CN215170786U - Small-flow impeller pump - Google Patents
Small-flow impeller pump Download PDFInfo
- Publication number
- CN215170786U CN215170786U CN202022913684.8U CN202022913684U CN215170786U CN 215170786 U CN215170786 U CN 215170786U CN 202022913684 U CN202022913684 U CN 202022913684U CN 215170786 U CN215170786 U CN 215170786U
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- impeller
- main shaft
- pump body
- pump
- cover
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Abstract
A small flow impeller pump comprises a pump body, an impeller cover, an impeller, a main shaft and a bracket; the impeller cover is fixedly connected to the pump body and forms a cavity with the pump body, the impeller is positioned in the cavity, and the impeller cover is provided with a water inlet and a water outlet; the support is fixedly connected to the impeller cover and located at one end, far away from the impeller cover, of the pump body, the main shaft sequentially penetrates through the support and the pump body and then extends into the cavity, bearings are arranged at two ends of the support respectively, outer rings of the two bearings are fixedly connected to the support, inner rings of the two bearings are fixedly connected with the main shaft, and the impeller is fixedly connected to the main shaft. The main shaft is arranged on the bracket through the bearing, so that the bearing does not need to be arranged in the pump body, the bearing is prevented from being corroded by liquid when the main shaft is arranged in the pump body on the premise of ensuring that the main shaft can flexibly rotate, and the stability of the impeller pump is improved; meanwhile, the sealing performance of the matching part of the main shaft and the pump body can be ensured, and the structure of the sealing part is simplified.
Description
Technical Field
The utility model relates to a pump technical field, concretely relates to low discharge impeller pump.
Background
The impeller pump of small flow is widely used in refrigeration system, heating equipment, it rotates through the main shaft belt wheel impeller, make the liquid produce the centrifugal force, achieve the goal of transporting liquid, the present impeller pump includes the pump casing, install impeller cover, and main shaft in one end of the pump casing, the pump casing and impeller cover enclose the impeller cavity used for placing the impeller, form another cavity chamber inside the pump casing at the same time, the main shaft penetrates the cavity chamber of the pump casing and stretches into the impeller cavity and connects with impeller, and the main shaft cooperates with rotation of the pump casing through the bearing, the main shaft penetrates and forms the interval between pump casing and the part of the impeller cavity, and set up the bearing on one side close to the pump casing in this interval, thus, the seal structure of main shaft and pump casing in this position is comparatively complicated, and the liquid in the impeller cavity can enter the bearing interval through the above-mentioned interval, cause the liquid leakage, cause the corrosion to the lubricating oil in the bearing at the same time, affecting the normal operation of the bearing.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a small flow impeller pump, it can avoid liquid leakage and lead to the fact the influence to the bearing, improves the stability of impeller pump work to prior art not enough.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a small flow impeller pump comprises a pump body, an impeller cover, an impeller, a main shaft and a bracket;
the impeller cover is fixedly connected to the pump body and forms a cavity with the pump body, the impeller is positioned in the cavity, and the impeller cover is provided with a water inlet and a water outlet;
the support is fixedly connected to the impeller cover and located at one end, far away from the impeller cover, of the pump body, the main shaft sequentially penetrates through the support and the pump body and then extends into the cavity, bearings are arranged at two ends of the support respectively, outer rings of the two bearings are fixedly connected to the support, inner rings of the two bearings are fixedly connected with the main shaft, and the impeller is fixedly connected to the main shaft.
Two end parts of the bracket are respectively fixed with a bearing cover, the two bearing covers are respectively covered on the outer sides of the two bearings, the bearing covers are abutted against the outer ring of the bearing positioned on the inner side of the bearing, and the inner ring of the bearing is abutted against a shaft shoulder arranged on the main shaft.
The bracket is provided with a connecting flange which is fixedly connected with the impeller cover through bolts.
The pump body is provided with a positioning disk which extends outwards along the radial direction of the pump body, the surface of the connecting flange facing the impeller cover is provided with a positioning groove, the positioning disk is provided with an annular convex rib, the annular convex rib is embedded in the positioning groove, the periphery of the annular convex rib abuts against the peripheral side wall of the positioning groove, the inner edge of the impeller cover is provided with a limiting surface, and the annular convex rib is clamped between the limiting surface and the bottom surface of the positioning groove.
A sealing ring is clamped between the limiting surface and the annular convex rib.
The outside of the bracket is also provided with a hanging ring.
The beneficial effects of the utility model reside in that:
the main shaft is arranged on the bracket through the bearing, so that the bearing does not need to be arranged in the pump body, the bearing is prevented from being corroded by liquid when the main shaft is arranged in the pump body on the premise of ensuring that the main shaft can flexibly rotate, and the stability of the impeller pump is improved; meanwhile, the sealing performance of the matching part of the main shaft and the pump body can be ensured, and the structure of the sealing part is simplified.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a cross-sectional view of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments:
as shown in fig. 1 and 2, for the present invention, a downflow impeller pump comprises a pump body 10, an impeller cover 20, an impeller 30, a main shaft 40 and a bracket 50, wherein the impeller cover 20 is located at one end of the pump body 10 and is fixedly matched with the pump body 10, the impeller cover 20 and the pump body 10 jointly enclose a chamber, the impeller 30 is located in the chamber, and the impeller cover 20 is provided with a water inlet 21 axially consistent with the impeller 30 and a water outlet 22 radially consistent with the impeller 30; the bracket 50 is fixedly connected with the impeller cover 20 and located at one end of the pump body 10 far away from the impeller cover 20, the main shaft 40 sequentially passes through the bracket 50 and the pump body 10 and then extends into the cavity, and the end of the main shaft 40 is connected with the impeller 30 in the cavity, so that the impeller 30 can be driven to rotate by the main shaft 40, the two ends of the bracket 50 are respectively provided with a bearing 51 and a bearing 52, the main shaft 40 and the bracket 50 are in pivot fit through the bearing 51 and the bearing 52, specifically, the outer rings of the bearing 51 and the bearing 52 are fixed on the inner wall of the bracket 50, and the inner ring is in fixed fit with the main shaft 40.
The utility model discloses install main shaft 40 on support 50 through bearing 51, bearing 52 to need not to set up the bearing inside the pump body 10, guaranteeing under the main shaft 40 can nimble pivoted prerequisite, avoid setting up the bearing and receive the erosion of liquid in the pump body 10, simultaneously, main shaft 40 can obtain guaranteeing with the leakproofness of the cooperation department of the pump body 10, has simplified the structure at sealed position.
The utility model discloses in, through a bolt fastening bearing cap 511 and bearing cap 512 respectively at the both ends of support 50, bearing cap 511 supports and pushes up in the outer lane outside of bearing 51, is provided with on the main shaft 40 to support and pushes up in the inboard shaft shoulder of bearing 51 inner circle, and is same, and bearing cap 512 supports and pushes up in the outer lane outside of bearing 52, is provided with on the main shaft 40 to support and pushes up in the inboard shaft shoulder of bearing 52 inner circle.
In a preferred embodiment, a connecting flange 53 is provided on the bracket 50, the connecting flange 53 is fixedly connected with the impeller cover 20 by bolts, further, a positioning disk 11 extending radially outward is provided on the pump body 10, a ring-shaped rib 12 is provided at the edge of the positioning disk 11, a positioning groove 531 is provided on the surface of the connecting flange 53 facing the impeller cover 20, the ring-shaped rib 12 is of a size corresponding to the positioning groove 531, and is embedded in the positioning groove 531, and the peripheral edge of the ring-shaped rib 12 abuts against the sidewall of the positioning groove 531, a stopper surface is provided on the inner edge of the impeller cover 20, the ring-shaped rib 12 is clamped between the stopper surface and the bottom surface of the positioning groove 531, so that when the bolts for fixing the connecting flange 53 and the impeller cover 20 are tightened, the ring-shaped rib 12 is clamped between the connecting flange 53 and the impeller cover 20, thereby gradually fixing the pump body 10 on the impeller cover 20 on the bracket 50, and sealingly engages the pump body 10 with the impeller cover 20. In addition, a sealing ring is further disposed between the limiting surface and the annular rib 12, so that when the connecting flange 53 and the impeller cover 20 are clamped tightly, the sealing ring between the limiting surface and the annular rib 12 is compressed, and the matching part of the impeller cover 20 and the pump body 10 is sufficiently sealed. During installation, the main shaft 40 and the bracket 50 are assembled together to form an assembly, the main shaft 40 is matched with the pump body, the impeller 30 is installed on the main shaft 40, finally, the impeller cover 20 is fixed with the bracket 50, and the pump body 10 and the impeller cover 20 are kept fixed and in sealing fit by utilizing the matching structure of the bracket 50 and the impeller cover 20.
In order to facilitate the transfer of the vane pump, the present invention further comprises a hanging ring 54 outside the bracket 50, and the base 23 of the vane pump is disposed on the vane cover 20.
The foregoing is merely a preferred embodiment of the present invention, and further details of the present invention are described in conjunction with specific preferred embodiments, which should not be construed as limiting the practice of the invention to these descriptions. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A small-flow impeller pump is characterized by comprising a pump body, an impeller cover, an impeller, a main shaft and a bracket;
the impeller cover is fixedly connected to the pump body and forms a cavity with the pump body, the impeller is positioned in the cavity, and the impeller cover is provided with a water inlet and a water outlet;
the support is fixedly connected to the impeller cover and located at one end, far away from the impeller cover, of the pump body, the main shaft sequentially penetrates through the support and the pump body and then extends into the cavity, bearings are arranged at two ends of the support respectively, outer rings of the two bearings are fixedly connected to the support, inner rings of the two bearings are fixedly connected with the main shaft, and the impeller is fixedly connected to the main shaft.
2. The small-flow vane pump as claimed in claim 1, wherein a bearing cap is fixed to each of both ends of the bracket, the bearing caps are respectively capped on the outer sides of the bearings, and abut on the outer rings of the bearings located on the inner sides thereof, and the inner rings of the bearings abut on a shoulder provided on the main shaft.
3. The small-flow vane pump of claim 1, wherein the bracket is provided with a coupling flange, and the coupling flange is fixedly coupled to the vane cover by bolts.
4. The small-flow vane pump according to claim 3, wherein the pump body is provided with a positioning disk extending radially outward therefrom, the attachment flange is provided with a positioning groove on a surface thereof facing the vane cover, the positioning disk is provided with an annular rib which is fitted in the positioning groove and has a peripheral edge abutting against a side wall of the peripheral edge of the positioning groove, the inner edge of the vane cover is provided with a stopper surface, and the annular rib is held between the stopper surface and a bottom surface of the positioning groove.
5. The small-flow impeller pump according to claim 4, wherein a seal ring is interposed between the stopper surface and the annular rib.
6. The small-flow impeller pump according to claim 1, wherein the bracket is further provided at an outer portion thereof with a hanging ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022913684.8U CN215170786U (en) | 2020-12-06 | 2020-12-06 | Small-flow impeller pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022913684.8U CN215170786U (en) | 2020-12-06 | 2020-12-06 | Small-flow impeller pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215170786U true CN215170786U (en) | 2021-12-14 |
Family
ID=79378187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022913684.8U Active CN215170786U (en) | 2020-12-06 | 2020-12-06 | Small-flow impeller pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215170786U (en) |
-
2020
- 2020-12-06 CN CN202022913684.8U patent/CN215170786U/en active Active
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