CN107956703A - A kind of abrasion-proof corrosion-proof pump - Google Patents
A kind of abrasion-proof corrosion-proof pump Download PDFInfo
- Publication number
- CN107956703A CN107956703A CN201711390735.XA CN201711390735A CN107956703A CN 107956703 A CN107956703 A CN 107956703A CN 201711390735 A CN201711390735 A CN 201711390735A CN 107956703 A CN107956703 A CN 107956703A
- Authority
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- China
- Prior art keywords
- proof
- abrasion
- liner
- sealing surface
- metallic framework
- Prior art date
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- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 55
- 230000006837 decompression Effects 0.000 claims abstract description 41
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 7
- 238000005299 abrasion Methods 0.000 claims description 30
- 239000002131 composite material Substances 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 20
- 230000008034 disappearance Effects 0.000 claims description 17
- 239000002245 particle Substances 0.000 claims description 10
- 239000007769 metal material Substances 0.000 claims description 6
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 6
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 4
- 239000002223 garnet Substances 0.000 claims description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 4
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 3
- 238000005253 cladding Methods 0.000 claims description 2
- 239000010431 corundum Substances 0.000 claims description 2
- 229910052593 corundum Inorganic materials 0.000 claims description 2
- 210000004907 gland Anatomy 0.000 claims 2
- 210000000988 bone and bone Anatomy 0.000 claims 1
- 238000005260 corrosion Methods 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 229910000599 Cr alloy Inorganic materials 0.000 description 2
- 239000007767 bonding agent Substances 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 239000000788 chromium alloy Substances 0.000 description 2
- 239000010977 jade Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229920006387 Vinylite Polymers 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009854 hydrometallurgy Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
-
- 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
-
- 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
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/06—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metals
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of abrasion-proof corrosion-proof pump, including impeller, main shaft and the preceding pump housing mutually fastened and the rear pump housing, the preceding pump housing includes suction inlet, front casing and preceding liner, the pump housing includes rear casing and rear liner afterwards, the outside of liner is equipped with accessory impeller afterwards and decompression is covered, the sealed end of decompression lid is equipped with cyclic sealing gasket and towards rear liner, interior lining is equipped with metallic framework afterwards, metallic framework includes the exposed portion towards decompression lid, liner includes the sealing surface towards decompression lid afterwards, sealing surface is collectively forming the cavity for accommodating accessory impeller with the decompression lid fastened on it, exposure portion is in sealing surface periphery, the outer profile size of sealing surface is greater than or equal to the Internal periphery size of gasket.Abrasion-proof corrosion-proof provided by the invention pump, it is rear in the metallic framework of lining will not be with media contact, the longer life expectancy of metallic framework and rear liner.
Description
Technical field
The present invention relates to rotary motive power pumping unit field, more particularly to a kind of abrasion-proof corrosion-proof to pump.
Background technology
In the industry such as ore dressing and smelting, often conveying some with centrifugal pump has abrasion or corrosive solid-liquid two-phase flow,
At this moment tend not to obtain the preferable service life using the flow passage part of metal material, can be obtained preferably using composite abrasion resistance material
Wearability, these composite abrasion resistance materials are mainly made of abrasion resistant particles and bonding agent, and the material of most common abrasion resistant particles is firm
Jade, carborundum, zirconium oxide, garnet, silicon nitride etc. form, and bonding agent is typically resin, such as phenolic resin.This kind of composite wood
The abrasion resisting pump flow passage part service life of material manufacture can reach more than 3 times of Cr26 under many use conditions, now start to be applied to
Manufacture wear-resisting pump.
It is more common using the dynamic seal with accessory impeller in above-mentioned operating mode, relative mechanical sealing means, dynamic seal
Easy to maintenance, cost is relatively low.
Chinese patent literature CN106545497A, CN107288938A, CN107035696A, CN105134611A,
CN105927595A provides 5 kinds of abrasion resisting pumps of the present inventor's proposition, flow passage part is manufactured using composite abrasion resistance material, using band
The dynamic sealing device of accessory impeller, as shown in Figure 12 and Figure 13, pump includes bearing portion 101', main shaft 102', impeller to its concrete structure
110', the pump housing are split into the preceding pump housing and rear pump housing two parts；The preceding pump housing is made of front casing 109' and preceding liner 108', rear pump
Body is made of rear casing 106' and rear liner 107', be provided between rear casing 106' and rear liner 107' decompression lid 103' and
Accessory impeller 104', does not rush down leakage, in decompression lid 103' and rear liner to ensure to depressurize to cover between 103' and rear liner 107'
Gasket 111' is provided between 107'；In assembling and in use, to prevent to rush down leakage, decompression lid 103' and rear liner 107'
Between must apply very big thrust to compress gasket 111', it is well known that the mechanical strength of composite abrasion resistance material is poor,
If the thrust for depressurizing lid 103' is applied directly on the composite abrasion resistance material of rear liner 107', rear liner is easy to cause
107' ruptures, therefore metallic framework 105' is provided with rear liner 107', and gasket is contacted by metallic framework 105'
111' simultaneously bears the pressure that decompression lid 103' is applied by gasket 111', and metallic framework 105' is manufactured by carbon steel, had preferable
Mechanical strength, such a structure cause the intensity of the rear pump housing to be guaranteed, while also obtain preferable sealing effect, separately
On the one hand, relatively simple in the sealing surface technique that manufacture and gasket 111' coordinate on metallic framework 105', cost is relatively low.
But the abrasion resisting pump of above-mentioned prior art manufacture, there are problem, water is sealed one is working as in following two kinds lower situation uses
When pressure or underfed, abrasive media can flow backwards and touch accessory impeller 104' and depressurize lid 103', accelerate accessory impeller
104' and while decompression lid 103' abrasions, also can rapidly wear metal skeleton 105' and cause to set on metallic framework 105'
The sealing surface put destroys, and to solve this problem, the material of metallic framework 105' is replaced with the more preferable metal of wearability by us
Material such as high-chromium alloy etc., can extend the service life of metallic framework 105' really, even if in this way, the use of metallic framework 105'
Service life is still significantly shorter than the normal service life of rear liner 107' and causes rear liner 107' to scrap.The second is medium is corrosive
When, metallic framework 105' even uses the stainless steel making of corrosion resistant, equally there is also the service life it is shorter the problem of, this is because existing
Common stainless steel cannot solve the problems, such as wear-resisting and corrosion resistant at the same time.
The content of the invention
The object of the present invention is to provide a kind of abrasion-proof corrosion-proof pump, the metallic framework of rear interior lining will not be with media contact, longevity
Order longer.
To achieve the above object, the present invention provides a kind of abrasion-proof corrosion-proof pump, including impeller, main shaft and the front pump mutually fastened
Body and the rear pump housing, the preceding pump housing include suction inlet, front casing and preceding liner, and the rear pump housing includes rear casing and rear liner, rear liner
Outside is equipped with accessory impeller and decompression and covers, and the sealed end for depressurizing lid is equipped with cyclic sealing gasket and is equipped with towards rear liner, rear interior lining
Metallic framework, metallic framework include towards decompression lid exposed portion, rear liner include towards decompression lid sealing surface, sealing surface with
The decompression lid fastened on it is collectively forming the cavity for accommodating accessory impeller, and exposure portion is in sealing surface periphery, the foreign steamer of sealing surface
Wide size is greater than or equal to the Internal periphery size of gasket.
As a further improvement on the present invention, the sealing surface is ring plain.
Further as the present invention is improved, and the exposed portion is equipped with datum plane, and the datum plane is positioned at sealing
Face periphery, both are adjacently positioned and in the same plane.
Further as the present invention is improved, and the metallic framework is included by the disappearance portion of the rear liner cladding, institute
State middle part extension of the disappearance portion from the Internal periphery edge of the exposed portion to metallic framework.
Further as the present invention is improved, and the disappearance portion is the cyclic structure parallel with the sealing surface, disappearance
There are multiple passages in portion, the extending direction and sealing surface of the passage are perpendicular.
Further as the present invention is improved, and the gasket is the rounded O-ring in section.
Further as the present invention is improved, and the side of the gasket towards the decompression lid sealed end is equipped with annular
Groove, the sealed end for depressurizing lid are embedded in the annular groove.
Further as the present invention is improved, and the decompression lid uses metal material, and the madial wall for depressurizing lid is equipped with
First composite wear-resistant layer.
Further as the present invention is improved, and is provided with skeleton on the accessory impeller, and the skeleton surface is covered with the
Two composite wear-resistant layers.
Further as the present invention is improved, and the preceding liner and rear liner include composite abrasion resistance material, described compound
The component of wear-resistant material includes the abrasion resistant particles that weight ratio is 50%-95%, and the components of abrasion resistant particles includes carborundum, just
Jade, silicon nitride, garnet, one kind of zirconium oxide or its combination, the component of abrasion resistant particles further include the tree that weight ratio is 5-40%
Fat.
Beneficial effect
Compared with prior art, it is the advantages of abrasion-proof corrosion-proof of the invention pump：
1st, the sealing surface of rear interior lining is engaged with the gasket of decompression lid, since the exposure portion of metallic framework is in sealing
Face periphery, the outer profile size of sealing surface are greater than or equal to the Internal periphery size of gasket, between decompression lid and sealing surface
The medium of cavity will not be contacted with the exposure portion of metallic framework, avoided metallic framework by dielectric corrosion or abrasion, significantly prolonged
The service life of metallic framework is grown, so as to extend the service life of rear liner；
2nd, sealing surface is perpendicular to main shaft；Metallic framework further includes the disappearance portion coated by rear liner, and disappearance portion is from exposure
The Internal periphery edge in portion extends to the middle part of metallic framework, and this design can make disappearance portion not contact abrasion or corrosivity
Medium while, bear the pressure that decompression lid is applied to lining in rear by gasket, so rear liner will not be subject to crushing；
3rd, exposed portion is provided perpendicular to the datum plane of main shaft, and the purpose is to can utilize the datum plane as processing
Benchmark is processed the composite abrasion resistance material of annular sealing surface, to ensure verticality of the annular sealing surface with respect to main shaft, so that
Ensure the sealing effect of decompression sealing cushion for cover；
4th, some perforative passages are provided with disappearance portion, the engaging force of metallic framework and rear liner can be improved, prevented
The composite abrasion resistance material of interior lining comes off from metallic framework afterwards；
5th, the sealing surface is planar annular, and can further be easy to ring packing in same plane with datum plane
The centering in face and processing；
6th, the outside of decompression lid is metal material, and inner wall is provided with the first composite wear-resistant layer, and accessory impeller is provided with metal material
The skeleton of matter, the skeleton surface can have covered with the second composite wear-resistant layer, these structures ensureing decompression lid and accessory impeller
While preferable intensity, there is more preferable wear and corrosion behavior.
It will be become more fully apparent by following description and with reference to attached drawing, the present invention, these attached drawings are used to explain the present invention
Embodiment.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the sectional view of the embodiment of the present invention 1；
Fig. 2 is partial enlarged views of the Fig. 1 at B；
Fig. 3 is locally to remove the sectional view after depressurizing lid, accessory impeller, gasket shown in Fig. 2；
Fig. 4 is the three-dimensional cutaway view of metallic framework in embodiment 1；
Fig. 5 is the sectional view of the embodiment of the present invention 2；
Fig. 6 is partial enlarged views of the Fig. 5 at C；
Fig. 7 is locally to remove the sectional view after depressurizing lid, accessory impeller, gasket shown in Fig. 6；
Fig. 8 is the three-dimensional cutaway view of metallic framework in the embodiment of the present invention 2；
Fig. 9 is the sectional view that lid is depressurized in the embodiment of the present invention 2；
Figure 10 is the sectional view of gasket in the embodiment of the present invention 2；
Figure 11 is the sectional view of accessory impeller in the embodiment of the present invention 2；
Figure 12 is a kind of abrasion resisting pump sectional view disclosed in CN107035696A_；
Figure 13 is partial enlarged views of the Figure 12 at D.
Embodiment
The embodiment of the present invention is described referring now to attached drawing.
Embodiment 1
As shown in Figures 1 to 4, a kind of abrasion-proof corrosion-proof pumps the embodiment of the present invention, including impeller 110, main shaft 102
The preceding pump housing mutually fastened and the rear pump housing, the preceding pump housing includes suction inlet, front casing 109 and preceding liner 108, after the rear pump housing includes
Shell 106 and rear liner 107, the outside of rear liner 107 are equipped with accessory impeller 104 and decompression lid 103, depressurize the sealed end of lid 103
Metallic framework 105 is equipped with equipped with cyclic sealing gasket 111 and towards rear liner 107, rear liner 107, metallic framework 105 includes court
To the exposed portion 1054 of decompression lid 103, rear liner 107 includes the sealing surface 1071 towards decompression lid 103, sealing surface 1071 and button
The decompression lid 103 closed on it is collectively forming the cavity for accommodating accessory impeller 104, and exposed portion 1054 is located at the periphery of sealing surface 1071,
The outer profile size of sealing surface 1071 is greater than or equal to the Internal periphery size of gasket 111.
Sealing surface 1071 and main shaft 102 are perpendicular.
The preceding liner 108 and rear liner 107 include composite abrasion resistance material, and the component of the composite abrasion resistance material includes
Weight ratio is the abrasion resistant particles of 50%-95%, and the component of abrasion resistant particles includes carborundum, corundum, silicon nitride, garnet, oxidation
One kind of zirconium or its combination, the component of abrasion resistant particles further include the resin that weight ratio is 5-40%.
In the present embodiment, the main ingredient of preceding liner 108 and rear liner 107 is (weight)：36 mesh carborundum 50-70%,
100 mesh carborundum 20-25%, vinylite 15-25%.
The both ends of main shaft 102 are arranged with bearing portion 101.
The sealing surface 1071 is ring plain.
The exposed portion 1054 is equipped with the datum plane 1051 perpendicular with the main shaft 102, the datum plane 1051
Positioned at the periphery of sealing surface 1071, both are adjacently positioned and in the same plane.
The metallic framework 105 includes the disappearance portion 1052 coated by liner 107 after described, and the disappearance portion 1052 is from institute
The Internal periphery edge for stating exposed portion 1054 extends to the middle part of metallic framework 105.
The disappearance portion 1052 is the cyclic structure parallel with the sealing surface 1071, is evenly equipped with disappearance portion 1052 multiple
Passage 1053, the extending direction and sealing surface 1071 of the passage 1053 are perpendicular.
The gasket 111 is the rounded O-ring in section.
To ensure verticality of the sealing surface 1071 with respect to main-shaft axis, positioned after processing before liner 107 by mould,
Make datum plane 1051 vertical with the axis of main shaft 102, so can easily be put down when processing sealing surface 1071 using benchmark
Face 1051 is used as benchmark, and datum plane 1051 and sealing surface 1071 are arranged on approximately the same plane, and the internal diameter of datum plane 1051 is
335mm, the outside diameter of sealing surface 1071 is 335mm.
The groove of placement sealing Cover Gasket 111 is provided with decompression lid 103, seals O-ring of the Cover Gasket 111 for a string diameter 5mm,
The major diameter of O-ring is 330mm, path 340mm.Distance of the datum plane 1051 away from main shaft is 335mm, therefore datum plane
1051 to main shaft distance be more than gasket 111 interior edge to main shaft distance (i.e. the path of O-ring) 330mm, so
Datum plane 1051 would not touch medium, so as to avoid therefore being worn or corroding.
Metallic framework 105 can be weldment, and when welding forms some perforative passages 1053, liner after can so ensureing
107 wear-resisting composite can be firmly combined together with metallic framework 105, and have preferable mechanical strength.
The power that decompression lid 103 is applied on rear liner 107 by sealing Cover Gasket 111, gold is delivered to by sealing surface 1071
In the disappearance portion 1052 for belonging to skeleton 105, so while sealing effect is ensured, rear liner 107 can be prevented because intensity is insufficient and
Damage.
Embodiment 2
As shown in Fig. 5 to Figure 11, it is with the difference of embodiment 1, the gasket 111 is covered towards the decompression
The side of 103 sealed ends is equipped with annular groove, and the sealed end of decompression lid 103 is embedded in the annular groove.
The decompression lid 103 uses metal material, and the madial wall of decompression lid 103 is equipped with the first composite wear-resistant layer 1031.
Skeleton 1042 is provided with the accessory impeller 104,1042 surface of skeleton is covered with the second composite wear-resistant layer
1041。
Metallic framework 105 is processed using one piece of carbon steel sheet or stainless steel plate, is machined with some perforative passages 1053 thereon；
It is C-shaped to depressurize 111 section of Cover Gasket, i.e., gasket 111 is provided with a circular groove structure 1111, and the end of decompression lid 103 is set
Put in the circular groove structure 1111；The inner wall of decompression lid 103 is provided with the first composite wear-resistant layer 1031, and accessory impeller 104 is set
The skeleton 1042 of corrosion resisting steel material is equipped with, the second composite wear-resistant layer 1041 is provided with the surface of skeleton 1042, therefore depressurize
Lid 103 and accessory impeller 104 have good wear-resisting and corrosion resistant performance.The present embodiment can be applied wear-resisting and corrosion resistant requirement at the same time
Operating mode.
For the actual effect of the verification present invention, we pump position at two and have carried out Comparison study experiment, and wherein station 1 is certain
The Tailings transportation station in ore dressing plant, former to be manufactured with pump using prior art, it is about 0.3Mpa that water pressure is sealed in use, rear interior lining
The material of metallic framework is high-chromium alloy, and station 2 is certain hydrometallurgy factory zinc leaching residue conveying, and medium has strong acidity (sulfur-bearing
Acid), pH value is about 2, before the technology application of the present invention, due to worrying that corrosivity is too strong, is not attempt to apply complex abrasion-proof
The pump of material, pumps using corrosion resistant plastic, and since the wearability of plastics is poor, the average life span of pump is very short, and about 540 is small
When.
For station 1, the abrasion-proof corrosion-proof pump that we employ technology described in embodiment 1 is replaced, and makes rear liner
Average life span from 680 it is small when or so improve to 3820 it is small when or so.
For station 2, the abrasion-proof corrosion-proof pump that we employ technology described in embodiment 2 is replaced, the average longevity of pump
Life from 540 it is small when or so improve to 4860 it is small when or so.
Above in association with most preferred embodiment, invention has been described, but the invention is not limited in implementation disclosed above
Example, and the modifications that essence carries out various according to the present invention, equivalent combinations should be covered.
Claims (10)
1. a kind of abrasion-proof corrosion-proof pump, including impeller (110), main shaft (102) and the preceding pump housing mutually fastened and the rear pump housing, the preceding pump housing
Including suction inlet, front casing (109) and preceding liner (108), the rear pump housing includes rear casing (106) and rear liner (107), rear liner
(107) outside is equipped with accessory impeller (104) and decompression lid (103), and the sealed end of decompression lid (103) is equipped with cyclic sealing gasket
(111) and towards rear liner (107), rear liner (107) is equipped with metallic framework (105), and metallic framework (105) includes direction and subtracts
The exposed portion (1054) of gland (103), it is characterised in that rear liner (107) includes the sealing surface towards decompression lid (103)
(1071), sealing surface (1071) is collectively forming the cavity for accommodating accessory impeller (104) with the decompression lid (103) fastened on it, cruelly
Dew portion (1054) is located at sealing surface (1071) periphery, and the outer profile size of sealing surface (1071) is greater than or equal to gasket (111)
Internal periphery size.
2. a kind of abrasion-proof corrosion-proof pump according to claim 1, it is characterised in that the sealing surface (1071) is ring-shaped flat
Face.
3. a kind of abrasion-proof corrosion-proof pump according to claim 1 or 2, it is characterised in that the exposed portion (1054) is equipped with
The datum plane (1051) perpendicular with the main shaft (102), the datum plane (1051) be located at sealing surface (1071) periphery, two
Person is adjacently positioned and in the same plane.
4. a kind of abrasion-proof corrosion-proof pump according to claim 1, it is characterised in that the metallic framework (105) is included by institute
The disappearance portion (1052) of rear liner (107) cladding is stated, the disappearance portion (1052) is from the Internal periphery side of the exposed portion (1054)
Edge extends to the middle part of metallic framework (105).
A kind of 5. abrasion-proof corrosion-proof pump according to claim 4, it is characterised in that the disappearance portion (1052) be with it is described close
The parallel cyclic structure of front cover (1071), is provided with multiple passages (1053) on disappearance portion (1052), the passage (1053)
Extending direction and sealing surface (1071) are perpendicular.
6. a kind of abrasion-proof corrosion-proof pump according to claim 1, it is characterised in that the gasket (111) is section in circle
The O-ring of shape.
7. a kind of abrasion-proof corrosion-proof pump according to claim 1, it is characterised in that the gasket (111) subtracts described in
The side of gland (103) sealed end is equipped with annular groove, and the sealed end of decompression lid (103) is embedded in the annular groove.
8. a kind of abrasion-proof corrosion-proof pump according to claim 1, it is characterised in that the decompression lid (103) uses metal material
Matter, the madial wall of decompression lid (103) are equipped with the first composite wear-resistant layer (1031).
9. a kind of abrasion-proof corrosion-proof pump according to claim 1, it is characterised in that be provided with bone on the accessory impeller (104)
Frame (1042), skeleton (1042) surface is covered with the second composite wear-resistant layer (1041).
10. a kind of abrasion-proof corrosion-proof pump according to claim 1, it is characterised in that the preceding liner (108) and rear liner
(107) composite abrasion resistance material is included, the component of the composite abrasion resistance material includes wear-resisting that weight ratio is 50%-95%
Grain, the component of abrasion resistant particles include carborundum, corundum, silicon nitride, garnet, one kind of zirconium oxide or its combination, abrasion resistant particles
Component further include weight ratio be 5-40% resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711390735.XA CN107956703B (en) | 2017-12-21 | 2017-12-21 | Wear-resisting corrosion-resisting pump |
Applications Claiming Priority (1)
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| CN108869398A (en) * | 2018-07-24 | 2018-11-23 | 广州市拓道新材料科技有限公司 | A kind of wear-resisting pump housing and preparation method thereof |
| CN110230602A (en) * | 2019-07-16 | 2019-09-13 | 沈阳九和流体科技有限公司 | A kind of silicon carbide Pulp pump |
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| CN110230602A (en) * | 2019-07-16 | 2019-09-13 | 沈阳九和流体科技有限公司 | A kind of silicon carbide Pulp pump |
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| CN107956703B (en) | 2024-03-19 |
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