CN209990687U - Centrifugal pump structure with impeller sealing ring and pump body sealing ring - Google Patents
Centrifugal pump structure with impeller sealing ring and pump body sealing ring Download PDFInfo
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- CN209990687U CN209990687U CN201920383557.6U CN201920383557U CN209990687U CN 209990687 U CN209990687 U CN 209990687U CN 201920383557 U CN201920383557 U CN 201920383557U CN 209990687 U CN209990687 U CN 209990687U
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Abstract
The utility model relates to a centrifugal pump structure with an impeller sealing ring and a pump body sealing ring, which comprises a pump body, a pump shaft, an impeller chamber, an impeller, a pump suction inlet, a pump body sealing ring and an impeller sealing ring; the pump shaft is arranged inside the pump body; the impeller chamber is arranged in the pump body; the impeller is arranged in the impeller chamber; the pump suction inlet is arranged at the outer side of the impeller chamber; the pump body sealing ring is arranged on the inner wall of the pump body; the impeller sealing ring is arranged at the front end part of the impeller; the pump body sealing ring is matched with the impeller sealing ring through a labyrinth opening ring; the surface of the labyrinth muzzle ring is provided with a Ni60A coating which is compact and uniform in structure and contains diamond particles; the opposite surfaces of the pump body sealing ring and the impeller sealing ring are both provided with tooth groove structures. The utility model discloses can be used for the impeller sealing ring and the pump body sealing ring of centrifugal pump, simple structure is reasonable, and the preparation is convenient, and sealing performance is good, long service life.
Description
Technical Field
The utility model relates to an impeller sealing ring and pump body sealing ring structure especially relate to a centrifugal pump structure with impeller sealing ring and pump body sealing ring.
Background
The centrifugal pump is a pump for conveying liquid by means of centrifugal force generated when an impeller rotates, a pump shell and a water suction pipe are filled with water before the water pump is started, then a motor is started, the pump shaft drives the impeller and the water to rotate at high speed, the water generates centrifugal motion and is thrown to the outer edge of the impeller, and the water flows into a water pressure pipeline of the water pump through a flow channel of a volute-shaped pump shell. The centrifugal pump has various forms such as vertical type, horizontal type, single stage, multistage, single suction, double suction, self suction and the like. The basic structure of the centrifugal pump is composed of an impeller, a pump body, a pump cover, a water retaining ring, a pump shaft, a bearing, a sealing ring and a stuffing box, wherein the sealing ring is also called a leakage reducing ring; the small gap can cause the friction between the impeller and the pump shell to generate abrasion, and in order to increase the reflux resistance, reduce the internal leakage and delay the service life of the impeller and the pump shell, a sealing ring is arranged at the joint of the inner edge of the pump shell and the external support of the impeller.
At present, the structure of the centrifugal pump body sealing ring and the impeller sealing ring matched in the high-temperature high-pressure petrochemical pump of a factory is mostly a plain ring structure, generally made of materials such as cast steel, stainless steel and the like, and the clearance of the sealing ring is between 0.23mm and 0.35mm, so that the structure has the defects that firstly, the material has low wear resistance and the sealing ring needs to be frequently replaced; secondly, under the condition that the overflowing medium contains micro particles, if the clearance of the sealing ring is too small, when the deflection of the rotor and the radial thermal expansion and the vibration of the rotor caused by temperature rise occur, the dynamic and static parts are easy to rub and wear, the wear is aggravated, and even the dynamic and static parts are occluded and locked to cause the damage of the pump. Therefore, a centrifugal pump structure with an impeller sealing ring and a pump body sealing ring is needed, which can effectively prevent hard particles in a medium from corroding a sealing matching surface, increase leakage resistance, improve the service performance of the pump, prevent the matching surface from being occluded and locked, and ensure safe and reliable use.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a centrifugal pump structure with impeller sealing ring and pump body sealing ring that simple structure is reasonable, the preparation is convenient, sealing performance is good, long service life.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a centrifugal pump structure with an impeller sealing ring and a pump body sealing ring comprises a pump body, a pump shaft, an impeller chamber, an impeller, a pump suction inlet, a pump body sealing ring and an impeller sealing ring; the pump shaft is arranged inside the pump body; the impeller chamber is arranged in the pump body and is arranged at the head of the pump shaft; the impeller is arranged in the impeller chamber; the pump suction inlet is arranged at the outer side of the impeller chamber; the pump body sealing ring is arranged on the inner wall of the pump body and is positioned between the pump suction inlet and the impeller chamber; the impeller sealing ring is arranged at the front end part of the impeller and is arranged at a position corresponding to the pump body sealing ring.
As above a centrifugal pump structure with impeller sealing ring and pump body sealing ring, pump body sealing ring and impeller sealing ring cooperate, pump body sealing ring and impeller sealing ring pass through labyrinth mouth ring cooperation, be convenient for strengthen sealed effect, reduce the discharge capacity of pump intracavity liquid, when the motor passes through the pump shaft and drives the impeller rotatory like this, water in the impeller all flows into the pump body after obtaining the energy, and get into outlet pipe way through the pump mouth, thereby prevented impeller export water flow effectively and pumped the entrance, avoid because of the leakage that the existence in clearance leads to, improve the volumetric efficiency of pump, sealing performance is better, life is longer.
According to the centrifugal pump structure with the impeller sealing ring and the pump body sealing ring, the Ni60A coating which is compact and uniform in structure and contains diamond particles is arranged on the surface of the labyrinth opening ring, so that the hardness and the wear resistance of the coating are remarkably improved, the structure of the coating is compact and uniform, the service life of the sealing ring is greatly prolonged, the sealing performance is better, and the use is safer and more reliable.
According to the centrifugal pump structure with the impeller sealing ring and the pump body sealing ring, the labyrinth mouth ring is made of low-cost steel, so that the use cost is lower, and the economic benefit is more remarkable.
As above a centrifugal pump structure with impeller sealing ring and pump body sealing ring, the opposite face of pump body sealing ring and impeller sealing ring all set up and be tooth's socket structure, be convenient for prevent that the particulate matter in the liquid from getting into the gap of sealing ring structure, be unlikely to hinder impeller sealing ring and pump body sealing ring, impeller sealing ring and pump body sealing ring also can not consequently be stung each other, use safe and reliable more, life is longer.
As a preferred scheme of a centrifugal pump structure with an impeller sealing ring and a pump body sealing ring, the Ni60A coating containing diamond particles is a Ni60A coating containing 20% of diamond particles, so that Ni60A + 20% of diamond powder can be conveniently ball-milled for 10 hours under the protection of argon gas, the ball-milled powder is granulated, the powder with the granularity lower than 200 meshes is selected as a spraying material after screening, and flame spraying is carried out on a mouth ring to prepare the Ni60A coating containing 20% of diamond particles, wherein the hardness of the coating can reach HRC 59-63, the roughness of a processed surface is higher than 3.2um, the cost performance is higher, the hardness, the wear resistance and the corrosion resistance are higher, and the use is safer and more reliable.
As the preferred scheme of the centrifugal pump structure with the impeller sealing ring and the pump body sealing ring, the inner wall of the pump body is provided with the sealing seat, and the pump body sealing ring is arranged on the sealing seat, so that the installation is convenient and rapid, the time and the labor are saved, the connection is firmer and more stable, and the service life is longer.
As the preferred scheme of the centrifugal pump structure with the impeller sealing ring and the pump body sealing ring, the limiting boss is arranged on the outer side of the connecting part of the pump body sealing ring and the impeller sealing ring, so that the centrifugal pump structure is convenient to install, more accurate in positioning, firmer and more stable in structure, and safer and more reliable in use.
The utility model has the advantages that: the pump shaft of the utility model is arranged inside the pump body; the impeller chamber is arranged in the pump body and is arranged at the head of the pump shaft; the impeller is arranged in the impeller chamber; the pump suction inlet is arranged at the outer side of the impeller chamber; the pump body sealing ring is arranged on the inner wall of the pump body and is positioned between the pump suction inlet and the impeller chamber; the impeller sealing ring is arranged at the front end part of the impeller and is arranged at a position corresponding to the pump body sealing ring; the pump body sealing ring is matched with the impeller sealing ring, and the pump body sealing ring is matched with the impeller sealing ring through a labyrinth opening ring; the surface of the labyrinth muzzle is provided with a Ni60A coating which is compact and uniform in structure and contains diamond particles; the labyrinth mouth ring is made of low-cost steel; the opposite face of pump body sealing ring and impeller sealing ring all sets up and is the tooth's socket structure, the utility model discloses can be used for the impeller sealing ring and the pump body sealing ring of centrifugal pump, simple structure is reasonable, and the preparation is convenient, and sealing performance is good, long service life.
Drawings
FIG. 1 is a schematic structural diagram of a centrifugal pump structure having an impeller seal ring and a pump body seal ring in an embodiment;
fig. 2 is a partially enlarged schematic view of a centrifugal pump structure having an impeller seal ring and a pump body seal ring in the embodiment.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.
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 invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
As shown in fig. 1 and 2, a centrifugal pump structure with an impeller sealing ring and a pump body sealing ring comprises a pump body 1, a pump shaft 2, an impeller chamber 3, an impeller 4, a pump suction inlet 5, a pump body sealing ring 6 and an impeller sealing ring 7; the pump shaft 2 is arranged inside the pump body 1; the impeller chamber 3 is arranged inside the pump body 1, and the impeller chamber 3 is arranged at the head part of the pump shaft 2; the impeller 4 is arranged inside the impeller chamber 3; the pump suction inlet 5 is arranged at the outer side of the impeller chamber 3; the pump body sealing ring 6 is arranged on the inner wall of the pump body 1, and the pump body sealing ring 6 is positioned between the pump suction inlet 5 and the impeller chamber 3; the impeller sealing ring 7 is arranged at the front end part of the impeller 4, and the impeller sealing ring 7 is arranged at the position corresponding to the pump body sealing ring 6.
In an embodiment of the centrifugal pump structure with the impeller sealing ring and the pump body sealing ring, the pump body sealing ring 6 is matched with the impeller sealing ring 7 through the labyrinth mouth ring 8, the sealing effect is convenient to enhance, and the discharge amount of liquid in a pump cavity is reduced.
In one embodiment of the centrifugal pump structure with the impeller sealing ring and the pump body sealing ring, the surface of the labyrinth opening ring 8 is provided with the Ni60A coating 9 which is compact and uniform in structure and contains diamond particles, so that the hardness and the wear resistance of the coating are obviously improved, the structure of the coating is compact and uniform, the service life of the sealing ring is greatly prolonged, the sealing performance is better, and the use is safer and more reliable.
In one embodiment of the centrifugal pump structure with the impeller sealing ring and the pump body sealing ring, the labyrinth opening ring 8 is made of low-cost steel, so that the use cost is lower, and the economic benefit is more remarkable.
In an embodiment of the centrifugal pump structure with the impeller sealing ring and the pump body sealing ring, the opposite surfaces of the pump body sealing ring 6 and the impeller sealing ring 7 are both provided with a tooth groove structure, so that particles in liquid can be prevented from entering gaps of the sealing ring structure, the impeller sealing ring 7 and the pump body sealing ring 6 can not be damaged, the impeller sealing ring 7 and the pump body sealing ring 6 can not be mutually occluded, the use is safer and more reliable, and the service life is longer.
In an embodiment of the centrifugal pump structure with the impeller sealing ring and the pump body sealing ring, the diamond particle-containing Ni60A coating 9 is a Ni60A coating containing 20% of diamond particles, so that Ni60A + 20% of diamond powder can be ball-milled for 10 hours under the protection of argon gas, the ball-milled powder is granulated, after screening, powder with the particle size of less than 200 meshes is selected as a spraying material, and flame spraying is performed on a mouth ring to prepare the Ni60A coating containing 20% of diamond particles, wherein the hardness of the coating can reach HRC 59-63, the roughness of a processed surface is higher than 3.2um, the cost performance is higher, the hardness, the wear resistance and the corrosion resistance are higher, and the use is safer and more reliable.
In one embodiment of the centrifugal pump structure with the impeller sealing ring and the pump body sealing ring, the inner wall of the pump body 1 is provided with the sealing seat, and the pump body sealing ring 6 is arranged on the sealing seat, so that the installation is convenient and rapid, the time and the labor are saved, the connection is firmer and more stable, and the service life is longer.
In one embodiment of the centrifugal pump structure with the impeller sealing ring and the pump body sealing ring, the limiting boss is arranged on the outer side of the connecting part of the pump body sealing ring 6 and the impeller sealing ring 7, so that the centrifugal pump structure is convenient to install, more accurate in positioning, firmer and more stable in structure, and safer and more reliable in use.
The pump shaft 2 of the utility model is arranged inside the pump body 1; the impeller chamber 3 is arranged inside the pump body 1, and the impeller chamber 3 is arranged at the head part of the pump shaft 2; the impeller 4 is arranged inside the impeller chamber 3; the pump suction port 5 is arranged outside the impeller chamber 3; the pump body sealing ring 6 is arranged on the inner wall of the pump body 1, and the pump body sealing ring 6 is positioned between the pump suction inlet 5 and the impeller chamber 3; the impeller sealing ring 7 is arranged at the front end part of the impeller 4, and the impeller sealing ring 7 is arranged at the position corresponding to the pump body sealing ring 6; the pump body sealing ring 6 is matched with the impeller sealing ring 7, and the pump body sealing ring 6 is matched with the impeller sealing ring 7 through a labyrinth opening ring 8; the surface of the labyrinth muzzle ring 8 is provided with a Ni60A coating 9 which is compact and uniform in structure and contains diamond particles; the labyrinth mouth ring 8 is made of low-cost steel; the opposite surfaces of the pump body sealing ring 6 and the impeller sealing ring 7 are both arranged to be in a tooth groove structure. The utility model discloses can be used for the impeller sealing ring and the pump body sealing ring of centrifugal pump, simple structure is reasonable, and the preparation is convenient, and sealing performance is good, long service life.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (5)
1. The utility model provides a centrifugal pump structure with impeller sealing ring and pump body sealing ring which characterized in that: comprises a pump body (1), a pump shaft (2), an impeller chamber (3), an impeller (4), a pump suction inlet (5), a pump body sealing ring (6) and an impeller sealing ring (7); the pump shaft (2) is arranged inside the pump body (1); the impeller chamber (3) is arranged inside the pump body (1), and the impeller chamber (3) is arranged at the head of the pump shaft (2); the impeller (4) is arranged inside the impeller chamber (3); the pump suction inlet (5) is arranged at the outer side of the impeller chamber (3); the pump body sealing ring (6) is arranged on the inner wall of the pump body (1), and the pump body sealing ring (6) is positioned between the pump suction inlet (5) and the impeller chamber (3); the impeller sealing ring (7) is arranged at the front end part of the impeller (4), and the impeller sealing ring (7) is arranged at a position corresponding to the pump body sealing ring (6).
2. A centrifugal pump structure having an impeller seal ring and a pump body seal ring according to claim 1, wherein: the pump body sealing ring (6) is matched with the impeller sealing ring (7), and the pump body sealing ring (6) is matched with the impeller sealing ring (7) through a labyrinth opening ring (8).
3. A centrifugal pump structure having an impeller seal ring and a pump body seal ring according to claim 2, wherein: the surface of the labyrinth muzzle ring (8) is provided with a Ni60A coating (9) which is compact and uniform in structure and contains diamond particles.
4. A centrifugal pump structure having an impeller seal ring and a pump body seal ring according to claim 2, wherein: the labyrinth mouth ring (8) is made of low-cost steel.
5. A centrifugal pump structure having an impeller seal ring and a pump body seal ring according to claim 1, wherein: the opposite surfaces of the pump body sealing ring (6) and the impeller sealing ring (7) are both provided with a tooth groove structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920383557.6U CN209990687U (en) | 2019-03-25 | 2019-03-25 | Centrifugal pump structure with impeller sealing ring and pump body sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920383557.6U CN209990687U (en) | 2019-03-25 | 2019-03-25 | Centrifugal pump structure with impeller sealing ring and pump body sealing ring |
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| CN209990687U true CN209990687U (en) | 2020-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920383557.6U Active CN209990687U (en) | 2019-03-25 | 2019-03-25 | Centrifugal pump structure with impeller sealing ring and pump body sealing ring |
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| CN (1) | CN209990687U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357160A (en) * | 2021-07-16 | 2021-09-07 | 湖南耐普泵业股份有限公司 | Permanent-magnet leakage-free low-temperature pump |
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2019
- 2019-03-25 CN CN201920383557.6U patent/CN209990687U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357160A (en) * | 2021-07-16 | 2021-09-07 | 湖南耐普泵业股份有限公司 | Permanent-magnet leakage-free low-temperature pump |
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