CN202833185U - Double-suction multi-stage horizontal mid-split pump - Google Patents
Double-suction multi-stage horizontal mid-split pump Download PDFInfo
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- CN202833185U CN202833185U CN201220476171.8U CN201220476171U CN202833185U CN 202833185 U CN202833185 U CN 202833185U CN 201220476171 U CN201220476171 U CN 201220476171U CN 202833185 U CN202833185 U CN 202833185U
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Abstract
The utility model relates to a double-suction multi-stage horizontal mid-split pump which mainly comprises a pump cover, a pump base and a pump shaft. The pump cover and the pump base are vertically spliced to form a pump case water pumping chamber. A first-stage impeller and more than one pair of back-to-back secondary-stage impellers are mounted on the pump shaft from left to right. The first-stage impeller is communicated with a first-stage water suction chamber and a first-stage water pumping chamber which are arranged on a volute. The first-stage water suction chamber is communicated with an inlet. The secondary-stage impellers are communicated with corresponding water suction chambers and water pumping chambers. The water pumping chamber communicated with the secondary-stage impeller which is arranged in a reverse mode is communicated with an outlet. The double-suction multi-stage horizontal mid-split pump has the advantages that the pump seat is provided with the only one inlet so that installation of a pipeline is convenient; the first-stage impeller is a double-suction impeller so that the suction performance of the pump is further improved; the secondary-stage impellers are arranged in a back-to-back mode, and therefore axial force is balanced; and the outlet is arranged in the middle of the pump according to the structure of the pump so that the pressure of a sealing cavity is approximate to the pressure of the inlet, and therefore the product validation (PV) value of mechanical seal is effectively lowered.
Description
Technical field
The utility model relates to a kind of middle-opening pump, especially a kind of double-suction multistage horizontal middle-opening pump.
Background technique
The scheme that existing Double entry middle-opening pump has patent 200820185699.3,200920063893.9 to announce has two first stage impellers to be symmetrically distributed in back-to-back secondary impeller both sides, and secondary impeller is double-entry impeller, and pump seat has outlet of two imports.This scheme need to be installed two inlet ductwork, identical performance lift needs more impeller progression, spiral case is relatively longer heavier, because two first stage impellers and secondary double-entry impeller reality only are equivalent to the both stage impellers supercharging, need to increase two pairs of first stage impellers when needing the supercharging of level Four impeller, the length that needs spiral case to double has increased and has made difficulty again, water pump is heavier, and installation and maintenance are more difficult.
The centrifugal pump of the existing overwhelming majority all is to adopt single spiral case, and such structure is as producing certain radial force when off-design point uses, and off-design point is more, and radial force is just larger, and is just more unfavorable to the stationarity of water pump complete machine running.
And domestic present horizontal split pump still adopts the material filling type sealing, not only leaks to be difficult to avoid, and main is that power loss is larger.Though the mechanical seal of employing form is also arranged, all be the bulk type structure, installation and replacing are very inconvenient.
Summary of the invention
The utility model will solve the shortcoming of above-mentioned prior art, provide a kind of simple in structure, performance is higher and disassembling, assembling and replacing double-suction multistage horizontal middle-opening pump easily.
The utility model solves the technological scheme that its technical problem adopts: this double-suction multistage horizontal middle-opening pump, mainly comprise pump cover, pump seat and pump shaft, pump cover and pump seat up and down amalgamation form the pump case pumping chamber, the pump case pumping chamber is double volute double flow channel structure, be equipped with from left to right on the pump shaft first stage impeller and a pair of more than the secondary impeller that arranges back-to-back, first stage impeller is communicated with one-level suction chamber and the one-level pumping chamber on the spiral case, the one-level suction chamber is communicated with import, secondary impeller is communicated with corresponding suction chamber and pumping chamber, the pumping chamber that the secondary impeller of reversed arrangement is communicated with is communicated with outlet, import and outlet all be positioned at pump shaft below and with pump seat cast solid, the sealing employing detachable type machine for the assembly of unit load tool sealing configuration at pump case and pump shaft two ends.
Described secondary impeller is two pairs, the secondary impeller of the first two and latter two secondary impeller are for being symmetrical arranged back-to-back, each secondary impeller in four secondary impellers all is communicated with corresponding suction chamber and pumping chamber, circulation by liquid sequentially is followed successively by secondary suction chamber, secondary pumping chamber, three grades of suction chambers, three grades of pumping chambers, level Four suction chamber, level Four pumping chamber, Pyatyi suction chamber and Pyatyi pumping chambers, and the Pyatyi pumping chamber is communicated with outlet.
Described secondary impeller is a pair of, two secondary impellers are symmetric design back-to-back, each secondary impeller in two secondary impellers all is communicated with corresponding suction chamber and pumping chamber, circulation by liquid sequentially is followed successively by secondary suction chamber, secondary pumping chamber, three grades of suction chambers and three grades of pumping chambers, and three grades of pumping chambers are communicated with outlet.
Described first stage impeller is double-entry impeller, and secondary impeller is single suction impeller.
Be provided with balance tube in the described pump seat, the two ends of pump shaft are separately installed with fore bearing section dress and rear bearing section dress, are provided with bearing housing in the bearing portion dress, be provided with disc in the bearing housing, the bearing housing outer wall adopts the structure of fan blade, and the pump shaft in the bearing housing outside is provided with fan, and bearing housing is provided with the positioning lubricating cup.
Be connected with oil draining system and drainage under the described pump seat.
Be connected with the venting rinse-system on the described pump cover.
The effect that the utility model is useful is: only have an import on the pump seat of the present utility model, pipeline is installed more convenient, first stage impeller is double-entry impeller, further improve the suction performance of pump, secondary impeller is installed back-to-back, balance axial force, double volute and double flow channel constitutional balance radial force, can greatly reduce the vibrations of pump, improve the reliability of pump operation, prolong the working life of pump, impeller makes more compact structure under the identical lift by the overlapped in series supercharging, has reduced the span of axle and the casting defect of pump case, the outstanding advantages that adopts cartridge mechanical seal is maintenance, change very convenient, can greatly shorten service cycle, pump structure is to export at the middle part of pump, and high voltage terminal is by labyrinth ring and balance tube step-down, make Seal cage pressure near inlet pressure, thereby effectively reduce the PV value of mechanical seal, not only improve the working life of mechanical seal, and reduced cost.
Description of drawings
Fig. 1 is the utility model embodiment 1 structural representation;
Fig. 2 is the left TV structure schematic diagram of the B-B of Fig. 1;
Fig. 3 is the plan structure schematic diagram of the pump seat of Fig. 1;
Fig. 4 is the plan structure schematic diagram of the pump cover of Fig. 1;
Fig. 5 is the utility model embodiment 2 structural representation.
Description of reference numerals: pump cover 1, pump seat 2, pump shaft 3, first stage impeller 4, secondary impeller 5, oil draining system 6, drainage 7, venting rinse-system 8, import 9, outlet 10, one-level suction chamber 11, one-level pumping chamber 12, detachable type machine for the assembly of unit load tool sealing configuration 13, disc 14, fan 15, fan blade 16, positioning lubricating cup 17, secondary suction chamber 21,31, three grades of pumping chambers 32 of 22, three grades of suction chambers of secondary pumping chamber, level Four suction chamber 41, level Four pumping chamber 42, Pyatyi suction chamber 51, Pyatyi pumping chamber 52.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
Embodiment 1, shown in Fig. 1-4, this double-suction multistage horizontal middle-opening pump, mainly comprise pump cover 1, pump seat 2 and pump shaft 3, pump cover 1 and pump seat be amalgamation composition pump case pumping chamber about in the of 2, the pump case pumping chamber is double volute double flow channel structure, be equipped with from left to right on the pump shaft 3 first stage impeller 4 and a pair of more than the secondary impeller 5 that arranges back-to-back, secondary impeller 5 back-to-back mounting types, every grade of impeller pressure is pressurized to outlet by the runner overlapped in series, in identical delivery pressure situation, the impeller that needs still less, spiral case is shorter.First stage impeller 4 is double-entry impeller, and secondary impeller 5 is single suction impeller.One-level suction chamber 11 and one-level pumping chamber 12 that first stage impeller 4 is communicated with on the spiral case, one-level suction chamber 11 is communicated with import 9, secondary impeller 5 is communicated with corresponding suction chamber and pumping chamber, the pumping chamber that the secondary impeller 5 of reversed arrangement is communicated with is communicated with outlet 10, secondary impeller 5 is two pairs, the secondary impeller 5 of the first two and latter two secondary impeller 5 are for being symmetrical arranged back-to-back, each secondary impeller 5 in four secondary impellers 5 all is communicated with corresponding suction chamber and pumping chamber, circulation by liquid sequentially is followed successively by secondary suction chamber 21, secondary pumping chamber 22, three grades of suction chambers 31, three grades of pumping chambers 32, level Four suction chamber 41, level Four pumping chamber 42, Pyatyi suction chamber 51 and Pyatyi pumping chamber 52, Pyatyi pumping chamber 52 is communicated with outlet 10, secondary, three grades of impellers are arranged on the first stage impeller right side in the same way, level Four, the Pyatyi impeller oppositely and by connecting tube is communicated with three grades of pumping chambers 32, the secondary impeller 5 that is installed on the pump shaft 3 adopts single suction impeller to be arranged in back-to-back the first-stage double suction impeller right side, the in the same way side supercharging of secondary impeller 5 of arranging back-to-back by the inner flow passage guiding after the supercharging of liquid process first-stage double suction impeller, again by lead connecting tube secondary impeller 5 reversed arrangement side superchargings until the outlet, import 9 and outlet 10 all be positioned at pump shaft 3 belows and with pump seat 2 cast solids, the sealing employing detachable type machine for the assembly of unit load tool sealing configuration 13 at pump case and pump shaft 3 two ends.
One-level pumping chamber 12 is communicated with the secondary suction chamber by connecting tube, after 12 superchargings of liquid process first-stage double suction impeller one-level pumping chamber, pass through again twice pumping chamber supercharging behind secondary suction chamber 21, secondary pumping chamber 22, three grades of suction chambers 31, the three grades of pumping chambers 32, the secondary impeller 5 by inner flow passage guiding reversed arrangement again, twice pumping chamber supercharging behind level Four suction chamber 41, level Four pumping chamber 42, Pyatyi suction chamber 51, Pyatyi pumping chamber 52 is from Pyatyi pumping chamber 52 exits 10.
First stage impeller is double-entry impeller 4, secondary impeller 5 is installed for mode back-to-back, the axial force opposite direction that produces, balance axial force, liquid through double-entry impellers 4 pressurizations, is directed to secondary impeller 5 by double flow channel by import 9 again, liquid through five superchargings after by double flow channel exit 10, impeller makes more compact structure under the identical lift by the overlapped in series supercharging, has reduced the span of axle and the casting defect of pump case.
Pump seat is connected with oil draining system 6 and drainage 7 for 2 times, is connected with venting rinse-system 8 on the described pump cover, and oil draining system 6, drainage 7 and venting rinse-system 8 all link to each other with same outer pipe.
Pump structure for outlet 10 at the middle part of pump, and high voltage terminal makes Seal cage pressure near inlet pressure by labyrinth ring and balance tube step-down, thereby effectively reduces the PV value of mechanical seal, not only improved the working life of mechanical seal, and reduced cost.
Be provided with balance tube in the pump seat 2, the two ends of pump shaft 3 are separately installed with fore bearing section dress and rear bearing section dress, be provided with bearing housing in the bearing portion dress, the bearing housing of large grease chamber has increased heat diffusion area, make the temperature rise of bearing drop to minimum, the type of cooling of bearing can adopt nature cooling, air-cooled and water-cooling structure according to specific requirement, and the generalization degree is high; Be provided with the thin oil lubricant of disc 14 in the bearing housing as the lubricating system of bearing, adopt positioning lubricating cup 17 to regulate level height and automatic repairing, assurance bearing lubrication is reliable, the pump shaft 3 in the bearing housing outside is provided with fan 15 and adds forced air cooling, and the bearing housing outer wall adopts the structural strengthening heat sinking function of fan blade 16.
Embodiment 2, as shown in Figure 5, this double-suction multistage horizontal middle-opening pump, comprise pump seat 2, pump cover 1, pump shaft 3, by pump seat 2, the pump case pumping chamber that pump cover 1 forms adopts double volute double flow channel structure, first stage impeller 4 and a pair of back-to-back secondary impeller 5 of design are installed on the pump shaft 3, two secondary impellers 5 are symmetric design back-to-back, each secondary impeller 5 in two secondary impellers 5 all is communicated with corresponding suction chamber and pumping chamber, circulation by liquid sequentially is followed successively by secondary suction chamber 21, secondary pumping chamber 22, three grades of suction chambers 31 and 32, three grades of pumping chambers 32 of three grades of pumping chambers are communicated with outlet 10.One-level suction chamber 11 and one-level pumping chamber 12 that first stage impeller 4 is communicated with on the spiral case, one-level suction chamber 11 is communicated with import 9, one-level pumping chamber 12 is communicated with secondary suction chamber 21, secondary impeller 5 adopts single suction impeller to be installed in back-to-back on the pump shaft, and be communicated with successively the secondary suction chamber 21 on the spiral case, secondary pumping chamber 22, three grades of suction chambers 31, three grades of pumping chambers 32, three grades of pumping chambers 32 are communicated with outlet 10, secondary, three grades of impellers are arranged on the first stage impeller right side back-to-back, import 9 and outlet 10 all be positioned at pump shaft 3 belows and with pump seat 2 cast solids, pump case and pump shaft 3 sealed at both ends employing detachable type machine for the assembly of unit load tool sealing configurations 13.
In addition to the implementation, the utility model can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (8)
1. double-suction multistage horizontal middle-opening pump, mainly comprise pump cover (1), pump seat (2) and pump shaft (3), it is characterized in that: pump cover (1) and pump seat (2) up and down amalgamation form the pump case pumping chamber, the pump case pumping chamber is double volute double flow channel structure, be equipped with from left to right on the pump shaft (3) first stage impeller (4) and a pair of more than the secondary impeller (5) that arranges back-to-back, first stage impeller (4) is communicated with one-level suction chamber (11) and the one-level pumping chamber (12) on the spiral case, one-level suction chamber (11) is communicated with import (9), secondary impeller (5) is communicated with corresponding suction chamber and pumping chamber, the pumping chamber that the secondary impeller (5) of reversed arrangement is communicated with is communicated with outlet (10), import (9) and outlet (10) all be positioned at pump shaft (3) below and with pump seat (2) cast solid, the sealing employing detachable type machine for the assembly of unit load tool sealing configuration (13) at pump case and pump shaft (3) two ends.
2. double-suction multistage horizontal middle-opening pump according to claim 1, it is characterized in that: described secondary impeller (5) is two pairs, the secondary impeller of the first two (5) and latter two secondary impeller (5) are for being symmetrical arranged back-to-back, each secondary impeller (5) in four secondary impellers (5) all is communicated with corresponding suction chamber and pumping chamber, circulation by liquid sequentially is followed successively by secondary suction chamber (21), secondary pumping chamber (22), three grades of suction chambers (31), three grades of pumping chambers (32), level Four suction chamber (41), level Four pumping chamber (42), Pyatyi suction chamber (51) and Pyatyi pumping chamber (52), Pyatyi pumping chamber (52) is communicated with outlet (10).
3. double-suction multistage horizontal middle-opening pump according to claim 1, it is characterized in that: described secondary impeller (5) is for a pair of, two secondary impellers (5) are symmetric design back-to-back, each secondary impeller (5) in two secondary impellers (5) all is communicated with corresponding suction chamber and pumping chamber, circulation by liquid sequentially is followed successively by secondary suction chamber (21), secondary pumping chamber (22), three grades of suction chambers (31) and three grades of pumping chambers (32), and three grades of pumping chambers (32) are communicated with outlet (10).
4. according to claim 1,2 or 3 described double-suction multistage horizontal middle-opening pumps, it is characterized in that: described first stage impeller (4) is double-entry impeller, and secondary impeller (5) is single suction impeller.
5. double-suction multistage horizontal middle-opening pump according to claim 1, it is characterized in that: described pump seat is provided with balance tube in (2), the two ends of pump shaft (3) are separately installed with fore bearing section dress and rear bearing section dress, be provided with bearing housing in the bearing portion dress, be provided with disc (14) in the bearing housing, the bearing housing outer wall adopts the structure of fan blade (16), and the pump shaft (3) in the bearing housing outside is provided with fan (15), and bearing housing is provided with positioning lubricating cup (17).
6. double-suction multistage horizontal middle-opening pump according to claim 1 is characterized in that: be connected with oil draining system (6) and drainage (7) under the described pump seat (2).
7. double-suction multistage horizontal middle-opening pump according to claim 1 is characterized in that: be connected with venting rinse-system (8) on the described pump cover (1).
8. it is characterized in that according to claim 6 or 7 described double-suction multistage horizontal middle-opening pumps: described oil draining system (6), drainage (7) and venting rinse-system (8) all link to each other with same outer pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220476171.8U CN202833185U (en) | 2012-09-18 | 2012-09-18 | Double-suction multi-stage horizontal mid-split pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220476171.8U CN202833185U (en) | 2012-09-18 | 2012-09-18 | Double-suction multi-stage horizontal mid-split pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202833185U true CN202833185U (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220476171.8U Expired - Lifetime CN202833185U (en) | 2012-09-18 | 2012-09-18 | Double-suction multi-stage horizontal mid-split pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202833185U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828959A (en) * | 2012-09-18 | 2012-12-19 | 南方泵业股份有限公司 | Double-suction multistage horizontal type horizontal split pump |
| CN102828960A (en) * | 2012-09-18 | 2012-12-19 | 南方泵业股份有限公司 | Double suction multistage horizontal split pump |
| CN107100856A (en) * | 2017-06-08 | 2017-08-29 | 江苏河海给排水成套设备有限公司 | A kind of heavy duty detergent high suction depth formula dry type double entry pump |
-
2012
- 2012-09-18 CN CN201220476171.8U patent/CN202833185U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828959A (en) * | 2012-09-18 | 2012-12-19 | 南方泵业股份有限公司 | Double-suction multistage horizontal type horizontal split pump |
| CN102828960A (en) * | 2012-09-18 | 2012-12-19 | 南方泵业股份有限公司 | Double suction multistage horizontal split pump |
| CN102828959B (en) * | 2012-09-18 | 2014-12-03 | 南方泵业股份有限公司 | Double-suction multistage horizontal type horizontal split pump |
| CN107100856A (en) * | 2017-06-08 | 2017-08-29 | 江苏河海给排水成套设备有限公司 | A kind of heavy duty detergent high suction depth formula dry type double entry pump |
| CN107100856B (en) * | 2017-06-08 | 2024-01-09 | 江苏河海给排水成套设备有限公司 | High-efficient formula dry-type double suction pump that absorbs highly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: HUNAN NANFANG CHANGHE PUMP INDUSTRY CO.,LTD. Assignor: Nanfang Pump Industry Co.,Ltd. Contract record no.: 2015430000043 Denomination of utility model: Double suction multistage horizontal split pump Granted publication date: 20130327 License type: Exclusive License Record date: 20150518 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: No. 46 Hangzhou City, Zhejiang province 311107 Yuhang District Renhe Street Renhe Road Patentee after: NANFANG ZHONGJIN ENVIRONMENT CO.,LTD. Address before: Renhe Town of Yuhang District of Hangzhou City, Zhejiang province 311107 Patentee before: Nanfang Pump Industry Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |