CN105201861A - Novel multi-stage centrifugal pump device and manufacturing method - Google Patents
Novel multi-stage centrifugal pump device and manufacturing method Download PDFInfo
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- CN105201861A CN105201861A CN201510399413.6A CN201510399413A CN105201861A CN 105201861 A CN105201861 A CN 105201861A CN 201510399413 A CN201510399413 A CN 201510399413A CN 105201861 A CN105201861 A CN 105201861A
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- centrifugal pump
- pump device
- stuffing box
- stage centrifugal
- stainless steel
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Abstract
The invention discloses a novel multi-stage centrifugal pump device which mainly comprises a shaft box, a water inlet section, a water outlet section, a middle section, a stuffing box and a perforated rod. A perforated seat used for fixing the perforated rod and a base are not arranged on the water inlet section and the water outlet section, the perforated seat is arranged on the shaft box or the perforated rod is fixedly welded to the water inlet section and the water outlet section, a main body of the stuffing box is segmented from a cooling device, and therefore the surface smooth finish is high. The invention further discloses a manufacturing method of the novel multi-stage centrifugal pump device, and parts which do not make contact with corrosive media are made of cast iron materials instead of stainless steel materials. The novel multi-stage centrifugal pump device mainly aims at a multi-stage centrifugal pump made of the stainless steel materials, and on the basis of achieving the same effects, the novel multi-stage centrifugal pump device and the manufacturing method have the advantages of precisely manufacturing, saving the cost, improving the efficiency and reducing energy and resources.
Description
Technical field
The present invention relates to multistage centrifugal pump technical field, particularly relate to a kind of energy-conservation upgrading consumption reducing device and manufacture method of the multistage centrifugal pump for stainless steel.
Background technique
No matter the multistage centrifugal pump produced on the market at present adopts cast iron, cast steel, which kind of material such as casting stainless steel is all adopt same set of drawing making die casting to form, cast iron comparatively speaking, cast steel continues to use old production casting does not also have great improvement (mainly saving material composition aspect) meaning, but for high price material (as stainless steel 304 material etc.), the current centrifugal pump on the market in space that is just significantly improved in saving cost of material is all use same set of drawing to use the casting of same material to form, because contact corrosion medium wanted by a lot of centrifugal pump, the working life of consideration equipment, a lot of stainless steel that adopts is as material now, causing thus does not much need the position contacted with Korrosionsmedium to also use stainless steel to cast, cause the significantly waste of manufacture cost.
On the other hand, cast owing to adopting same set of drawing, water inlet-outlet segment, stuffing box body due to original structure comparatively complicated, sand casting process can only be carried out, thus bring the casting defect of product more, product often needs soldering in course of working, and difficulty of processing is also larger, product is exerted pressure through suppressing, due to inevitable casting defect, as sand hole, pore, burning into sand etc., the success rate of final products is corresponding considerable influence, in addition the surface finishment of sand casting product is poor, runner degree of finish cannot be compared with precision casting, corresponding, product finally have impact on efficiency.Because pore sand hole is more, need the soldering time more, corresponding difficulty of processing strengthens, and work efficiency is lower in addition.
Therefore, design a kind of can the multistage centrifugal pump-unit of energy-conservation Resource regeneration and manufacture method for stainless steel, be the key technical problem needing at present to solve.
Summary of the invention
The object of the present invention is to provide a kind of for stainless steel, can the multistage centrifugal pump-unit of energy-conservation Resource regeneration, another object of the present invention is to the manufacture method that a kind of multistage centrifugal pump-unit is provided.
For achieving the above object, technological scheme provided by the invention is:
A kind of novel multistage centrifugal pump device, combined by inlet segment, water exit end, axle letter body, stage casing, stuffing box body, cooling unit, the perforated seat for fixing core pin and base is not comprised on described inlet segment and on described water exit end, described stuffing box body and described cooling unit individual cast, described perforated seat is arranged on described axle letter body or is welded on described inlet segment and described water exit end.
Preferably, described inlet segment, described water exit end, described stuffing box body, described stage casing use the precision casting of stainless steel 304 material, and described axle letter body, described cooling unit use cast iron quality casting.
The present invention also provides a kind of novel multistage centrifugal pump manufacture method, will not need the parts cutting contacted with Korrosionsmedium to come in device, uses cast iron quality to replace stainless steel 304 material material to cast.
Described inlet segment and the setting of water exit end, make the structure of inlet segment and water exit end simple, reduce the inferior rate of product, and the degree of finish of equipment surface is improved, improve working efficiency.
A technological scheme tool in technique scheme has the following advantages or beneficial effect: in prior art when Korrosionsmedium, all stainless steel material is adopted to pump entirety, cause increasing substantially of manufacture cost, do not changing the critical piece of multistage pump, comprise inlet segment, water exit end, the internal structure of stuffing box body is changed its external structure, first be perforated seat is set on the axle letter body at two ends, eliminate the perforated seat above water inlet-outlet segment of the prior art and base, improve working efficiency on the one hand, surface finishment, also improve the sealability of pump entirety simultaneously, secondly, by separated to stuffing box body main body and cooling unit, the yield rate of raising main body of being more convenient for, reduces inferior rate, when there is casting defect in main body, and easier soldering, thus increase work efficiency, again, inlet segment, water exit end, stage casing use stainless steel, and axle letter body uses cast iron quality, and described stuffing box body main body uses stainless steel, and the cooling unit on described stuffing box body uses cast iron quality.Need the stuffing box body main body contacted with Korrosionsmedium to use stainless steel, do not need the cooling unit contacted with Korrosionsmedium to use cast iron quality, reach cost-saving object.Changed by this, only have the cast iron materials of original material (as stainless steel 304) 1/10th to substitute the commutable material of high cost the relative price of axle letter body not needing to contact with Korrosionsmedium, cost-savingly reach 33%.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, simple introduction is done below by the accompanying drawing used required in embodiment or description of the prior art, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Accompanying drawing 1 is the inlet segment structural representation of the embodiment of the present invention;
Accompanying drawing 2 is the inlet segment P-P generalized section of the embodiment of the present invention;
Accompanying drawing 3 is the water exit end structural representation of the embodiment of the present invention;
Accompanying drawing 4 is the water exit end P-P generalized section of the embodiment of the present invention;
Accompanying drawing 5 is the stuffing box body structural representation of the embodiment of the present invention;
Accompanying drawing 6 is the generalized section of the stuffing box body of the embodiment of the present invention;
Accompanying drawing 7 is the inlet segment structural representation of prior art;
Accompanying drawing 8 is the inlet segment P-P generalized section of prior art;
Accompanying drawing 9 is the water exit end structural representation of prior art;
Accompanying drawing 10 is the water exit end P-P generalized section of prior art.
Accompanying drawing 11 is the stuffing box body structural representation of prior art;
Accompanying drawing 12 is the stuffing box body B-B generalized section of prior art.
Embodiment
Below by specific embodiment, the present invention is further illustrated.
By reference to the accompanying drawings, a kind of novel multistage centrifugal pump device, combined by inlet segment (accompanying drawing 1,2), water exit end (accompanying drawing 3,4), axle letter body, stage casing, stuffing box body (accompanying drawing 5,6), cooling unit, the perforated seat for fixing core pin and base is not comprised on inlet segment and on water exit end, stuffing box body and described cooling unit individual cast, inlet segment, water exit end, stuffing box body, stage casing use the precision casting of high price material, and axle letter body, cooling unit use the casting of low price material.
Accompanying drawing 7,8 is the inlet segment of prior art, compare with the inlet segment shown in the accompanying drawing 1,2 after improvement, accompanying drawing 9,10 is the water exit end of prior art, with improve after accompanying drawing 3,4 shown in water exit end compare because the inlet segment of prior art and water exit end surface comprise base and bar seat, cause carrying out precision manufactureing, and the casting defect that founding causes, as sand hole, pore etc. are more, thus easily cause and leak and need to do over again.Adopt the inlet segment in the present invention and water exit end, owing to not comprising base and perforated seat, therefore can memory precision manufactureing, device precision is better, and surface finishment is better, and avoid the defect such as sand hole and pore, yield rate is higher.
The stuffing box body of prior art is as shown in accompanying drawing 11,12, filler body and cooling unit are one, cast with same set of drawing, stuffing box body after improvement as shown in accompanying drawing 5,6, by stuffing box body and cooling unit separated, be more convenient for improving the yield rate of main body, reduce inferior rate, when there is casting defect in main body, easier soldering, thus increase work efficiency.
The described perforated seat for fixing core pin is arranged at described axle letter body, or described core pin is welded direct to inlet segment and water exit end surface.
Described low price material refers to cast iron quality.
Described high price material refers to stainless steel 304 material.
A kind of multistage centrifugal pump manufacture method, will not need the parts cutting contacted with Korrosionsmedium to come in device, use low price material to replace high price material to cast.
Low price material refers generally to cast iron quality, certainly yet comprises other low price materials.High price material generally refers to stainless steel 304 material because on the market stainless steel 304 use more.
The setting of inlet segment and water exit end, makes the structure of inlet segment and water exit end simple, reduces the inferior rate of product, and the degree of finish of equipment surface is improved, improve working efficiency.
The part do not needed with the medium contact that is corrosive is reduced, the part of reduction is transferred on two end axles letter body under the prerequisite of the former design effect of little change, by the material (5 times-6 times of stainless cost) of this part high cost, cylinder iron material substitution, thus reach the object of saving cost of material reduction spillage of material or adopt the shaping of more low price former wall steel pipe and steel plate to be welded direct to original parts of water inlet and outlet, just more can reach the object of saving cost of material.Such as, DF46-50 water inlet-outlet segment, original cost is a set of 304 material foundry goods of water inlet-outlet segment (mostly being molding sand casting at present), material weight is 158kg × 30 yuan/kg=4740 unit, adopt the scheme that I provides, a set of 60-65% only having original weight amount of DF46-50 water inlet-outlet segment precision casting part after improvement, i.e. 158 × 60%-158 × 65%=94.8kg-102.7kg, material price is 2844-3081 unit, and the cost of material of saving is 1659-1896 unit.Subtracting the material weight of getting off is 55.3-63.2kg.Adopt shaping steel pipe, steel plate, namely the cost of material is only 55.3-63.2kg × 3.7 yuan/kg=204.61-233.84 unit, add welding cost 100 yuan, namely cost is only 304-333 unit, cost is added up to be 3148-3414 unit, finally saving material is 1355-1563 unit, and cost savings rate reaches about 33%.
The water inlet-outlet segment do not improved by such one, stuffing box body due to original structure comparatively complicated, sand casting process can only be carried out, thus bring the casting defect of product more, product often needs soldering in course of working, and difficulty of processing is also larger, product is exerted pressure through suppressing, due to inevitable casting defect, as sand hole, pore, burning into sand etc., the success rate of final products is corresponding considerable influence, in addition the surface finishment of sand casting product is poor, runner degree of finish cannot be compared with precision casting, corresponding, product finally have impact on efficiency.Because pore sand hole is more, in addition need the soldering time more, corresponding difficulty of processing strengthens, work efficiency declines, and pass through improved products, owing to simplifying, eliminate the place of many corner angle that turn round, thus just carry out precision casting easily, thus eliminate product casting defect greatly, thus improve Product processing work efficiency, and significantly improve degree of finish inside and outside product due to precision casting, thus also improve the whole efficiency of product accordingly, rough calculation once, at least raise the efficiency as 2%-5%, the yield rate of product is also corresponding to be promoted greatly, process time reduces 40%.
Apply specific embodiment herein to set forth principle of the present invention and mode of execution, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.The above is only the preferred embodiment of the present invention, should be understood that, due to the finiteness of literal expression, and objectively there is unlimited concrete structure, for those skilled in the art, under the premise without departing from the principles of the invention, some improvement, retouching or change can also be made, also above-mentioned technical characteristics can be combined by rights; These improve retouching, change or combination, or the design of invention and technological scheme are directly applied to other occasion without improving, and all should be considered as protection scope of the present invention.
Claims (3)
1. a novel multistage centrifugal pump device, mainly comprise axle letter body, inlet segment, stage casing, water exit end, stuffing box body, cooling unit, core pin combine successively, it is characterized in that: the perforated seat for fixing described core pin is arranged on described axle letter body or described core pin is welded direct to described inlet segment and described water exit end, described stuffing box body and described cooling unit individual cast.
2. a kind of novel multistage centrifugal pump device according to claim 1, it is characterized in that: described inlet segment, described water exit end, described stuffing box body, described stage casing use the casting of stainless steel 304 material, described axle letter body, described cooling unit use cast iron quality casting.
3. a novel multistage centrifugal pump manufacture method, is characterized in that: will not need the parts cutting contacted with Korrosionsmedium to come in device, uses cast iron quality to replace stainless steel 304 material to cast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510399413.6A CN105201861A (en) | 2015-07-09 | 2015-07-09 | Novel multi-stage centrifugal pump device and manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510399413.6A CN105201861A (en) | 2015-07-09 | 2015-07-09 | Novel multi-stage centrifugal pump device and manufacturing method |
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| Publication Number | Publication Date |
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| CN105201861A true CN105201861A (en) | 2015-12-30 |
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| CN201510399413.6A Pending CN105201861A (en) | 2015-07-09 | 2015-07-09 | Novel multi-stage centrifugal pump device and manufacturing method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2554392Y (en) * | 2002-05-15 | 2003-06-04 | 汪作美 | Self-priming vertical multi-stage centrifugal pump |
| DE60116603T2 (en) * | 2000-02-11 | 2006-08-03 | Vertical S.P.A. | ROTARY PUMP |
| CN2842016Y (en) * | 2005-05-10 | 2006-11-29 | 上海凯泉泵业（集团）有限公司 | Medium-pressure horizontal multi-stage centrifugal pump |
| CN201144833Y (en) * | 2007-12-17 | 2008-11-05 | 张宝华 | Vacuum condensation pump |
| CN201661518U (en) * | 2010-02-03 | 2010-12-01 | 李正奇 | Water outlet section for multistage centrifugal pump |
| CN202560569U (en) * | 2012-05-21 | 2012-11-28 | 新昌德力石化设备有限公司 | Vertical stainless steel multistage centrifugal pump with split-type mechanical seal seat |
| CN204921384U (en) * | 2015-07-09 | 2015-12-30 | 长沙神舟水泵厂 | Novel multistage centrifugal pump device |
-
2015
- 2015-07-09 CN CN201510399413.6A patent/CN105201861A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE60116603T2 (en) * | 2000-02-11 | 2006-08-03 | Vertical S.P.A. | ROTARY PUMP |
| CN2554392Y (en) * | 2002-05-15 | 2003-06-04 | 汪作美 | Self-priming vertical multi-stage centrifugal pump |
| CN2842016Y (en) * | 2005-05-10 | 2006-11-29 | 上海凯泉泵业（集团）有限公司 | Medium-pressure horizontal multi-stage centrifugal pump |
| CN201144833Y (en) * | 2007-12-17 | 2008-11-05 | 张宝华 | Vacuum condensation pump |
| CN201661518U (en) * | 2010-02-03 | 2010-12-01 | 李正奇 | Water outlet section for multistage centrifugal pump |
| CN202560569U (en) * | 2012-05-21 | 2012-11-28 | 新昌德力石化设备有限公司 | Vertical stainless steel multistage centrifugal pump with split-type mechanical seal seat |
| CN204921384U (en) * | 2015-07-09 | 2015-12-30 | 长沙神舟水泵厂 | Novel multistage centrifugal pump device |
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Application publication date: 20151230 |
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