CN208845370U - A kind of centrifugal pump with water-cooled pump cover and sealing gland - Google Patents
A kind of centrifugal pump with water-cooled pump cover and sealing gland Download PDFInfo
- Publication number
- CN208845370U CN208845370U CN201821598985.2U CN201821598985U CN208845370U CN 208845370 U CN208845370 U CN 208845370U CN 201821598985 U CN201821598985 U CN 201821598985U CN 208845370 U CN208845370 U CN 208845370U
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- CN
- China
- Prior art keywords
- pump cover
- impeller
- pump
- bearing
- housing
- 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 kind of centrifugal pump with water-cooled pump cover and sealing gland, it is characterized by: the centrifugal pump includes the pump housing, the pump housing is connected with pump cover, pump cover is then connected with bearing housing, rotational support has impeller shaft in bearing housing, one end of impeller shaft is located at outside bearing housing, the other end is then connected with impeller, and the impeller is located at the pump housing and pump cover is formed by cavity, on the shaft part for the impeller shaft being located in bearing housing, it is disposed with seal assembly, the single row angular contact ball bearing of single-row centripetal bearing and two positive and negative settings each other, the adjusting nut to match with described two single row angular contact ball bearings is also threaded in impeller shaft, and cooperated between the adjusting nut and impeller shaft using fine thread, the impeller is connected to the end of impeller shaft by impeller fastening nut and gasket, institute It states and is additionally provided with outside framework oil seal at the bearing gland of bearing housing two ends of the bearing hole.
Description
Technical field
The utility model relates to centrifugal pump field, especially a kind of centrifugal pump with water-cooled pump cover and sealing gland.
Background technique
In general, it when 120 DEG C of delivery temperature < of liquid medium, is not required to carry out Cooling Design at pump cover.If conveying
One cooling jacket structure of special designing is just needed when the liquid of temperature >=120 DEG C, at pump cover.Previous pump cover Cooling Design are as follows: pump
Axial seal is realized using surface groove O-ring between lid and bearing housing, radial seal is realized using radial groove O-ring,
But it because decrement is big when O-ring radial seal, easily squeezes sealing ring bad, therefore poorly sealed situation occurs；Every dismounting
Once just need replacing an O-ring, not only assembly difficulty, but also cost of idleness.
Meanwhile traditional centrifugal pump only considers cooling at pump cover, does not account for the cooling at sealing gland but, actually
It cannot achieve sufficient coolant seal.
Summary of the invention
The utility model is to propose that a kind of structure is simple to solve above-mentioned deficiency present in the prior art, and design is skilful
It is wonderful, pumping the centrifugal pump that cooling and sealing structure is both provided at this and at sealing gland.
The technical solution of the utility model is: a kind of centrifugal pump with water-cooled pump cover and sealing gland, special
Sign is: the centrifugal pump includes the pump housing 1, and the pump housing 1 is connected with pump cover 2, and pump cover 2 is then connected with bearing housing 3, in bearing housing 3
Interior rotational support has impeller shaft 4, and one end of impeller shaft 4 is located at outside bearing housing 3, and the other end is then connected with impeller 5, and described
Impeller 5 is located at the pump housing 1 and pump cover 2 is formed by cavity, on the shaft part for the impeller shaft 4 being located in bearing housing 3, sets gradually
There is the single row angular contact ball bearing 8 of seal assembly 6, single-row centripetal bearing 7 and two positive and negative settings each other, in impeller shaft 4
Also be threaded with described two single row angular contact ball bearings 8 match adjusting nut 9, and the adjusting nut 9 with
Cooperated between impeller shaft 4 using fine thread, the impeller 5 is connected to impeller shaft by impeller fastening nut 10 and gasket 11
4 end is additionally provided with outside framework oil seal at the bearing gland 12 of 3 two ends of the bearing hole of bearing housing,
The first seal groove 13 and the second seal groove 14 are respectively arranged on the two sides of the pump cover 2, described first is close
Sealing groove 13 is located at the large end face of pump cover 2, and the second seal groove 14 is then located at the small end face of pump cover 2, and first sealing
Rubber o-ring is provided in slot 13 and the second seal groove 14, while first seal groove 13 and the second seal groove 14 has
The common center of circle,
Also mutually it is furnished with sealing gland 15 with the pump cover 2, and the sealing gland 15 is located at pump cover 2 towards bearing housing 3
One end, the sealing gland 15 includes gland body 16, and the tail portion of gland body 16 is welded with end plate 17, gland body 16 and end plate 17
The collet chamber of cooling water is collectively formed, is also set up on the circumference of gland body 16 there are three interface 18, these three interfaces 18 are distinguished
For flushing interface, cooling water inlet and cooling water outlet, and the interface 18 is connected with the collet chamber of cooling water.
The utility model compared with the existing technology, has the advantages that
The centrifugal pump with water-cooled pump cover and sealing gland of this kind of structure type, the two sides (bearing housing of pump cover
Radial positioning hole is in positioning endface) be provided with the seal groove of twice axial direction, and using the O-ring of two rubber material come pair
Pump cover collet chamber and bearing housing carry out the sealing of end face, to form closed cooling jacket；
Meanwhile the sealing gland part being connected with pump cover is also equipped with water-cooling structure, in the collet chamber in sealing gland
It can be passed through cooling water, be used cooperatively with the cooling system of pump cover, cooling overall length is about that pump cover seal chamber bottom to rear road seals
Stationary ring tail portion distance, film-cooled heat is larger, and the circulation face of sealing gland cooling water is located exactly at mechanical seal friction
Around pair, the high temperature of sealed friction surface can be effectively quickly cooled down, the possibility of vaporization is eliminated, allows between sealing surface and protect
Hold the liquid film of achievable good lubrication, to improve sealing service life.
At the same time, pump cover is cooling and sealing gland is cooling can play heat-insulated effect again, allow and pump intracorporal high temperature
The heat of liquid can not pass to bearing housing, cool the lubricating oil in bearing bore indirectly, reduce the temperature of bearing, prolong
The service life of bearing is grown.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment.
Fig. 2 is the structural schematic diagram of pump cover portion in the utility model embodiment.
Fig. 3 is the main view of sealing gland part in the utility model embodiment.
Fig. 4 is the side view of sealing gland part in the utility model embodiment.
Specific embodiment
Below in conjunction with Detailed description of the invention specific embodiment of the present utility model.It is as shown in Figure 1, Figure 2, Figure 3, Figure 4: a kind of
Centrifugal pump with water-cooled pump cover and sealing gland, it includes the pump housing 1, and the pump housing 1 is connected with pump cover 2, pump cover 2 then with bearing housing
3 are connected, and rotational support has impeller shaft 4 in bearing housing 3, and one end of impeller shaft 4 is located at outside bearing housing 3, and the other end then connects
There is impeller 5, and the impeller 5 is located at the pump housing 1 and pump cover 2 is formed by cavity, in the impeller shaft 4 being located in bearing housing 3
Shaft part on, be disposed with the single row angular contact ball of seal assembly 6, single-row centripetal bearing 7 and two positive and negative settings each other
Bearing 8 is also threaded with the adjusting nut 9 to match with described two single row angular contact ball bearings 8 in impeller shaft 4, and
Cooperated between the adjusting nut 9 and impeller shaft 4 using fine thread, the impeller 5 passes through impeller fastening nut 10 and close
Packing 11 is connected to the end of impeller shaft 4, and skeleton oil is additionally provided at the bearing gland 12 of 3 two ends of the bearing hole of bearing housing
Envelope,
The first seal groove 13 and the second seal groove 14 are respectively arranged on the two sides of the pump cover 2, described first is close
Sealing groove 13 is located at the large end face of pump cover 2, and the second seal groove 14 is then located at the small end face of pump cover 2, and first sealing
Rubber o-ring is provided in slot 13 and the second seal groove 14, while first seal groove 13 and the second seal groove 14 has
The common center of circle,
Also mutually it is furnished with sealing gland 15 with the pump cover 2, and the sealing gland 15 is located at pump cover 2 towards bearing housing 3
One end, the sealing gland 15 includes gland body 16, and the tail portion of gland body 16 is welded with end plate 17, gland body 16 and end plate 17
The collet chamber of cooling water is collectively formed, is also set up on the circumference of gland body 16 there are three interface 18, these three interfaces 18 are distinguished
For flushing interface, cooling water inlet and cooling water outlet, and the interface 18 is connected with the collet chamber of cooling water.
The utility model embodiment has the centrifugal pump of water-cooled pump cover and sealing gland at work, due to its pump cover
2 are provided with two seals slot (the first seal groove 13 and the second seal groove 14) at the positioning of bearing housing 3, and in seal groove
It is provided with rubber o-ring, this structure is revised as axis while realizing end face seal, by traditional second radial seal
To the design of sealing, to form closed cooling jacket；
Meanwhile the sealing gland part being connected with pump cover is also equipped with water-cooling structure, in the collet chamber in sealing gland
It can be passed through cooling water, be used cooperatively with the cooling system of pump cover, cooling overall length is about that pump cover seal chamber bottom to rear road seals
Stationary ring tail portion distance, film-cooled heat is larger, and the circulation face of sealing gland cooling water is located exactly at mechanical seal friction
Around pair, the high temperature of sealed friction surface can be effectively quickly cooled down, the possibility of vaporization is eliminated, allows between sealing surface and protect
Hold the liquid film of achievable good lubrication, to improve sealing service life.
In the collet chamber that gland body 16 and end plate 17 are collectively formed, cooling water low in and high out can be arranged intracavitary gas
Out, while cooling water is also convenient for full of cavity；
The centrifugal pump with water-cooled pump cover and sealing gland of this kind of structure type, design is rationally, easy to assembly, close
It is cooling to seal chamber overall length, film-cooled heat is big, in the occasion that pump cover need to cool down, makes by the combination that pump cover is cooling and sealing gland is cooling
With, it plays a multiplier role, extends the service life of sealing, thus extend the cycle of oparation of equipment.
Claims (1)
1. a kind of centrifugal pump with water-cooled pump cover and sealing gland, it is characterised in that: the centrifugal pump includes the pump housing
(1), the pump housing (1) is connected with pump cover (2), and pump cover (2) is then connected with bearing housing (3), and in bearing housing (3), interior rotational support has impeller
Axis (4), one end of impeller shaft (4) are located at bearing housing (3) outside, and the other end is then connected with impeller (5), and the impeller (5)
It is formed by cavity positioned at the pump housing (1) and pump cover (2), on the shaft part for the impeller shaft (4) being located in bearing housing (3), successively
It is provided with the single row angular contact ball bearing (8) of seal assembly (6), single-row centripetal bearing (7) and two positive and negative settings each other,
The adjusting nut (9) to match with described two single row angular contact ball bearings (8), and institute are also threaded in impeller shaft (4)
Cooperated between the adjusting nut (9) stated and impeller shaft (4) using fine thread, the impeller (5) passes through impeller fastening nut
(10) and gasket (11) is connected to the ends of impeller shaft (4), in the bearing gland (12) of the bearing housing (3) two ends of the bearing hole
Place is additionally provided with outside framework oil seal,
It is respectively arranged with the first seal groove (13) and the second seal groove (14) on the two sides of the pump cover (2), described first
Seal groove (13) is located at the large end face of pump cover (2), and the second seal groove (14) is then located at the small end face of pump cover (2), and institute
It states and is provided with rubber o-ring in the first seal groove (13) and the second seal groove (14), while first seal groove (13)
There is the common center of circle with the second seal groove (14),
Also mutually it are furnished with sealing gland (15) with the pump cover (2), and the sealing gland (15) is located at pump cover (2) towards bearing
One end of case (3), the sealing gland (15) include gland body (16), and the tail portion of gland body (16) is welded with end plate (17), pressure
The collet chamber of cooling water is collectively formed in lid (16) and end plate (17), also sets up that there are three interfaces on the circumference of gland body (16)
(18), these three interfaces (18) are respectively flushing interface, cooling water inlet and cooling water outlet, and the interface (18) and cooling
The collet chamber of water is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821598985.2U CN208845370U (en) | 2018-09-29 | 2018-09-29 | A kind of centrifugal pump with water-cooled pump cover and sealing gland |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821598985.2U CN208845370U (en) | 2018-09-29 | 2018-09-29 | A kind of centrifugal pump with water-cooled pump cover and sealing gland |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208845370U true CN208845370U (en) | 2019-05-10 |
Family
ID=66374796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821598985.2U Expired - Fee Related CN208845370U (en) | 2018-09-29 | 2018-09-29 | A kind of centrifugal pump with water-cooled pump cover and sealing gland |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208845370U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113446320A (en) * | 2020-03-24 | 2021-09-28 | 湖州博洛尼科技有限公司 | Water-cooling sealed bearing box |
-
2018
- 2018-09-29 CN CN201821598985.2U patent/CN208845370U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113446320A (en) * | 2020-03-24 | 2021-09-28 | 湖州博洛尼科技有限公司 | Water-cooling sealed bearing box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 218, Zhuoyue street, sanjianbao street, Lushunkou District, Dalian City, Liaoning Province, 116041 Patentee after: Dalian Shuanglong Pump Group Co.,Ltd. Address before: No. 218, Zhuoyue street, sanjianbao street, Lushunkou District, Dalian City, Liaoning Province, 116041 Patentee before: DALIAN SONGLONG PUMP MADING Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190510 Termination date: 20210929 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |