CN101303026B - Method for preparing graphitic centrifugal pump spiral casing - Google Patents
Method for preparing graphitic centrifugal pump spiral casing Download PDFInfo
- Publication number
- CN101303026B CN101303026B CN2008100315985A CN200810031598A CN101303026B CN 101303026 B CN101303026 B CN 101303026B CN 2008100315985 A CN2008100315985 A CN 2008100315985A CN 200810031598 A CN200810031598 A CN 200810031598A CN 101303026 B CN101303026 B CN 101303026B
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- plug screw
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- tapped hole
- pump shell
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Abstract
The invention discloses a manufacturing method of a centrifugal graphite pump shell. The manufacturing method of a pump shell body includes that a light hole A is cut at the position of a graphite pump shell blank, on which spiral channels are intended to be processed; the back of the blank, corresponding to the light hole A, is milled with screwed holes, the inner diameter of the screwed holes is larger than the maximum radius of the spiral channel; the spiral channel and an outlet of the spiral channel are processed by numerical control or common machining method; screw filling plugs matched with the screw holes are prepared for filling the screwed holes; a light hole B communicated with the light hole A is processed at the center of the screw filling plugs. The method solves the difficult problem that direct machining can not be adopted due to hidden channels in the existing centrifugal graphite pump, has the advantages of high efficiency, low energy consumption and low cost, and can realize job production and large-scale production of the centrifugal graphite pump shell.
Description
Technical field
The present invention relates to the preparation of centrifugal pump spiral casing.
Background technique
Spiral runner and one section coupled undercurrent road are arranged in the pump case of graphitic centrifugal pump shell, the undercurrent road with go out head piece and communicate.Owing in the pump case undercurrent road is arranged, cutter can't be put in the operation of undercurrent road with general machine-tooled method, so runner can not adopt machining directly to machine, therefore, present this pump case all is to adopt the method for " graphite paste producing-mold pressing-roasting-machining finishing " to be prepared.Big, high, the consuming time length of cost of this manufacture method power consumption has only when batch process in batches to realize.
Summary of the invention
The object of the invention is to solve present graphitic centrifugal pump shell and can not adopts the directly difficult problem of processing of machining because the undercurrent road is arranged, a kind of method that adopts split processing, combine and assemble to prepare the graphitic centrifugal pump shell is proposed, this method is efficient, low consumption, low cost, can realize the single-piece and the batch process of graphitic centrifugal pump shell.
The present invention is the pump case main body with the split of graphitic centrifugal pump shell and fills plug screw and form that concrete preparation method is: (1) preparation pump case main body: the position at graphite pump case blank desire processing spiral runner processes the A unthreaded hole; In the threading hole, the blank back side of A unthreaded hole correspondence, the tapped hole internal diameter is greater than the maximum radius of spiral runner; Use the head piece that of digital control processing or common machining method processing spiral runner and spiral runner; (2) preparation and the filling plug screw that tapped hole matches are filled the plug screw sealing and are filled into tapped hole; (3) the B unthreaded hole that communicates with the A unthreaded hole in the central position processing of filling plug screw.
For the ease of installing, fill plug screw and can have the installation handle, after the filling plug screw is filled in the tapped hole, remove the installation handle of filling plug screw again.
Compared with prior art, the present invention is divided into the pump case main body with the graphitic centrifugal pump shell and fills plug screw two-part split processing, owing to process tapped hole earlier in the position at spiral runner place, and the tapped hole internal diameter is greater than the maximum radius of spiral runner, so after hole processing is finished, the processing environment of spiral runner promptly becomes open type, therefore there is not undercurrent road structure, can adopt digital control processing or common machining method processing spiral runner like this, with filling plug screw tapped hole be sealed again afterwards.The method that this split processing, combine and assemble prepare the graphitic centrifugal pump shell has changed the method for conventional moulded-roasting, having solved pump case exists the undercurrent road can't be with a general mach difficult problem, have efficient low-consume, advantage cheaply, not only can realize the batch process of graphitic centrifugal pump shell, also be applicable to the single-piece preparation of graphitic centrifugal pump shell.
Description of drawings
Fig. 1 is the plan view of the graphitic centrifugal pump spiral casing of the inventive method preparation;
Fig. 2 is the rear view of the graphitic centrifugal pump spiral casing of the inventive method preparation;
Fig. 3 is the sectional view of Fig. 1 along the A-A line;
Fig. 4 is the sectional view of Fig. 1 along the B-B line;
Fig. 5 fills the plug screw structural drawing.
Embodiment
Below explanation concrete enforcement of the present invention:
1) select the high strength graphite material as graphite pump case blank, as Fig. 1～shown in Figure 4, process pump case main body 1 earlier, concrete grammar is:
A processes the A unthreaded hole 4 that diameter is φ 131mm in the central position of desire processing spiral runner;
It is that φ 240mm, the degree of depth are the tapped hole 6 of 30mm that B goes out internal diameter at the blank back side of A unthreaded hole 4 correspondences car; Because tapped hole 6 is greater than the maximum radius of spiral runner 3, after tapped hole 6 processing, the processing environment of spiral runner 3 is open type, does not have undercurrent road 9, therefore can use digital control processing and general machining to process spiral runner 3;
C processing internal diameter is that the spiral runner of φ 90mm goes out head piece 8.
For the ease of fixing pump case at work, can on pump case main body 1, reprocess a tapped hole 7 that is connected with the external bracing axle as link.
2) preparation and the filling plug screw 2 (as shown in Figure 5) that tapped hole 6 matches for the ease of installing, are filled plug screw 2 and are had installation handle 10; On filling plug screw 2 flank of thread, coat resistant to elevated temperatures glue, screw in the tapped hole 6 of pump case main body 1; Remove the installation handle 10 of filling plug screw 2.
3) process the B unthreaded hole 5 (φ 131mm) identical at the center of filling plug screw 2 with A unthreaded hole 4 diameters; B unthreaded hole 5 communicates with A unthreaded hole 4.
So far, finished the preparation of band undercurrent road spiral structure graphitic centrifugal pump spiral casing.
Claims (3)
1. the preparation method of a graphitic centrifugal pump shell is characterized in that may further comprise the steps:
(1) preparation pump case main body: the position at graphite pump case blank desire processing spiral runner processes the A unthreaded hole; In the threading hole, the blank back side of A unthreaded hole correspondence, the tapped hole internal diameter is greater than the maximum radius of spiral runner; Use the head piece that of digital control processing or common machining method processing spiral runner and spiral runner;
(2) preparation and the filling plug screw that tapped hole matches are filled the plug screw sealing and are filled into tapped hole;
(3) the B unthreaded hole that communicates with the A unthreaded hole in the central position processing of filling plug screw.
2. the method for claim 1, it is characterized in that: described filling plug screw has the installation handle, filling after plug screw is filled in the tapped hole, removes handle is installed.
3. method as claimed in claim 1 or 2 is characterized in that: go up tapped hole that is connected with the external bracing axle of processing in described pump case main body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100315985A CN101303026B (en) | 2008-06-27 | 2008-06-27 | Method for preparing graphitic centrifugal pump spiral casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100315985A CN101303026B (en) | 2008-06-27 | 2008-06-27 | Method for preparing graphitic centrifugal pump spiral casing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101303026A CN101303026A (en) | 2008-11-12 |
| CN101303026B true CN101303026B (en) | 2010-08-25 |
Family
ID=40113071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100315985A Expired - Fee Related CN101303026B (en) | 2008-06-27 | 2008-06-27 | Method for preparing graphitic centrifugal pump spiral casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101303026B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047168B (en) * | 2012-12-13 | 2015-08-12 | 福建瓮福蓝天氟化工有限公司 | A kind of manufacture method of fluorine-containing dilute sulphuric acid delivery pump |
| CN111843389B (en) * | 2020-07-24 | 2021-10-26 | 河南航天液压气动技术有限公司 | Centrifugal pump volute machining method |
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2008
- 2008-06-27 CN CN2008100315985A patent/CN101303026B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101303026A (en) | 2008-11-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100825 Termination date: 20130627 |