CN102927032A - Centrifugal pump with silicon carbide ceramics lining - Google Patents
Centrifugal pump with silicon carbide ceramics lining Download PDFInfo
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- CN102927032A CN102927032A CN2012104641142A CN201210464114A CN102927032A CN 102927032 A CN102927032 A CN 102927032A CN 2012104641142 A CN2012104641142 A CN 2012104641142A CN 201210464114 A CN201210464114 A CN 201210464114A CN 102927032 A CN102927032 A CN 102927032A
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- silicon carbide
- carbide ceramics
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- centrifugal pump
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Abstract
The invention provides a centrifugal pump with silicon carbide ceramics lining. The centrifugal pump comprises a pump body, wherein an inlet pipe and an outlet pipe are arranged on the pump body. The centrifugal pump is characterized in that the pump body is composed of a housing, and a combined type silicon carbide ceramics lining liquid chamber in the housing; a silicon carbide ceramics impeller is arranged in the silicon carbide ceramics lining liquid chamber; a silicon carbide ceramics cap is arranged on the impeller; the inlet pipe and the outlet pipe are communicated into the liquid chamber; and silicon carbide ceramics lining pipes are arranged in the inlet pipe and the outlet pipe. The invention provides a liquid chamber manufacture scheme of the silicon carbide ceramics, the technological difficulty of the large-dimension silicon carbide ceramics linings is broken; the whole liquid chamber is high in wear resistance and corrosion resistance, long in service life, good in sealing effect, firm and reliable in connection between the liquid chamber and a housing, and low in manufacture cost.
Description
Technical field
The present invention relates to a kind of centrifugal pump, particularly a kind of overcurrent chamber is the centrifugal pump for delivery of slip wear-resisting, the corrosion-resistant carbofrax material.
Background technique
Shurry pump is a kind of equipment for liquid transportation, take centrifugal pump as example, mainly comprises the pump housing, main shaft, bearing support, impeller etc., and impeller is arranged in the fluid chamber of pump body, relies on the rotation of main shaft impeller to produce centrifugal force work.Establish inlet tube and outer pipe on the pump housing, as the in-out end of fluid.Because the applicable operating mode of shurry pump is more abominable, as be used for transport acid, alkali lye or slip, the various sewage of all kinds of corruption ore pulps of metallurgy industry, environmental protection industry (epi).So, not only need good sealing for shurry pump, especially require to have very strong wear-resisting and corrosion resistance.
Consider that the material of flow passage components wants wear resistant corrosion resistant, so existing centrifugal pump for slip, its pump housing and impeller all adopt as far as possible has the material of high-wear resistance, such as using ultra-high molecular weight polyethylene (UHMWPE, abbreviation UHPE) engineering plastics, although this project plastics have good wear-resisting property and corrosion resistant performance, but because the restriction of the service condition of UHPE, the centrifugal pump operating temperature of this type is the highest can only to reach 80 ℃, even the UHPE by modification, its serviceability temperature also can only reach 90 ℃ at present, and serviceability temperature has become the bottleneck of UHPE engineering plastics shurry pump development.
On the other hand, silicon carbide (SiC) stupalith is a kind of material of high hardness, has also explored in the prior art this material is applied in the shurry pump.Such as Chinese patent publication CN102261335A, " a kind of high-ductility high-strength polyether ceramic-base combined pump technological method " discloses the scheme of hot pressing silicon carbide ceramics class material on a kind of flow passage components, to improve wear resistance and the anticorrosive property of flow passage components.This method is a kind of scheme of composite material, and just the top layer has carbofrax material, the manufacturing process trouble, and cost is high, sealing is poor, and, running into larger-size situation, the hot pressing difficult processing is with realization, and the feasibility of whole technological scheme is not high.
Also have, because the extreme hardness of thyrite, moulding is processed later on and difficulty, and cost is very high, so its precision is difficult to guarantee sealing requirements that can't be higher to its proposition; And carbofrax material is more crisp, connects and fixedly is a technology barrier, so be subject to the size restrictions that sintering is processed, centrifugal pump that can't be machining large-sized.
Summary of the invention
The objective of the invention is to invent a kind of make simple, performance centrifugal pump outstanding, that have Combined detachable silicon carbide ceramics liner.
For reaching the foregoing invention purpose, take following technological means:
A kind of centrifugal pump of silicon carbide ceramics liner, contain the pump housing, have inlet tube and outer pipe on the pump housing, it is characterized in that: the pump housing is by housing (housing and nonmetal a kind of selection, can all-plastic etc. other materials) and the combined type silicon carbide ceramics liner fluid chamber of enclosure interior consist of, the impeller of silicon carbide ceramics is set in the silicon carbide ceramics liner fluid chamber, and also cap inlet tube and outer pipe that described impeller is provided with silicon carbide ceramics are communicated in the fluid chamber, and the silicon carbide ceramics bushing pipe is all arranged in the pipe.
It is fixing that described housing is arranged on the outer sealing of silicon carbide ceramics liner fluid chamber.
Consider and make convenience and feasibility, the preferred pump housing specifically comprises silicon carbide ceramics inlet tube lining, silicon carbide ceramics protecgulum lining, circumference shell liner, silicon carbide ceramics bonnet lining, outer pipe pipe lining, suction flange, front platen, front gland, circumference shell, rear pressing cover and joint chair dish;
Described silicon carbide ceramics inlet tube lining, silicon carbide ceramics protecgulum lining, circumference shell liner, silicon carbide ceramics bonnet lining, outer pipe pipe lining splice and combine into combined type silicon carbide ceramics fluid chamber;
Described suction flange, front platen, front gland, circumference shell, rear pressing cover and joint chair dish are combined into housing.
In particular, the composite structure of housing and liner fluid chamber is: circumference shell liner is arranged in the circumference shell, the both sides of circumference shell liner arrange respectively protecgulum lining and bonnet lining, synthetic cavity, and rear pressing cover was spacing with being fixedly connected with of circumference shell in the past respectively for the front and rear covers lining; The inlet tube lining connects the opening of protecgulum lining, fixes with suction flange; Outer pipe lining is connected the opening connection with circumference shell liner side; The joint chair dish is connected on the rear pressing cover.
The whole overcurrent part of the present invention comprises that fluid chamber, impeller and cap, inlet/outlet pipe all adopt thyrite, and intensity is high, and is wear-resisting, corrosion-resistant, working life be rolled products of ordinary high-strength engineering plastics material 5-10 doubly even higher.And; emphasis of the present invention has solved protection, sealing and the fixing problem of thyrite; fluid chamber of the present invention is very low to seal request; can realize becoming complete fluid chamber with a plurality of thyrite liner component combinations, and the periphery fixes with the housing constituent elements and realize sealing.Broken through the integrated manufacturing mode of traditional housing and fluid chamber, though parts are many, the monomer manufacturing is simple, cost decrease on the contrary, and can process the centrifugal pump of larger sized silicon carbide ceramics liner.
Description of drawings
Fig. 1, profile profile of the present invention.
Fig. 2, structure Section View of the present invention.
Fig. 3, of the present invention and cap and impeller are connected to the structural drawing on the main shaft.
Among the figure, 1---silicon carbide ceramics inlet tube lining, 2---silicon carbide ceramics protecgulum lining, 3---circumference shell liner, 4---silicon carbide ceramics bonnet lining, 5---outer pipe pipe lining, 6---suction flange, 7---front platen, 8---front gland, 9---the circumference shell, 10---rear pressing cover, 11---the joint chair dish, 12---impeller, 13---and cap, 14---seal arrangement, 15---main shaft, 16---bearing support, 17---metal connecting piece, 18---the pump housing, 19---inlet tube, 20---outer pipe.
Embodiment
Such as the outline drawing of Fig. 1, have inlet tube 19 and outer pipe 20 on the pump housing 18, fluid (fluid that comprises the contour wear intensity of slip of institute of the present invention particularly suitable) is exactly from turnover here.In conjunction with Fig. 2 as can be known, centrifugal pump of the present invention has bearing support 16 and main shaft 15 equally, and what are connected connection with bearing support is the joint chair dish 11 of the pump housing 18, and inlet arranges suction flange 6.Main shaft 15 penetrates the pump housing 18 inside, connects silicon carbide ceramics impeller 12 on the main shaft, and vane rotary produces centrifugal force, drives Fluid Flow in A.
According to the embodiment of Fig. 2, the pump housing 18 is made of housing and fluid chamber two-part.Housing uses the material have higher-strength, to be easy to process to make, generally adopt more be ductile cast iron material, can gold machining, perforation, tapping etc., convenient fixing and be connected, can certainly be the nonmetallic material manufacturings such as engineering plastics.In the present embodiment, for installing and combined and instant, profile according to the pump housing, housing is combined by suction flange 6, front platen 7, front gland 8, circumference shell 9, rear pressing cover 10 and joint chair dish 11, inlet tube 19 is arranged on the suction flange 6, be communicated in the circumference shell 9, outer pipe 20 is set on the circumference shell 9 simultaneously, forward and backward gland all is annular, be combined in circumference shell both sides, suction flange 6 and joint chair dish 11 have been closed respectively in the gland outside in front and back, and these parts connect with bolt, and require to be tightly connected, consist of the pump housing shell of a sealing.
Seal approach has: circumference shell 9 and front and back gland 8,10 joint arrange seal ring, and the joint of gland and suction flange 6 or joint chair dish 11 arranges seal ring.
For improving wear-resisting, the Corrosion Protection of pump, in aforesaid housing, the fluid chamber of thyrite is set.Be difficult to machining large-sized technical problem for solving thyrite, take the liner fluid chamber of split-mounting type.In the present embodiment, fluid chamber splices and combines into complete silicon carbide ceramics fluid chamber by silicon carbide ceramics inlet tube lining 1, silicon carbide ceramics protecgulum lining 2, circumference shell liner 3, silicon carbide ceramics bonnet lining 4, outer pipe pipe lining 5 these five parts.
As described in summary of the invention, among the present invention, the silicon carbide ceramics fluid chamber does not have seal request, for the realization of assembling combination provides may.The distribution of the assembly unit parts of the present embodiment is a kind of selection scheme, and when requiring larger sized fluid chamber, cutting apart of refinement more is such as the circumference shell that is combined into a ring by a plurality of arc parts.Like this, the present invention can be applied to the centrifugal pump of large-sized thyrite liner, has broken through technical bottleneck.
Fluid chamber is to be arranged in enclosure interior, relies on housing to be fixed.The sealing of housing and fixing can guarantee the sealing of whole pump and fixedly requirement.According to the present embodiment, concrete housing and the linkage structure of fluid chamber are: circumference shell liner 3 is arranged in the circumference shell 9, the both sides of circumference shell liner 3 arrange respectively protecgulum lining 2 and bonnet lining 4, synthetic cavity, front and rear covers lining respectively before rear pressing cover 8,10 spacing with being fixedly connected with of circumference shell 9; Inlet tube lining 1 connects the opening of protecgulum lining 2, and is fixing with suction flange 6; Outer pipe lining 5 is connected 3 with circumference shell liner) opening of side connects; Joint chair dish 11 is connected on the rear pressing cover 10.This preferred linkage structure has considered manufacturing and easy to assembly, has also guaranteed the reliable fixing and whole inner sealing of housing convection current body cavity simultaneously.
For further improving sealing effect, be equipped with seal ring between front gland 8 and the protecgulum lining 2 and between rear pressing cover 10 and the bonnet lining 4.Have again, in the contact segment of housing and silicon carbide ceramic components, for reducing wear and impacting, between front platen 7 and protecgulum lining 2, and between joint chair dish 11 and the bonnet lining 4, buffering spacer is set.
Silicon carbide ceramics impeller 12 of the present invention, center have the also cap 13 of silicon carbide ceramics, guarantee that like this all flow passage components all are thyrites.Such as Fig. 3, also cap 13 the insides of described silicon carbide ceramics are embedded with metal connecting piece 17, use metal nuts here, are fixedly connected with main shaft 15 by metal nuts.Simultaneously, be provided with seal arrangement 14 between the also cap 13 of silicon carbide ceramics and the impeller 12, guarantee that fluid can not touch main shaft.
Use technological scheme of the present invention, it is a complete skill scheme that adopts thyrite to make centrifugal pump, significantly improve (being higher than stainless steel pump far away, is 5 ~ 10 times of more advanced high-strength engineering plastic pump even higher) working life of this pump.
Because the present invention is discrete with the fluid chamber of housing profile and inside, fluid chamber for thyrite, do not seal and be fixedly connected with requirement, machining accuracy can decrease (in fact, this material can't be realized sealing and the attachment hole connection is set), and can realize the large scale cavity with compound mode.The fluid chamber parts of the silicon carbide ceramics of single high strength, high abrasion, high anticorrosive property (SiC content is greater than 97%) can use the sintering process manufacturing, structure shape is simple, low cost of manufacture, can make larger sized fluid chamber as long as increase combiner quantity, break through the technical bottleneck of existing thyrite in centrifugal pump is made.
For housing, no longer wear-resisting and corrosion protection there are requirements at the higher level, as long as keep the workability of the excellence of housing, the means of taking simultaneously concrete multicompartment to connect, the fluid chamber of thyrite is carried out comprehensive spacing, solved the fixation problem of silicon carbide ceramics liner fluid chamber.And housing can also play the purpose of the inner silicon carbide ceramics liner fluid chamber of protection, prevents explosion, improves resistance to pressure.
Claims (10)
1. the centrifugal pump of a silicon carbide ceramics liner, contain the pump housing (1), have inlet tube (2) and outer pipe (3) on the pump housing, it is characterized in that: the pump housing (1) is made of the combined type silicon carbide ceramics liner fluid chamber of housing and enclosure interior, the impeller (6) of silicon carbide ceramics is set in the silicon carbide ceramics liner fluid chamber, described impeller is provided with the also cap (15) of silicon carbide ceramics, and inlet tube and outer pipe are communicated in the fluid chamber, and silicon carbide ceramics bushing pipe (13,14) is all arranged in the pipe.
2. the centrifugal pump of a kind of silicon carbide ceramics liner according to claim 1 is characterized in that: it is fixing that described housing is arranged on the outer sealing of combined type silicon carbide ceramics liner fluid chamber.
3. the centrifugal pump of a kind of silicon carbide ceramics liner according to claim 1, it is characterized in that: the described pump housing specifically comprises silicon carbide ceramics inlet tube lining (1), silicon carbide ceramics protecgulum lining (2), circumference shell liner (3), silicon carbide ceramics bonnet lining (4), outer pipe pipe lining (5), suction flange (6), front platen (7), front gland (8), circumference shell (9), rear pressing cover (10) and joint chair dish (11);
Described silicon carbide ceramics inlet tube lining (1), silicon carbide ceramics protecgulum lining (2), circumference shell liner (3), silicon carbide ceramics bonnet lining (4), outer pipe pipe lining (5) splice and combine into combined type silicon carbide ceramics liner fluid chamber;
Described suction flange (6), front platen (7), front gland (8), circumference shell (9), rear pressing cover (10) and joint chair dish (11) are combined into housing.
4. the centrifugal pump of a kind of silicon carbide ceramics liner according to claim 3, it is characterized in that: circumference shell liner (3) is arranged in the circumference shell (9), the both sides of circumference shell liner (3) arrange respectively protecgulum lining (2) and bonnet lining (4), synthetic cavity, rear pressing cover (8,10) was spacing with being fixedly connected with of circumference shell (9) in the past respectively for the front and rear covers lining; Inlet tube lining (1) connects the opening of protecgulum lining (2), and is fixing with suction flange (6); Outer pipe lining (5) is connected 3 with circumference shell liner) the opening connection of side; Joint chair dish (11) is connected on the rear pressing cover (10).
5. the centrifugal pump of a kind of silicon carbide ceramics liner according to claim 1 and 2, it is characterized in that: the connection between the connection of the housing constituent elements of the pump housing and housing and the combined type silicon carbide ceramics liner fluid chamber is to be tightly connected.
6. it is characterized in that according to claim 3 or the centrifugal pump of 4 described a kind of silicon carbide ceramics liners: between front gland (8) and the protecgulum lining (2) and rear pressing cover (10) and bonnet serve as a contrast between (4) and be equipped with seal ring; The joint of circumference shell (9) and front and back gland (8,10) is provided with seal ring.
7. the centrifugal pump of a kind of silicon carbide ceramics liner according to claim 1 is characterized in that: be provided with seal arrangement (14) between the also cap (13) of described silicon carbide ceramics and the impeller (12).
8. it is characterized in that according to claim 1 or the centrifugal pump of 7 described a kind of silicon carbide ceramics liners: described silicon carbide ceramics and cap (13) be embedded with the metal connecting piece (15) that is connected with main shaft.
9. it is characterized in that according to claim 3 or the centrifugal pump of 4 described a kind of silicon carbide ceramics liners: be provided with chip shield between protecgulum lining (2) and the front platen (7).
10. it is characterized in that according to claim 3 or the centrifugal pump of 4 described a kind of silicon carbide ceramics liners: be provided with chip shield between bonnet lining (2) and the joint chair dish (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104641142A CN102927032A (en) | 2012-11-19 | 2012-11-19 | Centrifugal pump with silicon carbide ceramics lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104641142A CN102927032A (en) | 2012-11-19 | 2012-11-19 | Centrifugal pump with silicon carbide ceramics lining |
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| Publication Number | Publication Date |
|---|---|
| CN102927032A true CN102927032A (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104641142A Pending CN102927032A (en) | 2012-11-19 | 2012-11-19 | Centrifugal pump with silicon carbide ceramics lining |
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| Country | Link |
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| CN (1) | CN102927032A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982442A (en) * | 2014-05-22 | 2014-08-13 | 沈阳第一水泵有限责任公司 | Silicon carbide ceramic lined desulphurization pump |
| CN106050724B (en) * | 2016-07-27 | 2019-05-03 | 湖北托马斯流体技术有限公司 | A kind of desulfurization pump of lining resin silicon carbide |
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| US3149574A (en) * | 1961-09-28 | 1964-09-22 | Lawrence Pumps Inc | Ceramic lined pump |
| CN2390035Y (en) * | 1999-09-07 | 2000-08-02 | 苏明 | Wear- and corrosion-resistant ceramic pump |
| CN2568858Y (en) * | 2002-09-05 | 2003-08-27 | 罗波 | Antiwear centrifugal water pump |
| CN2573738Y (en) * | 2002-09-20 | 2003-09-17 | 宜兴市宙斯泵业有限公司 | Improved corrosion-and wear-resistant centrifugal pump |
| CN202468416U (en) * | 2011-12-11 | 2012-10-03 | 白银鸿浩化工机械制造有限公司 | Corrosion and wear resistant pump |
| CN202914361U (en) * | 2012-11-19 | 2013-05-01 | 宜兴市灵谷塑料设备有限公司 | Centrifugal pump of silicon carbide ceramic lining |
-
2012
- 2012-11-19 CN CN2012104641142A patent/CN102927032A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3149574A (en) * | 1961-09-28 | 1964-09-22 | Lawrence Pumps Inc | Ceramic lined pump |
| CN2390035Y (en) * | 1999-09-07 | 2000-08-02 | 苏明 | Wear- and corrosion-resistant ceramic pump |
| CN2568858Y (en) * | 2002-09-05 | 2003-08-27 | 罗波 | Antiwear centrifugal water pump |
| CN2573738Y (en) * | 2002-09-20 | 2003-09-17 | 宜兴市宙斯泵业有限公司 | Improved corrosion-and wear-resistant centrifugal pump |
| CN202468416U (en) * | 2011-12-11 | 2012-10-03 | 白银鸿浩化工机械制造有限公司 | Corrosion and wear resistant pump |
| CN202914361U (en) * | 2012-11-19 | 2013-05-01 | 宜兴市灵谷塑料设备有限公司 | Centrifugal pump of silicon carbide ceramic lining |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982442A (en) * | 2014-05-22 | 2014-08-13 | 沈阳第一水泵有限责任公司 | Silicon carbide ceramic lined desulphurization pump |
| CN103982442B (en) * | 2014-05-22 | 2016-05-25 | 沈阳第一水泵有限责任公司 | A kind of desulfur pump of inner lining with silicon carbide pottery |
| CN106050724B (en) * | 2016-07-27 | 2019-05-03 | 湖北托马斯流体技术有限公司 | A kind of desulfurization pump of lining resin silicon carbide |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Bosheng Inventor after: Gao Mengping Inventor before: Chen Baisheng Inventor before: Gao Mengping |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: CHEN BAISHENG GAO MENGPING TO: CHEN BOSHENG GAO MENGPING |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130213 |