CN209622046U - A kind of Bidirectional compacting stuffing sealing device - Google Patents
A kind of Bidirectional compacting stuffing sealing device Download PDFInfo
- Publication number
- CN209622046U CN209622046U CN201920118083.2U CN201920118083U CN209622046U CN 209622046 U CN209622046 U CN 209622046U CN 201920118083 U CN201920118083 U CN 201920118083U CN 209622046 U CN209622046 U CN 209622046U
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- inner ring
- filler group
- ring sleeve
- gland
- main shaft
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Abstract
The utility model discloses a kind of Bidirectional compacting stuffing sealing devices, belong to slewing technical field of sealing technology, including main shaft, main shaft one end is coaxially installed with gland, the other end is coaxially installed with stuffing box, inner ring sleeve is coaxially installed between gland and stuffing box, inner ring sleeve and main shaft, which are formed by closed cavity, is equipped with filler group.The utility model can uniformly adjust the interior outside stress of filler group by adjusting separately interior clamp nut and external compression nut, so that the rigidity of filler group and plasticity keep preferable state, to realize the excellent sealing at place of being association of activity and inertia；By Bidirectional compacting, under same sealing effect, pressing force required for filler group becomes smaller, to reduce the inessential abrasion of filler group, extends the service life of the device, also substantially extends the replacement cycle of filler group, saves maintenance cost；By the way that the new leak source caused by moving radially because of inner ring sleeve can be prevented in the increased rubber seal of inner ring sleeve lateral sulcus slot, so that sealing is more reliable.
Description
Technical field
The utility model relates to slewing technical field of sealing technology, specifically a kind of Bidirectional compacting stuffing sealing device.
Background technique
Packing seal be it is a kind of be association of activity and inertia the sealing structure at position for slewing, can be widely used for rotary joint,
The plunger of blender, the rotating shaft sealing of reaction kettle and reciprocating pump, reciprocating compressor, and do straight line, screw valve
Sealing between valve rod and fixed body.Simple with structure, manufacturing cost is low, advantage easy to maintain.
Existing conventional structure is usually to make through gland screw to it axial after several packing rings are sequentially loaded into packing cavity
Compression, due to the plasticity of filler, makes it generate radial force, and be in close contact with axis when axis has relative motion with filler.With this
Meanwhile the lubricant impregnated in filler is extruded, and oil film is formed between contact surface.In other words, to keep it is good lubrication and
Compression appropriate.If insufficient lubrication, or press tension can all be such that oil film interrupts, cause occur dry friction between filler and axis, most
Lead to the scaling loss of axis afterwards or is seriously worn.For this reason, it may be necessary to be often adjusted to the compression degree of filler, so as to the profit in filler
Lubrication prescription is lost in operation a period of time and then squeezes out some lubricants, while compensating filler because of the pressure caused by volume change
Clamp force relaxation.Obviously, most important for the compression of filler during this, but it is limited to current conventional structure, filler is only capable of
It is compressed from one end, but since filler itself is there are certain rigidity, the pressing force of one end is difficult to be evenly transferred to subsequent per filling out together
Expect ring, therefore be easy to cause the abrasion of filler in packing cavity inconsistent, eventually leads to packing seal premature failure.
Utility model content
The purpose of this utility model is to provide a kind of Bidirectional compacting stuffing sealing device, its advantage is that features simple structure, it can
Improve the operating condition of packing ring, sealing effect is good, long service life, to solve the problems mentioned in the above background technology.
To achieve the above object, the utility model provides the following technical solutions:
A kind of Bidirectional compacting stuffing sealing device, including main shaft, described main shaft one end are coaxially installed with gland, and the other end is same
Axis is equipped with stuffing box, and inner ring sleeve is coaxially installed between the gland and stuffing box, and inner ring sleeve and main shaft are formed by closing
Filler group is installed in cavity.
As a further solution of the present invention: the gland and stuffing box by the outer fastening bolt of circumference and
The connection of external compression nut.
As a further solution of the present invention: the inner ring sleeve and stuffing box pass through the interior fastening bolt of circumference
And interior clamp nut connection.
As a further solution of the present invention: the gland is equipped with boss, boss size is less than the outer of filler group
Overall size.
The inner ring sleeve outer ring is equipped with groove as a further solution of the present invention, is equipped with rubber in groove
Sealing ring.
Compared with prior art, the utility model has the beneficial effects that
A kind of Bidirectional compacting stuffing sealing device, it is structurally reasonable, it is novel in design, by adjusting separately interior clamp nut
And external compression nut, the interior outside stress of filler group can be uniformly adjusted, so that the rigidity of filler group and plasticity keep preferable shape
State, to realize the excellent sealing at place of being association of activity and inertia；By Bidirectional compacting, under same sealing effect, required for filler group
Pressing force becomes smaller, to reduce the inessential abrasion of filler group, extends the service life of the device, also substantially extends and fill out
The replacement cycle of material group saves maintenance cost；By that can prevent because of inner ring in the increased rubber seal of inner ring sleeve lateral sulcus slot
Set moves radially caused new leak source, so that sealing is more reliable.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of Bidirectional compacting stuffing sealing device.
In figure: 1- main shaft, 2- external compression nut, 3- outer fastening bolt, 4- gland, 5- stuffing box, 6- inner ring sleeve, 7- filler
Clamp nut in group, 8-, hold-down bolt, 10- rubber seal in 9-.
Specific embodiment
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For limitations of the present invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating
Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result,
Feature can explicitly or implicitly include one or more of the features.It is in the description of the present invention, unless another
It is described, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State the concrete meaning of term in the present invention.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
Embodiment 1
Refering to fig. 1, in the utility model embodiment, a kind of Bidirectional compacting stuffing sealing device, including main shaft 1, the master
1 one end of axis is coaxially installed with gland 4, and the other end is coaxially installed with stuffing box 5, and the gland 4 passes through circumference with stuffing box 5
Outer fastening bolt 3 and external compression nut 2 connect, external compression nut 2 can provide pressing force and be transmitted to gland 4 and then realize to filling out
The adjustment of 7 compaction degree of material group is coaxially installed with inner ring sleeve 6, the inner ring sleeve 6 and stuffing box between the gland 4 and stuffing box 5
5 are connected by the interior fastening bolt 9 and interior clamp nut 8 of circumference, the length of the adjustable interior fastening bolt 9 of interior clamp nut 8
For degree to realize the axial movement of inner ring sleeve 6, the gland 4 is equipped with boss, and boss size is less than the outer profile ruler of filler group 7
Very little, inner ring sleeve 6 and main shaft 1 are formed by closed cavity and are equipped with filler group 7.
Embodiment 2
In another embodiment of the utility model, it is in place of the difference of the embodiment and above-described embodiment, it is described
6 outer ring of inner ring sleeve is equipped with groove, is equipped with rubber seal 10 in groove, the rubber seal 10 can to stuffing box 5 with it is interior
Static seal gap between ring set 6 is sealed, and prevents leak or oil leak.
The working principle of the utility model is: under nominal situation, filler group 7 can provide pair by the rigidity and plasticity of itself
The leakage in gap here is prevented in the sealing in gap between 5 axis hole of main shaft 1 and stuffing box；When running after a certain period of time, filler itself can
There is abrasion that its rigidity and plasticity is caused to reduce, and the gap between main shaft 1 becomes larger, sealing effect reduces, and needs to adjust at this time
Its compaction degree so that restore the sealing function that should have, by screw external compression nut 2 make gland boss to filler group 7 into
Row compresses, but since filler group 7 is made of a plurality of packing ring, the pressing force of gland 4 can not be evenly transferred to each packing ring,
Outside packing ring stress is big compared with inside packing ring at this time.Can continue to adjust interior clamp nut 8 at this time, make inner ring sleeve 6 along main shaft 1 to
Direction is moved outward, so that a reversed pressing force is provided for filler group 7, so that filler group 7 obtains in the axial direction
Bidirectional compacting so that interior outside packing ring can uniform stressed, thus make filler group 7 restore good plasticity and just
Property, keep the sealing state with main shaft 1.Meanwhile the static seal gap between inner ring sleeve 6 and stuffing box 5 is by the rubber seal
Circle 10 is sealed, and prevents tiny leaks herein.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (5)
1. a kind of Bidirectional compacting stuffing sealing device, including main shaft (1), described main shaft (1) one end is coaxially installed with gland (4),
The other end is coaxially installed with stuffing box (5), which is characterized in that is coaxially installed with inner ring between the gland (4) and stuffing box (5)
It covers (6), inner ring sleeve (6) and main shaft (1) are formed by closed cavity and are equipped with filler group (7).
2. a kind of Bidirectional compacting stuffing sealing device according to claim 1, which is characterized in that the gland (4) with fill out
Outer fastening bolt (3) and external compression nut (2) connection that hopper (5) passes through circumference.
3. a kind of Bidirectional compacting stuffing sealing device according to claim 1 or 2, which is characterized in that the inner ring sleeve (6)
It is connect with stuffing box (5) by the interior fastening bolt (9) and interior clamp nut (8) of circumference.
4. a kind of Bidirectional compacting stuffing sealing device according to claim 2, which is characterized in that set on the gland (4)
There is boss, boss size is less than the outer profile size of filler group (7).
5. a kind of Bidirectional compacting stuffing sealing device according to claim 3, which is characterized in that the inner ring sleeve (6) is outside
Circle is equipped with groove, is equipped with rubber seal (10) in groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920118083.2U CN209622046U (en) | 2019-01-24 | 2019-01-24 | A kind of Bidirectional compacting stuffing sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920118083.2U CN209622046U (en) | 2019-01-24 | 2019-01-24 | A kind of Bidirectional compacting stuffing sealing device |
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| Publication Number | Publication Date |
|---|---|
| CN209622046U true CN209622046U (en) | 2019-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920118083.2U Active CN209622046U (en) | 2019-01-24 | 2019-01-24 | A kind of Bidirectional compacting stuffing sealing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113200768A (en) * | 2021-05-13 | 2021-08-03 | 广东省绿革环保科技有限公司 | Kitchen waste treatment system |
| CN114017414A (en) * | 2021-11-01 | 2022-02-08 | 武汉力地液压设备有限公司 | Self-adaptive sealing device of hydraulic cylinder and self-adaptive adjusting method |
| CN114871455A (en) * | 2022-03-31 | 2022-08-09 | 南通市力沛流体阀业有限公司 | Valve filler instrument and removing method thereof |
-
2019
- 2019-01-24 CN CN201920118083.2U patent/CN209622046U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113200768A (en) * | 2021-05-13 | 2021-08-03 | 广东省绿革环保科技有限公司 | Kitchen waste treatment system |
| CN114017414A (en) * | 2021-11-01 | 2022-02-08 | 武汉力地液压设备有限公司 | Self-adaptive sealing device of hydraulic cylinder and self-adaptive adjusting method |
| CN114017414B (en) * | 2021-11-01 | 2024-05-07 | 武汉力地液压设备有限公司 | Hydraulic cylinder self-adaptive sealing device and self-adaptive adjusting method |
| CN114871455A (en) * | 2022-03-31 | 2022-08-09 | 南通市力沛流体阀业有限公司 | Valve filler instrument and removing method thereof |
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