CN221220813U - Double suction pump with short bearing span - Google Patents
Double suction pump with short bearing span Download PDFInfo
- Publication number
- CN221220813U CN221220813U CN202322348718.7U CN202322348718U CN221220813U CN 221220813 U CN221220813 U CN 221220813U CN 202322348718 U CN202322348718 U CN 202322348718U CN 221220813 U CN221220813 U CN 221220813U
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- CN
- China
- Prior art keywords
- bearing
- pump
- mechanical seal
- pump shaft
- shaft
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- 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.)
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Links
- 210000004907 gland Anatomy 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims 4
- 238000009434 installation Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Abstract
The utility model provides a short double entry pump of bearing span, includes the pump case, wears to be equipped with the pump shaft in the pump case, installs the impeller through the key piece on the pump shaft, is provided with the sealing ring between impeller and the pump case, axle sleeve and bearing are installed in proper order to the pump shaft both sides, the casing both sides processing of pump case has the bearing installation mouth, and the bearing is in the bearing installation mouth, the bearing gland is installed to the pump case non-drive end, the pump case drive end is installed the mechanical seal gland, mechanical seal is equipped with in the mechanical seal gland to by the holding ring location of dress on the pump shaft. The utility model has the advantages of small bearing span, small bearing stress, long service life and more stable operation of the water pump; the structure is simple, compared with the conventional structure, one mechanical seal is reduced, the external dimension of the pump is small, and the cost is low; the bearing is maintenance-free, and the on-site maintenance is convenient; the utility model can be used for double suction pump products with different specifications and has strong applicability.
Description
Technical Field
The utility model relates to the technical field of water pumps, in particular to a double-suction pump with a short bearing span.
Background
The double-suction pump is a typical centrifugal pump, the application is very extensive, its impeller is made up of two back-to-back single-suction impellers, bear the load in the course of operation of the water pump through the bearing that both ends set up, as the Chinese patent of publication No. CN215256835U, the name is "double-suction pump", including the pump body and pump cover connected with pump body, the pump body encloses the flow chamber that becomes with pump cover and is equipped with spindle and impeller, the bearing frame that sets up on the outside pump body of the flow chamber is connected respectively to the spindle both ends, because the bearing frame sets up in the outside of the pump, the bearing span is very big, and the size of the bearing span has very big influence on bearing force and life, the bearing span is smaller, the bearing force is smaller, the life is longer, and the reliability of operation of the water pump is also greatly improved, therefore, it is very necessary to provide a double-suction pump that the bearing span is very little in practical engineering application.
Disclosure of utility model
The technical problem to be solved by the utility model is to provide the double-suction pump with short bearing span aiming at the defects of the prior art.
In order to solve the technical problems, the utility model adopts the following technical scheme:
The utility model provides a short double entry pump of bearing span, includes the pump case, wears to be equipped with the pump shaft in the pump case, installs the impeller through the key piece on the pump shaft, is provided with the sealing ring between impeller and the pump case, axle sleeve and bearing are installed in proper order to the pump shaft both sides, the casing both sides processing of pump case has the bearing installation mouth, and the bearing is in the bearing installation mouth, the bearing gland is installed to the pump case non-drive end, the pump case drive end is installed the mechanical seal gland, mechanical seal is equipped with in the mechanical seal gland to by the holding ring location of dress on the pump shaft.
Further, the bearing is located at the innermost side of the bearing mounting opening.
Furthermore, round nuts are arranged on two sides of the pump shaft, and lock the bearing through the round nuts.
Further, a water blocking ring is arranged on the pump shaft at the outer side of the mechanical seal gland.
Further, the bearing is a rolling bearing.
Furthermore, the bearing is made of stainless steel.
Compared with the prior art, the double-suction pump with the short bearing span has the following beneficial effects:
1. The bearing span is small, the bearing stress is small, the service life is long, and the water pump is more stable to operate;
2. The structure is simple, compared with the conventional structure, one mechanical seal is reduced, the external dimension of the pump is small, and the cost is low;
3. the bearing is maintenance-free, and the on-site maintenance is convenient;
4. The utility model can be used for double suction pump products with different specifications and has strong applicability.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
Wherein, 1, a pump shell, 2, a pump shaft, 3, an impeller, 4, a sealing ring, 5, a shaft sleeve, 6, a bearing, 7 and a bearing mounting opening, 8, round nuts, 9, a bearing gland, 10, a mechanical seal gland, 11, a mechanical seal, 12, a positioning ring, 13 and a water blocking ring.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below.
As shown in FIG. 1, a double suction pump with a short bearing span comprises a pump shell 1, a pump shaft 2 is arranged in the pump shell 1 in a penetrating manner, an impeller 3 is arranged on the pump shaft 2 through a key block, a sealing ring 4 is arranged between the impeller 3 and the pump shell 1, a shaft sleeve 5 and a bearing 6 are sequentially arranged on two sides of the pump shaft 2, in the embodiment, bearing mounting openings 7 are formed on two sides of the pump shell 1, the bearing 6 is arranged in the bearing mounting openings 7, and compared with the original double suction pump structure, the span of the bearing is shortened by 30% -40%, and the running reliability and stability of the water pump are improved.
The two sides of the pump shaft 2 are provided with round nuts 8, the round nuts 8 lock bearings 6, and the impeller 3, the shaft sleeve 5 and the bearings 6 are fixed together, a bearing gland 9 is arranged at the non-driving end of the pump shell 1 and used for positioning the whole rotor, an organic sealing gland 10 is arranged at the driving end of the pump shell 1, a mechanical seal 11 is arranged in the organic sealing gland 10 and positioned by a positioning ring 12 arranged on the pump shaft 2, and a water blocking ring 13 is arranged on the pump shaft outside the organic sealing gland 10 to block media sprayed after the mechanical seal fails.
In this embodiment, the bearing 6 is a rolling bearing, the bearing 6 is made of stainless steel, and is filled with a polymer adsorbing saturated lubricating oil, so that the bearing 6 can be used underwater, lubrication is maintenance-free, and compared with a conventional double-suction pump structure, the non-driving end can be reduced by one mechanical seal, and the bearing 6 can be arranged at the innermost part of a pump shell, so that the double-suction pump has a small bearing span.
The utility model is not limited to the embodiments described, but a person skilled in the art may make modifications or changes without departing from the spirit of the utility model, i.e. the scope of the disclosure, and the scope of the utility model is defined by the claims.
Claims (5)
1. The utility model provides a short double entry pump of bearing span, includes the pump case, wears to be equipped with the pump shaft in the pump case, installs the impeller through the key piece on the pump shaft, is provided with the sealing ring between impeller and the pump case, axle sleeve and bearing, its characterized in that are installed in proper order to the pump shaft both sides: the two sides of the shell of the pump shell are provided with bearing mounting openings, the bearings are positioned in the bearing mounting openings, the non-driving end of the pump shell is provided with a bearing gland, the driving end of the pump shell is provided with a mechanical seal gland, and the mechanical seal gland is internally provided with a mechanical seal and is positioned by a positioning ring arranged on a pump shaft;
The bearing is a rolling bearing.
2. A short bearing span dual suction pump as in claim 1 wherein: the bearing is positioned at the innermost side of the bearing mounting port.
3. A short bearing span dual suction pump as in claim 1 wherein: round nuts are arranged on two sides of the pump shaft, and lock the bearing through the round nuts.
4. A short bearing span dual suction pump as in claim 1 wherein: and a water blocking ring is arranged on the pump shaft at the outer side of the mechanical seal gland.
5. A short bearing span dual suction pump as in claim 1 wherein: the bearing is made of stainless steel.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221220813U true CN221220813U (en) | 2024-06-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |