CN204126949U - A kind of impeller port ring structure - Google Patents
A kind of impeller port ring structure Download PDFInfo
- Publication number
- CN204126949U CN204126949U CN201420508245.0U CN201420508245U CN204126949U CN 204126949 U CN204126949 U CN 204126949U CN 201420508245 U CN201420508245 U CN 201420508245U CN 204126949 U CN204126949 U CN 204126949U
- Authority
- CN
- China
- Prior art keywords
- impeller
- choma
- ring
- ring cowling
- face
- Prior art date
- 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.)
- Expired - Lifetime
Links
- 230000014759 maintenance of location Effects 0.000 claims description 36
- 239000004809 Teflon Substances 0.000 claims description 7
- 229920006362 Teflon® Polymers 0.000 claims description 7
- 238000007789 sealing Methods 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 8
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a kind of impeller port ring structure, comprise pump chamber, impeller and guide vane assembly, described impeller and guide vane assembly are equipped with at pump chamber inner, described impeller comprises suction port end and wheel body, described suction port end excircle is provided with choma and choma lid, described choma lid comprises ring cowling end face and ring cowling body, forms wheel rotation chamber between described ring cowling body and guide vane assembly, and it is inner that described impeller is arranged on wheel rotation chamber.This impeller port ring structure, effectively can reduce leakage rate, good sealing effect, cavity space is less, effectively improve the working efficiency of pump, and this impeller port ring structure is arranged for each impeller, wear resistant corrosion resistant is high temperature resistant, long service life, structure is simple, and convenient maintenance and replacement, cost is low.
Description
Technical field
The utility model relates to centrifugal pump technical field, relates in particular to a kind of impeller port ring structure.
Background technique
Centrifugal pump in use, because the sealing between traditional centrifugal pump impeller and the pump housing adopts clearance seal, gap sealed the larger difficulty of existence is set, excesssive gap and the too small normal work being all unfavorable for centrifugal pump, in order to ensure that centrifugal pump is not engaged, generally all can adopt comparatively wide arc gap, and comparatively wide arc gap liquid easily leaks, the working efficiency of pump is low, is unfavorable for energy conservation very much.In order to solve the problem, also have the technological scheme improved this leakage in prior art, some adopts labyrinth seal structure to seal, some adopts increase seal ring to seal, these schemes existing mostly complex structure, be unfavorable for manufacturing, cost is higher.
Chinese patent literature (the day for announcing: on February 23rd, 2011, notification number: CN201751587U) disclose a kind of sealing device for centrifugal pump impeller wear ring, comprise housing choma and impeller port ring, housing choma comprises the straight seal section of housing choma and housing choma labyrinth seal section that are positioned at different step surface, impeller port ring comprises the straight seal section of the impeller port ring being positioned at different step surface and impeller port ring labyrinth seal section, the straight seal section of housing choma and impeller port ring labyrinth seal section coordinate formation labyrinth seal, housing choma labyrinth seal section and the straight seal section of impeller port ring coordinate formation labyrinth seal.
Technique scheme is exactly the technical problem that centrifugal pump mouth ring leakage rate is large, volumetric efficiency is on the low side in order to solve, and have employed labyrinth seal structure.But this knot processed complex, cost is higher.
Model utility content
The purpose of this utility model there is gap to solve between existing centrifugal pump impeller and the pump housing, liquid easily leaks, efficiency is low, the problem that cost is high, and provide a kind of structure simple, easy to make, working efficiency is high, effectively can to solve between centrifugal pump impeller and the pump housing because of excesssive gap, cavity external and internal pressure difference is large and the impeller port ring structure of the large problem of leakage that causes.
The utility model realizes the technological scheme that its technical purpose adopts: a kind of impeller port ring structure, comprise pump chamber, impeller and guide vane assembly, described impeller and guide vane assembly are equipped with at pump chamber inner, described impeller comprises suction port end and wheel body, described suction port end excircle is provided with choma and choma lid, described choma lid comprises ring cowling end face and ring cowling body, form wheel rotation chamber between described ring cowling body and guide vane assembly, it is inner that described impeller is arranged on wheel rotation chamber.This impeller port ring structure, by arranging choma lid and choma on the outer peripheral surface of the suction port end of impeller, wheel rotation chamber is formed between choma lid and guide vane assembly, original pump chamber is separated into less wheel rotation chamber, such structure makes the liquid in pump chamber be flowed by impeller in less wheel rotation chamber, the working efficiency of effective raising pump, simultaneously, by being arranged on the choma on suction eye end, realize the sealing to wheel rotation chamber, this impeller port ring structure effectively reduces the leak of liquid amount because cavity inside and outside differential pressure causes, effectively improve the working efficiency of pump.And this impeller port ring structure is arranged for each impeller, structure is simple, and operation and maintenance is convenient, and cost is low.
As preferably, described choma covers and ring cowling end face is provided with at least a slice retention tab, the outer ring surface of described choma corresponds to retention tab and is provided with at least one retention groove.In order to protect the sealing effect of choma and choma lid further; cover at choma and be provided with retention tab; choma is provided with retention groove, and retention tab is arranged in retention groove the control of the relative movement amount realizing and circumference radial to choma, ensure that the sealing effect of choma and choma lid.
As preferably, the external diameter of described ring cowling end face is less than the external diameter of ring cowling body, be provided with L-type cambered surface between described ring cowling end face and ring cowling body, both sides and the ring cowling end face joint of described retention tab are respectively arranged with U-shaped fluting, and described retention tab and ring cowling end face are wholely set.The external diameter of ring cowling end face is less than the external diameter of ring cowling body, L-type cambered surface is provided with between ring cowling end face and ring cowling body, such structure facilitates the formation in wheel rotation chamber, simultaneously also be conducive to choma with choma lid realizes sealing, L-type globoidal structure, in impeller working procedure, is understood and be produced relative bullet amount with the work of pump, this choma structure optimal seal state can be ensured, retention tab is by forming with the bending of ring cowling end face integrated punching, easy to operate, makes simply and good sealing effect.
As preferably, described choma is teflon ring.Choma adopts teflon ring and adopts said structure, has the resistant to elevated temperatures feature of wear resistant corrosion resistant, coordinate and realize sealing, effectively reduce leakage rate, and this choma cost is low with choma lid, and it is convenient to change.
As preferably, the height of retention tab is less than the wall thickness of choma, and the width of described retention tab is less than the groove width of retention groove.The said structure of retention tab is to limit choma in circumference with diametrically move, also make choma have a small amount of motion in circumference with radial, realize motive sealing and coordinate.
The utility model has beneficial effect to be: this impeller port ring structure, effectively can reduce the leakage rate because cavity inside and outside differential pressure causes, good sealing effect, cavity space is less, effectively improve the working efficiency of pump, and this impeller port ring structure is arranged for each impeller, and choma adopts teflon ring, and wear resistant corrosion resistant is high temperature resistant, long service life, structure is simple, and convenient maintenance and replacement, cost is low.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the utility model impeller port ring structure;
Fig. 2 is a kind of structural representation of choma in the utility model;
Fig. 3 is the plan view of choma in Fig. 2;
Fig. 4 is a kind of structural representation of choma lid in the utility model;
Fig. 5 is the left view of choma lid in Fig. 4;
In figure: 1, pump chamber, 2, impeller, 3, guide vane assembly, 4, suction port end, 5, wheel body, 6, choma, 7, choma lid, 8, ring cowling end face, 9, ring cowling body, 10, wheel rotation chamber, 11, retention tab, 12, retention groove, 13, L-type cambered surface, 14, U-shaped fluting.
Embodiment
Also by reference to the accompanying drawings the technical solution of the utility model is described in further detail below by specific embodiment.
Embodiment 1:
In the embodiment shown in fig. 1, a kind of impeller port ring structure, comprise pump chamber 1, impeller 2 and guide vane assembly 3, impeller 2 and guide vane assembly 3 are equipped with at pump chamber 1 inner, impeller 2 comprises suction port end 4 and wheel body 5, suction port end 4 excircle is provided with choma 6 and choma lid 7, choma 6 is teflon ring (see figure 2), choma lid 12 is stainless steel component, choma lid 7 comprises ring cowling end face 8 and ring cowling body 9, the external diameter of ring cowling end face 8 is less than the external diameter of ring cowling body 9, L-type cambered surface 13 is provided with between ring cowling end face 8 and ring cowling body 9, wheel rotation chamber 10 is formed between ring cowling body 9 and guide vane assembly 3, it is inner that impeller 2 is arranged on wheel rotation chamber 10.Choma lid 7 is provided with three retention tab 11(perpendicular to ring cowling end face 8 and sees Fig. 4), the both sides of retention tab 11 and ring cowling end face 8 joint are respectively arranged with the U-shaped 14(that slots and see Fig. 5), retention tab 11 and ring cowling end face 8 are wholely set.The outer ring surface of choma 6 is provided with three retention groove 12(corresponding to retention tab 11 and sees Fig. 3).The height of retention tab 11 is less than the wall thickness of choma 6, and the width of retention tab 11 is less than the groove width of retention groove 12.
This impeller port ring structure, the outer peripheral surface of the suction port end 4 of each impeller 2 is provided with choma lid 7 and choma 6, wheel rotation chamber 10 is formed between the ring cowling body 9 of choma lid 7 and guide vane assembly 3, it is inner that impeller 2 is arranged on wheel rotation chamber 10, pump chamber is separated into the multiple less cavity corresponding to impeller by wheel rotation chamber 10, because wheel rotation chamber 10 cavity is little, be conducive to the quick flowing of liquid, effectively improve the working efficiency of pump.In order to increase sealing effect further, the excircle of the suction port end 4 of impeller 2 is provided with teflon choma 6, choma 6 and choma lid 7 are equipped with and realize good sealing function, on choma lid 7, be provided with retention tab 11 simultaneously, choma 6 is provided with retention groove 12, retention tab 11 is arranged in retention groove 12 control of the relative movement amount realizing and circumference radial to choma, ensure that the sealing effect of choma 6 and choma lid 7.
This impeller port ring structure, effectively can reduce the leakage rate because cavity inside and outside differential pressure causes, good sealing effect, cavity space is less, effectively improve the working efficiency of pump, and this impeller port ring structure is arranged for each impeller, and choma adopts teflon ring, and wear resistant corrosion resistant is high temperature resistant, long service life, structure is simple, and convenient maintenance and replacement, cost is low.
Claims (5)
1. an impeller port ring structure, comprise pump chamber (1), impeller (2) and guide vane assembly (3), described impeller (2) and guide vane assembly (3) are equipped with at pump chamber (1) inner, described impeller (2) comprises suction port end (4) and wheel body (5), it is characterized in that: described suction port end (4) excircle is provided with choma (6) and choma lid (7), described choma lid (7) comprises ring cowling end face (8) and ring cowling body (9), wheel rotation chamber (10) is formed between described ring cowling body (9) and guide vane assembly (3), it is inner that described impeller (2) is arranged on wheel rotation chamber (10).
2. a kind of impeller port ring structure according to claim 1, it is characterized in that: described choma lid (7) is provided with at least a slice retention tab (11) perpendicular to ring cowling end face (8), the outer ring surface of described choma (6) corresponds to retention tab (11) and be provided with at least one retention groove (12).
3. a kind of impeller port ring structure according to claim 2, it is characterized in that: the external diameter of described ring cowling end face (8) is less than the external diameter of ring cowling body (9), L-type cambered surface (13) is provided with between described ring cowling end face (8) and ring cowling body (9), both sides and ring cowling end face (8) joint of described retention tab (11) are respectively arranged with U-shaped fluting (14), and described retention tab (11) and ring cowling end face (8) are wholely set.
4. a kind of impeller port ring structure according to claim 2, is characterized in that: described choma (6) is teflon ring.
5. a kind of impeller port ring structure according to Claims 2 or 3 or 4, is characterized in that: the height of retention tab (11) is less than the wall thickness of choma (6), and the width of described retention tab (11) is less than the groove width of retention groove (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420508245.0U CN204126949U (en) | 2014-09-05 | 2014-09-05 | A kind of impeller port ring structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420508245.0U CN204126949U (en) | 2014-09-05 | 2014-09-05 | A kind of impeller port ring structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204126949U true CN204126949U (en) | 2015-01-28 |
Family
ID=52383308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420508245.0U Expired - Lifetime CN204126949U (en) | 2014-09-05 | 2014-09-05 | A kind of impeller port ring structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204126949U (en) |
-
2014
- 2014-09-05 CN CN201420508245.0U patent/CN204126949U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 311100 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 |
Granted publication date: 20150128 |
|
| CX01 | Expiry of patent term |