WO2014190671A1 - 一种水泵叶轮的制造方法及水泵 - Google Patents

一种水泵叶轮的制造方法及水泵 Download PDF

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Publication number
WO2014190671A1
WO2014190671A1 PCT/CN2013/086719 CN2013086719W WO2014190671A1 WO 2014190671 A1 WO2014190671 A1 WO 2014190671A1 CN 2013086719 W CN2013086719 W CN 2013086719W WO 2014190671 A1 WO2014190671 A1 WO 2014190671A1
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WO
WIPO (PCT)
Prior art keywords
impeller
mold
water pump
rear cover
water
Prior art date
Application number
PCT/CN2013/086719
Other languages
English (en)
French (fr)
Inventor
吴为国
Original Assignee
Wu Weiguo
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 Wu Weiguo filed Critical Wu Weiguo
Publication of WO2014190671A1 publication Critical patent/WO2014190671A1/zh

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Classifications

    • 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
    • F04D29/2205—Conventional flow pattern
    • F04D29/2222—Construction and assembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/006—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps double suction 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
    • F04D29/02—Selection of particular materials
    • F04D29/026—Selection of particular materials especially adapted for liquid pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
    • B29L2031/087—Propellers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/20—Manufacture essentially without removing material
    • F05D2230/21—Manufacture essentially without removing material by casting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/20—Oxide or non-oxide ceramics

Definitions

  • the present invention relates to pumps, and more particularly to a water pump that rotates an impeller.
  • the pump is a necessary tool in liquid pumping.
  • the impeller is a key component of the pump.
  • the existing pump impeller is difficult to demould due to structural reasons.
  • Most of the sand casting is sand casting, that is, the sand processing method is used, and the sand type does not exist.
  • Demoulding problem also used in the impeller of metal mold casting, after the front cover and the blade are separated, the combined impeller is formed; if the impeller of the blade is twisted, it is necessary to provide a core pulling mechanism in the metal mold to produce the twisted blade.
  • Pump impeller; Existing impeller machining methods are cumbersome, especially for impellers that turn sand. After gold processing, it is necessary to parallel calibration of the impeller.
  • the object of the present invention is to solve the deficiencies of the prior art, and to provide a method for manufacturing a water pump impeller, which uses a metal mold with a simple structure and no core pulling, and mass-produces the water pump impeller by injection molding or die casting or extrusion.
  • the pump makes the pump production efficient and low cost.
  • a method for manufacturing a water pump impeller metal is fabricated into a mold, and a front cover plate of an impeller formed by injection molding or die casting or extrusion is integrated with each blade and a rear cover plate.
  • the mold is composed of a movable mold and a fixed mold.
  • the mold is provided with a core and a cavity, and the movable mold or the fixed mold is formed by a set of cores from the rear cover to be formed.
  • Another set of cores extending into the formed water inlet is butted to form a water passage of the impeller;
  • the injection molding is a mold injection of plastic in the injection molding machine;
  • the die casting is after the mold is clamped in the die casting machine Pressing the molten metal;
  • the squeezing is to put the blank into the mold to apply pressure to cause the blank to deform and enrich the cavity into a product;
  • the squeezing further comprises pressing the thermosetting plastic powder into the mold and pressing and curing under heating Forming, or placing the powder metallurgy powder into a mold and extruding it, and then setting it by heating and sintering;
  • the mold of the injection molding or die casting or extrusion method has a core on the back cover of the impeller through
  • the notch formed by the above-described manufacturing method is a single suction impeller.
  • the impeller is composed of two pairs of single suction impellers to form a double suction impeller with two sides of water absorption, and the rear cover of two single suction impellers is in the middle of the double suction impeller; the metal is made into a mold, and is injection molded or The front cover plate of the impeller formed by die-casting or extrusion method is integrated with each blade and the rear cover plate.
  • the mold is composed of a movable mold and a fixed mold, and a core and a cavity are arranged in the mold, and the dynamic mold is arranged.
  • the mold is formed by a set of cores extending from the rear cover to be formed into a water passage that is formed by the other set of cores extending from the water inlet to be formed;
  • the injection molding is a mold After the mold is clamped in the injection molding machine, the plastic is injected; the die casting is that the mold is pressed into the molten metal after the mold is clamped in the die casting machine; the pressing is to put the blank into the mold to apply pressure to make the blank deform and enrich the cavity into a product;
  • the extrusion further includes placing the thermosetting plastic powder into the mold while heating In the case of extrusion curing, or after the powder metallurgy powder is placed in a mold, and then heat-sintered and shaped; the back cover of the impeller formed by the mold of the injection molding or die-casting or extrusion method There is a notch formed by the passage of the core, and one of the rear cover plates has a shaft hole or two rear cover plates which are matched with the water pump shaft,
  • the blank formed by the extrusion method is pre-machined into a shape similar to the impeller, and the incision is pre-opened on the blank of the relative position of the movable model core and the fixed model core, and the slit is convenient for the dynamic model core and the fixed model.
  • the core anastomosis is connected to the water passage of the impeller.
  • the notch formed by the core passing through the back cover of the impeller is filled by the insert, and the insert is a one-piece structure or a split structure or a structure with a flange assembly, the inlay
  • the parts can be formed by injection molding or die casting or extrusion, and the inserts are combined on the impeller to fill the notches on the rear cover of the impeller; the impeller after filling the notch on the rear cover is more efficient.
  • An impeller manufactured by the method for manufacturing a water pump impeller wherein the impeller is a single suction impeller, and a notch formed by a core is left on the rear cover of the impeller, and the notch is formed by the insert.
  • the insert is a one-piece structure or a split structure or a structure with a flange assembly.
  • An impeller manufactured by the method for manufacturing a water pump impeller wherein the impeller is a double suction impeller composed of two pairs of impellers, and the rear cover of the two impellers is in the double suction impeller
  • the impeller is a double suction impeller composed of two pairs of impellers, and the rear cover of the two impellers is in the double suction impeller
  • One of the rear cover plates having a shaft hole or two rear cover plates matched with the water pump shaft has a shaft hole matched with the water pump shaft; a gap formed by the passage of the core is left on the rear cover plate of the impeller,
  • the notch is directly used by the insert or without the insert, and the insert is a one-piece structure or a split structure.
  • the water pump with the impeller mainly comprises a power, a water pump shaft and an impeller, wherein the impeller is a single suction impeller or a double suction impeller; the indentation of the single suction impeller or the double suction impeller is arranged, Or do not set the described inserts.
  • the shaft end of the water pump uses a hex nut to press the impeller, and the hex nut has a protective cover outside, the cover is fixed on the impeller, and the hexagonal cavity and the hex nut are matched inside the cover to prevent the hex nut from loosening, and the end of the cover
  • the taper is tapered to reduce water flow resistance, and the cover has built-in grease to prevent hex nuts from rusting.
  • the power is a motor, the water pump and the motor are coaxial, and the water pump is connected with a floating body that floats the water pump on the water surface or submerges into the water.
  • the motor is connected to the pump casing through the upper filter net, and the double suction impeller is in the pump casing, and the water flow It can be separately accessed from the upper filter screen and the lower filter screen.
  • the pump casing is composed of the upper half pump casing and the lower half pump casing; the lower bearing seat of the motor and the conical seal seat constitute a mechanical seal chamber, and the water inlet of the upper filter mesh is from the cone
  • the periphery of the seal seat enters the pump casing; the motor is fixed on the floating body by the support plate, the floating body is a hollow plastic piece, and the floating body has a through hole passing through the motor, and the support plate of the motor passes through the groove of the floating body.
  • the flange After rotating at a certain angle, it is mounted on the flange, and the flange has a hole for connecting the support plate; the outer end cover of the motor is connected with a power cord on the top, or a junction box with a power cord exposed to the water during operation;
  • the junction box cover on the junction box cover constitutes a mushroom-shaped sealing body, and the junction box
  • the internal fixed terminal block, the lead wire in the motor is sealed and then enters the junction box to connect the terminal block, and the power cable enters the junction box from the lower part of the junction box.
  • the impeller manufactured by injection molding or die casting or extrusion is used with a metal mold having a simple structure and no core pulling, the product consistency is good, the gold processing margin is small, the production efficiency is high, and the cost is low. Suitable for mass production; this impeller can be used to pump pumps of different liquids and different purposes.
  • FIG. 1 is a perspective view of a movable mold of an impeller mold of the present invention
  • Figure 2 is a perspective view showing the fixed mold of the impeller mold of the present invention.
  • Figure 3 is a perspective view of the movable mold of the pair of impeller molds of the present invention.
  • Figure 4 is a perspective view showing the fixed mold of the pair of impeller molds of the present invention.
  • Figure 5 is a schematic view showing the dynamic mold and product structure of the impeller mold of the present invention.
  • Figure 6 is a schematic view of the impeller having a notch of the rear cover of the present invention.
  • Figure 7 is a schematic view of the impeller having a notched cover of the present invention. (see the other direction of Figure 6)
  • Figure 8 is a schematic view of the insert and flange assembly of the present invention.
  • Figure 9 is a schematic view showing the assembly of the impeller and the flange assembly of the present invention.
  • Figure 10 is a schematic view of the impeller having a notch of the rear cover of the present invention; (with shaft hole)
  • Figure 11 is a second schematic view of the flange assembly of the present invention.
  • Figure 12 is a schematic view of the flange assembly of the present invention. (see the other direction of Figure 11)
  • Figure 13 is a schematic view showing the assembly of the impeller and the flange assembly of the present invention. (Fig. 10, Fig. 12 assembly)
  • Figure 14 is a schematic view of the impeller having a notch of the rear cover of the present invention; (with a spline shaft hole)
  • Figure 15 is a schematic view of the integrated insert of the present invention.
  • Figure 16 is a schematic view showing the assembly of the impeller and the insert of the present invention.
  • Figure 17 is a schematic view of the impeller of the rear cover of the present invention.
  • Figure 18 is a second schematic view of the impeller of the rear cover of the present invention.
  • Figure 19 is a schematic view of the insert of the double suction impeller of the present invention. (front)
  • Figure 20 is a schematic view of the double suction impeller insert of the present invention. (reverse)
  • Figure 21 is a schematic view of the double suction impeller insert of the present invention. (front)
  • Figure 22 is a schematic view of the insert of the double suction impeller of the present invention. (reverse)
  • Figure 23 is a schematic view showing the structure of the assembled double suction impeller of the present invention (double-clicking the impeller is shown by Figures 17, 18, 19 and 21) Structure assembled);
  • Figure 24 is a cross-sectional view showing the double suction impeller pump of the present invention.
  • Figure 25 is an enlarged view of Figure 24C
  • Figure 26 is a perspective view of the double suction impeller pump of the present invention.
  • Figure 27 is a perspective view of the floating body of the present invention.
  • Figure 28 is a perspective view of the cover of the present invention.
  • a method for manufacturing a water pump impeller comprises: forming a mold from a metal material by injection molding or die casting or extrusion, the mold is mainly composed of a cavity and a core, and the core on the side of the movable mold is a dynamic model core 1 The other side is the fixed core 3, and one of the cores of the movable mold core 1 or the fixed mold core 3 is extended from the rear cover 6 into the other set of cores extending from the water inlet 19 to produce the impeller water.
  • the channel 11 has an anastomosis surface of a pair of cores extending from the rear cover 6 and a side B extending from the water inlet 19 into the other group of cores; the movable mold core extending from the water inlet 19 1 mainly forming the back surface of the blade, and the fixed mold core 3 extended by the rear cover 6 mainly shapes the blade working surface 8, and the front cover 7 of the impeller and the respective blades 5 and the rear cover 6 are injection-molded or die-cast or extruded.
  • the pressing method is formed to leave a notch 10 formed on the rear cover 6 due to the passage of the core.
  • the injection molding is that the mold is injected into the cavity after the mold is closed in the injection molding machine;
  • the die casting is that the mold is pressed into the cavity after the die is closed in the die casting machine;
  • the extrusion refers to the placement of the gold material into the cavity; Applying pressure in the mold to deform the billet to fill the cavity into a product;
  • the extruding further comprises pressing the thermosetting plastic powder into the mold to form a solidification under heating, or placing the powder metallurgy powder into the mold After the press forming, the sintering is shaped again; the mold structure of the injection molding or die casting or extrusion method is different, but the notch 10 formed by the passage of the core is left on the rear cover of the impeller.
  • the pump efficiency is somewhat affected, but compared with the impeller made by the sand turning method, since the shape error is reduced, the surface finish is improved, and the efficiency may be improved, not only is omitted.
  • the working time of the cutting process also increases the parallelism of the impeller, and the impeller with the notch of the rear cover 6 can also be used directly on the water pump.
  • the method for manufacturing the water pump impeller further includes that the notch 10 formed by the passage of the core on the rear cover 6 of the impeller is filled by the insert 14.
  • Each of the inserts 14 is interconnected to form an integral insert 15, or the insert 14 is integrally formed with the flange as a flange assembly 13, and the integral insert 15 and flange assembly 13 can be the same as the impeller.
  • the material is injection molded or die-cast or extruded.
  • the insert 14 is combined on the impeller to fill the notch 10 on the rear cover of the impeller. There are many combinations, which can be fixed by fasteners or bonded or welded.
  • the method can also fill the gap of the back cover after the resin mixture in the gap is solidified. In short, as long as the gap on the back cover is filled, the insert fills the notched impeller on the back cover. More efficient.
  • the impeller single suction impeller may be composed of a pair of two single suction impellers to form a double suction impeller, and the rear cover plates 6 of the two single suction impellers are in the middle of the double suction impeller, and both of the rear cover plates are left.
  • the notch 10 is formed by the insert 16 formed by the passing of the working face core, and the notch 10 is filled by the insert 16 which is connected to the double suction impeller, and the joint surface of the double suction impeller 16 and the rear cover 6 can be hollowed out, and the hollow portion is hollowed out.
  • Figures 17 and 18 show that the two pairs of impellers can form a double suction impeller, and the pair of impellers can be formed in a mold, one of which is a back cover.
  • a shaft hole 12 is provided on the plate 6 or the two rear covers to match the water pump shaft 26.
  • the shaft hole 12 includes a circular hole, a square hole, a keyed hole, a splined hole, and the like.
  • the insert 16 of the double suction impeller is assembled by two pieces, and Fig. 19 to Fig. 22 are front and back views of the insert of the two double suction impellers, and the hollow portion 20 is formed on the reverse side.
  • a method for manufacturing a water pump impeller according to the present invention further comprises: one of the two paired impellers with a notch and the flange assembly 13 described above can constitute a complete single suction impeller having a smaller flow rate than the double suction impeller , or a different flow of the rear cover with a notched impeller matched with the flange assembly 13 to form a complete series of single suction impellers.
  • the water pump with the impeller manufactured by the method for manufacturing the water pump impeller of the present invention mainly comprises a power, a water pump shaft 26, an impeller, etc., the impeller is composed of a front cover 7, a rear cover 6 and a blade 5, and the blade 5 is Between the front cover plate 7 and the rear cover plate 6, the front cover plate 7, the rear cover plate 6 and the blade 5 are integrally molded or die-cast or extruded by a die, and the mold is mainly composed of a cavity and a core.
  • the core is divided into a dynamic model core 1 and a fixed model core 3, and one of the cores of the movable mold core 1 or the fixed mold core 3 extends from the rear cover 6 into and from the water inlet 19
  • the assembled core anastomosis produces a water passage 11 of the impeller, and the core extending from the water inlet 19 mainly shapes the back surface of the blade, and the core extended by the rear cover 6 mainly shapes the blade working surface 8 and the impeller
  • the front cover 7 and each of the blades 5 and the rear cover 6 are formed by injection molding or die casting or extrusion, and a gap 10 formed by the passage of the core is left on the rear cover 6, and the notch 10 works on the impeller.
  • Efficiency is a little influential, but compared to the impeller made by the sand turning method, because the shape error is reduced, the surface is smooth The degree is improved, the efficiency may be improved, not only the working time of the cutting process is omitted, but also the parallelism of the impeller is improved, and the impeller with the notch of the rear cover 6 can also be straight. Connected to the pump.
  • the movable mold or the fixed mold can be exchanged according to the difference in the direction of the mold release.
  • the impeller machining can achieve less cutting or no cutting.
  • the number and shape of the impeller blades can be determined according to the nature of the pumped liquid and the characteristics of the pump.
  • the notch 10 formed on the rear cover 6 of the impeller leaving the core through is filled by the insert 14, and the inserts 14 are connected to each other to form an integral insert 15 or inlaid.
  • the member 14 and the flange are integrally formed as a flange assembly 13, and the flange assembly 13 has a shaft hole 12 matched with the water pump shaft 26.
  • the flange assembly 13 can be combined with different impellers to form a series of impellers, the integrated inlay
  • the piece 15 or the flange assembly 13 can be injection molded or die cast or extruded from the same material as the impeller, the insert 14 being combined on the impeller to fill the indentation 10 in the rear cover 6 of the impeller;
  • the piece 14 is combined on the impeller to fill the notch 10 on the rear cover of the impeller.
  • the gap on the cover plate after the full cover in short, just fill the gap on the rear cover.
  • the water pump may be water-absorbent on both sides, the impeller is a two-side water-absorbing impeller composed of two pairs of impellers to form a double-suction impeller, two impeller rear cover plates 6 in the middle of the double suction impeller, two rear The cover plate 6 leaves a notch 10 formed by the passage of the working face core, wherein one of the rear cover plates 6 having the shaft hole 12 or the two rear cover plates 6 mated with the water pump shaft 26 has an axis matching the water pump shaft 26.
  • the shaft hole 12 includes a circular hole, a square hole, a keyed hole, and the like.
  • the notch 10 formed on the rear cover 6 of the impeller leaving the core through is filled by the inserts 15 which are integrally connected to each other.
  • One of the rear cover plates 6 has a shaft hole 12 matched with the water pump shaft 26, or both of the rear cover plates have a shaft hole 12 matched with the water pump shaft 26, the shaft hole including a circular hole, a square hole, and a key groove. Holes, etc.
  • one of the two pairs of impellers and the flange assembly 13 described above may constitute a complete single suction impeller having a lower flow rate than the double suction impeller; or a different flow of the rear cover 6 with a notched impeller and
  • the flange assembly 13 is matched to form a complete series of single suction impeller pumps.
  • the flange assembly 13 has a shaft hole 12 matched with the water pump shaft 26, and the shaft hole 12 includes a circular hole, a square hole, a keyed hole, and the like.
  • the positioning pin and the positioning hole may be replaced by a screw and a screw hole.
  • the hollow portion 18 and the hollow portion 20 are provided for uniform thickness of the workpiece.
  • the power is the motor 24, the water pump and the motor 24 are coaxial, the hex nut 44 is pressed against the impeller at the shaft end, and the hex nut 44 has a protective cover 40 outside, the cover 40 is fixed on the impeller, and the cover 40 has a hexagon inside.
  • the hole 41 and the hex nut 44 are matched to prevent the hex nut from loosening, the end of the cover 40 is tapered to reduce the water flow resistance, and the cover has a built-in grease to prevent the hex nut 44 from rusting.
  • the water pump is entirely floated on the surface of the water by the floating body 23 or submerged into the water, and the motor 24 is connected to the pump casing through the upper filter 27, The suction impeller is in the pump casing, and the water flow enters from the upper filter net 27 and the lower filter net 32 respectively.
  • the pump casing is composed of the upper half pump casing 30 and the lower half pump casing 31; the lower bearing seat 25 of the motor 24 and the tapered seal seat 29 constitutes a mechanical seal chamber 28, the inlet water of the upper screen 27 enters the pump casing from the periphery of the conical seal seat 29; the motor is fixed to the floating body 23 by the support plate 39, floating on the water surface, and the floating body 23 is hollow In the plastic part, the floating body 23 has a through hole passing through the motor.
  • the support plate 39 of the motor passes through the groove 36 in the through hole of the floating body, is rotated at a certain angle, and is mounted on the flange 37.
  • the flange 37 has a connection support.
  • a hole 38 of the plate a power cable or a junction box 33 with a power cord and a junction box cover 34 is attached to the outer end cover of the motor; the junction box 33 is a mushroom-shaped sealing body, and the junction box 33 is The terminal block 35 is fixed, and the lead wire in the motor is sealed to the terminal block 33 to be connected to the terminal block 35.
  • the power cable enters the terminal box 33 from the lower portion of the junction box 33, and the junction box is exposed on the water surface during operation.

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

Abstract

一种水泵叶轮制造方法及水泵，该水泵叶轮制造方法采用金属制作成为模具，用注塑或压铸或挤压方法成形的叶轮的前盖板（7）与各叶片（5）及后盖板（6）连成一体，所述模具由动模和定模组成，模具内设置有型芯（1，3）及型腔（2，4），所述的动模或定模由其中的一组型芯（1，3）由欲成型的后盖板（6）处伸入与从欲成型的进水口（19）处伸入的另一组型芯（1，3）吻合对接生成叶轮的过水通道（11），由注塑或压铸或挤压方法的模具所成型出的后盖板（6）上都留有因型芯（1，3）通过而形成的缺口（10），最后形成水泵叶轮。该叶轮产品一致性好，金加工余量少，生产效率高，成本低，适合批量生产；这种叶轮可用于多种不同用途的泵。

Description

一种水泵叶轮的制造方法及水泵 技术领域
[0001] 本发明涉及泵， 特别是涉及一种旋转叶轮的水泵。
背景技术
[0002] 泵是液体抽送中必须的机具， 叶轮是水泵关键部件， 现有的水泵叶轮因结构原因， 脱模困难， 大部分采用沙型铸造， 即用翻沙的加工方法， 沙型不存在脱模问题； 也有用金属 模铸造的叶轮， 把前盖板和叶片分开制作说后， 组合成叶轮； 如果是叶片扭曲的叶轮还需要在 金属模中设置抽芯机构， 才能生产出扭曲叶片的水泵叶轮； 已有的叶轮加工方法都比较麻 烦， 特别是翻沙的叶轮， 金加工后还需要对叶轮进书行平行校准。
发明内容
[0003] 本发明的目的是解决已有技术的不足， 提供一种水泵叶轮的制造方法， 用一种结构 简单不用抽芯的金属模具， 用注塑或压铸或挤压的方法批量生产水泵叶轮及水泵， 使水泵生 产效率高成本低。
[0004] 本发明的目的是这样实现的： 一种水泵叶轮的制造方法： 金属制作成为模具， 用注 塑或压铸或挤压方法成形的叶轮的前盖板与各叶片及后盖板连成一体， 所述的模具由动模和 定模组成， 模具内设置有型芯及型腔， 所述的动模或定模由其中一组型芯由欲成型的后盖板 处伸入与从欲成型的进水口处伸入的另一组型芯吻合对接生成叶轮的过水通道； 所述的注塑 是模具在注塑机中合模后注入塑料； 所述压铸是模具在压铸机中合模后压入金属液； 所述挤 压是将坯料放入模具内施加压力使坯料产生变形充实型腔成为产品； 所述挤压还包括将热固 性的塑料粉末放入模具内在加热的情况下挤压固化成形， 或将粉末冶金的粉料放入模具内挤 压成形后， 经加热烧结定形； 所述的注塑或压铸或挤压方法的模具所成型出的叶轮的后盖板 上留有因为型芯通过而形成的缺口， 用所述的制造方法制造出的叶轮为单吸叶轮。
[0005] 所述的叶轮为由成对的两个单吸叶轮组成一个两面吸水的双吸叶轮， 两个单吸叶轮 的后盖板在双吸叶轮的中部； 金属制作成为模具， 用注塑或压铸或挤压方法成形的叶轮的前 盖板与各叶片及后盖板连成一体， 所述的模具由动模和定模组成， 模具内设置有型芯及型 腔， 所述的动模或定模由其中一组型芯由欲成型的后盖板处伸入与从欲成型的进水口处伸入 的另一组型芯吻合对接生成叶轮的过水通道； 所述的注塑是模具在注塑机中合模后注入塑 料； 所述压铸是模具在压铸机中合模后压入金属液； 所述挤压是将坯料放入模具内施加压力 使坯料产生变形充实型腔成为产品； 所述挤压还包括将热固性的塑料粉末放入模具内在加热 的情况下挤压固化成形， 或将粉末冶金的粉料放入模具内挤压成形后， 再加热烧结定形； 所 述的注塑或压铸或挤压方法的模具所成型出的叶轮的后盖板上留有因为型芯通过而形成的缺 口， 其中一个后盖板有和水泵轴相配的轴孔或两个后盖板都有和水泵轴相配的轴孔。
[0006] 所述的挤压方法成形的坯料预先加工成与叶轮近似的形状， 在动模型芯和定模型芯 吻合对接的相对位置的坯料上预开切口， 切口便于在动模型芯和定模型芯吻合对接生成叶轮 的过水通道。
[0007] 所述的叶轮的后盖板上留有型芯通过而形成的缺口由镶嵌件填补， 所述的镶嵌件为 一体式结构或分体式结构或带法兰组件的结构， 所述镶嵌件都可由注塑或压铸或挤压方法成 形， 所述的镶嵌件组合在叶轮上使叶轮的后盖板上的缺口填补； 填补后盖板上的缺口后的叶 轮效率更高。
[0008] 用所述的一种水泵叶轮的制造方法制造的叶轮， 所述的叶轮为单吸叶轮， 叶轮的后 盖板上留有型芯通过而形成的缺口， 所述的缺口由镶嵌件填补或不用镶嵌件填补直接使用， 所述的镶嵌件为一体式结构或分体式结构或带法兰组件的结构。
[0009] 用所述的一种水泵叶轮的制造方法制造的叶轮， 所述的叶轮为由成对的两个叶轮组 成一个两面吸水的双吸叶轮， 两个叶轮的后盖板在双吸叶轮的中部； 其中一个后盖板有和水 泵轴相配的轴孔或两个后盖板都有和水泵轴相配的轴孔； 叶轮的后盖板上留有型芯通过而形 成的缺口， 所述的缺口由镶嵌件填补或不用镶嵌件填补直接使用， 所述的镶嵌件为一体式结 构或分体式结构。
[0010] 带有所述的叶轮的水泵， 主要包括动力、 水泵轴、 叶轮， 所述的叶轮是单吸叶轮或 双吸叶轮； 单吸叶轮或双吸叶轮的缺口设置所述的镶嵌件， 或不设置所述的镶嵌件。
[0011] 所述的水泵的轴端用六角螺母压紧叶轮， 六角螺母外部有一个防护罩子， 罩子固定在 叶轮上， 罩子内部有六角凹穴和六角螺母相配， 防止六角螺母松动， 罩子的端部成锥形减少 水流阻力， 罩子内置有油脂防止六角螺母生锈。
[0012] 所述的动力为电机， 水泵和电机同轴， 水泵上连接有使水泵整体浮在水面或潜入水 中的浮体， 电机通过上滤网连接泵壳， 双吸叶轮在泵壳内， 水流可分别从上滤网与下滤网进 入， 泵壳由上半泵壳和下半泵壳组成； 电机的下轴承座和锥形密封件座组成机械密封室， 上 滤网的进水从锥形密封件座周边进入泵壳； 所述电机靠支承板固定在浮体上， 所述浮体是中 空的塑料件， 浮体当中有穿过电机的通孔， 电机的支承板通过浮体凸椽的槽， 旋转一定角度 后， 安装在凸缘上， 凸缘上有连接支承板的孔； 电机的外端盖顶上接有电源线， 或带有电源 线的工作时露在水面上的接线盒， 所述的接线盒盖上接线盒盖组成蘑菇形的密封体， 接线盒 内固定接线端子， 电机内的引出线通过密封后进入接线盒连接接线端子， 电源线从接线盒的 下部进入接线盒。
[0013] 本发明相比现有技术突出的实质性特点和显著进步是：
用本发明的叶轮制造方法， 用一种结构简单不用抽芯的金属模具， 用注塑或压铸或挤压的方 法制造的叶轮， 产品一致性好， 金加工余量少， 生产效率高， 成本低， 适合批量生产； 这种 叶轮可用于抽送不同液体， 不同用途的泵。
附图说明
[0014] 图 1是本发明的叶轮模具的动模立体示意图；
图 2是本发明的叶轮模具的定模立体示意图；
图 3是本发明的成对叶轮模具的动模立体示意图；
图 4是本发明的成对叶轮模具的定模立体示意图；
图 5是本发明的叶轮模具的动模及产品结构示意图；
图 6是本发明的后盖板有缺口的叶轮示意图；
图 7是本发明的后盖板有缺口的叶轮示意图； （图 6的另一方向看）
图 8是本发明的镶嵌件与法兰组件的示意图之一；
图 9是本发明图叶轮和法兰组件装配示意图；
图 10是本发明的后盖板有缺口的叶轮示意图； （有轴孔）
图 11是本发明的法兰组件的示意图之二；
图 12是本发明的法兰组件的示意图； （图 11的另一方向看）
图 13是本发明图叶轮和法兰组件装配示意图； （图 10图 12装配）
图 14是本发明的后盖板有缺口的叶轮示意图； （有花键轴孔）
图 15是本发明的一体的镶嵌件示意图；
图 16是本发明叶轮和镶嵌件装配示意图；
图 17是本发明的后盖板带缺口的叶轮示意图之一；
图 18是本发明的后盖板带缺口的叶轮示意图之二；
图 19是本发明的双吸叶轮的镶嵌件示意图； （正面）
图 20是本发明的双吸叶轮镶嵌件示意图； （反面）
图 21是本发明的双吸叶轮镶嵌件示意图； （正面）
图 22是本发明的双吸叶轮的镶嵌件示意图； （反面）
图 23是本发明的组装的双吸叶轮结构示意图 （双击叶轮由图 17、 图 18、 图 19及图 21所示 的结构组装而成）；
图 24是本发明的双吸叶轮水泵剖视示意图；
图 25是图 24C的放大图；
图 26是本发明的双吸叶轮水泵立体示意图；
图 27是本发明的浮体立体示意图；
图 28是本发明的罩子立体示意图。
[0015] 图中： 1-动模型芯； 2-动模型腔； 3-定模型芯； 4-定模型腔； 5-叶片； 6-后盖板； 7-前 盖板； 8-工作面； 9-定位孔； 10-缺口； 11-过水通道； 12-轴孔； 13-法兰组件； 14-镶嵌件； 15-—体的镶嵌件； 16-双吸叶轮的镶嵌件； 17-定位销； 18-镂空部； 19-进水口； 20-镂空部； 21-定位销； 22-定位孔; 23-浮体; 24-电机; 25-下轴承座; 26-水泵轴; 27-上滤网; 28-机械 密封室； 29-锥形密封件座； 30-上半泵壳； 31-下半泵壳； 32-下滤网； 33-接线盒； 34-接线盒 盖； 35-接线端子； 36-槽； 37-凸缘； 38-连接支承板的孔； 39-支承板； 40-罩子； 41-六角凹 穴； 42-定位孔； 43-定位销； 44-六角螺母。
具体实施方式
[0016] 下面结合附图以具体实施例对本发明作进一步描述， 参见图 1-28:
一种水泵叶轮的制造方法包括： 用金属材料制作成模具由注塑或压铸或挤压方法成形， 所述 的模具主要由型腔和型芯组成， 在动模一边的型芯为动模型芯 1另一边为定模型芯 3， 动模 型芯 1或定模型芯 3的其中一组型芯由后盖板 6伸入与从进水口 19伸入的另一组型芯吻合 对接产生叶轮的过水通道 11， 其吻合面为从后盖板 6伸入的一组型芯的 A面与从进水口 19 伸入另一组型芯的 B面； 所述从进水口 19伸入的动模型芯 1主要使叶片背面成形， 由后盖 板 6伸入的定模型芯 3主要使叶片工作面 8成形， 叶轮的前盖板 7与各叶片 5及后盖板 6— 体由注塑或压铸或挤压方法成形， 在后盖板 6 上留下因为型芯通过而形成的缺口 10。 所述 的注塑是模具在注塑机中闭合后向型腔内注入塑料； 所述压铸是模具在压铸机中闭合后向型 腔内压入金属液； 所述挤压是指金料坯料放入模具内施加压力使坯料产生变形充实型腔成为 产品； 所述挤压还包括将热固性的塑料粉末放入模具内在加热的情况下挤压固化成形， 或将 粉末冶金的粉料放入模具内挤压成形后， 再加热烧结定形； 所述的注塑或压铸或挤压方法的 模具结构有所不同， 但是在叶轮的后盖板上都留有因为型芯通过而形成的缺口 10。
[0017] 所述有缺口 10 的叶轮， 在水泵上工作时， 水泵效率有点影响， 但是与翻沙方法制作 的叶轮比， 因为形状误差减小， 表面光洁度提高， 效率还可能提高， 不但省去了切削加工的 工时， 还提高叶轮的平行度， 后盖板 6带有缺口的叶轮也可以直接在水泵上使用。 [0018] 所述一种水泵叶轮的制造方法还包括， 叶轮的后盖板 6 上留下型芯通过而形成的缺 口 10由镶嵌件 14填补。 各镶嵌件 14之间有相互连接， 成为一体的镶嵌件 15， 或镶嵌件 14 与法兰设置为一体成为法兰组件 13， 所述一体的镶嵌件 15和法兰组件 13都可用与叶轮相 同的材料由注塑或压铸或挤压成形， 所述的镶嵌件 14 组合在叶轮上使叶轮的后盖板上的缺 口 10 填满， 组合方法很多， 可用紧固件固定， 或用粘接、 焊接等方法， 还可以在缺口处灌 注树脂类混合物固化后填满后盖板上的缺口， 总之只要把后盖板上的缺口填满即可， 嵌件填 满后盖板上的缺口后的叶轮所效率更高。
[0019] 上述叶轮单吸叶轮， 可以由成对的两个单吸叶轮组成一个双吸的叶轮， 两个单吸叶 轮的后盖板 6 在双吸叶轮的中部， 两个后盖板上都留下因为工作面型芯通过而形成的缺口 10， 缺口 10由相互连接成为双吸叶轮的镶嵌件 16填补， 所述的双吸叶轮的镶嵌件 16与后 盖板 6结合面可镂空， 镂空部 18使工件厚薄均匀还节省材料； 图 17、 图 18是所述的成对 的两个叶轮可组成一个双吸的叶轮， 成对的两个叶轮可在一付模具中成形， 其中一个后盖板 6或两个后盖板上设置有和水泵轴 26相配的轴孔 12。 所述的轴孔 12包括圆孔、 方孔、 有键 槽的孔、 花键的孔等。 所述的双吸叶轮的镶嵌件 16 由两片组合， 图 19一图 22是两片双吸 叶轮的镶嵌件的正反面视图， 反面有镂空部 20。 两片镶嵌件的反面相互配对， 定位销 21与 定位孔 22配合成为双吸叶轮的镶嵌件， 镶嵌在成对的两个叶轮中间成为完整的双吸叶轮见 图 23、 图 24。
[0020] 本发明的一种水泵叶轮的制造方法还包括： 两个带有缺口的成对叶轮中的一个叶轮 和上述的法兰组件 13 可组成完整的比双吸叶轮流量少的单吸叶轮， 或不同流量的后盖板带 有缺口的叶轮与所述的法兰组件 13相配， 组成完整的单吸叶轮的系列产品。
[0021] 带有本发明一种水泵叶轮的制造方法所制造叶轮的水泵， 主要包括动力、 水泵轴 26、 叶轮等， 叶轮由前盖板 7、 后盖板 6及叶片 5组成， 叶片 5在前盖板 7与后盖板 6之 间， 所述前盖板 7、 后盖板 6及叶片 5—体用模具注塑或压铸或挤压成形， 所述的模具主要 由型腔和型芯组成， 所述的型芯分为动模型芯 1和定模型芯 3， 动模型芯 1或定模型芯 3的 其中一组型芯由后盖板 6伸入与从进水口 19伸入的另一组型芯吻合对接产生叶轮的过水通 道 11， 所述从进水口 19伸入的型芯主要使叶片背面成形， 由后盖板 6伸入的型芯主要使叶 片工作面 8成形， 叶轮的前盖板 7与各叶片 5及后盖板 6—体由注塑或压铸或挤压方法成 形， 在后盖板 6上留下因为型芯通过时形成的缺口 10， 这个缺口 10对叶轮的工作效率有点 影响， 但是与翻沙方法制作的叶轮比， 因为形状误差减小， 表面光洁度提高， 效率还可能提 高， 不但省去了切削加工的工时， 还提高叶轮的平行度， 后盖板 6带有缺口的叶轮也可以直 接在水泵上使用。
[0022] 所述的动模或定模可根据脱模方向的不同相互交换。
[0023] 所述的叶轮加工能实现少切削加工或无切削加工。
[0024] 所述的叶轮叶片个数和形状大小可根据抽送的液体性质及水泵特性确定。
[0025] 为了进一步提高效率， 所述叶轮的后盖板 6上留下型芯通过而形成的缺口 10由镶嵌 件 14填补， 各镶嵌件 14之间相互连接成为一体的镶嵌件 15， 或镶嵌件 14与法兰设置为一 体成为法兰组件 13， 法兰组件 13有和水泵轴 26相配的轴孔 12， 法兰组件 13可与不同的叶 轮组合成装配式系列叶轮， 所述一体的镶嵌件 15或法兰组件 13都可用与叶轮相同的材料注 塑或压铸或挤压成形， 所述的镶嵌件 14组合在叶轮上使叶轮的后盖板 6上的缺口 10填满； 所述的镶嵌件 14组合在叶轮上使叶轮的后盖板上的缺口 10填满， 组合方法很多， 可用紧固 件固定， 或用粘接、 焊接等方法， 还可以在缺口处灌注树脂类混合物固化后填满后盖板上的 缺口， 总之只要把后盖板上的缺口填满即可。
[0026] 所述水泵可以是两面吸水的， 叶轮为两面吸水的叶轮由成对的两个叶轮组成一个双 吸的叶轮， 两个叶轮的后盖板 6在双吸叶轮的中部， 两个后盖板 6上都留下因为工作面型芯 通过而形成的缺口 10， 其中一个后盖板 6有和水泵轴 26相配的轴孔 12或两个后盖板 6都 有和水泵轴 26相配的轴孔 12。 所述的轴孔 12包括圆孔、 方孔、 有键槽的孔等。
[0027] 所述叶轮的后盖板 6上留下型芯通过时形成的缺口 10由相互连接成为一体的镶嵌件 15填补。 其中一个后盖板 6有和水泵轴 26相配的轴孔 12， 或两个后盖板都有和水泵轴 26 相配的轴孔 12， 所述的轴孔包括圆孔、 方孔、 有键槽的孔等。
[0028] 两个成对叶轮中的一个叶轮和上述的法兰组件 13 可组成完整的比双吸叶轮流量少的 单吸叶轮； 或不同流量的后盖板 6带有缺口的叶轮与所述的法兰组件 13相配， 可组成完整 的单吸叶轮的系列水泵。 所述的法兰组件 13有和水泵轴 26相配的轴孔 12， 所述的轴孔 12 包括圆孔、 方孔、 有键槽的孔等。
[0029] 所述的定位销、 定位孔可由螺钉和螺孔取代。
[0030] 镂空部 18、 镂空部 20是为了工件厚薄均匀而设置的。
[0031] 所述动力为电机 24， 水泵和电机 24同轴， 轴端有六角螺母 44压紧叶轮， 六角螺母 44外部有一个防护罩子 40， 罩子 40固定在叶轮上， 罩子 40内部有六角凹穴 41和六角螺母 44相配， 防止六角螺母松动， 罩子 40的端部成锥形减少水流阻力， 罩子内置有油脂防止六 角螺母 44生锈。
[0032] 所述水泵整体靠浮体 23浮在水面或潜入水中， 电机 24通过上滤网 27连接泵壳， 双 吸叶轮在泵壳内， 水流分别从上滤网 27与下滤网 32进入， 泵壳由上半泵壳 30和下半泵壳 31组成； 电机 24的下轴承座 25和锥形密封件座 29组成机械密封室 28， 上滤网 27的进水 从锥形密封件座 29周边进入泵壳； 所述电机靠支承板 39固定在浮体 23上， 浮在水面， 所 述浮体 23是中空的塑料件， 浮体 23当中有穿过电机的通孔， 电机的支承板 39通过浮体的 通孔内凸椽的槽 36， 旋转一定角度后， 安装在凸缘 37 上， 凸缘 37 上有连接支承板的孔 38； 电机的外端盖顶上接有电源线， 或带有电源线及接线盒盖 34的接线盒 33; 所述的接线 盒 33 为磨菇形的密封体， 接线盒 33 内固定接线端子 35， 电机内的引出线通过密封后进入 接线盒 33连接接线端子 35， 电源线从接线盒 33的下部进入接线盒 33， 工作时接线盒露在 水面上。
[0033] 上述实施例仅为本发明的较佳实施例， 并非依此限制本发明的保护范围， 故： 凡依 本发明的结构、 形状、 原理所做的等效变化， 均应涵盖于本发明的保护范围之内。

Claims

权 利 要 求 书
1. 一种水泵叶轮的制造方法： 其特征在于， 金属制作成为模具， 用注塑或压铸或挤压方法 成形的叶轮的前盖板与各叶片及后盖板连成一体， 所述的模具由动模和定模组成， 模具内设 置有型芯及型腔， 所述的动模或定模由其中一组型芯由欲成型的后盖板处伸入与从欲成型的 进水口处伸入的另一组型芯吻合对接生成叶轮的过水通道； 所述的注塑是模具在注塑机中合 模后注入塑料； 所述压铸是模具在压铸机中合模后压入金属液； 所述挤压是将坯料放入模具 内施加压力使坯料产生变形充实型腔成为产品； 所述挤压还包括将热固性的塑料粉末放入模 具内在加热的情况下挤压固化成形， 或将粉末冶金的粉料放入模具内挤压成形后， 经加热烧 结定形； 所述的注塑或压铸或挤压方法的模具所成型出的叶轮的后盖板上都留有因为型芯通 过而形成的缺口， 用所述的制造方法制造出的叶轮为单吸叶轮。
2. 一种水泵叶轮的制造方法： 其特征在于， 所述的叶轮为由成对的两个单吸叶轮组成一个 两面吸水的双吸叶轮， 两个单吸叶轮的后盖板在双吸叶轮的中部； 金属制作成为模具， 用注 塑或压铸或挤压方法成形的叶轮的前盖板与各叶片及后盖板连成一体， 所述的模具由动模和 定模组成， 模具内设置有型芯及型腔， 所述的动模或定模由其中一组型芯由欲成型的后盖板 处伸入与从欲成型的进水口处伸入的另一组型芯吻合对接生成叶轮的过水通道； 所述的注塑 是模具在注塑机中合模后注入塑料； 所述压铸是模具在压铸机中合模后压入金属液； 所述挤 压是将坯料放入模具内施加压力使坯料产生变形充实型腔成为产品； 所述挤压还包括将热固 性的塑料粉末放入模具内在加热的情况下挤压固化成形， 或将粉末冶金的粉料放入模具内挤 压成形后， 再加热烧结定形； 所述的注塑或压铸或挤压方法的模具所成型出的叶轮的后盖板 上都留有因为型芯通过而形成的缺口， 其中一个后盖板有和水泵轴相配的轴孔或两个后盖板 都有和水泵轴相配的轴孔。
3. 如权利要求 1 或 2所述的一种水泵叶轮的制造方法： 其特征在于， 所述的挤压方法成形 的坯料预先加工成与叶轮近似的形状， 在动模型芯和定模型芯吻合对接的相对位置的坯料上 预开切口， 切口便于在动模型芯和定模型芯吻合对接生成叶轮的过水通道。
4. 如权利要求 1 或 2所述的一种水泵叶轮的制造方法： 其特征在于， 所述的叶轮的后盖板 上留有型芯通过而形成的缺口由镶嵌件填补， 所述的镶嵌件为一体式结构或分体式结构或带 法兰组件的结构， 所述镶嵌件都可由注塑或压铸或挤压方法成形， 所述的镶嵌件组合在叶轮 上使叶轮的后盖板上的缺口填补； 填补后盖板上的缺口后的叶轮效率更高。
5. 用权利要求 1 所述的一种水泵叶轮的制造方法制造的叶轮， 其特征在于， 所述的叶轮为 单吸叶轮， 叶轮的后盖板上留有型芯通过而形成的缺口， 所述的缺口由镶嵌件填补或不用镶 嵌件填补直接使用， 所述的镶嵌件为一体式结构或分体式结构或带法兰组件的结构。
6. 用权利要求 2 所述的一种水泵叶轮的制造方法制造的叶轮， 其特征在于， 所述的叶轮为 由成对的两个叶轮组成一个两面吸水的双吸叶轮， 两个叶轮的后盖板在双吸叶轮的中部； 其 中一个后盖板有和水泵轴相配的轴孔或两个后盖板都有和水泵轴相配的轴孔； 叶轮的后盖板 上留有型芯通过而形成的缺口， 所述的缺口由镶嵌件填补或不用镶嵌件填补直接使用， 所述 的镶嵌件为一体式结构或分体式结构。
7. 带有权利要求 5 或 6所述的叶轮的水泵， 主要包括动力、 水泵轴、 叶轮， 其特征在于， 所述的叶轮是单吸叶轮或双吸叶轮； 单吸叶轮或双吸叶轮的缺口设置所述的镶嵌件， 或不设 置所述的镶嵌件。
8. 如权利要求 7 所述的水泵， 其特征在于， 所述的水泵的轴端用六角螺母压紧叶轮， 六角 螺母外部有一个防护罩子， 罩子固定在叶轮上， 罩子内部有六角凹穴和六角螺母相配， 防止 六角螺母松动， 罩子的端部成锥形减少水流阻力， 罩子内置有油脂防止六角螺母生锈。
9. 如权利要求 8 所述的水泵， 其特征在于， 所述的动力为电机， 水泵和电机同轴， 水泵上 连接有使水泵整体浮在水面或潜入水中的浮体， 电机通过上滤网连接泵壳， 双吸叶轮在泵壳 内， 水流可分别从上滤网和下滤网进入， 泵壳由上半泵壳和下半泵壳组成； 电机的下轴承座 和锥形密封件座组成机械密封室， 上滤网的进水从锥形密封件座周边进入泵壳； 所述电机靠 支承板固定在浮体上， 所述浮体是中空的塑料件， 浮体当中有穿过电机的通孔， 电机的支承 板通过浮体凸椽的槽， 旋转一定角度后， 安装在凸缘上， 凸缘上有连接支承板的孔； 电机的 外端盖顶上接有电源线或带有电源线的工作时露在水面上的接线盒， 所述的接线盒上盖上接 线盒盖组成蘑菇形的密封体， 接线盒内固定接线端子， 电机内的引出线通过密封后进入接线 盒连接接线端子， 电源线从接线盒的下部进入接线盒。
PCT/CN2013/086719 2013-05-29 2013-11-08 一种水泵叶轮的制造方法及水泵 WO2014190671A1 (zh)

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