CN113833664A

CN113833664A - Water storage type centrifugal pump

Info

Publication number: CN113833664A
Application number: CN202111004269.3A
Authority: CN
Inventors: 汪卫平; 唐子一; 李建新; 黄文龙; 汪渌; 吴海洋
Original assignee: Anhui Kaite Pump Co ltd
Current assignee: Anhui Kaite Pump Co ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2021-12-24
Anticipated expiration: 2041-08-30
Also published as: CN113833664B

Abstract

A water storage centrifugal pump comprising: the pump comprises a base, a pump body and a motor; the motor drives the impeller to rotate, so that suction pressure is generated in the pump body, after the centrifugal pump is installed and used for the first time, water needs to be added into the pump body to ensure that the centrifugal pump is normally opened, negative pressure is generated in the seal tank under the action of suction pressure at a water inlet of the pump body, water enters the seal tank from the upper end of the vertical conduit pipe through the water inlet conduit pipe and then enters the pump body from the water inlet, after the centrifugal pump is closed, the water in the vertical conduit pipe flows out through siphon of the water inlet conduit pipe connecting pipeline, because the upper end of the vertical conduit pipe is higher than the water inlet, water at the lower part of the upper end of the vertical conduit pipe is effectively prevented from flowing back to the vertical conduit pipe, so that part of water is stored in the seal tank, when the centrifugal pump is opened again, the water in the seal tank can directly flow into the water inlet, and frequent water adding is not needed.

Description

Water storage type centrifugal pump

Technical Field

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

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.

When the centrifugal pump was used to the pumping, when shutting down, because the siphon effect of water, can be with the water in the centrifugal pump chamber by water inlet department suction, when opening the centrifugal pump once more, need add water again in the centrifugal pump chamber to prevent that the centrifugal pump from starting idle running, this kind of mode is started at every turn and all need add water operation, and is comparatively loaded down with trivial details.

Disclosure of Invention

The invention aims to solve the problem that water needs to be added into a pump cavity when a centrifugal pump is started every time, and the operation is complicated, and provides a water storage type centrifugal pump.

The technical problem to be solved by the invention is realized by adopting the following technical scheme:

a water storage centrifugal pump comprising:

the pump comprises a base, a pump body and a motor;

the pump body and the motor are both arranged on the base, an impeller shaft is arranged on the pump body, an impeller is arranged at one end of the impeller shaft, and the other end of the impeller shaft is connected with an output shaft of the motor;

be equipped with water inlet and delivery port on the pump body, water inlet department connects the seal pot, be fixed with the pipe of intaking on the seal pot, pipe one end of intaking is located the seal pot outside, and the other end stretches into the lower extreme that is connected with vertical pipe in the seal pot, the upper end of vertical pipe is located water inlet upper portion, slidable mounting has the board of floating in the seal pot, the board slip ring of floating is outside at vertical pipe, vertical pipe upper end is equipped with the end cover, be equipped with the mouth that falls into water on the end cover, be equipped with the perforation on the board of floating, the end cover lower part is fixed with the check spring, the check spring lower extreme is fixed with the seal ring board, the seal ring board is located perforation upper portion.

Furthermore, a filter screen is arranged at the water inlet.

Further, a transmission case is installed on the base, the impeller shaft penetrates through the transmission case, a middle shaft is installed on the transmission case, the impeller shaft is connected with the middle shaft through a gear, the lower end of the middle shaft penetrates out of the transmission case, a bottom shaft is installed on the base and connected with the middle shaft through a gear, a transmission shaft is rotatably installed at the bottom of the sealing tank, the lower end of the transmission shaft is connected with the bottom shaft through a gear, a support sleeve is sleeved on a fixing ring on the transmission shaft, a sand discharging hopper is arranged at the lower part of the sealing tank, the support sleeve is positioned inside the sand discharging hopper, partition plates are arranged outside the support sleeve in an annular array, a support ring is fixed at the outer end side of each partition plate, the upper parts of the partition plates are in contact with the lower bottom surface of the sealing tank, a blanking hole is formed in the lower bottom surface of the sealing tank, a sand discharging hole is formed in the bottom of the sand discharging hopper, and the track of the gaps between two adjacent partition plates when the two partition plates rotate around the transmission shaft passes through the blanking hole and the sand discharging hole, the sand discharge holes and the blanking holes are arranged in a staggered mode.

Furthermore, a positioning shaft is fixed on the outer side of a support between two adjacent isolation plates, two deflection plates are hinged on the positioning shaft, a baffle is fixed at the upper end of the positioning shaft, the upper end side of each deflection plate is arranged to be close to the lower end face of the baffle, the upper end face of the baffle and the upper end side of each isolation plate are on the same horizontal plane, the outer end side of each deflection plate is arranged to be close to the inner side face of the support ring, a traction spring is arranged between the two deflection plates, guide grooves are respectively arranged on one sides, close to the two deflection plates, of the two deflection plates, a moving rod is slidably arranged in each guide groove, a push rod is fixed on each moving rod and slidably arranged on the support ring, a buffer wheel is fixed at one end, located outside the support ring, of each push rod, contacts the inner side wall of the sand discharge hopper, a jacking convex block is arranged on the inner side wall of the sand discharge hopper, and when each buffer wheel contacts the jacking convex block, gaps between the two isolation plates are staggered with the sand discharge holes and the blanking holes, the support sleeve between two adjacent division boards is provided with a one-way valve, the transmission shaft is hollow, the one-way valve is connected with the hollow inside of the transmission shaft, and the upper end of the transmission shaft is higher than the upper end of the vertical conduit.

Furthermore, sealing strips are arranged on the upper end side and the lower end side of the isolation plate.

The invention has the beneficial effects that:

the centrifugal pump is simple in structure, the impeller is driven by the motor to rotate, so that suction pressure is generated in the pump body, after the centrifugal pump is installed and used for the first time, water needs to be added into the pump body to ensure that the centrifugal pump is normally opened, negative pressure is generated in the sealed tank under the action of suction pressure of the water inlet of the pump body, water enters the sealed tank from the water inlet pipe through the upper end of the vertical pipe and then enters the pump body from the water inlet, after the centrifugal pump is closed, the water in the vertical pipe flows out due to the fact that the upper end of the vertical pipe is higher than the water inlet in a siphoning mode, water at the lower portion of the upper end of the vertical pipe is effectively prevented from flowing back to the vertical pipe, and therefore part of water is stored in the sealed tank, when the centrifugal pump is opened again, the water in the sealed tank can directly flow into the water inlet, and frequent water adding is not needed.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a cross-sectional view of the seal can of the present invention;

FIG. 3 is a structural view of a sand hopper of the present invention;

FIG. 4 is a schematic view of the deflector plate installation of the present invention;

in the figure: 1. a base; 2. a pump body; 3. a motor; 12. an impeller shaft; 13. an impeller; 21. a water inlet; 22. A water outlet; 23. sealing the tank; 24. a water inlet conduit; 25. a vertical conduit; 26. a floating plate; 27. an end cap; 28. a water falling port; 29. perforating; 30. a non-return spring; 31. a seal ring plate; 41. a filter screen; 42. a transmission case; 43. an intermediate shaft; 44. a bottom shaft; 45. a drive shaft; 46. a support sleeve; 47. a separator plate; 48. A support ring; 49. a blanking hole; 50. a sand discharge hole; 51. a sealing strip; 52. a sand discharge hopper; 61. positioning the shaft; 62. a deflection plate; 63. a baffle plate; 64. a traction spring; 65. a guide groove; 66. a travel bar; 67. a top rod; 68. a buffer wheel; 69. pressing the convex block; 70. a one-way valve.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.

Example 1

As shown in fig. 1; a water storage centrifugal pump comprising:

the device comprises a base 1, a pump body 2 and a motor 3;

the pump body 2 and the motor 3 are both arranged on the base 1, the pump body 2 is provided with an impeller shaft 12, one end of the impeller shaft 12 is provided with an impeller 13, and the other end of the impeller shaft is connected with an output shaft of the motor 3;

the pump body 2 is provided with a water inlet 21 and a water outlet 22, the water inlet 21 is connected with a seal tank 23, a water inlet guide pipe 24 is fixed on the seal tank 23, one end of the water inlet guide pipe 24 is positioned outside the seal tank 23, the other end of the water inlet guide pipe extends into the seal tank 23 and is connected with the lower end of a vertical guide pipe 25, the upper end of the vertical guide pipe 25 is positioned on the upper portion of the water inlet 21, a floating plate 26 is slidably mounted in the seal tank 23, the floating plate 26 is sleeved outside the vertical guide pipe 25 in a sliding mode, an end cover 27 is arranged on the upper end of the vertical guide pipe 25, a water falling port 28 is arranged on the end cover 27, a through hole 29 is formed in the floating plate 26, a check spring 30 is fixed on the lower portion of the end cover 27, a seal ring plate 31 is fixed on the lower end of the check spring 30, and the seal ring plate 31 is positioned on the upper portion of the through hole 29.

The motor 3 drives the impeller 13 to rotate, so that suction pressure is generated in the pump body 2, and after the centrifugal pump is installed, when the centrifugal pump is used for the first time, water needs to be added into the pump body 2 to ensure that the centrifugal pump is normally started, under the suction pressure action of the water inlet 21 of the pump body 2, negative pressure is generated in the seal tank 23, water enters the seal tank 23 from the water inlet guide pipe 24 through the upper end of the vertical guide pipe 25 and then enters the pump body 2 from the water inlet 21, when the centrifugal pump is closed, the water inlet conduit 24 is connected with the pipeline for siphoning so that the water in the vertical conduit 25 flows out, because the upper end of the vertical conduit 25 is higher than the water inlet 21, the water at the lower part of the upper end of the vertical conduit 25 is effectively prevented from flowing back to the vertical conduit 25, thereby storing part of the water in the sealed tank 23, when the centrifugal pump is turned on again, the water in the seal tank 23 can flow into the water inlet 21 without adding water frequently.

Example 2

On the basis of example 1, as shown in FIGS. 1-3; a filter screen 41 is arranged at the water inlet 21.

The base 1 is provided with a transmission case 42, the impeller shaft 12 passes through the transmission case 42, the transmission case 42 is provided with an intermediate shaft 43, the impeller shaft 12 is connected with the intermediate shaft 43 through a gear, the lower end of the intermediate shaft 43 penetrates out of the transmission case 42, the base 1 is provided with a bottom shaft 44, the bottom shaft 44 is connected with the intermediate shaft 43 through a gear, the bottom of the seal pot 23 is rotatably provided with a transmission shaft 45, the lower end of the transmission shaft 45 is connected with the bottom shaft 44 through a gear, a support sleeve 46 is fixedly sleeved on the transmission shaft 45, the lower part of the seal pot 23 is provided with a sand discharge hopper 52, the support sleeve 46 is positioned inside the sand discharge hopper 52, the outside of the support sleeve 46 is provided with partition plates 47 in an annular array, the outer end sides of the partition plates 47 are fixedly provided with support rings 48, the upper parts of the partition plates 47 are in contact with the lower bottom surface of the seal pot 23, the lower bottom surface of the seal pot 23 is provided with blanking holes 49, the bottom of the sand discharge hopper 52 is provided with sand discharge holes 50, the tracks of the gaps between two adjacent partition plates 47 when rotating around the transmission shaft 45 pass through the blanking holes 49 and the sand discharge holes 50, the sand discharge holes 50 and the blanking holes 49 are arranged in a staggered mode.

The upper and lower end sides of the partition plate 47 are provided with weather strips 51.

The filter screen 41 is arranged at the water inlet 21, water entering the water inlet 21 in the seal tank 23 can be filtered, silt is prevented from entering the interior of the pump body 2, the filtered silt is stored in the seal tank 23 and is precipitated at the bottom of the seal tank 23, the impeller shaft 12 is utilized to drive the intermediate shaft 43 to rotate, the intermediate shaft 43 drives the bottom shaft 44 to rotate, so that the transmission shaft 45 rotates, the transmission shaft 45 drives the support sleeve 46, the partition plates 47 and the support ring 48 to rotate together, when a gap between two adjacent partition plates 47 is opposite to the blanking hole 49, the silt precipitated in the seal tank 23 flows into the gap between the two partition plates 47 and moves along with the movement of the partition plates 47, when the gap between the two partition plates 47 moves to be opposite to the position of the sand discharge hole 50, the silt flowing into the two partition plates 47 can be discharged from the sand discharge hole 50, and because the upper ends of the partition plates 47 contact with the lower bottom surface of the seal tank 23, the lower end contacts the lower bottom surface of the sand discharge hopper 52, so that the sand discharge hole 50 and the blanking hole 49 are isolated from each other, and the sealing property in the seal tank 23 is ensured.

Example 3

On the basis of example 2, as shown in FIGS. 1-4; a positioning shaft 61 is fixed on the outer side of the support between two adjacent isolation plates 47, two deflection plates 62 are hinged on the positioning shaft 61, a baffle plate 63 is fixed on the upper end of the positioning shaft 61, the upper end side of each deflection plate 62 is tightly attached to the lower end face of the baffle plate 63, the upper end face of the baffle plate 63 and the upper end side of the isolation plate 47 are on the same horizontal plane, the outer end side of each deflection plate 62 is tightly attached to the inner side face of the support ring 48, a traction spring 64 is arranged between the two deflection plates 62, a guide groove 65 is respectively arranged on one side of each deflection plate 62 close to each other, a moving rod 66 is slidably arranged in the guide groove 65, a mandril 67 is fixed on the moving rod 66, the mandril 67 is slidably arranged on the support ring 48, a buffer wheel 68 is fixed on one end of the mandril 67 outside the support ring 48, the buffer wheel 68 contacts the inner side wall of the sand discharge hopper 52, a jacking bump 69 is arranged on the inner side wall of the sand discharge hopper 52, when the buffer wheel 68 contacts the jacking bump 69, a gap between the two isolation plates 47 is staggered with the sand discharge hole 50 and the blanking hole 49, the support sleeve 46 between two adjacent isolation plates 47 is provided with a one-way valve 70, the transmission shaft 45 is hollow, the one-way valve 70 is connected with the hollow inside of the transmission shaft 45, and the upper end of the transmission shaft 45 is higher than the upper end of the vertical conduit 25.

The division plate 47 drives the support ring 48 to rotate, and then drives the ejector rod 67 and the buffer wheel 68 to move together, in the moving process, the buffer wheel 68 contacts the inner side wall of the sand discharging hopper, when the buffer wheel 68 contacts the ejector protrusion 69, the ejector rod 67 is extruded by the ejector protrusion 69, so that the ejector rod 67 moves towards the center of the circle of the support ring 48, the ejector rod 67 pushes the moving rod 66 to move, the moving rod 66 pushes the included angle between the two deflection plates 62 to increase, the deflection plates 62 extrude the sand between the deflection plates 62 and the division plate 47, water contained in the sand enters the hollow structure of the transmission shaft 45 by the extrusion of the check valve 70, and then flows back to the inside of the seal tank 23 from the upper end of the transmission shaft 45.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A water storage centrifugal pump, comprising:

the pump comprises a base, a pump body and a motor;

2. A water storage centrifugal pump as claimed in claim 1, wherein a filter screen is mounted at the water inlet.

3. The water storage centrifugal pump according to claim 2, wherein the base is provided with a transmission case, the impeller shaft passes through the transmission case, the transmission case is provided with an intermediate shaft, the impeller shaft is connected with the intermediate shaft through a gear, the lower end of the intermediate shaft penetrates out of the transmission case, the base is provided with a bottom shaft, the bottom shaft is connected with the intermediate shaft through a gear, the bottom of the sealing tank is rotatably provided with a transmission shaft, the lower end of the transmission shaft is connected with the bottom shaft through a gear, a fixing ring on the transmission shaft is sleeved with a supporting sleeve, the lower part of the sealing tank is provided with a sand discharge hopper, the supporting sleeve is positioned inside the sand discharge hopper, the outer part of the supporting sleeve is provided with partition plates in an annular array, the outer end sides of the partition plates are fixed with supporting rings, the upper parts of the partition plates contact with the lower bottom surface of the sealing tank, and the lower bottom surface of the sealing tank is provided with blanking holes, arrange husky fill bottom and be equipped with the sediment outflow hole, the orbit when the clearance between two adjacent division boards rotates around the transmission shaft is through blanking hole and sediment outflow hole, sediment outflow hole and blanking hole dislocation set.

4. A water storage centrifugal pump according to claim 3, characterized in that a positioning shaft is fixed on the outer side of the support between two adjacent partition plates, two deflection plates are hinged on the positioning shaft, a baffle is fixed on the upper end of the positioning shaft, the upper end of each deflection plate is arranged to be close to the lower end face of the baffle, the upper end face of the baffle and the upper end of the partition plate are on the same horizontal plane, the outer end of each deflection plate is arranged to be close to the inner side face of the support ring, a traction spring is arranged between the two deflection plates, guide grooves are respectively arranged on the two deflection plates near one side, a moving rod is slidably arranged in each guide groove, a top rod is fixed on each moving rod, the top rod is slidably arranged on the support ring, a buffer wheel is fixed on one end of the top rod, which is located outside the support ring, the buffer wheel contacts the inner side wall of the sand discharge hopper, and a top pressure projection is arranged on the inner side wall of the sand discharge hopper, when the buffer wheel contacts and presses the convex block, the gap between the two isolation plates, the sand discharge hole and the blanking hole are staggered, the support sleeve between the two adjacent isolation plates is provided with a one-way valve, the transmission shaft is hollow, the one-way valve is connected with the hollow inside of the transmission shaft, and the upper end of the transmission shaft is higher than the upper end of the vertical guide pipe.

5. A water storage centrifugal pump according to claim 4, wherein the partition plate is provided with sealing strips on the upper and lower end sides.