CN219012981U - Ceramic pump cover of centrifugal slurry pump - Google Patents
Ceramic pump cover of centrifugal slurry pump Download PDFInfo
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- CN219012981U CN219012981U CN202223193772.0U CN202223193772U CN219012981U CN 219012981 U CN219012981 U CN 219012981U CN 202223193772 U CN202223193772 U CN 202223193772U CN 219012981 U CN219012981 U CN 219012981U
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Abstract
The utility model discloses a ceramic pump cover of a centrifugal slurry pump, which comprises a metal shell and a ceramic liner; the middle part of the metal shell is a circular truncated cone-shaped cylindrical part, and annular connecting tables extend outwards axially at the two end opening parts of the circular truncated cone-shaped cylindrical part; the ceramic liner is a cylindrical part with the shape matched with the shape of the metal shell and uniform wall thickness, a group of circumferentially uniformly distributed radially extending rectifying plates are arranged at the front end of the inner wall of the ceramic liner, and the inscribed circle diameter of each rectifying plate is matched with the diameter of the inner wall of the small port part of the ceramic liner; the outer wall of the ceramic inner container is adhered to the inner cavity of the metal shell through resin glue. The ceramic pump cover of the utility model improves the abrasion resistance of the pump cover, thereby greatly improving the service life of the centrifugal slurry pump cover.
Description
Technical Field
The utility model discloses a ceramic pump cover of a centrifugal slurry pump, belonging to the field of fluid machinery and fluid power engineering.
Background
The centrifugal slurry pump is a kind of machinery which increases the kinetic energy and potential energy of solid-liquid mixed medium by centrifugal force generated by the rotation of impeller of the pump, and generally uses electric motor as medium to convert electric energy into kinetic energy and potential energy of medium. Centrifugal slurry pumps differ from conventional centrifugal pumps in that the medium being transported contains solid particles which have a erosive wear on the pumping flow-through parts (parts in contact with the medium).
The main parts of the centrifugal slurry pump comprise a transmission assembly and an overflow assembly. When the device works, a medium flows into the impeller through the inlet of the front guard plate, is thrown out under the action of centrifugal force of the impeller, and then a part of the medium is discharged through the outlet of the volute; a part of the medium enters the sealing assembly and rotates along with the rotor part in the sealing cavity formed by the pump cover, the part of the medium still contains more solid particles, the operation forms destructive abrasion on the pump cover, the medium is worn through in severe cases, and the medium is ejected out of the cavity.
The pump cover of the traditional centrifugal slurry pump is made of wear-resistant cast iron or wear-resistant alloy, the hardness of the pump cover is between HRC33 and HRC 58, and the service life of the worst grinding conveying pump cover is only 7 to 10 days according to the use experience; although designers have adopted high-hardness metal materials and thickened thicknesses, the service lives still cannot meet the requirement of a severe station for one maintenance period (3 months), frequent replacement of spare parts brings trouble to users, and high maintenance cost is also generated. The service life of the pump cover has become one of the key indexes of the quality of the centrifugal slurry pump, and how to increase the service life has puzzled designers for many years.
Disclosure of Invention
The utility model aims to solve the problem of short service life of the traditional centrifugal slurry pump cover, and provides a ceramic pump cover of a centrifugal slurry pump, which is suitable for long-term conveying of solid particle-containing media with higher abrasiveness.
The utility model aims at realizing the following technical scheme:
the utility model relates to a ceramic pump cover of a centrifugal slurry pump, which comprises a metal shell and a ceramic liner;
the middle part of the metal shell is a circular truncated cone-shaped cylindrical part, and annular connecting tables extend outwards axially at the two end opening parts of the circular truncated cone-shaped cylindrical part;
the ceramic liner is a cylindrical part with the shape matched with the shape of the metal shell and uniform wall thickness, a group of circumferentially uniformly distributed radially extending rectifying plates are arranged at the front end of the inner wall of the ceramic liner, and the inscribed circle diameter of each rectifying plate is matched with the diameter of the inner wall of the small port part of the ceramic liner;
the outer wall of the ceramic inner container is adhered to the inner cavity of the metal shell through resin glue.
The ceramic liner rectifying plate comprises a ceramic liner rectifying plate, wherein one side plate surface of the ceramic liner rectifying plate is a straight plate extending in the radial direction, the other side plate surface of the ceramic liner rectifying plate is a sloping plate converging forwards, and the sloping plate is positioned on the back side of the impeller in the rotation direction. The angle between the inclined plate and the straight plate is 15-30 degrees.
The inner wall of the annular connecting table at the rear end of the metal shell is provided with a group of rectangular positioning grooves uniformly distributed on the circumference, and the outer wall of the rear port part of the ceramic liner is provided with a rectangular positioning block matched with the rectangular positioning grooves of the metal shell.
Advantageous effects
According to the ceramic pump cover, the high-wear-resistance sintered ceramic material is embedded into the inner cavity of the metal shell, so that the wear resistance of the pump cover is improved, and the service life of the centrifugal slurry pump cover is greatly prolonged;
according to the ceramic pump cover, the rectifying plate structure is additionally arranged in the inner cavity to block the medium in the cavity of the pump cover from rotating, so that the scouring of the medium to the pump cover is reduced, and the service life of the centrifugal slurry pump cover is prolonged;
according to the ceramic pump cover, the inner cavity is of the truncated cone-shaped structure, the medium flows towards the volute along the truncated cone-shaped inner cavity under the action of centrifugal force, solid particles in the medium are prevented from accumulating in the sealing cavity to scour the pump cover, and therefore the service life of the centrifugal slurry pump cover is prolonged.
According to the ceramic pump cover, the metal shell and the ceramic liner are adhered by the resin adhesive, so that the ceramic pump cover has the advantages of compression resistance, wear resistance and scouring resistance, and the problem of short service life of the centrifugal slurry pump cover is solved.
Drawings
FIG. 1 is a schematic diagram of the structure of a ceramic pump cover of the present utility model;
in the figure, a metal shell, a 2-ceramic liner, a 3-rectifying plate, a 4-rectangular positioning groove and 5-resin glue are arranged.
Detailed Description
The present utility model will be further described with reference to the drawings and examples.
Examples
As shown in fig. 1, the ceramic pump cover of the centrifugal slurry pump comprises a metal shell 1 and a ceramic liner 2;
the middle part of the metal shell 1 is a circular truncated cone-shaped tubular piece, the opening parts at the two ends of the circular truncated cone-shaped tubular piece are axially outwards extended with annular connecting tables,
the ceramic liner 2 is a cylindrical part with the shape matched with the shape of the metal shell 1 and uniform wall thickness, a group of circumferentially uniformly distributed radially extending rectifying plates 3 are arranged at the front end of the inner wall of the ceramic liner 2, and the inscribed circle diameter of each rectifying plate 3 is matched with the diameter of the inner wall of the small port part of the ceramic liner 2;
the outer wall of the ceramic liner 2 is adhered to the inner cavity of the metal shell 1 through resin glue 5.
The ceramic liner 2 is characterized in that one side plate surface of the rectifying plate is a straight plate extending radially, the other side plate surface of the rectifying plate is a sloping plate converging forwards, and the sloping plate is positioned on the back side of the impeller in the rotation direction. The inclined plate and the straight plate form an angle of 20 degrees.
The inner wall of the annular connecting table at the rear end of the metal shell 1 is provided with a group of rectangular positioning grooves 4 uniformly distributed on the circumference, and the outer wall of the rear port part of the ceramic liner 2 is provided with a rectangular positioning block matched with the rectangular positioning grooves of the metal shell 1.
Claims (4)
1. A ceramic pump cover of a centrifugal slurry pump is characterized in that: comprises a metal shell and a ceramic liner;
the middle part of the metal shell is a circular truncated cone-shaped cylindrical part, and annular connecting tables extend outwards axially at the two end opening parts of the circular truncated cone-shaped cylindrical part;
the ceramic liner is a cylindrical part with the shape matched with the shape of the metal shell and uniform wall thickness, a group of circumferentially uniformly distributed radially extending rectifying plates are arranged at the front end of the inner wall of the ceramic liner, and the inscribed circle diameter of each rectifying plate is matched with the diameter of the inner wall of the small port part of the ceramic liner;
the outer wall of the ceramic inner container is adhered to the inner cavity of the metal shell through resin glue.
2. A ceramic pump cover for a centrifugal slurry pump as defined in claim 1, wherein: the ceramic liner rectifying plate comprises a ceramic liner rectifying plate, wherein one side plate surface of the ceramic liner rectifying plate is a straight plate extending in the radial direction, the other side plate surface of the ceramic liner rectifying plate is a sloping plate converging forwards, and the sloping plate is positioned on the back side of the impeller in the rotation direction.
3. A ceramic pump cover for a centrifugal slurry pump as defined in claim 2, wherein: the inclined plate and the straight plate of the ceramic liner rectifying plate form an angle of 15-30 degrees.
4. A ceramic pump cover for a centrifugal slurry pump according to any one of claims 1 to 3, characterized in that: the inner wall of the annular connecting table at the rear end of the metal shell is provided with a group of rectangular positioning grooves uniformly distributed on the circumference, and the outer wall of the rear port part of the ceramic liner is provided with a rectangular positioning block matched with the rectangular positioning grooves of the metal shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223193772.0U CN219012981U (en) | 2022-11-30 | 2022-11-30 | Ceramic pump cover of centrifugal slurry pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223193772.0U CN219012981U (en) | 2022-11-30 | 2022-11-30 | Ceramic pump cover of centrifugal slurry pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219012981U true CN219012981U (en) | 2023-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223193772.0U Active CN219012981U (en) | 2022-11-30 | 2022-11-30 | Ceramic pump cover of centrifugal slurry pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219012981U (en) |
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2022
- 2022-11-30 CN CN202223193772.0U patent/CN219012981U/en active Active
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