CN216407206U - Gas isolation sealing structure - Google Patents
Gas isolation sealing structure Download PDFInfo
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- CN216407206U CN216407206U CN202123102801.3U CN202123102801U CN216407206U CN 216407206 U CN216407206 U CN 216407206U CN 202123102801 U CN202123102801 U CN 202123102801U CN 216407206 U CN216407206 U CN 216407206U
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- connecting piece
- cavity
- motor
- lower connecting
- mechanical seal
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Abstract
The utility model discloses a gas isolation sealing structure which comprises a volute and a motor, wherein a lower connecting piece is arranged at the top end of the volute, an upper connecting piece is arranged at the top end of the lower connecting piece, the motor is arranged at the top end of the upper connecting piece, a motor shaft of the motor sequentially penetrates through the upper connecting piece and the lower connecting piece and extends into the volute, and a mechanical sealing structure is arranged on the motor shaft between the upper connecting piece and the lower connecting piece; the lower connecting piece is provided with a partition plate for sealing, an intermediate cavity is formed among the upper connecting piece, the lower connecting piece and the partition plate, engine oil is filled in the intermediate cavity, and a lower cavity is formed among the volute, the lower connecting piece and the partition plate. According to the submersible sewage pump, when water is pumped, the air of the lower cavity is sealed in the lower cavity, so that the sewage is not in contact with the lower end face of the mechanical seal, solid particles in the sewage are prevented from entering the friction face of the mechanical seal, and the sealing life of the submersible sewage pump is prolonged.
Description
Technical Field
The utility model relates to the technical field of submersible sewage pump sealing, in particular to a gas isolation sealing structure.
Background
The submersible sewage pump motor is of a dry structure, double-end-face mechanical seal is additionally arranged between the pump and the motor, and an oil isolation cavity is arranged between the pump and the motor. The lower side of the lower end face of the mechanical seal is in contact with a medium, namely sewage, conveyed by a pump, the upper side of the upper end face of the mechanical seal is provided with air, and the middle of the upper end face of the mechanical seal is provided with an oil isolation cavity. The lower side of the lower end face of the mechanical seal is in contact with a medium, namely sewage, conveyed by a pump, the pressure of the sewage is higher than that of the middle oil isolation cavity, the lower end face of the mechanical seal is in a sewage lubrication state, the lower end face of the mechanical seal is quickly out of work and leaks due to the fact that the sewage contains more solid particles, the sewage enters the oil isolation cavity, the upper end face of the mechanical seal is also out of work and leaks along with the sewage, the sewage enters the motor cavity, and the integral submersible sewage pump is out of work.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a gas isolation sealing structure to solve the problems in the prior art.
In order to achieve the purpose, the utility model provides the following technical scheme: a gas isolation sealing structure comprises a volute and a motor, wherein a lower connecting piece is arranged at the top end of the volute, an upper connecting piece is arranged at the top end of the lower connecting piece, the motor is arranged at the top end of the upper connecting piece, a motor shaft of the motor sequentially penetrates through the upper connecting piece and the lower connecting piece and extends into the volute, and a mechanical sealing structure is arranged on the motor shaft between the upper connecting piece and the lower connecting piece; the connecting structure is characterized in that a partition plate used for sealing is installed on the lower connecting piece, an intermediate cavity is formed among the upper connecting piece, the lower connecting piece and the partition plate, engine oil is filled in the intermediate cavity, a lower cavity is formed among the volute, the lower connecting piece and the partition plate, air is filled in the lower cavity, an upper cavity is formed between the motor and the upper connecting piece, and air is filled in the upper cavity.
Preferably, an oil filling port is formed in the upper connecting piece.
Preferably, the lower connecting piece and the volute casing are fixed through bolts, the upper connecting piece and the lower connecting piece are fixed through bolts, and the motor and the upper connecting piece are fixed through bolts.
Preferably, the mechanical seal structure comprises a mechanical seal upper end face and a mechanical seal lower end face, the mechanical seal upper end face is located at the upper connecting piece, and the mechanical seal lower end face is located at the lower connecting piece.
Preferably, the partition plate is fixed to the lower connecting member by bolts.
Compared with the prior art, the utility model has the beneficial effects that: a lower cavity is designed between the pump and the middle cavity, and when water is pumped in, the air of the lower cavity is sealed in the lower cavity, so that the sewage is not in contact with the lower end face of the mechanical seal, solid particles in the sewage are prevented from entering the friction face of the mechanical seal, and the sealing life of the submersible sewage pump is prolonged.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of a prior art structure.
In the figure: 1. a volute; 2. a lower connecting piece; 3. a mechanical seal structure; 4. an upper connecting piece; 5. a motor; 6. an upper cavity; 7. a middle cavity; 8. a lower cavity; 9. a partition plate; 10. a motor shaft; 31. the upper end surface of the mechanical seal; 32. and mechanically sealing the lower end face.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1, in the embodiment of the present invention, a gas isolation sealing structure includes a volute casing 1 and a motor 5, a lower connecting piece 2 is installed at a top end of the volute casing 1, an upper connecting piece 4 is installed at a top end of the lower connecting piece 2, the motor 5 is installed at a top end of the upper connecting piece 4, a motor shaft 10 of the motor 5 sequentially penetrates through the upper connecting piece 4 and the lower connecting piece 2 and extends to the interior of the volute casing 1, and a mechanical sealing structure 3 is installed on the motor shaft 10 located between the upper connecting piece 4 and the lower connecting piece 2; a partition plate 9 for sealing is mounted on the lower connecting piece 2, a middle cavity 7 is formed among the upper connecting piece 4, the lower connecting piece 2 and the partition plate 9, engine oil is filled in the middle cavity 7, a lower cavity 8 is formed among the volute 1, the lower connecting piece 2 and the partition plate 9, air is filled in the lower cavity 8, an upper cavity 6 is formed between the motor 5 and the upper connecting piece 4, and air is filled in the upper cavity 6; an oil injection port is formed in the upper connecting piece 4; the lower connecting piece 2 and the volute 1 are fixed through bolts, the upper connecting piece 4 and the lower connecting piece 2 are fixed through bolts, and the motor 5 and the upper connecting piece 4 are fixed through bolts; the mechanical seal structure 3 comprises a mechanical seal upper end face 31 and a mechanical seal lower end face 32, the mechanical seal upper end face 31 is positioned at the upper connecting piece 4, and the mechanical seal lower end face 32 is positioned at the lower connecting piece 2; the clapboard 9 is fixed on the lower connecting piece 2 through bolts; a lower cavity 8 is designed between the pump and the middle cavity 7, and when water is pumped in, the air of the lower cavity 8 is sealed in the lower cavity 8, so that the sewage is not contacted with the lower end surface 32 of the mechanical seal, and solid particles in the sewage are prevented from entering the friction surface of the mechanical seal.
The working principle of the utility model is as follows: a lower cavity 8 is designed between the pump and the middle cavity 7, and when water is pumped in, the air of the lower cavity 8 is sealed in the lower cavity 8, so that the sewage is not contacted with the lower end surface 32 of the mechanical seal, and solid particles in the sewage are prevented from entering the friction surface of the mechanical seal.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a gas isolation seal structure, includes spiral case (1) and motor (5), its characterized in that: a lower connecting piece (2) is installed at the top end of the volute (1), an upper connecting piece (4) is installed at the top end of the lower connecting piece (2), a motor (5) is installed at the top end of the upper connecting piece (4), a motor shaft (10) of the motor (5) sequentially penetrates through the upper connecting piece (4) and the lower connecting piece (2) and extends into the volute (1), and a mechanical sealing structure (3) is installed on the motor shaft (10) located between the upper connecting piece (4) and the lower connecting piece (2); install baffle (9) that are used for sealing down on connecting piece (2), go up connecting piece (4), be formed with middle cavity (7) down between connecting piece (2) and baffle (9), middle cavity (7) intussuseption is filled with machine oil, be formed with down cavity (8) between spiral case (1), lower connecting piece (2) and baffle (9), be the air in lower cavity (8), be formed with between motor (5) and last connecting piece (4) and go up cavity (6), go up the interior air that is of cavity (6).
2. A gas-isolating seal structure according to claim 1, wherein: an oil filling port is formed in the upper connecting piece (4).
3. A gas-isolating seal structure according to claim 1, wherein: the lower connecting piece (2) and the volute (1) are fixed through bolts, the upper connecting piece (4) and the lower connecting piece (2) are fixed through bolts, and the motor (5) and the upper connecting piece (4) are fixed through bolts.
4. A gas-isolating seal structure according to claim 1, wherein: the mechanical seal structure (3) comprises a mechanical seal upper end face (31) and a mechanical seal lower end face (32), the mechanical seal upper end face (31) is located at the upper connecting piece (4), and the mechanical seal lower end face (32) is located at the lower connecting piece (2).
5. A gas-isolating seal structure according to claim 1, wherein: the partition plate (9) is fixed on the lower connecting piece (2) through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123102801.3U CN216407206U (en) | 2021-12-07 | 2021-12-07 | Gas isolation sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123102801.3U CN216407206U (en) | 2021-12-07 | 2021-12-07 | Gas isolation sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216407206U true CN216407206U (en) | 2022-04-29 |
Family
ID=81283572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123102801.3U Active CN216407206U (en) | 2021-12-07 | 2021-12-07 | Gas isolation sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216407206U (en) |
-
2021
- 2021-12-07 CN CN202123102801.3U patent/CN216407206U/en active Active
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