CN207989741U - A kind of back pressure type machine seal apparatus - Google Patents
A kind of back pressure type machine seal apparatus Download PDFInfo
- Publication number
- CN207989741U CN207989741U CN201820339235.7U CN201820339235U CN207989741U CN 207989741 U CN207989741 U CN 207989741U CN 201820339235 U CN201820339235 U CN 201820339235U CN 207989741 U CN207989741 U CN 207989741U
- Authority
- CN
- China
- Prior art keywords
- seal
- sealing cover
- end plate
- big envelope
- ring
- 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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- Mechanical Sealing (AREA)
- Sealing Devices (AREA)
Abstract
The utility model belongs to mechanically-sealing apparatus, and in particular to a kind of back pressure type machine seal apparatus；Machine big envelope covers on the rotating shaft, it is provided with positioning convex platform on the outside of machine big envelope, rotary packing ring is sleeved on machine big envelope and is connected on the positioning convex platform on machine big envelope, and stationary seal ring is sleeved on the outside of machine big envelope and connects with rotary packing ring side, and seal end plate is socketed on stationary seal ring；Sealing cover is actively socketed on seal end plate, and one end of sealing cover is connect by positioning pin with seal end plate；Spring is provided between sealing cover centre position and seal end plate centre position, one end of spring is connect with seal box, and the other end of spring is connect with seal end plate, and sealed letter body is socketed on sealing cover；Simple in structure, multi-layer sealed body reduces the leakage of oil gas, the abrasion for reducing equipment, extends service life so that sealing surface is not dry grinded.
Description
Technical field：
The utility model belongs to mechanically-sealing apparatus, and in particular to a kind of back pressure type machine seal apparatus.
Background technology：
Machine seals, full name mechanical seal, and in industry common people's custom is known as machine envelope.It is it is a kind of be used for solving rotary shaft with
The device sealed between body.By it is at least a pair of perpendicular to the end face of rotation axis Fluid pressure and compensation mechanism elastic force (or
Magnetic force) effect and auxiliary seal cooperation under keep be bonded and constituted with respect to sliding prevent fluid leak device, commonly use
In rotary type fluid machines such as pump, compressor, reaction stirred tanks, it is also used for gear-box, valve, rotary joint, marine rear shaft etc.
Sealing.Therefore, mechanical seal is a kind of general gland seal device.
It is fixedly mounted on gland currently, well known mechanical seal is mostly used stationary ring, rotating ring rotates on axis to be sealed.This
Kind mechanical seal works well in general operating mode, but anti-dressing easily causes sealing leak.
Utility model content：
The shortcomings that in order to overcome in the prior art, the utility model provides a kind of back pressure type machine seal apparatus, simple in structure,
Reduction liquid leakage counter can be filled, the novel back pressure type mechanically-sealing apparatus of the service life of equipment is improved.
A kind of back pressure type machine seal apparatus includes sealed letter body, sealing cover, seal end plate, stationary seal ring, rotary packing ring, machine envelope
Set, spring, rotation axis and positioning pin；The machine big envelope suit on the rotating shaft, is provided with positioning convex platform, institute on the outside of machine big envelope
The rotary packing ring stated is sleeved on machine big envelope and is connected on the positioning convex platform on machine big envelope, and the stationary seal ring is sleeved on machine big envelope
Outside simultaneously connects with rotary packing ring side, and the seal end plate is socketed on stationary seal ring；Sealing cover is actively socketed on stationary ring
On gland, one end of sealing cover is connect by positioning pin with seal end plate；In the sealing cover centre position and seal end plate
Between be provided with spring between position, one end of spring is connect with sealing cover, and the other end of spring is connect with seal end plate, described
Sealed letter body is socketed on sealing cover.
Preferably, one end of sealed letter body is connect by bolt with sealing cover.
Preferably, it is sealed using the first O-ring seal between rotary packing ring and machine big envelope.
Preferably, it is sealed by the second O-ring seal between seal end plate and stationary seal ring.
Preferably, it is respectively set between the sealing cover centre position and seal end plate centre position of rotation axis the upper side and lower side
There are one springs.
The utility model is simple in structure, and seal box is fixed by bolts on sealed letter body, and seal end plate is installed with positioning pin
It is set with organic big envelope onto sealing cover, in rotation axis, rotary packing ring is fitted on machine big envelope and is coordinated with stationary seal ring, spring installation
Between sealing cover and seal end plate, sealing cover is sealed with seal end plate with O-ring, and all parts are easy for installation, more
Layer seal reduces the leakage of oil gas, the abrasion for reducing equipment, extends service life so that sealing surface is not done
Mill.
Description of the drawings：
Fig. 1 is a kind of structural schematic diagram of back pressure type machine seal apparatus.
In figure, rotation axis 1, machine big envelope 2, rotary packing ring 3, stationary seal ring 4, seal end plate 5, sealing cover 6, sealed letter body 7,
Bolt 8, positioning pin 9, the first O-ring seal 10, the second O-ring seal 11, spring 12, positioning convex platform 13.
Specific embodiment：
As shown in Figure 1, a kind of back pressure type machine seal apparatus includes sealed letter body 7, sealing cover 6, seal end plate 5, stationary seal ring
4, rotary packing ring 3, machine big envelope 2, spring 12, rotation axis 1 and positioning pin 9.
Machine big envelope 2 is sleeved in rotation axis 1, and 2 outside of machine big envelope is provided with positioning convex platform 13,3 sets of the rotary packing ring
On machine big envelope 2 and on the positioning convex platform 13 that is connected on machine big envelope 2, the stationary seal ring 4 be sleeved on 2 outside of machine big envelope and with
3 side of rotary packing ring connects, and seal end plate 5 is socketed on stationary seal ring 4；Sealing cover 6 is actively socketed on seal end plate 5, close
One end of capping 6 is connect by positioning pin 9 with seal end plate 5；5 interposition of 6 centre position of sealing cover and seal end plate
Spring 12 is provided between setting, one end of spring 12 is connect with sealing cover 6, and the other end of spring 12 is connect with seal end plate 5, institute
The sealed letter body 7 stated is socketed on sealing cover 6, and one end of sealed letter body 7 is connect by bolt 8 with sealing cover 6.In rotation axis 1
Spring 12 there are one being respectively set between side and 5 centre position of 6 centre position of sealing cover and seal end plate of downside.
Sealed using the first O-ring seal 10 between rotary packing ring 3 and machine big envelope 2, seal end plate 5 and stationary seal ring 4 it
Between pass through the second O-ring seal 11 seal.
Claims (5)
1. a kind of back pressure type machine seal apparatus, it is characterised in that：A kind of back pressure type machine seal apparatus includes sealed letter body, sealing cover, quiet
Ring gland, stationary seal ring, rotary packing ring, machine big envelope, spring, rotation axis and positioning pin；The machine big envelope is sleeved on rotation axis
On, it is provided with positioning convex platform, the positioning that the rotary packing ring is sleeved on machine big envelope and is connected on machine big envelope on the outside of machine big envelope
On boss, the stationary seal ring is sleeved on the outside of machine big envelope and connects with rotary packing ring side, and the seal end plate is socketed in
On stationary seal ring；Sealing cover is actively socketed on seal end plate, and one end of sealing cover is connect by positioning pin with seal end plate；Institute
Spring is provided between the sealing cover centre position stated and seal end plate centre position, one end of spring is connect with sealing cover, bullet
The other end of spring is connect with seal end plate, and the sealed letter body is socketed on sealing cover.
2. a kind of back pressure type machine seal apparatus according to claim 1, it is characterised in that：One end of the sealed letter body is logical
Bolt is crossed to connect with sealing cover.
3. a kind of back pressure type machine seal apparatus according to claim 1, it is characterised in that：The rotary packing ring and machine big envelope
Between using the first O-ring seal seal.
4. a kind of back pressure type machine seal apparatus according to claim 1, it is characterised in that：The seal end plate and static seal
It is sealed by the second O-ring seal between ring.
5. a kind of back pressure type machine seal apparatus according to claim 1, it is characterised in that：Described rotation axis the upper side and lower side
Sealing cover centre position and seal end plate centre position between be respectively set there are one spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820339235.7U CN207989741U (en) | 2018-03-13 | 2018-03-13 | A kind of back pressure type machine seal apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820339235.7U CN207989741U (en) | 2018-03-13 | 2018-03-13 | A kind of back pressure type machine seal apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207989741U true CN207989741U (en) | 2018-10-19 |
Family
ID=63827782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820339235.7U Expired - Fee Related CN207989741U (en) | 2018-03-13 | 2018-03-13 | A kind of back pressure type machine seal apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207989741U (en) |
-
2018
- 2018-03-13 CN CN201820339235.7U patent/CN207989741U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181019 Termination date: 20190313 |