A kind of frequency conversion peripheral pump
Technical field
The invention belongs to pump technical field, relate to a kind of frequency conversion peripheral pump.
Background technique
Peripheral pump is exactly a kind of high-pressure service pump, and by the active force of rotary blade to liquid, in liquid moving direction, liquid transmits kinetic energy to realize carrying liquid with momentum.Peripheral pump forms primarily of impeller, the pump housing and pump cover, impeller is a disk, blade is circumferentially radially evenly distributed, ring runner is formed between the pump housing and impeller, suction port and exhaust port are all at the excircle place of impeller, there is dividing plate between suction port and exhaust port, thus suction port and exhaust port are kept apart.When the impeller is rotated, under the influence of centrifugal force, in impeller, the peripheral velocity of liquid is greater than the peripheral velocity of liquid in runner, again owing to following impeller to advance from suction port to exhaust port liquid, the synthesis result of these two kinds motions, just makes liquid produce and turns to identical " longitudinal vortex " with impeller.
The wheel rotation of common peripheral pump is by driven by motor, in peripheral pump running, its flow is unstable, its output power of peripheral pump of usual employing common electric machine is fixing, cause to regulate the revolution of motor to realize according to actual conditions the output power regulating peripheral pump in actual use, cause the efficiency of peripheral pump lower; In order to sort this problem out, current peripheral pump adopts variable-frequency motor as power source, the output power of peripheral pump is regulated by variable-frequency motor, in variable-frequency motor, frequency variator is directly fixed on the casing of motor, motor operationally has vibration, can impact the electronic parts and components in frequency variator, causing trouble; Frequency variator easily comes to harm as the electronic product of fragility, and the thick and heavy metal shell of main employing is protected frequency variator at present, and this causes cost of production significantly to rise.
Summary of the invention
The object of the invention is to there are the problems referred to above for existing technology, propose a kind of frequency conversion peripheral pump, the present invention solve technical problem be improve frequency conversion peripheral pump efficiency and make frequency conversion peripheral pump stable.
Object of the present invention realizes by following technical proposal:
A kind of frequency conversion peripheral pump, it is characterized in that, comprise base, be fixed on the pump housing on base and motor, the described pump housing comprises and is vertically fixed on intake pipe on base and outlet conduit and the pump case between intake pipe and outlet conduit, described motor is positioned at pump case side, described base is also fixed with compensator, described compensator is positioned at the side of motor near outlet conduit, the casing of described motor is fixed with the frequency variator that can regulate motor speed size, described frequency variator be fixed on the top of the casing of motor and the shaft axis place vertical plane being positioned at motor near the side of compensator.
Motor can drive the wheel rotation in pump case that water is flowed through pump case from intake pipe and pump into outlet conduit; Frequency variator can regulate the rotating speed of motor according to actual service condition, also just can regulate the output power of frequency conversion peripheral pump, improve the utilization efficiency of frequency conversion peripheral pump, save electric energy, improve efficiency, reduced user cost; Frequency variator is in compensator, space between motor and outlet conduit, can first be contacted with compensator or outlet conduit when the situation such as clashing into, reduce the injury to frequency variator, protect the use safety of frequency variator, by rational deployment's frequency variator and the position relationship between motor, compensator and the pump housing reduce that frequency variator comes to harm may, without the need to adopting additional protective casing, reduce cost; After current pump into outlet conduit, the relative intake pipe of its flowing velocity can increase, there is certain impact power, frequency variator is arranged on and can increases the overall weight of base in this side near intake pipe side, the vibration of base can be reduced, improve the stability that frequency conversion peripheral pump runs, reduce noise when frequency conversion peripheral pump runs.
In above-mentioned frequency conversion peripheral pump, described motor is horizontally disposed with, the casing of described motor cylindrically, the top of the casing of described motor and the side being positioned at the shaft axis place vertical plane of motor has attachment face, described attachment face has protruding fitting seat, described fitting seat has some mounting holes.On the casing of motor, non-attachment face position is all fixed with radiating fin, and fitting seat is used for fixing frequency variator.
In above-mentioned frequency conversion peripheral pump, described frequency variator comprises set casing and cover plate, described set casing comprises the housing with lock chamber and the leaning seat being positioned at housing bottom, described cover plate can cover on housing, the bottom of described housing have can with fitting seat fit against butting section, described butting section has and above-mentioned mounting hole fixed hole one to one, described leaning seat can with the attachment face on the casing of motor fit against.Butting section is positioned at the front end of housing bottom, set casing is fixed by the casing of butting section and motor, by the casing of leaning seat and motor fit against, the electronic parts and components of frequency variator are fixed on the one end away from butting section in lock chamber, because the casing of leaning seat and motor is non-locked fixing, therefore the housing Relative Vibration be connected with leaning seat is less, make the also minimizing that in frequency variator, electronics unit device element is vibrated, reduce the probability of electronics unit device element fault, improve the working life of frequency variator.
In above-mentioned frequency conversion peripheral pump, described leaning seat comprises some transverse slats be arranged in parallel and is positioned at the stringer board at transverse slat two ends, described transverse slat is vertical with the shaft axis of motor, the lower end of described transverse slat has the concave surface of circular arc, described concave surface can with the attachment face on the casing of motor fit against, the outer side surface of described stringer board flushes with the outer side wall of housing, the attachment face on the lower end of described stringer board and the casing of motor fit against.This structure can make stable the locating with the casing of motor of frequency variator energy, vibration is had when motor runs, because the casing of leaning seat and motor is non-locked fixing, the vibration of the casing of motor cannot totally tansitive to leaning seat, also the vibration of frequency variator is just made to reduce, the also minimizing that in frequency variator, electronics unit device element is vibrated, reduces the probability of electronics unit device element fault, improves the working life of frequency variator.
In above-mentioned frequency conversion peripheral pump, described leaning seat also comprises stiffening plate, described stiffening plate is between transverse slat, stiffening plate comprises two pieces of angles stiffening plate portion in obtuse angle, the lower end in two pieces of described stiffening plate portions all has the concave surface of circular arc, concave surface in two pieces of described stiffening plate portions is oppositely arranged and smooth connection, the concave surface in two pieces of described stiffening plate portions can with the attachment face on the casing of motor fit against.Owing to there is angle between two pieces of stiffening plate portions, occur that the direction acting on two stiffening plate portion upper recess surface when swinging is contrary at housing, there is locked situation, stiffening plate is had and can prevent frequency variator from occurring the situation of rotating around the circumference of motor, frequency variator can be prevented to be connected with the casing of motor by leaning seat when motor rotation one section be there is situation about swinging, makes frequency variator to be firmly fixed on the casing of motor.
In above-mentioned frequency conversion peripheral pump, described fitting seat has the intercommunicating pore be communicated with the chassis cavity of motor, the butting section of described housing has the cable-through hole be communicated with intercommunicating pore.Electronic parts and components in frequency variator and the connecting line between motor are directly connected through cable-through hole and intercommunicating pore, and connecting line is positioned at frequency variator and motor internal, protects the safety of connecting line.
In above-mentioned frequency conversion peripheral pump, the opening of the lock chamber in described housing is towards oblique upper, and described cover plate tilt cover is combined on housing, and the angle between the shaft axis place vertical plane of described cover plate and motor is 30 ° ~ 60 °.Cover plate has display Folding-Screen, this structure can ensure the mounting point of frequency variator, makes frequency variator receive the protection of the pump housing and compensator, also can ensure that the content showing display on Folding-Screen can be clearly in sight.
In above-mentioned frequency conversion peripheral pump, the upper end of described cover plate is positioned at the below of the upper end of compensator; The upper end of described cover plate is positioned at the below of the upper end of pump case.This structure makes in the space of frequency variator between compensator and pump case, first can contact with compensator or pump case, reducing the injury to frequency variator, protecting frequency variator when the situation such as being clashed into.
Compared with prior art, this frequency conversion peripheral pump has and improves frequency conversion peripheral pump efficiency, reduces user cost; Protect frequency variator by rational deployment to escape injury simultaneously, reduce the vibration that frequency variator is subject to, improve the advantage of frequency conversion peripheral pump operation stability.
Accompanying drawing explanation
Fig. 1 is the perspective view of this frequency conversion peripheral pump.
Fig. 2 is the plan structure schematic diagram of this frequency conversion peripheral pump.
Fig. 3 is the backsight structural representation of this frequency conversion peripheral pump.
Fig. 4 is the schematic rear view of this motor and frequency variator annexation.
Fig. 5 is the schematic perspective view of this motor and frequency variator annexation.
Fig. 6 is the perspective view of this motor.
Fig. 7 is the perspective view of this set casing and cover plate.
In figure, 1, base; 2, the pump housing; 21, intake pipe; 22, outlet conduit; 23, pump case; 3, motor; 31, attachment face; 32, radiating fin; 33, fitting seat; 331, intercommunicating pore; 332, mounting hole; 4, compensator; 5, frequency variator; 5a, set casing; 51, housing; 511, butting section; 511a, cable-through hole; 511b, fixed hole; 52, leaning seat; 521, transverse slat; 522, stringer board; 523, stiffening plate; 523a, stiffening plate portion; 524, concave surface; 5b, cover plate.
Embodiment
Be below specific embodiments of the invention and by reference to the accompanying drawings, technological scheme of the present invention is further described, but the present invention be not limited to these embodiments.
The present embodiment as shown in Figures 1 to 7, frequency conversion peripheral pump comprises base 1, be fixed on the pump housing 2 on base 1 and motor 3, the pump housing 2 comprises and is vertically fixed on intake pipe 21 on base 1 and outlet conduit 22 and the pump case between intake pipe 21 and outlet conduit 22 23, motor 3 is positioned at pump case 23 side, motor 3 can drive the wheel rotation in pump case 23 that water is flowed through pump case 23 from intake pipe 21 and pump into outlet conduit 22, base 1 is also fixed with compensator 4, compensator 4 is positioned at the side of motor 3 near outlet conduit 22, the casing of motor 3 is fixed with the frequency variator 5 that can regulate motor 3 rotating speed size, frequency variator 5 be fixed on the top of the casing of motor 3 and the shaft axis place vertical plane being positioned at motor 3 near the side of compensator 4, frequency variator 5 is positioned at compensator 4, in space between motor 3 and outlet conduit 22, the upper end of cover plate 5b is positioned at the below of the upper end of compensator 4 and the upper end of pump case 23.
The casing of motor 3 cylindrically, the top of the casing of motor 3 and the side being positioned at the shaft axis place vertical plane of motor 3 have the attachment face 31 for circular arc, on the casing of motor 3, non-attachment face 31 position is all fixed with radiating fin 32, attachment face 31 has protruding fitting seat 33 near casing one end of motor 3, fitting seat 33 has some mounting holes 332.Corresponding, frequency variator 5 comprises set casing 5a and cover plate 5b, set casing 5a comprises the housing 51 with lock chamber and the leaning seat 52 be positioned at bottom housing 51, cover plate 5b can cover on housing 51, the bottom of housing 51 have can with fitting seat 33 fit against butting section 511, butting section 511 is positioned at the front end bottom housing 51, butting section 511 has and above-mentioned mounting hole 332 fixed hole 511b one to one, leaning seat 52 can fit with the attachment face 31 on the casing of motor 3 against, set casing 5a is fixed on fitting seat 33 by bolt through fixed hole 511b and mounting hole 332, fitting seat 33 has the intercommunicating pore 331 be communicated with the chassis cavity of motor 3, the butting section 511 of housing 51 has the cable-through hole 511a be communicated with intercommunicating pore 331.
The opening of the lock chamber of housing 51 is towards oblique upper; cover plate 5b tilt cover is combined on housing 51; angle between the shaft axis place vertical plane of cover plate 5b and motor 3 is 30 ° ~ 60 °; as preferably; in the present embodiment, this angle is 45 °, cover plate 5b has display Folding-Screen, and this structure can ensure the mounting point of frequency variator 5; make frequency variator 5 receive the protection of the pump housing 2 and compensator 4, also can ensure that the content showing display on Folding-Screen can be clearly in sight.
Leaning seat 52 comprises some transverse slats 521 be arranged in parallel and the stringer board 522 being positioned at transverse slat 521 two ends, transverse slat 521 is vertical with the shaft axis of motor 3, the lower end of transverse slat 521 has the concave surface 54 of circular arc, concave surface 524 can fit with the attachment face 31 on the casing of motor 3 against, the outer side surface of stringer board 522 flushes with the outer side wall of housing 51, the attachment face 31 on the lower end of stringer board 522 and the casing of motor 3 fit against.Leaning seat 52 also comprises stiffening plate 523, stiffening plate 523 is between transverse slat 521, stiffening plate 523 comprises two pieces of angles stiffening plate portion 523a in obtuse angle, the angle of two pieces of stiffening plate portion 523a is 150 ° ~ 180 °, as preferably, the angle 170 ° of two pieces of stiffening plate portion 523a in the present embodiment, the lower end of two pieces of stiffening plate portion 523a all has the concave surface 524 of circular arc, concave surface 524 on two pieces of stiffening plate portion 523a is oppositely arranged and smooth connection, the concave surface 524 of two pieces of stiffening plate portion 523a can fit with the attachment face 31 on the casing of motor 3 against.
Frequency variator 5 can regulate the rotating speed of motor 3 according to actual service condition, also just can regulate the output power of frequency conversion peripheral pump, improve the utilization efficiency of frequency conversion peripheral pump, save electric energy, improve efficiency, reduced user cost; Can first be contacted with compensator 4 or outlet conduit 22 when the situation such as clashing into, reduce the injury to frequency variator 5, protect the use safety of frequency variator 5, by rational deployment's frequency variator 5 and the position relationship between motor 3, compensator 4 and the pump housing 2 reduce that frequency variator 5 comes to harm may, without the need to adopting additional protective casing 51, reduce cost; After current pump into outlet conduit 22, the relative intake pipe 21 of its flowing velocity can increase, there is certain impact power, frequency variator 5 is arranged on and can increases the overall weight of base 1 in this side near intake pipe 21 side, the vibration of base 1 can be reduced, improve the stability that frequency conversion peripheral pump runs, reduce noise when frequency conversion peripheral pump runs; Frequency variator 5 and the means of fixation of the casing of motor 3 reduce the vibration that produces when motor 3 runs to the impact of electronic parts and components in frequency variator 5.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.