CN208494052U - Through-shaft type permanent-magnet direct-drive stirring equipment - Google Patents

Abstract

The utility model relates to a through-shaft type permanent-magnet direct-drive stirring device, which comprises a power unit, a stirring shaft, a stirring impeller and a mechanical sealing component; the power unit is a permanent magnet direct-drive synchronous motor; the power output shaft of the permanent magnet direct-drive synchronous motor is a hollow shaft, and a stirring shaft penetrates through the hollow shaft; the permanent magnet direct-drive synchronous motor is detachably connected with a bracket flange, and a dismounting bolt is arranged on the end surface of the bracket flange; the other end of the bracket flange is connected with a slurry tank body of the desulfurizing tower; a stop block is arranged in the central hole of the power output shaft; the stop block is provided with a through hole; the outer end of the stop block is provided with a stop ring; a pressure plate is arranged at the outer end of the power output shaft; a fastening bolt is arranged in a central hole of the power output shaft, and the fastening bolt sequentially penetrates through the pressing plate and the stop block to be connected with the stirring shaft through threads. The utility model discloses reduce power unit equipment and annex, reduce energy transfer's consumption, improve energy utilization, realize agitated vessel energy saving and emission reduction's purpose, improve equipment's stability and reliability, the easy access improves maintenance efficiency.

Description

A kind of shaft type permanent magnet direct-drive mixing plant

Technical field

The utility model belongs to mixing plant manufacturing technology field, sets more particularly to a kind of stirring of shaft type permanent magnet direct-drive It is standby.

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 type mixing plant on side wall additional, the output revolving speed that this mixing plant requires substantially all between 100~300 revs/min, The driving device that mixing plant is equipped with both at home and abroad at present adjusts motor speed for speed reducer+electric machine speed regulation or by belt pulley, It is definite value that driving device, which exports revolving speed, cannot adjust stirring axle speed according to field condition, therefore cannot be adapted to completely live each Kind requirement.Existing agitating device has attachment more, and output revolving speed cannot be adjusted, and energy loss is big, stirrer-driven portion Dividing maintenance cumbersome, needs replacing belt depending on abrasion condition within 2~6 months, every 1 month needs check filling lubricating oil etc., Waste a large amount of manpower and material resources.

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 small in size, subtract Few power unit apparatus and attachment reduce the consumption of energy transmission, improve capacity usage ratio, improve the stability of equipment and reliable Property, power unit working efficiency is improved, realizes the purpose shaft type permanent magnet direct-drive mixing plant of mixing plant energy-saving and emission-reduction.

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

A kind of shaft type permanent magnet direct-drive mixing plant, including power unit, the agitating shaft being connect with power unit, paddle Wheel, the agitator arm are located in Desulfurization tower slurry tank body, and mechanical seal group is equipped between agitating shaft and Desulfurization tower slurry tank body Part, it is characterised in that: the power unit is permanent magnet direct-drive synchronous motor, and the shell flange of the permanent magnet direct-drive synchronous motor is logical Cross one end of the removable connecting bracket flange of fastening bolt；Disassembly spiral shell is equipped on the bracket flange end face of connection body flange end Bolt；The side wall of the other end connection Desulfurization tower slurry tank body of the bracket flange；The power of the permanent magnet direct-drive synchronous motor is defeated Shaft is hollow shaft, and one end of the power output shaft is equipped with for overcoming axial direction in the shell of the permanent magnet direct driving motor With the first bearing of radial force, the other end of power output shaft is equipped with the second bearing for overcoming radial force, wherein described Second bearing is located at the power output end of power output shaft, and first bearing is located at the other end of power output shaft；The agitating shaft The other end across bracket flange protrudes into Desulfurization tower slurry tank body；It is equipped on the agitating shaft in Desulfurization tower slurry tank body Agitator arm；Agitating shaft is coated in hollow shaft, the outer end face of the agitating shaft is equipped with threaded hole；The power output shaft Centre bore in block is installed；Through-hole corresponding with transmission axle threaded hole is equipped on the block in the axial direction；In block Outer end described in centre bore inner wall on baffle ring is installed；Pressure is equipped in the outer end of the power output shaft of permanent magnet direct-drive synchronous motor Plate, the pressing plate are equipped with through-hole；The outer diameter of the pressing plate is greater than internal diameter hollow in power output shaft；In power output shaft Fastening bolt is equipped in centre bore, the fastening bolt sequentially passes through, pressing plate, block are threadedly coupled with the threaded hole of agitating shaft； Mechanical sealing assembly position is corresponded on bracket flange equipped with mechanical sealing assembly access hole.

The utility model can also use following technical measures:

The outer wall of the bracket flange is symmetrically arranged with the mounting base for fixing dust cover and/or bottom bracket, described Mounting base is equipped with mounting hole.

At least provided with CAN, RS485, PROFBUS with peripheral hardware communication on the controller of the permanent magnet direct-drive synchronous motor The communication interface of DP.

The outer diameter that the ring flange of the side wall of Desulfurization tower slurry tank body is connected in the ring flange at the bracket flange both ends is greater than Equal to the ring flange of connection permanent magnet direct driving motor.

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

1, the utility model substitutes traditional mechanical actuation device using " permanent magnet direct-drive synchronous motor ", makes transmission system knot Structure simplifies, and efficiency improves, easy for installation, and manually no longer needs to carry out daily maintenance, maintenance, to save a large amount of manpower Material resources cost alleviates the environmental pollution in production process.The motor has the following characteristics that

1.1 is energy-efficient: the permanent magnet direct-drive synchronous motor energy consumption that the utility model uses reaches international IE4 and (is higher than country Level-one energy consumption standard), system effectiveness can be increased substantially compared with conventional drive system, save a large amount of electric energy.

1.2 starting torques are big, and overload capacity is strong: the starting torque of traditional mixing plant is usually the 80% of nominal torque, Cannot achieve system full load starting, and the utility model the use of the starting torque of permanent magnet direct-drive synchronous motor is nominal torque 220%, when operating condition need it is fully loaded or overload start when, can across-the-line starting, avoid motor caused by due to stall, overload from damaging It is bad, while greatly alleviating the labor intensity of operator.

1.3 starting protection abilities are strong: moment, which reaches, when traditional mixing plant starts needs revolving speed, and impact force is big, is easy damage Bad electric appliance or part of appliance, the utility model are small tortuosity startings, are slowly increased to need revolving speed from zero speed, avoid because of impact Power gives greatly damage caused by equipment.

1.4 systems are non-maintaining: since the utility model does not need retarder, mechanical soft lifting device, therefore in practical application In no replacement is required gear oil, overhaul reduction gearbox, saved use cost, reduce maintenance workload, later maintenance only needs timing To motor bearings oiling 1 time, realize really non-maintaining.

1.5 drivings are intelligent: the utility model supports the multiple communication interfaces such as CAN, RS485, PROFBUS DP simultaneously , it can be achieved that communicating with host computer, operation data can be sent to ground maneuvers by realization multiple devices centralized control operation for access Unattended, long-range to control, on-line monitoring, fault diagnosis are realized in room.

2, the permanent magnet direct-drive synchronous motor of the utility model uses hollow shaft structure, while matching used agitating shaft uses Axis structure, substitution carry out the connection with Power Available Shaft using shaft coupling, coupling assembly, and it is some special to be more suitably applied to Mixing plant；In addition, the space occupied such as shaft coupling, shaft coupling can be saved using axis structure using agitating shaft, shorten The length of this kind of cantilevered agitating shaft improves bearing strength, improves the stability of mixing plant operation；Stirring is also reduced simultaneously The difficulty of processing of axis, prolongs the service life, while noise, vibration, energy consumption minimize；Agitating shaft uses axis structure can be with Shorten bracket flange axial length, reduce the weight of cantilever, improve the stability of operation, but also can reduce manufacture at This.

3, one end of the utility model permanent magnet direct-drive synchronous motor internally-powered output shaft is equipped with for overcoming axial direction and diameter To the first bearing of power, the other end of power output shaft is equipped with the second bearing for overcoming radial force, wherein described second Bearing is located at the power output end of power output shaft, and first bearing is located at the other end of power output shaft, and guarantee motor in this way is defeated The service precision and service life of shaft improve the stability of equipment operation.

Detailed description of the invention

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

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

Fig. 3 is bracket flange structural schematic diagram.

In figure: 1, power unit；1-1, power output shaft；1-2, first bearing；1-3, second bearing；1-4, shell method It is blue；2, agitating shaft；2-1, threaded hole；2-2, sealing cup positioning table；3, agitator arm；3-1, guide vane plate；4, mechanical seal group Part；4-1, mechanically-sealing apparatus；4-2, seal receptacle；4-3, sealing cup；4-4, fastener；4-5, groove；4-6, sealing ring；5, Bracket flange；5-1, ring flange；5-2, ring flange；5-3, mechanical sealing assembly access hole；5-4, mounting base；5-5, mounting hole； 6, block；7, baffle ring；8, pressing plate；9, fastening bolt；10, demounting bolt；11, Desulfurization tower slurry tank body.

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:

It please refers to Fig. 1 and Fig. 2, a kind of shaft type permanent magnet direct-drive mixing plant, including power unit 1 and power unit connects Agitating shaft 2, the agitator arm 3 connect, the agitator arm are located in Desulfurization tower slurry tank body 11, agitating shaft 2 and Desulfurization tower slurry Mechanical sealing assembly 4 is equipped between tank body, the power unit is permanent magnet direct-drive synchronous motor, the permanent magnet direct-drive synchronous motor Shell flange 1-4 pass through one end of the removable connecting bracket flange 5 of fastening bolt；In the bracket flange of connection body flange end 5 end faces are equipped with demounting bolt 10；The side wall of the other end connection Desulfurization tower slurry tank body of the bracket flange；The permanent magnetism is straight The power output shaft 1-1 for driving synchronous motor is hollow shaft, the power output shaft in the shell of the permanent magnet direct driving motor One end is equipped with the first bearing 1-2 for overcoming axial and radial force, the preferred deep groove ball bearing of first bearing, angular contact ball axis It holds, spheric roller bearing etc., tapered roller bearing etc.；The other end of power output shaft is equipped with second for overcoming radial force Bearing 1-3, the preferred cylinder roller bearing of second bearing, wherein the second bearing is located at the power output of power output shaft 1-1 End, first bearing 1-2 are located at the other end of power output shaft 1-2；The other end that the agitating shaft 2 passes through bracket flange protrudes into de- In sulphur tower slurries tank body 4；Agitator arm 3 is installed on the agitating shaft in Desulfurization tower slurry tank body；It is installed in hollow shaft There is agitating shaft 2, the outer end face of the agitating shaft 2 is equipped with threaded hole 2-1；Installation in the centre bore of the power output shaft 1-1 There is block 6；Through-hole corresponding with transmission axle threaded hole is equipped on the block in the axial direction；In described in the outer end of block 6 Baffle ring 7 is installed on the inner wall in heart hole；Pressing plate 8, the pressure are equipped in the outer end of the power output shaft of permanent magnet direct-drive synchronous motor Plate 8 is equipped with through-hole；The outer diameter of the pressing plate 8 is greater than internal diameter hollow in power output shaft；At the center of power output shaft 1-1 Fastening bolt 9 is equipped in hole, the fastening bolt sequentially passes through, pressing plate, block are threadedly coupled with the threaded hole of agitating shaft；Bracket Mechanical sealing assembly position is corresponded on flange 5 equipped with mechanical sealing assembly access hole 5-3.

Specific mechanical seal replacing step makes firstly, the demounting bolt 10 on the ring flange 5-1 of bracket flange is screwed Permanent magnet direct-drive synchronous motor is separated with bracket flange, while agitating shaft is with the transverse shifting of permanent magnet direct-drive synchronous motor, in movement Agitating shaft drives the gap between sealing cup and seal receptacle to gradually decrease in the process, until compressing sealing ring 4-6 realizes sealing, Prevent the intracorporal slurries of Desulfurization tower slurry tank from leaking；In this case, fastening bolt 9 is removed, pressing plate 8,7 and of baffle ring are successively taken out Block 6 disassembles permanent magnet direct-drive synchronous motor, the maintenance and replacement of mechanical sealing assembly is then carried out, after the completion of replacement Normal operation can be realized in reset.

The utility model can also use following technical measures:

The outer wall of the bracket flange 5 is symmetrically arranged with the mounting base 5-1 for fixing dust cover and/or bottom bracket, The mounting base is equipped with mounting hole 5-10.

At least provided with CAN, RS485, PROFBUS with peripheral hardware communication on the controller of the permanent magnet direct-drive synchronous motor The communication interface of DP.It can be achieved to communicate with host computer, realize the operation of multiple devices centralized control, operation data can be sent to ground Unattended, long-range to control, on-line monitoring, fault diagnosis are realized in face control room.

The outer diameter that the ring flange of the side wall of Desulfurization tower slurry tank body is connected in the ring flange at the bracket flange both ends is greater than Equal to the ring flange of connection permanent magnet direct driving motor.The bearing capacity for improving bracket flange in this way improves permanent magnet direct driving motor operation Stability, guarantee that the center of above-mentioned power output shaft and agitating shaft is located on same axis.

The preferably such as flowering structure of mechanical sealing assembly described in the present embodiment, referring to Fig. 3, the mechanical sealing assembly 4 wraps Sealing device 4-1, seal receptacle 4-2 and sealing cup 4-3 are included, above-mentioned sealing device can use mechanically-sealing apparatus, Can use other sealing devices in the prior art, the preferred mechanically-sealing apparatus of the present embodiment, mechanically-sealing apparatus it is specific Structure and sealing principle belong to the prior art, herein without repeating；Mechanical seal dress 4-1 setting in bracket flange, And be fixedly mounted on by fastener 4-4 on the inner face of bracket flange 5, in the stirring of Desulfurization tower slurry tank body and bracket flange Shaft mounting hole is equipped with seal receptacle 4-2, and the seal receptacle is being equipped with conical seal (contact) face towards Desulfurization tower slurry tank body direction；It is described Sealing cup 4-3 is sleeved on agitating shaft 2, and the agitating shaft is equipped with sealing cup positioning table 2-2；The sealing cup 4-3 It is equipped with the taper fit face of seal receptacle at least provided with groove 4-5 together, the groove is interior to be equipped with sealing ring 4-6；Work as needs When overhauling mechanical sealing assembly, keeps agitating shaft mobile towards power unit direction by an external force, seal the sealing ring of cup It is bonded with the conical seal (contact) face of seal receptacle, forms maintenance sealing structure, this mechanical seal structure, especially suitable for side mixing plant In long cantilever axis, dielectric corrosion and abrasion, the features such as stress is complicated, by long-term leakage test, it was demonstrated that this sealing The high reliability of device and long-life.The mechanically-sealing apparatus can also be bought in the market according to actual needs suitable for such The other machinery sealing device of operating condition.

Preferably, the agitator arm 3 is that the three leaves distortion streamline vane hot investment casting with guide vane plate 3-1 forms, Wear-resistant rotproofness is strong, and stirring efficiency is high, saves power of motor, and the flow that unit power generates is big, stirs in very large range Uniformly.Preferably, the leaf curling angle of the agitator arm 3 is between 10~50 degree, to guarantee in minimum power of agitator It is lower to obtain best mixing effect.The installation inner hole precision of the agitator arm 30 uses numerical control boring cutter between 0~0.02mm To guarantee machining accuracy.

By adopting the above technical scheme, it has the advantage, that

1, the utility model substitutes traditional mechanical actuation device using " permanent magnet direct-drive synchronous motor ", makes transmission system knot Structure simplifies, and efficiency improves, easy for installation, and manually no longer needs to carry out daily maintenance, maintenance, to save a large amount of manpower Material resources cost alleviates the environmental pollution in production process.The motor has the following characteristics that

1.1 is energy-efficient: the permanent magnet direct-drive synchronous motor energy consumption that the utility model uses reaches international IE4 and (is higher than country Level-one energy consumption standard), system effectiveness can be increased substantially compared with conventional drive system, save a large amount of electric energy.

1.2 starting torques are big, and overload capacity is strong: the starting torque of traditional mixing plant is usually the 80% of nominal torque, Cannot achieve system full load starting, and the utility model the use of the starting torque of permanent magnet direct-drive synchronous motor is nominal torque 220%, when operating condition need it is fully loaded or overload start when, can across-the-line starting, avoid motor caused by due to stall, overload from damaging It is bad, while greatly alleviating the labor intensity of operator.

1.3 starting protection abilities are strong: moment, which reaches, when traditional mixing plant starts needs revolving speed, and impact force is big, is easy damage Bad electric appliance or part of appliance, the utility model are small tortuosity startings, are slowly increased to need revolving speed from zero speed, avoid because of impact Power gives greatly damage caused by equipment.

1.4 systems are non-maintaining: since the utility model does not need retarder, mechanical soft lifting device, therefore in practical application In no replacement is required gear oil, overhaul reduction gearbox, saved use cost, reduce maintenance workload, later maintenance only needs timing To motor bearings oiling 1 time, realize really non-maintaining.

1.5 drivings are intelligent: the utility model supports the multiple communication interfaces such as CAN, RS485, PROFBUS DP simultaneously , it can be achieved that communicating with host computer, operation data can be sent to ground maneuvers by realization multiple devices centralized control operation for access Unattended, long-range to control, on-line monitoring, fault diagnosis are realized in room.

2, the permanent magnet direct-drive synchronous motor of the utility model uses hollow shaft structure, while matching used agitating shaft uses Axis structure, substitution carry out the connection with Power Available Shaft using shaft coupling, coupling assembly, and it is some special to be more suitably applied to Mixing plant；In addition, the space occupied such as shaft coupling, shaft coupling can be saved using axis structure using agitating shaft, shorten The length of this kind of cantilevered agitating shaft improves bearing strength, improves the stability of mixing plant operation；Stirring is also reduced simultaneously The difficulty of processing of axis, prolongs the service life, while noise, vibration, energy consumption minimize；Agitating shaft uses axis structure can be with Shorten bracket flange axial length, reduce the weight of cantilever, improve the stability of operation, but also can reduce manufacture at This.

3, one end of the utility model permanent magnet direct-drive synchronous motor internally-powered output shaft is equipped with for overcoming axial direction and diameter To the first bearing of power, the other end of power output shaft is equipped with the second bearing for overcoming radial force, wherein described second Bearing is located at the power output end of power output shaft, and first bearing is located at the other end of power output shaft, and guarantee motor in this way is defeated The service precision and service life of shaft improve the stability of equipment operation.

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 (4)

1. a kind of shaft type permanent magnet direct-drive mixing plant, including power unit, the agitating shaft being connect with power unit, paddle Wheel, the agitator arm are located in Desulfurization tower slurry tank body, and mechanical seal group is equipped between agitating shaft and Desulfurization tower slurry tank body Part, it is characterised in that: the power unit is permanent magnet direct-drive synchronous motor, and the shell flange of the permanent magnet direct-drive synchronous motor is logical Cross one end of the removable connecting bracket flange of fastening bolt；Disassembly spiral shell is equipped on the bracket flange end face of connection body flange end Bolt；The side wall of the other end connection Desulfurization tower slurry tank body of the bracket flange；The power of the permanent magnet direct-drive synchronous motor is defeated Shaft is hollow shaft, and one end of the power output shaft is equipped with for overcoming axial direction in the shell of the permanent magnet direct driving motor With the first bearing of radial force, the other end of power output shaft is equipped with the second bearing for overcoming radial force, wherein described Second bearing is located at the power output end of power output shaft, and first bearing is located at the other end of power output shaft；The agitating shaft The other end across bracket flange protrudes into Desulfurization tower slurry tank body；It is equipped on the agitating shaft in Desulfurization tower slurry tank body Agitator arm；Agitating shaft is coated in hollow shaft, the outer end face of the agitating shaft is equipped with threaded hole；The power output shaft Centre bore in block is installed；Through-hole corresponding with transmission axle threaded hole is equipped on the block in the axial direction；In block Outer end described in centre bore inner wall on baffle ring is installed；Pressure is equipped in the outer end of the power output shaft of permanent magnet direct-drive synchronous motor Plate, the pressing plate are equipped with through-hole；The outer diameter of the pressing plate is greater than internal diameter hollow in power output shaft；In power output shaft Fastening bolt is equipped in centre bore, the fastening bolt sequentially passes through, pressing plate, block are threadedly coupled with the threaded hole of agitating shaft； Mechanical sealing assembly position is corresponded on bracket flange equipped with mechanical sealing assembly access hole.

2. shaft type permanent magnet direct-drive mixing plant according to claim 1, it is characterised in that: the outer wall of the bracket flange It is symmetrically arranged with the mounting base for fixing dust cover and/or bottom bracket, the mounting base is equipped with mounting hole.

3. shaft type permanent magnet direct-drive mixing plant according to claim 1, it is characterised in that: the permanent magnet direct-drive synchronizes electricity At least provided with the communication interface of CAN, RS485, PROFBUS DP with peripheral hardware communication on the controller of machine.

4. shaft type permanent magnet direct-drive mixing plant according to claim 1, it is characterised in that: the bracket flange both ends The outer diameter that the ring flange of the side wall of Desulfurization tower slurry tank body is connected in ring flange is more than or equal to the flange of connection permanent magnet direct driving motor Disk.