CN108799194A - A kind of ceramic impeller - Google Patents

Abstract

The invention discloses a kind of ceramic impellers; impeller body including ceramic material; impeller body end face is equipped with the bonding slot of indent; the bonding groove bottom is bonding plane and is bonded with the impeller framework of metal material; on the outside of impeller framework, bonding slot opening be bonded with shape protection cap compatible with Nian Jie channel opening; be equipped in the middle part of impeller framework with connection, the footstalk for connecting impeller spindle on the outside of protection cap, protection cap is the one of which of wear-resistant ceramic, hard alloy or composite abrasion resistance material.Ceramic impeller provided by the invention, last a long time, shock resistance it is preferable, it is easy to accomplish enlargement.

Description

A kind of ceramic impeller

Technical field

The present invention relates to rotary motive power pumping unit field more particularly to a kind of ceramic impellers.

Background technology

In the industries such as ore dressing and smelting, some abrasive solid-liquid two-phase flows often are conveyed with centrifugal pump, this is often Select Pulp pump.Common abrasion resisting pump often uses Cr26, the manufacture of the wear-resistant materials such as the antifriction alloys such as Cr15Mo3 or rubber, these materials The pump of antifriction alloy manufacture is difficult to meet requirement under many operating modes.

It is well known that wear-resistant ceramic has the wearability more much higher than antifriction alloy, as silicon carbide ceramics, silicon nitride ceramics, Aluminium oxide ceramics, silicon nitride combined silicon carbide ceramics etc., wearability is than the high several times or even dozens of times of antifriction alloy, therefore CN 202100535 U, CN 205687817U, CN 107654414A, CN 108302043A, 202100546 U of CN etc. are disclosed The technical solution of some ceramic impellers.But there is also some problems for the wear-resistant ceramic impeller of these technical solutions manufacture, wherein most It is outstanding to have following three points：One is shock resistance is poor, the absorption problem of impact energy is examined when technical solution runs impeller Consider the energy insufficient, vibration or impact generate when technical measures not being taken to absorb impeller operation, is easily hit and breaks in use It splits.

CN 102032210B propose a kind of ceramic impeller, and as shown in figure 20, impeller includes impeller ceramic main body 3 ', gold Belong to internal thread axle sleeve 1 ' and metal alar plate 2 ', the metal alar plate 2 ' and ceramic impeller that metal internal thread axle sleeve 1 ' passes through regular polygon The solid and reliable auxiliary type of main body 3 ' links together；The metal alar plate 2 ' of regular polygon is sleeping by bonding and mechanical interlock mechanism It is fitted into the mating corresponding groove 6 ' on the surface that ceramic impeller main body 3 ' has back blade 4 ', the metal of regular polygon On the lateral surface of wing plate 2 ' have it is integrated therewith be process and with the mating corresponding auxiliary blade 7 ', 5 ' of back blade 4 ' be leaf One surface of wheel body 3 ' is provided with hole 10 ' in impeller bodies 3 ', hole 9 ', metal locking member is provided on metal alar plate 2 ' 11 ' pass through hole 9 ' and hole 10 ' that impeller bodies 3 ' and metal alar plate 2 ' link together.The technical solution can be solved preferably The strength problem of impeller, but following problem cannot be solved preferably, one is life problems, metal internal thread axle sleeve Even if 1 ', metal alar plate 5 ' and these three components of metal locking member 11 ' commonly use the best antifriction alloy of wear-resisting property using current, Its service life is also at maximum up to the 1/3 of wear-resistant ceramic, once these metalworks are worn down to a certain degree, impeller will disintegrate rupture And scrap, and impeller is the wear condition that can not observe these metalworks in use, that is to say, that this ceramics The service life of impeller is compared with antifriction alloy impeller, almost without advantage；The second is technological problems, it is well known that alloy it is wear-resisting Property and processability be contradictory, the good alloy of wearability is used if it is the service life for improving above three metal parts, it is inevitable The difficulty of processing that metal internal thread axle sleeve 1 ', metal alar plate 5 ' and 11 ' these three components of metal locking member can be increased, be at these Hardness reaches very high plus structures, process costs such as screw thread, regular polygons on the component of HRC60 or so.The third is stress concentration Problem, the torque of this impeller shown in Figure 19 are mainly the regular polygon by setting in impeller bodies 3 ' and metal alar plate 2 ' Come what is transmitted, and ceramic member is easy to generate larger internal stress in the corner of regular polygon in sintering procedure, these have compared with The position of big internal stress when bearing larger load easy stress concentrate and rupture.

The prior art is that impeller is difficult to enlargement there are one problem, it is well known that ceramics are also easy to produce in sintering process Crackle, and lead to component exhaustion, component is bigger, easier cracking, even if large-size ceramic impeller is not opened in sintering process Split, but burned finished parts easily rupture under external force generally there are there is larger internal stress, impact resistance also compared with Small size impeller is very different, is easy to rupture in use, even if this principle is light just as large-sized ceramic wafer Tapping is also easy to rupture, and small mosaic potsherd will not rupture one from tens of meters of high falling Sample.

In conclusion the wear-resistant ceramic impeller of the prior art there are the service life compared with short, technology difficulty is big, shock resistance is poor, It is difficult to the problem of enlargement.

Invention content

The object of the present invention is to provide a kind of ceramic impeller, last a long time, shock resistance it is preferable, it is easy to accomplish it is large-scale Change.

To achieve the above object, the present invention provides a kind of ceramic impeller, includes the impeller body of ceramic material, impeller body End face is equipped with the bonding slot of indent, which is bonding plane and is bonded with the impeller framework of metal material, in leaf Wheel skeleton outside, the opening for being bonded slot are bonded with shape protection cap compatible with Nian Jie channel opening, are set in the middle part of impeller framework Have with protection cap on the outside of connection, the footstalk for connecting impeller spindle, protection cap be wear-resistant ceramic, hard alloy or complex abrasion-proof The one of which of material.

As a further improvement on the present invention, the impeller framework includes that outer profile is compatible with the Nian Jie groove bottom Drive disk, footstalk are located at the middle part of drive disk backplate, and drive disk inner face is mutually bonded with the bonding plane of the Nian Jie slot.

As a further improvement of the present invention, the protection cap includes drive disk backplate and footstalk sheath, the driving Disk backplate inner face is mutually bonded with the drive disk, and footstalk sheath is set on the footstalk lateral wall and is mutually glued with it It connects.

As a further improvement of the present invention, the drive disk is rounded, and radial dimension is impeller body diameter 0.3-0.97 times.

As a further improvement of the present invention, the impeller body includes driving cover board, and the bonding slot is located at driving Axis, which is rotated about, on one of cover board end face, on another end face of the driving cover board is disposed with multiple primary blades, The outer of cover board is driven to be equipped with the first back blades.

As a further improvement of the present invention, the primary blades are more than 30mm in the thickness of outlet side or are more than the leaf Take turns ontology diameter 0.1 times.

As a further improvement of the present invention, the impeller body further includes being arranged with the driving cover board coaxial line Driven cover board, the primary blades are respectively positioned between driving cover board and driven cover board and are fixedly connected with the two.

As a further improvement of the present invention, at least two are equipped with towards the side of bonding plane in the impeller framework to dash forward Go out part, impeller body is equipped with screw hole, and prodger is equipped with screw thread and stretches in the screw hole, leads between prodger and screw hole Adhesive-isolation is crossed, the prodger completely cuts off with free surrounding space, and each prodger is uniformly distributed around the rotation axis of impeller body.

As a further improvement of the present invention, the rotation axis on the bonding plane of the bonding slot around impeller body is uniformly distributed There are multiple boss, the impeller framework to be equipped with multiple shapes axial pass-through holes corresponding with the boss, boss stretches to In axial pass-through holes.

As a further improvement of the present invention, the driving cover board or driven cover board are equipped with stress relief grooves, stress Part of the release groove along driving cover board or driven cover board between adjacent two primary blades extends.

Advantageous effect

Compared with prior art, the advantages of ceramic impeller of the invention, is：

1, by mechanics principle it is found that the torque overwhelming majority of impeller can be passed on by the outer of drive disk, and drive disk is interior Along hardly transmission torque, therefore the diameter of larger drive disk is conducive to make the bonding plane for having bigger between drive disk and impeller body Product and torque radius, thus only bonding agent is leaned on to connect by after the diameter of drive disk suitably increasing under some running on the lower load Enough torques can be transmitted；And have the bonding agent of certain elasticity, the energy generated is vibrated or impacted when can absorb impeller operation, Torque mainly is transmitted using regular polygon compared with the prior art, there is better shock resistance；Another effect of drive disk is Bear the axial force of impeller, impeller is acted on when running by fluid, to bear the axial force of a direction suction inlet, the power and is raised Journey is directly proportional, and since the driving disc area of the present invention is larger and has preferable axial strength, most axial force will pass through drive Moving plate backplate acts directly on drive disk, and acts on that the axial force on impeller body is smaller, this can prevent impeller body Bonding agent between drive disk is because of axial force damage；

2, there are two purposes, one can prevent skeleton and bonding agent from being denuded by fluid for setting drive disk backplate, Second is that being conducive to improve the adhesive effect between drive disk and impeller body；After drive disk backplate and footstalk sheath are set, impeller Skeleton is no longer influenced by the abrasion of fluid, and the manufactures such as processing performance good material such as 45# steel, Q235 may be used, thus can change The craftsmanship of kind impeller, reduces manufacturing cost；

3, in view of there is the abrasion operating mode of bulky grain at some, primary blades are extremely serious in the abrasion of outlet side, at this After abrasion, impeller body can be damaged because of mechanical strength deficiency, and the abrasion at the other positions of impeller at this time is relatively gently not yet lost Effect designs primary blades more than 30mm or more than the 10% of impeller diameter in the thickness of outlet side, and primary blades in common impeller Exit thickness be usually no more than the 8% of impeller diameter, though the present invention cause manufacturing cost to be risen, leaf can be prevented The early time discards of wheel improve the service life of impeller；

4, be provided on the drive disk it is several axially penetrate through hole, be provided on bonding plane to driving end extend it is convex Platform, the boss extend to it is described axially penetrate through in hole, this structure can greatly improve the anti-twisting property of impeller；

5, increase prodger and the engaging force between impeller body and impeller framework can be improved, prevent impeller framework and impeller sheet Body is disengaged because of axial force, is not only advantageous to improve the torque resistant ability of impeller, is also helped the anti-axis for further increasing impeller To the ability of power, this is significant to the lift for improving pump, it is well known that when the lift of pump is higher, meeting when impeller is run The axial force of larger direction feed inlet is generated, and the impeller of the prior art easily holds when high lift works because the axial force is led Impeller body and footstalk is caused to disengage and rupture of disintegrating；

6, since impeller body uses ceramic member, the screw thread on screw hole that can only process before sintering, screw thread is in sintering procedure In can deform, it is difficult to and same nominal size external screw thread proper engagement, if being screwed into ceramic screw thread by metal threaded by force In, easily ceramic member is made to rupture, if the path of screw hole is made to be more than the major diameter of prodger, bonding agent is filled between internal and external threads, then It can prevent ceramic member from rupturing；

7, large-size ceramic part is in sintering process, easily because internal stress ruptures, even if sintering process does not rupture There are larger internal stress, on driving cover board or driven cover board, stress relief grooves are set, stress relief grooves along driving cover board or Part between adjacent two primary blades extends on driven cover board, ceramic member can be greatly decreased is generated in sintering process and broken The probability split, and the internal stress of sintered products is reduced, make ceramic member be not susceptible to rupture；Bonding agent is filled in stress relief grooves Or composite abrasion resistance material, it on the one hand can prevent impeller from being ruptured under external force along stress relief grooves in the process of running, separately On the one hand, be hit the energy born when bonding agent and composite abrasion resistance material can absorb impeller operation, to improve impeller Impact resistance.

By description below and in conjunction with attached drawing, the present invention will become more fully apparent, these attached drawings are for explaining the present invention Embodiment.

Description of the drawings

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with Obtain other attached drawings according to these attached drawings.

Fig. 1 is the sectional view of the embodiment of the present invention 1；

Fig. 2 is the stereogram of the impeller body of the embodiment of the present invention 1；

Fig. 3 is the sectional view of the embodiment of the present invention 2；

Fig. 4 is the stereogram of impeller body in the embodiment of the present invention 2；

Fig. 5 is the sectional view of impeller body in the embodiment of the present invention 2；

Fig. 6 is sectional views of the Fig. 5 at A-A；

Fig. 7 is the three-dimensional cutaway view of impeller framework in the embodiment of the present invention 2；

Fig. 8 is the three-dimensional cutaway view of the impeller framework in the embodiment of the present invention 3；

Fig. 9 is the sectional view of impeller body in the embodiment of the present invention 3；

Figure 10 is the sectional view of the embodiment of the present invention 4；

Figure 11 is the sectional view of impeller body in the embodiment of the present invention 4；

Figure 12 is the sectional view of the embodiment of the present invention 5；

Figure 13 is the sectional view that cover board and blade are driven in the embodiment of the present invention 5；

Figure 14 is the stereogram that cover board and blade are driven in the embodiment of the present invention 5；

Figure 15 is the sectional view of driven cover board in the embodiment of the present invention 5；

Figure 16 is the sectional view of the embodiment of the present invention 6；

Figure 17 is the sectional view of primary blades in the embodiment of the present invention 6；

Figure 18 is the sectional view that cover board is driven in the embodiment of the present invention 6；

Figure 19 is the sectional view of driven cover board in the embodiment of the present invention 6；

Figure 20 is the schematic diagram for the ceramic impeller that CN 102032210B are proposed.

Specific implementation mode

The embodiment of the present invention is described referring now to the drawings.

Embodiment 1

The specific implementation mode of the present invention is as shown in Figure 1 to Figure 2, and impeller is the double shrouded wheel of diameter 300mm, the drive of impeller Dynamic cover board 1001, primary blades 1003 and driven cover board 1002 are the entirety using alumina sintering, and drive disk 301 is outer diameter The circle of 270mm, i.e. its radial dimension are 0.9 times of impeller diameter, and the outer of driving cover board 1001 is provided with the first back blades 1005, the axial width of drive disk 301 is 5mm；The material of drive disk backplate 200 is aluminium oxide ceramics, and outside is provided with the Two back blades 201, the axial width that drive disk backplate 200 includes the second back blades 201 are 20mm；Drive disk 301 and footstalk 302 Material be 45# steel, between drive disk 301 and bonding plane 1004, between drive disk 301 and drive disk backplate 200 use polyamides Amine bonding agent is bonded into an entirety, also polyamide glue is used to be bonded between footstalk sheath 500 and footstalk 302, footstalk shield The material of set 500 is wearing composite material, and main ingredient is 85% silicon-carbide particle, 15% phenolic resin.

In the present embodiment, coarse processing is made to the surface of bonding plane 1004, improves the roughness on its surface, is conducive to Improve the reliability of bonding.

Obviously, for the diameter of drive disk 301 closer to the diameter of driving cover board 1001, bonding force between the two is bigger, drives The torque radius of 301 outer of Moving plate is also bigger, and impeller bears torque and the ability of axial force is bigger.The present embodiment is simple in structure, But must can just there be higher reliability when the diameter of drive disk 301 is closer to the diameter of driving cover board 1001, simultaneously as The second back blades 201 is provided on drive disk backplate 200, therefore the axial width of drive disk backplate 200 will be made thicker ability Meeting its intensity requirement, this makes the appearance and size of impeller that cannot meet waterpower requirement sometimes, and the hydraulic performance of pump is caused to decline, Therefore the present embodiment is suitable for the operating mode that lift is relatively low, axial force is smaller.

Embodiment 2

Specific embodiments of the present invention 2 are double shrouded wheel, impeller diameter 390mm, including silicon carbide refering to shown in Fig. 3-7 The impeller body 100 of ceramic material and the impeller framework 300 of 45# steel materials, impeller body 100 include driving cover board 1001, master Blade 1003 and driven cover board 1002, the footstalk 302 and main shaft of impeller framework 300 are screw-thread fit, and the diameter of drive disk 301 is outside Shape size is 175mm, is 0.45 times of impeller diameter, the axial width of drive disk 301 is 6mm, is provided with several axial directions Through hole 3011, driving cover board 1001 on set there are one and drive disk 301 be bonded bonding plane 1004, in impeller framework 300 Outside setting to also have drive disk backplate 200, the thickness of drive disk backplate 200 be 12mm, be provided on driving cover board 1001 First back blades 1005, is not provided with the second back blades on drive disk backplate 200；In the present embodiment, 200 He of drive disk backplate 500 material of footstalk sheath is silicon nitride combined silicon carbide ceramics, and the two is the integral sintered entirety that can not be split；Impeller 500 glued doses of ontology 100, impeller framework 300, drive disk backplate 200 and footstalk sheath bondings are at an entirety.

As shown in Fig. 4, Fig. 5, Fig. 6, Fig. 7, the boss extended to 200 direction of drive disk backplate is provided on bonding plane 1004 1010,1010 high 5mm of boss extend to axially penetrating through in hole 3011 of being arranged on drive disk 301；Is additionally provided on bonding plane One hole 1006 is provided with screw thread on first hole 1006, the prodger 3012 being attached thereto, prodger is additionally provided on drive disk 301 Screw thread also is provided on 3012, diameter is less than the screw thread being arranged on 1006, with viscous between prodger 3012 and the first hole 1006 Connect agent bonding.

Screw thread can also be provided on drive disk, prodger is bolt, is bolted on screw thread, from impeller framework Torque can be transferred to primary blades acting by bonding agent and prodger, using suitable bonding agent for the phase between ceramic member It is mutually bonded not but not significantly reduces the intensity of ontology impeller, on the contrary, the presence of bonding agent also helps when absorbing impeller operation The energy that vibration and impact generate, is conducive to prevent impeller from rupturing, it is clear that this structure is advantageous for the big shape of impeller 's.

In the present embodiment, as shown in fig. 6, primary blades 1003 export work in the thickness of outlet side in primary blades 1003 Make face to inoperative vertical thickness δ=65mm, be the 16.6% of impeller diameter, and the blade of prior art ceramic pump is going out Thickness is usually no more than the 10% of impeller diameter at mouthful, and the blade of thickening can not only improve the intensity of impeller, be also beneficial to set Set the first hole 1006.

Embodiment 3

As shown in Figure 8, Figure 9, prodger 3012 is welded on drive disk 301, and prodger 3012 is that setting is threaded Taper, the smaller one end of diameter is connect with drive disk 301 in taper prodger 3012, and the one end being relatively large in diameter is free end, this Kind structure is conducive to prevent prodger 3012 from being pulled out by external force from the first hole 1006.First hole 1006 is also configured to taper, The smaller one end of diameter is to be open and on the bonding plane 1004 on the first hole of taper 1006, the one end being relatively large in diameter be bottom end simultaneously In impeller body 100, it is smaller that one end that taper prodger 3012 is relatively large in diameter is slightly less than diameter on the first hole of taper 1006 One end can be relatively reliable by 301 He of drive disk after being filled with bonding agent between prodger 3012 and the first hole 1003 Impeller body 100 is fixed together.

Embodiment 4

Refering to fig. 1 shown in 0 and Figure 11, impeller is half-opened impeller, and impeller body 100 includes driving cover board 1001 and main lobe Piece 1003, the first hole 1006 are the through-hole across primary blades 1003, and prodger 3012 and drive disk 301 are threadedly attached in one It rises, is bonded with hole stifled 400 in the outside in the first hole 1006, the material in hole stifled 400 is silicon carbide ceramics.Due to prodger frequently with Metal material, wearability is poor, and providing holes stifled 400 can prevent prodger 3012 by fluid erosion.

Embodiment 5

As shown in Figure 12 to Figure 15, impeller is double shrouded wheel, and impeller diameter 630mm, impeller body 100 includes that driving is covered Plate 1001, primary blades 1003 and driven cover board 1002 drive cover board 1001 and primary blades 1003 for the entirety of a sinter molding, Driven cover board 1002 is the entirety of another sinter molding.There are threaded connection, drive disk between impeller framework 300 and prodger 3012 301 a diameter of 340mm is 0.54 times of impeller diameter；The radial thickness of drive disk 301 is 14mm, is impeller diameter 0.022 times；Thickness of the blade in exit is 84mm, is 0.133 times of impeller diameter；It is provided with 1006 hole of the first hole and passes through drive Dynamic cover board 1001 and primary blades 1003 are provided with the second hole 1007 on driven cover board 1002, are provided with prodger 3012 and pass through the One hole 1006, the second hole 1007 link together driven cover board 1002, primary blades 1003 and driving cover board 1001, prodger Clearance filled between 3012 and first hole 1006, the second hole 1007 has a bonding agent, and primary blades 1003 and driven disc 1002 connect It closes position and is filled with bonding agent, the outside in the second hole 1007 is provided with hole stifled 400, material is aluminium oxide ceramics.

As shown in figure 14, it is driven in the present embodiment and is provided with 5 stress relief grooves 1009, stress relief grooves on cover board 1001 1009 width is 2-8mm.Stress relief grooves 1009 are processed before sintering, and ceramic member ruptures when sintering can be greatly reduced Probability.Impeller assemble when bonding agent can be filled in the line of rabbet joint, can also filled composite wear-resistant material, small ceramics can also be utilized Piece and bonding agent or composite abrasion resistance material are filled.

Embodiment 6

As shown in Figure 16 to Figure 19, impeller is double shrouded wheel, and impeller body 100 includes driving cover board 1001, primary blades 1003 and driven cover board 1002, driving cover board 1001 is the ceramic body of a sinter molding, and driven cover board 1002 is another sintering Molding ceramic body；Impeller is equipped with 5 primary blades 1003, is each the ceramic body of independent sinter molding, is provided with the Three holes 10031；There is threaded connection between skeleton 300 and prodger 3012, is provided through the first hole of driving cover board 1001 1006 holes are provided through its second hole 1007 on driven cover board 1002；Be provided with prodger 3012 across the first hole 1006, Second hole 1007 and third hole 10031 link together driven cover board 1002, primary blades 1003 and driving cover board 1001, prominent Clearance filled between part 3012 and the first hole 1006, the second hole 1007 and third hole 10031 has bonding agent, 1003 He of primary blades The junction of driven disc 1002 is filled with bonding agent, is additionally provided on driving cover board 1001 and coincide with 1003 profile of primary blades 5 at groove 1008.

When impeller assembles, bonding agent or composite abrasion resistance material can be smeared in groove 1008, utilizes the profile of groove 1008 Fixed primary blades 1003, not only can simply and accurately realize positioning, can also increase primary blades 1003 and driving cover board Binding force between 1001 improves the integral strength of impeller.

In the bonding agent, abrasion resistant particles are added with, the abrasion resistant particles are silicon carbide, silicon nitride, corundum, oxidation Zirconium, garnet one kind or combinations thereof, can improve the antiwear property of bonding agent, and experiment also shows that the addition of abrasion resistant particles can To improve the shock resistance of bonding agent.

According to the difference of fluid media (medium), the material of drive disk backplate and footstalk sheath can select different materials, such as be situated between Coarse granule is more in matter, then material can be selected for potsherd or hard metal tip, then can be with when coarse granule is less in medium Select composite abrasion resistance material.

According to torque, axial force and impact condition suffered by impeller, the radial dimension of the drive disk can be set to leaf 0.35-0.97 times of wheel diameter, axial dimension are 0.01-0.05 times of impeller diameter；The radial dimension of drive disk backplate is leaf 0.35-1 times of wheel diameter, axial dimension are 0.03-0.15 times of impeller diameter.

It is counted according to certain ore dressing plant, using the ceramic impeller of the prior art in the rupture rate for running 3 months inner impellers on 5% left side The right side, and use the technology of the present invention manufacture ceramic impeller this select factory run 3 months inner impellers rupture rate drop to it is current 0.5%, therefore wear-resistant ceramic impeller using the present invention is significantly improved compared with the reliability of the ceramic impeller of the prior art.

Above in association with most preferred embodiment, invention has been described, but the invention is not limited in implementations disclosed above Example, and modification, equivalent combinations that various essence according to the present invention carry out should be covered.

Claims (10)

1. a kind of ceramic impeller includes the impeller body (100) of ceramic material, which is characterized in that impeller body (100) end face It is equipped with the bonding slot of indent, which is bonding plane (1004) and is bonded with the impeller framework (300) of metal material, Opening in impeller framework (300) outside, bonding slot is bonded with shape protection cap compatible with Nian Jie channel opening, impeller bone Be equipped in the middle part of frame (300) with connection, the footstalk (302) for connecting impeller spindle on the outside of protection cap, protection cap be wear-resistant ceramic, The one of which of hard alloy or composite abrasion resistance material.

2. a kind of ceramic impeller according to claim 1, which is characterized in that the impeller framework (300) includes outer profile Drive disk (301) compatible with the Nian Jie groove bottom, footstalk (302) are located at the middle part of drive disk backplate (200), drive disk (301) inner face is mutually bonded with the bonding plane (1004) of the Nian Jie slot.

3. a kind of ceramic impeller according to claim 2, which is characterized in that the protection cap includes drive disk backplate (200) it is mutually bonded with the drive disk (301) with footstalk sheath (500), drive disk backplate (200) inner face, footstalk Sheath (500) is set on the footstalk (302) lateral wall and is mutually bonded with it.

4. a kind of ceramic impeller according to claim 2 or 3, which is characterized in that the drive disk (301) is rounded, Radial dimension is 0.3-0.97 times of impeller body (100) diameter.

5. a kind of ceramic impeller according to claim 1, which is characterized in that the impeller body (100) includes that driving is covered Plate (1001), the bonding slot is located on one of driving cover board (1001) end face, described to drive the another of cover board (1001) Axis is rotated about on one end face and is disposed with multiple primary blades (1003), and the outer of driving cover board (1001) is equipped with the first accessory lobes Piece (1005).

6. a kind of ceramic impeller according to claim 5, which is characterized in that thickness of the primary blades (1003) in outlet side Spend 0.1 times being more than 30mm or being more than the impeller body (100) diameter.

7. a kind of ceramic impeller according to claim 5, which is characterized in that the impeller body (100) further includes and institute The driven cover board (1002) of driving cover board (1001) coaxial line arrangement is stated, the primary blades (1003) are respectively positioned on driving cover board (1001) it is fixedly connected between driven cover board (1002) and with the two.

8. a kind of ceramic impeller according to claim 1, which is characterized in that towards bonding on the impeller framework (300) The side in face (1004) is equipped at least two prodgers (3012), and impeller body (100) is equipped with screw hole, in prodger (3012) It equipped with screw thread and stretches in the screw hole, prodger (3012) passes through adhesive-isolation, the prodger between screw hole (3012) completely cut off with free surrounding space, each prodger (3012) is uniformly distributed around the rotation axis of impeller body (100).

9. a kind of ceramic impeller according to claim 1, which is characterized in that it is described bonding slot bonding plane (1004) on around The rotation axis of impeller body (100) is evenly equipped with multiple boss (1010), the impeller framework (300) be equipped with multiple shapes with The corresponding axial pass-through holes of the boss (1010) (3011), boss (1010) stretch in axial pass-through holes (3011).

10. a kind of ceramic impeller according to claim 7, which is characterized in that the driving cover board (1001) or driven lid Plate (1002) is equipped with stress relief grooves (1009), and stress relief grooves (1009) are along driving cover board (1001) or driven cover board (1002) part between adjacent two primary blades (1003) extends on, be filled in stress relief grooves (1009) bonding agent or Composite abrasion resistance material.