CN111022338A

CN111022338A - Improved self-priming centrifugal pump

Info

Publication number: CN111022338A
Application number: CN201911382210.0A
Authority: CN
Inventors: 李宗顺
Original assignee: Fujian Haiqishi Pump Industry Co ltd
Current assignee: Fujian Haiqishi Pump Industry Co ltd
Priority date: 2019-12-28
Filing date: 2019-12-28
Publication date: 2020-04-17
Anticipated expiration: 2039-12-28
Also published as: CN111022338B

Abstract

The invention discloses an improved self-priming centrifugal pump, which comprises a pump seat, a pump shell, a pump body, an anti-blocking mechanism, a speed regulating mechanism and a water inlet mechanism, wherein a damping groove is formed in one side of the upper surface of the pump seat, an installation seat is connected to the inside of the damping groove in a sliding manner, and a pair of damping rods is fixedly connected to the lower surface of the installation seat, and the improved self-priming centrifugal pump has the advantages that: 1. the anti-blocking mechanism is arranged at the port of the water inlet pipe of the centrifugal pump, and the waterweeds can be prevented from flowing into the pump shell by utilizing the spiral blades with the winding rods and the baffle plates which are distributed in a crossed manner, so that the phenomenon that the whole centrifugal pump is blocked after being used for a period of time to influence the water discharge is avoided, and meanwhile, the centrifugal pump is protected to avoid being damaged due to the influence of the blockage; 2. through set up speed adjusting mechanism on the outlet pipe, utilize the ejector pin to push down and make the tube core and take place the displacement change between the tube hole of outlet pipe to reduce or increase the size of delivery port, thereby can regulate and control the velocity of flow and the flow of water, more do benefit to the use.

Description

Improved self-priming centrifugal pump

Technical Field

The invention relates to a centrifugal pump, in particular to an improved self-priming centrifugal pump, and belongs to the technical field of centrifugal pump equipment.

Background

The self-priming centrifugal pump can send water out due to the action of centrifugal force, the pump body and the water inlet pipe are required to be full of water to form a vacuum state before the water pump works, when the impeller rotates rapidly, the blades enable the water to rotate rapidly, the rotating water flies away from the impeller under the action of the centrifugal force, after the water in the pump is thrown out, the central part of the impeller forms a vacuum area, and the water is pressed into the water inlet pipe through a pipe network under the action of atmospheric pressure (or water pressure), so that continuous water pumping can be realized if the water circulates. The existing self-priming centrifugal pump is not provided with a good anti-blocking component, and after the existing self-priming centrifugal pump is used for a long time, aquatic weeds in a water body easily flow into a pump body, so that a water pump is blocked, the flow speed and the discharge capacity of the water body are influenced, the performance of the water pump can be influenced even, the water pump is seriously damaged due to the blockage, the flow size of the water body is not easily adjusted by the existing centrifugal pump, and the discharge capacity of the water pump can not be adjusted according to actual conditions.

Disclosure of Invention

The present invention is directed to an improved self-priming centrifugal pump to solve the above-mentioned problems of the prior art.

In order to solve the technical problems, the invention provides the following technical scheme:

the utility model provides an improved generation is from inhaling centrifugal pump, includes pump seat, pump case, the pump body, prevents blockking up mechanism, speed adjusting mechanism and mechanism of intaking, pump seat upper surface one side is equipped with the shock attenuation groove, the inside sliding connection of shock attenuation groove has the mount pad, a pair of shock attenuation pole of mount pad lower fixed surface is connected with, two the shock attenuation pole outside just is located equal fixedly connected with damping spring between mount pad lower surface and the shock attenuation inslot bottom surface, the mount pad upper surface is connected with the pump body, pump seat upper surface just is located pump body one side fixedly connected with pump case, be equipped with the mechanism of intaking between pump case and the pump body, the pump case top is equipped with prevents blockking up the mechanism, one side that the pump body was kept.

As a preferred technical scheme of the invention, the water inlet mechanism comprises a water inlet shell, a sealing cover, a pump shaft, a second sealing bearing, a sealing ring and an impeller, wherein the water inlet shell is fixedly connected between a pump body and a pump shell, the sealing cover is fixedly connected inside the water inlet shell, the output end of the pump body is in transmission connection with the pump shaft, one end, far away from the pump body, of the pump shaft penetrates through the water inlet shell, the sealing cover and the pump shell to extend into the pump shell and is fixedly connected with the impeller, one end, close to the pump shell, inside the water inlet shell is fixedly connected with the second sealing bearing, the second sealing bearing is fixedly sleeved on the pump shaft, a water inlet cavity and a water outlet cavity are arranged inside the pump shell, a partition plate is fixedly connected between the water inlet cavity and the water outlet cavity, and a first through hole is arranged.

As a preferred technical scheme of the invention, the anti-blocking mechanism comprises a vertical plate, a first motor, an anti-blocking pipe, a sewage discharge cover, a connecting pipe, a baffle plate, a crankshaft, a first sealing bearing, a helical blade, a winding rod and a filter screen, wherein the vertical plate is fixedly connected to the upper surface of the pump base and positioned on one side of the pump body, the first motor is fixedly connected to one side of the vertical plate, the anti-blocking pipe is fixedly connected to the other side of the vertical plate, the upper surface of the anti-blocking pipe is sealed and hinged with the sewage discharge cover, the connecting pipe is fixedly connected to one end of the anti-blocking pipe far away from the vertical plate, the connecting pipe is fixedly and penetratingly connected to the top end of the pump shell, the top end of the connecting pipe is detachably connected with a water inlet pipe through a flange, the filter screen is fixedly connected to the inner bottom end of the, the outer surface of the crankshaft is fixedly connected with a plurality of helical blades.

As a preferred technical scheme of the invention, the speed regulating mechanism consists of a speed regulating pipe, an upper pipe cover, a threaded sleeve, a threaded rod, a rotary table, an upper film cover, a bearing, a threaded hole, an ejector rod, a perforation, a pipe core, a reset spring, a silencing sleeve, a second through hole, a lower pipe cover, a lower film cover, a film disc and a film sheet, wherein a water outlet pipe is fixedly connected to one side of the pump shell away from the pump body and above a water outlet cavity, a pipe hole is formed in the water outlet pipe, the upper surface of the water outlet pipe is fixedly embedded with the speed regulating pipe, the top end of the speed regulating pipe is fixedly embedded with the upper pipe cover, the interior of the upper pipe cover is provided with the perforation, the top end of the upper pipe cover is fixedly connected with the threaded sleeve, the interior of the threaded sleeve is provided with the threaded hole, the interior of the threaded hole is in threaded, the inside fixedly connected with ejector pin of bearing, the one end that the bearing was kept away from to the ejector pin runs through perforation, speed governing pipe and outlet pipe and extends to the outside and fixedly connected with membrane dish of outlet pipe, fixedly connected with is located the inside tube core of speed governing pipe on the pole wall of ejector pin, just be located ejector pin outside fixedly connected with reset spring between bottom surface and the top tube cap bottom surface in the tube core, the outlet pipe bottom surface just is located under the tube core and fixedly inlays and is equipped with the lower tube cap, lower tube cap bottom surface fixedly connected with upper membrane lid, the ejector pin runs through lower tube cap and upper membrane lid setting, upper membrane lid fixed surface is connected with lower membrane lid down, the membrane dish sets up under between membrane lid inside and upper membrane lid, fixedly connected with diaphragm between membrane dish outer wall and the upper membrane lid inner wall.

As a preferred technical scheme of the invention, damping cotton is fixedly connected between the upper surface of the mounting seat and the pump body.

As a preferable technical scheme of the invention, the inner wall of one side of the pump shell, which is close to the pump body, is fixedly connected with a sealing ring positioned on the outer side of the pump shaft.

As a preferred technical scheme, a first sealing bearing is fixedly connected inside one end, close to the vertical plate, of the anti-blocking pipe, the first sealing bearing is fixedly sleeved on a machine shaft, and a plurality of winding rods are fixedly connected to the outer surface of the spiral blade.

As a preferable technical scheme of the invention, a plurality of baffles which are distributed in a staggered manner are fixedly connected to the inner wall of the connecting pipe and positioned above the crankshaft.

As a preferred technical scheme of the invention, a silencing sleeve is fixedly connected between the lower surface of the speed regulating pipe and the inner wall of the water outlet pipe inside the pipe hole, and a plurality of second through holes are formed in the silencing sleeve.

The invention has the following beneficial effects:

1. the anti-blocking mechanism is arranged at the port of the water inlet pipe of the centrifugal pump, and the waterweeds can be prevented from flowing into the pump shell by utilizing the spiral blades with the winding rods and the baffle plates which are distributed in a crossed manner, so that the phenomenon that the whole centrifugal pump is blocked after being used for a period of time to influence the water discharge is avoided, and meanwhile, the centrifugal pump is protected to avoid being damaged due to the influence of the blockage;

2. through set up speed adjusting mechanism on the outlet pipe, utilize the ejector pin to push down and make the tube core and take place the displacement change between the tube hole of outlet pipe to reduce or increase the size of delivery port, thereby can regulate and control the velocity of flow and the flow of water, more do benefit to the use.

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 schematic structural view of a first embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of the pump mount of the present invention;

FIG. 3 is a cross-sectional view of the anti-jam mechanism of the present invention;

FIG. 4 is a cross-sectional view of the governor mechanism of the present invention;

FIG. 5 is a cross-sectional view of the water intake mechanism and pump housing of the present invention;

FIG. 6 is a schematic structural view of a second embodiment of the present invention;

FIG. 7 is a partial schematic view of a first perspective of the anti-jam mechanism;

FIG. 8 is a partial schematic structural view from a second perspective of the anti-jam mechanism;

fig. 9 is a partial structural view from a third perspective of the anti-jamming mechanism.

In the figure: 1. a pump mount; 11. a damping groove; 12. a mounting seat; 13. damping cotton; 14. a shock-absorbing lever; 15. a damping spring; 2. a pump housing; 21. a water outlet cavity; 22. a water inlet cavity; 23. a partition plate; 24. a first through hole; 3. a pump body; 4. an anti-clogging mechanism; 41. a vertical plate; 42. a first motor; 43. an anti-clogging tube; 44. a sewage draining cover; 45. a connecting pipe; 46. a baffle plate; 47. a crankshaft; 48. a first seal bearing; 49. a helical blade; 410. a winding rod; 411. a filter screen; 401. a first gear roller; 4011. a first gear; 4012. a second gear; 4013. a first gear shaft; 402. a second gear roller; 4021. a third gear; 4022. a fourth gear; 4023. a second gear shaft; 403. an anti-blocking operating belt; 4031. a water permeable through hole; 4032. a first chain; 4033. a second chain; 4034. a mesh belt; 404. a second motor; 5. a speed regulating mechanism; 51. a speed regulating pipe; 52. a pipe cover is arranged; 53. a threaded sleeve; 54. a threaded rod; 55. a turntable; 56. covering with a film; 57. a bearing; 58. a threaded hole; 59. a top rod; 510. perforating; 511. a die; 512. a return spring; 513. a silencing sleeve; 514. a second through hole; 515. a lower pipe cover; 516. a lower film cover; 517. a membrane disc; 518. a membrane; 6. a water inlet mechanism; 61. a water inlet shell; 62. sealing the cover; 63. a pump shaft; 64. a second sealed bearing; 65. a seal ring; 66. an impeller; 7. a water inlet pipe; 71. a water inlet; 711. a first lip; 712. a second lip; 713. a guide roller; 8. a water outlet pipe; 81. the tube hole.

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.

Example (b): as shown in fig. 1-9, the invention relates to an improved self-priming centrifugal pump, which comprises a pump base 1, a pump case 2, a pump body 3, an anti-clogging mechanism 4, a speed regulation mechanism 5 and a water inlet mechanism 6, wherein a damping groove 11 is arranged on one side of the upper surface of the pump base 1, an installation base 12 is connected in the damping groove 11 in a sliding manner, a pair of damping rods 14 are fixedly connected to the lower surface of the installation base 12, damping springs 15 are fixedly connected between the lower surfaces of the installation base 12 and the inner bottom surface of the damping groove 11 at the outer sides of the two damping rods 14, the pump body 3 is fixedly connected to the upper surface of the installation base 12, the pump case 2 is fixedly connected to the upper surface of the pump base 1 and located on one side of the pump body 3, the water inlet mechanism 6 is arranged between the pump case 2 and the.

The water inlet mechanism 6 comprises a water inlet shell 61, a sealing cover 62, a pump shaft 63, a second sealing bearing 64, a sealing ring 65 and an impeller 66, wherein the water inlet shell 61 is fixedly connected between the pump body 3 and the pump shell 2, the sealing cover 62 is fixedly connected inside the water inlet shell 61, the output end of the pump body 3 is in transmission connection with the pump shaft 63, one end, far away from the pump body 3, of the pump shaft 63 penetrates through the water inlet shell 61, the sealing cover 62 and the pump shell 2 extend into the pump shell 2 and are fixedly connected with the impeller 66, one end, close to the pump shell 2, inside the water inlet shell 61 is fixedly connected with the second sealing bearing 64, the second sealing bearing 64 is fixedly sleeved on the pump shaft 63, the inside of the pump shell 2 is provided with a water inlet cavity 22 and a water outlet cavity 21, a partition plate 23 is fixedly connected between the water inlet cavity 22 and the water outlet cavity.

Wherein, the anti-blocking mechanism 4 comprises a vertical plate 41, a first motor 42, an anti-blocking pipe 43, a sewage discharge cover 44, a connecting pipe 45, a baffle 46, a crankshaft 47, a first sealing bearing 48, a helical blade 49, a winding rod 410 and a filter screen 411, the upper surface of the pump base 1 and one side of the pump body 3 are fixedly connected with the vertical plate 41, one side of the vertical plate 41 is fixedly connected with the first motor 42, the other side of the vertical plate 41 is fixedly connected with the anti-blocking pipe 43, the upper surface of the anti-blocking pipe 43 is sealed and hinged with the sewage discharge cover 44, one end of the anti-blocking pipe 43 far away from the vertical plate 41 is fixedly connected with the connecting pipe 45, the connecting pipe 45 is fixedly and penetratingly connected with the top end of the pump shell 2, the top end of the connecting pipe 45 is detachably connected with the water inlet pipe 7 through a flange, the inner bottom end of the connecting pipe 45 is fixedly connected with the filter screen 411, the output, a plurality of helical blades 49 are fixedly connected to the outer surface of the crankshaft 47.

Preferably, the second embodiment of the anti-clogging mechanism 4 comprises a first gear roller 401, a second gear roller 402, an anti-clogging operation belt 403 connected between the first gear roller 401 and the second gear roller 402, and a second motor 404 for driving the first gear roller 401 to rotate; the water inlet pipe 7 is provided with a water inlet 71, and the anti-blocking operation belt 403 is blocked at the water inlet 71; the anti-clogging operation belt 403 is provided with a plurality of water permeable through holes 4031. In the actual working process of the anti-blocking device, the first gear roller 401 and the second gear roller 402 drive the anti-blocking operation belt 403 to operate, when water enters from the water inlet 71, sundries such as aquatic weeds and the like in the water can be scraped beside by the anti-blocking operation belt 403, the water cannot enter the water inlet 71 to damage the pump body 3 and the like, the water cannot enter the water inlet 4031 in a blocking mode, the water cannot enter the water inlet 71 from the water through 4031 of the anti-blocking operation belt 403 smoothly.

Preferably, the first gear roller 401 includes a first gear 4011, a second gear 4012, and a first gear shaft 4013 connected between the first gear 4011 and the second gear 4012; the second gear roller 402 includes a gear three 4021, a gear four 4022, and a second gear shaft 4023 connected between the gear three 4021 and the gear four 4022; the first gear shaft 4013 is parallel to the second gear shaft 4023; anti-blocking operation belt 403 includes first chain 4032 connected between first gear 4011 and third gear 4021, second chain 4033 connected between second gear 4012 and fourth gear 4022, and mesh belt 4034 connected between first chain 4032 and second chain 4033; the water permeable through holes 4031 are formed on the mesh belt 4034.

Preferably, the water inlet 71 is obliquely arranged, and the anti-blocking operation belt 403 is arranged in parallel with the plane of the water inlet 71. When the anti-blocking operation belt 403 arranged obliquely runs, sundries such as aquatic weeds can be more easily scraped to a place far away from the water inlet 71.

Preferably, the anti-clogging running belt 403 has a close belt close to the water inlet 71, and a far belt far from the water inlet 71; the water inlet 71 is rectangular, and the water inlet 71 comprises a first opening edge 711 which is arranged at the tip end of the water inlet pipe 7 and is vertical to the moving direction of the anti-blocking operation belt 403, and a second opening edge 712 which is arranged at the opposite side of the first opening edge 711; the second motor 404 drives the proximity belt from the first port edge 711 toward the second port edge 712. Thus, the far-away belt runs towards the far-away end, and sundries such as aquatic weeds can be thrown away from the far-away position.

Preferably, the first opening edge 711 and the second opening edge 712 are both provided with guide rollers 713 which are in contact with the approaching belt, so that the water inlet 71 can be in close contact with the approaching belt, impurities such as aquatic plants can be prevented from entering, meanwhile, the water inlet 71 can be in rolling contact with the anti-blocking operation belt 403, and the operation is smoother.

Preferably, the second motor 404 drives the first gear shaft 4013 through a reduction gear box or a belt.

Preferably, the second motor 404 is connected to the connection pipe through a motor base.

Wherein, the speed adjusting mechanism 5 comprises a speed adjusting pipe 51, an upper pipe cover 52, a threaded sleeve 53, a threaded rod 54, a rotary disc 55, an upper film cover 56, a bearing 57, a threaded hole 58, a mandril 59, a perforation 510, a pipe core 511, a reset spring 512, a silencing sleeve 513, a second through hole 514, a lower pipe cover 515, a lower film cover 516, a film disc 517 and a film 518, one side of the pump shell 2 far away from the pump body 3 is fixedly connected with a water outlet pipe 8 above the water outlet cavity 21, a pipe hole 81 is arranged inside the water outlet pipe 8, the upper surface of the water outlet pipe 8 is fixedly embedded with the speed adjusting pipe 51, the top end of the speed adjusting pipe 51 is fixedly embedded with the upper pipe cover 52, the interior of the upper pipe cover 52 is provided with the perforation 510, the top end of the upper pipe cover 52 is fixedly connected with the threaded sleeve 53, the interior of the threaded sleeve 53 is provided with the, threaded rod 54 bottom fixedly connected with bearing 57, the inside fixedly connected with ejector pin 59 of bearing 57, the one end that bearing 57 was kept away from to ejector pin 59 runs through perforation 510, speed governing pipe 51 and outlet pipe 8 extend to outlet pipe 8 outside and fixedly connected with membrane disc 517, fixedly connected with is located the inside die 511 of speed governing pipe 51 on the pole wall of ejector pin 59, just be located ejector pin 59 outside fixedly connected with reset spring 512 between bottom surface and the upper tube lid 52 bottom surface in the die 511, outlet pipe 8 bottom surface just is located under the die 511 and fixedly inlays and is equipped with lower tube lid 515, lower tube lid 515 bottom surface fixedly connected with upper membrane lid 56, ejector pin 59 runs through lower tube lid 515 and upper membrane lid 56 setting, upper membrane lid 56 lower surface fixedly connected with lower membrane lid 516, membrane disc 517 sets up between the inside of lower membrane lid 516 and upper membrane lid 56, fixedly connected with diaphragm 518 between the outer wall of membrane disc 517 and the upper membrane lid 56 inner.

Wherein, the shock-absorbing cotton 13 is fixedly connected between the upper surface of the mounting seat 12 and the pump body 3, and the shock-absorbing function is increased.

Wherein, the pump case 2 is close to the sealing washer 65 that is located the pump shaft 63 outside the one side inner wall fixedly connected with of the pump body 3, avoids water to omit to the pump body 3 in, increases the leakproofness.

Wherein, prevent that stifled pipe 43 is close to the inside fixedly connected with of one end of riser 41 sealed bearing 48 No. one, sealed bearing 48 fixes the cover on spindle 47 No. one, and helical blade 49 surface fixedly connected with has a plurality of winding poles 410, also guarantees when increasing the leakproofness that the pasture and water in the connecting pipe 45 can be transmitted to in the stifled pipe 43 by winding pole 410.

Wherein, the inner wall of the connecting pipe 45 and above the crankshaft 47 are fixedly connected with a plurality of baffles 46 which are distributed in a staggered way, so as to reduce the flow of the aquatic weeds into the connecting pipe 45.

Wherein, the pipe hole 81 is inside and be located fixedly connected with amortization cover 513 between speed governing pipe 51 lower surface and the outlet pipe 8 inner wall, is equipped with a plurality of No. two through-holes 514 on the amortization cover 513, plays the amortization function.

Specifically, when the invention is used, the pump body 3 can be damped to a certain extent through the damping rod 14, the damping spring 15 and the damping cotton 13, when a water body flows into the connecting pipe 45 from the water inlet pipe 7, the first motor 42 operates to drive the crankshaft 47 to rotate, the helical blades 49 and the winding rod 410 convey aquatic plants in the water body into the anti-blocking pipe 43, so that the connecting pipe 45 can be prevented from being blocked by the aquatic plants, meanwhile, the filter screen 411 and the baffle 46 can also play a certain anti-blocking role, finally, the aquatic plants in the anti-blocking pipe 43 can be taken out through the blowdown cover 44, after the water body flows into the pump shell 2, the pump body 3 is started to drive the impeller 66 to rotate, so that the water body flows into the water outlet cavity 21 through the one through hole 24 of the partition plate 23 and then flows out of the water outlet pipe 8, and in the process of flowing out of the water outlet pipe 8, the threaded rod 54 can be moved downwards through, therefore, the pipe core 511 is propped to descend, the contact area between the second through hole 514 of the silencing sleeve 513 and the water body can be reduced, the flow velocity of the water body is further reduced, the water body can be even closed to flow out of the pipe hole 81, the speed regulating mechanism 5 can be regulated as required, and the outflow rate and the outflow quantity of the water body are reduced.

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. An improved self-priming centrifugal pump is characterized by comprising a pump base (1), a pump shell (2), a pump body (3), an anti-blocking mechanism (4), a speed regulating mechanism (5) and a water inlet mechanism (6), wherein a damping groove (11) is formed in one side of the upper surface of the pump base (1), an installation base (12) is connected to the inside of the damping groove (11) in a sliding mode, a pair of damping rods (14) are fixedly connected to the lower surface of the installation base (12), damping springs (15) are fixedly connected between the outer side of the two damping rods (14) and the lower surface of the installation base (12) and the inner bottom surface of the damping groove (11), the pump body (3) is fixedly connected to the upper surface of the installation base (12), the pump shell (2) is fixedly connected to the upper surface of the pump base (1) and the side of the pump body (3), the water inlet mechanism (6) is arranged between, the anti-blocking pump is characterized in that an anti-blocking mechanism (4) is arranged at the top end of the pump shell (2), and a speed regulating mechanism (5) is arranged on one side, far away from the pump body (3), of the pump shell (2).

2. The improved self-priming centrifugal pump according to claim 1, wherein the water inlet mechanism (6) is composed of a water inlet shell (61), a sealing cover (62), a pump shaft (63), a second sealing bearing (64), a sealing ring (65) and an impeller (66), the water inlet shell (61) is fixedly connected between the pump body (3) and the pump shell (2), the sealing cover (62) is fixedly connected inside the water inlet shell (61), the output end of the pump body (3) is in transmission connection with the pump shaft (63), one end, far away from the pump body (3), of the pump shaft (63) penetrates through the water inlet shell (61), the sealing cover (62) and the pump shell (2) and extends into the pump shell (2) and is fixedly connected with the impeller (66), the second sealing bearing (64) is fixedly connected to one end, close to the pump shell (2), inside the water inlet shell (61), and the second sealing bearing (64) is fixedly sleeved on the pump shaft (63), the pump shell (2) is internally provided with a water inlet cavity (22) and a water outlet cavity (21), a partition plate (23) is fixedly connected between the water inlet cavity (22) and the water outlet cavity (21), and a first through hole (24) is formed in the position, above the impeller (66), of the partition plate (23).

3. The improved self-priming centrifugal pump according to claim 1, wherein the anti-clogging mechanism (4) comprises a vertical plate (41), a first motor (42), an anti-clogging tube (43), a dirt discharge cover (44), a connecting tube (45), a baffle (46), a crankshaft (47), a first sealing bearing (48), a helical blade (49), a winding rod (410) and a filter screen (411), the vertical plate (41) is fixedly connected to one side of the pump body (3) on the upper surface of the pump base (1), the first motor (42) is fixedly connected to one side of the vertical plate (41), the anti-clogging tube (43) is fixedly connected to the other side of the vertical plate (41), the dirt discharge cover (44) is hermetically hinged to the upper surface of the anti-clogging tube (43), the connecting tube (45) is fixedly connected to one end of the anti-clogging tube (43) far away from the vertical plate (41), and the connecting tube (45) is fixedly connected to the top end of the pump case (2, connecting pipe (45) top can be dismantled through the flange and be connected with inlet tube (7), bottom end fixedly connected with filter screen (411) in connecting pipe (45), shaft coupling fixedly connected with spindle (47) is passed through to the output of first motor (42), the one end that first motor (42) were kept away from in spindle (47) runs through riser (41) and prevents that jam pipe (43) extends to inside connecting pipe (45), a plurality of helical blade (49) of spindle (47) outer fixed surface connection.

4. The improved self-priming centrifugal pump of claim 1, wherein the speed regulating mechanism (5) is composed of a speed regulating tube (51), an upper tube cover (52), a threaded sleeve (53), a threaded rod (54), a rotary table (55), an upper membrane cover (56), a bearing (57), a threaded hole (58), a push rod (59), a perforation (510), a tube core (511), a reset spring (512), a noise reduction sleeve (513), a second through hole (514), a lower tube cover (515), a lower membrane cover (516), a membrane disc (517) and a membrane (518), a water outlet tube (8) is fixedly connected to one side of the pump shell (2) far away from the pump body (3) and above the water outlet cavity (21), a tube hole (81) is formed in the water outlet tube (8), the speed regulating tube (51) is fixedly embedded in the upper surface of the water outlet tube (8), the upper tube cover (52) is fixedly embedded in the top end of the speed regulating tube (, the pipe joint is characterized in that a through hole (510) is formed in the upper pipe cover (52), a threaded sleeve (53) is fixedly connected to the top end of the upper pipe cover (52), a threaded hole (58) is formed in the threaded sleeve (53), a threaded rod (54) is connected to the internal thread of the threaded hole (58), the top end of the threaded rod (54) penetrates through the threaded sleeve (53) and extends to the outside of the threaded sleeve (53) and is fixedly connected with a turntable (55), a bearing (57) is fixedly connected to the bottom end of the threaded rod (54), a push rod (59) is fixedly connected to the inside of the bearing (57), one end, far away from the bearing (57), of the push rod (59) penetrates through the through hole (510), the speed regulating pipe (51) and the water outlet pipe (8) and is fixedly connected with a film disc (517), and a pipe core (511) located inside the speed regulating, the utility model discloses a membrane bioreactor, including the pipe core (511), the bottom surface just is located ejector pin (59) outside fixedly connected with reset spring (512) between interior bottom surface of pipe core (511) and last tube cap (52) bottom surface, outlet pipe (8) bottom surface just is located pipe core (511) under fixed the inlaying be equipped with lower tube cap (515), lower tube cap (515) bottom surface fixedly connected with goes up membrane lid (56), ejector pin (59) run through lower tube cap (515) and last membrane lid (56) setting, go up membrane lid (56) lower surface fixedly connected with lower membrane lid (516), membrane dish (517) set up under between membrane lid (516) inside and last membrane lid (56) inside, fixedly connected with membrane (518) between membrane dish (517) outer wall and last membrane lid (56) inner wall.

5. An improved self-priming centrifugal pump according to claim 1, characterized in that a damping cotton (13) is fixedly connected between the upper surface of the mounting seat (12) and the pump body (3).

6. An improved self-priming centrifugal pump according to claim 2, characterized in that the inner wall of the pump casing (2) close to the pump body (3) is fixedly connected with a sealing ring (65) positioned outside the pump shaft (63).

7. The improved self-priming centrifugal pump of claim 3, wherein a first sealing bearing (48) is fixedly connected to the inner portion of one end, close to the vertical plate (41), of the anti-blocking pipe (43), the first sealing bearing (48) is fixedly sleeved on the crankshaft (47), and a plurality of winding rods (410) are fixedly connected to the outer surface of the spiral blade (49).

8. An improved self-priming centrifugal pump according to claim 3, characterized in that a plurality of baffles (46) distributed in a staggered manner are fixedly connected to the inner wall of said connecting pipe (45) above the crankshaft (47).

9. The improved self-priming centrifugal pump as claimed in claim 4, wherein a silencing sleeve (513) is fixedly connected between the lower surface of the speed regulating pipe (51) and the inner wall of the water outlet pipe (8) inside the pipe hole (81), and a plurality of second through holes (514) are formed in the silencing sleeve (513).