CN202203122U - Centrifugal pump - Google Patents
Centrifugal pump Download PDFInfo
- Publication number
- CN202203122U CN202203122U CN2011202823397U CN201120282339U CN202203122U CN 202203122 U CN202203122 U CN 202203122U CN 2011202823397 U CN2011202823397 U CN 2011202823397U CN 201120282339 U CN201120282339 U CN 201120282339U CN 202203122 U CN202203122 U CN 202203122U
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- runner
- inner housing
- centrifugal pump
- frame
- central shaft
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Abstract
The utility model provides a centrifugal pump, in particular to centrifugal pump that uses among the coalification equipment, it includes: a central shaft connected to the driving motor; a rotor part sleeved on the central shaft; the inner shell is sleeved on the central shaft and comprises a first inner shell and a second inner shell which are symmetrically arranged at two sides of the rotor component along the central shaft; the inner shell is arranged in the outer shell and fixedly connected with the outer shell. The feed side of shell body is provided with branching inlet channel and the discharge side is provided with ejection of compact runner, and branching inlet channel has the branching feed end that communicates with first transport runner in the first inner shell and the second transport runner in the second inner shell respectively, and first transport runner and second transport runner converge in ejection of compact runner. The utility model discloses a centrifugal pump is applicable to large-traffic or has the operating mode of very big inlet pressure to be applicable to and carry the sediment thick liquid or the high temperature medium that have abrasive performance, make the maintenance of the pump body change more portably simultaneously.
Description
Technical field
The utility model relates to centrifugal pump, the centrifugal pump that particularly uses in the coal chemical engineering equipment.
Background technique
In coal chemical technology, centrifugal type slurry pump can be used to carry the solid mixture that abrasion is more intense, contain the strong solid particle, like ore pulp, lime-ash, cement slurry, mortar, grit etc.Existing centrifugal type slurry pump allows impurity content usually between 3～5%, and usually relates to its solid content of coal slurry of being carried in the conveying, particularly coal liquefaction craft of coal slurry in the Coal Chemical Industry technology up to 40%wt, solid particle diameter＜20 micron.In course of conveying,, can cause the impeller in the centrifugal pump to bear very big load if quantity delivered is very big or inlet pressure when higher; And be difficult to effectively convection cell and control, cause the pump can't proper functioning, and the coal slurry solid content of being carried be high so that impeller bears uniform load; Impeller to high speed rotating washes away very severity, and after impeller wore and tore, the centrifugal pump of structure was difficult to repair and replacement usually; Simultaneously; Also dissolved part inflammable gas (like hydrogen, light component oil gas) in the high temperature coal slurry, this part contained gas in the coal slurry will become inflammable gas, the generation spontaneous combustion if leak in the atmosphere; Therefore, need guarantee that also centrifugal pump has good sealing.
The model utility content
A purpose of the utility model provides a kind of centrifugal pump, and it can solve above-mentioned existing technology problem at least one.
To above-mentioned purpose, according to the aspect of the utility model a kind of centrifugal pump is provided, it comprises: central shaft is connected in drive motor; Rotor part is set on the central shaft; Inner housing is set on the central shaft, comprises first inner housing and second inner housing that are arranged symmetrically in the rotor part both sides along central shaft; Frame, inner housing are arranged in the frame and with frame and are fixedly connected; Wherein, The feed side of frame is provided with bifurcated charging runner and exit side is provided with the discharging runner; Feed side and exit side are separately positioned on the both sides of central shaft; Bifurcated incoming flow road have respectively with first inner housing in first carry second in the runner and second inner housing to carry runner to be communicated with the bifurcated feed end, first carries the runner and the second conveying runner to meet at the discharging runner.
Particularly, according to the centrifugal pump of an aspect of the utility model, wherein, be provided with the fixed guide key between frame and the inner housing, and frame is equipped with pump cover along the two ends of central shaft, pump cover is enclosed in inside with frame with inner housing.
Particularly, according to the centrifugal pump of an aspect of the utility model, wherein, be provided with expansion loop between pump cover and the inner housing.
Particularly, according to the centrifugal pump of an aspect of the utility model, wherein, vertically hold for two of central shaft and be provided with cartridge seal, cartridge seal comprises the multi-stage mechanical sealing that is made up of Sealing and bearing.
Particularly, according to the centrifugal pump of an aspect of the utility model, wherein, frame comprises: cylindrical body, inner housing are arranged in the cylindrical body; Charging portion and discharging portion are separately positioned on feed side and are connected with exit side and with cylindrical body, and bifurcated charging runner is formed in the charging portion, and the discharging runner is formed in the discharging portion.
Particularly, according to the centrifugal pump of an aspect of the utility model, wherein, charging portion and discharging portion and cylindrical body form integratedly or independently.
Particularly; According to the centrifugal pump of an aspect of the utility model, wherein, frame also comprises: flange bend pipe and flange straight tube; All be arranged at the feed side of cylindrical body and be connected in cylindrical body; The flange bend pipe have with cylindrical body in the heat-conducting medium input channel that is communicated with of heat-conducting medium input channel, the flange straight tube have with cylindrical body in the heat-conducting medium output channel that is communicated with of heat-conducting medium output channel, and the flange bend pipe is arranged on the flange straight tube outside.
Particularly, according to the centrifugal pump of an aspect of the utility model, wherein, frame also comprises: the flanged tee pipe, and be arranged on the exit side of frame and be connected in cylindrical body, the flanged tee pipe is communicated with the discharging runner.
Particularly, according to the centrifugal pump of an aspect of the utility model, wherein, charging portion central authorities are formed with boss, and boss central authorities are formed with groove.
Particularly, according to the centrifugal pump of an aspect of the utility model, wherein, rotor part and inner housing are processed by nickel Hart alloy NCA-1.
The utlity model has following technique effect:
Centrifugal pump according to the utility model adopts the double hulled structure of double suction; Thereby be applicable to big flow or have the operating mode of very big inlet pressure; And be applicable to and carry slag slurry or high temperature media, also make the maintain and replace of the pump housing easier simultaneously with abrasion performance.
More technique effects will combine embodiment to describe hereinafter.
Should be appreciated that above generality is described and following detailed description is all enumerated and illustrative, purpose is in order to the utility model that requires to protect further explanation to be provided.
Description of drawings
Accompanying drawing constitutes the part of this specification, is used to help further understand the utility model.These accompanying drawing diagrams some embodiments of the utility model, and be used for explaining the principle of the utility model with specification.Identical in the accompanying drawings parts are represented with identical label.In the accompanying drawing:
The centrifugal pump that Fig. 1 a shows according to the utility model mode of execution totally assembles sectional arrangement drawing;
Fig. 1 b shows the side view of the centrifugal pump among Fig. 1 a; And
Fig. 2 shows the structural representation according to the pump housing part of the centrifugal pump of the utility model mode of execution.
Embodiment
At first the centrifugal pump of the utility model mode of execution and the basic comprising of pump housing part are described with reference to accompanying drawing.
At first, wherein show general assembly drawing according to the centrifugal pump of an embodiment of the utility model with reference to Fig. 1 a and Fig. 1 b.As shown in the figure; Centrifugal pump in this mode of execution is the two shell type centrifugal pumps of double suction, and its major part comprises: dust cover 1, central shaft 2, unit loading type machine envelope 3, pump cover 4, flange bend pipe 5, seal ring 6,9, expansion loop 7, flange straight tube 8, impeller (rotor part) 10, inner housing 11, frame 12, floating bushing 13, floating ring 14, spring 15, floating ring gland 16, cooling chamber cap 17 (shown in Fig. 1 b), interstage sleeve 18, Hough block 19, the pump housing 20, flanged tee pipe 21.
Then, wherein show structural representation according to the centrifugal pump body part of an embodiment of the utility model with reference to Fig. 1.As shown in Figure 2, the two shell type pump housings of the double suction of this mode of execution mainly are made up of following: frame 12, inner housing 11, fixed guide key 22, screw 23, expansion loop 7, pump cover 4, impeller (rotor part) 10.
Below, with continue with reference to accompanying drawing to the centrifugal pump of the utility model with and the concrete make of the pump housing be described in detail.
With reference to Fig. 2, wherein show pump housing part according to the centrifugal pump of a mode of execution, it comprises: central shaft 2, it is connected in the drive motor (not shown) to give the moving element (for example impeller 10) in the centrifugal pump with transmission of power; Impeller (rotor part) 10, it is set on the central shaft 2 and with central shaft 2 and rotates; Inner housing 11, it is set on the central shaft 2 equally, and according to the utility model, inner housing 11 comprises the first inner housing 11a and the second inner housing 11b that is arranged symmetrically in impeller 10 both sides along central shaft 2; Frame 12, inner housing 11 are arranged in this frame 12.More specifically, frame 12 has a bifurcated charging runner 12a and a discharging runner 12b who lays respectively at central shaft 2 both sides, and wherein, bifurcated charging runner 12a is positioned at the feed side of frame 12, and discharging runner 12b is positioned at the exit side of frame.And then; Bifurcated charging runner 12a have respectively with the first inner housing 11a in first carry second in the runner 11c and the second inner housing 11b to carry runner 11d to be communicated with bifurcated feed end 12c, 12d, first carries the runner 11c and the second conveying runner 11d then to meet at discharging runner 12b.
Centrifugal pump body structure according to above-mentioned the utility model; After flowing medium is inhaled into from the import of bifurcated charging runner 12a; Path along the bifurcated runner is divided into two-way, carries runner 11c and second to carry runner 11d to pass through from first of impeller 10 left and right sides respectively.Medium is divided into two-way after getting into pump cavity, stressedly when making impeller 10 actings evenly prolongs the working life of impeller 10, thereby it is very big or have an operating mode of very big inlet pressure to be highly suitable for rate-of flow.Then, under the effect of the rotational motion of impeller 10, it is one road discharging runner 12b output from frame 12 that material is converged by boosting subsequently, reaches the purpose of carrying high-pressure high-flow output thus.In addition, inner housing 11 is divided into two parts of bilateral symmetry two, and this makes when inner housing 11 keeps in repair after wearing and tearing, but about the part mutual noninterference, keep in repair respectively and change, and do not influence the outside pipe-line system of pump.
Further; Centrifugal pump according to the utility model; Wherein, Be provided with fixed guide key 22 (as shown in fig. 1) between frame 12 and the inner housing 11, this fixed guide key 22 is used for when inner housing 11 is installed to frame 12 fixedly the mounting point of inner housing 11 and confirms its installation direction, and can prevent after installing that inner housing 11 from following impeller 10 and rotating.Simultaneously, can fixed guide key 22 be fixed to inner housing 11 with screw 23.In addition, frame 12 is equipped with pump cover 1 along the two ends of central shaft 2, and pump cover 1 is enclosed in inside with frame 12 with inner housing 11, realizes the axial restraint of inner housings 11 through pump cover 4.
Preferably, between pump cover 1 and inner housing 11, be provided with expansion loop 7.In the course of the work; Because the bigger temperature difference of the inner and extraneous existence of the pump housing; Also have the temperature difference between inner housing 11 and the frame 12, thereby the heat distortion amount of the two is also just different, the heat distortion amount of inner housing 11 inside is greater than the heat distortion amount of frame 12; Then the existence of expansion loop 7 can compensate the difference of this heat distortion amount, thereby reduces thermal stress.
Further; In the centrifugal pump of this mode of execution; Also comprise the cartridge seal 3 that is arranged on central shaft 2 two ends; This cartridge seal comprises the multi-stage mechanical sealing that is made up of Sealing and bearing, and as shown in fig. 1, the cartridge seal 3 that wherein adopts comprises a plurality of sealing blocks and bearing and is arranged on the seal ring between them.Adopt this cartridge seal 3 can improve the overall sealing performance of centrifugal pump effectively.
Next, with reference to Fig. 2 to describing according to the centrifugal pump body structure of an embodiment of the utility model.In the mode of execution of Fig. 2, the frame 12 of pump body structure comprises: cylindrical body 12e, inner housing 11 are arranged among the cylindrical body 12e; Charging portion 12f and discharging portion 12g; Lay respectively at central shaft 2 both sides (promptly being separately positioned on the feed side and exit side of frame) and be connected with cylindrical body 12e; Wherein bifurcated charging runner 12a is formed in the charging portion 12f, and discharging runner 12b is formed in the discharging portion 12g.In mode of execution shown in Figure 2, charging portion 12f and discharging portion 12g and cylindrical body 12e form, and visible from Fig. 2, charging portion 12f and discharging portion 12g extend to form from cylindrical body 12e.Certainly, in other embodiments, charging portion 12f and discharging portion 12g and cylindrical body 12e form independently, and for example, the pump body structure shown in Fig. 1 has just adopted discharging portion (being configured to a flanged tee pipe 21) discretely.
Further, as shown in Figure 1, frame 12 comprises flange bend pipe 5 and flange straight tube 8, and it all is arranged on the feed side (promptly being arranged on homonymy with charging portion 12f) of frame 12 and is connected in cylindrical body 12e.Flange bend pipe 5 have with cylindrical body 12e in the heat-conducting medium input channel that is communicated with of heat-conducting medium input channel; So that heat-conducting medium is inputed in the pump housing; Flange straight tube 8 have with cylindrical body 12e in the heat-conducting medium output channel that is communicated with of heat-conducting medium output channel so that heat-conducting medium is exported in the pump housing.And in illustrated embodiment, be provided with two flange bend pipes 5 and three flange straight tube 8 (not shown)s, and flange bend pipe 5 is arranged on flange straight tube 8 outsides.Here, the effect of heat-conducting medium is to be used for the pump housing of heating cools off owing to transmit high-temperature material, thereby keeps pump (the especially Sealing in the pump housing) operation at a lower temperature, thereby prolongs the working life of pump.Preferably, the mode that the centrifugal pump of the utility model adopts air and water-cooled to combine is so that obtain better cooling effect.
And then, aforesaid, also be provided with flanged tee pipe 21 on the frame 12 of the centrifugal pump in Fig. 1 mode of execution, it is arranged on the exit side of frame 12 and is connected in cylindrical body 12e, and this flanged tee pipe 21 is communicated with discharging runner 12b.In this embodiment, flanged tee pipe 21 promptly uses as the discharging portion 12g of frame 12.Thus, can be with delivering to respectively two different upstream devices from the material of pump housing output.
Especially, can see that the central authorities of charging portion 12f are formed with boss 12h with reference to figure 2.This boss 12h is used to support the first inner housing 11a and the second inner housing 11b of the left and right sides on the one hand; On the other hand, boss 12h is divided into two-part with the top plan of charging portion 12f, makes the top surface difficulty of processing of charging portion 12f reduce like this.In addition, the lower of the first inner housing 11a and the second inner housing 11b all is formed with the recessed structure that cooperates with boss 12h, and the structure that this boss 12h matches with reentrant part also makes it possible to obtain better fluid-tight.Further, owing between the top plan of impeller 10 and charging portion 12f, need to form the flowing space of necessity, therefore, be formed with groove 12i in the central authorities of boss 12h (that is, corresponding position) with the outer rim of impeller 10.The degree of depth of this groove 12i for example can be between 10mm～20mm, and this flow is as required confirmed.
In addition, above-mentioned flange straight tube 8, flange bend pipe 5 and flanged tee pipe 21 can connect with welding to cylindrical body 12e.
Particularly, according to the centrifugal pump of the utility model, wherein the material of each major part and number are preferably as shown in table 1 below, and especially impeller 10 is processed by nickel Hart alloy NCA-1 with inner housing 12, can improve its abrasion resistance properties.
Table 1
| Reference number | Part name | Material | Number | |
| 1 | Dust cover | Corrosion resistant plate | 1 | |
| 2 | Central shaft | 42CrMo | 1 | |
| 3 | Integrated |
2 | ||
| 4 | | 1Cr13 | 2 | |
| 5 | The flange | 1Cr18Ni9Ti | 2 | |
| 6 | Seal ring | Graphite | 2 | |
| 7 | |
2 | ||
| 8 | The flange straight tube | 1Cr18Ni9Ti | 3 | |
| 9 | | Graphite | 2 | |
| 10 | Impeller | NCA-1 | 1 | |
| 11 | Inner housing | NCA-1 | 2 | |
| 12 | Axle sleeve | NCA-1 | 2 | |
| 13 | Floating | 1Cr18Ni9Ti | 2 | |
| 14 | Floating | 35CrMo | 2 | |
| 15 | | 30W4Cr2VA | 8 | |
| 16 | The floating | 1Cr18Ni9Ti | 2 | |
| 17 | The cooling | 1Cr13 | 4 | |
| 18 | | 35CrMo | 2 | |
| 19 | The Hough | 35CrMo | 4 | |
| 20 | The pump housing | NCA-1 | 1 | |
| 21 | The flanged tee pipe | 1Cr18Ni9Ti | 1 |
More than be merely the preferred embodiment of the utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various changes and variation.Any modification of being done within all spirit and principles at the utility model, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (10)
1. a centrifugal pump is characterized in that, comprising:
Central shaft (2) is connected in drive motor;
Rotor part (10) is set on the said central shaft (2);
Inner housing (11) is set on the said central shaft (2), comprises first inner housing (11a) and second inner housing (11b) that are arranged symmetrically in said rotor part (10) both sides along said central shaft (2);
Frame (12), said inner housing (11) are arranged in the said frame (12) and with said frame (12) and are fixedly connected;
Wherein, The feed side of said frame (12) is provided with bifurcated charging runner (12a) and exit side is provided with discharging runner (12b); Said feed side and exit side are separately positioned on the both sides of said central shaft (2); Said bifurcated charging runner (12a) have respectively with said first inner housing (11a) in first carry second in runner (11c) and second inner housing (11b) to carry runner (11d) to be communicated with bifurcated feed end (12c, 12d), the said first conveying runner (11c) and the second conveying runner (11d) meet at said discharging runner (12b).
2. centrifugal pump according to claim 1 is characterized in that,
Be provided with fixed guide key (22) between said frame (12) and the said inner housing (11); And said frame (12) is equipped with pump cover (4) along the two ends of said central shaft (2), and said pump cover (4) is enclosed in inside with said frame (12) with said inner housing (11).
3. centrifugal pump according to claim 2 is characterized in that, is provided with expansion loop (7) between said pump cover (4) and the said inner housing (11).
4. centrifugal pump according to claim 1 is characterized in that, vertically holds for two of said central shaft (2) and is provided with cartridge seal (3), and said cartridge seal (3) comprises the multi-stage mechanical sealing that is made up of Sealing and bearing.
5. centrifugal pump according to claim 1 is characterized in that, said frame (12) comprising:
Cylindrical body (12e), said inner housing (11) are arranged in the said cylindrical body (12e);
Charging portion (12f) and discharging portion (12g); Being separately positioned on said feed side is connected with exit side and with said cylindrical body (12e); Said bifurcated charging runner (12a) is formed in the said charging portion (12f), and said discharging runner (12b) is formed in the said discharging portion (12g).
6. centrifugal pump according to claim 5 is characterized in that,
Said charging portion (12f) and discharging portion (12g) form with said cylindrical body (12e) integratedly or independently.
7. centrifugal pump according to claim 5 is characterized in that, said frame (12) also comprises:
Flange bend pipe (5) and flange straight tube (8); All be arranged at the feed side of said cylindrical body (12e) and be connected in said cylindrical body (12e); Said flange bend pipe (5) has the heat-conducting medium input channel that is communicated with the interior heat-conducting medium input channel of said cylindrical body (12e); Said flange straight tube (8) has the heat-conducting medium output channel that is communicated with the interior heat-conducting medium output channel of said cylindrical body (12e), and said flange bend pipe (5) is arranged on said flange straight tube (8) outside.
8. according to claim 5 or 7 described centrifugal pumps, it is characterized in that said frame (12) also comprises:
Flanged tee pipe (21) is arranged on the exit side of said frame (12) and is connected in said cylindrical body (12e), and said flanged tee pipe (21) is communicated with said discharging runner (12b).
9. centrifugal pump according to claim 8 is characterized in that, said charging portion (12f) central authorities are formed with boss (12h), and said boss central authorities are formed with groove (12i).
10. centrifugal pump according to claim 1 is characterized in that, said rotor part (10) and said inner housing (11) are processed by nickel Hart alloy NCA-1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202823397U CN202203122U (en) | 2011-08-04 | 2011-08-04 | Centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202823397U CN202203122U (en) | 2011-08-04 | 2011-08-04 | Centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202203122U true CN202203122U (en) | 2012-04-25 |
Family
ID=45967244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202823397U Expired - Lifetime CN202203122U (en) | 2011-08-04 | 2011-08-04 | Centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202203122U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235369A (en) * | 2011-08-04 | 2011-11-09 | 神华集团有限责任公司 | Centrifugal pump |
| CN104265643A (en) * | 2014-10-16 | 2015-01-07 | 大连深蓝泵业有限公司 | Single-stage double-suction double-wheel double-barrel pump |
| CN108488074A (en) * | 2018-05-31 | 2018-09-04 | 合肥华升泵阀股份有限公司 | A kind of high lift two-stage Full-lining oil slurry pump of large high-temperature |
-
2011
- 2011-08-04 CN CN2011202823397U patent/CN202203122U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235369A (en) * | 2011-08-04 | 2011-11-09 | 神华集团有限责任公司 | Centrifugal pump |
| CN104265643A (en) * | 2014-10-16 | 2015-01-07 | 大连深蓝泵业有限公司 | Single-stage double-suction double-wheel double-barrel pump |
| CN108488074A (en) * | 2018-05-31 | 2018-09-04 | 合肥华升泵阀股份有限公司 | A kind of high lift two-stage Full-lining oil slurry pump of large high-temperature |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120425 |