CN207647854U - The centrifugal pump of grooved wall surface - Google Patents

The centrifugal pump of grooved wall surface Download PDF

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Publication number
CN207647854U
CN207647854U CN201721651441.3U CN201721651441U CN207647854U CN 207647854 U CN207647854 U CN 207647854U CN 201721651441 U CN201721651441 U CN 201721651441U CN 207647854 U CN207647854 U CN 207647854U
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China
Prior art keywords
conical pipe
grooved
pump
triangular groove
centrifugal pump
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Active
Application number
CN201721651441.3U
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Chinese (zh)
Inventor
冯建军
吉龙娟
景信信
朱国俊
吴广宽
罗兴锜
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Suzhou Xili Technology Services Ltd.
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Xian University of Technology
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Priority to CN201721651441.3U priority Critical patent/CN207647854U/en
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Abstract

The utility model discloses a kind of centrifugal pumps of grooved wall surface, including hollow pump case, one end of pump case is provided with conical pipe, the small-caliber end of conical pipe is connect with pump case, the madial wall of conical pipe is axially disposed, and to have triangular groove, triangular groove include the concave surface on arc-shaped convex surface and flat type, and impeller is provided in pump case, the center of impeller is provided with transmission shaft along the relative direction of conical pipe, and the other end of transmission shaft is connected by the main shaft of shaft coupling and motor;The utility model centrifugal pump shaft is effectively increased the axial velocity of centrifugal blade entrance to grooving techniques, impeller inlet is inhibited to prewhirl, the centrifugal blade angle of attack is improved, reflux and the generation of vortex tape are inhibited, centrifugal pump hump zone efficiency is improved while eliminating centrifugal pump hump phenomenon.

Description

The centrifugal pump of grooved wall surface
Technical field
The utility model belongs to fluid machines technical field, and in particular to a kind of centrifugal pump of grooved wall surface.
Background technology
For traditional centrifugal pump, under low flow rate condition, runner bucket interchannel will appear stall whirlpool, and interior flow field is opened Beginning becomes disorderly;By the performance variation law to centrifugal pump internal flow characteristics and centrifugal pump analysis shows due to impeller into Mouth swirling flow and blade surface separation stream cause the Severe blockage of runner, lead to the notable of centrifugal pump stall region head curve Decline and the efficiency of small flow area reduces so that the unstable hump phenomenon of centrifugal pump occurs, and influences unit efficiency and causes A large amount of energy consumptions, the more serious safety in operation that can influence unit.
Utility model content
The purpose of this utility model is to provide a kind of centrifugal pump of grooved wall surface, solve conventional centrifugal pump inefficiency, And the problem that energy consumption is big.
The utility model is the technical scheme adopted is that a kind of centrifugal pump of grooved wall surface, including hollow pump case, pump case One end be provided with conical pipe, the small-caliber end of conical pipe is connect with pump case, and the madial wall of conical pipe is axially disposed triangle Connected in star, triangular groove include the concave surface on arc-shaped convex surface and flat type, and impeller, the center edge of impeller are provided in pump case The relative direction of conical pipe is provided with transmission shaft, and the other end of transmission shaft is connected by the main shaft of shaft coupling and motor.
The utility model is also characterized by:
The small-caliber end of conical pipe is connect by flange with pump case, and the heavy caliber end of conical pipe is also equipped with flange.
The length of conical pipe is 0.7~0.8 times of impeller diameter.
The intersection point that two concave surfaces of triangular groove are formed to convex surface tangent line air line distance for impeller diameter 0.02~ 0.03 times.
Triangular groove is on the basis of the heavy caliber end of conical pipe, small-caliber end 2mm of the triangular groove apart from conical pipe ~3mm.
The angle that two concave surfaces of triangular groove are formed is 55 °~60 °.
The quantity of triangular groove is 30~40.
The utility model has the beneficial effects that:The centrifugation pump suction chamber of the utility model in conical pipe internal face by processing To vee gutter, this vee gutter can stop and weaken suction chamber close to side-walls fluid larger rotational flow shaft, The vortex intensity of main flow area is set to be significantly suppressed;Axially grooved technology is effectively increased the axial direction of centrifugal blade entrance Speed inhibits impeller inlet to prewhirl, and improves the centrifugal blade angle of attack, inhibits reflux and the generation of vortex tape, is centrifuged eliminating Centrifugal pump hump zone efficiency is improved while pumping hump phenomenon, also ensures that entire unit being capable of safe operation.
Description of the drawings
Fig. 1 is a kind of centrifugal pump structure schematic diagram of grooved wall surface of the utility model;
Fig. 2 is the triangular groove structural schematic diagram in a kind of centrifugal pump of grooved wall surface of the utility model.
In figure, 1. conical pipes, 2. triangular grooves, 3. convex surfaces, 4. concave surfaces, 5. flanges, 6. impellers, 7. transmission shafts, 8. Axis device, 9. motors, 10. pipelines, 11. pump cases.
Specific implementation mode
The utility model is described in detail with reference to the accompanying drawings and detailed description.
A kind of centrifugal pump of grooved wall surface of the utility model, as shown in Figure 1, including hollow volute pump case 11, pump case 11 One end be provided with conical pipe 1, the small-caliber end of conical pipe 1 is connect by flange 5 with pump case 11;As shown in Fig. 2, conical pipe 1 Madial wall it is axially disposed there is triangular groove 2, triangular groove 2 to be evenly arranged along the circumferencial direction of conical pipe, triangle Groove 2 includes the concave surface 4 on arc-shaped convex surface 3 and flat type, and 1 heavy caliber end of conical pipe is also equipped with flange 5, conical pipe 1 Heavy caliber end is connect by flange 5 with pipeline 10;Impeller 6 is provided in pump case 11, the center of impeller 6 is along 1 contra of conical pipe To transmission shaft 7 is provided with, the other end of transmission shaft 7 is connect by shaft coupling 8 with the main shaft of motor 9;The length of conical pipe 1 is leaf Take turns 6 diameters 0.7~0.8 times;One end of triangular groove 2 on the basis of the heavy caliber end of conical pipe 1, triangular groove 2 Small-caliber end 2mm~3mm of the other end apart from conical pipe 1, the intersection point that two concave surfaces 4 of triangular groove 2 are formed are cut to convex surface The air line distance of line is 0.02~0.03 times of impeller diameter;The angle that two concave surfaces 4 of triangular groove 2 are formed is 55 °~ 60°;And the quantity of triangular groove 2 is 30~40.
A kind of centrifugal pump of grooved wall surface of the utility model, vee gutter 2 can stop and weaken close to 1 inside of conical pipe The rotational flow of fluid at wall, makes the vortex intensity of main flow area be significantly suppressed;Axially grooved technology be effectively increased from Axial velocity at 6 vane inlet of heart pump impeller inhibits impeller inlet to prewhirl, and improves the centrifugal blade angle of attack, to inhibit back The generation of stream and vortex tape eliminates centrifugal pump hump phenomenon, improves centrifugal pump hump zone efficiency.
By the above-mentioned means, a kind of centrifugal pump of grooved wall surface of the utility model, axial in 1 inside of conical pipe of centrifugal pump Triangular groove 2 is set, eliminates centrifugal pump and unstable hump phenomenon occurs, centrifugation is substantially increased while reducing energy consumption The efficiency of pump assembly keeps centrifugal pump group operation more safe and reliable.

Claims (7)

1. the centrifugal pump of grooved wall surface, which is characterized in that including hollow pump case (11), one end of the pump case (11) is provided with The small-caliber end of conical pipe (1), the conical pipe (1) is connect with the pump case (11), and the madial wall of the conical pipe (1) is along axis To triangular groove (2) is provided with, the triangular groove (2) includes the concave surface (4) on arc-shaped convex surface (3) and flat type, It is provided with impeller (6) in the pump case (11), the center of the impeller (6) is provided with along the relative direction of the conical pipe (1) The other end of transmission shaft (7), the transmission shaft (7) is connect by shaft coupling (8) with the main shaft of motor (9).
2. the centrifugal pump of grooved wall surface according to claim 1, which is characterized in that the small-caliber end of the conical pipe (1) It is connect with the pump case (11) by flange (5), the heavy caliber end of the conical pipe is also equipped with flange (5).
3. the centrifugal pump of grooved wall surface according to claim 1, which is characterized in that the length of the conical pipe (1) is institute State impeller (6) diameter 0.7~0.8 times.
4. the centrifugation pump chamber of grooved wall surface according to claim 1, which is characterized in that the two of the triangular groove (2) The air line distance of the intersection point that a concave surface (4) is formed to the convex surface tangent line is 0.02~0.03 times of the impeller diameter.
5. the centrifugal pump of grooved wall surface according to claim 1, which is characterized in that the triangular groove (2) is with described On the basis of the heavy caliber end of conical pipe (1), small-caliber end 2mm of the triangular groove (2) apart from the conical pipe (1)~ 3mm。
6. the centrifugal pump of grooved wall surface according to claim 1, which is characterized in that two of the triangular groove (2) The angle that concave surface (4) is formed is 55 °~60 °.
7. the centrifugal pump of grooved wall surface according to claim 1, which is characterized in that the quantity of the triangular groove (2) It is 30~40.
CN201721651441.3U 2017-12-01 2017-12-01 The centrifugal pump of grooved wall surface Active CN207647854U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721651441.3U CN207647854U (en) 2017-12-01 2017-12-01 The centrifugal pump of grooved wall surface

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721651441.3U CN207647854U (en) 2017-12-01 2017-12-01 The centrifugal pump of grooved wall surface

Publications (1)

Publication Number Publication Date
CN207647854U true CN207647854U (en) 2018-07-24

Family

ID=62882544

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721651441.3U Active CN207647854U (en) 2017-12-01 2017-12-01 The centrifugal pump of grooved wall surface

Country Status (1)

Country Link
CN (1) CN207647854U (en)

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Effective date of registration: 20201106

Address after: No.2358, east side of Chang'an Road, Wujiang Economic and Technological Development Zone, Suzhou, Jiangsu Province, 215200

Patentee after: Suzhou Xili Technology Services Ltd.

Address before: 710048 Shaanxi city of Xi'an Province Jinhua Road No. 5

Patentee before: XI'AN University OF TECHNOLOGY