CN216157956U - Vertical heavy medium slurry pump - Google Patents
Vertical heavy medium slurry pump Download PDFInfo
- Publication number
- CN216157956U CN216157956U CN202122238817.0U CN202122238817U CN216157956U CN 216157956 U CN216157956 U CN 216157956U CN 202122238817 U CN202122238817 U CN 202122238817U CN 216157956 U CN216157956 U CN 216157956U
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- pump
- impeller
- flange
- supporting tube
- pump body
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Abstract
The utility model discloses a vertical heavy medium slurry pump, which comprises an impeller, a pump shaft, a pump body, a pump cover, a loose flange and a supporting pipe, wherein the impeller is arranged on the pump shaft; the pump cover is inserted at the rear end of the pump body, the two semi-annular sub-pieces of the loop flange are sleeved on the front side of the annular positioning table at the rear end of the pump body in a surrounding manner, and the front end of the supporting tube is inserted in a supporting tube mounting cavity of the pump cover; the loop flange and each corresponding bolt connecting hole of the connecting flange at the front end of the supporting tube are respectively locked through a locking stud and a locking nut, so that the pump body, the pump cover and the loop flange are fixed; the front end of the pump shaft penetrates through a pump shaft through hole of the pump cover and enters the inner cavity of the pump body, the front end of the pump shaft is connected with the impeller in a sleeved mode, and the pump shaft and the impeller are fixed through an impeller bolt and an impeller nut. The slurry pump greatly enhances the passing capacity of the impeller and effectively prevents large solid particles in slurry from blocking the impeller.
Description
Technical Field
The utility model relates to a vertical heavy medium slurry pump, and belongs to the technical field of centrifugal pumps.
Background
The vertical slurry pump is a centrifugal pump for conveying slurry with high solid content, and is widely applied to stations of slag water treatment, sump drainage and the like in industries such as power plants, coal chemical industry, alumina, mine metallurgy and the like. The impeller of the vertical slurry pump is a core part of the whole pump. The impeller consists of three parts, namely a blade, a cover plate and a hub, wherein the blade is used for acting on fluid, the cover plate plays a role in supporting the blade, and the hub is connected with the cover plate and is matched with other parts for installation. The center of the hub is provided with a through hole with a key groove, the through hole is matched with the pump shaft, the plane of the rear end of the hub props against the shaft shoulder for positioning, the front end of the hub is locked by an impeller nut and a conical cap, and torque is transmitted between the shaft and the impeller by a flat key. The impeller is driven by the pump shaft to rotate, mechanical energy is converted into kinetic energy of fluid in the pump body, and the kinetic energy is discharged from the outlet of the pump.
The impeller structure adopted by the vertical heavy medium slurry pump in the prior art is a closed impeller, the central hole of an impeller hub is matched with a shaft, the rear end face of the impeller hub props against the shaft shoulder of the shaft for positioning, the front end face of the impeller hub is pressed by the end face of a conical cap, an impeller bolt penetrates through the central hole of the conical cap and is connected with the shaft hole through threads to lock the conical cap and the impeller. Although the structure is mature, the defects that an impeller flow passage is easy to block, the axial force is large and the bearing is easy to damage when the pump runs, and the flow of the pump is constant and cannot be automatically adjusted according to the liquid level change exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems that a flow channel is easy to block, an axial force is large when a pump runs, a bearing is easy to damage, the flow of the pump is constant and cannot be automatically adjusted according to liquid level change and the like in the conventional vertical heavy medium slurry pump, and provide the vertical heavy medium slurry pump.
The purpose of the utility model is realized by the following technical scheme:
the utility model discloses a vertical heavy medium slurry pump, which comprises an impeller, a pump shaft, a pump body, a pump cover, a loose flange and a supporting pipe, wherein the impeller is arranged on the pump shaft;
the impeller is a semi-open double-suction impeller;
an annular positioning table extends outwards along the radial direction outside the rear port part of the pump body;
the pump cover is a connecting plate with the outer diameter matched with the inner diameter of the rear port part of the pump body, a pump shaft through hole is formed in the middle of the pump cover, a supporting tube mounting cavity is formed in the rear end of the pump shaft through hole, and a limiting ring with the outer diameter larger than the inner diameter of the rear port part of the pump body is arranged on the outer wall of the rear end of the pump cover;
the loop flange is an annular assembly formed by two semi-annular sub-assemblies in an encircling manner, the inner diameter of the loop flange annular assembly is smaller than the outer diameter of the annular positioning table at the rear end of the pump body, and a group of bolt connecting holes which are uniformly distributed circumferentially are formed in the annular surface of the loop flange annular assembly;
the outer wall of the front end of the supporting tube is provided with a connecting flange, and the connecting flange of the supporting tube is provided with a bolt connecting hole corresponding to the loop flange annular assembly;
the pump cover is inserted at the rear end of the pump body and is axially limited forwards through a limiting ring at the rear end of the pump cover; the two semi-annular sub-pieces of the loop flange are sleeved on the front side of the annular positioning table at the rear end of the pump body in a surrounding manner, and the front end of the supporting tube is inserted into the supporting tube mounting cavity of the pump cover; the loop flange and each corresponding bolt connecting hole of the connecting flange at the front end of the supporting tube are respectively locked through a locking stud and a locking nut, so that the pump body, the pump cover and the loop flange are fixed; the pump shaft extends forwards from the inner cavity of the supporting tube, the front end of the pump shaft penetrates through the pump shaft through hole of the pump cover and enters the inner cavity of the pump body, the front end of the pump shaft is sleeved with the impeller, and the pump shaft and the impeller are fixed through an impeller bolt and an impeller nut.
And the side wall of the front end of the pump shaft is in key connection with the impeller hub.
The pump cover is connected with the butt joint surface of the support pipe connecting flange through a spigot structure.
Advantageous effects
The slurry pump is simple in structure and convenient to disassemble and assemble, and the semi-open type double-suction impeller is adopted, so that the passing capacity of the impeller is greatly enhanced, and large solid particles in slurry are effectively prevented from blocking the impeller; and the pump can be switched between bidirectional large-flow suction and unidirectional small-flow suction according to the height change of the liquid level, so that the flow of the pump can be automatically adjusted according to the height of the liquid level, and the starting and stopping frequency of the pump is reduced.
Drawings
FIG. 1 is a schematic view of the construction of a slurry pump according to the present invention;
in the drawings, 1-impeller bolt; 2-impeller nut; 3-an impeller; 4-looping flanges; 5-a pump body; 6-locking the stud; 7-locking the nut; 8-pump cover; 9-supporting tube; 10-pump shaft.
Detailed Description
The utility model is further described with reference to the following figures and examples.
Examples
As shown in fig. 1, the vertical heavy medium slurry pump of the present invention comprises an impeller 3, a pump shaft 10, a pump body 5, a pump cover 8, a loose flange 4 and a support tube 9;
the impeller 3 adopts a semi-open type double-suction impeller;
an annular positioning table extends outwards along the radial direction outside the rear port part of the pump body 5;
the pump cover 8 is a connecting plate with the outer diameter matched with the inner diameter of the rear port part of the pump body 5, a pump shaft through hole is formed in the middle of the pump cover 8, a supporting tube mounting cavity is formed in the rear end of the pump shaft through hole, and a limiting ring with the outer diameter larger than the inner diameter of the rear port part of the pump body 5 is arranged on the outer wall of the rear end of the pump cover 8;
the loop flange 4 is an annular assembly formed by two semi-annular sub-assemblies in an encircling manner, the inner diameter of the annular assembly of the loop flange 4 is smaller than the outer diameter of an annular positioning table at the rear end of the pump body 5, and a group of bolt connecting holes which are uniformly distributed circumferentially are formed in the annular surface of the annular assembly of the loop flange 4;
a connecting flange is arranged on the outer wall of the front end of the supporting pipe 9, and a bolt connecting hole corresponding to the annular assembly of the loop flange 4 is formed in the connecting flange of the supporting pipe 9;
the pump cover 8 is inserted at the rear end of the pump body 5, and the pump cover 8 is axially limited forwards through a limiting ring at the rear end of the pump cover; the two semi-annular sub-pieces of the loop flange 4 are sleeved on the front side of the annular positioning table at the rear end of the pump body 5 in a surrounding manner, and the front end of the support tube 9 is inserted into the support tube mounting cavity of the pump cover 8; the corresponding bolt connecting holes of the loop flange 4 and the connecting flange at the front end of the supporting tube 9 are respectively locked through a locking stud 6 and a locking nut 7, so that the pump body 5, the pump cover 8 and the loop flange 4 are fixed; the pump shaft 10 extends forwards from the inner cavity of the support tube 9, the front end of the pump shaft 10 penetrates through a pump shaft through hole of the pump cover 8 and enters the inner cavity of the pump body 5, the front end of the pump shaft 10 is connected with the impeller 3 in a sleeved mode, and the pump shaft 10 and the impeller 3 are fixed through an impeller bolt 1 and an impeller nut 2.
The side wall of the front end of the pump shaft 10 is connected with the hub of the impeller 3 through a key.
The pump cover 8 is connected with the butt joint surface of the supporting pipe 9 connecting flange through a spigot structure.
Claims (3)
1. The utility model provides a vertical heavy medium sediment stuff pump which characterized by: comprises an impeller, a pump shaft, a pump body, a pump cover, a loose flange and a supporting pipe;
the impeller is a semi-open double-suction impeller;
an annular positioning table extends outwards along the radial direction outside the rear port part of the pump body;
the pump cover is a connecting plate with the outer diameter matched with the inner diameter of the rear port part of the pump body, a pump shaft through hole is formed in the middle of the pump cover, a supporting tube mounting cavity is formed in the rear end of the pump shaft through hole, and a limiting ring with the outer diameter larger than the inner diameter of the rear port part of the pump body is arranged on the outer wall of the rear end of the pump cover;
the loop flange is an annular assembly formed by two semi-annular sub-assemblies in an encircling manner, the inner diameter of the loop flange annular assembly is smaller than the outer diameter of the annular positioning table at the rear end of the pump body, and a group of bolt connecting holes which are uniformly distributed circumferentially are formed in the annular surface of the loop flange annular assembly;
the outer wall of the front end of the supporting tube is provided with a connecting flange, and the connecting flange of the supporting tube is provided with a bolt connecting hole corresponding to the loop flange annular assembly;
the pump cover is inserted at the rear end of the pump body and is axially limited forwards through a limiting ring at the rear end of the pump cover; the two semi-annular sub-pieces of the loop flange are sleeved on the front side of the annular positioning table at the rear end of the pump body in a surrounding manner, and the front end of the supporting tube is inserted into the supporting tube mounting cavity of the pump cover; the loop flange and each corresponding bolt connecting hole of the connecting flange at the front end of the supporting tube are respectively locked through a locking stud and a locking nut, so that the pump body, the pump cover and the loop flange are fixed; the pump shaft extends forwards from the inner cavity of the supporting tube, the front end of the pump shaft penetrates through the pump shaft through hole of the pump cover and enters the inner cavity of the pump body, the front end of the pump shaft is sleeved with the impeller, and the pump shaft and the impeller are fixed through an impeller bolt and an impeller nut.
2. The vertical heavy medium slurry pump as claimed in claim 1, which is characterized in that: and the side wall of the front end of the pump shaft is in key connection with the impeller hub.
3. The vertical heavy medium slurry pump as claimed in claim 1, which is characterized in that: the pump cover is connected with the butt joint surface of the support pipe connecting flange through a spigot structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122238817.0U CN216157956U (en) | 2021-09-09 | 2021-09-09 | Vertical heavy medium slurry pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122238817.0U CN216157956U (en) | 2021-09-09 | 2021-09-09 | Vertical heavy medium slurry pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216157956U true CN216157956U (en) | 2022-04-01 |
Family
ID=80850384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122238817.0U Expired - Fee Related CN216157956U (en) | 2021-09-09 | 2021-09-09 | Vertical heavy medium slurry pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216157956U (en) |
-
2021
- 2021-09-09 CN CN202122238817.0U patent/CN216157956U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220401 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |