CN201705675U - Novel multistage centrifugal pump - Google Patents
Novel multistage centrifugal pump Download PDFInfo
- Publication number
- CN201705675U CN201705675U CN2010202463429U CN201020246342U CN201705675U CN 201705675 U CN201705675 U CN 201705675U CN 2010202463429 U CN2010202463429 U CN 2010202463429U CN 201020246342 U CN201020246342 U CN 201020246342U CN 201705675 U CN201705675 U CN 201705675U
- Authority
- CN
- China
- Prior art keywords
- pump
- pump shaft
- bearing
- multistage centrifugal
- accumulator
- Prior art date
- 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 relates to a multistage centrifugal pump, in particular to a novel multistage centrifugal pump which does not leak and can regulate the axial force. The multistage centrifugal pump comprises a pump shaft, and the pump shaft is matched with a discharge casing, a dual- case body, an oil storage chamber and a seal end cover; a balance plate disk and a secondary impeller are matched between the discharge casing and the dual-case body; an organic gland cover and a static ring are matched between the pump shaft and the oil storage chamber in sequence; and a mechanical seal is arranged between the organic gland cover and the pump shaft. The utility model is characterized in that a sliding bearing and a thrust bearing which are integrated with the oil storage chamber are matched between the oil storage chamber and the pump shaft in sequence, and the end of the thrust bearing is matched with a bearing stop pad and a locknut in sequence. The utility model can reduce the leakage rate of the pump and prolong the service life of the multistage centrifugal pump while reducing the abrasion of the balance plate disk.
Description
Technical field
The utility model relates to a kind of multistage centrifugal pump, especially relates to a kind of novel multistage centrifugal pump that leaks and can adjust axial force that do not have.
Background technique
At present, all adopt balance plate dish device on the known axial force in multi-stage centrifugal pump balance.This device energy automatically balancing axial force, but multistage centrifugal pump is when frequent starting or the pump housing have situations such as gas, pump is equilibrium establishment power at once, the balance plate dish can not separated immediately in this state, cause the balance plate dish to wear and tear moment, after switching on and shutting down reached certain number of times, the balance plate dish will may wear to a certain degree, the rotor of pump can be to the motor drive direction play like this, faults such as vibrations, the electric current of generation pump is too high, bearing temperature rising.And multistage pump uses mechanical seal separately in sealing, the medium that pump is carried makes the mechanical seal of pump damage easily, and when pump shaft is subjected to displacement, the seal ring of mechanical seal deforms easily, has between the dynamic and static ring minute surface that impurity enters or reason such as dry grinding makes pump be easy to produce to leak.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of structure uniqueness, can be when reducing the balance plate mill and decreasing, can reduce pump leakage rate, improve the novel multistage centrifugal pump in the working life of multistage centrifugal pump.
The utility model is realized in the following way:
A kind of novel multistage centrifugal pump, it comprises and is combined with Spit Section, two letter body, accumulator and end cover on pump shaft, the pump shaft from left to right successively, between Spit Section and two letter body, be combined with balance plate dish and sub-propeller, between pump shaft and accumulator, cooperate organic big envelope and stationary ring successively, be provided with mechanical seal between organic big envelope and the pump shaft, it is characterized in that: being combined with successively between above-mentioned accumulator and pump shaft with this accumulator is the sliding bearing and the thrust-bearing of one, is combined with bearing retaining pad and locking nut successively in the end of this thrust-bearing;
Be provided with bearing housing between described thrust-bearing and the described pump shaft;
Be provided with tank filler sleeve and radiation hole at described accumulator top, the bottom is provided with drain oil.
The utility model has following effect:
1) structure uniqueness: it comprises pump shaft the device that the utility model provides, be combined with the Spit Section on the pump shaft from left to right successively, two letter bodies, accumulator and end cover, between Spit Section and two letter body, be combined with balance plate dish and sub-propeller, between pump shaft and accumulator, cooperate organic big envelope and stationary ring successively, be provided with mechanical seal between organic big envelope and the pump shaft, it is characterized in that: being combined with successively between above-mentioned accumulator and pump shaft with this accumulator is the sliding bearing and the thrust-bearing of one, is combined with bearing retaining pad and locking nut successively in the rearward end of this thrust-bearing;
2) can be when reducing the balance plate mill and decreasing, can reduce the leakage rate of pump, the working life of improving multistage centrifugal pump: the device that the utility model provides carries out two the adjustment to the multistage centrifugal pump equilibrant, in pump balance plate disc mechanism constitutional balance axial force, increase the thrust-bearing that carries out moment adjustment longitudinal balance the balanced controls of pump are reduced wear, the service time of growth equilibrium plate dish.The sealing means that the pump seal utilization is association of activity and inertia, pump is that the motive sealing sub-propeller seals in running, carries out static seal with the machine envelope when stopping, static seal device has special-purpose lubricating chamber to make static seal oil lubricating machine envelope in the running, and protection machine envelope.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
A kind of novel multistage centrifugal pump, it comprises pump shaft 1, be combined with Spit Section 2 on the pump shaft 1 from left to right successively, two letter bodies 5, accumulator 8 and end cover 15, between Spit Section 2 and two letter body 5, be combined with balance plate dish 3 and sub-propeller 4, between pump shaft 1 and accumulator 8, cooperate organic big envelope 7 and stationary ring 6 successively, be provided with mechanical seal 9 between organic big envelope 7 and the pump shaft 1, as shown in Figure 1: between above-mentioned accumulator 8 and pump shaft 1, be combined with successively with this accumulator 8 and be the sliding bearing 10 of one and thrust-bearing 11, be combined with bearing retaining pad 13 and locking nut 14 in the end of this thrust-bearing 11 successively.
Be provided with bearing housing 12 between above-mentioned thrust-bearing 11 and the described pump shaft 1.
Be provided with tank filler sleeve and radiation hole at described accumulator 8 tops, the bottom is provided with drain oil.
Sub-propeller 4 centrifugal seals are adopted in the utility model motive sealing as shown in Figure 1, and sub-propeller is installed on the pump shaft 1, and it is watertight that pump reaches in the running.Sub-propeller letter body and stationary ring letter body are two letter bodies 5 of one, and accumulator 8 connects with two letter body and function screws, and organic big envelope 7 on two letter body stationary ring 6 axis of orientations has mechanical seal 9 rotating rings on the machine big envelope, pump is played the static seal effect.The sliding bearing 10 that pump shaft is played radial effect power nestles up the machine big envelope, cooperate the thrust-bearing 11 of adjusting the pump axial force to link to each other with being installed in Spit Section 2 balance plate dishes 3 with sliding bearing, the thrust axis socket end has bearing housing 12 to abut against bearing retaining pad 13, and axle head is locked with locknut 14.The bearing support and the accumulator of thrust-bearing and sliding bearing are designed to one, and bearing seal end cap 15 usefulness screws are screwed on the accumulator.In accumulator, add machine oil, mechanical seal, thrust-bearing and the sliding bearing of pump is lubricated.At the top of accumulator tank filler sleeve and radiation hole are arranged, drain oil is arranged at the bottom.
Claims (3)
1. novel multistage centrifugal pump, it comprises pump shaft (1), be combined with Spit Section (2) on the pump shaft (1) from left to right successively, two letter bodies (5), accumulator (8) and end cover (15), between Spit Section (2) and two letter body (5), be combined with balance plate dish (3) and sub-propeller (4), between pump shaft (1) and accumulator (8), cooperate organic big envelope (7) and stationary ring (6) successively, be provided with mechanical seal (9) between organic big envelope (7) and the pump shaft (1), it is characterized in that: between above-mentioned accumulator (8) and pump shaft (1), be combined with successively with this accumulator (8) and be sliding bearing of one (10) and thrust-bearing (11), be combined with bearing retaining pad (13) and locking nut (14) in the end of this thrust-bearing (11) successively.
2. novel multistage centrifugal pump as claimed in claim 1 is characterized in that: be provided with bearing housing (12) between described thrust-bearing (11) and the described pump shaft (1).
3. novel multistage centrifugal pump as claimed in claim 1 is characterized in that: be provided with tank filler sleeve and radiation hole at described accumulator (8) top, the bottom is provided with drain oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202463429U CN201705675U (en) | 2010-07-05 | 2010-07-05 | Novel multistage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202463429U CN201705675U (en) | 2010-07-05 | 2010-07-05 | Novel multistage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201705675U true CN201705675U (en) | 2011-01-12 |
Family
ID=43442831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202463429U Expired - Fee Related CN201705675U (en) | 2010-07-05 | 2010-07-05 | Novel multistage centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201705675U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329267A (en) * | 2014-09-04 | 2015-02-04 | 武汉船用机械有限责任公司 | Low-temperature submerged pump and motor thereof |
-
2010
- 2010-07-05 CN CN2010202463429U patent/CN201705675U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329267A (en) * | 2014-09-04 | 2015-02-04 | 武汉船用机械有限责任公司 | Low-temperature submerged pump and motor thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20110112 Termination date: 20110705 |