CN209155579U - Gas seal stirrer - Google Patents

Abstract

The utility model relates to a gas seal stirrer, which comprises a tank body, a power unit, a stirring shaft and a stirring impeller, wherein a sealing device is arranged between the stirring shaft and the tank body; the sealing device is a gas sealing device and comprises a sealing sleeve, a dynamic sealing component and a parking sealing component which are arranged on the stirring shaft, a water stopping ring is also arranged on the stirring shaft in the tank body, and an overhaul sealing gap is arranged between the water stopping ring and the parking sealing component; when the gas sealing device is replaced, the water stop ring moves towards the flange side of the tank body and is attached to the inner conical surface of the flange of the tank body to form an overhauling sealing structure; and the connecting flange is also provided with a dismounting bolt. The utility model has the advantages of simple and compact structure, convenient installation and use, long service life, good sealing performance, high efficiency and the like.

Description

A kind of air seal blender

Technical field

The utility model belongs to mixing plant technical field, more particularly to a kind of air seal blender.

Background technique

Thermoelectricity coal desulfurization system large desulfurization tower serum pot is to guarantee that internal slurries do not deposit, and is needed in tank body lower part Install side-feeding mixer on side wall additional, the output revolving speed that this blender requires is substantially all between 100~300 revs/min, at present The driving device that domestic external agitator is equipped with is speed reducer+electric machine speed regulation or adjusts motor speed, driving dress by belt pulley Setting output revolving speed is definite value, cannot adjust stirring axle speed according to field condition, therefore cannot adapt to the various uses in scene completely It is required that.

Rack and flanged joint are relied between blender and tank wall, realize sealing effect using mechanical seal, it is mechanical Sealing is the quick-wear part inside blender, and when leakage needs online replacement.Currently, the side-feeding mixer used both at home and abroad, Dismounting difficult phenomenon when generally existing replacement mechanical seal.Side-feeding mixer is mounted on tank wall, apart from ground Height has 2 meters or so, needs the scaffold for building 2 meters of height or more from ground to facilitate personnel's operation when replacing mechanical seal.It is right The lifting of drive part is also extremely difficult for large scale equipment, and absorption tower does not have overhead traveling crane outside room, can only by manually with hang Cucurbit operation is filled, this can not only expend a large amount of manpower and material resources, reduce utilization rate of equipment and installations, be also easy in disassembly process to equipment Component damages, and time-consuming serious.

Summary of the invention

The utility model be solve well-known technique present in technical problem and provide a kind of structure it is simple, it is compact, installation Easy to use, long service life, good seal performance, high-efficient air seal blender.

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

A kind of air seal blender is mounted on and stirs including tank body, power unit, the agitating shaft connecting with power unit The agitator arm in shaft end portion is mixed, the agitator arm is located in tank body, and sealing device is equipped between agitating shaft and tank body, described dynamic Power unit is detachably connected on tank flange by connecting flange, and the power output shaft and agitating shaft of the power unit connect It connects；The sealing device is gas-tight sealing, and sealing shroud, dynamic sealing component and parking including being mounted on agitating shaft are close Sealing assembly, above-mentioned sealing shroud, dynamic sealing component and stop seal component form air seal chamber, run well in equipment When, the pressure of air seal chamber is greater than the pressure in tank flange；It is also equipped with seal ring on the agitating shaft in tank body, institute It states and is equipped with maintenance seal clearance between seal ring and stop seal component；The seal ring is equipped with close to stop seal components side to stop Vehicle seal assembly holding tank；When replacing gas-tight sealing, seal ring is mobile towards tank flange side, and in tank flange The conical surface is bonded to form maintenance sealing structure；Demounting bolt is also equipped on the connecting flange, the demounting bolt passes through connection Flange and tank flange outer end face contact.It is multiple to solve structure existing for blender in well-known technique by adopting the above technical scheme Miscellaneous, driving device attachment is more, and output revolving speed cannot be adjusted, and mechanical seal is easy the technical problems such as leakage and replacement difficulty, and originally Utility model structure is simple, does not need installation mechanical seal, eliminates the sealing ring and spring-compensating knot of tradition machinery sealing dress Structure, part is less and easy for assembly, and human cost and economic cost is greatly saved.Improve sealing effect；

In actual use, the air stable to the intracavitary injection pressure of air seal by air inlet, air pass through parking Containment member enters in tank body, and air pressure is greater than tank body 0.005~0.15MPa of slurry pressure, when guaranteeing pump operating Slurries may not flow into that air seal is intracavitary, and the air intake control valve of air inlet, air inlet control are turned off within 5 minutes after arrestment operating Stop seal component can tightly be compressed on resistance to by the intracavitary air pressure rapid drawdown of air seal after valve processed is closed, the pressure in slurries On the agitating shaft of mill, the sealing to slurries is played, can be discharged by porus excretorius if there is a small amount of slurries flow into air chamber；When need It wants after need to only loosening fastening bolt when detachable sealing device, screws demounting bolt, driven under the action of power on demounting bolt top Speed regulating motor, agitating shaft, agitator arm are moved to the left simultaneously, until seal ring be bonded with tank flange inner conical surface to be formed overhaul it is close Seal structure can be sealed the disassembly and maintenance of device.

The utility model can also use following technical measures:

The power unit includes motor, connecting flange；The connecting flange connects Desulfurization tower slurry tank wall tank body On flange；The power output shaft and agitating shaft of the speed regulating motor power unit are separate structure, and are connected by shaft coupling；Even Acting flange is equipped with sealing device manhole.

The power unit includes speed regulating motor, connecting flange and support frame；The connecting flange of the speed regulating motor is logical The removable connection support frame of fastening bolt is crossed, the other end of support frame as described above passes through flanged joint Desulfurization tower slurry tank wall tank On body flange；The power output shaft of the speed regulating motor connects agitating shaft, the institute in support frame by shaft coupling in support frame Shaft coupling is stated close to speed regulating motor side；Above-mentioned power output shaft, shaft coupling, support frame and agitating shaft center be located at it is same On axis；Shaft coupling position is corresponded on support frame to be examined equipped with shaft coupling dismounting mouth, corresponding sealing device position equipped with sealing device Repair hole.

One end of the power output shaft is equipped with for overcoming axial and radial force in the shell of the speed regulating motor First bearing, the other end of power output shaft are equipped with the second bearing for overcoming radial force, wherein the second bearing position In the power output end of power output shaft, first bearing is located at the other end of power output shaft.

The power unit uses belt-type structure, including permanent-magnet synchronous constant-seed motor, the permanent-magnet synchronous constant-seed motor It is fixedly mounted on bracket, and the power output shaft of the permanent-magnet synchronous constant-seed motor is arranged in parallel with agitating shaft, in permanent magnetism Driving wheel is installed on the power output shaft of synchronous constant-seed motor；The outer end of agitating shaft correspond to driving wheel position be equipped with from Driving wheel is equipped with driving belt between the driving wheel and driven wheel；Sealing device position is corresponded on support frame is equipped with sealing dress Set manhole.

Above-mentioned sealing shroud includes tank flange interconnecting piece, air seal room and dynamic sealing mounting portion；The tank body method Blue interconnecting piece is fixedly mounted on tank flange outer end face by fastener, and the outer circle wall of air seal room is equipped with the second rubber Glue sealing ring；Dynamic sealing mounting groove, the dynamic sealing installation are equipped on the dynamic sealing mounting portion described in the bottom of air seal room Dynamic sealing component is installed in slot, plays sealing work by dynamic sealing component and axle sleeve outer wall phase mutual friction in agitating shaft rotation With；It is equipped with air inlet and discharge port on the air seal room of the outside of tank flange, is installed into gas control on the air inlet Valve processed；Seal plug is installed on the discharge port；It is equipped with and stops on the air seal room end face of the sealing shroud in tank flange Vehicle seal assembly mounting groove installs stop seal component in stop seal component mounting groove；The stop seal component and gas It seals room and forms air seal chamber.

Above-mentioned sealing shroud includes tank flange interconnecting piece, air seal room, dynamic sealing mounting portion and support portion；It is described Tank flange interconnecting piece is fixedly mounted on tank flange outer end face by fastener, on the outer circle wall of tank flange interconnecting piece 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；? The outside of the tank body air seal room is equipped with air inlet and discharge port, installs air intake control valve on the air inlet；It is described Seal plug is installed on discharge port；The air seal room end face of the sealing shroud is pacified equipped with stop seal component in tank flange Tankage installs stop seal component in stop seal component mounting groove；The second dynamic sealing component and stop seal component Air seal room is enclosed to closed air seal chamber.

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 agitating shaft clearance fit, stop seal component pacify Third rubber seal is equipped between the bottom surface and stop seal support plate of tankage；The sealing gland is located at stop seal support The outside of plate, the inside of the sealing gland are equipped with stop seal component mounting groove, and installation stops in stop seal component mounting groove Vehicle containment member, the outer wall palette of the stop seal component and agitating shaft；The connector sequentially passes through sealing gland It is fastenedly connected with stop seal support plate and air seal room.

The seal gas pressure of the air seal chamber is greater than 0.01~0.2MPa of pressure of slurries in tank body.

Tank flange inner end described in corresponding seal ring is equipped with sealing inner conical surface；The seal ring is set close to tank flange side There is sealing male cone (strobilus masculinus), the 4th rubber seal is embedded on sealing cone.

The utility model has the advantages and positive effects of: the utility model has following excellent by adopting the above technical scheme Point:

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, and solves the existing knot of blender in well-known technique Structure is complicated, and driving device attachment is more, and output revolving speed cannot be adjusted, and mechanical seal is easy the technical problems such as leakage and replacement difficulty.

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.

7, in use realize frequency control the apparent mixing plant of energy-saving effect, power unit output shaft directly with stir Impeller connection is mixed, blender components is reduced, makes blender axial shortening, reduce agitating shaft because amount of deflection leads to bending deformation Risk, while also making blender vibration, noise etc. every operating parameter reduces, extend agitating shaft service life；Improve equipment Stability and reliability, improve power unit efficiency achieve the purpose that mixing plant energy-saving and emission-reduction.

Detailed description of the invention

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

Fig. 2 is the portion I enlarged drawing in Fig. 1；

Fig. 3 is power output shaft and agitating shaft integral structure schematic diagram in embodiment 1；

Fig. 4 is power unit structure schematic diagram in embodiment 1；

Fig. 5 is 2 structural schematic diagram of the utility model embodiment；

Fig. 6 is the portion II enlarged drawing in Fig. 5；

Fig. 7 is 3 structural schematic diagram of the utility model embodiment；

Fig. 8 is 4 structural schematic diagram of the utility model embodiment；

Fig. 9 is 5 structural schematic diagram of the utility model embodiment.

In figure: 1, tank body；1-1, tank flange；1-10, sealing inner conical surface；1-2, power output shaft；2, power unit；2- 10, speed regulating motor；2-1, connecting flange；2-2, fastening bolt；2-20, permanent-magnet synchronous constant-seed motor；2-21, bracket；2-22, master Driving wheel；2-23, driven wheel；2-24, driving belt；2-3, sealing device manhole；2-30, shaft coupling dismount mouth；2-4, first Bearing；2-5, second bearing；2-6, demounting bolt；2-7, shaft coupling；3, agitating shaft；4, agitator arm；5, gas-tight sealing； 5-1, sealing shroud；5-10, tank flange interconnecting piece；5-11, fastener；5-12, dynamic sealing mounting groove；5-13, circular conical surface；5-2, First dynamic sealing component；5-20, air seal room；5-21, the first rubber seal；5-22, air inlet；5-23, discharge port；5- 24, air intake control valve；5-25, seal plug；5-26, stop seal component mounting groove；5-30, dynamic sealing mounting portion；5-3, parking Seal assembly；5-300, stop seal support plate；5-310, stop seal component mounting groove；5-31, sealing gland；5-32, stop Vehicle containment member；5-33, connector；5-34, the second rubber seal；5-4, air seal chamber；5-40, support portion；5-41, every Ring；5-42, mounting groove；5-43, the second dynamic sealing component；5-44, bearing chamber；5-45, spring bearing；5-46, baffle；5-47, Bearing gland；5-48, lubricant passage way；5-49, oil nozzle；5-50, third dynamic sealing component；5-51, oil sealing sealing chamber；6, sealing Ring；6-1, sealing male cone (strobilus masculinus)；6-2, third rubber seal；6-3, stop seal component holding tank；7, speed reducer；8, dust-proof Cover.

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 to FIG. 4, a kind of air seal blender, including tank body 1, power unit 2 and power The agitating shaft 3 of unit connection, is mounted on the agitator arm 4 of agitating shaft end, the agitator arm is located in tank body 1, agitating shaft Sealing device is equipped between tank body, the power unit 2 is speed regulating motor 2-10, and permanent magnetic speed-adjusting electricity is adopted as in the present embodiment Machine reduces the failure rate of equipment, under the identical mixing effect of identical operating condition, can reach than traditional speed reducer and motor power saving 50%~60%；Stirring axle speed can be adjusted according to field condition, can adapt to the various requirements in scene completely, but adjust the speed electricity Machine 2-10 is also not necessarily limited to this, can also be needed to match according to operating condition ordinary motor, can by speed reducer adjust the speed, belt speed regulation, Frequency control etc.；The connecting flange 2-1 of the speed regulating motor passes through on the removable connection tank flange 1-1 of fastening bolt 2-2, by In by the way of direct connection, the length of agitating shaft can be shortened relative to traditional agitating shaft, it thus can be by the speed regulation The power output shaft 1-2 of motor is structure as a whole with agitating shaft 3, and the motor output shaft of traditional design has been overturned using integral structure By the technical method of two shaft couplings and stirring axis connection, makes blender axial shortening, thereby reduce agitating shaft because of amount of deflection Every operating parameter such as lead to the risk of bending deformation, while also making blender vibration, noise reduce, extends agitating shaft and use Service life is being equipped with sealing device manhole 2-3 close to the side connecting flange 2-1, and operator is direct at sealing device manhole 2-3 Manual operation is carried out, manpower and operating time are saved；The sealing device is gas-tight sealing 5, using the hydraulic reclamation sky into tank The mode of gas realizes that sealing and tradition machinery sealing structure compared are simpler, and when for needing oxidation air in tank, can To greatly promote chemical reaction.Gas-tight sealing includes the sealing shroud 5-1 being mounted on agitating shaft, the first dynamic sealing component 5- 2 and stop seal component 5-3, above-mentioned sealing shroud 5-1, dynamic sealing component 5-2 and stop seal component 5-3 form gas Seal chamber 5-4, when equipment runs well, the pressure of sealing gas is greater than slurries in tank flange in air seal chamber 5-4 Pressure；Slurries may not flow into air seal chamber 5-4 when guaranteeing equipment operation；Also pacify on the agitating shaft 3 in tank body 1 Maintenance seal clearance is equipped with equipped with seal ring 6, between the seal ring and stop seal component, when this gap is for sealing maintenance Prevent the intracorporal slurries of tank from leaking；When replacing gas-tight sealing, seal ring 6 is mobile towards tank flange side, and and tank body Flange inner conical surface is bonded to form maintenance sealing structure, and demounting bolt 2-6, the disassembly are also equipped on the connecting flange 2-1 Bolt passes through connecting flange and tank flange outer end face contact, after only need to loosening fastening bolt 2-2 in detachable sealing device, Demounting bolt is screwed, drives speed regulating motor, agitating shaft, agitator arm to be moved to the left simultaneously under the action of power on demounting bolt top, Until seal ring is bonded to form maintenance sealing structure with tank flange inner conical surface, the disassembly and maintenance of device can be sealed.

Preferably, one end of the power output shaft is equipped with for overcoming axial direction and diameter in the shell of the speed regulating motor To the first bearing 2-4 of power, the preferred deep groove ball bearing of first bearing, angular contact ball bearing, spheric roller bearing, taper roller axis It holds；The other end of power output shaft is equipped with the second bearing 2-5 for overcoming radial force, the preferred cylindrical roller of second bearing Bearing；Wherein the second bearing is located at the power output end of power output shaft, and first bearing is located at the another of power output shaft End.Two groups of bearings are used to fix agitating shaft and guarantee that agitating shaft jitter values in critical field, improve the stabilization of equipment operation Property.

Preferably, above-mentioned sealing shroud 5-1 includes tank flange interconnecting piece 5-10, air seal room 5-20 and dynamic sealing Mounting portion 5-30；The middle position of air seal room is arranged in the tank flange interconnecting piece 5-10, and passes through fastener 5-11 It is fixedly mounted on tank flange 1-1 outer end face, the outer circle wall of air seal room 5-20 is equipped with the first rubber seal 5- 21, prevent slurries from leaking from air seal room and the junction of tank flange；It moves described in the bottom of air seal room 5-20 close It seals mounting portion 5-10 and is equipped with dynamic sealing mounting groove 5-12, the first dynamic sealing component 5- is installed in the dynamic sealing mounting groove 5-12 2, sealing function is played by dynamic sealing component and agitating shaft outer wall phase mutual friction in agitating shaft rotation；In tank flange 1- The 1 outside air seal room is equipped with air inlet 5-22 and discharge port 5-23, installs air intake control valve on the air inlet 5-24, for controlling air inlet；Seal plug 5-25 is installed on the discharge port 5-23, is leaked outside when overhauling and seal for being emitted on Slurries；Stop seal component mounting groove is equipped on the air seal room end face 5-20 of the sealing shroud 5-1 in tank flange 1-1 5-26 installs stop seal component 5-3 in stop seal component mounting groove 5-26；The stop seal component and air seal Room forms air seal chamber 5-4.

Preferably, the stop seal component 5-3 include stop seal support plate 5-300, sealing gland 5-31, parking it is close Component 5-32 and connector 5-33 is sealed, the stop seal support plate 5-300 is located in stop seal component mounting groove 5-26, And with agitating shaft clearance fit；It is set between the bottom surface and stop seal support plate 5-300 of stop seal component mounting groove 5-25 There is the second rubber seal 5-34；The sealing gland 5-31 is located at the outside of stop seal support plate 5-300, the sealing pressure The inside for covering 5-31 is equipped with stop seal component mounting groove 5-310, installs stop seal in stop seal component mounting groove 5-310 Component 5-32, the outer wall palette of the stop seal component 5-32 and agitating shaft 3；The connector 5-33 sequentially passes through close Sealed cover 5-31 and stop seal support plate 5-300 is fastenedly connected with air seal room 5-20, and the connector uses hexagonal spiral shell Bolt.

Preferably, the seal gas pressure of the air seal chamber be greater than tank body in slurries pressure 0.005~ 0015MPa。

Preferably, the junction dynamic sealing mounting portion of the air seal room described in the outer wall of sealing shroud 5-1 is equipped with circular conical surface 5-13, the air inlet 5-22 and discharge port 5-23 are arranged on circular conical surface 5-13.

Preferably, tank flange 1-1 inner end described in corresponding seal ring 6 is equipped with sealing inner conical surface 1-10；The seal ring 6 It is equipped with sealing male cone (strobilus masculinus) 6-1 close to tank flange side, third rubber seal 6-2 is embedded on sealing cone.

Preferably, the seal ring 6 is equipped with stop seal component holding tank 6-3 close to the stop seal side component 5-3, into one Step shortens the length that tank flange extends into tank body.

In actual use, by air inlet 5-22, into air seal chamber 5-4, the stable air of injection pressure, air are logical Stop seal component 5-32 to be crossed to enter in tank body 1, air pressure is greater than 1 0.005~0.15MPa of slurry pressure of tank body, with Guarantee that slurries may not flow into air seal chamber 5-4 when pump operating, turn off air inlet 5-22 in 5 minutes after arrestment operating Air intake control valve 5-24, air pressure rapid drawdown in air seal chamber 5-4 after air intake control valve 5-24 is closed, the pressure in slurries Stop seal component 5-32 can be tightly compressed on wear-resisting agitating shaft 3 by power, the sealing to slurries be played, if there is starching on a small quantity Liquid stream, which enters air chamber, to be discharged by porus excretorius 5-23；Fastening bolt 2-2 need to only be loosened when needing detachable sealing device Afterwards, demounting bolt is screwed, drives speed regulating motor, agitating shaft, agitator arm simultaneously to moving to left under the action of power on demounting bolt top It is dynamic, until seal ring is bonded to form maintenance sealing structure with tank flange inner conical surface, the disassembly and inspection of device can be sealed It repairs.

Embodiment 2 please refers to Fig. 5 and Fig. 6, and in the present embodiment, the power unit includes speed regulating motor 2-10, connection Flange 2-1；On the connecting flange connection Desulfurization tower slurry tank wall tank flange 1-1；The power of the speed regulating motor is defeated Shaft 1-2 and agitating shaft 3 are separate structure, and are connected by shaft coupling 2-7；Connecting flange 2-1 is overhauled equipped with sealing device Hole 2-3.

In order to further increase sealing effect, auxiliary oil enveloping structure is increased on the basis of embodiment 1；Specifically, In the present embodiment, the sealing shroud includes tank flange interconnecting piece 5-10, air seal room 5-20, dynamic sealing mounting portion 5-30 And support portion 5-40；The tank flange interconnecting piece is fixedly mounted on tank flange 1-1 outer end face by fastener 5-11, The outer circle wall of tank flange interconnecting piece is equipped with the first rubber seal 5-21；Air seal room and support portion in sealing shroud Between be equipped with spacer ring 5-41, be equipped with mounting groove 5-42 towards spacer ring described in support portion side, be equipped with second in the mounting groove Dynamic sealing component 5-43；Spring bearing 5-45, the spring bearing are installed on the bearing chamber 5-44 in the support portion 5-40 Baffle 5-46 is equipped between 5-45 and spacer ring 5-41；Pacified on the end face of the outer end support portion of spring bearing 5-45 by fastener Bearing gland 5-47 is filled, the bearing gland is equipped with the lubricant passage way 5-48 being connected to bearing chamber, lubricates on bearing gland Oil nozzle 5-49 is installed the inlet of oil circuit；Third dynamic sealing component 5-50 is installed between bearing gland 5-47 and axle sleeve；Described Bearing chamber is enclosed oil sealing sealing chamber 5-51 by one dynamic sealing component 5-2 and the second dynamic sealing component 5-43；In the outside of tank body The air seal room is equipped with air inlet 5-22 and discharge port 5-23, installs air intake control valve 5-24 on the air inlet, uses In control air inlet；Seal plug 5-25 is installed, for being emitted on the slurries to leak outside when maintenance sealing on the discharge port；Tank body method The air seal room end face of the sealing shroud 5-1 is equipped with stop seal component mounting groove 5-26 in orchid, in stop seal component Stop seal component 5-3 is installed in mounting groove 5-26；The second dynamic sealing component and stop seal component are by air seal room Enclose closed air seal chamber 5-4.Remaining structure is same as Example 1

Embodiment 3 please join Fig. 7, and in the present embodiment, the power unit includes speed regulating motor 2-10, connecting flange 2-1 And support frame 2-11；The connecting flange of the speed regulating motor passes through the removable connection support frame 2-21 of fastening bolt, the branch The other end of support passes through on flanged joint Desulfurization tower slurry tank wall tank flange 1-1；The speed regulation electricity in support frame The power output shaft of machine is by shaft coupling 2-7 connection agitating shaft, and the shaft coupling is close to the side speed regulating motor 2-10 in support frame； Above-mentioned power output shaft 1-2, shaft coupling 2-7, support frame 2-21 and agitating shaft 3 center be located on same axis；Support Shaft coupling position is corresponded on frame is equipped with sealing device manhole 2-3 equipped with shaft coupling dismounting mouth 2-30, corresponding sealing device position. Remaining structure is same as Example 2.

Embodiment 4 please refers to 8, and in the present embodiment, the power unit uses belt-type structure, including permanent-magnet synchronous Constant-seed motor 2-20, the permanent-magnet synchronous constant-seed motor are fixedly mounted on bracket 2-21, and permanent-magnet synchronous constant speed electricity The power output shaft 1-2 of machine is arranged in parallel with agitating shaft 3, is equipped on the power output shaft of permanent-magnet synchronous constant-seed motor actively Take turns 2-22；Driving wheel position is corresponded in the outer end of agitating shaft, driven wheel 2-23 is installed, between the driving wheel and driven wheel Driving belt 2-24 is installed；Sealing device position is corresponded on support frame equipped with sealing device manhole 2-3.Remaining structure with Embodiment 2 is identical

Embodiment 5 please refers to 9, speed reducer can also be connected between above-mentioned permanent-magnet synchronous constant-seed motor and agitating shaft 7.Remaining structure is same as Example 2

It is anti-skidding, safe in order to achieve the purpose that；Dust cover 8 is installed on the outside of the driving wheel and driven wheel, please refers to 8 Hes 9。

In conclusion being solved in well-known technique by adopting the above technical scheme, structure is complicated existing for blender, driving dress It is more to set attachment, output revolving speed cannot be adjusted, and mechanical seal is easy leakage and replaces the technical problems such as difficulty, and the utility model knot Structure is simple, does not need installation mechanical seal, and can realize that the energy-saving effect of frequency control significantly stirs in use and set Standby, power unit output shaft directly couples with agitator arm, reduces blender components, makes blender axial shortening, reduce Agitating shaft leads to the risk of bending deformation because of amount of deflection, while also making blender vibration, noise etc. every operating parameter reduces, and prolongs Long agitating shaft service life；The stability and reliability of equipment are improved, raising power unit efficiency reaches mixing plant energy conservation and subtracts The purpose of row.

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 air seal blender is mounted on stirring including tank body, power unit, the agitating shaft connecting with power unit The agitator arm in shaft end portion, the agitator arm are located in tank body, and sealing device is equipped between agitating shaft and tank body, and feature exists In:

The power unit is detachably connected on tank flange by connecting flange, the power output shaft of the power unit with Stir axis connection；

The sealing device be gas-tight sealing, including be mounted on agitating shaft sealing shroud, the first dynamic sealing component and Stop seal component, above-mentioned sealing shroud, dynamic sealing component and stop seal component form air seal chamber, normal in equipment When operating, the pressure of air seal chamber is greater than the pressure in tank flange；Sealing is also equipped on the agitating shaft in tank body Ring is equipped with maintenance seal clearance between the seal ring and stop seal component；The seal ring is close to stop seal components side Equipped with stop seal component holding tank；When replacing gas-tight sealing, seal ring is mobile towards tank flange side, and and tank body Flange inner conical surface is bonded to form maintenance sealing structure；

Demounting bolt is also equipped on the connecting flange, the demounting bolt passes through connecting flange and connects with tank flange outer end face Touching.

2. air seal blender according to claim 1, it is characterised in that: the power unit includes speed regulating motor, Connecting flange；On the connecting flange connection Desulfurization tower slurry tank wall tank flange；The power output of the speed regulating motor Axis and agitating shaft are separate structure, and are connected by shaft coupling；Connecting flange is equipped with sealing device manhole.

3. air seal blender according to claim 1, it is characterised in that: the power unit speed regulating motor, connection Flange and support frame；The connecting flange of the speed regulating motor passes through the removable connection support frame of fastening bolt, support frame as described above The other end by flanged joint Desulfurization tower slurry tank wall tank flange；The power of the speed regulating motor in support frame Output shaft connects agitating shaft by shaft coupling, and the shaft coupling is close to speed regulating motor side in support frame；Above-mentioned power output Axis, shaft coupling, support frame and agitating shaft center be located on same axis；Shaft coupling position is corresponded on support frame equipped with shaft coupling Device dismounts mouth, corresponding sealing device position is equipped with sealing device manhole.

4. air seal blender according to claim 2 or 3, it is characterised in that: institute in the shell of the speed regulating motor The one end for stating power output shaft is equipped with first bearing for overcoming axial and radial force, the other end installation of power output shaft There is the second bearing for overcoming radial force, wherein the second bearing is located at the power output end of power output shaft, first axle Hold the other end positioned at power output shaft.

5. air seal blender according to claim 1, it is characterised in that: the power unit uses belt-type knot Structure, including permanent-magnet synchronous constant-seed motor, the permanent-magnet synchronous constant-seed motor is fixedly mounted on bracket, and the permanent-magnet synchronous The power output shaft of constant-seed motor is arranged in parallel with agitating shaft, is equipped with master on the power output shaft of permanent-magnet synchronous constant-seed motor Driving wheel；Driving wheel position is corresponded in the outer end of agitating shaft, driven wheel is installed, be equipped between the driving wheel and driven wheel Driving belt；Sealing device position is corresponded on support frame equipped with sealing device manhole.

6. air seal blender according to claim 1, it is characterised in that: above-mentioned sealing shroud includes that tank flange connects Socket part, air seal room and dynamic sealing mounting portion；The tank flange interconnecting piece is fixedly mounted on tank body method by fastener On blue outer end face, the outer circle wall of air seal room is equipped with the second rubber seal；It is moved described in the bottom of air seal room It seals mounting portion and is equipped with dynamic sealing mounting groove, dynamic sealing component is installed in the dynamic sealing mounting groove, in agitating shaft rotation Sealing function is played with axle sleeve outer wall phase mutual friction by dynamic sealing component；In the outside of the tank flange air seal room It is equipped with air inlet and discharge port, air intake control valve is installed on the air inlet；Seal plug is installed on the discharge port；In tank The air seal room end face of the sealing shroud is equipped with stop seal component mounting groove in body flange, installs in stop seal component Slot installs stop seal component；The stop seal component and air seal room form air seal chamber.

7. air seal blender according to claim 1, it is characterised in that: above-mentioned sealing shroud includes that tank flange connects Socket part, air seal room, dynamic sealing mounting portion and support portion；The tank flange interconnecting piece is fixedly mounted on by fastener On tank flange outer end face, the outer circle wall of tank flange 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 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 tank body, is installed into gas control system on the air inlet Valve；Seal plug is installed on the discharge port；It is close to be equipped with parking for the air seal room end face of the sealing shroud in tank flange Sealing assembly mounting groove installs stop seal component in stop seal component mounting groove；The second dynamic sealing component and parking Air seal room is enclosed closed air seal chamber by seal assembly.

8. air seal blender according to claim 1, it is characterised in that: the stop seal component includes that parking is close Support plate, sealing gland, stop seal component and connector are sealed, the stop seal support plate is located at stop seal component peace In tankage, and with agitating shaft clearance fit, be equipped between the bottom surface and stop seal support plate of stop seal component mounting groove Third rubber seal；The sealing gland is located at the outside of stop seal support plate, and the inside of the sealing gland, which is equipped with, stops Vehicle containment member mounting groove, stop seal component mounting groove is interior to install stop seal component, the stop seal component and stirring The outer wall palette of axis；The connector sequentially passes through sealing gland and stop seal support plate and the fastening of air seal room connects It connects.

9. air seal blender according to claim 1, it is characterised in that: the sealing gas pressure of the air seal chamber Power is greater than 0.01~0.2MPa of pressure of slurries in tank body.

10. air seal blender according to claim 1, it is characterised in that: in tank flange described in corresponding seal ring End is equipped with sealing inner conical surface；The seal ring is equipped with sealing male cone (strobilus masculinus) close to tank flange side, is embedded on sealing cone 4th rubber seal.