CN111120395A - Water pump impeller capable of being rapidly disassembled - Google Patents

Water pump impeller capable of being rapidly disassembled Download PDF

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Publication number
CN111120395A
CN111120395A CN202010030508.1A CN202010030508A CN111120395A CN 111120395 A CN111120395 A CN 111120395A CN 202010030508 A CN202010030508 A CN 202010030508A CN 111120395 A CN111120395 A CN 111120395A
Authority
CN
China
Prior art keywords
impeller
hole
screw
guide cone
water pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010030508.1A
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Chinese (zh)
Inventor
王军
师光飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan Technical College of Communications
Original Assignee
Wuhan Technical College of Communications
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan Technical College of Communications filed Critical Wuhan Technical College of Communications
Priority to CN202010030508.1A priority Critical patent/CN111120395A/en
Publication of CN111120395A publication Critical patent/CN111120395A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/20—Mounting rotors on shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/086—Sealings especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2238—Special flow patterns
    • F04D29/225—Channel wheels, e.g. one blade or one flow channel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2266—Rotors specially for centrifugal pumps with special measures for sealing or thrust balance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2272—Rotors specially for centrifugal pumps with special measures for influencing flow or boundary layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention provides a water pump impeller capable of being quickly disassembled, which comprises an upper cover plate, a lower cover plate, impeller blades, a central shaft hole and a guide cone, wherein the central shaft hole is a stepped through hole, the stepped through hole comprises a unthreaded hole and a screw hole, the screw hole is used for disassembling, external threads at the lower end of the guide cone are matched with internal threads of the screw hole, the guide blade is arranged on the outer surface of the guide cone, when the impeller normally rotates, the external threads of the guide cone are screwed into the screw hole, the outer surface of the guide cone is in smooth transition with the outer surface of a hub, the lower end surface of the guide blade is just connected with the upper end surface of the impeller blades, when the impeller needs to be disassembled from a rotating shaft, the guide cone is firstly screwed out of the screw hole of the impeller, then the screw rod. The guide cone can prevent water flow from entering the screw hole, can prolong the length of the impeller blade and improve the hydraulic performance of the impeller.

Description

Water pump impeller capable of being rapidly disassembled
Technical Field
The invention relates to an impeller, in particular to a water pump impeller capable of being quickly disassembled.
Background
In the prior art, the impeller is usually fixed in a manner that the rotating shaft penetrates through the impeller and the end of the impeller is fixed by the impeller nut, and the impeller cannot be quickly disassembled, so that a series of impellers capable of being quickly disassembled are produced. For example, patent documents CN108825550A, CN201386660Y, and CN201190691Y all achieve rapid disassembly of the impeller by such means, but in the impeller of this type, the screw hole portion is exposed during normal water pumping operation, that is, the screw hole is not filled, so that water can flow into the screw hole, on one hand, the water can corrode the thread on the inner surface of the screw hole, and on the other hand, the existence of the screw hole can cause vortex around the screw hole during rotation of the impeller, and the performance of the impeller can be reduced.
Disclosure of Invention
The invention aims to solve the technical problem that in the background technology, the impeller which can be rapidly disassembled is prevented from entering a screw hole to corrode a thread on the inner surface of the screw hole when the impeller works normally, and vortex is generated around the screw hole when the impeller rotates to reduce the performance of the impeller.
In order to solve the technical problems, the technical scheme of the impeller of the invention is as follows: an impeller comprises an upper cover plate, a lower cover plate, impeller blades, a central shaft hole and a flow guide cone, wherein the central shaft hole is a stepped through hole, the stepped through hole comprises a unthreaded hole and a screw hole, the aperture of the unthreaded hole is larger than that of the screw hole, the unthreaded hole is used for being in interference fit with a rotating shaft, the screw hole is used for being disassembled, the lower end of the flow guide cone is provided with external threads, the external threads at the lower end of the flow guide cone are matched with the internal threads of the screw hole, the outer surface of the flow guide cone is provided with the flow guide blades, the number of the impeller blades is consistent with that of the flow guide blades, the upper end surface of an impeller hub is a plane, the flow guide cone is provided with a contact surface which is in contact with the upper end surface of the impeller hub, a circle of groove is arranged between the contact surface and the external, the external screw thread screw in screw of water conservancy diversion awl, the surface of water conservancy diversion awl and the smooth transition of wheel hub's surface, the terminal surface just meets with the up end of impeller blade under the water conservancy diversion blade, when needs dismantle the impeller from the pivot, unscrew the water conservancy diversion awl from the screw of impeller earlier, then twist the screw rod in the screw, realizes dismantling with the pivot is ejecting through the screw rod.
Preferably, the number of the impeller blades is 6.
Preferably, the thread of the screw hole is a triangular thread.
Preferably, the impeller is made of stainless steel.
Preferably, the impeller is made of plastic.
Preferably, the upper cover plate is connected with the impeller blades through welding, and the lower cover plate is connected with the impeller blades through welding.
Preferably, the impeller blades are uniformly distributed between the upper cover plate and the lower cover plate, and the guide vanes are uniformly distributed on the outer surface of the guide cone.
The invention has the beneficial effects that:
1. through setting up the water conservancy diversion awl that has the external screw thread, the external screw thread of water conservancy diversion awl cooperatees with the internal thread of screw, when the impeller normally rotates, in the external screw thread screw in screw of water conservancy diversion awl, the surface of water conservancy diversion awl and wheel hub's surface smooth transition, the terminal surface just meets with the up end of impeller blade under the guide vane, when needs are dismantled the impeller from the pivot, screw out from the screw of impeller with the water conservancy diversion awl earlier, then twist the screw rod into in the screw, it dismantles to realize the pivot is ejecting through the screw rod. The guide cone can seal the screw hole on the impeller, so that when the impeller rotates, no vortex is generated around the screw hole, and the hydraulic performance of the impeller is not reduced; have the contact surface with impeller wheel hub up end contact through the water conservancy diversion awl, be provided with the round recess between contact surface and the external screw thread, be provided with the sealing washer in the recess, can prevent that water can get into the screw to the screw of corrosion screw internal surface.
2. The guide vanes are arranged on the outer surface of the guide cone, the number of the impeller vanes is consistent with that of the guide vanes, the outer surface of the guide cone is in smooth transition with that of the hub, and the lower end face of each guide vane is just in butt joint with the upper end face of each impeller vane, so that the length of each impeller vane can be prolonged, and the hydraulic performance of the impeller is improved.
On one hand, the flow guide cone can seal the screw hole on the impeller, so that when the impeller rotates, no vortex is generated around the screw hole, and the hydraulic performance of the impeller is not reduced; water can not enter the screw hole and can not rust the screw thread on the inner surface of the screw hole; on the other hand, the guide vanes are arranged on the outer surface of the guide cone, so that the length of the impeller vanes can be prolonged, and the hydraulic performance of the impeller is improved. Namely, the guide cone of the invention has multiple functions.
Drawings
Fig. 1 is a schematic view of an impeller structure separated from a guide cone in an embodiment of the present invention;
fig. 2 is a schematic view of an impeller structure and a guide cone screwed together in an embodiment of the present invention;
FIG. 3 is a schematic illustration of the impeller being disassembled in an embodiment of the present invention;
fig. 4 is a top view of an impeller structure and a guide cone screwed together in an embodiment of the present invention;
in the figure: 1. the impeller comprises an upper cover plate, 2, a lower cover plate, 3, impeller blades, 4, a flow guide cone, 5, a unthreaded hole, 6, a screw hole, 7, a rotating shaft, 8, external threads, 9, flow guide blades, 10, a hub, 11, a contact surface, 12, a sealing ring, 13 and a screw rod.
Detailed Description
The solution of the invention with respect to the impeller is explained in connection with fig. 1-4. An impeller comprises an upper cover plate 1, a lower cover plate 2, impeller blades 3, a central shaft hole and a flow guide cone 4, wherein the central shaft hole is a stepped through hole, the stepped through hole comprises an unthreaded hole 5 and a screw hole 6, the aperture of the unthreaded hole 5 is larger than that of the screw hole 6, the unthreaded hole 5 is used for being in interference fit with a rotating shaft 7, the screw hole 6 is used for disassembly, the lower end of the flow guide cone 4 is provided with an external thread 8, the external thread 8 at the lower end of the flow guide cone 4 is matched with the internal thread of the screw hole 6, the outer surface of the flow guide cone 4 is provided with flow guide blades 9, the number of the impeller blades 3 is consistent with that of the flow guide blades 9, the upper end surface of the impeller hub 10 is a plane, the flow guide cone 4 is provided with a contact surface 11 which is in contact with the upper end surface of the impeller hub 10, a circle of groove is arranged between the contact surface 11 and the external thread, when the impeller normally rotates, the external thread 8 of the guide cone 4 is screwed into the screw hole 6, the outer surface of the guide cone 4 is in smooth transition with the outer surface of the hub 10, the lower end face of the guide vane 9 is just in butt joint with the upper end face of the impeller vane 3, when the impeller needs to be disassembled from the rotating shaft 7, the guide cone 4 is firstly screwed out of the screw hole 6 of the impeller, then the screw 13 is screwed into the screw hole 6, and the rotating shaft 7 is ejected out through the screw 6 to realize disassembly.
Preferably, the number of the impeller blades 3 is 6.
Preferably, the thread of the screw hole 6 is a triangular thread.
Preferably, the impeller is made of stainless steel.
Preferably, the impeller is made of plastic.
Preferably, the upper cover plate 1 is connected with the impeller blades 3 through welding, and the lower cover plate 2 is connected with the impeller blades 3 through welding.
Preferably, the impeller blades 3 are uniformly distributed between the upper cover plate 1 and the lower cover plate 2, and the guide vanes 9 are uniformly distributed on the outer surface of the guide cone 4.

Claims (7)

1. The utility model provides a water pump impeller that can dismantle fast, includes upper cover plate, lower apron, impeller blade, central shaft hole and water conservancy diversion awl, the central shaft hole is the ladder through-hole, the ladder through-hole includes unthreaded hole and screw, the aperture of unthreaded hole is greater than the aperture of screw, the unthreaded hole be used for with pivot interference fit, the screw is used for dismantling, and water conservancy diversion awl lower extreme is provided with the external screw thread, and the external screw thread of water conservancy diversion awl lower extreme cooperatees its characterized in that with the internal thread of screw: the outer surface of the guide cone is provided with guide vanes, the number of the impeller vanes is consistent with that of the guide vanes, the upper end face of the impeller hub is a plane, the guide cone is provided with a contact surface which is in contact with the upper end face of the impeller hub, a circle of groove is arranged between the contact surface and the external threads, a sealing ring is arranged in the groove, the upper end faces of the impeller vanes and the upper end face of the impeller hub are all located in the same plane, when the impeller normally rotates, the external threads of the guide cone are screwed into the screw hole, the outer surface of the guide cone is in smooth transition with the outer surface of the hub, the lower end face of the guide vanes is just in contact with the upper end face of the impeller vanes, when the impeller needs to be disassembled from the rotating shaft, the guide cone is firstly screwed out from the screw hole of the impeller.
2. A water pump impeller capable of being quickly disassembled according to claim 1, wherein: the number of the impeller blades is 6.
3. A water pump impeller capable of being quickly disassembled according to claim 1, wherein: the screw thread of screw is triangle-shaped screw thread.
4. A water pump impeller capable of being quickly disassembled according to claim 1, wherein: the impeller is made of stainless steel.
5. A water pump impeller capable of being quickly disassembled according to claim 1, wherein: the impeller is made of plastic.
6. A water pump impeller capable of being quickly disassembled according to claim 4, wherein: the upper cover plate is connected with the impeller blades through welding, and the lower cover plate is connected with the impeller blades through welding.
7. A water pump impeller capable of being quickly disassembled according to claim 1, wherein: the impeller blades are uniformly distributed between the upper cover plate and the lower cover plate, and the guide vanes are uniformly distributed on the outer surface of the guide cone.
CN202010030508.1A 2020-01-13 2020-01-13 Water pump impeller capable of being rapidly disassembled Pending CN111120395A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010030508.1A CN111120395A (en) 2020-01-13 2020-01-13 Water pump impeller capable of being rapidly disassembled

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010030508.1A CN111120395A (en) 2020-01-13 2020-01-13 Water pump impeller capable of being rapidly disassembled

Publications (1)

Publication Number Publication Date
CN111120395A true CN111120395A (en) 2020-05-08

Family

ID=70488063

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010030508.1A Pending CN111120395A (en) 2020-01-13 2020-01-13 Water pump impeller capable of being rapidly disassembled

Country Status (1)

Country Link
CN (1) CN111120395A (en)

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