CN2185347Y - Automatic forward and backward compensation packing sealing assembly - Google Patents
Automatic forward and backward compensation packing sealing assembly Download PDFInfo
- Publication number
- CN2185347Y CN2185347Y CN 94208002 CN94208002U CN2185347Y CN 2185347 Y CN2185347 Y CN 2185347Y CN 94208002 CN94208002 CN 94208002 CN 94208002 U CN94208002 U CN 94208002U CN 2185347 Y CN2185347 Y CN 2185347Y
- Authority
- CN
- China
- Prior art keywords
- stuffing
- gland
- sealing
- packing
- stuffing box
- 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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- Sealing Devices (AREA)
Abstract
The utility model relates to an axial stuffing movably sliding device. The middle part of the lower end of the sealing stuffing is provided with a group of dished spring components which is used for automatically compensating the pressure. The sealing stuffing between the dished spring components and a press cover is fixed by using a fixed element and connected with the press cover into the integration. In such a way, the upper part and the lower part of the stuffing are all pressed and the pressure is uniform, so the sealing effect is good and the assembly and the disassembly are easy. Owing to the action of the elastic force of the dished spring, the device can compensate and automatic regulate the changes of the pressing force of the whole sealing length of the stuffing without the repeat press and the many maintenance. The utility model can be widely used for the mechanism devices of a water pump, an oil pump, a valve, a stirring kettle, etc.
Description
The utility model relates to a kind of axial sealer of machinery, particularly is installed in contact-type dynamic seal apparatus on pump shaft, the valve rod with the elastic plastic body filler.
At present, the packing seal structure of pump shaft and valve rod all is by gland usually or compresses axle sleeve filler is pressed on the axle, cause sealed space and inside and outside isolated, make working medium can not or small leaks to outside and reach sealing purpose, simultaneously can also be at any time regulating filler by the nut that turns the hold-down bolt that gland or compression axis put is sealing force to the impacting force of axle.But there are two disadvantages in this device: at first, owing to be soft packing, the propagation of pressure that puts on the gland is inhomogeneous, the power that gland acts on the filler will weaken with the distance increase between packing ring and the gland, near position that circle soft packing impacting force gland often will be transshipped, and the impacting force overload will strengthen the friction between filler and the axle, the concentrated wear of axle is accelerated, caused that axial plane leaks; Impacting force is very few, and filler does not just have seal action or poor sealing performance.Secondly, when loading and unloading, need filler one circle circle, insert in the Stuffing box or take out in Stuffing box, troublesome poeration is wasted time and energy.
The purpose of the utility model is to provide the packing seal composite set that a kind of sealing force is even, the life-span long, easy to loading and unloading, forward and reverse pressure compensates automatically.
Forward and reverse automatic compensation packing seal composite set is made up of at the gland of stuffing box packing end the stuffing box packing and the roof pressure that are enclosed within on the axle.The elastic pressure compensation mechanism is housed in the middle of the stuffing box packing bottom.The pressure compensation mechanism is connected with fixed block with stuffing box packing between the gland and is connected as a single entity with gland.
Below in conjunction with embodiment shown in the drawings the utility model is described in further detail.
Fig. 1 is installed in structural representation on the pump shaft for the utility model, among the figure: 1. pump shaft, 2. housing, 3. axle sleeve, 4. base ring, 5. packing ring, 6. the dish spring 7. becomes the collar, 8. filler, 9. gland, 10. nut, 11. screw rods.
Forward and reverse automatic compensation packing seal composite set comprises the stuffing box packing 8 that is enclosed within on the axle sleeve 3, and roof pressure is at the gland 9 of stuffing box packing 8 ends; Axle sleeve 3 is fixed on the pump shaft 1 and with pump shaft 1 and rotates, stuffing box packing 8 is made of packing ring, its integral sealing length is decided according to the actual requirements, being generally the 4-8 circle is advisable, the base ring 4 of the effect of compressing has been equipped with in filler 8 bottoms, near on the filler 8 of base ring 46 of one group of dish springs are housed, the dished spring assembly two ends are respectively equipped with packing ring 5 and become the collar 7, packing ring 8 on becoming the collar 7 and becoming the collar 7, gland 9 has the combination fixed hole of two or four symmetries, uses the screw rod 11 of the bottom band taper type that matches with fixed hole and nut 10 to fuse with packing ring 8 combinations and with gland 9; Gland 9 is fixed on the housing 2.Play the dish spring 6 of the automatic compensating action of pressure among the figure, also can replace, as spring etc. with other elastic compensating ring.
The utility model oppositely is subjected to force mechanisms owing to having increased in stuffing box packing, promptly make gland 9 and become the collar 7 oppositely to compress filler 8 by the nut on the adjusting screw rod 11 10, make filler pressurized about in the of 8, pressure is even, thereby good sealing effect, when installing and opening and inspecting, whole black box can integral body be laid or take out.On the other hand, this device is after being fixed, because the elastic force effect of dish spring 6, so can regulate the variation of filler impacting force on the whole seal length of compensation automatically, thereby need not to compress repeatedly, repeatedly safeguard.
Obviously, it is even to the utlity model has pressure regulation, good sealing effect, and the advantage such as easy to loading and unloading can be widely used on the plant equipment such as water pump, oil pump, valve and stirring still.
Claims (2)
1, a kind of forward and reverse automatic compensation packing seal composite set, it comprises the stuffing box packing (8) that is enclosed within on the axle (1), roof pressure is at the gland (9) of stuffing box packing (8) end, it is characterized in that: the elastic pressure compensation mechanism is housed in the middle of the stuffing box packing (8), and the pressure compensation mechanism is connected with fixed block with stuffing box packing (8) between the gland (9) and is connected as a single entity with gland (9).
2, automatic compensation packing seal composite set according to claim 1 is characterized in that described elastic pressure compensation mechanism is made of dish spring (6) assembly or helical spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94208002 CN2185347Y (en) | 1994-04-05 | 1994-04-05 | Automatic forward and backward compensation packing sealing assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94208002 CN2185347Y (en) | 1994-04-05 | 1994-04-05 | Automatic forward and backward compensation packing sealing assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2185347Y true CN2185347Y (en) | 1994-12-14 |
Family
ID=33826149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94208002 Expired - Fee Related CN2185347Y (en) | 1994-04-05 | 1994-04-05 | Automatic forward and backward compensation packing sealing assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2185347Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644301A (en) * | 2013-12-07 | 2014-03-19 | 浙江长城减速机有限公司 | Packing plane sealing device |
| CN105090509A (en) * | 2015-07-23 | 2015-11-25 | 张兆贵 | Shaft seal |
| CN106246919A (en) * | 2016-10-09 | 2016-12-21 | 中国核动力研究设计院 | One prevents pretightning force from relaxing and easily detachable packing seal structure |
| CN111237463A (en) * | 2020-02-18 | 2020-06-05 | 江苏丰尚智能科技有限公司 | Shaft end sealing mechanism |
-
1994
- 1994-04-05 CN CN 94208002 patent/CN2185347Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644301A (en) * | 2013-12-07 | 2014-03-19 | 浙江长城减速机有限公司 | Packing plane sealing device |
| CN103644301B (en) * | 2013-12-07 | 2016-06-08 | 浙江长城减速机有限公司 | Filler flat seal |
| CN105090509A (en) * | 2015-07-23 | 2015-11-25 | 张兆贵 | Shaft seal |
| CN106246919A (en) * | 2016-10-09 | 2016-12-21 | 中国核动力研究设计院 | One prevents pretightning force from relaxing and easily detachable packing seal structure |
| CN111237463A (en) * | 2020-02-18 | 2020-06-05 | 江苏丰尚智能科技有限公司 | Shaft end sealing mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |