CN211875261U

CN211875261U - Valve assembly

Info

Publication number: CN211875261U
Application number: CN202020026898.0U
Authority: CN
Inventors: 徐正贵
Original assignee: JIANGSU SUZHOU STEEL GROUP CO Ltd; Suzhou Suxin Special Steel Co ltd; Peking University Founder Group Co Ltd
Current assignee: JIANGSU SUZHOU STEEL GROUP CO Ltd; Suzhou Suxin Special Steel Co ltd; Peking University Founder Group Co Ltd
Priority date: 2020-01-07
Filing date: 2020-01-07
Publication date: 2020-11-06
Anticipated expiration: 2030-01-07

Abstract

The utility model provides a valve component, which comprises a shell component, a valve plate, a driving shaft, a shaft sleeve component and a sealing ring component; the shell component is provided with a cavity; the valve plate is arranged in the cavity; the drive shaft is connected with the valve plate and extends towards the outer side of the shell assembly for driving the valve plate; the shaft sleeve assembly is connected with the shell assembly and sleeved on the driving shaft; the sealing ring assembly is arranged on the shaft sleeve assembly and matched with the driving shaft to seal a gap between the driving shaft and the shaft sleeve assembly. The valve component provided by the utility model is provided with the sealing ring component between the shaft sleeve component and the driving shaft, thereby realizing the sealing of the end part of the driving shaft, the sealing ring component is not easy to age, has longer service life, and reduces the phenomenon of flue gas leakage of the valve component; and because the sealing washer subassembly possesses longer life for operating personnel no longer need often dismantle the maintenance valve subassembly, when reducing operating personnel intensity of labour, improve the availability factor of hot-blast furnace flue.

Description

Valve assembly

Technical Field

The utility model relates to a control valve technical field particularly, relates to a valve module.

Background

At present, a control valve is arranged on a flue of a hot blast stove of an iron-making plant, the control valve comprises a valve plate and a driving shaft, the driving shaft drives the valve plate to act, and then the control valve can control the flue to be opened or closed.

In the related art, a shaft sleeve is arranged at the end part of a driving shaft, a graphite packing, an oil ring and an oil immersion packing are arranged in the shaft sleeve along the axial direction of the driving shaft, and the graphite packing and the oil immersion packing are used for sealing a gap between the driving shaft and the shaft sleeve; however, the graphite packing and the oil-immersed packing are easy to age under the impact of high-temperature and high-pressure smoke, so that the control valve is easy to generate smoke leakage.

SUMMERY OF THE UTILITY MODEL

The present invention aims at least solving one of the technical problems existing in the prior art or the related art.

To this end, a first aspect of the present invention proposes a valve assembly.

In view of the above, the present invention provides, in a first aspect, a valve assembly including a housing assembly, a valve plate, a driving shaft, a boss assembly and a seal ring assembly; the shell component is provided with a cavity; the valve plate is arranged in the cavity; the drive shaft is connected with the valve plate and extends towards the outer side of the shell assembly for driving the valve plate; the shaft sleeve assembly is connected with the shell assembly and sleeved on the driving shaft; the sealing ring assembly is arranged on the shaft sleeve assembly and matched with the driving shaft to seal a gap between the driving shaft and the shaft sleeve assembly.

In the valve component provided by the utility model, the end part of the driving shaft extends out of the shell component, and an operator can control the driving shaft to rotate so as to drive the valve plate to act, so as to control the opening and closing of the valve component; a shaft sleeve assembly is arranged at one end of the driving shaft, which extends out of the shell assembly, and the shaft sleeve assembly is axially matched with the driving shaft so as to support the driving shaft; a sealing ring assembly is arranged between the shaft sleeve assembly and the driving shaft, so that the end part of the driving shaft is sealed, the sealing ring assembly is not easy to age, the service life is longer, and the phenomenon of flue gas leakage of the valve assembly is reduced; and because the sealing washer subassembly possesses longer life for operating personnel no longer need often dismantle the maintenance valve subassembly, when reducing operating personnel intensity of labour, improve the availability factor of hot-blast furnace flue.

In addition, the utility model provides a valve module among the above-mentioned technical scheme can also have following additional technical characterstic:

in one technical scheme of the utility model, the shaft sleeve assembly comprises a first cooling shaft sleeve and a second cooling shaft sleeve; the first cooling shaft sleeve is connected with the shell assembly; the second cooling shaft sleeve is embedded in the first cooling shaft sleeve; wherein, first cooling chamber is enclosed to first cooling shaft sleeve and second cooling shaft sleeve to the cooling shaft sleeve subassembly.

In this technical scheme, be provided with first cooling chamber between first cooling shaft sleeve and the second cooling shaft sleeve, cooling water can let in the first cooling chamber, and then realizes the cooling to the shaft sleeve subassembly, reduces the heat that transmits to the sealing washer subassembly, delays the ageing speed of sealing washer subassembly, further prolongs the life of sealing washer subassembly.

In one technical scheme of the utility model, the shaft sleeve component comprises a baffle plate, a first water inlet and a first water outlet; the partition plate is arranged in the first cooling cavity and arranged along the axial direction of the driving shaft; the first water inlet is arranged on the first cooling shaft sleeve, is positioned on one side of the partition plate and is communicated with the first cooling cavity; the first water outlet is arranged on the first cooling shaft sleeve, is positioned on the other side of the partition plate and is communicated with the first cooling cavity.

In this technical scheme, the water route is separated out with first cooling chamber to the baffle, the both sides of baffle are provided with first water inlet and first delivery port respectively, the one end in water route is provided with first water inlet promptly, the other end in water route is provided with first delivery port, the cooling water enters into first cooling chamber by first water inlet, flow to first delivery port department, first cooling chamber flows out via first delivery port, and then realize the cooling to the axle sleeve subassembly, can reduce the temperature of axle sleeve subassembly effectively, avoid high temperature to accelerate the ageing of sealing washer subassembly, ensure the sealed effect of driving shaft tip.

The included angle between the axis of the first water inlet and the axis of the first water outlet is larger than 15 degrees and smaller than 30 degrees.

The included angle between the axis of the first water inlet and the axis of the first water outlet is 15 degrees, 22 degrees and 30 degrees, so that when the first water inlet and the first water outlet are installed, the first water inlet and the first water outlet are prevented from interfering with each other.

In one technical scheme of the utility model, the shaft sleeve component also comprises a check ring, at least one packing and an oil ring; one side of the retainer ring is abutted against the second cooling sleeve; at least one packing is embedded in the second cooling sleeve and matched with the driving shaft; the oil ring is embedded in the second cooling sleeve and matched with the driving shaft; one side of at least one packing is abutted against the other side of the check ring, and the oil ring is abutted against the other side of the at least one packing.

In this technical scheme, the retaining ring is used for supporting the packing, avoids the packing to deviate from the axle sleeve subassembly, and the packing can realize certain sealed effect when supporting the drive shaft, plays supplementary sealed effect, and then promotes the leakproofness of drive shaft tip.

The packing is graphite packing.

The oil ring is provided with an oil storage cavity and a second oil way, the oil storage cavity is located on the inner wall of the oil ring, the second oil way is communicated with the oil storage cavity, the shaft sleeve assembly further comprises a second oil nozzle, and the second oil nozzle is communicated with the second oil way after penetrating through the first cooling shaft sleeve and the second cooling shaft sleeve.

In one technical scheme of the utility model, the shaft sleeve component also comprises a first gland and a second gland; the first gland part is embedded in the second cooling sleeve and is abutted against the oil ring, and the sealing ring assembly is embedded in the first gland; the second gland is connected with the first gland and is pressed on the sealing ring component.

In this technical scheme, the second gland compresses tightly the sealing washer subassembly in first gland, realizes the fixed to the sealing washer subassembly, ensures the stability of sealing washer subassembly.

In a technical solution of the present invention, a cooling hole is formed at an end of the driving shaft, the valve assembly further includes a cooling pipe assembly and a rotary joint, the cooling pipe assembly is embedded in the cooling hole, the cooling pipe assembly includes a water pipe and a plurality of supporting blocks, the plurality of supporting blocks are disposed on an outer wall of the water pipe along a circumferential direction of the water pipe and extend out of an end of the water pipe, so that a gap is formed between the outer wall of the water pipe and an inner wall of the cooling hole; the rotary joint is arranged on the driving shaft and comprises a second water inlet and a second water outlet, the second water inlet is communicated with the water pipe, and the second water outlet is communicated with the gap.

In the technical scheme, the outer side wall of the water pipe is provided with the plurality of supporting blocks, so that a certain gap is formed between the outer side wall of the water pipe and the inner side wall of the cooling hole, the water pipe is ensured not to shake in the cooling hole, and the coaxiality of the water pipe and the driving shaft is improved; the end parts of the water ends extend out of the supporting blocks, so that the end parts of the water pipes and the bottom wall of the cooling hole have certain gaps, the cooling water can flow into the gaps between the water pipes and the cooling hole from the inside of the water pipes, and a second cooling cavity is formed; the cooling water enters into the one end of water pipe by the second water inlet to flow to the other end, and the cooling water flows and enters into in the clearance between water pipe and the cooling hole behind the other end, flows out by the second delivery port again, realizes the circulation of cooling water, and then realizes the cooling to the drive shaft, reduces by the heat of drive shaft transmission to sealing washer subassembly, delays sealing washer subassembly's ageing speed, further prolongs sealing washer subassembly's life.

The number of the supporting blocks is two, three or four, and the supporting blocks are distributed on the side wall of the water pipe at equal angles.

Because the shaft assembly in contact with the outer ring of the sealing ring assembly and the driving shaft in contact with the inner ring of the sealing ring assembly are provided with the cooling cavities, the temperature of a part in contact with the sealing ring assembly is effectively reduced, the sealing ring assembly works in a relatively good working environment, the sealing effect of the sealing ring assembly is improved, and the service life of the sealing ring assembly is prolonged.

The cooling pipe assembly further comprises a pipe joint, and the water pipe is connected with the rotary joint through the pipe joint.

The first water inlet, the first water outlet, the second water inlet and the second water outlet are sequentially connected, namely the first water inlet is connected with a water inlet pipe of a cooling water source, the first water outlet is connected with the second water inlet, and the second water outlet is connected with a water return pipe of the cooling water source.

In one technical scheme of the utility model, a plurality of annular grooves are arranged on the end surface of the second cooling shaft sleeve, and are distributed along the radial direction of the driving shaft; the valve component further comprises a labyrinth sealing ring, the labyrinth sealing ring is sleeved on the driving shaft, a plurality of annular protrusions are arranged on the end face of the labyrinth sealing ring, and the annular protrusions are matched with the annular grooves.

In the technical scheme, a plurality of annular grooves on the end face of the second cooling shaft sleeve are matched with a plurality of annular protrusions on the end face of the labyrinth seal ring, so that the length of a path required by high-temperature and high-pressure gas in the cavity to impact the seal ring assembly is prolonged, the resistance on the path is increased, and the impact force of the high-temperature and high-pressure gas on the seal ring assembly is further reduced; especially, at the moment when the valve component is opened, the impact of high-temperature and high-pressure gas on the sealing ring component can be effectively reduced, and the service life of the sealing ring component is further prolonged.

Labyrinth sealing ring and drive shaft interference fit, or transition fit are provided with the jackscrew hole on the labyrinth sealing ring, and the jackscrew passes jackscrew hole back and drive axial coordination, and then realizes the fixed to labyrinth sealing ring.

Labyrinth sealing ring and drive shaft interference fit can avoid gaseous passing through between by labyrinth sealing ring and the drive shaft for high temperature high pressure gas must pass through via the clearance between the terminal surface of labyrinth sealing ring and the terminal surface of second cooling shaft sleeve, and then promotes labyrinth sealing ring's effect, further reduces the impact of high temperature high pressure gas to sealing washer subassembly.

In one technical solution of the present invention, a first oil path is provided on the second cooling sleeve, and one end of the first oil path is communicated with at least one of the plurality of annular grooves; the valve component further comprises a first oil nozzle, the first oil nozzle penetrates through the shell component and the first cooling sleeve and then is connected with the second cooling sleeve, and the first oil nozzle is communicated with the first oil way.

In this technical scheme, through setting up first oil circuit for operating personnel accessible first glib talker pours into lubricating oil into to the clearance between the terminal surface of labyrinth seal ring and the terminal surface of second cooling shaft sleeve, and then reduces the frictional force between the terminal surface of labyrinth seal ring and the terminal surface of second cooling shaft sleeve.

In one technical solution of the present invention, the valve assembly further includes a bearing seat and a bearing; the bearing seat is connected with the shell assembly; the bearing inlays in the bearing frame, and the drive shaft is worn to locate on the bearing.

The bearing is a double-row tapered roller bearing.

In this technical scheme, support the drive shaft through setting up the bearing, reduce the back shaft axial and beat, further promote the stability of drive shaft.

The utility model discloses an among the technical scheme, the sealing washer subassembly is V type sealing washer subassembly, and V type sealing washer subassembly's pressure-bearing face is towards the cavity.

In the technical scheme, the bearing surface of the V-shaped sealing ring component faces the cavity, and when high-temperature and high-pressure gas impacts the bearing surface of the sealing ring component, the sealing ring component is further opened, so that the sealing ring component is respectively in close contact with the driving shaft and the shaft sleeve component, and the sealing effect of the sealing ring component is improved.

The valve assembly is used for controlling a flue of the hot blast stove.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows a schematic structural view of a valve assembly according to an embodiment of the present invention;

fig. 2 is an enlarged partial view at a of the valve assembly of fig. 1 according to one embodiment of the present invention;

fig. 3 shows a schematic view of a bushing assembly according to an embodiment of the invention;

fig. 4 shows a side view of a bushing assembly according to an embodiment of the invention;

fig. 5 shows a schematic view of a second cooling collar according to an embodiment of the invention;

fig. 6 shows a schematic view of a first cooling collar according to an embodiment of the invention;

fig. 7 shows a schematic view of an oil ring according to an embodiment of the present invention;

figure 8 shows a side view of a first gland in accordance with an embodiment of the present invention;

figure 9 shows a schematic view of a first gland according to an embodiment of the present invention;

figure 10 shows a schematic view of a second gland according to an embodiment of the present invention;

fig. 11 shows a schematic view of a drive shaft according to an embodiment of the invention;

fig. 12 shows a schematic view of a cooling tube assembly according to an embodiment of the present invention;

fig. 13 illustrates a side view of a cooling tube assembly according to an embodiment of the present invention;

figure 14 shows a schematic view of a water pipe according to an embodiment of the invention;

fig. 15 shows a schematic view of a pipe joint according to an embodiment of the invention;

figure 16 shows a schematic view of a labyrinth sealing ring according to an embodiment of the invention;

fig. 17 shows a schematic view of a seal assembly according to an embodiment of the invention;

fig. 18 shows a schematic structural view of a valve assembly according to another embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 18 is:

1 housing component, 12 first housing, 14 second housing, 2 drive shaft, 202 cooling hole, 3 shaft sleeve component, 302 first cooling shaft sleeve, 304 second cooling shaft sleeve, 3042 annular groove, 3044 first oil circuit, 306 first cooling cavity, 308 retaining ring, 310 packing, 312 oil ring, 3122 second oil circuit, 3124 oil storage cavity, 314 first gland, 316 second gland, 318 baffle, 320 first water inlet, 322 first water outlet, 324 second oil nozzle, 4 sealing ring component, 5 cooling pipe component, 502 water pipe, 504 support block, 506 pipe joint, 6 rotary joint, 7 labyrinth sealing ring, 702 annular protrusion, 8 first oil nozzle, 92 bearing seat, 94 bearing.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

The valve assembly according to some embodiments of the present invention is described below with reference to fig. 1 to 18.

In an embodiment of the first aspect of the present invention, as shown in fig. 1 and 2, the present invention provides a valve assembly, which includes a housing assembly 1, a valve plate, a driving shaft 2, a shaft sleeve assembly 3 and a sealing ring assembly 4; the shell component 1 is provided with a cavity; the valve plate is arranged in the cavity; the drive shaft 2 is connected with the valve plate and extends towards the outer side of the shell assembly 1 for driving the valve plate; the shaft sleeve component 3 is connected with the shell component 1 and sleeved on the driving shaft 2; the sealing ring assembly 4 is installed on the shaft sleeve assembly 3 and is matched with the driving shaft 2 to seal a gap between the driving shaft 2 and the shaft sleeve assembly 3.

In this embodiment, the end of the driving shaft 2 extends out of the housing assembly 1, and an operator can control the driving shaft 2 to rotate, so as to drive the valve plate to act, so as to control the opening and closing of the valve assembly; a shaft sleeve component 3 is arranged at one end of the driving shaft 2 extending out of the shell component 1, and the shaft sleeve component 3 is matched with the driving shaft 2 to support the driving shaft 2; a sealing ring component 4 is arranged between the shaft sleeve component 3 and the driving shaft 2, so that the end part of the driving shaft 2 is sealed, the sealing ring component 4 is not easy to age, the service life is longer, and the smoke leakage phenomenon of the valve component is reduced; and because the sealing ring component 4 has longer service life, an operator does not need to frequently disassemble and maintain the valve component any more, the labor intensity of the operator is reduced, and the use efficiency of the flue of the hot blast stove is improved.

In one embodiment of the present invention, as shown in fig. 3 and 4, the sleeve assembly 3 includes a first cooling sleeve 302 and a second cooling sleeve 304; the first cooling collar 302 is connected to the housing assembly 1; the second cooling sleeve 304 is embedded in the first cooling sleeve 302; therein, the first cooling collar 302 and the second cooling collar 304 enclose a first cooling cavity 306 for cooling the collar assembly 3.

In this embodiment, as shown in fig. 5 and 6, a first cooling cavity 306 is disposed between the first cooling sleeve 302 and the second cooling sleeve 304, and cooling water may be introduced into the first cooling cavity 306, so as to cool the sleeve assembly 3, reduce heat transferred to the seal ring assembly 4, delay the aging rate of the seal ring assembly 4, and further prolong the service life of the seal ring assembly 4.

In one embodiment of the present invention, as shown in fig. 4, the shaft sleeve assembly 3 includes a partition 318, a first water inlet 320 and a first water outlet 322; a partition 318 is provided in the first cooling chamber 306, and is provided in the axial direction of the drive shaft 2; the first water inlet 320 is arranged on the first cooling shaft sleeve 302, is positioned at one side of the partition plate 318 and is communicated with the first cooling cavity 306; the first water outlet 322 is disposed on the first cooling sleeve 302, located on the other side of the partition 318, and communicated with the first cooling chamber 306.

In this embodiment, the partition 318 divides the first cooling chamber 306 into a water path, two sides of the partition 318 are respectively provided with a first water inlet 320 and a first water outlet 322, that is, one end of the water path is provided with the first water inlet 320, the other end of the water path is provided with the first water outlet 322, cooling water enters the first cooling chamber 306 from the first water inlet 320, flows to the first water outlet 322, and flows out of the first cooling chamber 306 through the first water outlet 322, so as to cool the bushing assembly 3, thereby effectively reducing the temperature of the bushing assembly 3, avoiding the aging of the high-temperature accelerating seal ring assembly 4, and ensuring the sealing effect of the end portion of the driving shaft 2.

The angle between the axis of the first water inlet 320 and the axis of the first water outlet 322 is greater than 15 degrees and less than 30 degrees.

The included angle between the axis of the first water inlet 320 and the axis of the first water outlet 322 is 15 degrees, 22 degrees and 30 degrees to avoid the first water inlet 320 and the first water outlet 322 from interfering with each other when the first water inlet 320 and the first water outlet 322 are installed.

In one embodiment of the present invention, as shown in fig. 2 and 7, the sleeve assembly 3 further includes a retainer ring 308, at least one packing 310 and an oil ring 312; one side of the retainer ring 308 abuts against the second cooling jacket; at least one packing 310 is embedded in the second cooling sleeve and matched with the driving shaft 2; the oil ring 312 is embedded in the second cooling jacket and is matched with the driving shaft 2; wherein, one side of at least one packing set 310 is abutted against the other side of the retainer ring 308, and the oil ring 312 is abutted against the other side of at least one packing set 310.

In this embodiment, the retaining ring 308 is used for supporting the packing 310, and the packing 310 is prevented from being separated from the sleeve assembly 3, and the packing 310 can realize a certain sealing effect while supporting the driving shaft 2, thereby playing a role in auxiliary sealing and further improving the sealing performance of the end part of the driving shaft 2.

The packing 310 is a graphite packing 310.

As shown in fig. 3 and 7, the oil ring 312 is provided with an oil storage cavity 3124 and a second oil passage 3122, the oil storage cavity 3124 is located on an inner wall of the oil ring 312, the second oil passage 3122 is communicated with the oil storage cavity 3124, the sleeve assembly 3 further includes a second oil nipple 324, and the second oil nipple 324 is communicated with the second oil passage 3122 after passing through the first cooling sleeve 302 and the second cooling sleeve 304.

In one embodiment of the present invention, as shown in fig. 2, 8, 9 and 10, the bushing assembly 3 further comprises a first gland 314 and a second gland 316; the first gland 314 is partially embedded in the second cooling jacket and is abutted against the oil ring 312, and the sealing ring assembly 4 is embedded in the first gland 314; the second gland 316 is connected to the first gland 314 and is pressed against the sealing ring assembly 4.

In this embodiment, the second gland 316 compresses the seal ring assembly 4 within the first gland 314, thereby securing the seal ring assembly 4 and ensuring the stability of the seal ring assembly 4.

In an embodiment of the present invention, as shown in fig. 2 and 11, the end portion of the driving shaft 2 is provided with a cooling hole 202, the valve assembly further includes a cooling pipe assembly 5 and a rotary joint 6, the cooling pipe assembly 5 is embedded in the cooling hole 202, as shown in fig. 12 and 13, the cooling pipe assembly 5 includes a water pipe 502 and a plurality of supporting blocks, the plurality of supporting blocks 504 are disposed on an outer wall of the water pipe 502 along a circumferential direction of the water pipe 502 and extend out of the end portion of the water pipe 502, so that a gap is formed between the outer wall of the water pipe 502 and an inner wall of the cooling hole 202; rotary joint 6 sets up on drive shaft 2, and rotary joint 6 includes second water inlet and second delivery port, and the second water inlet is linked together with water pipe 502, and the second delivery port is linked together with the clearance.

In this embodiment, the outer sidewall of the water pipe 502 is provided with a plurality of supporting blocks 504, so that a certain gap is formed between the outer sidewall of the water pipe 502 and the inner sidewall of the cooling hole 202, and the water pipe 502 is ensured not to shake in the cooling hole 202, thereby improving the coaxiality of the water pipe 502 and the driving shaft 2; because the supporting blocks 504 extend out of the end parts of the water ends, the end parts of the water pipes 502 and the bottom walls of the cooling holes 202 have certain gaps, so that the cooling water can flow from the water pipes 502 to the gaps between the water pipes 502 and the cooling holes 202, and a second cooling cavity is formed; the cooling water enters into the one end of water pipe 502 by the second water inlet to the other end flows, and the cooling water flows and enters into the clearance between water pipe 502 and the cooling hole 202 behind the other end, flows out by the second delivery port again, realizes the circulation of cooling water, and then realizes the cooling to drive shaft 2, reduces the heat that is transmitted to sealing washer subassembly 4 by drive shaft 2, delays the ageing speed of sealing washer subassembly 4, further prolongs sealing washer subassembly 4's life.

The plurality of support blocks 504 may be two, three, or four in number, and may be equally angularly distributed on the sidewalls of the water tubes 502.

Because the shaft assembly that contacts with the sealing washer subassembly 4 outer lane and the drive shaft 2 that contacts with the sealing washer subassembly 4 inner circle all are provided with the cooling chamber, and then reduced the temperature of the part that contacts with sealing washer subassembly 4 effectively for work in sealing washer subassembly 4 is in comparatively good operational environment, and then promote sealing effect of sealing washer subassembly 4, extension sealing washer subassembly 4's life.

As shown in fig. 14 and 15, the cooling pipe assembly 5 further includes a pipe connector 506, and the water pipe 502 is connected to the rotary connector 6 through the pipe connector 506.

The first water inlet 320, the first water outlet 322, the second water inlet and the second water outlet are sequentially connected, that is, the first water inlet 320 is connected with a water inlet pipe 502 of a cooling water source, the first water outlet 322 is connected with the second water inlet, and the second water outlet is connected with a water return pipe 502 of the cooling water source.

In an embodiment of the present invention, as shown in fig. 2, 5 and 16, a plurality of annular grooves 3042 are provided on an end surface of the second cooling sleeve 304, and the plurality of annular grooves 3042 are distributed along a radial direction of the driving shaft 2; the valve assembly further comprises a labyrinth sealing ring 7, the labyrinth sealing ring 7 is sleeved on the driving shaft 2, a plurality of annular protrusions 702 are arranged on the end face of the labyrinth sealing ring 7, and the annular protrusions 702 are matched with the annular grooves 3042.

In this embodiment, the plurality of annular grooves 3042 on the end surface of the second cooling sleeve 304 are matched with the plurality of annular protrusions 702 on the end surface of the labyrinth seal ring 7, so as to extend the length of the path required by the high-temperature and high-pressure gas in the cavity to impact the seal ring assembly 4, increase the resistance on the path, and further reduce the impact force of the high-temperature and high-pressure gas on the seal ring assembly 4; especially, at the moment of opening the valve assembly, the impact of high-temperature and high-pressure gas on the sealing ring assembly 4 can be effectively reduced, and the service life of the sealing ring assembly 4 is further prolonged.

Labyrinth sealing ring 7 and drive shaft 2 interference fit, or transition fit are provided with the jackscrew hole on the labyrinth sealing ring 7, and the jackscrew passes behind the jackscrew hole with drive shaft 2 to the cooperation, and then realize fixing labyrinth sealing ring 7.

Labyrinth seal ring 7 and drive shaft 2 interference fit can avoid gaseous passing through between by labyrinth seal ring 7 and drive shaft 2 for high temperature high pressure gas must pass through via the clearance between the terminal surface of labyrinth seal ring 7 and the terminal surface of second cooling shaft sleeve 304, and then promotes labyrinth seal ring 7's effect, further reduces the impact of high temperature high pressure gas to sealing washer subassembly 4.

In an embodiment of the present invention, as shown in fig. 2, a first oil path 3044 is disposed on the second cooling sleeve 304, and one end of the first oil path 3044 is communicated with at least one annular groove 3042 of the plurality of annular grooves 3042; the valve assembly further comprises a first oil nozzle 8, the first oil nozzle 8 penetrates through the shell assembly 1 and the first cooling jacket and then is connected with the second cooling jacket, and the first oil nozzle 8 is communicated with the first oil path 3044.

In this embodiment, by providing the first oil path 3044, an operator can inject lubricating oil into a gap between the end surface of the labyrinth seal ring 7 and the end surface of the second cooling sleeve 304 through the first oil nipple 8, thereby reducing the friction force between the end surface of the labyrinth seal ring 7 and the end surface of the second cooling sleeve 304.

In one embodiment of the present invention, as shown in fig. 1, the valve assembly further comprises a bearing housing 92 and a bearing 94; the bearing block 92 is connected with the housing assembly 1; the bearing 94 is embedded in the bearing seat 92, and the drive shaft 2 is inserted through the bearing 94.

The bearing 94 is a double row tapered roller bearing.

In this embodiment, by providing the bearing 94 to support the drive shaft 2, the axial runout of the support shaft is reduced, and the stability of the drive shaft 2 is further improved.

In an embodiment of the present invention, as shown in fig. 17, the sealing ring assembly 4 is a V-shaped sealing ring assembly, and the pressure-bearing surface of the V-shaped sealing ring assembly faces the cavity.

In this embodiment, the pressure-bearing surface of the V-shaped sealing ring assembly faces the cavity, and when the high-temperature and high-pressure gas impacts the pressure-bearing surface of the sealing ring assembly 4, the sealing ring assembly 4 is further opened, so that the sealing ring assembly 4 is respectively in close contact with the driving shaft 2 and the bushing assembly 3, and the sealing effect of the sealing ring assembly 4 is further improved.

The valve assembly is used for controlling a flue of the hot blast stove.

As shown in fig. 18, the housing assembly 1 includes a first housing 12 and a second housing 14, and the second housing 14 is connected to the first housing 12 and presses the boss assembly 3 against the first housing 12.

In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In the present disclosure, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A valve assembly, comprising:

a housing assembly provided with a cavity;

a valve plate disposed within the cavity;

a drive shaft connected to the valve plate and extending outward of the housing assembly for driving the valve plate;

the shaft sleeve assembly is connected with the shell assembly and sleeved on the driving shaft;

and the sealing ring component is arranged on the shaft sleeve component and is matched with the driving shaft so as to seal a gap between the driving shaft and the shaft sleeve component.

2. The valve assembly of claim 1, wherein the boss assembly comprises:

a first cooling collar coupled to the housing assembly;

the second cooling shaft sleeve is embedded in the first cooling shaft sleeve;

the first cooling shaft sleeve and the second cooling shaft sleeve enclose a first cooling cavity to cool the shaft sleeve assembly.

3. The valve assembly of claim 2, wherein the boss assembly comprises:

a partition plate disposed in the first cooling chamber and disposed in an axial direction of the drive shaft;

the first water inlet is arranged on the first cooling shaft sleeve, is positioned on one side of the partition plate and is communicated with the first cooling cavity;

and the first water outlet is arranged on the first cooling shaft sleeve, is positioned on the other side of the partition plate and is communicated with the first cooling cavity.

4. The valve assembly of claim 2, wherein the boss assembly further comprises:

one side of the retainer ring is abutted against the second cooling jacket;

the packing is embedded in the second cooling sleeve and matched with the driving shaft;

the oil ring is embedded in the second cooling jacket and matched with the driving shaft;

one side of the at least one packing is abutted against the other side of the check ring, and the oil ring is abutted against the other side of the at least one packing.

5. The valve assembly of claim 4, wherein the boss assembly further comprises:

the first gland is partially embedded in the second cooling jacket and abuts against the oil ring, and the sealing ring assembly is embedded in the first gland;

and the second gland is connected with the first gland and is arranged on the sealing ring component in a pressing manner.

6. The valve assembly of claim 1, wherein the end of the drive shaft is provided with a cooling bore, the valve assembly further comprising:

the cooling pipe assembly is embedded in the cooling hole and comprises a water pipe and a plurality of supporting blocks, and the supporting blocks are arranged on the outer wall of the water pipe along the circumferential direction of the water pipe and extend out of the end part of the water pipe so that a gap is formed between the outer wall of the water pipe and the inner wall of the cooling hole;

the rotary joint is arranged on the driving shaft and comprises a second water inlet and a second water outlet, the second water inlet is communicated with the water pipe, and the second water outlet is communicated with the gap.

7. The valve assembly of claim 2,

a plurality of annular grooves are formed in the end face of the second cooling shaft sleeve and distributed in the radial direction of the driving shaft;

the valve component further comprises a labyrinth sealing ring, the labyrinth sealing ring is sleeved on the driving shaft, a plurality of annular protrusions are arranged on the end face of the labyrinth sealing ring, and the annular protrusions are matched with the annular grooves.

8. The valve assembly of claim 7,

a first oil way is arranged on the second cooling shaft sleeve, and one end of the first oil way is communicated with at least one annular groove in the plurality of annular grooves;

the valve assembly further comprises a first oil nozzle, the first oil nozzle penetrates through the shell assembly and the first cooling shaft sleeve and then is connected with the second cooling sleeve, and the first oil nozzle is communicated with the first oil way.

9. The valve assembly of claim 1, further comprising:

a bearing housing connected with the housing assembly;

the bearing inlay in the bearing frame, the drive shaft wears to locate on the bearing.

10. The valve assembly of claim 1,

the sealing ring assembly is a V-shaped sealing ring assembly, and the pressure bearing surface of the V-shaped sealing ring assembly faces the cavity.