CN2575340Y - Vanes of centrifugal pressure fan and centrifugal pressure fan with the same vanes - Google Patents
Vanes of centrifugal pressure fan and centrifugal pressure fan with the same vanes Download PDFInfo
- Publication number
- CN2575340Y CN2575340Y CN 02257939 CN02257939U CN2575340Y CN 2575340 Y CN2575340 Y CN 2575340Y CN 02257939 CN02257939 CN 02257939 CN 02257939 U CN02257939 U CN 02257939U CN 2575340 Y CN2575340 Y CN 2575340Y
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- CN
- China
- Prior art keywords
- ring
- cooling cover
- lining
- seat
- rotating
- 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 - Lifetime
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Abstract
The utility model relates to a mechanical seal for pumps, which is used for solving the sealing problem of the pump used for conveying corrosive media. The mechanical seal comprises a stator ring and a rotating ring of which the end surfaces are attached, and a sealing ring is arranged between a rotating ring seat fixed to a main shaft and the rotating ring which is matched and connected with the rotating ring seat. The rear end of the stator ring is attached to a pushing ring, and the other end of a spring connected with the pushing ring is fixed by a spring seat. A rear radial groove of the stator ring which is loosely sheathed in a lining is embedded in a stator ring pin fixed in the lining, and a sealing ring is arranged between the stator ring and the lining. The lining matched and connected with the pushing ring is fixed to a cooling cover by a pressing ring, and the rear part of the cooling cover, in which the spring seat is arranged, is screwed and connected with a press cover. A sealing ring is arranged between the cooling cover and the spring seat, and a reinforced oil seal sheathed on a shaft sleeve is arranged in the spring seat. The utility model has the advantages of wide range of application, simple equipment structure, convenient installation and high corrosion resistance and has no need of being limited by cooled water sources. Besides of being used for conveying general media, the utility model can be used for conveying strong corrosive media and corrosive media containing lots of hard granules.
Description
Technical field
The utility model relates to a kind of mechanical seal for pump, is meant mobile equilibrium type mechanical seal in a kind of built-in type especially, is used to solve the sealing problem of the pump of carrying Korrosionsmedium.
Technical field
Chinese patent CN92220977 discloses " a kind of built-in type is forced cooling mechanical seal ", leakage rate when instead of pump particularly contains a large amount of hard particles medium at fed sheet of a media, packing seal and external mechanical seal that working life is short, its coolant jacket embeds in the seal end plate, and on seal end plate, have water intake and a water outlet, retainer is fixed on the step of axle, one end of stationary ring and throw-out collar are fitted, one end of spring then is connected with throw-out collar, seal by the stationary ring seal ring between stationary ring and the pump cover, seal by seal ring of moving ring between rotating ring and the retainer, thereby has good airproof performance, advantages such as long service life, the problem that exists is: 1, this structure only is suitable for using water quench, unconditionally or not allows to add the user under the situation of cooling water just can not use; 2, the nose balance function of stationary ring realizes by throw-out collar by six to eight springs, though be to make the pressure ratio that acts on the sealing surface more even in theory, adopt many springs after structure become complicated, also difficulty is installed; 3, this device is provided with the stationary seat that connects with stationary ring, between stationary ring and stationary seat sealing is arranged, and has increased leakage point one, and most of member of this structure also can only adopt the metal manufacturing, and corrosion resistance is relatively poor.
Summary of the invention
The utility model is just in order to overcome above-mentioned deficiency, and providing a kind of is having the internally mounted mechanical seal that all can use under the no-cooling-water situation, and it is simple in structure, good airproof performance and can be able to bear strong corrosion and wear-resisting.Improvements of the present utility model are to cancel stationary seat, the stationary ring pine is enclosed within the lining, lining is fixed on cooling cover by trim ring, this cooling cover can be designed to the cooling water interface or has the cooling cover of oil ga(u)ge at the situation that no-cooling-water is arranged, specifically implement like this: a kind of mechanical seal for pump, comprise rotating ring and stationary ring that end face fits, be equipped with seal ring between the rotating ring that is fixed on the rotating seat on the main shaft and connects with it, stationary ring rear end and throw-out collar are fitted, the spring the other end that is connected with throw-out collar is fixed by spring seat, it is characterized in that the rear portion radial groove that pine is placed in the stationary ring in the lining embeds in the stationary ring pin that is fixed in the lining, be provided with seal ring between stationary ring and the lining, the lining that connects with throw-out collar is fixed on the cooling cover by trim ring, the cooling cover rear portion built-in spring seat and the gland that spins, be provided with seal ring between cooling cover and the spring seat, also be provided with the outside framework oil seal that is placed on the axle sleeve in the spring seat.During work; rotating ring rotates with running shaft under the drive of rotating seat; its end face and stationary ring end face are fitted and slide relative mutually; thereby become the axle envelope and be end face seal; when the rotating ring rotation produces end face run-out or dynamic and static ring end wear; can compensate by the floating structure of dynamic and static ring and the spring force of stationary ring rear end; the dynamic and static ring end face is fitted tightly all the time; avoid dielectric leakage; the heat that while dynamic and static ring end face slide relative is produced is then fully cooled off by the cooling medium in the cooling cover; guarantee the smooth long term running of machine envelope, cooling medium is carried out sealing by the seal ring between the outside framework oil seal in the spring seat and spring seat and cooling cover gland.
Cooling cover of the present utility model can be made two kinds of interchangeable structures at different user, and having ready conditions for the user adds the occasion of cooling water, and the available cooling cover that has the cooling water interface is come mechanical seal is cooled off by cooling water; Unconditionally or not allow to add the occasion of cooling water for the user, can change the metal thin-wall cooling cover that has refueling bolt and oil ga(u)ge into, by the high temperature heat conductive oil of filling cooling cover the heat that the inner dynamic and static ring friction of mechanical seal is produced is derived, by the metal cooling cover heat radiation of outside, thereby widened using scope of the present utility model.
The utility model radially can not be offset owing to used lining, throw-out collar to be subjected to the restriction of lining, and this good matching relationship can make spring force more even, therefore can adopt single spring structure, makes device structure simple, and is easy for installation.
In order to be used to carry the Korrosionsmedium that contains a large amount of hard particles to improve corrosion resistance and wear resistance, rotating ring of the present utility model is made by SiC, rotating seat is by rotproofness is good, intensity is high and have the moulded glass steel moulding of good effect of heat insulation, rotating ring embeds in the boss of rotating seat by its radial groove, seal ring between rotating ring and the rotating seat adopts O type circle, be used for sealing and rotating ring is floated, to eliminate the rotating ring end face run-out that assembling and machining error are brought.The utility model is not established stationary seat, and stationary ring is made integral structure by SiC, has avoided the leakage between stationary ring and the stationary seat, need not to consider the corrosion-resistant problem of stationary seat yet.Stationary ring is by in two stationary ring pins in two radial groove inlay bushers at rear portion, prevent its rotation, the stationary ring rear end imposes spring force by throw-out collar to stationary ring by a spring, makes stationary ring have the nose balance function, the end face of guaranteeing dynamic and static ring fits tightly all the time, stops the leakage of medium.
The utility model is just by the cancellation stationary seat, set up the cooling cover of interchangeable structure, use the Applicable scope of pump of this mechanical seal wider, need not to be subjected to the restriction of cooling water source, adopt single spring balancing structure simultaneously, simplified device structure, made things convenient for installation,, improved corrosion resistance the change of materials such as dynamic and static ring, except that can be used for carrying the general medium, more can be used for the Korrosionsmedium of carrying strong corrosive media and containing a large amount of hard particles.
Description of drawings
Fig. 1 is the utility model embodiment 1 a structural representation.
Fig. 2 is the utility model embodiment 2 a structural representation.
Embodiment
Claims (8)
1. mechanical seal for pump, comprise rotating ring and stationary ring that end face fits, be equipped with seal ring between the rotating ring that is fixed on the rotating seat on the main shaft and connects with it, stationary ring rear end and throw-out collar are fitted, the spring the other end that is connected with throw-out collar is fixed by spring seat, it is characterized in that the rear portion radial groove that pine is placed in the stationary ring in the lining embeds in the stationary ring pin that is fixed in the lining, be provided with seal ring between stationary ring and the lining, the lining that connects with throw-out collar is fixed on the cooling cover by trim ring, the cooling cover rear portion built-in spring seat and the gland that spins, be provided with seal ring between cooling cover and the spring seat, also be provided with the outside framework oil seal that is placed on the axle sleeve in the spring seat.
2. mechanical seal according to claim 1 is characterized in that being equipped with on the cooling cover cooling water interface.
3. mechanical seal according to claim 1 is characterized in that cooling cover is the metal thin-wall cooling cover that has refueling bolt and oil ga(u)ge, fills high temperature heat conductive oil in the described cooling cover.
4. according to claim 1,2, one of 3 described mechanical seals, it is characterized in that the spring that is connected with throw-out collar is single spring structure.
5. mechanical seal according to claim 1 is characterized in that the radial groove that rotating ring passes through on it embeds in the boss of rotating seat.
6. mechanical seal according to claim 1 is characterized in that the seal ring between seal ring, spring seat and the cooling cover gland between seal ring, stationary ring and the lining between rotating ring and the rotating seat is O type circle.
7. mechanical seal according to claim 1 is characterized in that the material of rotating ring and stationary ring is SiC.
8. mechanical seal according to claim 1, the material that it is characterized in that rotating seat is a glass fibre reinforced plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02257939 CN2575340Y (en) | 2002-10-21 | 2002-10-21 | Vanes of centrifugal pressure fan and centrifugal pressure fan with the same vanes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02257939 CN2575340Y (en) | 2002-10-21 | 2002-10-21 | Vanes of centrifugal pressure fan and centrifugal pressure fan with the same vanes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2575340Y true CN2575340Y (en) | 2003-09-24 |
Family
ID=33725790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02257939 Expired - Lifetime CN2575340Y (en) | 2002-10-21 | 2002-10-21 | Vanes of centrifugal pressure fan and centrifugal pressure fan with the same vanes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2575340Y (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346077C (en) * | 2005-01-25 | 2007-10-31 | 烟台瑞龙泵业制造有限公司 | Akaline pump sealing device |
| WO2008006272A1 (en) * | 2006-07-06 | 2008-01-17 | Xuezhong Jiang | An anti-leakage seal assembly of a water pump |
| CN102102685A (en) * | 2010-10-08 | 2011-06-22 | 溧阳平陵林机有限公司 | Permeable cover sealing structure of fan shaft |
| CN102182701A (en) * | 2011-05-31 | 2011-09-14 | 安徽凯特泵业有限公司 | Mechanical seal |
| CN102562648A (en) * | 2011-12-22 | 2012-07-11 | 安徽江南泵阀有限公司 | Anti-lock mechanical sealing structure for built-in type fluoroplastic pump |
| CN102606519A (en) * | 2012-03-27 | 2012-07-25 | 上海阿波罗机械股份有限公司 | Boric acid recirculation pump |
| CN102913476A (en) * | 2012-11-12 | 2013-02-06 | 黄显志 | Bidirectional sealing device of centrifugal pump |
| CN103591043A (en) * | 2013-11-25 | 2014-02-19 | 陆川县志强电机厂 | Mechanical sealing sand pump |
| CN104358705A (en) * | 2014-11-05 | 2015-02-18 | 安徽江南泵阀有限公司 | Cartridge mechanical sealing device for abrasion-resistant pump |
| CN104533827A (en) * | 2015-01-12 | 2015-04-22 | 大连华阳密封股份有限公司 | Mechanical seal suitable for ANSI standard pump cavity |
| CN104696524A (en) * | 2015-02-13 | 2015-06-10 | 江苏科奥流体科技有限公司 | Mechanical sealing structure of hot water pump |
| CN115045831A (en) * | 2022-06-23 | 2022-09-13 | 芜湖市中天密封件有限公司 | Dynamic temperature-regulating mechanical sealing element of asphalt pump and assembling method thereof |
-
2002
- 2002-10-21 CN CN 02257939 patent/CN2575340Y/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346077C (en) * | 2005-01-25 | 2007-10-31 | 烟台瑞龙泵业制造有限公司 | Akaline pump sealing device |
| WO2008006272A1 (en) * | 2006-07-06 | 2008-01-17 | Xuezhong Jiang | An anti-leakage seal assembly of a water pump |
| CN102102685A (en) * | 2010-10-08 | 2011-06-22 | 溧阳平陵林机有限公司 | Permeable cover sealing structure of fan shaft |
| CN102182701A (en) * | 2011-05-31 | 2011-09-14 | 安徽凯特泵业有限公司 | Mechanical seal |
| CN102562648A (en) * | 2011-12-22 | 2012-07-11 | 安徽江南泵阀有限公司 | Anti-lock mechanical sealing structure for built-in type fluoroplastic pump |
| CN102606519B (en) * | 2012-03-27 | 2013-10-30 | 上海阿波罗机械股份有限公司 | Boric acid recirculation pump |
| CN102606519A (en) * | 2012-03-27 | 2012-07-25 | 上海阿波罗机械股份有限公司 | Boric acid recirculation pump |
| CN102913476A (en) * | 2012-11-12 | 2013-02-06 | 黄显志 | Bidirectional sealing device of centrifugal pump |
| CN103591043A (en) * | 2013-11-25 | 2014-02-19 | 陆川县志强电机厂 | Mechanical sealing sand pump |
| CN104358705A (en) * | 2014-11-05 | 2015-02-18 | 安徽江南泵阀有限公司 | Cartridge mechanical sealing device for abrasion-resistant pump |
| CN104358705B (en) * | 2014-11-05 | 2016-08-24 | 安徽江南泵阀有限公司 | A kind of corrosion-resistant integrated mechanical sealing device for pump |
| CN104533827A (en) * | 2015-01-12 | 2015-04-22 | 大连华阳密封股份有限公司 | Mechanical seal suitable for ANSI standard pump cavity |
| CN104696524A (en) * | 2015-02-13 | 2015-06-10 | 江苏科奥流体科技有限公司 | Mechanical sealing structure of hot water pump |
| CN115045831A (en) * | 2022-06-23 | 2022-09-13 | 芜湖市中天密封件有限公司 | Dynamic temperature-regulating mechanical sealing element of asphalt pump and assembling method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20121021 Granted publication date: 20030924 |