CN112727781A

CN112727781A - Centrifugal pump convenient to dismouting

Info

Publication number: CN112727781A
Application number: CN202011622164.XA
Authority: CN
Inventors: 罗超; 罗昊; 吕梅
Original assignee: Fuyang Xingong Electromechanical Equipment Co ltd
Current assignee: Fuyang Xingong Electromechanical Equipment Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-04-30

Abstract

The invention relates to the technical field of centrifugal pumps, and discloses a centrifugal pump convenient to disassemble and assemble, which comprises a base, a centrifugal pump shell, a water inlet pipe, a decontamination pipe, an impeller, a cover plate, a lubricating oil tank and a motor, wherein the water inlet pipe, the decontamination pipe, the centrifugal pump shell, the cover plate and the lubricating oil tank are sequentially and fixedly connected through bolts, the centrifugal pump shell is fixedly connected to one side of the top of the base, a slide rail is fixedly connected to the top of the other side of the base, a limiting plate is arranged at the end part of the slide rail, a water inlet is formed in one side of the centrifugal pump shell, a water outlet is. The device is through using bolt independent connection with centrifugal pump casing, inlet tube, decontamination duct, apron and lubricating-oil tank, has made things convenient for the dismouting of centrifugal pump, and each part relatively independently can correspond the dismantlement and maintain and change the part, has reduced the maintenance degree of difficulty, has practiced thrift cost of maintenance and has also improved work efficiency greatly.

Description

Centrifugal pump convenient to dismouting

Technical Field

The invention relates to the technical field of centrifugal pumps, in particular to a centrifugal pump convenient to disassemble and assemble.

Background

Centrifugal pumps operate by causing water to move centrifugally as a result of the rotation of an impeller. Before the water pump is started, the pump shell and the water suction pipe are filled with water, then the motor is started, the pump shaft drives the impeller and the water to rotate at a high speed, the water is thrown to the outer edge of the impeller to be thrown into a water pressure pipeline of the water pump through a flow channel of the volute-shaped pump shell.

Most centrifugal pumps all are the integral type structure at present, inconvenient dismantlement and installation, this has increased a lot of manpower and materials when maintaining, the maintenance time of having wasted greatly has increased the maintenance degree of difficulty, not only cost of maintenance increases and has also reduced work efficiency, and the centrifugal pump mostly all sets up the filter screen at the tip of pipe, this can lead to using after a period impurity cover filter screen to lead to blockking up, not only influenced water intake rate, still can lead to the impeller idle running to generate heat when serious, greatly reduced stability and life.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the centrifugal pump convenient to disassemble and assemble, which has the advantages of easy disassembly and assembly, impurity removal and the like, and solves the problems of high maintenance difficulty and influence on use due to impurity blockage.

(II) technical scheme

In order to solve the technical problems, the invention provides the following technical scheme: a centrifugal pump convenient to disassemble and assemble comprises a base, a centrifugal pump shell, a water inlet pipe, a decontamination pipe, an impeller, a cover plate, a lubricating oil tank and a motor, wherein the water inlet pipe, the decontamination pipe, the centrifugal pump shell, the cover plate and the lubricating oil tank are sequentially and fixedly connected through bolts, the centrifugal pump shell is fixedly connected to one side of the top of the base, a slide rail is fixedly connected to the top of the other side of the base, a limiting plate is arranged at the end part of the slide rail, a water inlet is formed in one side of the centrifugal pump shell, a water outlet is formed in the top of the centrifugal pump shell, one side of the water inlet is fixedly connected with the decontamination pipe, a filter screen is inserted into the decontamination pipe, one side of the filter screen is rotatably connected with a brush rod, a speed reducer is sleeved at the end part, the cover plate is fixedly connected with the other side of the centrifugal pump shell, the lubricating oil tank is fixedly connected with one side of the cover plate, and the motor is slidably connected with one side of the top of the base.

Preferably, first draw-in groove has been seted up to the inside both sides of decontamination tube, the filter screen both ends are provided with the bayonet lock, the bayonet lock is in sliding connection in the first draw-in groove, speed reducer one side both ends are provided with the connecting rod, the connecting rod is sliding connection in first draw-in groove.

Preferably, the brush on the brush rod is attached to the surface of the filter screen, an opening is formed in the joint of the decontamination pipe and the impurity collecting tank, an inclined baffle is arranged at the end of the opening, the baffle is located outside the filter screen and is not attached to the filter screen, and a pulling plate is inserted into the bottom of the impurity collecting tank.

Preferably, the inlet tube includes inner tube and outer tube, the inner tube is pegged graft and is passed through the flow distribution plate welding at the intraductal and tip of outer tube, the inner tube middle part is provided with the ball valve, ball valve handle department runs through the outer tube and extend to its outside, outer tube end portion is provided with flange.

Preferably, the lateral walls of the two sides of the impeller are uniformly provided with arc-shaped blades, square plates are uniformly arranged around the impeller, the side faces of the arc-shaped blades are fixedly connected with clamping plates, and the arc-shaped blades are close to the centers of the impeller, opposite in swinging direction and located outside the clamping plates.

Preferably, a rotating groove is welded on one side in the centrifugal pump shell, a rotating ring is welded on the side face of the clamping plate, the rotating ring is rotatably connected in the rotating groove, and a second clamping groove is formed in one side of the center of the impeller.

Preferably, the lubricating oil tank center is connected with the pivot in a rotating manner, a clamping key is clamped on one side of the pivot, the pivot penetrates through the cover plate and is inserted in the impeller, the clamping key is located in the second clamping groove, and the end part of one end of the pivot is inserted in the speed reducer.

Preferably, the bottom of the motor is fixedly connected with a sliding block, the sliding block is slidably connected with the sliding rail, one side of the sliding block is in threaded connection with a fixed block, and the shaft part of the fixed block penetrates through the side wall of the sliding rail.

Preferably, the bottom of the motor is fixedly connected with a fixing plate, the middle of the fixing plate is rotatably connected with a screw, the screw penetrates through the limiting plate and is in threaded connection with the limiting plate, the end part of the screw is fixedly connected with a rotary disc, and the shaft part of the motor is fixedly connected with the rotary shaft through a coupler.

(III) advantageous effects

Compared with the prior art, the invention provides the centrifugal pump convenient to disassemble and assemble, which has the following beneficial effects:

1. this centrifugal pump convenient to dismouting through using bolt independent connection with centrifugal pump casing, inlet tube, decontamination duct, apron and lubricating-oil tank, has made things convenient for the dismouting of centrifugal pump, and each part relatively independently can correspond the dismantlement and maintain and change the part, has reduced the maintenance degree of difficulty, has practiced thrift cost of maintenance and has also improved work efficiency greatly.

2. This centrifugal pump convenient to dismouting scrubs the filter screen through the brush pole to collect impurity and discharge by the arm-tie in the impurity collecting vat, avoid impurity to block up the filter screen influence and use, also convenient collect and discharge impurity, guaranteed that the stability of device has also effectively improved life.

3. This centrifugal pump convenient to dismouting, through opening and shutting of ball valve control inner tube and under the cooperation of outer tube, can carry out the regulation of inflow, close the inner tube under the condition of just starting and also effectively improved pumping rate and stability, because the rotational speed needs time to promote and stabilize under the condition that the motor just started, so the reduction of the volume of pumping earlier stage makes work more stable.

4. This centrifugal pump convenient to dismouting is injectd through rethread screw rod with motor sliding connection on the slide rail, conveniently when the installation with dismantle the back and remove the motor, the use atress of screw rod is more stable and more convenient, avoids long-time use back part cooperation tension to lead to dismantling the difficulty, uses mallet or bar copper to beat can lead to spare part impaired and inefficiency, uses the screw rod to pull out then more labour saving and time saving.

5. This centrifugal pump convenient to dismouting avoids water to concentrate on the side of centrifugal pump casing through setting up of impeller both sides arc blade, makes the direction and the speed of rivers have injectd under the encirclement of splint, and the lifting surface is bigger under hitting of square slab, has effectively improved centrifugal force and has increased the lift of centrifugal pump.

6. This centrifugal pump convenient to dismouting, through lubrication and the cooling of lubricating-oil tank, and use the shaft coupling to carry out the connection of motor and pivot, guaranteed the stability of centrifugal pump when using, the coupling joint fault-tolerant rate is higher and dismantle conveniently, avoids appearing disconnected axle and thermal conduction, has effectively improved life.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a second perspective view of the overall structure of the present invention;

FIG. 3 is an exploded view of the overall structure of the present invention;

FIG. 4 is an exploded view of the internal structure of the centrifugal pump of the present invention;

FIG. 5 is a perspective view of the impeller structure of the present invention;

FIG. 6 is a perspective view of the motor structure of the present invention;

FIG. 7 is an exploded view of the piping structure of the present invention;

FIG. 8 is a perspective view of the water inlet pipe according to the present invention;

fig. 9 is a perspective view of the structure of the decontamination tube of the present invention.

In the figure: 1. a base; 101. a slide rail; 2. a centrifugal pump housing; 3. a water inlet pipe; 301. an inner tube; 302. an outer tube; 303. a flow distribution plate; 304. a ball valve; 305. a connecting flange; 4. a decontamination pipe; 5. an impeller; 501. an arc-shaped blade; 502. a square plate; 503. a splint; 6. a cover plate; 7. a lubricating oil tank; 8. a motor; 9. a limiting plate; 10. a water inlet; 11. a water outlet; 12. filtering with a screen; 13. a brush rod; 14. a speed reducer; 15. an impurity collecting tank; 16. a first card slot; 17. a bayonet lock; 18. a connecting rod; 19. a baffle plate; 20. pulling a plate; 21. a rotating groove; 22. a rotating ring; 23. a second card slot; 24. a rotating shaft; 25. a card key; 26. a slider; 27. a fixed block; 28. a fixing plate; 29. a screw; 30. a turntable; 31. a coupling; 32. and (4) bolts.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-9, a centrifugal pump convenient for disassembly and assembly comprises a base 1, a centrifugal pump casing 2, a water inlet pipe 3, a decontamination pipe 4, an impeller 5, a cover plate 6, a lubricating oil tank 7 and a motor 8, wherein the water inlet pipe 3, the decontamination pipe 4, the centrifugal pump casing 2, the cover plate 6 and the lubricating oil tank 7 are fixedly connected through a bolt 32 in sequence, the centrifugal pump casing 2 is fixedly connected to one side of the top of the base 1, a slide rail 101 is fixedly connected to the top of the other side of the base 1, a limiting plate 9 is arranged at the end of the slide rail 101, a water inlet 10 is arranged at one side of the centrifugal pump casing 2, a water outlet 11 is arranged at the top of the centrifugal pump casing 2, one side of the water inlet 10 is fixedly connected with the decontamination pipe 4, a filter screen 12 is inserted in the decontamination pipe 4, one side of the filter screen 12, impeller 5 rotates to be connected in centrifugal pump shell 2, 6 opposite sides of apron fixed connection and centrifugal pump shell 2, lubricating-oil tank 7 fixed connection and apron 6 one side, 8 sliding connection of motor and base 1 top one side.

Furthermore, first clamping grooves 16 are formed in two sides of the interior of the decontamination tube 4, clamping pins 17 are arranged at two ends of the filter screen 12, the clamping pins 17 are connected in the first clamping grooves 16 in a sliding manner, connecting rods 18 are arranged at two ends of one side of the speed reducer 14, and the connecting rods 18 are connected in the first clamping grooves 16 in a sliding manner, so that the speed reducer 14, the brush rod 13 and the filter screen 12 are sequentially installed in the installation process, the decontamination tube 4 is sleeved outside the filter screen 12 and is installed inwards by aligning the clamping pins 17 and the first clamping grooves 16, because the clamping pins 17 and the connecting rods 18 are connected with the first clamping grooves 16 in a sliding manner, the decontamination tube 4 is sleeved to the bottom, the decontamination tube 4 is fixed on one side of the centrifugal pump shell 2 by using bolts 32 after being completely inserted, when the filter screen 12 and the brush rod 13 need to be replaced, or when the speed reducer 14 needs to be maintained, the quick replacement and maintenance can be carried out only by detaching the connected bolts, the filter screen 12 and the speed reducer 14 are respectively limited by the bayonet lock 17 and the connecting rod 18, because the decontamination pipe 4 is fixed, the rotating shaft 24 can not drive the speed reducer 14 to rotate when driving the brush rod 13 to rotate, the use of the speed reducer 14 is prevented from being influenced, the rotating shaft 24 and the brush rod 13 which are respectively inserted at the two ends of the speed reducer 14 reduce the rotating speed through the speed reducer 14, the rotating speed of the brush rod 13 is reduced, the condition that the rotating speed is too high as the rotating speed of the impeller 5 to cause brush scrap and influence the service life is avoided, the filter screen 12 is static, the brush rod 13 and the relative movement thereof are ensured, impurities filtered on the surface of the filter screen 12 can be brushed off, because fine soft bristles on the brush rod 13 can be inserted into filter holes of the filter screen 12 to prevent blockage when the brush rod 13 is attached to the filter screen 12 to rotate, the influence on the water inlet rate caused by the blockage of the, guaranteed to release the filter screen 12 surface with filterable tiny impurity like mud granule etc. after the fluff gets into the filtration pore, if brush pole 13 is located the opposite side and can only wash the mud on filter screen 12 surface, but can not dredge the impurity in the filtration pore, the in-process of dredging probably leads to the fluff to send into the mud granule in the filtration pore and inside entering centrifugal pump, and then guarantees not to brush impurity into the inside influence of centrifugal pump and use and stability.

Further, brush laminating filter screen 12 surface on brush pole 13, decontamination duct 4 and impurity collecting vat 15 junction are seted up mouthful and the tip is provided with the baffle 19 of slope form, baffle 19 is located the filter screen 12 outside and does not laminate, it has arm-tie 20 to peg graft in impurity collecting vat 15 bottom, thereby it filters impurity to circulate filter screen 12 at the in-process rivers of intaking, impurity stops on filter screen 12 surface, it drops to make impurity under the brush-wash of the brush pole 13 of laminating, impurity blocks up filter screen 12 and leads to the limited influence efficiency of inflow when avoiding long-time use, and make into water and form the vortex under brush pole 13's fast turn, the vortex can make impurity and partial water source get into in impurity collecting vat 15 when the bottom through decontamination duct 4, impurity gets into the impurity collecting vat 15 of decontamination duct 4 bottom and collects, baffle 19 slope can make the impurity of laminating get into impurity collecting vat 15, rivers in impurity collecting vat 15 are stirred and are swarmed down the baffle 19 that the slope and stop to reduce the power of shaking when impurity collecting vat 15 Also avoided most impurity to get back to inside decontamination pipe 4 again, baffle 19 and filter screen 12 do not laminate and guarantee to leave the clearance and make impurity can get into impurity collecting vat 15 smoothly, let the centrifugal pump continue idle running 20 seconds after the centrifugal pump is used to end, avoid rivers to influence the stirring of impurity, with the impurity clearance on filter screen 12 surface and make it freely fall into impurity collecting vat 15 in, the arm-tie 20 of impurity collecting vat 15 bottom can be after using a period pull out arm-tie 20 and carry out the emission of impurity, avoid time overlength impurity to pile up influence normal use, and then effectively clear up impurity and avoid blockking up, also convenient collect and discharge impurity.

Furthermore, the water inlet pipe 3 comprises an inner pipe 301 and an outer pipe 302, the inner pipe 301 is inserted into the outer pipe 302, the end part of the inner pipe 301 is welded by a flow distribution plate 303, a ball valve 304 is arranged in the middle of the inner pipe 301, the handle of the ball valve 304 penetrates through the outer pipe 302 and extends to the outside of the outer pipe, and a connecting flange 305 is arranged at the end part of the outer pipe 302, so that a water pipe can be connected to the connecting flange 305 to ensure stability during use, if a temporary water pipe can be sleeved outside the water inlet pipe 3 and connected by a clamp, air is firstly discharged by the rotation of the impeller 5 after the centrifugal pump is used and water is pumped out after negative pressure is generated in the centrifugal pump shell 2, but the air density is small and cannot enable complete vacuum to be generated in the pump body, so that water must be added and then started during daily use, but if the loss of water with a larger pipe orifice is also accelerated, the water pumping speed is slow, so that, then the starter motor 8 drives the impeller 5 to rotate and pump water, the flow distribution plate 303 fixes the inner pipe 301 and the outer pipe 302, only the outer pipe 302 is in an open state after the inner pipe 301 is closed, because the area of the pipe orifice of the extraction is reduced, so the extraction speed can be increased, the water can be extracted into the centrifugal pump shell 2 at an accelerated speed, the power in the previous stage is also large, the flow of the extraction with the pipe orifice becoming small can be reduced in the same way, the water yield can be reduced, the ball valve 304 is opened to communicate the inner pipe 301 when the water yield needs to be increased after the operation is stable, the water yield is increased at the moment, and then the transmission assembly is prevented from heating in the extraction of the accelerated water, the working efficiency is greatly increased, the water feeding speed is ensured on the premise of not influencing the water yield.

Furthermore, arc-shaped blades 501 are uniformly arranged on the side walls of two sides of the impeller 5, square plates 502 are uniformly arranged around the impeller 5, a clamping plate 503 is fixedly connected to the side surface of each arc-shaped blade 501, the swinging directions of the positions, close to the center of the impeller 5, of the arc-shaped blades 501 are opposite and are positioned outside the clamping plate 503, so that the center of the impeller 5 is aligned with the water inlet 10 to pump water, the arc-shaped blades 501 can quickly concentrate air at the edge of the centrifugal pump shell 2 in the rotating process of the impeller 5, meanwhile, the rotating stress area of the square plates 502 is larger, so that the air can be discharged out of the centrifugal pump shell 2 at an accelerated speed, water is pumped into the centrifugal pump shell 2 after negative pressure is generated in the centrifugal pump shell 2, the swinging directions of the center of the arc-shaped blades 501 are opposite, namely the swinging directions of the arc-shaped blades 502 are the same as the rotating directions of the impeller 5, so that water can be quickly carried into gaps of, the hydroenergy that makes the extraction is more quick and concentrated by being got rid of to the edge of centrifugal pump casing 2 like this, will be hit by square plate 502 and discharge through delivery port 11 after water gets rid of to the arc blade 501 edge, because square plate 502's lifting surface is big, so the strength that the rotation brought is more can accelerate the discharge of water, and then has effectively improved the water yield and has increased the lift of centrifugal pump.

Further, one side welding has the rotation groove 21 in the centrifugal pump casing 2, splint 503 side welding has the swivel becket 22, swivel becket 22 is at the rotation connection of rotation groove 21 internal rotation, second draw-in groove 23 has been seted up to impeller 5 center one side, thereby can install impeller 5 in centrifugal pump casing 2 fast through rotation groove 21 and swivel becket 22, earlier make things convenient for the installation of pivot 24 and apron 6 after the fixed completion of impeller 5 in the installation, even dismantle apron 6 and pivot 24 back impeller 5 can also fix in centrifugal pump casing 2 when demolising, and then guaranteed that stability also conveniently carries out the installation and the demolition of centrifugal pump.

Furthermore, a rotating shaft 24 is rotatably connected to the center of the lubricating oil tank 7, a clamping key 25 is clamped on one side of the rotating shaft 24, the rotating shaft 24 penetrates through the cover plate 6 and is inserted into the impeller 5, the clamping key 25 is located in the second clamping groove 23, and the end part of one end of the rotating shaft 24 is inserted into the speed reducer 14, so that the rotating shaft 24 is prevented from heating and wearing through lubrication of the lubricating oil tank 7, the rotating stability and the service life are ensured, when the rotating shaft 24 is installed, the clamping key 25 needs to be installed on the side surface of the rotating shaft 24, then the rotating shaft 24 is slowly knocked into the impeller 5 by using a copper rod, the clamping key 25 is matched with the second clamping groove 23 to limit and ensure the transmission force and stability, when the rotating shaft 24 is inserted into the speed reducer 14 and matched with the speed reducer 14 to ensure the transmission force, the rotation of the rotating shaft 24 is transmitted to the brush rod 13 after the speed reduction, the installation and the disassembly of the rotating shaft 24, the impeller 5 and the like are also convenient.

Further, motor 8 bottom fixedly connected with slider 26, slider 26 is sliding connection in slide rail 101, slider 26 one side threaded connection has fixed block 27, the fixed block 27 axial region runs through slide rail 101 lateral wall, thereby motor 8 has just prescribed a limit to the height when the installation, do not need deliberate height-adjusting and position, after the centrifugal pump installation is accomplished with motor 8 push away to centrifugal pump department can, after the motor 8 installation is accomplished with the fixed block 27 rotatory screw up can, fixed block 27 screws up with slider 26 threaded connection will extrude slide rail 101 and reach spacing purpose, avoid motor 8 the skew to appear when using or rock the influence and use, and then guaranteed stability and enforceability, and convenient regulation and installation.

Furthermore, the bottom of the motor 8 is fixedly connected with a fixed plate 28, the middle part of the fixed plate 28 is rotatably connected with a screw 29, the screw 29 penetrates through the limiting plate 9 and is in threaded connection with the limiting plate, the end part of the screw 29 is fixedly connected with a rotating disc 30, the shaft part of the motor 8 is fixedly connected with the rotating shaft 24 through a coupling 31, thereby rotating the turntable 30 to drive the screw 29 to rotate when the centrifugal pump is dismounted, the screw 29 rotates to drive the motor 8 to be far away from the centrifugal pump, the parts are prevented from being fastened too tightly after long-time use, but the precision among the parts is affected by simple knocking and the dismounting efficiency is too low, the shaft part of the motor 8 is connected with the rotating shaft 24 through the coupler 31 to realize transmission, and the possibility of shaft breakage caused by the shaking of the motor 8 part or the impeller 5 part in the running process is avoided, the heat transfer caused by the connection of the shaft parts is also avoided, and then guaranteed stability and life, connect also conveniently through shaft coupling 31 and carry out the dismouting to the device.

The working principle is as follows: when in use, the impeller 5 can be quickly installed in the centrifugal pump shell 2 through the rotating groove 21 and the rotating ring 22, the impeller 5 is fixed and then the rotating shaft 24 and the cover plate 6 are more conveniently installed during installation, the rotating shaft 24 is slowly knocked into the impeller 5 through a copper bar, the clamping key 25 is required to be installed on the side surface of the rotating shaft 24 during installation of the rotating shaft 24, the clamping key 25 is matched with the second clamping groove 23 to realize limitation and ensure transmission force and stability, the cover plate 6 and the lubricating oil tank 7 are fastened through the bolt 32 after the rotating shaft 24 is installed, the rotating shaft 24 is prevented from heating and wearing through lubrication of the lubricating oil tank 7, the rotating stability and the service life are ensured, the installation of the motor 8 is carried out after the installation, the height of the motor 8 is limited during the installation, the height and the position of the motor 8 do not need to be adjusted deliberately, only the motor 8 needs to be pushed to the centrifugal pump, and then the, the shaft part of the motor 8 is connected with the rotating shaft 24 through the coupler 31 to realize transmission, the possibility of shaft breakage caused by shaking of the motor 8 part or the impeller 5 part in the operation process is avoided, heat transfer caused by shaft connection is also avoided, the fixing block 27 is screwed up in a rotating mode after the motor 8 is installed, the sliding rail 101 is extruded to achieve the purpose of limiting after the fixing block 27 is screwed up in a threaded connection with the sliding block 26, the phenomenon that the motor 8 is deviated or shaken to affect use when in use is avoided, when the motor 8 needs to be dismounted, the rotating disc 30 is rotated to drive the screw 29 to rotate, the screw 29 is rotated to drive the motor 8 to be far away from the centrifugal pump, the phenomenon that parts are too tight after long-time use is avoided, but the precision among the parts is affected by simple knocking, and the dismounting efficiency is too low, the speed reducer 14 is inserted into the end part at the other end of the, the end part of the rotating shaft 24 is inserted in the speed reducer 14 and matched with the speed reducer 14 to ensure transmission force transmission, the rotation of the rotating shaft 24 is transmitted to the brush rod 13 after the speed reducer 14 is reduced to remove impurities, the end part of the brush rod 13 is used for installing the filter screen 12, then the decontamination pipe 4 is sleeved outside the filter screen 12 and is inserted by aligning with the bayonet 17 and the first clamping groove 16, finally the decontamination pipe 4 is inserted to the bottom by aligning with the connecting rod 18 and the first clamping groove 16 and then is fastened by the bolt 32, the water inlet pipe 3 is fixed on one side of the decontamination pipe 4 by the bolt 32 after the fastening is finished, thus the centrifugal pump is installed, when needing fixed-point dismantling, only a part of the decontamination pipe 4 and the centrifugal pump shell 2 needs to be dismantled without integral dismantling, for example, when the filter screen 12 and the brush rod 13 need to be changed, only the bolt of the decontamination pipe 4 and the decontamination pipe 4 needs to be dismantled, if only need get rid of shaft coupling 31 and removal motor 8 when needing to change lubricating-oil tank 7, then demolish lubricating-oil tank 7 and apron 6 the bolt 32 change can, each part of this centrifugal pump all is relatively independent and through the bolt 32 fastening, only need dismantle relative partly can not need wholly to dismantle when dismantling the maintenance, easy to assemble dismantles and has improved work efficiency greatly, has reduced the maintenance degree of difficulty.

When in use, a water pipe is connected to the water inlet pipe 3, the ball valve 304 is closed firstly, air is discharged firstly through the rotation of the impeller 5 after the centrifugal pump is started, water is pumped out after negative pressure is generated in the centrifugal pump shell 2, but the air density is low, so that complete vacuum can not be generated in the pump body, water is added and then the centrifugal pump is started in daily use, but if the water is drained due to a large pipe orifice, the water pumping speed is also low, so that the ball valve 304 is rotated firstly to enable the inner pipe 301 to be in a closed state when in use, then the motor 8 is started to drive the impeller 5 to rotate for pumping water, only the outer pipe 302 is in an open state after the inner pipe 301 is closed, and as the area of the pumped pipe orifice is reduced, the pumping speed is increased, water can be pumped into the centrifugal pump shell 2 in an accelerated manner, the power in the former stage is also high, and the pumping flow rate is reduced due to the fact, the water yield is reduced, when the water yield needs to be increased after the operation is stable, the ball valve 304 is opened to enable the inner pipe 301 to be communicated, the water yield is increased when the water yield is increased, the water inlet 10 is aligned with the center position of the impeller 5 to pump water in the working process, the arc-shaped blades 501 can quickly concentrate air at the edge of the centrifugal pump shell 2 in the rotating process of the impeller 5, meanwhile, the square plate 502 is larger in rotating stress area to accelerate the air to be discharged out of the centrifugal pump shell 2, when negative pressure is generated in the centrifugal pump shell 2, the water is pumped into the centrifugal pump shell 2, because the swinging direction of the center position of the arc-shaped blades 501 is opposite to the rotating direction of the impeller 5, the water can be quickly carried into the gaps of the arc-shaped blades 501, the water is prevented from flowing out and scattering to the side face of the centrifugal pump shell 2 after entering the gaps of the arc-shaped blades 501 under, therefore, the pumped water can be more quickly and intensively thrown to the edge of the centrifugal pump shell 2, when the water is thrown to the edge of the arc-shaped blade 501, the water can be beaten by the square plate 502 and discharged through the water outlet 11, because the stress area of the square plate 502 is large, the force caused by rotation is larger, the discharge of the water can be accelerated, because the two sides of the impeller 5 are of the same structure, the water on the side wall of the centrifugal pump shell 2 can be intensively thrown to the edge of a pump body for discharge, the water outlet quantity and the lift of the centrifugal pump are ensured, the water circulates through the filter screen 12 to filter impurities in the water inlet process, the impurities stay on the surface of the filter screen 12, meanwhile, the brush rod 13 is reduced in speed and rotates under the speed reduction of the speed reducer 14, the phenomenon that the rotation speed is the same as the rotation speed of the impeller 5 to cause the over-speed to cause the scrapping of brushes is avoided, the filter screen 12 is static to ensure that the brush rod, because fine soft bristles on the brush rod 13 can be inserted into filter holes of the filter screen 12 to prevent blockage when the brush rod 13 is attached to the filter screen 12 to rotate, the influence on the efficiency caused by limited water inflow due to the fact that impurities block the filter screen 12 in long-term use is avoided, the water enters into the vortex under the rapid rotation of the brush rod 13, impurities and partial water sources can enter the impurity collecting tank 15 when the vortex passes through the bottom of the decontamination pipe 4, the impurities enter the impurity collecting tank 15 at the bottom of the decontamination pipe 4 to be collected, the attached impurities can enter the impurity collecting tank 15 due to the inclination of the baffle plate 19, when water flow in the impurity collecting tank 15 is blocked by the inclined baffle plate 19 under stirring and agitation to reduce the oscillation force, most of the impurities are prevented from returning to the inside of the decontamination pipe 4 again, the baffle plate 19 is not attached to the filter screen 12, a gap is guaranteed to be reserved so that the impurities can smoothly enter the impurity collecting tank 15, and the centrifugal pump is, avoid rivers to the stirring influence of impurity, with the impurity clearance on filter screen 12 surface and make it freely fall into impurity collecting vat 15 in, the arm-tie 20 of impurity collecting vat 15 bottom can be used a period of time after pull out the arm-tie 20 and carry out the emission of impurity, avoid time overlength impurity to pile up influence normal use, only need in the use periodic clearance impurity collecting vat 15 and in lubricating-oil tank 7 pour into lubricating oil can.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a centrifugal pump convenient to dismouting, includes base (1), centrifugal pump casing (2), inlet tube (3), decontamination pipe (4), impeller (5), apron (6), lubricating-oil tank (7) and motor (8), its characterized in that:

the water inlet pipe (3), the decontamination pipe (4), the centrifugal pump shell (2), the cover plate (6) and the lubricating oil tank (7) are fixedly connected through bolts (32) in turn,

the centrifugal pump shell (2) is fixedly connected with one side of the top of the base (1), the other side of the top of the base (1) is fixedly connected with a sliding rail (101), the motor (8) is connected with one side of the top of the base (1) in a sliding way through the sliding rail (101),

a water inlet (10) is arranged on one side of the centrifugal pump shell (2), a water outlet (11) is arranged on the top of the centrifugal pump shell (2), one side of the water inlet (10) is fixedly connected with the decontamination pipe (4),

a filter screen (12) is inserted in the decontamination pipe (4), one side of the filter screen (12) is rotatably connected with a brush rod (13), a speed reducer (14) is sleeved at the end part of the brush rod (13), an impurity collecting tank (15) is arranged at the bottom of the decontamination pipe (4), one end of the decontamination pipe (4) far away from the water inlet (10) is fixedly connected with the water inlet pipe (3),

impeller (5) rotate connect in centrifugal pump shell (2), apron (6) fixed connection is in centrifugal pump shell (2) opposite side, lubricating-oil tank (7) fixed connection is in apron (6) one side.

2. A centrifugal pump easy to disassemble and assemble according to claim 1, wherein: first draw-in groove (16) have been seted up to inside both sides of decontamination pipe (4), filter screen (12) both ends are provided with bayonet lock (17), bayonet lock (17) are in sliding connection in first draw-in groove (16), speed reducer (14) one side both ends are provided with connecting rod (18), connecting rod (18) sliding connection in first draw-in groove (16).

3. A centrifugal pump for easy disassembly and assembly according to claim 2, wherein: the brush on the brush rod (13) is attached to the surface of the filter screen (12), a port is formed in the joint of the decontamination pipe (4) and the impurity collecting tank (15), the end of the baffle (19) is provided with an inclined baffle (19), the baffle (19) is located on the outer side of the filter screen (12) and is not attached to the filter screen, and a pull plate (20) is inserted into the bottom of the impurity collecting tank (15).

4. A centrifugal pump easy to disassemble and assemble according to claim 3, wherein: the water inlet pipe (3) comprises an inner pipe (301) and an outer pipe (302), the inner pipe (301) is inserted into the outer pipe (302) and the end part of the inner pipe is welded through a flow distribution plate (303), a ball valve (304) is arranged in the middle of the inner pipe (301), a handle of the ball valve (304) penetrates through the outer pipe (302) and extends to the outside of the outer pipe, and a connecting flange (305) is arranged at the end part of the outer pipe (302).

5. A centrifugal pump convenient to disassemble and assemble according to claim 4, wherein: impeller (5) both sides lateral wall evenly is provided with arc blade (501), impeller (5) evenly is provided with square plate (502) all around, arc blade (501) side fixedly connected with splint (503), arc blade (501) are close to the position swing opposite direction at impeller (5) center and are in splint (503) outside.

6. A centrifugal pump convenient to disassemble and assemble according to claim 5, wherein: one side welding has rotation groove (21) in centrifugal pump casing (2), splint (503) side welding has swivel becket (22), swivel becket (22) are at rotation groove (21) internal rotation connection, second draw-in groove (23) have been seted up to impeller (5) center one side.

7. A centrifugal pump for easy disassembly and assembly according to claim 6, wherein: the lubricating oil tank (7) center is rotationally connected with a rotating shaft (24), a clamping key (25) is clamped on one side of the rotating shaft (24), the rotating shaft (24) penetrates through the cover plate (6) and is inserted into the impeller (5), the clamping key (25) is located in the second clamping groove (23), and the end part of one end of the rotating shaft (24) is inserted into the speed reducer (14).

8. A centrifugal pump for easy disassembly and assembly according to claim 7, wherein: motor (8) bottom fixedly connected with slider (26), slider (26) are in slide rail (101) sliding connection, slider (26) one side threaded connection has fixed block (27), fixed block (27) axial region runs through slide rail (101) lateral wall.

9. A centrifugal pump for easy disassembly and assembly as claimed in claim 8, wherein: slide rail (101) tip is provided with limiting plate (9), motor (8) bottom fixedly connected with fixed plate (28), fixed plate (28) middle part is rotated and is connected with screw rod (29), screw rod (29) run through limiting plate (9) and threaded connection with it, screw rod (29) tip fixedly connected with carousel (30), shaft coupling (31) fixed connection is passed through with pivot (24) in motor (8) axial region.