CN215319393U - Ceramic pump cover pouring die - Google Patents
Ceramic pump cover pouring die Download PDFInfo
- Publication number
- CN215319393U CN215319393U CN202120969682.2U CN202120969682U CN215319393U CN 215319393 U CN215319393 U CN 215319393U CN 202120969682 U CN202120969682 U CN 202120969682U CN 215319393 U CN215319393 U CN 215319393U
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- CN
- China
- Prior art keywords
- die
- pump cover
- metal framework
- lower die
- cover metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a ceramic pump cover pouring die which comprises a lower die, a middle die and an upper die; the lower die is inserted into the small end opening of the pump cover metal framework, and the lower connecting platform of the lower die is fixed with the small end opening of the pump cover metal framework through screws; the middle die is arranged in the inner cavity of the pump cover metal framework, and a connecting platform at the lower end opening part of the middle die is fixed with an upper connecting platform of the lower die through screws; the upper die is in threaded sleeve joint with the large end of the pump cover metal framework; and forming a pouring cavity by the outer wall of the upper end of the lower die, the outer wall of the middle die, the lower plate surface of the upper die annular connecting table and the inner cavity of the pump cover metal framework. The pump cover pouring mold disclosed by the utility model is simple in structure, convenient to disassemble and assemble, good in positioning accuracy of the mold, capable of ensuring consistent thickness of the silicon carbide ceramic inner liner after pouring and capable of improving the product quality.
Description
Technical Field
The utility model relates to a pouring die for a pump cover of a ceramic pump, and belongs to the field of manufacturing of ceramic pumps.
Background
When the pump is used for conveying a medium with high solid content, the pump cover is extremely easy to wear and short in service life, and the pump cover needs to be replaced repeatedly so as to ensure normal use of the pump. The pump maintenance costs are high.
One of the commonly adopted ways is to increase the thickness of the pump cover, which slightly prolongs the service life of the pump cover. And a spoiler is added in the inner cavity of the pump cover to reduce the flow velocity of the medium and reduce the abrasion. The first mode has limited increased thickness due to small space in the pump, and can only slightly prolong the service life of the pump cover. The second mode changes the original structure of the pump cover, and the product does not have interchangeability and has poor improvement effect.
The silicon carbide ceramic pump cover is a pump cover with a new structure, the pump cover is formed by lining a silicon carbide ceramic lining material in an overflowing area on the surface of a metal framework, and a medium contact part is silicon carbide ceramic, so that the silicon carbide ceramic pump cover has extremely strong corrosion resistance and abrasion resistance, the service life of the silicon carbide ceramic pump cover is 4-6 times that of a common metal pump cover, and the application field is very wide. The existing manufacturing method of the silicon carbide ceramic pump cover is to place the metal framework into a pouring mold and pour a silicon carbide ceramic lining material on the inner surface of the metal framework. However, when the traditional pouring mold is used for pouring, the structure is complex, the disassembly is complex, the positioning accuracy of the mold is poor, the consistency of the thickness of the silicon carbide ceramic lining layer after pouring is difficult to ensure, and the product quality is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems of complex structure, complex disassembly, poor positioning accuracy and the like of the traditional casting mold, and provides a casting mold for a pump cover of a ceramic pump.
The purpose of the utility model is realized by the following technical scheme:
the utility model discloses a pouring die for a pump cover of a ceramic pump, which comprises a lower die, a middle die and an upper die;
the middle part of the lower die is a cylindrical section with the outer diameter matched with the inner diameter of the small end of the pump cover, the upper end of the cylindrical section of the lower die extends inwards to form an upper connecting platform with a screw hole, and the lower end of the cylindrical section of the lower die extends outwards to form a lower connecting platform with a screw hole;
the middle die is of an inverted frustum-shaped cylinder structure, the shape of the middle die is matched with the inner shape of the inner cavity of the pump cover, and the lower end of the inverted frustum-shaped cylinder of the middle die is provided with a connecting table with a screw hole in an inward extending mode;
the upper die is of a cylindrical structure with the inner diameter matched with the outer diameter of the large end of the pump cover, connecting threads are processed on the inner wall of the upper die, an annular connecting table extends inwards from the upper end of the upper die, the inner diameter of the annular connecting table at the upper end of the upper die is not larger than the outer diameter of the upper end part of the inverted frustum-shaped cylinder body of the middle die, and a material injection hole is formed in the annular connecting table at the upper end of the upper die;
the lower die is inserted into the small end opening of the pump cover metal framework, and the lower connecting platform of the lower die is fixed with the small end opening of the pump cover metal framework through screws; the middle die is arranged in the inner cavity of the pump cover metal framework, and a connecting platform at the lower end opening part of the middle die is fixed with an upper connecting platform of the lower die through screws; the upper die is in threaded sleeve joint with the large end of the pump cover metal framework; and forming a pouring cavity by the outer wall of the upper end of the lower die, the outer wall of the middle die, the lower plate surface of the upper die annular connecting table and the inner cavity of the pump cover metal framework.
And the upper end of the lower die and the lower end of the middle die are processed with spigot structures which are matched with each other, so that the positioning accuracy of the lower die and the middle die is improved.
Advantageous effects
The pump cover pouring mold disclosed by the utility model is simple in structure, convenient to disassemble and assemble, good in positioning accuracy of the mold, capable of ensuring consistent thickness of the silicon carbide ceramic inner liner after pouring and capable of improving the product quality.
Drawings
FIG. 1 is a schematic structural view of a pump cover casting mold according to the present invention;
FIG. 2 is a schematic structural view of a lower die in the pump cover casting die of the present invention;
FIG. 3 is a schematic structural diagram of a middle mold in the pump cover casting mold according to the present invention;
FIG. 4 is a schematic structural view of an upper die in the pump cover casting mold according to the present invention;
FIG. 5 is a schematic structural view of a metal frame of a pump cover;
in the figure, 1-pump cover metal framework; 2-lower mould; 3-middle mold; and 4, forming an upper die.
Detailed Description
The utility model is further described with reference to the following figures and examples:
as shown in fig. 1, the pump cover pouring mold for the ceramic pump comprises a lower mold 2, a middle mold 3 and an upper mold 4;
as shown in fig. 2, the middle part of the lower die 2 is a cylindrical section with an outer diameter matched with the inner diameter of the small end of the pump cover, the upper end of the cylindrical section of the lower die 2 extends inwards to form an upper connecting platform with a screw hole, and the lower end of the cylindrical section of the lower die 2 extends outwards to form a lower connecting platform with a screw hole;
as shown in fig. 3, the middle mold 3 is an inverted frustum-shaped cylinder structure with the shape matched with the inner shape of the pump cover inner cavity, and the lower end of the inverted frustum-shaped cylinder of the middle mold 3 extends inwards to form a connecting table with a screw hole;
as shown in fig. 4, the upper die 4 is a cylindrical structure with an inner diameter matched with the outer diameter of the large end of the pump cover, a connecting thread is processed on the inner wall of the upper die 4, an annular connecting table extends inwards from the upper end of the upper die 4, the inner diameter of the annular connecting table at the upper end of the upper die 4 is not larger than the outer diameter of the upper end part of the inverted truncated cone-shaped cylinder body of the middle die 3, and a material injection hole is formed in the annular connecting table at the upper end of the upper die 4;
and the upper end of the lower die 2 and the lower end of the middle die 3 are processed with spigot structures which are matched with each other, so that the positioning accuracy of the upper end and the lower end is improved.
When the ceramic pump cover is machined, firstly, a pump cover metal framework 1 is machined, as shown in fig. 5, the shape of the pump cover metal framework 1 is matched with the shape size of the pump cover, the thickness of the inner shape of the pump cover metal framework 1 is reduced, machining allowance with screw holes is reserved at the small end part of the pump cover metal framework 1, and machining allowance with external threads is reserved on the outer wall of the large end of the pump cover metal framework 1.
During pouring, the lower die 2 is inserted into the small end opening of the pump cover metal framework 1, and the lower connecting platform of the lower die 2 is fixed with the small end opening of the pump cover metal framework 1 through screws; the middle die 3 is arranged in the inner cavity of the pump cover metal framework 1, and a connecting platform at the lower end opening part of the middle die 3 is fixed with an upper connecting platform of the lower die 2 through screws; the upper die 4 is in threaded sleeve joint with the large end of the pump cover metal framework 1; and forming a pouring cavity by the outer wall of the upper end of the lower die 2, the outer wall of the middle die 3, the lower plate surface of the annular connecting platform of the upper die 4 and the inner cavity of the pump cover metal framework 1.
And after the pouring is finished, the lower die 2, the middle die 3 and the upper die 4 are dismounted, and the machining allowance on the pump cover metal framework 1 is machined off to obtain the ceramic pump cover.
Claims (2)
1. The utility model provides a mould is pour to ceramic pump cover, characterized by: comprises a lower die, a middle die and an upper die;
the middle part of the lower die is a cylindrical section with the outer diameter matched with the inner diameter of the small end of the pump cover, the upper end of the cylindrical section of the lower die extends inwards to form an upper connecting platform with a screw hole, and the lower end of the cylindrical section of the lower die extends outwards to form a lower connecting platform with a screw hole;
the middle die is of an inverted frustum-shaped cylinder structure, the shape of the middle die is matched with the inner shape of the inner cavity of the pump cover, and the lower end of the inverted frustum-shaped cylinder of the middle die is provided with a connecting table with a screw hole in an inward extending mode;
the upper die is of a cylindrical structure with the inner diameter matched with the outer diameter of the large end of the pump cover, connecting threads are processed on the inner wall of the upper die, an annular connecting table extends inwards from the upper end of the upper die, the inner diameter of the annular connecting table at the upper end of the upper die is not larger than the outer diameter of the upper end part of the inverted frustum-shaped cylinder body of the middle die, and a material injection hole is formed in the annular connecting table at the upper end of the upper die;
the lower die is inserted into the small end opening of the pump cover metal framework, and the lower connecting platform of the lower die is fixed with the small end opening of the pump cover metal framework through screws; the middle die is arranged in the inner cavity of the pump cover metal framework, and a connecting platform at the lower end opening part of the middle die is fixed with an upper connecting platform of the lower die through screws; the upper die is in threaded sleeve joint with the large end of the pump cover metal framework; and forming a pouring cavity by the outer wall of the upper end of the lower die, the outer wall of the middle die, the lower plate surface of the upper die annular connecting table and the inner cavity of the pump cover metal framework.
2. The ceramic pump cover casting mold of claim 1, wherein: and the upper end of the lower die and the lower end of the middle die are processed with spigot structures which are matched with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120969682.2U CN215319393U (en) | 2021-05-05 | 2021-05-05 | Ceramic pump cover pouring die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120969682.2U CN215319393U (en) | 2021-05-05 | 2021-05-05 | Ceramic pump cover pouring die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215319393U true CN215319393U (en) | 2021-12-28 |
Family
ID=79597871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120969682.2U Expired - Fee Related CN215319393U (en) | 2021-05-05 | 2021-05-05 | Ceramic pump cover pouring die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215319393U (en) |
-
2021
- 2021-05-05 CN CN202120969682.2U patent/CN215319393U/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: 20211228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |