CN203285721U - Padding sealing structure of axially split pump - Google Patents
Padding sealing structure of axially split pump Download PDFInfo
- Publication number
- CN203285721U CN203285721U CN2013202289604U CN201320228960U CN203285721U CN 203285721 U CN203285721 U CN 203285721U CN 2013202289604 U CN2013202289604 U CN 2013202289604U CN 201320228960 U CN201320228960 U CN 201320228960U CN 203285721 U CN203285721 U CN 203285721U
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- CN
- China
- Prior art keywords
- padding
- sealing
- shaft
- protective sleeve
- bolt
- 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 padding sealing structure of an axially split pump. The padding sealing structure of the axially split pump comprises a shaft, wherein a sealing ring and a pressing cover are installed on the shaft, a sealing cavity is formed among the sealing ring, the pressing cover and the shaft, a protective sleeve is installed in the sealing cavity of the shaft, padding is arranged between the protective sleeve and the shaft, the pressing cover and one end of the protective sleeve are respectively provided with a threaded hole, the threaded holes are communicated and provided with a bolt in a screwed mode, a bush is arranged on the shaft and installed between the inner side of the sealing ring and the other end of the protective sleeve, and an elastic pad is arranged on the bolt and installed between the bolt and the pressing cover. The padding sealing structure of the axially split pump is reasonable in structure, stress exerted on the protective sleeve is even, accordingly, abrasion to the protective sleeve is reduced, force produced when the padding deforms is balanced with the force produced by the elastic pad, the sealing effect is greatly enhanced, force to the shaft by the padding can change along with the pressure changes of sealing media through the elastic pad, the elasticity demand of the padding is met, and therefore the padding has good sealing performance.
Description
Technical field
The utility model relates to the sealing configuration field of middle-opening pump, specifically a kind of middle-opening pump packing seal structure.
Background technique
Most of middle-opening pumps under the not high operating mode of General Requirements, can adopt this seal form of packing seal usually in order to save cost.Packing seal is to stop a kind of seal form of leaking with filler filling leakage, is characterized in simple in structure, and is with low cost.Packing seal on middle-opening pump is static seal and motive sealing, and filler used is the soft packing of oil immersion asbestos packing, but maximum shortcoming is that sealability is poor, and too large to the sheath wearing and tearing, and wasted power is also very large.
Middle-opening pump uses the conventional filler sealing also to have following shortcoming:
1, pretightening force is constant, and the constant namely sealing force of pretightening force is constant, and the pressure of sealed medium is the fluctuation variation, and this just there will be the not enough phenomenon of sealing.
2, sheath serious wear, general size of normally observing leakage rate when reconciling at the scene the sealing impacting force,, if will tighten bolt on gland after little, make filler fully contact with axle or sheath, can make like this filler reduction in working life that heats up.
The model utility content
The purpose of this utility model is to provide a kind of middle-opening pump packing seal structure, overcomes the deficiency of conventional filler sealing on structure and performance, makes the gland sealed structure more reasonable, and sealing effect is better, and sealability is significantly improved.
The technical solution of the utility model is as follows:
A kind of middle-opening pump packing seal structure, include axle, be separately installed with seal ring and gland on described axle, form Seal cage between described seal ring, gland and axle, sheath is installed on described axle in Seal cage, be provided with filler between described sheath and axle, be respectively equipped with the screw that connects and be screwed with bolt with an end of sheath on gland, it is characterized in that: between the other end of the inboard of seal ring and sheath, lining is installed on described axle, the bullet pad is installed on described bolt between bolt and gland.
Described middle-opening pump packing seal structure is characterized in that: described seal ring is an end sealing, the ring body that the other end is uncovered.
The beneficial effects of the utility model:
The utility model is rational in infrastructure, the sheath pressurized is even, thereby the wearing and tearing of sheath have been reduced, the power that the power that filler produces because of distortion and bullet pad produce balances each other, greatly strengthened sealing effect, bullet is paid somebody's debt and expected repayment later and can be realized that filler can make the elasticity of filler be met with the change in pressure of sealing medium to the power of axle, thereby makes filler have good sealability.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Referring to Fig. 1, a kind of middle-opening pump packing seal structure, include axle 1, be separately installed with seal ring 2 and gland 5 on axle 1, form Seal cage 9 between seal ring 2, gland 5 and axle 1, sheath 3 is installed on axle 1 in Seal cage 9, be provided with filler 4 between sheath 3 and axle 1, be respectively equipped with the screw that connects and be screwed with bolt 6 with an end of sheath 3 on gland 5, between the other end of the inboard of seal ring 2 and sheath 3, lining 8 is installed on axle 1, between bolt 6 and gland 5, bullet pad 7 is installed on bolt 6.
In the utility model, seal ring 2 is an end sealing, the ring body that the other end is uncovered.
Claims (2)
1. middle-opening pump packing seal structure, include axle, be separately installed with seal ring and gland on described axle, form Seal cage between described seal ring, gland and axle, sheath is installed on described axle in Seal cage, be provided with filler between described sheath and axle, be respectively equipped with the screw that connects and be screwed with bolt with an end of sheath on gland, it is characterized in that: between the other end of the inboard of seal ring and sheath, lining is installed on described axle, the bullet pad is installed on described bolt between bolt and gland.
2. middle-opening pump packing seal structure according to claim 1 is characterized in that: described seal ring is an end sealing, the ring body that the other end is uncovered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202289604U CN203285721U (en) | 2013-04-28 | 2013-04-28 | Padding sealing structure of axially split pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202289604U CN203285721U (en) | 2013-04-28 | 2013-04-28 | Padding sealing structure of axially split pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203285721U true CN203285721U (en) | 2013-11-13 |
Family
ID=49542087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202289604U Expired - Fee Related CN203285721U (en) | 2013-04-28 | 2013-04-28 | Padding sealing structure of axially split pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203285721U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110735798A (en) * | 2019-12-03 | 2020-01-31 | 新沂市利源机械有限公司 | sealed leakproof horizontal centrifugal sand pump |
-
2013
- 2013-04-28 CN CN2013202289604U patent/CN203285721U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110735798A (en) * | 2019-12-03 | 2020-01-31 | 新沂市利源机械有限公司 | sealed leakproof horizontal centrifugal sand pump |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131113 Termination date: 20140428 |