CN204200697U - Impact-resistant horizontal axis sucks centrifugal pump - Google Patents
Impact-resistant horizontal axis sucks centrifugal pump Download PDFInfo
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- CN204200697U CN204200697U CN201420633988.0U CN201420633988U CN204200697U CN 204200697 U CN204200697 U CN 204200697U CN 201420633988 U CN201420633988 U CN 201420633988U CN 204200697 U CN204200697 U CN 204200697U
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- water
- bearing
- lubriucated bearing
- rotating shaft
- water lubriucated
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Abstract
The utility model discloses a kind of impact-resistant horizontal axis and suck centrifugal pump, its water-lubricated slide bearing means comprises axial suction casing (4), chopped-off head guide middle section (7), first stage impeller (5), water lubriucated bearing (6), described water lubrication shaft is housed between the rotating shaft (9) of rotor assembly and the water conservancy diversion side (8) of chopped-off head guide middle section, in described rotating shaft and gap location corresponding with water lubriucated bearing has rotating shaft step (10).The utility model is located at the rear side place of first stage impeller due to water lubriucated bearing, reduce the load impact that the sudden change of suction port operating mode brings directly to water lubriucated bearing, decrease the stability that various load affects water lubriucated bearing operation, make pump operation steadily good, water lubriucated bearing is placed in chopped-off head guide middle section, reduce original-pack accumulated error of joining, cancel former water lubrication shaft bearing sleeve simultaneously and adopt the rotating shaft of coated with hard alloy, improve the assembly precision of water lubriucated bearing, effectively ensure that the gap centering of its running sealing.
Description
Technical field
The present invention relates to centrifugal pump, specifically relate to a kind of horizontal axis and suck centrifugal pump.
Background technique
Because water-lubricated slide bearing means cost is low, environment friendly and pollution-free, anti-attrition is energy-conservation, good flame resistance.In recent years, in many pump series products, adopt using the liquid of self conveying as the water-lubricated slide bearing means of Lubricants, become a kind of developing direction of product specification.Especially for a kind of horizontal axis inhalation type multistage centrifugal pump, because the import and export of this centrifugal pump are for holding into upper outlet type structure (i.e. end feed liquor top fluid mode), support one end of the bearing assembly of this centrifugal pump is single armed roller bearings, its other end is that water-lubricated slide bearing means supports, the centralized positioning that this structure is assembled its rotating shaft when pump assembles is very strict, especially for the Spielpassung between water lubrication shaft bearing sleeve and rotating shaft.
This structure centrifugal pump start, shut down and rotation speed change time, its horizontal axis suction port can bear different flashy loads, because its water lubriucated bearing is sleeved on the suction choma of first stage impeller by water lubriucated bearing, when load action is at water lubriucated bearing and rotating shaft, its shaft core position also may be undergone mutation, make water lubriucated bearing running clearance eccentric, the equilibrium of the pressure membrane in destructible water lubriucated bearing gap; Secondly, as being corrosive and existing containing granule foreign in medium, also can destroy the pressure membrane in water lubriucated bearing gap, shorten the working life of water lubriucated bearing.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, and a kind of anti-various instantaneous load, stable impact-resistant horizontal axis suction centrifugal pump are provided.
Objects of the present invention are achieved through the following technical solutions: impact-resistant horizontal axis sucks centrifugal pump, comprise pump case, rotor assembly, bearing assembly, mechanical seal assembly, water lubrication shaft bearing apparatus, wherein water lubrication shaft bearing apparatus comprises axial suction casing, chopped-off head guide middle section, first stage impeller, water lubriucated bearing, described water lubrication shaft is housed between the rotating shaft of described rotor assembly and the water conservancy diversion side of chopped-off head guide middle section, in described rotating shaft and gap location corresponding with water lubriucated bearing has rotating shaft step.
After adopting the present invention, because water lubriucated bearing is located at the rear side place of first stage impeller, reduce the load impact that the sudden change of suction port operating mode brings directly to water lubriucated bearing, decrease the stability that various load affects water lubriucated bearing operation, make pump operation steadily good, water lubriucated bearing is placed in chopped-off head guide middle section, reduce original-pack accumulated error of joining, cancel former water lubrication shaft bearing sleeve simultaneously and take the rotating shaft step of coated with hard alloy, improve the assembly precision of water lubriucated bearing, effectively ensure that the gap centering of its running sealing.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and mode of execution, the present invention is described in further detail.
Fig. 1 is the mounting structure schematic diagram of the water lubrication shaft bearing apparatus in the present invention.
Fig. 2 is structural representation of the present invention.
Embodiment
Pass through Fig. 1, Fig. 2 is known, impact-resistant horizontal axis of the present invention sucks centrifugal pump, comprise pump case 21, rotor assembly 22, bearing assembly 23, mechanical seal assembly 24, water lubrication shaft bearing apparatus 25, wherein water lubrication shaft bearing apparatus 25 comprises axial suction casing 4, chopped-off head guide middle section 7, first stage impeller 5 (and secondary impeller 12), water lubriucated bearing 6, between the rotating shaft 9 that described water lubriucated bearing 6 (by major part screw 3) is contained in described rotor assembly 22 and the water conservancy diversion side 8 of chopped-off head guide middle section 7 (being namely in the rear side of first stage impeller 5), in described rotating shaft 9, and gap location (touching position) corresponding with water lubriucated bearing 6 has rotating shaft step 10.
On the inwall of described axial suction casing 4, and with first stage impeller 5 contacting point, impeller ring 2 (being namely contained in the front part sides of first stage impeller 5) is housed, the back side edge of described first stage impeller 5 is provided with relief hole 11, this relief hole 11 is communicated with the suction port side (low pressure area) of first stage impeller 5, make the high pressure water of the suction port side (zone of high pressure) of secondary impeller 12 by water lubriucated bearing gap, form pressure reduction return flow line, its role is to: produce Differential pressure flow liquid stream, play and support water lubriucated bearing effect, and the heat produced when water lubriucated bearing runs can be taken away rapidly, play cooling action.
Wherein: put together on the spindle nose of rotating shaft 9 with bolt 1 in the middle of the water conservancy diversion side 8 that described first stage impeller 5 is placed in chopped-off head guide middle section 7, described water lubriucated bearing 6 and to be sprayed with hardness be that the rotating shaft step 10 (instead of original water lubrication shaft bearing sleeve) of the cemented carbide of corrosion-resistant, the resistance to erosion of HRc55 ~ 60 forms one group of lubrication gap.The lubrication material of this water lubriucated bearing adopts the imperial material of match to make, and this material has obvious low friction performance, good elasticity and high impact resistance and stronger bearing capacity.This water lubriucated bearing need calculate through shaft strength, draw support force needed for it and calculate water lubriucated bearing length between than (i.e. water lubriucated bearing length and water lubriucated bearing lubrication gap diameter than), the bearing throw of eccentric of required support force and the pressure distribution of water lubriucated bearing, these have all been come by computer by design programming program.
Claims (2)
1. impact-resistant horizontal axis sucks centrifugal pump, comprise pump case (21), rotor assembly (22), bearing assembly (23), mechanical seal assembly (24), water lubrication shaft bearing apparatus (25), wherein water lubrication shaft bearing apparatus (25) comprises axial suction casing (4), chopped-off head guide middle section (7), first stage impeller (5), water lubriucated bearing (6), it is characterized in that: described water lubriucated bearing (6) is contained between the rotating shaft (9) of described rotor assembly (22) and the water conservancy diversion side (8) of chopped-off head guide middle section (7), in described rotating shaft (9), and with water lubriucated bearing (6) corresponding gap location, there is rotating shaft step (10).
2. impact-resistant horizontal axis according to claim 1 sucks centrifugal pump, it is characterized in that: with first stage impeller (5) contacting point, impeller ring (2) is housed on the inwall of described axial suction casing (4), the back side edge of described first stage impeller (5) is provided with relief hole (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420633988.0U CN204200697U (en) | 2014-10-28 | 2014-10-28 | Impact-resistant horizontal axis sucks centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420633988.0U CN204200697U (en) | 2014-10-28 | 2014-10-28 | Impact-resistant horizontal axis sucks centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204200697U true CN204200697U (en) | 2015-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420633988.0U Active CN204200697U (en) | 2014-10-28 | 2014-10-28 | Impact-resistant horizontal axis sucks centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204200697U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109185217A (en) * | 2018-11-28 | 2019-01-11 | 无锡艾比德泵业有限公司 | A kind of suction inlet is the water inlet segment structure of the centrifugal multistage pump multiple centrifugal pump of fish mouth type |
-
2014
- 2014-10-28 CN CN201420633988.0U patent/CN204200697U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109185217A (en) * | 2018-11-28 | 2019-01-11 | 无锡艾比德泵业有限公司 | A kind of suction inlet is the water inlet segment structure of the centrifugal multistage pump multiple centrifugal pump of fish mouth type |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |