CN112761961B - Water pump - Google Patents

Abstract

The invention relates to the technical field of pumps, and discloses a water pump which comprises a pump body and a water pumping mechanism, wherein the water pumping mechanism comprises a liquid lifting part and a centrifugal separation part, the liquid lifting part comprises a water pumping barrel fixedly arranged in the pump body, a water inlet pipe communicated with the water pumping barrel, a rotating shaft vertically arranged in the water pumping barrel, a conveying blade spirally arranged on the rotating shaft and a first driving mechanism driving the rotating shaft to rotate, water is continuously pumped by the water pumping mechanism, the centrifugal separation part comprises a centrifugal barrel integrally arranged outside the rotating shaft above the water pumping barrel in the pump body, a through pipe penetrating through the upper end and the lower end of the rotating shaft, a water inlet arranged above the interior of the water pumping barrel on the through pipe, a water outlet arranged in the centrifugal barrel on the through pipe and a water throwing port arranged on the centrifugal barrel, water pumped by the water pumping barrel is centrifugally separated, and supernatant is discharged from a water discharging pipe, the sediment is automatically squeezed into the sediment bearing part, and the water pump can purify water in the water pumping and draining processes, so that the water pump is more environment-friendly.

Description

Water pump

Technical Field

The invention relates to the technical field of pumps, in particular to a water pump.

Background

Water pumps are machines that deliver or add liquid. The variety of water pumps is many, such as centrifugal pump, axial-flow pump and mixed-flow pump, and among them, the centrifugal pump is most widely used, and the working principle of the centrifugal pump is as follows: before the water pump starts, the pump and the water inlet pipe are filled with water, after the water pump runs, under the action of centrifugal force generated by rotation of the impeller, water in an impeller flow channel is thrown to the periphery and is pressed into the volute, a vacuum is formed at an impeller inlet, water in the water pool is sucked into and supplements the space along the water suction pipe under the external atmospheric pressure, and then the sucked water is thrown out by the impeller and enters the water outlet pipe through the volute.

The prior centrifugal pump has the following defects in application: 1. before starting, the pump body and the water suction pipe must be filled with water, the pump shell and the water suction pipe must be strictly sealed, vacuum must be formed, or water cannot be sucked, so that the requirement on equipment is high; 2. because the inlet of the impeller cannot form absolute vacuum, the water absorption height of the centrifugal pump cannot exceed 10 meters, and the actual allowable installation height is far less than 10 meters due to the loss of water flowing through the water absorption pipe, and water cannot be absorbed when the installation height is too high; 3. in the sewage purification field, to some muddy water, still need handle before discharging after the extraction, to some sewage that only is simple to contain higher silt etc. need carry out the natural sedimentation, then discharge the clear solution of top, carry out subsequent processing with the mud or the impurity of sediment, the time that generally needs to deposit is longer, and current centrifugal pump can't reach the separation of muddy water, so, the exhaust still muddy water after the extraction, still need set up equipment in addition and filter, this has just increased subsequent equipment cost and cost of labor.

Disclosure of Invention

The invention aims to provide a water pump which can synchronously separate mud and water when the mud and the water are pumped, automatically discharge separated mud and clear liquid, has double effects of pumping liquid and certain water source purification and is more environment-friendly.

In order to solve the technical problems, the invention provides the following technical scheme: a water pump comprises a pump body and a pumping mechanism positioned in the pump body, wherein the pumping mechanism comprises a liquid lifting part and a centrifugal separation part, the liquid lifting part comprises a pumping barrel fixedly arranged in the pump body, a water inlet pipe which is arranged on the pump body and communicated with the pumping barrel and a rotating shaft vertically arranged in the pumping barrel, the rotating shaft is controlled by a first driving mechanism to rotate, conveying blades are spirally distributed on the outer annular wall of the rotating shaft in the longitudinal direction, the outer wall of each conveying blade is in sealed rotating fit with the inner wall of the pumping barrel, the centrifugal separation part comprises a centrifugal barrel which is integrally arranged outside the rotating shaft above the pumping barrel in the pump body, a through pipe which penetrates through the upper end and the lower end of the rotating shaft, a water inlet which is arranged above the interior of the pumping barrel on the through pipe, a water outlet which is arranged in the centrifugal barrel on the through pipe and a water throwing port which is arranged on the centrifugal barrel, and a sediment bearing part which is used for containing sediments is detachably arranged at the lower end of the pump body, the lower end of the rotating shaft extends to the sediment bearing part, a discharge mechanism which automatically discharges the sediments generated by centrifugation to the sediment bearing part is arranged in the through pipe, a water containing cavity which contains the water thrown out from the water throwing port is formed between the pump body and the water pumping barrel, and a drain pipe communicated with the water containing cavity is arranged on the outer wall of the pump body.

Further, the discharging mechanism comprises a pressing block which is vertically and hermetically lifted in the through pipe and a second driving mechanism which drives the pressing block to lift.

Furthermore, the second driving mechanism comprises a vertically arranged screw rod and a nut which is arranged on the pressing block and matched with the screw rod, the cross section of the through pipe is non-circular, a matching disc is arranged at the upper end of the rotating shaft in a rotating matching mode, the upper end of the screw rod is fixedly connected with the matching disc, a second motor which orders about the rotation of the matching disc is arranged on the pump body, and a disconnection part which can be connected or disconnected is arranged between the second motor and the matching disc.

Furthermore, the disconnected portion includes in the fixed cooperation piece of the motor shaft end of second motor, in the sunken recess of cooperation piece lower extreme, in the sunken spacing groove of cooperation dish upper end, flexible the gag lever post that sets up in the recess and can insert the spacing groove when stretching out and set up in the electro-magnet of recess bottom, fixedly between gag lever post and the electro-magnet being provided with reset spring, the flexible of gag lever post is controlled by getting electric or losing electric of electro-magnet.

Furthermore, the lower end of the pump body can be detachably provided with a sediment containing part for containing sediment, the lower end of the rotating shaft extends to the sediment containing part, the sediment containing part is a containing barrel with an upward opening and an internal thread arranged on the inner wall of the opening, the lower end of the water pumping barrel extends to the outside of the pump body in a sealing manner, and a first external thread matched with the containing barrel is arranged on the outer wall of the water pumping barrel outside the pump body.

Furthermore, be provided with the first one-way stop gear who avoids water to flow out the pump body in the siphunculus when taking off the holding bucket between holding bucket and pivot, first one-way stop gear includes the first shutoff that sets up in siphunculus below, the first guide bar that sets up in the terminal surface symmetry under the bucket and the first stopper that sets up in the bottom of first guide bar, first shutoff direction goes up and down on first guide bar and on first guide bar on the cover be equipped with order about first shutoff keep the first of closing the siphunculus state to press the spring.

Furthermore, the pump body is provided with an installation baffle, the upper and lower sides of the installation baffle are respectively provided with a water containing cavity and a clear water cavity, the water discharge pipe is positioned in the clear water cavity, and a filtering mechanism which can filter the water in the water containing cavity and discharge the water from the water discharge pipe is detachably arranged between the installation baffle and the bottom of the pump body.

Furthermore, the filtering mechanism is a filter cylinder, filter pores are uniformly distributed on the outer ring wall of the filter cylinder, a water inlet groove for supplying water to enter the filter cylinder is formed in the upper end of the filter cylinder, a guide pipe for the filter cylinder to pass is integrally extended above the mounting partition plate, a mounting pipe with internal threads is upwards extended at the bottom of the pump body, and second external threads matched with the mounting pipe are arranged at the bottom of the outer ring wall of the filter cylinder.

Furthermore, be provided with the one-way stop gear of second that avoids holding the water intracavity to leak to the pump body outside when taking out the cartridge filter between installation baffle and stand pipe, the one-way stop gear of second includes on the installation baffle in the vertical second guide bar that sets up of bilateral symmetry of stand pipe, be fixed in the second stopper of second guide bar upper end, the direction goes up and down on the second guide bar and supports the pressure spring with the sealed complex second shutoff of stand pipe and on the second guide bar in order for second shutoff and the sealed complex second of stand pipe that establishes of cover between second shutoff and installation baffle, when cartridge filter and installation pipe installation, the stand pipe is kept away from to the second shutoff and exposes the intake chamber.

Furthermore, a first driving mechanism comprises a driven gear which is arranged on the rotating shaft between the matching disc and the pump body and is concentric with the rotating shaft, a first motor which is arranged at the upper end of the pump body and a driving gear which is fixedly arranged on a motor shaft of the first motor and is meshed with the driven gear.

Compared with the prior art, the invention has the following beneficial effects:

1. the existing water pump can only suck and discharge liquid and cannot purify the liquid, in the invention, the water pumping mechanism comprises a liquid lifting part and a centrifugal separation part, the liquid can enter a centrifugal barrel to be centrifugally separated after being lifted, finally sewage is divided into sediment and clarified liquid, the sediment and the clarified liquid are separately discharged, the traditional water pumping-water discharging is changed into water pumping-centrifuging-clear water discharging and sediment discharging, the water pumping-water discharging is applicable to the field of environmental protection, sewage is purified to a certain extent, and pollutants which can be centrifuged in the sewage are separated.

2. The promotion of liquid and the first motor of centrifugation sharing, the promotion of liquid utilizes pivot and transfer blade, and centrifugal barrel and the integrative setting of pivot, can directly get into to the inside siphunculus of pivot and then get into to the centrifugal barrel after the liquid promotes, carries out centrifugal action along with the rotation of pivot in, throws away from the mouth of getting rid of finally to holding the water intracavity, and the structure is ingenious.

3. The discharging mechanism is additionally arranged and comprises a second motor, a screw rod and a pressing block, the screw rod is rotationally connected with the rotating shaft and is connected or disconnected with the second motor through a disconnection part according to requirements, and when the screw rod is disconnected with the rotating shaft, the screw rod is in a sediment deposition state; when the two are connected, the sediment is driven to be automatically extruded to the outside of the pump body through the descending of the pressing block.

4. Add and hold dress bucket and one-way stop gear, hold the deposit that the dress bucket was used for discharging in the siphunculus to can dismantle the dress bucket according to the demand, one-way stop gear can seal the siphunculus automatically and avoid the liquid outflow pump body in the siphunculus when dismantling.

5. The installation baffle, the filtering mechanism and the second one-way limiting mechanism are additionally arranged, water after centrifugation can be further evolved, when the filtering mechanism is detached, the second one-way limiting mechanism can prevent water from flowing out of the pump body, the water pump can continuously pump water, centrifuge, independently discharge clear water and discharge sediments, the intelligent environment-friendly water pump is intelligent and environment-friendly, high in working efficiency, convenient to install, low in operation requirement and convenient to operate.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a front view of a water pump of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a cross-sectional view B-B of FIG. 2;

FIG. 4 is an enlarged view of A in FIG. 3;

fig. 5 is a cross-sectional view C-C of fig. 2.

In the figure: 1. a pump body; 2. a water pumping barrel; 3. a water inlet pipe; 4. installing a partition plate; 5. a guide tube; 6. a drain pipe; 7. installing a pipe; 8. a rotating shaft; 9. pipe passing; 10. a water inlet; 11. a water outlet; 12. a centrifuge bucket; 13. a water throwing port; 14. loading into a barrel; 15. first plugging; 16. a first biasing spring; 17. a first guide bar; 18. a first stopper; 19. a filter cartridge; 20. a water inlet groove; 21. second plugging; 22. a transfer blade; 23. a mating tray; 24. a pressing block; 25. a screw rod; 26. a second motor; 27. a first motor; 28. a driving gear; 29. a driven gear; 30. a matching block; 31. an electromagnet; 32. a return spring; 33. a limiting rod; 34. a limiting groove; 35. a second guide bar; 36. a second limiting block; 37. a second biasing spring; 38. a water containing cavity; 39. a clear water cavity.

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.

Examples

A water pump, refer to fig. 1-5, including pump body 1 and the pumping mechanism located in pump body 1, the pumping mechanism includes liquid lifting part and centrifugal separation part, the liquid lifting part includes the pumping barrel 2 fixed in pump body 1, the water inlet pipe 3 set on the pump body 1 and connected with the bottom of the outer annular wall of the pumping barrel 2 and the rotating shaft 8 set vertically in the pumping barrel 2, the rotation of the rotating shaft 8 is controlled by the first driving mechanism, there are transmission blades 22 distributed spirally in the longitudinal direction of the outer annular wall of the rotating shaft 8, the upper end of the rotating shaft 8 extends to the outside of the pump body 1, the lower end of the rotating shaft 8 extends to the outside of the pump body 1, the matching part of the rotating shaft 8 and the pumping barrel is provided with bearings and sealing rings, the outer wall of the transmission blade 22 is sealed and rotating matched with the inner wall of the pumping barrel 2, a mounting plate is horizontally fixed at intervals on the upper end of the pump body 1, the first driving mechanism includes the driven gear 29 concentrically fixed on the rotating shaft 8 outside the pump body 1, The first motor 27 of fixed setting in mounting panel upper end and in the motor shaft of first motor 27 on the fixed driving gear 28 who sets up with driven gear 29 meshing, the vertical downward setting of motor shaft of first motor 27, when first motor 27 rotates, thereby driving gear 28 drives driven gear 29 and orders about pivot 8 fast rotation, thereby conveying blade 22 rotation can be ordered about in the rotation of pivot 8 carries out the upwards transportation with water, during the installation, only need with inlet tube 3 ann submerge below the water level line can.

The centrifugal separation part is shown by referring to fig. 2-3, and comprises a centrifugal barrel 12 arranged outside a rotating shaft 8 and integrally arranged above a water pumping barrel 2 in a pump body 1, a through pipe 9 arranged at the upper end and the lower end of the rotating shaft 8 in a penetrating way, a water inlet 10 arranged above the water pumping barrel 2 in the through pipe 9, a water outlet 11 arranged in the centrifugal barrel 12 in the through pipe 9 and a water throwing port 13 arranged above the outer ring wall of the centrifugal barrel 12, wherein the caliber of the water throwing port 13 is less than 3mm, a water containing cavity 38 for containing water thrown out from the water throwing port 13 is formed between the pump body 1 and the water pumping barrel 2, a water discharging pipe 6 communicated with the water containing cavity 38 is arranged on the outer wall of the pump body 1, water is transported upwards in the transmission of a transmission blade 22, and when the water is transported to the water inlet 10, the water enters the through pipe 9 along with the water inlet 10 and finally enters the centrifugal barrel 12 from the water outlet 11 along with the continuous increase of the water, because the centrifugal barrel 12 and the rotating shaft 8 rotate synchronously all the time, the water in the through pipe 9 and the centrifugal barrel 12 always has a centrifugal effect, and sediments in the water are continuously precipitated under the dual effects of centrifugal force and natural sedimentation.

A discharge mechanism for automatically discharging the sediments generated by centrifugation to the outside of the pump body 1 is arranged in the through pipe 9, as shown in fig. 2-3, the discharge mechanism comprises a pressing block 24 vertically and hermetically lifted in the through pipe 9 and a second driving mechanism for driving the pressing block 24 to lift, the second driving mechanism comprises a lead screw 25 vertically arranged and a nut matched with the lead screw 25 and arranged on the pressing block 24, the cross section of the through pipe 9 is non-circular, preferably rectangular or elliptical, the upper end of the rotating shaft 8 is rotatably matched with a matching disc 23, the upper end of the lead screw 25 is fixedly connected with the matching disc 23, a second motor 26 for driving the matching disc 23 to rotate is arranged on the pump body 1, a disconnection part capable of connecting or disconnecting the second motor 26 and the matching disc 23 is arranged between the second motor 26 and the matching disc 23, and as shown in fig. 3-4, the disconnection part comprises a matching block 30 fixed at the end part of a motor shaft of the second motor 26, The lower end of the matching block 30 is sunken, the upper end of the matching disc 23 is sunken, the limiting groove 34 is sunken, the limiting rod 33 is telescopically arranged in the groove and can be inserted into the limiting groove 34 when extending out, the electromagnet 31 is arranged at the bottom of the groove, a reset spring 32 is fixedly arranged between the limiting rod 33 and the electromagnet 31, the expansion and contraction of the limiting rod 33 are controlled by the power on or power off of the electromagnet 31, when the electromagnet 31 is powered on, the limiting rod 33 contracts, and at the moment, the screw rod 25 stops rotating and is in a relatively static state with the rotating shaft 8; when the electromagnet 31 loses power, the limiting rod 33 extends out along with the action of the return spring 32, the screw rod 25 can rotate synchronously with the second motor 26 and form relative motion with the rotating shaft 8 along with the rotation of the motor shaft of the second motor 26 in an automatic aligning and butting mode, therefore, the pressing block 24 can be driven to lift along with the forward and reverse rotation of the screw rod 25, and when the pressing block 24 descends, sediment deposited below the through pipe 9 can be extruded to the outside of the pump body 1.

Can dismantle the deposit that is provided with the holding deposit at pump body 1 lower extreme and hold dress portion, the lower extreme of pivot 8 extends to deposit and holds dress portion, during the installation, deposit holds dress portion and keeps away from the water source, be located the exterior space, be convenient for operating personnel dismantles at any time and discharges the deposit, the concrete structure refers to and is shown in figure 2, deposit holds dress portion and upwards just the open-ended inner wall is provided with internal screw thread and holds dress bucket 14 for an opening, the lower extreme of suction bucket 2 is sealed to extend to pump body 1 outside and be provided with in pump body 1 outside the outer wall of suction bucket 2 with holding the first external screw thread of bucket complex, be provided with the piece of grabbing of being convenient for it rotatory at the lower extreme that holds dress bucket 14.

In order to realize the continuous operation of the water pump, a first one-way limiting mechanism which prevents water from flowing out of the pump body from the through pipe 9 when the containing barrel 14 is taken down is arranged between the containing barrel 14 and the rotating shaft 8, the first one-way limiting mechanism is shown by referring to fig. 2-3, and comprises a first plug 15 arranged below the through pipe 9, first guide rods 17 symmetrically arranged on the lower end surface of the pumping barrel 2 and a first limiting block 18 arranged at the bottom of the first guide rods 17, the first plug 15 is guided to lift on the first guide rods 17, a first pressure resisting spring 16 driving the first plug 15 to keep the state of sealing the through pipe 9 is sleeved on the first guide rods 17 between the first plug 15 and the first limiting block 18, when the pressure resisting block 24 is positioned above, the first plug 15 is in the state of blocking the lower end of the through pipe 9, when certain deposit is deposited in the through pipe 9, the pressure resisting block 24 descends along with the rotation of the screw rod 25, the first plug 15 moves downwards under the action of water pressure and pressure of sediments, a gap for discharging sediments and part of water is exposed at the lower end of the through pipe 9, the screw rod 25 reversely rises after the pressing block 24 is driven to the lowest position, and the first plug 15 plugs the bottom of the through pipe 9 again under the action of negative pressure, so that the containing barrel 14 can be taken down to dump the sediments inside at any time when the pressing block 24 is in a rising state.

In order to further improve the clarification degree of water discharged from the water discharge pipe 6, a mounting partition plate 4 is arranged on the pump body 1, a water containing cavity 38 is positioned above the mounting partition plate 4, a clear water cavity 39 is arranged below the mounting partition plate 4, the water discharge pipe 6 is positioned below the mounting partition plate 4, a filtering mechanism capable of filtering the water in the water containing cavity 38 and discharging the water from the water discharge pipe 6 is detachably arranged between the mounting partition plate 4 and the bottom of the pump body 1, as shown in fig. 5, the filtering mechanism is a filter cylinder 19, filter pores are uniformly distributed on the outer ring wall of the filter cylinder 19, a water inlet groove 20 for supplying water to the interior of the filter cylinder 19 is arranged at the upper end of the filter cylinder 19, a guide pipe 5 for the filter cylinder 19 to pass through is integrally extended above the mounting partition plate 4, a mounting pipe 7 with internal threads is upwardly extended at the bottom of the pump body 1, a second external thread matched with the mounting pipe 7 is arranged at the bottom of the outer ring wall of the filter cylinder 19, a rotary block convenient for rotating the filter cylinder 19 is arranged at the bottom, water enters the water containing cavity 38 from the water throwing port 13, then enters the filter cylinder 19 from the water inlet groove 20, is discharged into the clear water cavity 39 below the installation clapboard 4 through the filter micropores, and finally is discharged from the water discharge pipe 6.

In order to facilitate the replacement of the filter cartridge 19 and avoid the water in the water containing cavity 38 from flowing to the clean water cavity 39 during the replacement, and simultaneously avoid the water in the clean water cavity 39 from leaking, the upper end of the mounting tube 7 is higher than the drain tube 6 and extends to a height higher than 1/3 of the clean water cavity, a second one-way limiting mechanism for avoiding the water in the water containing cavity 38 from leaking to the outside of the pump body when the filter cartridge 19 is taken out is arranged between the mounting partition plate 4 and the guide tube 5, the second one-way limiting mechanism comprises second guide rods 35 symmetrically and vertically arranged on the two sides of the guide tube 5 on the mounting partition plate 4, a second limiting block 36 fixed on the upper end of the second guide rod 35, a second block 21 guided to lift on the second guide rod 35 and hermetically matched with the guide tube 5, and a second abutting spring 37 sleeved on the second guide rod 35 between the second block 21 and the mounting partition plate 4 for driving the second block 21 to hermetically matched with the guide tube 5, when the filter cylinder 19 and the installation pipe 7 are installed, the upper end of the filter cylinder 19 presses the second plug 21 to drive the second plug 21 to be far away from the guide pipe 5 and expose out of the water inlet groove 20; when the filter cartridge 19 is removed, the second stopper 21 seals the guide tube 5 under the action of the second biasing spring 37, so that water in the water containing chamber 38 is prevented from entering the clean water chamber from the guide tube 5.

The working principle of the water pump is as follows: before pumping water, only the water inlet pipe and the part below the water pumping barrel 2 are immersed in water, when the first motor 27 rotates, the rotation of the conveying blade 22 can continuously convey water upwards, the water is conveyed to the water inlet 10 and then enters the through pipe 9 and finally enters the centrifugal barrel 12 from the water outlet 11, the through pipe 9 and the centrifugal barrel 12 synchronously carry out centrifugal separation, clear liquid above is thrown out from the water throwing port 13 into the water containing cavity 38 and enters the clear water cavity 39 through the filter cylinder 19 and finally is discharged from the water discharging pipe 6, sediment below the through pipe 9 is automatically pressed into the containing barrel 14 in the timed descending process of the pressing block 24, an operator can observe the condition of the filter cylinder 19 according to the water discharging amount of the water discharging pipe 6 and change the situation at any time without stopping the operation of the water pump during the change, the containing barrel 14 is preferably made of transparent materials, the operator can disassemble and clean the containing barrel 14 by observing the containing degree in the containing barrel 14, the operation of the water pump does not need to be stopped during the disassembly process of the loading barrel 14, so that the whole water pump can be continuously operated, and sewage can be extracted and purified and clear water and sediments can be separately discharged.

The first motor 27 and the second motor 26 are servo motors, the pump body is provided with a PLC, the first motor 27, the second motor 26 and the electromagnet 31 are connected with the PLC, the rotating speed of the first motor 27 and the second motor 26, the rotating direction of the second motor 26 is switched, and the power getting and losing time of the electromagnet 31 can be realized through the logic programming of the PLC, the logic programming is the prior art, and the description is omitted.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides a water pump, includes pump body (1) and is located the mechanism that draws water in pump body (1), its characterized in that: the pumping mechanism comprises a liquid lifting part and a centrifugal separation part, the liquid lifting part comprises a pumping barrel (2) fixedly arranged in a pump body (1), a water inlet pipe (3) communicated with the pumping barrel (2) and a rotating shaft (8) vertically arranged in the pumping barrel (2) and arranged on the pump body (1), the rotating shaft (8) rotates under the action of a first driving mechanism, conveying blades (22) are distributed on the outer annular wall of the rotating shaft (8) in a longitudinal spiral mode, the outer wall of each conveying blade (22) is in sealed rotating fit with the inner wall of the pumping barrel (2), the centrifugal separation part comprises a centrifugal barrel (12) integrally arranged outside the rotating shaft (8) above the pumping barrel (2) in the pump body (1), a through pipe (9) arranged at the upper end and the lower end of the rotating shaft (8) in a penetrating mode, a water inlet (10) arranged above the inside of the pumping barrel (2) on the through pipe (9), a water outlet (11) arranged in the centrifugal barrel (12) on the through pipe (9) and a water outlet (12) arranged on the centrifugal barrel (12) in a throwing mode 13) The lower end of the pump body (1) is detachably provided with a sediment bearing part for containing sediment, the lower end of the rotating shaft (8) extends to the sediment bearing part, a discharge mechanism which automatically discharges the sediment generated by centrifugation to the sediment bearing part is arranged in the through pipe (9), the discharge mechanism comprises a pressing block (24) which vertically and hermetically ascends and descends in the through pipe (9) and a second driving mechanism for driving the pressing block (24) to ascend and descend, the second driving mechanism comprises a vertically arranged screw rod (25) and a nut which is arranged on the pressing block (24) and matched with the screw rod (25), the cross section of the through pipe (9) is noncircular, the upper end of the rotating shaft (8) is rotatably matched with a matching disc (23), the upper end of the screw rod (25) is fixedly connected with the matching disc (23), a second motor (26) for driving the matching disc to rotate is arranged on the pump body (1), and a disconnection part which can be connected or disconnected is arranged between the second motor (26) and the matching disc (23), the disconnected portion includes in the fixed cooperation piece (30) of motor shaft tip of second motor (26), in the sunken recess of cooperation piece (30) lower extreme, in the sunken spacing groove (34) of cooperation dish (23) upper end, the gag lever post (33) that set up in the recess and can insert gag lever post (34) when stretching out and set up in electromagnet (31) of recess bottom, fixed reset spring (32) of being provided with between gag lever post (33) and electromagnet (31), the flexible power on or the power failure that is controlled by electromagnet (31) of gag lever post (33), be formed with between the pump body (1) and pumping barrel (2) and hold water chamber (38) of holding the water that throws away from mouth of a river (13), be provided with drain pipe (6) that communicate with holding water chamber (38) at the pump body (1) outer wall.

2. A water pump as claimed in claim 1, wherein: the sediment containing part is a containing barrel (14) with an upward opening and an internal thread arranged on the inner wall of the opening, the lower end of the pumping barrel (2) extends to the outside of the pump body (1) in a sealing way, and a first external thread matched with the containing barrel (14) is arranged on the outer wall of the pumping barrel (2) outside the pump body (1).

3. A water pump as claimed in claim 2, wherein: a first one-way limiting mechanism which prevents water from flowing out of the pump body from the through pipe (9) when the containing barrel (14) is taken down is arranged between the containing barrel (14) and the rotating shaft (8), the first one-way limiting mechanism comprises a first plug (15) arranged below the through pipe (9), first guide rods (17) symmetrically arranged on the lower end face of the water pumping barrel (2) and first limiting blocks (18) arranged at the bottom of the first guide rods (17), and the first plug (15) is guided to lift on the first guide rods (17) and is sleeved with a first abutting spring (16) which drives the first plug (15) to keep the state of the through pipe (9) on the first guide rods (17) between the first plug (15) and the first limiting blocks (18).

4. A water pump as claimed in claim 1, wherein: the water pump is characterized in that the pump body (1) is provided with an installation partition plate (4), a water containing cavity (38) and a clear water cavity (39) are respectively arranged above and below the installation partition plate (4), the water drain pipe (6) is positioned in the clear water cavity (39), and a filtering mechanism which can filter water in the water containing cavity (38) and discharge the water from the water drain pipe (6) is detachably arranged between the installation partition plate (4) and the bottom of the pump body (1).

5. A water pump according to claim 4, wherein: the filter mechanism is a filter cylinder (19), the outer annular wall of filter cylinder (19) equipartition has the drainage micropore, filter cylinder (19) upper end is provided with water supply and gets into water inlet tank (20) inside filter cylinder (19), integrative extension has guide pipe (5) that supply filter cylinder (19) to pass above installation baffle (4), upwards extend in the pump body (1) bottom has interior threaded installation pipe (7), the outer annular wall bottom of filter cylinder (19) is provided with the second external screw thread with installation pipe (7) complex.

6. A water pump according to claim 5, wherein: a second one-way limiting mechanism which is arranged between the mounting clapboard (4) and the guide pipe (5) and can prevent water in the water containing cavity (38) from leaking to the outside of the pump body when the filter cartridge (19) is taken out is provided, the second one-way limiting mechanism comprises a second guide rod (35) which is symmetrically and vertically arranged on the mounting clapboard (4) at two sides of the guide pipe (5), a second limiting block (36) which is fixed at the upper end of the second guide rod (35), a second plug (21) which is guided to lift on the second guide rod (35) and is in sealing fit with the guide pipe (5), and a second abutting spring (37) which is sleeved on the second guide rod (35) between the second plug (21) and the mounting clapboard (4) and drives the second plug (21) to be in sealing fit with the guide pipe (5), when the filter cartridge (19) is installed with the installation pipe (7), the second plug (21) is far away from the guide pipe (5) and exposes the water inlet groove (20).

7. A water pump as claimed in claim 1, wherein: the first driving mechanism comprises a driven gear (29) which is arranged on the rotating shaft (8) between the matching disc (23) and the pump body (1) and is concentric with the rotating shaft (8), a first motor (27) which is arranged at the upper end of the pump body (1) and a driving gear (28) which is fixedly arranged on a motor shaft of the first motor (27) and is meshed with the driven gear (29).

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