CN213392700U - Centrifugal pump body structure with pump body opening ring - Google Patents
Centrifugal pump body structure with pump body opening ring Download PDFInfo
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- CN213392700U CN213392700U CN202022045578.2U CN202022045578U CN213392700U CN 213392700 U CN213392700 U CN 213392700U CN 202022045578 U CN202022045578 U CN 202022045578U CN 213392700 U CN213392700 U CN 213392700U
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- pump body
- impeller
- ring
- inlet
- pump
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Abstract
The utility model discloses a centrifugal pump body structure with a pump body mouth ring, which comprises a pump body; the pump is characterized in that the inlet end of the pump body is connected with an I-shaped inlet pipe through a fastening bolt, and a sealing ring is arranged between the inlet pipe and the pump body; an impeller is arranged in the pump body, and an impeller opening ring is arranged at one end of the impeller, which is close to an inlet of the pump body; a convex pump body opening ring is arranged between the inlet pipe and the impeller and matched with a step at the inlet end of the pump body; an axial sealing gap is arranged between the pump body port ring and the impeller port ring. The pump has the advantages of simple structure, good stability, safety, reliability and long service life, and can effectively avoid the interference of the main liquid flow caused by the inconsistency of the liquid backflow direction and the main flow direction, and greatly improve the working efficiency of the pump body.
Description
Technical Field
The utility model relates to a field of the pump body especially relates to a take centrifugal pump body structure of pump body choma.
Background
The centrifugal pump is a general machine widely applied to fluid conveying, the single-stage single-suction cantilever type centrifugal pump is the most general pump, the impeller of the pump rotates, and a certain gap is inevitably formed between the impeller of the pump and a stationary pump body, so that pumping media can flow back from a high-pressure side of an impeller outlet to a low-pressure side of an impeller inlet, energy consumption is increased, and especially under the condition that the conveying media contain solid particles, the leakage is increased more and more due to abrasion, so that the throttling of the pump body and the impeller inlet is very necessary; in the prior art, an inlet ring and a pump body are of an integrated structure, a pump body port ring is connected with the pump body through fastening screws, and an impeller port ring is also connected with an impeller through the fastening screws, so that the disassembly is inconvenient; an annular cone is formed between the inlet of the pump body and the end face of the impeller, so that when the pump works, the liquid leakage direction is radial, and the main flow direction of the liquid is axial, so that the interference is formed on the main flow liquid, and the working efficiency of the pump is influenced.
Disclosure of Invention
The utility model aims at providing a sealing ring for the inlet of a centrifugal pump, which has simple structure and good use effect and greatly reduces the abrasion; the technical problem is solved.
In order to realize the technical purpose, reach foretell technical requirement, the utility model discloses the technical scheme who adopts is: a centrifugal pump body structure with a pump body opening ring comprises a pump body; the method is characterized in that: the inlet end of the pump body is connected with an I-shaped inlet pipe through a fastening bolt, and a sealing ring is arranged between the inlet pipe and the pump body; an impeller is arranged in the pump body, and an impeller opening ring is arranged at one end of the impeller, which is close to an inlet of the pump body; a convex pump body opening ring is arranged between the inlet pipe and the impeller and matched with a step at the inlet end of the pump body; an axial sealing gap is arranged between the pump body port ring and the impeller port ring.
Preferably: the inlet pipe and the pump body matched with one end are provided with bosses which are matched with step-shaped inner holes of the pump body.
Preferably: one end of the pump body opening ring is sleeved inside the impeller opening ring.
Preferably: the impeller opening ring and the impeller are of an integrated structure.
Preferably: the pump body mouth ring and the pump body are of an integrated structure.
The utility model has the advantages that; the utility model provides a take centrifugal pump body structure of pump body choma, compares with traditional structure: the rotating impeller orifice ring is arranged outside the static pump body orifice ring to form a sealing gap parallel to the axis; the liquid flowing back from the high-pressure area at the outlet of the impeller to the low-pressure area at the inlet of the impeller along the gap between the front cover plate of the impeller and the pump cover flows in the direction of the inlet of the impeller from the radial direction to the axial direction, and the flow direction of the liquid is consistent with the liquid flow direction at the inlet of the pump, so that the liquid flows stably and interflows, the main liquid flow is not interfered with each other, the performance of the pump, particularly the performance of a small flow area, is improved. The pump body mouth ring does not need to be fixed by screws, but is clamped and fixed by the inlet pipe and the pump body, and the replacement is convenient. The utility model discloses simple structure, stability is good, safe and reliable, long service life can effectively avoid liquid reflux direction inconsistent with the mainstream direction and form the interference to the main part liquid stream, has improved the work efficiency of the pump body greatly.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of I of FIG. 1 according to the present invention;
FIG. 3 is a schematic diagram of a prior art structure;
in the figure: 1. a pump body; 2. an inlet pipe; 3. a seal ring; 4. an impeller; 5. an impeller eye ring; 6. a pump body orifice ring; 7. a step; 8. sealing the gap; 9. and (4) a boss.
Detailed Description
In order to make the object, technical solution and beneficial technical effects of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments;
in the drawings: a centrifugal pump body structure with a pump body opening ring comprises a pump body 1; the inlet end of the pump body 1 is connected with an I-shaped inlet pipe 2 through a fastening bolt, and a sealing ring 3 is arranged between the inlet pipe 2 and the pump body 1; an impeller 4 is arranged in the pump body 1, and an impeller opening ring 5 is arranged at one end, close to an inlet of the pump body, of the impeller 4; a convex pump body opening ring 6 is arranged between the inlet pipe 2 and the impeller 4, and the pump body opening ring 6 is matched with a step 7 at the inlet end of the pump body; the impeller mouth ring is assembled and fixed to the inlet of the impeller 4 in a screw or embedding mode, and the pump body mouth ring is fixed in a clamping mode through the inlet pipe and the pump body, so that the installation is convenient; an axial sealing gap 8 is arranged between the pump body port ring 6 and the impeller port ring 5; one end of the pump body mouth ring 6 is sleeved inside the impeller mouth ring 5, and a sealing gap formed by the outer circular surface of the stationary pump body mouth ring and the inner circular surface of the rotating impeller mouth ring is parallel to the axis direction, so that the flowing direction of the backflow liquid points to the impeller inlet and is parallel to the main liquid flow direction, and the backflow liquid does not interfere with the main liquid flow. A boss 9 is arranged at one end of the inlet pipe 2 matched with the pump body, and the boss 9 is matched with a step-shaped inner hole of the pump body; the sealing performance is good, and liquid leakage is avoided.
The utility model discloses another kind of embodiment: the impeller mouth ring 5 and the impeller 4 are arranged into an integrated structure, and the pump body mouth ring 6 and the pump body 1 are also arranged into an integrated structure; the impeller pump has the advantages of better structural stability, convenience in installation and longer service life, and is particularly suitable for the condition that the impeller and the pump body are made of hard wear-resistant materials.
The utility model discloses a concrete implementation: the structure makes the liquid flowing back from the high pressure area of the impeller outlet to the low pressure area of the impeller inlet along the gap between the impeller front cover plate and the pump cover, and the flow direction is changed from radial direction to axial direction to the impeller inlet, and the liquid flow direction is consistent with the liquid flow direction of the pump inlet, and the liquid flows are merged stably, so that the main liquid flow is not interfered to impact, the performance of the pump, especially the performance of a small flow area, and the anti-cavitation capacity is improved.
The foregoing examples are given for the purpose of illustrating the present invention in a clear and non-restrictive manner, and it will be apparent to those skilled in the art that variations and modifications of the present invention may be made in other variations and modifications based on the foregoing description, and it is not necessary or necessary to exhaustively enumerate all embodiments, and all such variations and modifications as are obvious and desirable in the art are within the scope of the present invention.
Claims (5)
1. A centrifugal pump body structure with a pump body orifice ring comprises a pump body (1); the method is characterized in that: the inlet end of the pump body (1) is connected with an I-shaped inlet pipe (2) through a fastening bolt, and a sealing ring (3) is arranged between the inlet pipe (2) and the pump body (1); an impeller (4) is arranged in the pump body (1), and an impeller opening ring (5) is arranged at one end, close to an inlet of the pump body, of the impeller (4); a convex pump body opening ring (6) is arranged between the inlet pipe (2) and the impeller (4), and the pump body opening ring (6) is matched with a step (7) at the inlet end of the pump body; an axial sealing gap (8) is arranged between the pump body port ring (6) and the impeller port ring (5).
2. The centrifugal pump body structure with the pump body orifice ring according to claim 1, characterized in that: the inlet pipe (2) and the pump body matched with one end are provided with a boss (9), and the boss (9) is matched with the step-shaped inner hole of the pump body.
3. The centrifugal pump body structure with the pump body orifice ring according to claim 1, characterized in that: one end of the pump body port ring (6) is sleeved inside the impeller port ring (5).
4. The centrifugal pump body structure with the pump body orifice ring according to claim 1, characterized in that: the impeller opening ring (5) and the impeller (4) are of an integrated structure.
5. The centrifugal pump body structure with the pump body orifice ring according to claim 1, characterized in that: the pump body mouth ring (6) and the pump body (1) are of an integrated structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022045578.2U CN213392700U (en) | 2020-09-18 | 2020-09-18 | Centrifugal pump body structure with pump body opening ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022045578.2U CN213392700U (en) | 2020-09-18 | 2020-09-18 | Centrifugal pump body structure with pump body opening ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213392700U true CN213392700U (en) | 2021-06-08 |
Family
ID=76179378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022045578.2U Active CN213392700U (en) | 2020-09-18 | 2020-09-18 | Centrifugal pump body structure with pump body opening ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213392700U (en) |
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2020
- 2020-09-18 CN CN202022045578.2U patent/CN213392700U/en active Active
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