventional wedge gate valve or flat gate valve is frequently adopted in the device at present, the use effect is not satisfactory, the long-period operation of the device is seriously influenced, and the online adjustment cannot be realized. Therefore, a new valve is urgently needed to meet the requirement of harsh working conditions.

Disclosure of Invention

The utility model discloses the technical problem that will solve lies in: the wear-resistant valve capable of being adjusted on line is provided, and the problem that media are accumulated in a valve cavity is solved.

The utility model discloses the technical problem that will solve takes following technical scheme to realize:

the utility model provides a wear-resistant valve capable of being adjusted on line, which comprises an on-line adjusting rod, a valve body, a valve seat component, a valve cover and a flashboard, wherein,

the valve body is connected with the valve cover, and a gasket is arranged between the valve body and the valve cover;

the valve seat assembly comprises a valve seat, and is arranged at the top end and the bottom end of a valve cavity of the valve body;

the online adjusting rod is connected with the valve body through threads, wherein one end of the online adjusting rod is arranged in the valve body and is abutted against the valve seat arranged at the bottom of the valve cavity;

the flashboard comprises a cut-off flashboard or an adjusting flashboard and is arranged in the valve seat, wherein,

an accommodating cavity corresponding to the flashboard is arranged in the valve seat;

the surface layer in the valve seat is provided with the sclerosis layer, wherein, the sclerosis layer is in for including nickel base alloy, tungsten carbide or chromium carbide spraying or spray-welding valve seat surface forms.

As an optimal technical scheme of the utility model, set up in the valve pocket bottom the disk seat, its height that holds the chamber is less than the height of flashboard.

As a preferred technical proposal of the utility model, a gland and a sealing gasket are sleeved on the on-line adjusting rod, wherein,

the gland and the sealing gasket are arranged between the valve body and the online adjusting rod,

one end of the gland is positioned outside the valve body.

Preferably, the first and second electrodes are formed of a metal,

the cut-off type gate plate comprises a flow guide cavity arranged in the cut-off type gate plate;

the water guide cavity channel of the adjusting type gate plate comprises a first cavity channel and a second cavity channel.

As a preferred technical scheme of the utility model, the valve seat assembly also comprises a pressing ring and a disc spring group;

the valve seat is mounted by a shoulder on the valve body, wherein,

and a first sealing ring, a triangular metal ring, a second sealing ring, a pressing ring, a disc spring group and a dust ring are sequentially arranged between the valve seat and the valve body.

As a preferable technical proposal of the utility model, at least two on-line adjusting rods are arranged, wherein,

the online adjusting rods are oppositely arranged by taking the valve seat as an axis;

the side of the valve seat is provided with a groove, wherein,

the end surface part of the end part of the online adjusting rod is abutted against the groove,

the face portion includes one of a spherical surface or a planar surface.

As a preferable technical proposal of the utility model, the top end of the flashboard is connected with a valve rod, wherein,

the valve rod penetrates through the valve cover and the bracket, and the bracket is connected with the end part of the valve cover;

the valve stem is mounted via an upper seal seat and a packing gland, wherein,

and a packing pad, a packing cavity and a packing pressing sleeve are sequentially arranged between the upper sealing seat and the packing pressing cover, and packing is filled in the packing cavity.

As a preferred technical scheme of the utility model, be provided with the blowdown connecting pipe on the valve body, be provided with on the valve gap and sweep the connecting pipe.

As an optimal technical scheme of the utility model, the valve body with connect through double-screw bolt and nut between the valve gap.

Further preferably, the first channel and the second channel are integrally arranged, and the cross section of the first channel gradually increases or decreases from one end to the other end.

The utility model has the advantages that: the utility model discloses can be through rotatory online adjusting lever, when making online adjusting lever carry out axial motion, the terminal surface portion butt recess of valve seat of online adjusting lever inner, make the valve seat be closer to the flashboard more, realized the compensation to the front cover wearing and tearing volume, when online adjusting lever adjusts the valve seat and keeps away from the flashboard, realized that the thermal energy needs the demand in great clearance under the high temperature, improved the wear-resisting degree of valve seat, also realized online adjustment; the valve body and the valve cover adopt a top-mounted structure, and parts in the valve body can be replaced at the top of the valve body, so that the function of online replacement and maintenance is realized; the surface layer (namely the contact surface of the valve seat and the flashboard) in the valve seat is provided with a hardening layer, so that the wear resistance can be improved, and meanwhile, the contact plane of the valve seat and the flashboard is ground and polished during each opening and closing of the valve, so that the sealing performance of the valve is improved, and the valve seat has a self-cleaning function; the valve seat is arranged at the bottom of the valve cavity, the height of the accommodating cavity of the valve seat is smaller than that of the flashboard, when the flashboard is a cut-off flashboard with a flow guide cavity, the flow guide cavity can capture media and seal the media in the flow guide cavity, and meanwhile, the valve seat can realize the function of sealing the media in the flow guide cavity and prevent the media from entering the valve cavity, so that the situation that the valve is difficult to open and close due to accumulation of the media in the valve cavity or valve leakage is caused due to improper opening and closing, and the overall function of the valve is failed in serious cases is avoided; the wear resistance is good, and the service life can be prolonged; through the online adjustment function, the medium is isolated from the valve cavity, so that the medium cannot enter the valve cavity.

Drawings

FIG. 1 is a schematic view of the present invention;

fig. 2 isbase:Sub>A second schematic structural view (base:Sub>A cross-sectional view alongbase:Sub>A-base:Sub>A in fig. 1) of the present invention;

fig. 3 is a third schematic structural diagram of the present invention;

FIG. 4 is a fourth schematic structural diagram of the present invention;

FIG. 5 is a fifth schematic view of the present invention;

fig. 6 is a partial schematic structural view of the present invention;

fig. 7 is a second partial schematic view of the present invention;

fig. 8 is a third schematic view of a partial structure of the present invention;

FIG. 9 is a fourth schematic view of the partial structure of the present invention;

in the figure: 1. an online adjusting rod; 101. an end surface portion; 2. a gland; 3. a gasket; 4. a valve body; 401. a valve cavity; 41. a sewage draining connecting pipe; 5. a valve seat assembly; 51. a valve seat; 511. a groove; 512. an accommodating chamber; 52. A first seal ring; 53. a triangular metal ring; 54. a second seal ring; 55. pressing a ring; 56. a disc spring set; 57. a dust ring; 6. a cut-off type shutter; 61. an adjustable gate plate; 7. a valve stem; 8. a gasket; 9. a stud; 10. a nut; 11. a valve cover; 111. purging the connecting pipe; 12. an upper seal seat; 13. a filler pad; 14. A packing cavity; 15. pressing and sleeving the filler; 16. a packing gland; 17. and (4) a bracket.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Examples

As shown in fig. 1 to 9, comprising an in-line adjusting rod 1, a valve body 4, a valve seat assembly 5, a valve cover 11 and a shutter, wherein,

the valve body 4 is connected with the valve cover 11, the specific valve body 4 is connected with the valve cover 11 through the stud 9 and the nut 10, the gasket 8 is arranged between the valve body 4 and the valve cover 11, and the medium is prevented from leaking outwards from the joint of the valve body 4 and the valve cover 11;

the valve seat assembly 5 comprises a valve seat 51, is arranged at the top end and the bottom end of the valve cavity 401 of the valve body 4 and is used for clamping the flashboard, the top end of the flashboard is connected with a valve rod 7, and in the embodiment, the bottom end of the valve rod 7 is connected with the top end of the flashboard through a T-shaped groove;

the online adjusting rod 1 is connected with the valve body 4 through threads, the online adjusting rod 1 is sleeved with the gland 2 and the sealing gasket 3, the gland 2 and the sealing gasket 3 are both arranged between the valve body 4 and the online adjusting rod 1, one end of the gland 2 is located outside the valve body 4, namely, the sealing gasket 3 is compressed and fixed through the gland 2, and a medium is prevented from leaking outwards from the connection position of the online adjusting rod 1 and the valve body 4; one end of the online adjusting rod 1 is arranged in the valve body 4 and is abutted with a valve seat 51 arranged at the bottom of the valve cavity 401; at least two online adjusting rods 1 are arranged, wherein the online adjusting rods 1 are oppositely arranged by taking the valve seat 51 as an axis or symmetrically arranged by taking the valve seat 51 as an axis; the side of the valve seat 51 is provided with a groove 511, wherein an end surface portion 101 at the end of the wire adjusting rod 1 abuts against the groove 511, the end surface portion 101 includes one of a spherical surface and a plane surface, in the embodiment, the end surface is preferably spherical, and a gap exists between the spherical end surface and the groove 511 to avoid being locked.

Specifically, the gate plate comprises a cut-off gate plate 6 and is arranged in a valve seat 51, wherein an accommodating cavity 512 corresponding to the gate plate is arranged in the valve seat 51, a hardened layer is arranged on a surface layer in the valve seat 51 (namely the surface layer in contact with the gate plate 51 and the gate plate 6), when the valve seat 51 and the gate plate (such as the cut-off gate plate 6) cannot meet the use requirement due to abrasion of a sealing surface or change of medium temperature of the valve seat 51 and the gate plate (such as the cut-off gate plate 6), the compensation of abrasion loss of the sealing surface can be realized when the valve seat 51 is close to the gate plate (such as the cut-off gate plate 6) through rotating the outermost end part of the online adjusting rod 1 in an axial motion mode and the end surface part 101 at the top end of the online adjusting rod 1 is close to the gate plate (such as the cut-off gate plate 6), the requirement that the thermal expansion needs larger gap at high temperature is realized when the online adjusting is far away from the gate plate (such as the cut-off gate plate 6), the abrasion resistance of the valve seat is improved, and the online adjusting is also realized. In the embodiment of the utility model of another preferred, the surface of disk seat 51 and flashboard 6 all has the sclerosis layer, has super wear-resisting function, can effectually resist the erosion of medium, guarantees long-term sealing performance, because disk seat 5a and cut type flashboard 6 in close contact with all the time, the valve all is to disk seat 51 and the whole contact plane's of cutting type flashboard grinding and polishing at every turn the switch, has improved the sealing performance of valve. Meanwhile, when the valve is opened and closed every time, the valve seat 51 and the ultra-tight seal of the cut-off type flashboard 6 can wipe the medium remained on the sealing surface of the cut-off type flashboard 6 completely, so that the valve seat 51 has a self-cleaning function, and further risks such as blockage caused by medium residue are avoided. In the embodiment, the hardened layer is made of a hard alloy material including nickel-based alloy, tungsten carbide or chromium carbide, and the hard alloy material is sprayed or spray-welded on the surface of the valve seat 51 to form the hardened layer, so that the effects of grinding and polishing the whole contact plane of the valve seat 51 and the cut-off type flashboard 6 and improving the sealing performance are realized when the valve is opened and closed each time; in another preferred embodiment of the present invention, the surface layer inside the valve seat 51 (i.e. the surface layer where the valve seat 51 contacts the shutter 6) and the surface layer where the shutter 6 contacts the valve seat 51 are both provided with a hardened layer, thereby further improving the grinding and polishing effects.

The cut-off type gate plate 6 comprises a diversion cavity 601 arranged in the cut-off type gate plate to form a parallel single gate plate structure, and when the valve is completely closed, the full-flow medium is conveyed. The valve seat 51 adopts a lower guide type extension structure and is provided with an accommodating cavity 512, the valve seat 51 arranged at the bottom of the valve cavity 401 and the height of the accommodating cavity 512 is smaller than that of the gate plate, the valve seat 51 is always in close contact with the cut-off type gate plate 6 when the valve is fully opened, fully closed and in the middle position, the lower guide hole (namely the guide cavity 601) of the cut-off type gate plate 6 can capture a medium and is sealed in the space in close contact with the cut-off type gate plate 6 and the valve seat 51, and the medium cannot enter the valve cavity. The medium enclosed in the space where the cut-off type shutter 6 and the valve seat 51 are in close contact flows downstream by the pipe medium pressure when the valve is fully opened. The unique antifouling property of the valve ensures that the medium in the flow channel is completely isolated from the valve cavity, and the medium cannot enter or accumulate in the valve cavity, so that the valve is particularly suitable for conveying the dirty medium, and avoids the problems of blockage and the like;

in another preferred embodiment of the present invention, the gate plate selects the adjustable gate plate 61, the flow guiding channel of the adjustable gate plate 61 includes a first channel 611 and a second channel 612, the first channel 611 and the second channel are integrally disposed, the cross section of the first channel 611 gradually increases or decreases from one end to the other end, for example, the first channel 611 is inverted V-shaped, the second channel 612 is semi-circular, the flow and pressure of the channel medium can be adjusted, and the shape of the first channel 611 and the shape of the second channel 612 can also be set as required.

The valve seat assembly 5 further comprises a pressing ring 55 and a disc spring group 56, specifically, the valve seat 51 is installed or limited through a shoulder on the valve body 4, wherein a first sealing ring 52, a triangular metal ring 53, a second sealing ring 54, the pressing ring 55, the disc spring group 56 and a dust ring 57 are sequentially installed between the valve seat 51 and the valve body 4, the disc spring group 56 is in contact with the pressing ring 55, and continuous pretightening force is provided for the valve seat 51 in pressure and temperature alternation to form a live-load valve seat structure. The first sealing ring 52, the triangular metal ring 53 and the second sealing ring 54 realize the radial sealing of the valve seat 51 and the valve body, wherein the dust ring 57 can prevent media from entering the disc spring assembly 56 and affecting the performance of the disc spring assembly 56.

The valve rod 7 penetrates through the valve cover 11 and the support 17, the support 17 is connected with the end portion of the valve cover 11, the valve rod 7 is installed through the upper sealing seat 12 and the packing gland 16, the packing pad 13, the packing cavity 14 and the packing gland sleeve 15 are sequentially arranged between the upper sealing seat 12 and the packing gland 16, packing is filled in the packing cavity 14, and particularly, the upper sealing seat 12 is fixed on the valve cover 11 through threads and used for limiting and realizing an upper sealing function when the valve rod 7 moves upwards to a full-opening position. The packing pad 13 is positioned above the upper sealing seat 12, and the packing 14 is prevented from being extruded downwards to influence the sealing performance when the valve rod 7 moves up and down. The packing 14 is arranged above the packing pad 13, and the sealing of the valve rod 7 is realized under the axial compression of the packing pressing sleeve 15 and the packing pressing cover 16. The top of the packing gland 15 is fixed by a packing gland 16. The bottom of the bracket 17 is fixedly connected with the valve cover 11, and the top is connected with the operating mechanism.

The valve body 4 is provided with a pollution discharge connecting pipe 41 at the upper part (bottom part) and a sweeping connecting pipe 111 at the upper part (outer side) of the valve cover 11, so that the valve cavity 401 can be periodically swept or cleaned, and the cleanness of the valve cavity 401 is kept.

The utility model discloses can be through rotatory online adjusting rod, when making online adjusting rod carry out axial motion, the terminal surface portion butt of online adjusting rod inner is the recess of disk seat, makes the disk seat be closer to the flashboard more, has realized the compensation to the front cover wearing and tearing volume, when online adjusting rod adjusts the disk seat and keeps away from the flashboard, has realized the demand that thermal energy needs great clearance under the high temperature, has improved the wear resistance of disk seat, has also realized online adjustment; the valve body and the valve cover adopt a top-mounted structure, and parts in the valve body can be replaced at the top of the valve body, so that the function of online replacement and maintenance is realized; the surface layer (namely the contact surface of the valve seat and the flashboard) in the valve seat is provided with a hardening layer, so that the wear resistance can be improved, and meanwhile, the contact plane of the valve seat and the flashboard is ground and polished during each opening and closing of the valve, so that the sealing performance of the valve is improved, and the valve seat has a self-cleaning function; set up in the disk seat of valve pocket bottom, its height that holds the chamber is less than the height of flashboard, when the flashboard chooseed for use and has the type flashboard that blocks of water conservancy diversion chamber, the water conservancy diversion chamber can catch the medium and seal the medium in the water conservancy diversion intracavity, and the disk seat can realize the effect of sealing the medium in the water conservancy diversion intracavity simultaneously, prevents that it from getting into the valve intracavity, has avoided piling up at the valve pocket because of the medium, causes the valve switch difficulty or because of the switch does not target in place arouses the valve to leak, causes the condition of valve whole function failure when serious. The wear resistance is good, and the service life can be prolonged; through the online adjustment function, the medium is isolated from the valve cavity, so that the medium cannot enter the valve cavity.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are intended to be included within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. The wear-resistant valve capable of being adjusted on line is characterized by comprising an on-line adjusting rod (1), a valve body (4), a valve seat assembly (5), a valve cover (11) and a flashboard, wherein,

the valve body (4) is connected with the valve cover (11), and a gasket (8) is arranged between the valve body and the valve cover (11);

the valve seat assembly (5) comprises a valve seat (51) which is arranged at the top end and the bottom end of a valve cavity (401) of the valve body (4);

the online adjusting rod (1) is connected with the valve body (4) through threads, wherein one end of the online adjusting rod (1) is installed in the valve body (4) and is abutted to the valve seat (51) arranged at the bottom of the valve cavity (401);

the shutter, including a shut-off shutter (6) or a regulating shutter (61), is arranged in the valve seat (51), wherein,

an accommodating cavity (512) corresponding to the flashboard is arranged in the valve seat (51);

the surface layer in the valve seat (51) is provided with the sclerosis layer, wherein, the sclerosis layer is in for including nickel base alloy, tungsten carbide or chromium carbide spraying or spray-welding valve seat (51) surface forming.

2. An in-line adjustable wear-resistant valve according to claim 1, wherein the height of the valve seat (51) arranged at the bottom of the valve chamber (401) and the height of the accommodating chamber (512) are smaller than the height of the shutter.

3. An on-line adjustable wear-resistant valve according to claim 1, characterized in that a gland (2) and a gasket (3) are sleeved on the on-line adjusting rod (1), wherein,

the gland (2) and the sealing gasket (3) are both arranged between the valve body (4) and the online adjusting rod (1),

one end of the gland (2) is positioned outside the valve body (4).

4. An in-line adjustable wear valve in accordance with claim 1,

the cut-off type gate plate (6) comprises a flow guide cavity (601) arranged in the cut-off type gate plate;

the flow guide channel of the adjusting type gate plate (61) comprises a first channel (611) and a second channel (612).

5. An in-line adjustable wear valve in accordance with claim 1 wherein the valve seat assembly (5) further comprises a clamping ring (55) and a disc spring pack (56);

the valve seat (51) is mounted by means of a shoulder on the valve body (4), wherein,

the valve seat (51) and a first sealing ring (52), a triangular metal ring (53) and a second sealing ring (54) are sequentially arranged between the valve body (4), the pressing ring (55), the disc spring set (56) and the dust ring (57).

6. An in-line adjustable wear-resistant valve according to claim 1, characterized in that at least two in-line adjusting rods (1) are provided, wherein,

the online adjusting rod (1) is arranged oppositely by taking the valve seat (51) as an axis;

the side of the valve seat (51) is provided with a groove (511), wherein,

the end surface part (101) of the end part of the online adjusting rod (1) is abutted with the groove (511),

the face portion (101) includes one of a spherical surface or a planar surface.

7. An in-line adjustable wear valve in accordance with claim 1, wherein a valve stem (7) is attached to the top end of the shutter, wherein,

the valve rod (7) penetrates through the valve cover (11) and a bracket (17), and the bracket (17) is connected with the end part of the valve cover (11);

the valve rod (7) is mounted by means of an upper sealing seat (12) and a packing gland (16), wherein,

a packing pad (13), a packing cavity (14) and a packing pressing sleeve (15) are sequentially arranged between the upper sealing seat (12) and the packing pressing cover (16), and packing is filled in the packing cavity (14).

8. An on-line adjustable wear-resistant valve according to claim 1, characterized in that a blowdown connection pipe (41) is provided on the valve body (4) and a purge connection pipe (111) is provided on the valve cover (11).

9. An online adjustable wear-resistant valve according to claim 1, characterized in that the connection between the valve body (4) and the valve cover (11) is made by means of a stud (9) and a nut (10).

10. An in-line adjustable wear valve as claimed in claim 4, wherein said first channel (611) and said second channel are integrally formed, and the cross-section of said first channel (611) gradually increases or decreases from one end to the other.

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