CN220581329U - First-stage impeller structure of multistage pump - Google Patents
First-stage impeller structure of multistage pump Download PDFInfo
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- CN220581329U CN220581329U CN202322247183.4U CN202322247183U CN220581329U CN 220581329 U CN220581329 U CN 220581329U CN 202322247183 U CN202322247183 U CN 202322247183U CN 220581329 U CN220581329 U CN 220581329U
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- water inlet
- multistage pump
- impeller
- solid particle
- water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 80
- 239000002245 particle Substances 0.000 claims abstract description 41
- 239000007787 solid Substances 0.000 claims abstract description 41
- 230000007246 mechanism Effects 0.000 claims abstract description 29
- 238000001914 filtration Methods 0.000 claims abstract description 24
- 238000012856 packing Methods 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 238000005299 abrasion Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 3
- 239000011707 mineral Substances 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000002184 metal Substances 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
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to the technical field of multistage pumps, in particular to a first-stage impeller structure of a multistage pump, which comprises a multistage pump main shell, a water inlet cavity and a first-stage double-suction impeller, wherein one end, far away from a water outlet, of the inside of the multistage pump main shell is provided with the water inlet cavity, the first-stage double-suction impeller is movably arranged in the water inlet cavity, a first water inlet and a second water inlet are respectively and penetratingly arranged at two ends of the outer surface of the multistage pump main shell, which are close to the first-stage double-suction impeller, the suction flow area can be increased, the flow speed is increased, the flow resistance is reduced, the axial force is prevented, so that the cavitation resistance effect is achieved, and meanwhile, the abrasion of solid particles in water can be reduced through a first solid particle filtering mechanism and a second solid particle filtering mechanism, the mineral water weight is reduced, the possibility of cavitation is greatly reduced, the safe operation of the multistage pump can be ensured, and the service life of the multistage pump is prolonged.
Description
Technical Field
The utility model relates to the technical field of multistage pumps, in particular to a first-stage impeller structure of a multistage pump.
Background
The multistage pump is a centrifugal pump with water inlet and outlet sections and middle sections combined together through a pull rod, the output water pressure of the multistage pump can be very high, and the centrifugal pump is also driven by the rotation of an impeller to obtain centrifugal force, when the gas density reaches the working range of a mechanical vacuum pump, the high vacuum is gradually obtained, the multistage pump is driven by the change of the volume of a pump cavity to realize suction, compression and exhaust, so the multistage pump is a variable-volume centrifugal pump, meanwhile, the impeller is a core part of the multistage pump, the rotating speed is high, the high-output force is high, the blades on the impeller play a main role, and the part of the multistage pump, which is damaged by cavitation, is firstly near the inlet of the blades and then extends to the outlet of the impeller, the metal surface is initially pitted, then the surface presents groove-shaped, honeycomb-shaped and fish-scale cracks, the front cover plate and the rear cover plate of the blades or the impeller are perforated when serious, even the impeller is broken, so the safe operation and the service life of the pump are seriously influenced by the cavitation, meanwhile, the possibility of cavitation accidents is increased due to the serious abrasion of solid particles in water,
therefore, there is a need to design a structure at the first stage impeller of a multistage pump to solve the above-mentioned problems in the background art.
Disclosure of Invention
The utility model aims to provide a first-stage impeller structure of a multistage pump, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a multistage pump's first level impeller department structure, includes multistage pump main casing, goes into water cavity and first level double suction impeller, the one end that the delivery port was kept away from to multistage pump main casing's inside has been seted up into the water cavity, and goes into the inside movable mounting of water cavity and have first level double suction impeller, link up respectively at the surface of multistage pump main casing near first level double suction impeller both ends and install first water inlet, second water inlet, and the inside of first water inlet, second water inlet is fixed mounting respectively has first solid particle filtering mechanism, second solid particle filtering mechanism, and first solid particle filtering mechanism and second solid particle filtering mechanism are formed by conical filter screen and reinforcement frame combination simultaneously.
As a preferable scheme of the utility model, the first solid particle filtering mechanism and the second solid particle filtering mechanism are symmetrically distributed, the tip ends of the conical filter screen are positioned at one ends of the first water inlet and the second water inlet, which are far away from the first-stage double-suction impeller, and the reinforcing frame is positioned between the conical filter screen and the first-stage double-suction impeller.
As a preferable scheme of the utility model, the reinforcing frame comprises a long horizontal frame body welded in the first water inlet and the second water inlet and a short horizontal frame body welded in the conical filter screen, the long horizontal frame body and the short horizontal frame body are fixedly connected through the vertical frame body, meanwhile, the conical filter screen and the long horizontal frame body are fixedly connected through the first inclined connecting frame and the second inclined connecting frame, and the first inclined connecting frame and the second inclined connecting frame are positioned on two sides of the vertical frame body.
As a preferable scheme of the utility model, the first water inlet and the second water inlet are formed by combining a horizontal section and a conical section, and the horizontal section is positioned between the conical section and the first-stage double suction impeller.
As the preferable scheme of the utility model, the wheel shaft is arranged in the first-stage double-suction impeller in a penetrating way, one end of the wheel shaft, which is far away from the motor, is sleeved with the water blocking ring, meanwhile, one end of the wheel shaft, which is close to the motor, is sleeved with the mechanical seal, and meanwhile, a packing sleeve and a packing ring are sequentially sleeved among the water blocking ring, the mechanical seal and the first-stage double-suction impeller.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, the suction flow area can be increased, the flow speed is increased, the flow resistance is reduced, and the axial force is prevented from being generated, so that the cavitation resistance effect is achieved, meanwhile, the solid particles in the sucked water can be filtered by the first solid particle filtering mechanism and the second solid particle filtering mechanism which are arranged by utilizing the conical filter screen, so that the abrasion of the solid particles in the water is reduced, the mineral water weight is reduced, the cavitation occurrence possibility is greatly reduced, the safe operation of the multistage pump is ensured, and the service life of the multistage pump is prolonged.
Drawings
FIG. 1 is a schematic view of the overall planar internal structure of the present utility model;
FIG. 2 is an enlarged view of the internal part of the first water inlet plane of the present utility model;
fig. 3 is a schematic plan view of a solid particle filter mechanism according to the present utility model.
In the figure: 1. a multi-stage pump main housing; 2. a water inlet cavity; 3. a first-stage double-suction impeller; 31. a wheel axle; 32. a water-blocking ring; 33. mechanical sealing; 34. a filler sleeve; 35. a packing ring; 4. a first water inlet; 5. a second water inlet; 451. a horizontal section; 452. a conical section; 6. a first solid particle filtration mechanism; 7. a second solid particle filtration mechanism; 8. a conical filter screen; 9. a reinforcing frame; 91. a long horizontal frame body; 92. a short horizontal frame body; 93. a vertical frame body; 94. a first inclined link; 95. and a second inclined connecting frame.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present utility model are included in the protection scope of the present utility model.
In order that the utility model may be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which, however, the utility model may be embodied in many different forms and are not limited to the embodiments described herein, but are instead provided for the purpose of providing a more thorough and complete disclosure of the utility model.
It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
In an embodiment, please refer to fig. 1-3, the present utility model provides a technical solution:
the utility model provides a multistage pump's first level impeller department structure, includes multistage pump main casing 1, goes into water cavity 2 and first level double suction impeller 3, the one end that the delivery port was kept away from to multistage pump main casing 1's inside has been seted up into water cavity 2, and goes into the inside movable mounting of water cavity 2 has first level double suction impeller 3, is close to first level double suction impeller 3 both ends department at multistage pump main casing 1's surface and link up respectively and install first water inlet 4, second water inlet 5, and the inside of first water inlet 4, second water inlet 5 is fixed mounting respectively has first solid particle filtering mechanism 6, second solid particle filtering mechanism 7, and simultaneously first solid particle filtering mechanism 6 and second solid particle filtering mechanism 7 are formed by conical filter screen 8 and reinforcement frame 9 combination.
The first solid particle filtering mechanism 6 and the second solid particle filtering mechanism 7 are symmetrically distributed, the tip end of the conical filter screen 8 is located at one end of the first water inlet 4 and one end of the second water inlet 5, which are far away from the first-stage double-suction impeller 3, the reinforcing frame 9 is located between the conical filter screen 8 and the first-stage double-suction impeller 3, during operation, the first-stage double-suction impeller 3 rotates at the center under the action of a motor, centrifugal acting force is utilized to suck external water from the first water inlet 4 and the second water inlet 5, solid particles are filtered through the conical filter screen 8 while being sucked, the solid particles generated after filtration automatically fall out under the gravity action of the self and the impact force of a water body, the suction flow area can be increased through the set first-stage double-suction impeller 3, the flow speed is increased, the flow resistance is reduced, the axial force is prevented from being generated, and the solid particles in the sucked water can be filtered through the first solid particle filtering mechanism 6 and the second solid particle filtering mechanism 7, so that the solid particles in the water can be greatly reduced, the service life of the pump is greatly prolonged, and the service life of the pump is greatly prolonged.
In this embodiment, please refer to fig. 1, 2 and 3, the reinforcement rack 9 includes a long horizontal rack 91 welded inside the first water inlet 4 and the second water inlet 5, and a short horizontal rack 92 welded inside the conical filter screen 8, and the long horizontal rack 91 and the short horizontal rack 92 are fixedly connected through the vertical rack 93, and meanwhile, the conical filter screen 8 and the long horizontal rack 91 are fixedly connected through the first inclined connecting rack 94 and the second inclined connecting rack 95, and the first inclined connecting rack 94 and the second inclined connecting rack 95 are located at two sides of the vertical rack 93, and the stability of the conical filter screen 8 can be ensured through the reinforcement rack 9, which is beneficial to the normal operation of the multistage pump.
In this embodiment, referring to fig. 1 and 2, the first water inlet 4 and the second water inlet 5 are formed by combining a horizontal section 451 and a conical section 452, the horizontal section 451 is located between the conical section 452 and the first stage double suction impeller 3, and the caliber of the first water inlet 4 and the caliber of the second water inlet 5 can be increased by the arranged conical section 452, so that the water inlet pressure is reduced, and the cavitation resistance of the multistage pump is further improved.
In this embodiment, referring to fig. 1, the first-stage double-suction impeller 3 is internally and penetratingly provided with a wheel shaft 31, one end of the wheel shaft 31 far away from the motor is sleeved with a water blocking ring 32, meanwhile, one end of the wheel shaft 31 near the motor is sleeved with a mechanical seal 33, and meanwhile, a packing sleeve 34 and a packing ring 35 are sequentially sleeved between the water blocking ring 32, the mechanical seal 33 and the first-stage double-suction impeller 3, and the tightness of the multi-stage pump can be enhanced through the arranged water blocking ring 32, the mechanical seal 33, the packing sleeve 34 and the packing ring 35.
Working principle: during operation, the first-stage double-suction impeller 3 rotates at the best under the action of the motor, and utilizes centrifugal force to suck external water from the first water inlet 4 and the second water inlet 5, and filter solid particles through the conical filter screen 8 while sucking, and solid particles generated after filtering can automatically fall out under the gravity action of the self and the impact force of water, and through the first-stage double-suction impeller 3, the suction flow area can be increased, the flow speed is increased, the flow resistance is reduced, the axial force is prevented from being generated, so that the cavitation resistance effect is achieved, and meanwhile, the first solid particle filter mechanism 6 and the second solid particle filter mechanism 7 can filter solid particles in sucked water by utilizing the conical filter screen 8, so that the abrasion of the solid particles in water is reduced, the mineral water weight is reduced, the possibility of cavitation is greatly reduced, the safe operation of the multistage pump can be ensured, the service life of the multistage pump is prolonged, and the multistage pump has a certain popularization value.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a multistage pump's first-stage impeller department structure, includes multistage pump main casing (1), goes into water cavity (2) and first-stage double suction impeller (3), its characterized in that: the utility model discloses a multistage pump main casing (1), including multistage pump main casing (1) and second water inlet (5), water inlet cavity (2) has been seted up to the inside one end of keeping away from the delivery port, and water inlet cavity (2)'s inside movable mounting has first level double suction impeller (3), it has first water inlet (4) respectively to link up in the surface of multistage pump main casing (1) near first level double suction impeller (3) both ends department, and first water inlet (4), second water inlet (5) inside fixed mounting respectively has first solid particle filter mechanism (6), second solid particle filter mechanism (7), first solid particle filter mechanism (6) and second solid particle filter mechanism (7) are formed by conical filter screen (8) and reinforcing frame (9) combination simultaneously.
2. The primary impeller structure of a multistage pump according to claim 1, wherein: the first solid particle filtering mechanism (6) and the second solid particle filtering mechanism (7) are symmetrically distributed, the tip end of the conical filter screen (8) is located at one end of the first water inlet (4) and one end of the second water inlet (5) away from the first-stage double-suction impeller (3), and the reinforcing frame (9) is located between the conical filter screen (8) and the first-stage double-suction impeller (3).
3. The primary impeller structure of a multistage pump according to claim 2, wherein: the reinforcing frame (9) comprises a long horizontal frame body (91) welded inside the first water inlet (4) and the second water inlet (5) and a short horizontal frame body (92) welded inside the conical filter screen (8), the long horizontal frame body (91) and the short horizontal frame body (92) are fixedly connected through a vertical frame body (93), meanwhile, the conical filter screen (8) and the long horizontal frame body (91) are fixedly connected through a first inclined connecting frame (94) and a second inclined connecting frame (95), and the first inclined connecting frame (94) and the second inclined connecting frame (95) are positioned on two sides of the vertical frame body (93).
4. A multistage pump head impeller structure according to claim 3, wherein: the first water inlet (4) and the second water inlet (5) are formed by combining a horizontal section (451) and a conical section (452), and the horizontal section (451) is positioned between the conical section (452) and the first-stage double-suction impeller (3).
5. The primary impeller structure of a multistage pump according to claim 4, wherein: the inside of first-stage double suction impeller (3) is run through and is installed shaft (31), and the one end cover that shaft (31) kept away from the motor is equipped with water retaining ring (32), and the one end cover that shaft (31) are close to the motor simultaneously is equipped with mechanical seal (33), all overlaps in proper order between water retaining ring (32), mechanical seal (33) and first-stage double suction impeller (3) and is equipped with packing cover (34), packing ring (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322247183.4U CN220581329U (en) | 2023-08-21 | 2023-08-21 | First-stage impeller structure of multistage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322247183.4U CN220581329U (en) | 2023-08-21 | 2023-08-21 | First-stage impeller structure of multistage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220581329U true CN220581329U (en) | 2024-03-12 |
Family
ID=90120201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322247183.4U Active CN220581329U (en) | 2023-08-21 | 2023-08-21 | First-stage impeller structure of multistage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220581329U (en) |
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2023
- 2023-08-21 CN CN202322247183.4U patent/CN220581329U/en active Active
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