CN222436649U - A mechanical seal dry running self-lubricating structure - Google Patents
A mechanical seal dry running self-lubricating structure Download PDFInfo
- Publication number
- CN222436649U CN222436649U CN202420239417.2U CN202420239417U CN222436649U CN 222436649 U CN222436649 U CN 222436649U CN 202420239417 U CN202420239417 U CN 202420239417U CN 222436649 U CN222436649 U CN 222436649U
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- China
- Prior art keywords
- mechanical seal
- rotating shaft
- impeller
- stationary ring
- connecting body
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 38
- 239000010687 lubricating oil Substances 0.000 claims abstract description 23
- 239000003921 oil Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 7
- 229920000459 Nitrile rubber Polymers 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 230000003068 static effect Effects 0.000 description 18
- 238000009837 dry grinding Methods 0.000 description 3
- 230000009182 swimming Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Mechanical Sealing (AREA)
Abstract
本实用新型属于机械密封技术领域，特指一种机械密封干运转自润滑结构，包括设置在叶轮和连接体之间的机械密封，所述连接体套装在转轴上，转轴穿过连接体连接叶轮，所述转轴上套装有密封连接体与转轴之间间隙的油封，机械密封左端与叶轮密封、右端与连接体密封，在机械密封与转轴之间形成密封腔室，密封腔室内设有润滑油。本实用新型在水泵干运转时能有效润滑、冷却机械密封，防止机械密封因干磨失效。
The utility model belongs to the technical field of mechanical seals, and particularly refers to a mechanical seal dry-running self-lubricating structure, comprising a mechanical seal arranged between an impeller and a connector, the connector being sleeved on a rotating shaft, the rotating shaft passing through the connector and connected to the impeller, the rotating shaft being sleeved with an oil seal for sealing the gap between the connector and the rotating shaft, the left end of the mechanical seal being sealed with the impeller, the right end being sealed with the connector, a sealed chamber being formed between the mechanical seal and the rotating shaft, and lubricating oil being arranged in the sealed chamber. The utility model can effectively lubricate and cool the mechanical seal when the water pump is dry-running, and prevent the mechanical seal from failing due to dry wear.
Description
Technical field:
the utility model belongs to the technical field of mechanical sealing, and particularly relates to a dry running self-lubricating structure of a mechanical seal.
The background technology is as follows:
As shown in fig. 1, the swimming pool pump comprises a pump body 1, an impeller 2 arranged in the pump body 1, and a connector 4 for connecting the pump body 1 and a motor 3, wherein a rotating shaft 5 of the motor 3 penetrates through the connector 4 to be connected with the impeller 2, a mechanical seal 6 sleeved on the rotating shaft 5 is arranged between the impeller 2 and the connector 4, and the mechanical seal 6 is lubricated and dissipates heat through water in the pump body 1.
The existing swimming pool pump has the defects that when the swimming pool pump is operated, the filter screen at the water inlet end is blocked and is not cleaned in time, so that the water in the pump body runs dry, the mechanical seal cannot be effectively lubricated and radiated, and the mechanical seal is damaged and fails.
The invention comprises the following steps:
The utility model aims to provide a mechanical seal dry running self-lubricating structure which can effectively lubricate and cool a mechanical seal when a water pump is in dry running and prevent the mechanical seal from losing efficacy due to dry grinding.
The utility model is realized in the following way:
The utility model provides a mechanical seal dry running self-lubricating structure, includes the mechanical seal that sets up between impeller and connector, the connector suit is in the pivot, and the pivot passes the connector and connects the impeller, the cover is equipped with the oil blanket in clearance between sealed connector and the pivot in the pivot, and mechanical seal left end is sealed with the impeller, right-hand member is sealed with the connector, forms sealed cavity between mechanical seal and pivot, is equipped with lubricating oil in the sealed cavity.
In the dry running self-lubricating structure of the mechanical seal, the mechanical seal comprises a stationary ring component arranged in the impeller and a movable ring component arranged in the connecting body, lubricating oil is arranged between the stationary ring component and the impeller and between the stationary ring component and the rotating shaft, and lubricating oil is arranged between the movable ring component and the rotating shaft.
In the mechanical seal dry running self-lubricating structure, the impeller is inwards concave near the end face of the connecting body to form an annular groove for installing a static ring assembly, the static ring assembly comprises a static ring and an L-shaped sealing gasket, the L-shaped sealing gasket is arranged on the periphery of the static ring in a surrounding mode, gaps between the static ring and the outer side wall of the annular groove and between the static ring and the inner end face of the annular groove are reserved, and lubricating oil is arranged between the L-shaped sealing gasket and the inner side wall of the annular groove, between the static ring and the inner side wall of the annular groove and between the static ring and the rotating shaft.
In the mechanical seal dry running self-lubricating structure, the static ring is made of silicon carbide, and the L-shaped sealing gasket is made of nitrile rubber.
In the dry running self-lubricating structure of the mechanical seal, the end face concave of the connecting body, which is close to the impeller, forms a first mounting groove for mounting the moving ring assembly and a second mounting groove for mounting the oil seal, the moving ring assembly comprises a moving ring, a mounting seat, a spring, a left spring seat, a right spring seat, a corrugated pipe and a sealing seat sleeve, the right end of the mounting seat is arranged in the first mounting groove, the sealing seat sleeve is L-shaped, a gap between the outer side wall of the sealing mounting seat and the first mounting groove and a gap between the inner end face of the mounting seat and the first mounting groove are formed, the left end of the mounting seat is sleeved with the moving ring, the moving ring and the right end of the mounting seat are provided with the corrugated pipe, the left end of the corrugated pipe is sleeved with the spring, the left end of the spring is abutted with the moving ring assembly through the left spring seat and the left end of the corrugated pipe, the right end of the spring seat is abutted with the moving ring assembly to seal, and the lubricating oil is arranged between the moving ring and the rotating shaft and between the mounting seat and the sealing seat and the rotating shaft.
In the mechanical seal dry running self-lubricating structure, the connecting body is provided with a convex edge in a protruding mode to one side far away from the impeller, and the convex edge is located on the right side of the mounting groove.
In the mechanical seal dry running self-lubricating structure, the movable ring is made of graphite, and the seal seat sleeve is made of nitrile rubber.
In the mechanical seal dry running self-lubricating structure, the oil seal is a framework oil seal or a rotating shaft lip-shaped oil seal.
Compared with the prior art, the utility model has the outstanding advantages that:
According to the utility model, a sealing chamber is formed between the mechanical seal and the rotating shaft, lubricating oil is arranged in the sealing chamber, and can effectively lubricate and cool the mechanical seal when the water pump runs dry, so that the mechanical seal is prevented from losing efficacy due to dry grinding, and the service life of the mechanical seal is effectively prolonged;
description of the drawings:
FIG. 1 is a cross-sectional view of the prior art;
FIG. 2 is a cross-sectional view of the present utility model;
FIG. 3 is an enlarged view at A of FIG. 2;
FIG. 4 is a cross-sectional view of the present utility model without lubrication oil;
FIG. 5 is an enlarged view at B of FIG. 4;
FIG. 6 is a cross-sectional view of the non-lubricated and mechanical seal of the present utility model;
fig. 7 is an enlarged view at C of fig. 6.
Reference numerals:
In figure 1, 1 part of the pump body, 2 parts of the impeller, 3 parts of the motor, 4 parts of the connector, 5 parts of the rotating shaft, 6 parts of the mechanical seal.
In fig. 2-7, 11, an impeller, 12, a connector, 13, a mechanical seal, 13a, a stationary ring, 13b, an L-shaped sealing gasket, 13c, a movable ring, 13d, a mounting seat, 13e, a spring, 13f, a left spring seat, 13g, a right spring seat, 13h, a corrugated pipe, 13i, a sealing seat sleeve, 14, a rotating shaft, 15, an oil seal, 16, a sealing cavity, 17, lubricating oil, 18, an annular groove, 19, a first mounting groove, 20, a second mounting groove, 21 and a convex edge.
The specific embodiment is as follows:
The utility model is further described below with reference to the specific examples, see fig. 2-7:
The utility model provides a mechanical seal dry running self-lubricating structure, includes the mechanical seal 13 that sets up between impeller 11 and connector 12, connector 12 suit is on pivot 14, and pivot 14 passes connector 12 and connects impeller 11, the cover is equipped with the oil blanket 15 in clearance between sealed connector 12 and the pivot 14 on the pivot 14, and mechanical seal 13 left end seals with impeller 11, right-hand member seals with connector 12, forms sealed cavity 16 between mechanical seal 13 and pivot 14, is equipped with lubricating oil 17 in the sealed cavity 16.
In the process of adding the lubricating oil 17, firstly, the connecting body 12 is sleeved on the rotating shaft 14, then the oil seal 15 is installed in the connecting body 12 and sleeved on the rotating shaft 14, then the moving ring component of the mechanical seal 13 is installed in the connecting body 12, then the lubricating oil 17 is filled between the moving ring component of the mechanical seal 13 and the rotating shaft 14, then the static ring component of the mechanical seal 13 is installed on the impeller 11, and finally the impeller 11 is screwed into the rotating shaft 14.
As shown in fig. 2-5, a sealing chamber 16 is formed between the mechanical seal 13 and the rotating shaft 14, lubricating oil 17 is arranged in the sealing chamber 16, and the lubricating oil 17 can effectively lubricate and cool the mechanical seal 13 during the dry running of the water pump, so that the mechanical seal 13 is prevented from losing efficacy due to dry grinding, and the service life of the mechanical seal 13 is effectively prolonged.
2-5, The mechanical seal 13 comprises a stationary ring assembly arranged in the impeller 11 and a movable ring assembly arranged in the connecting body 12, wherein lubricating oil 17 is arranged between the stationary ring assembly and the impeller 11 and between the stationary ring assembly and the rotating shaft 14, and the lubricating oil 17 is arranged between the movable ring assembly and the rotating shaft 14.
2-7, The impeller 11 is inwards concave near the end face of the connecting body 12 to form an annular groove 18 for installing the static ring assembly, the static ring assembly comprises a static ring 13a and an L-shaped sealing gasket 13b, the L-shaped sealing gasket 13b is arranged around the periphery of the static ring 13a, the L-shaped sealing gasket 13b seals a gap between the static ring 13a and the outer side wall of the annular groove 18 and a gap between the static ring 13a and the inner end face of the annular groove 18, and lubricating oil 17 is arranged between the L-shaped sealing gasket 13b and the inner side wall of the annular groove 18, between the static ring 13a and the inner side wall of the annular groove 18 and between the static ring 13a and the rotating shaft 14. Simple structure, the installation of being convenient for, and still ring subassembly and impeller 11 sealed effectual, prevent effectively that lubricating oil 17 from spilling.
Preferably, the material of the stationary ring 13a is silicon carbide, and the material of the L-shaped sealing pad 13b is nitrile rubber.
As shown in figures 2-7, the end face of the connecting body 12, which is close to the impeller 11, is concaved inwards to form a first mounting groove 19 for mounting the moving ring assembly and a second mounting groove 20 for mounting the oil seal 15, the moving ring assembly comprises a moving ring 13c, a mounting seat 13d, a spring 13e, a left spring seat 13f, a right spring seat 13g, a corrugated pipe 13h and a sealing seat sleeve 13i, the right end of the mounting seat 13d is arranged in the first mounting groove 19, the sealing seat sleeve 13i is L-shaped, a gap between the sealing mounting seat 13d and the outer side wall of the first mounting groove 19 and a gap between the mounting seat 13d and the inner end face of the first mounting groove 19 are formed, the left end of the mounting seat 13d is sleeved with the moving ring 13c, the right end of the moving ring 13c is sleeved with the right end of the mounting seat 13d, the left end of the spring 13e is sleeved with the left end of the corrugated pipe 13h, the left end of the spring 13e is abutted against the left end of the corrugated pipe 13h through the left spring seat 13f, the right end of the corrugated pipe 13h is abutted against the right end of the left spring seat 13g, a gap between the right end of the left end of the corrugated pipe 13h and the sealing seat 13h is abutted against the end of the rotating shaft 13c, and a rotating shaft 14 is arranged between the rotating shaft 17 and the rotating shaft 13d and the rotating shaft 17 and the rotating shaft 13. Simple structure, the installation of being convenient for, and the sealed effectual of moving ring subassembly and connector 12 prevents effectively that lubricating oil 17 from spilling.
In order to strengthen the strength of the connecting body 12 and facilitate processing of the second installation groove 20, a protruding edge 21 protrudes from the connecting body 12 to a side far away from the impeller 11, and the protruding edge 21 is located on the right side of the second installation groove 20.
Preferably, the material of the moving ring 13c is graphite, and the material of the sealing sleeve 13i is nitrile rubber.
Preferably, the oil seal 15 is a skeleton oil seal or a rotating shaft lip-shaped oil seal. In this embodiment, the oil seal 15 is a skeleton oil seal.
The above embodiments are only one of the preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model, so that all equivalent changes according to the shape, structure and principle of the present utility model are covered by the scope of the present utility model.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420239417.2U CN222436649U (en) | 2024-01-31 | 2024-01-31 | A mechanical seal dry running self-lubricating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420239417.2U CN222436649U (en) | 2024-01-31 | 2024-01-31 | A mechanical seal dry running self-lubricating structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222436649U true CN222436649U (en) | 2025-02-07 |
Family
ID=94399356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420239417.2U Active CN222436649U (en) | 2024-01-31 | 2024-01-31 | A mechanical seal dry running self-lubricating structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222436649U (en) |
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2024
- 2024-01-31 CN CN202420239417.2U patent/CN222436649U/en active Active
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| GR01 | Patent grant |