CN209164599U - Gas sealing device for rotating equipment and stirrer - Google Patents

Abstract

The utility model relates to a gas seal device and agitator for rotating equipment, including the equipment seal box, wear the equipment pivot of dress on the equipment seal box, be equipped with sealing device, its characterized in that between equipment seal box and the pivot: the sealing device is a gas sealing device and comprises a shaft sleeve, a sealing sleeve, a dynamic sealing component and a parking sealing component which are arranged on a rotating shaft of the equipment, wherein the shaft sleeve, the sealing sleeve, the dynamic sealing component and the parking sealing component form a gas sealing cavity; the shaft sleeve is connected with a disassembling ring at the outer side of the equipment sealing box, and the disassembling ring is sleeved on the equipment rotating shaft; the seal cartridge is mounted on the equipment seal box by fasteners. Still openly use above-mentioned gas seal device's a stirrer, the utility model has the advantages of simple structure, installation convenient to use, easy maintenance, long service life, low cost, sealed effectual.

Description

A kind of rotating machinery gas-tight sealing and blender

Technical field

The utility model belongs to equipment technical field of sealing technology, is lower than 300rpm more particularly to a kind of revolving speed, pressure is lower than The rotating machinery gas-tight sealing and blender of 0.4Mpa.

Background technique

Currently, mechanical seal (including dry gas seals) structure both domestic and external and sealing principle are essentially identical, by a pair of or number Sealing ring is bonded to each other to form seal face, wherein the sealing ring to rotate with the axis is referred to as rotating ring or rotating ring, is not rotated with the axis Sealing ring be referred to as stationary ring or stationary ring, the compensation mechanism being made of spring and correlated parts to sealing ring apply spring force to The nose balance function of sealing ring is played, remaining leak point is sealed using sealing rubber ring.

Mechanical seal structure is complicated, and leak point is more, very high to assembly precision requirement, and by live use condition, equipment The factors such as precision, installation personnel technical level influence, and cause sealing using effect unstable, easily leak, service life Mostly half a year was to 1 year or so.

The replacement of mechanical seal is also extremely difficult, and mechanical seal is all ring-shaped work pieces, these parts cannot generally be made into and cut open Fraction, therefore just need partly or entirely to dismantle the running part of machinery equipment in replacement, it could be taken out from transmission shaft end close Seal part.Large scale equipment dismounting is difficult, reduces utilization rate of equipment and installations, not only expends a large amount of maintenance fund, also expends a large amount of Manpower and material resources.

Summary of the invention

The utility model is to solve technical problem present in well-known technique and provide that a kind of structure is simple, the side of installing and using Just, the good a kind of rotating machinery gas-tight sealing of easy to maintenance, long service life, low in cost, sealing effect and stirring Device.

The utility model is adopted the technical scheme that solve technical problem present in well-known technique:

A kind of rotating machinery gas-tight sealing, including sealing box of equipment, the equipment being installed in sealing box of equipment turn Axis is equipped with sealing device between the sealing box of equipment and shaft, it is characterised in that: the sealing device is air seal dress It sets, it is above-mentioned axle sleeve, close including axle sleeve, sealing shroud, dynamic sealing component and the stop seal component being mounted on equipment rotating shaft Big envelope, the first dynamic sealing component and stop seal component form air seal chamber, when equipment runs well, air seal chamber The pressure of interior sealing gas is greater than the pressure in sealing box of equipment；The axle sleeve connection is mounted on equipment and turns in sealing box of equipment Positioning member on axis is equipped with the first rubber seal between the axle sleeve outer end face and positioning member end face；It is described in equipment The outside of the seal box axle sleeve connection disassembling ring, the stripping ring are sleeved in the equipment rotary shaft；The sealing shroud It is mounted on sealing box of equipment by fastener.In actual use, steady to the intracavitary injection pressure of air seal by air inlet Fixed air, air are entered in sealing box of equipment by stop seal component, and air pressure is greater than sealing box of equipment slurries 0.01~0.2MPa of pressure, it is intracavitary to may not flow into air seal for slurries when guaranteeing pump operating, 5 minutes after arrestment operating Turn off the air intake control valve of air inlet, the intracavitary air pressure rapid drawdown of air seal after air intake control valve is closed, in container Stop seal component can be tightly compressed on wear-resisting axle sleeve by pressure medium, play the sealing to medium, can be carried out at this time The disassembly and maintenance of sealing device.The sealing ring and spring-compensating structure of tradition machinery sealing dress are eliminated, part is less and group Dress is easy, and human cost and economic cost is greatly saved；Above-mentioned technical proposal is in addition to dynamic sealing component and stop seal component Sealing structure outside, between sealed jacketed box equipment box, between axle sleeve and positioning member, air seal room end face and parking it is close It is equipped with rubber seal between envelope support plate, plays the role of auxiliary seal, effectively prevents leaking, improve leakproofness Energy.

The utility model can also use following technical measures:

Above-mentioned sealing shroud includes sealing box of equipment interconnecting piece, air seal room and dynamic sealing mounting portion；The equipment Seal box interconnecting piece is fixed in the sealing shroud mounting groove of installation sealing box of equipment inner wall by fastener, sealing box of equipment connection The outer circle wall in portion is equipped with the second rubber seal；It is close equipped with moving on the dynamic sealing mounting portion described in the bottom of air seal room Mounting groove is sealed, the first dynamic sealing component is installed in the dynamic sealing mounting groove；In the air seal of the outside of sealing box of equipment Room is equipped with air inlet and discharge port, installs air intake control valve on the air inlet；Seal plug is installed on the discharge port；? The air seal room end face of the sealing shroud is equipped with stop seal component mounting groove in sealing box of equipment, in stop seal component Stop seal component is installed in mounting groove；The stop seal component and air seal room form air seal chamber.

Above-mentioned sealing shroud includes sealing box of equipment interconnecting piece, air seal room, dynamic sealing mounting portion and support portion；Institute It states sealing box of equipment interconnecting piece to be fixedly mounted in the sealing shroud mounting groove of sealing box of equipment inner wall by fastener, equipment sealing The outer circle wall of case interconnecting piece is equipped with the second rubber seal；

Spacer ring is being equipped in sealing shroud between air seal room and support portion, is being equipped with peace towards spacer ring described in support portion side Tankage is equipped with the second dynamic sealing component in the mounting groove；

Spring bearing is installed on the bearing chamber in the support portion, baffle is equipped between the spring bearing and spacer ring； Bearing gland is installed by fastener on the end face of the outer end support portion of spring bearing, the bearing gland is equipped with and bearing The lubricant passage way of room connection, oil nozzle is installed in the inlet of lubricant passage way on bearing gland；It is installed between bearing gland and axle sleeve Third dynamic sealing component；Bearing chamber is enclosed oil sealing sealing chamber by the first dynamic sealing component and the second dynamic sealing component；

It is equipped with air inlet and discharge port on the air seal room of the outside of sealing box of equipment, is installed on the air inlet Air intake control valve；Seal plug is installed on the discharge port；The air seal room end face of the sealing shroud in sealing box of equipment It is equipped with stop seal component mounting groove, stop seal component is installed in stop seal component mounting groove；Described second move it is close Air seal room is enclosed closed air seal chamber by envelope component and stop seal component.

The stop seal component includes stop seal support plate, sealing gland, stop seal component and connector, institute Stop seal support plate is stated to be located in stop seal component mounting groove, and with axle sleeve outer wall clearance fit, in stop seal component Third rubber seal is equipped between the bottom surface and stop seal support plate of mounting groove；The sealing gland is located at stop seal branch The inside in the outside of fagging, the sealing gland is equipped with stop seal component mounting groove, installs in dynamic sealing component mounting groove Stop seal component, the outer wall palette of the stop seal component and axle sleeve；The connector sequentially passes through sealing gland It is fastenedly connected with stop seal support plate and air seal room.

The intracavitary sealing gas of air seal that the axle sleeve, sealing shroud, dynamic sealing component and stop seal component are formed Pressure be greater than sealing box of equipment in slurries 0.01~0.2MPa of pressure.

The junction dynamic sealing mounting portion of the air seal room described in the outer wall of sealing shroud is equipped with circular conical surface, the air inlet It is arranged on circular conical surface with discharge port.

The sealing shroud is installed from inside to outside by sealing box of equipment, and the air inlet and exhaust outlet on air seal room are located at equipment The outside of seal box；The fastener for connecting sealing shroud is connect by passing through sealing box of equipment on the outside of sealing box of equipment with sealing box of equipment Portion is fastenedly connected, and fastener not extending equipment seal box interconnecting piece.

The outer wall of the axle sleeve is equipped with wear-resistant coating.

The wear-resistant coating is coat of silicon carbide, the thickness of coating preferably 0.2~1mm.

A kind of air seal blender using above-mentioned gas sealing device.

The utility model has the advantages and positive effects of: by adopting the above technical scheme due to the utility model, having Following advantages:

1, structure is simple；Gas-tight sealing eliminate tradition machinery sealing dress sealing ring and spring-compensating structure, zero Part is less and easy for assembly, and human cost and economic cost is greatly saved.

2, easy for installation: only to need for this sealing device to be mounted on equipment rotating shaft, sealing shroud is connect with sealing box of equipment The assembling process entirely sealed is completed, it is convenient and efficient.

3, maintenance cost is low；The vulnerable part of the gas-tight sealing of the utility model is dynamic sealing component and stop seal group Part only needs optionally at most to replace the two accessories, greatly reduces maintenance cost in case of leaking.

4, long service life is equipped with wear-resistant coating in the outer wall of axle sleeve, extends service life, in addition connect sealing shroud Fastener the corrosion and abrasion of slurries in sealing box of equipment are greatly reduced using ecto-entad installation, extend fastener Service life.

5, good seal performance, other than the sealing structure of dynamic sealing component and stop seal component, in sealed jacketed box equipment Rubber seal is equipped between cabinet, between axle sleeve and positioning member, between air seal room end face and stop seal support plate Circle, plays the role of auxiliary seal, effectively prevents leaking, improve sealing performance.

6, realize that sealing and tradition machinery sealing structure compared are simpler by the way of the hydraulic reclamation air into tank, and When for needing oxidation air in tank, chemical reaction can be greatly promoted.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model embodiment 1.

Fig. 2 is the structural schematic diagram of the utility model embodiment 2.

Fig. 3 is air seal agitator structure schematic diagram.

In figure: 1, sealing box of equipment；1-1, sealing shroud mounting groove；2, equipment rotating shaft；3, sealing device；3-1, axle sleeve；3- 2, sealing shroud；3-20, sealing box of equipment interconnecting piece；3-21, air seal room；3-210, stop seal component mounting groove；3-22, Dynamic sealing mounting portion；3-220, dynamic sealing mounting groove；3-23, air inlet；3-24, discharge port；3-240, seal plug；3-25, into Gas control valve；3-26, support portion；3-27, spacer ring；3-28, mounting groove；3-29, the second dynamic sealing component；3-30, spring bearing； 3-31, baffle；3-32, bearing gland；3-33, lubricant passage way；3-34, oil nozzle；3-35, third dynamic sealing component；3-36, oil sealing Seal chamber；3-3, the first dynamic sealing component；3-4, stop seal component；3-40, stop seal support plate；3-41, sealing gland； 3-410, stop seal component mounting groove；3-42, stop seal component；3-43, connector；3-44, third rubber seal；3- 5, the first rubber seal；3-6, stripping ring；3-7, fastener；3-8, the second rubber seal；3-9, air seal chamber；4, fixed Position component；5, slurries；6, tank body；7, power unit；8, agitating shaft；9, agitator arm.

Specific embodiment

For the invention, features and effects that can further appreciate that the utility model, the following examples are hereby given, and cooperates Detailed description are as follows for attached drawing:

Embodiment 1, referring to Fig. 1, a kind of rotating machinery gas-tight sealing, including sealing box of equipment 1, it is installed on and sets Equipment rotating shaft 2 in standby seal box, is equipped with sealing device 3 between the sealing box of equipment and shaft, the sealing device is gas Body sealing device, including axle sleeve 3-1, sealing shroud 3-2, the first dynamic sealing component 3-3 and the parking being mounted on equipment rotating shaft Seal assembly 3-4, above-mentioned axle sleeve, sealing shroud, dynamic sealing component and stop seal component form air seal chamber, in equipment When normal operation, the pressure of the intracavitary sealing gas of air seal is greater than the pressure in sealing box of equipment；The institute in sealing box of equipment 1 The positioning member 4 that axle sleeve 3-1 connection is mounted on equipment rotating shaft 2 is stated, for example, equipment is if it is mixing plant, then positioning structure Part is the blade wheel hub being mounted on equipment rotating shaft, and the first rubber is equipped between the axle sleeve 3-1 outer end face and positioning member end face Glue sealing ring 3-5；The outside in the sealing box of equipment 1 axle sleeve connection disassembling ring 3-6, the stripping ring 3-6 are sleeved on In the equipment rotary shaft 2；The sealing shroud 3-2 is mounted on sealing box of equipment 1 by fastener 3-7.Above-mentioned axle sleeve 3-1 and 2 clearance fit of equipment rotating shaft, and by the chucking power between positioning member and stripping ring, and with equipment rotating shaft rotation and Rotation.

The utility model can also use following technical measures:

Above-mentioned sealing shroud 3-2 includes sealing box of equipment interconnecting piece 3-20, air seal room 3-21 and dynamic sealing installation Portion 3-22；The sealing box of equipment interconnecting piece 3-20 is fixedly mounted on the sealing shroud of 1 inner wall of sealing box of equipment by fastener 3-7 In mounting groove 1-1, the outer circle wall of sealing box of equipment interconnecting piece 3-20 is equipped with the second rubber seal 3-8；In air seal Dynamic sealing mounting portion 3-22 described in the bottom of room 3-21 is equipped with dynamic sealing mounting groove 3-220, the dynamic sealing mounting groove 3-220 The first dynamic sealing structure 3-3 of interior installation, it is mutual by the first dynamic sealing component 3-3 and axle sleeve 3-1 outer wall when equipment rotating shaft 2 is rotated It rubs and plays sealing function；Air inlet 3-23 and discharge port 3- is equipped on the air seal room of the outside of sealing box of equipment 24, air intake control valve 3-25 is installed, for controlling air inlet on the air inlet；Seal plug 3-240 is installed on the discharge port, For discharging the slurries leaked when maintenance；It is close that parking is equipped on the air seal room end face of the sealing shroud in sealing box of equipment Sealing assembly mounting groove 3-210 installs stop seal component 3-4 in stop seal component mounting groove；The stop seal component Air seal chamber 3-9 is formed with air seal room；

The stop seal component 3-4 includes stop seal support plate 3-40, sealing gland 3-41, stop seal component 3- 42 and connector 3-43, the stop seal support plate 3-40 is located in stop seal component mounting groove 3-210, and and axle sleeve 3-1 outer wall clearance fit is equipped with the between the bottom surface and stop seal support plate 3-40 of stop seal component mounting groove 3-210 Three rubber seal 3-44；The sealing gland 3-41 is located at the outside of stop seal support plate 3-40, the sealing gland 3- 41 inside is equipped with stop seal component mounting groove 3-410, and stop seal component is installed in dynamic sealing component mounting groove 3-410 3-42, the outer wall palette of the stop seal component 3-42 and axle sleeve 3-1；The connector 3-43 sequentially passes through sealing pressure Lid 3-41 and stop seal support plate 3-40 and air seal room 3-21 is fastenedly connected；The connector uses hex bolts.

Preferably, the air seal that the axle sleeve, sealing shroud, dynamic sealing component and stop seal component are formed is intracavitary close The pressure for sealing gas is greater than 0.01~0.2MPa of pressure of slurries in sealing box of equipment.

Preferably, the junction dynamic sealing mounting portion of the air seal room described in the outer wall of sealing shroud is equipped with circular conical surface, institute It states air inlet and discharge port is arranged on circular conical surface.

Preferably, the sealing shroud is installed from inside to outside by sealing box of equipment, air inlet and exhaust outlet on air seal room Positioned at the outside of sealing box of equipment；The fastener of sealing shroud is connected by close across sealing box of equipment and equipment on the outside of sealing box of equipment Joint sealing interconnecting piece is fastenedly connected, and fastener not extending equipment seal box interconnecting piece.

Preferably, the outer wall of the axle sleeve is equipped with wear-resistant coating, the preferred coat of silicon carbide of wear-resistant coating, the thickness of coating Spend preferably 0.2~1mm.

In actual use, by air inlet 3-23, into air seal chamber 3-9, the stable air of injection pressure, air are logical Stop seal component 3-42 is crossed to enter in sealing box of equipment 1, air pressure be greater than 1 slurry pressure 0.01 of sealing box of equipment~ 0.2MPa, slurries 5 may not flow into air seal chamber 3-9 when guaranteeing pump operating, turn off within 5 minutes after arrestment operating Air pressure rapid drawdown after the air intake control valve 3-25 of air inlet 3-23, air intake control valve 3-25 are closed in air seal chamber 3-9, Stop seal component 3-42 can be tightly compressed on wear-resisting axle sleeve 3-1 by the pressure in slurries 5, play the sealing to slurries 5, It can be flowed out by porus excretorius 3-24 if there is a small amount of slurries flow into air chamber.It can be sealed the disassembly and inspection of device at this time It repairs.

Embodiment 2, referring to Fig. 2, increasing auxiliary on the basis of embodiment 1 to further increase sealing effect Oil enveloping structure；Specifically, the sealing shroud 3-2 includes sealing box of equipment interconnecting piece 3-20, air seal room 3-21, dynamic sealing Mounting portion 3-22 and support portion 3-26；The sealing box of equipment interconnecting piece 3-20 is fixedly mounted on equipment sealing by fastener In the sealing shroud mounting groove 1-1 of 1 inner wall of case, the outer circle wall of sealing box of equipment interconnecting piece is equipped with the second rubber seal 3-8；

Spacer ring 3-27 is being equipped in sealing shroud 3-2 between air seal room 3-21 and support portion 3-26, towards support portion side The spacer ring is equipped with mounting groove 3-28, is equipped with the second dynamic sealing component 3-29 in the mounting groove；

Spring bearing 3-30 is installed on the bearing chamber in the support portion 3-26, is set between the spring bearing and spacer ring There is baffle 3-31；Bearing gland 3-32, the bearing are installed by fastener on the end face of the outer end support portion of spring bearing Gland is equipped with the lubricant passage way 3-33 being connected to bearing chamber, and oil nozzle 3- is installed in the inlet of lubricant passage way on bearing gland 34；Third dynamic sealing component 3-35 is installed between bearing gland and axle sleeve；The first dynamic sealing component and the second dynamic sealing structure Bearing chamber is enclosed oil sealing sealing chamber 3-36 by part；

Air inlet 3-23 and discharge port 3-24, the air inlet are equipped on the air seal room of the outside of sealing box of equipment Air intake control valve 3-25 is installed on mouth；For controlling air inlet；Seal plug 3-26 is installed, for discharging maintenance on the discharge port When the slurries that leak；Stop seal component mounting groove is equipped on the air seal room end face of the sealing shroud in sealing box of equipment 3-27 installs stop seal component 3-4 in stop seal component mounting groove；The second dynamic sealing component and stop seal group Air seal room is enclosed closed air seal chamber 3-9 by part.

In actual use, lubricating oil is filled into bearing chamber first；Then pass through air inlet 3-23 to air seal chamber The stable air of injection pressure in 3-9, air are entered in sealing box of equipment 1 by stop seal component 3-42, air pressure It is greater than 1 0.01~0.2MPa of slurry pressure of sealing box of equipment, slurries 5 may not flow into air seal chamber when guaranteeing pump operating In 3-9, the air intake control valve 3-25 of air inlet 3-23 is turned off within 5 minutes after arrestment operating, air intake control valve 3-25 is closed Stop seal component 3-42 can tightly be compressed on resistance to by the air pressure rapid drawdown in air seal chamber 3-9 afterwards, the pressure in slurries 5 On the axle sleeve 3-1 of mill, the sealing to slurries 5 is played, can be flowed by porus excretorius 3-24 if there is a small amount of slurries flow into air chamber Out.

A kind of air seal blender using above-mentioned gas sealing device is also disclosed in the utility model, referring to Fig. 3, gas Body sealed stirrer includes tank body 6, power unit 7, agitating shaft 8, agitator arm 9, and it is close that gas is equipped between agitating shaft and tank body Seal apparatus.

The utility model by adopting the above technical scheme, has the advantage that

1, structure is simple；Gas-tight sealing eliminate tradition machinery sealing dress sealing ring and spring-compensating structure, zero Part is less and easy for assembly, and human cost and economic cost is greatly saved.

2, easy for installation: only to need for this sealing device to be mounted on equipment rotating shaft, sealing shroud is connect with sealing box of equipment The assembling process entirely sealed is completed, it is convenient and efficient.

3, maintenance cost is low；The vulnerable part of the gas-tight sealing of the utility model is dynamic sealing component and stop seal group Part only needs optionally at most to replace the two accessories, greatly reduces maintenance cost in case of leaking.

4, long service life is equipped with wear-resistant coating in the outer wall of axle sleeve, extends service life, in addition connect sealing shroud Fastener the corrosion and abrasion of slurries in sealing box of equipment are greatly reduced using ecto-entad installation, extend fastener Service life.

5, good seal performance, other than the sealing structure of dynamic sealing component and stop seal component, in sealed jacketed box equipment Rubber seal is equipped between cabinet, between axle sleeve and positioning member, between air seal room end face and stop seal support plate Circle, plays the role of auxiliary seal, effectively prevents leaking, improve sealing performance.

The above is only the preferred embodiment to the utility model, is not made in any form to the utility model Limitation, it is all according to the technical essence of the utility model any simple modification made to the above embodiment, equivalent variations with Modification, is all within the scope of the technical scheme of the utility model.

Claims (10)

1. a kind of rotating machinery gas-tight sealing, including sealing box of equipment, the equipment rotating shaft being installed in sealing box of equipment, Sealing device is equipped between the sealing box of equipment and shaft, it is characterised in that: the sealing device is gas-tight sealing, packet Include the axle sleeve being mounted on equipment rotating shaft, sealing shroud, dynamic sealing component and stop seal component, above-mentioned axle sleeve, sealing shroud, First dynamic sealing component and stop seal component form air seal chamber, and when equipment runs well, air seal is intracavitary close The pressure of gas is sealed greater than the pressure in sealing box of equipment；The axle sleeve connection is mounted on equipment rotating shaft in sealing box of equipment Positioning member, between the axle sleeve outer end face and positioning member end face be equipped with the first rubber seal；It is described to be sealed in equipment The outside of the case axle sleeve connection disassembling ring, the stripping ring are sleeved on the equipment rotating shaft；The sealing shroud passes through tight Firmware is mounted on sealing box of equipment.

2. rotating machinery gas-tight sealing according to claim 1, it is characterised in that: above-mentioned sealing shroud includes setting Standby seal box interconnecting piece, air seal room and dynamic sealing mounting portion；The sealing box of equipment interconnecting piece is fixed by fastener In the sealing shroud mounting groove of installation sealing box of equipment inner wall, the outer circle wall of sealing box of equipment interconnecting piece is equipped with the second rubber Sealing ring；Dynamic sealing mounting groove, the dynamic sealing mounting groove are equipped on the dynamic sealing mounting portion described in the bottom of air seal room The first dynamic sealing component of interior installation；Air inlet and discharge port, institute are equipped on the air seal room of the outside of sealing box of equipment It states and air intake control valve is installed on air inlet；Seal plug is installed on the discharge port；The sealing shroud in sealing box of equipment Air seal room end face is equipped with stop seal component mounting groove, and stop seal group is installed in stop seal component mounting groove Part；The stop seal component and air seal room form air seal chamber.

3. rotating machinery gas-tight sealing according to claim 1, it is characterised in that: above-mentioned sealing shroud includes setting Standby seal box interconnecting piece, air seal room, dynamic sealing mounting portion and support portion；The sealing box of equipment interconnecting piece passes through fastening Part is fixedly mounted in the sealing shroud mounting groove of sealing box of equipment inner wall, and the outer circle wall of sealing box of equipment interconnecting piece is equipped with the Two rubber seal；

Spacer ring is being equipped in sealing shroud between air seal room and support portion, is being equipped with installation towards spacer ring described in support portion side Slot is equipped with the second dynamic sealing component in the mounting groove；

Spring bearing is installed on the bearing chamber in the support portion, baffle is equipped between the spring bearing and spacer ring；It is propping up It supports and bearing gland is installed by fastener on the end face of the outer end support portion of bearing, the bearing gland is equipped with to be connected with bearing chamber Logical lubricant passage way, oil nozzle is installed in the inlet of lubricant passage way on bearing gland；Third is installed between bearing gland and axle sleeve Dynamic sealing component；Bearing chamber is enclosed oil sealing sealing chamber by the first dynamic sealing component and the second dynamic sealing component；

It is equipped with air inlet and discharge port on the air seal room of the outside of sealing box of equipment, air inlet is installed on the air inlet Control valve；Seal plug is installed on the discharge port；It is set on the air seal room end face of the sealing shroud in sealing box of equipment There is stop seal component mounting groove, stop seal component is installed in stop seal component mounting groove；The second dynamic sealing structure Air seal room is enclosed closed air seal chamber by part and stop seal component.

4. rotating machinery gas-tight sealing according to claim 1, it is characterised in that: the stop seal component packet Stop seal support plate, sealing gland, stop seal component and connector are included, it is close that the stop seal support plate is located at parking In sealing assembly mounting groove, and with axle sleeve outer wall clearance fit, stop seal component mounting groove bottom surface and stop seal support Third rubber seal is equipped between plate；The sealing gland is located at the outside of stop seal support plate, the sealing gland Inside is equipped with stop seal component mounting groove, and stop seal component, the stop seal are installed in dynamic sealing component mounting groove The outer wall palette of component and axle sleeve；The connector sequentially passes through sealing gland and stop seal support plate and air seal Room is fastenedly connected.

5. rotating machinery gas-tight sealing according to claim 1, it is characterised in that: the axle sleeve, moves sealing shroud The pressure for the intracavitary sealing gas of air seal that containment member and stop seal component are formed is greater than slurries in sealing box of equipment 0.01~0.2MPa of pressure.

6. rotating machinery gas-tight sealing according to claim 2 or 3, it is characterised in that: in the outer wall of sealing shroud The junction dynamic sealing mounting portion of the air seal room is equipped with circular conical surface, and the air inlet and discharge port are arranged in circular conical surface On.

7. rotating machinery gas-tight sealing according to claim 1, it is characterised in that: the sealing shroud is close by equipment Joint sealing is installed from inside to outside, and the air inlet and exhaust outlet on air seal room are located at the outside of sealing box of equipment；Connect sealing shroud Fastener is fastenedly connected by passing through sealing box of equipment on the outside of sealing box of equipment with sealing box of equipment interconnecting piece, and fastener is not stretched Sealing box of equipment interconnecting piece out.

8. rotating machinery gas-tight sealing according to claim 1, it is characterised in that: the outer wall of the axle sleeve is equipped with Wear-resistant coating.

9. rotating machinery gas-tight sealing according to claim 8, it is characterised in that: the wear-resistant coating is carbonization Silicon coating, the thickness of coating preferably 0.2~1mm.

10. a kind of air seal blender using any gas-tight sealing of the claims 1 to 9.