CN212155167U - Double-suction pump with cylindrical roller bearing on driving side - Google Patents
Double-suction pump with cylindrical roller bearing on driving side Download PDFInfo
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- CN212155167U CN212155167U CN202020310626.3U CN202020310626U CN212155167U CN 212155167 U CN212155167 U CN 212155167U CN 202020310626 U CN202020310626 U CN 202020310626U CN 212155167 U CN212155167 U CN 212155167U
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Abstract
The utility model relates to a double suction pump with a cylindrical roller bearing at the driving side; the method comprises the following steps: the impeller is fixedly arranged on the pump shaft through the flat key; the non-driving side bearing is fixed on the non-driving side of the pump shaft through a round nut, the shaft sleeve is sleeved on the pump shaft on two sides of the impeller, a bearing retaining sleeve is arranged between the shaft sleeve and the driving side bearing, a bearing retaining sleeve is arranged between the shaft sleeve and the non-driving side bearing, and the driving side bearing is a driving side cylindrical roller bearing; the matching of the shaft sleeve and the impeller adopts a spigot matching mode; the diameters of the bearing blocking sleeve and the shaft sleeve are smaller than the shaft diameter of the bearing on the installation driving side. The utility model discloses can promote pump shaft strength, reduce disconnected axle risk, prolong the life of pump.
Description
Technical Field
The utility model relates to a double suction pump, concretely relates to can promote pump shaft strength, reduce disconnected axle risk, the drive side of the life of extension pump adopts cylindrical roller bearing's double suction pump.
Background
The single-stage double-suction horizontal split centrifugal pump is widely applied to the occasions of urban water supply and drainage, central heating, steel plants, power plants and power stations, petrochemical industry, air conditioning system water supply, farmland irrigation and the like, and is characterized by high lift, large flow and convenient maintenance; the structure is symmetrical, the axial force in the operation process is very small, and the operation is stable.
The rotor part structure mode of the existing horizontal split double-suction pump is characterized by comprising the following steps: the driving side and the non-driving side adopt deep groove ball bearings; the bearing on the driving side is positioned by the retainer ring and the shaft shoulder. Because the retaining ring needs to be installed, a groove needs to be formed in the shaft. In actual operation, stress concentration is easily generated at the groove, and the strength of the shaft is reduced; when the pump is operated under the non-design working condition, the radial force borne by the rotor part is increased. Under the action of the two factors, the pump shaft can be broken and the like in severe cases, and the service life of the pump is shortened.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model aims to provide a can promote pump shaft strength, reduce disconnected axle risk, the drive side of the life of extension pump adopts cylindrical roller bearing's double entry pump.
The utility model discloses a solve above-mentioned technical problem through following technical scheme: a double suction pump with a cylindrical roller bearing on the driving side; the double suction pump with the cylindrical roller bearing adopted at the driving side comprises: the impeller is fixedly arranged on the pump shaft through the flat key; the non-driving side bearing is fixed on the non-driving side of the pump shaft through a round nut, the shaft sleeve is sleeved on the pump shaft on two sides of the impeller, a bearing retaining sleeve is arranged between the shaft sleeve and the driving side bearing, a bearing retaining sleeve is arranged between the shaft sleeve and the non-driving side bearing, and the driving side bearing is a driving side cylindrical roller bearing; the matching of the shaft sleeve and the impeller adopts a spigot matching mode; the diameters of the bearing blocking sleeve and the shaft sleeve are smaller than the shaft diameter of the bearing on the installation driving side.
In a specific embodiment of the present invention; the non-driving side bearing is a non-driving side deep groove ball bearing.
In a specific embodiment of the present invention; and a sealing ring is arranged between the bearing blocking sleeve and the shaft sleeve.
In a specific embodiment of the present invention; the section of the matching part of the shaft sleeve and the impeller is an L-shaped step, and the impeller is provided with a step-shaped spigot matched with the L-shaped step on the shaft sleeve.
The utility model discloses an actively advance the effect and lie in: the utility model provides a two suction pumps that drive side adopted cylindrical roller bearing have following advantage: the utility model provides a two suction pumps of cylindrical roller bearing are adopted to the drive side, can promote pump shaft strength, reduce disconnected axle risk, prolong the life of pump.
Drawings
Fig. 1 is a schematic structural view of a rotor of a conventional double suction pump.
Fig. 2 is a schematic view of a structure of a conventional double suction pump drive side bearing.
Fig. 3 is the schematic structural diagram of the rotor of the double suction pump provided by the present invention.
Fig. 4 is a schematic view of the structure of the rotor at the bearing on the driving side of the double suction pump of the present invention.
The utility model discloses the name that well reference numeral corresponds:
the device comprises a flat key 1, a shaft elastic retainer ring 2, a driving side deep groove ball bearing 3, a driving side cylindrical roller bearing 3', a bearing retaining sleeve 4, a shaft sleeve 5, a flat key 6, an impeller 7, a pump shaft 8, a non-driving side deep groove ball bearing 9, a gasket 10 and a round nut 11.
Detailed Description
The following provides a preferred embodiment of the present invention with reference to the accompanying drawings to explain the technical solutions of the present invention in detail.
The utility model aims at solving the problem in the background art, provide a new double entry pump rotor part structure, improve the intensity of pump shaft. Fig. 1 is a schematic structural view of a rotor of a conventional double suction pump. Fig. 2 is a schematic view of a structure of a conventional double suction pump drive side bearing. As shown in figures 1-2: the original rotor component mainly comprises a flat key 1, an elastic retainer ring for a shaft 2, a driving side deep groove ball bearing 3, a bearing retaining sleeve 4, a shaft sleeve 5, a flat key 6, an impeller 7, a pump shaft 8 and a non-driving side deep groove ball bearing 9; washer 10, round nut 11 and other parts. The rotor component is positioned by mainly depending on the position of the driving side deep groove ball bearing 3 through the elastic retainer ring 2 for the shaft and the shaft shoulder, then starting from the driving side deep groove ball bearing 3, sequentially determining the axial positions of the bearing retaining sleeve 4, the impeller 7, the shaft sleeve 8 and the non-driving side deep groove ball bearing 9 by taking the bearing as a reference, and finally locking the non-driving side deep groove ball bearing 9 through the round nut 11 and the washer 10 to complete the position positioning of the rotor component.
The utility model discloses a make the modification on the basis of original rotor part structure, as shown in fig. 3-4: the utility model provides a two suction pumps that drive side adopted cylindrical roller bearing include: the device comprises a drive side bearing, a bearing retaining sleeve 4, a shaft sleeve 5, a flat key 6, an impeller 7, a pump shaft 8, a non-drive side deep groove ball bearing 9, a gasket 10 and a round nut 11, wherein the impeller 7 is fixedly arranged on the pump shaft 8 through the flat key 6; the non-driving side deep groove ball bearing 9 is fixed on the non-driving side of the pump shaft 8 through a round nut 11, the shaft sleeve 5 is sleeved on the pump shaft 8 on two sides of the impeller 7, a bearing retaining sleeve 4 is arranged between the shaft sleeve 5 and the driving side bearing, the bearing retaining sleeve 4 is arranged between the shaft sleeve 5 and the non-driving side deep groove ball bearing 9, and the driving side bearing is a driving side cylindrical roller bearing 3'; the shaft sleeve 5 and the impeller 7 are matched in a spigot matching mode; the diameters of the bearing block sleeve 4 and the shaft sleeve 5 are smaller than the shaft diameter of the driving side bearing. A sealing ring is arranged between the bearing retaining sleeve 4 and the shaft sleeve 5.
The section of the matching part of the shaft sleeve 5 and the impeller 7 is an L-shaped step, and the impeller 7 is provided with a step-shaped spigot matched with the L-shaped step on the shaft sleeve 5.
The utility model discloses choose for use the deep groove ball bearing that cylindrical roller bearing replaced the drive side to use, cancel 2 location structure of circlip for the axle, increase drive side bearing department and the diameter of axle that the axle stretches, use the shaft shoulder as the benchmark, confirm bearing spacer 4 in proper order, axle sleeve 5, impeller 7, the axial position of non-drive side deep groove ball bearing 9, change the terminal surface cooperation of impeller and axle sleeve into the tang cooperation, lock non-drive side deep groove ball bearing 9 with round nut 11 and packing ring 10 at last, accomplish the position location of rotor part, a part has been reduced, the intensity of axle also obtains promoting.
The utility model provides a double entry pump rotor part additional strengthening, the diameter of axle of drive side bearing department has been increased on original rotor part basis, make it be greater than the diameter of axle of 4 departments of left bearing spacer, the diameter that the axle stretched has also been increaseed simultaneously, replace the deep groove ball bearing of drive side with cylindrical roller bearing, the adjustment has also been done to the structure of axle sleeve 5 and impeller 7, change its terminal surface cooperation into the tang cooperation, the intensity of axle has been strengthened, the bearing capacity of rotor part has been promoted, and simultaneously, the assembly size has also been guaranteed, parts such as original bearing box can directly continue to use.
The utility model discloses the part of canceling on original spare part basis is circlip 2 for the axle. The parts to be replaced are: the pump shaft 8, the driving side deep groove ball bearing 3 and the flat key 1. The parts for modifying the model on the basis of the original parts comprise: impeller 7 and shaft sleeve 5.
In the original structure, in order to install the circlip for the shaft, a groove needs to be dug on the shaft, the end face runout and the circular runout on the surface of the groove have specific requirements, during actual operation, the groove is easy to generate stress concentration, the strength of the shaft is reduced, the groove is cancelled in the new structure, the shaft diameter is increased, the diameter of the shaft extension is increased, and the specification of a key at the position of a coupler is increased, as shown in attached figures 2 and 4. In the original structure, the diameter of the bearing stop sleeve is larger than the shaft diameter of the bearing where the drive side bearing is installed (D1 is more than D2); in the novel structure, the diameter of the bearing blocking sleeve is smaller than the shaft diameter of the bearing where the driving side bearing is installed (D1 < D3). Thus, the processing amount is reduced, and the strength of the shaft is improved. In original structure, drive side bearing adopts drive side deep groove ball bearing 3, and the pump is when rated operating mode operation, because the radial force that structural feature received is than less, nevertheless in the actual motion in-process, also can often appear deviating from the condition, and the radial force that this moment pump received is great relatively. The novel structure replaces the deep groove ball bearing 3 on the driving side with the cylindrical roller bearing 3', the radial load bearing capacity is increased, and the strength of the pump shaft is further improved. In the original structure, the bearing 3 at the driving side is positioned by the retainer ring 2 and the shaft shoulder, the shaft sleeve and the impeller are in an end face matching structure, in the new structure, the axial diameter is increased to cause the positioning mode of rotor parts to change, the shaft shoulder can directly position the axial position of the bearing retaining sleeve 4, the matching mode of the shaft sleeve and the impeller is changed into spigot matching, and the non-driving side deep groove ball bearing 9 is installed after the parts such as the bearing retaining sleeve 4, the shaft sleeve 5, the impeller 7 and the like are installed. Therefore, the positioning reliability is ensured, and the operation reliability is improved.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.
Claims (4)
1. The utility model provides a double suction pump that cylindrical roller bearing was adopted to drive side which characterized in that: the double suction pump with the cylindrical roller bearing adopted at the driving side comprises: the impeller is fixedly arranged on the pump shaft through the flat key; the non-driving side bearing is fixed on the non-driving side of the pump shaft through a round nut, the shaft sleeve is sleeved on the pump shaft on two sides of the impeller, a bearing retaining sleeve is arranged between the shaft sleeve and the driving side bearing, a bearing retaining sleeve is arranged between the shaft sleeve and the non-driving side bearing, and the driving side bearing is a driving side cylindrical roller bearing; the matching of the shaft sleeve and the impeller adopts a spigot matching mode; the diameters of the bearing blocking sleeve and the shaft sleeve are smaller than the shaft diameter of the bearing on the installation driving side.
2. The double suction pump with a cylindrical roller bearing applied to the drive side according to claim 1, wherein: the non-driving side bearing is a non-driving side deep groove ball bearing.
3. The double suction pump with a cylindrical roller bearing applied to the drive side according to claim 1, wherein: and a sealing ring is arranged between the bearing blocking sleeve and the shaft sleeve.
4. The double suction pump with a cylindrical roller bearing applied to the drive side according to claim 1, wherein: the section of the matching part of the shaft sleeve and the impeller is an L-shaped step, and the impeller is provided with a step-shaped spigot matched with the L-shaped step on the shaft sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020310626.3U CN212155167U (en) | 2020-03-13 | 2020-03-13 | Double-suction pump with cylindrical roller bearing on driving side |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020310626.3U CN212155167U (en) | 2020-03-13 | 2020-03-13 | Double-suction pump with cylindrical roller bearing on driving side |
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| Publication Number | Publication Date |
|---|---|
| CN212155167U true CN212155167U (en) | 2020-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020310626.3U Active CN212155167U (en) | 2020-03-13 | 2020-03-13 | Double-suction pump with cylindrical roller bearing on driving side |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111396316A (en) * | 2020-03-13 | 2020-07-10 | 上海凯泉泵业（集团）有限公司 | Double-suction pump with cylindrical roller bearing on driving side |
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2020
- 2020-03-13 CN CN202020310626.3U patent/CN212155167U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111396316A (en) * | 2020-03-13 | 2020-07-10 | 上海凯泉泵业（集团）有限公司 | Double-suction pump with cylindrical roller bearing on driving side |
| CN111396316B (en) * | 2020-03-13 | 2024-05-17 | 上海凯泉泵业（集团）有限公司 | Double-suction pump with cylindrical roller bearing at driving side |
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