CN204921380U - Novel multistage centrifugal pump's middle section device - Google Patents
Novel multistage centrifugal pump's middle section device Download PDFInfo
- Publication number
- CN204921380U CN204921380U CN201520538129.8U CN201520538129U CN204921380U CN 204921380 U CN204921380 U CN 204921380U CN 201520538129 U CN201520538129 U CN 201520538129U CN 204921380 U CN204921380 U CN 204921380U
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- CN
- China
- Prior art keywords
- shaping
- shell
- enclosing cover
- centrifugal pump
- middle section
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a novel multistage centrifugal pump's middle section device, including two handles, shaping pachydermia pipe shell and stamped plate enclosing covers, pachydermia pipe shell and stamped plate enclosing cover pass through the interference fit welding, and welding parts contains a screens. Utility model adopts stamped plate and shaping pachydermia tube manufacture to form, and the shell adopts shaping pachydermia pipe to make the leakproofness of equipment better, be difficult for leaking, and equipment is lighter, and work efficiency is higher. Durability, the compressive property of on the other hand stamped plate are high than the cast iron material. Enclosing cover and shell all are the shaping materials, and precision is higher.
Description
Technical field
The utility model relates to a kind of multistage centrifugal pump, particularly relates to a kind of middle section apparatus of multistage centrifugal pump.
Background technique
In current society, Resource regeneration is energy-conservation is the large major subjects that China is engaged in production type enterprise, a lot of water pump adopts cast iron materials and does not adopt cast steel material at present, reason is to consider Cost Problems when designing this product at that time, the material of cast iron differs greatly compared with the cost of cast steel, so generally adopt cast iron materials.Nowadays, along with the progress of history, the progress of society, the cost of material of cast iron and cast steel was very nearly the same especially in recent years, particularly shaping price of steel product significantly declines, thus, faced with this situation, the broad space of a reform and change is provided to our production enterprise.
On the other hand, now, section apparatus adopts same set of drawing founding to make substantially, due to inevitable casting defect, as sand hole, pore, burning into sand etc., the success rate of final products is corresponding considerable influence, and the surface finishment of sand casting product is poor in addition, and 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 in addition, and work efficiency declines.
Therefore, designing section apparatus in a kind of multistage centrifugal pump improved for cast iron quality newly, is the key technical problem needing at present to solve.
Model utility content
The purpose of this utility model is to provide the middle section apparatus of a kind of Novel saving cost, precision is better, sealing is strong multistage centrifugal pump.
For achieving the above object, the technological scheme that the utility model provides is: a kind of middle section apparatus of novel multistage centrifugal pump, comprises two handles, shell and enclosing cover composition.
Preferably, described shell is shaping pachydermia pipe, and described enclosing cover is shaped steel plate, and described shell and described enclosing cover are welded by interference fit, and welding portion comprises a screens.
Preferably, the interference fit of described screens is of a size of 10-20mm.
Preferably, described shell and enclosing cover are stamped to form by shaping round steel forge die heats forged.
Stage casing shell and enclosing cover select shaped steel plate, and the relative sand-cast pig iron of cost saves about 30%, and precision is better, and the yield rate of shaped steel plate is higher, to ensure the working life of equipment.
Stage casing shell selects shaping pachydermia pipe, more effectively prevents equipment from leaking, and the overall cost of equipment saves about 30% compared with the cast iron stage casing of foundry casting.
Stage casing enclosing cover and shell are welded by interference fit, better tightness.
Stage casing enclosing cover and shell directly adopt shaping round steel to forge and are stamped to form, better tightness.
A technological scheme tool in technique scheme has the following advantages or beneficial effect: adopt same drawing to carry out cast iron, casting steel or stainless steel foundry casting in prior art, there are some casting defects unavoidably in inside, as sand hole, pore etc., cause equipment to leak, thus affect working efficiency.The utility model adopts shaped steel plate and shaping pachydermia pipe manufacturer to form, and shell adopts shaping pachydermia pipe to make the better tightness of equipment, antileaking, and equipment cost relative to cast iron and cast steel more economical, working efficiency is higher.On the other hand shaped steel plate serviceability, comparatively cast iron quality is high for compression resistance.Enclosing cover and shell are all shaping materials, and precision is higher.Therefore, the middle section apparatus longer service life after improvement, yield rate are high, and the working efficiency of equipment is higher, and save the cost of 27%.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment 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 embodiments more of the present utility model, 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 stage casing apparatus structure schematic diagram of the utility model embodiment;
Accompanying drawing 2 is the middle section apparatus B-B generalized section of the utility model embodiment.
Embodiment
Below by specific embodiment, the utility model is further described.
Accompanying drawing 1 is the plan view of middle section apparatus, and accompanying drawing 2 is B-B sectional drawings of middle section apparatus.As can be seen from Fig. 1 and Fig. 2, a kind of middle section apparatus of novel multistage centrifugal pump, comprise two handles 1, shaping pachydermia pipe shell 2 and shaped steel plate enclosing cover 3, pachydermia pipe shell 2 and shaped steel plate enclosing cover 3 are welded by interference fit, welding part comprises a screens 4, and the degree of depth of screens is 10-20mm.
Stage casing enclosing cover selects shaped steel plate, and cost and sand-cast pig iron save about 3%, but precision is better, and the yield rate of shaped steel plate is higher, to ensure the working life of equipment.Stage casing shell selects shaping pachydermia pipe, more effectively prevents equipment from leaking, and the overall cost of equipment reduces.Stage casing enclosing cover and shell are welded by interference fit, better tightness.
Another program is, stage casing enclosing cover and shell adopt shaping round steel, burns the material that red rear basis calculates, and ready made forge die forges and is stamped to form, this scheme better tightness.
Such as D46-50 multistage pump stage casing, with prevailing price on the market for reference, the cost of the middle section apparatus adopting iron casting to make is as follows: gross weight 13.5kg × 7=88 unit.After improvement, the cost of shaping pachydermia pipe about 24 yuan, steel plate cost about 30 yuan, adds welding cost 10 yuan, and overall cost is 64 yuan.Therefore, the cost of 27% is saved after improving.
A technological scheme tool in technique scheme has the following advantages or beneficial effect: adopt same drawing to carry out iron casting casting in prior art, there are some casting defects unavoidably in inside, as sand hole, pore etc., cause equipment to leak, thus affect working efficiency.The utility model adopts steel plate and pachydermia pipe manufacturer to form, and shell adopts shaping pachydermia pipe to make the better tightness of equipment, antileaking, and working efficiency is higher.Comparatively cast iron quality is high for the serviceability of another aspect shaped steel plate.Enclosing cover and shell are all shaping materials, and precision is higher.Therefore, the middle section apparatus longer service life after improvement, yield rate is high, cost is lower, and the working efficiency of equipment is higher.
Apply specific embodiment herein to set forth principle of the present utility model and mode of execution, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping.The above is only preferred implementation of the present utility model, 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 prerequisite not departing from the utility model principle, 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 model utility and technological scheme are directly applied to other occasion without improving, and all should be considered as protection domain of the present utility model.
Claims (3)
1. the middle section apparatus of a novel multistage centrifugal pump, it is characterized in that: comprise two handles (1), shell (2) and enclosing cover (3) composition, described shell (2) is shaping pachydermia pipe, described enclosing cover (3) is shaped steel plate, described shell (2) and described enclosing cover (3) are welded by interference fit, and welding portion comprises a screens (4).
2. according to section apparatus in a kind of novel multistage centrifugal pump in claim 1, it is characterized in that: the interference fit of described screens (4) is of a size of 10-20mm.
3. according to section apparatus in a kind of novel multistage centrifugal pump in claim 1, it is characterized in that: described shell (2) and enclosing cover (3) are forged by shaping round steel and be stamped to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520538129.8U CN204921380U (en) | 2015-07-23 | 2015-07-23 | Novel multistage centrifugal pump's middle section device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520538129.8U CN204921380U (en) | 2015-07-23 | 2015-07-23 | Novel multistage centrifugal pump's middle section device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204921380U true CN204921380U (en) | 2015-12-30 |
Family
ID=54970514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520538129.8U Expired - Fee Related CN204921380U (en) | 2015-07-23 | 2015-07-23 | Novel multistage centrifugal pump's middle section device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204921380U (en) |
-
2015
- 2015-07-23 CN CN201520538129.8U patent/CN204921380U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20200723 |