CN201236835Y - Gas seal structure of protection bearing for screw pump - Google Patents
Gas seal structure of protection bearing for screw pump Download PDFInfo
- Publication number
- CN201236835Y CN201236835Y CNU2008200423951U CN200820042395U CN201236835Y CN 201236835 Y CN201236835 Y CN 201236835Y CN U2008200423951 U CNU2008200423951 U CN U2008200423951U CN 200820042395 U CN200820042395 U CN 200820042395U CN 201236835 Y CN201236835 Y CN 201236835Y
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- bearing
- air inlet
- links
- sealing seat
- compressed air
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Abstract
An atmoseal structure is used by a propeller pump to protect a bearing. The atmoseal structure comprises the bearing (6), a bearing pedestal (2), a bearing gland (3) and a sealing support (1); one end of the bearing pedestal (2) is connected with the bearing gland (3); the other end of the bearing pedestal (2) is connected with one end of the sealing support (1); the other end of the sealing support (1) is connected with a mixing box (4); and a seal ring is installed between a screw shaft (5) and the sealing support (1). The atmoseal structure is characterized in that the sealing support (1) and the bearing gland (3) are respectively provided with compressed air intakes connected with an air inlet unit. The utility model has the advantages of simple structure, safety and reliability, and greatly prolongs the service life of the bearing.
Description
Technical field
The utility model relates to a kind of bearing protection device, the bearing protection device of the pneumatic transport equipment that especially a kind of dust is bigger, specifically a kind of volute pump air seal structure of protection bearing.
Background technique
Volute pump is the key equipment in the pneumatic transport equipment, because its working medium mostly is powder grain material greatly, be easy to enter between the mechanical friction parts at dust under the strength effect during work, for example, bearing is exactly a kind of modal motion support unit, if there is dust to enter in the bearing, then under the effect of dust, be easy to damage, influence machine life, therefore the sealing of bearing is very important, for this class bearing, powder enters the content except the shell from bearing, the topmost channel that enters is to enter in the bearing support vertically, and this also is difficult to prevent at present, influence the maximum difficult point of bearing life, commonly used is that lip-type packing is installed on screw axis at present, but lip-type packing in use for some time can be owing to wearing and tearing can influence sealing effect, all kinds of dust will enter in the bearing support along the gap after the wearing and tearing, to this, still do not have good solution at present.
Summary of the invention
The purpose of this utility model is to be subject to contamination by dust and to influence the problem in life-span at the bigger volute pump bearing of present work dust, designs a kind of dust that can effectively prevent and enters volute pump in the bearing support with the air seal structure of protection bearing.
The technical solution of the utility model is:
A kind of volute pump air seal structure of protection bearing; comprise bearing, bearing support, bearing gland and sealing seat; one end of bearing support links to each other with bearing gland; the other end of bearing support links to each other with an end of sealing seat; the other end of sealing seat links to each other with mixing box; between screw axis and sealing seat seal ring is installed, it is characterized in that being equipped with compressed air inlet port on described sealing seat and the bearing gland, described compressed air inlet port all links to each other with air inlet system.
Described air inlet system mainly is made up of pressure regulation filter, orifice meter, grade one filter, secondary filter; The input end of pressure regulation filter links to each other with source of the gas, its output terminal links to each other with the input end of orifice meter, the output terminal of orifice meter links to each other with the input end of grade one filter and the compressed air inlet port on the sealing seat respectively by pipeline, thereby the pressurized air that will be higher than system's discharge pressure is sent in the sealing seat, the output terminal of grade one filter links to each other with the input end of secondary filter, the output terminal of secondary filter links to each other with compressed air inlet port on the bearing gland by connecting tube, thereby the pressurized air that will be higher than system's discharge pressure is sent in the bearing support.
Described sealing seat is provided with two compressed air inlet ports, and one of them compressed air inlet port is between seal ring, and another compressed air inlet port communicates between seal ring and bearing support and with the inner chamber of sealing seat.
The beneficial effects of the utility model:
The utility model has solved rugged environment preferably, the protection problem of dust atmosphere lower bearing especially, and it is blocked in dust outside the sealing seat by reaction principle, and it can not be entered in the bearing support vertically.
The utility model is simple in structure, and is safe and reliable, can prolong the working life of bearing greatly.
The utility model has adopted three grades of sealing glands, has improved leakage efficiency and performance greatly.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
As shown in Figure 1.
A kind of volute pump air seal structure of protection bearing; comprise bearing 6; bearing support 2; bearing gland 3 and sealing seat 1; one end of bearing support 2 links to each other with bearing gland 3; the other end of bearing support 2 links to each other with an end of sealing seat 1; the other end of sealing seat 1 links to each other with mixing box 4; between screw axis 5 and sealing seat 1, seal ring 7 is installed; be equipped with compressed air inlet port on described sealing seat 11 and the bearing gland 3; described compressed air inlet port all links to each other with air inlet system; in bearing support 2, charge into the pressurized air that is higher than system's discharge pressure (being the air pressure in the mixing box 4) by air inlet system, to guarantee that powder grain material in the mixing box 4 can not enter sealing seat 1 vertically and enter in the bearing support 2 and destroy bearing 6.Described air inlet system can adopt common air inlet system, also can adopt air inlet system shown in Figure 1, and it mainly is made up of pressure regulation filter 8, orifice meter 9, grade one filter 11, secondary filter 12; The input end of pressure regulation filter 8 links to each other with source of the gas, its output terminal links to each other with the input end of orifice meter 9, the output terminal of orifice meter 9 links to each other with the input end of grade one filter 11 and the compressed air inlet port on the sealing seat 1 respectively by pipeline 10, thereby the pressurized air that will be higher than system's discharge pressure is sent in the sealing seat 1, the output terminal of grade one filter 11 links to each other with the input end of secondary filter 12, the output terminal of secondary filter 12 links to each other with compressed air inlet port on the bearing gland 3 by connecting tube, thereby the pressurized air that will be higher than system's discharge pressure is sent in the bearing support 2, the effect of pressure regulation filter 8 (model can be AC300) wherein is the compressed-air actuated pressure that is used to set sealing gland, orifice meter 9 (its structure is for getting out the hole of corresponding size according to the flow size on plectane) is to be used for guaranteeing the compressed-air actuated discharge stability of sealing gland, and grade one filter 11 (model can be BC3000) and secondary filter 12 (model can be BC4000) mainly are to be used for preventing that the compressed-air actuated secondary pollution of sealing gland from causing the destruction to bearing.In order to improve the sealing effect of sealing seat 1, during concrete enforcement two compressed air inlet ports can be set on sealing seat 1, one of them compressed air inlet port is between seal ring 7, and another compressed air inlet port communicates between seal ring 7 and bearing support 1 and with the inner chamber of sealing seat 1.
The utility model does not relate to the part prior art that maybe can adopt all same as the prior art to be realized.
Claims (3)
1, a kind of volute pump air seal structure of protection bearing; comprise bearing (6), bearing support (2), bearing gland (3) and sealing seat (1); one end of bearing support (2) links to each other with bearing gland (3); the other end of bearing support (2) links to each other with an end of sealing seat (1); the other end of sealing seat (1) links to each other with mixing box (4); between screw axis (5) and sealing seat (1), seal ring (7) is installed; it is characterized in that being equipped with compressed air inlet port on described sealing seat (11) and the bearing gland (3), described compressed air inlet port all links to each other with air inlet system.
2, volute pump according to claim 1 is with the air seal structure of protection bearing, it is characterized in that described air inlet system mainly is made up of pressure regulation filter (8), orifice meter (9), grade one filter (11), secondary filter (12); The input end of pressure regulation filter (8) links to each other with source of the gas, its output terminal links to each other with the input end of orifice meter (9), the output terminal of orifice meter (9) links to each other with the input end of grade one filter (11) and the compressed air inlet port on the sealing seat (1) respectively by pipeline (10), thereby the pressurized air that will be higher than system's discharge pressure is sent in the sealing seat (1), the output terminal of grade one filter (11) links to each other with the input end of secondary filter (12), the output terminal of secondary filter (12) links to each other with compressed air inlet port on the bearing gland (3) by connecting tube, thereby the pressurized air that will be higher than system's discharge pressure is sent in the bearing support (2).
3, the volute pump according to claim 1 air seal structure of protection bearing; it is characterized in that described sealing seat (1) is provided with two compressed air inlet ports; one of them compressed air inlet port is positioned between the seal ring (7), and another compressed air inlet port is positioned between seal ring (7) and the bearing support (1) and with the inner chamber of sealing seat (1) and communicates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200423951U CN201236835Y (en) | 2008-08-08 | 2008-08-08 | Gas seal structure of protection bearing for screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200423951U CN201236835Y (en) | 2008-08-08 | 2008-08-08 | Gas seal structure of protection bearing for screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201236835Y true CN201236835Y (en) | 2009-05-13 |
Family
ID=40649575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200423951U Expired - Fee Related CN201236835Y (en) | 2008-08-08 | 2008-08-08 | Gas seal structure of protection bearing for screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201236835Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087560A (en) * | 2017-12-13 | 2018-05-29 | 马鞍山市荣亿密封材料有限责任公司 | A kind of high-performance cavity type shaft end air seal structure |
-
2008
- 2008-08-08 CN CNU2008200423951U patent/CN201236835Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087560A (en) * | 2017-12-13 | 2018-05-29 | 马鞍山市荣亿密封材料有限责任公司 | A kind of high-performance cavity type shaft end air seal structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090513 Termination date: 20160808 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |